/* roulang page: index */
:root {
            --color-primary: #E8551A;
            --color-primary-deep: #D4480F;
            --color-primary-hover: #B8450D;
            --color-primary-light: rgba(232, 85, 26, 0.10);
            --color-primary-subtle: rgba(232, 85, 26, 0.06);
            --color-dark: #1E1E1E;
            --color-dark-bg: #1A1A1A;
            --color-bg: #FFFFFF;
            --color-bg-alt: #FAFAFA;
            --color-bg-gray: #F5F5F5;
            --color-border: #E8E8E8;
            --color-border-light: #ECECEC;
            --color-divider: #E0E0E0;
            --color-text: #1E1E1E;
            --color-text-secondary: #555555;
            --color-text-muted: #888888;
            --color-text-light: #AAAAAA;
            --color-accent: #0F4C3A;
            --color-accent-light: #0F4C3A15;
            --color-danger: #C0392B;
            --color-white: #FFFFFF;
            --color-charcoal: #333333;
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-input: 4px;
            --radius-tag: 2px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
            --transition-slow: 0.6s ease;
            --section-pad-desktop: 100px;
            --section-pad-tablet: 70px;
            --section-pad-mobile: 50px;
            --container-max: 1200px;
            --content-width: 750px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }
        input,
        textarea,
        select {
            font-family: inherit;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container--narrow {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            height: 76px;
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }
        .header-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .header-logo:hover {
            color: var(--color-primary-deep);
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 40px;
        }
        .header-nav a {
            font-size: 16px;
            font-weight: 400;
            color: var(--color-charcoal);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .header-nav a:hover {
            color: var(--color-primary);
        }
        .header-nav a.active {
            color: var(--color-primary);
            font-weight: 500;
        }
        .header-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .header-search-icon {
            font-size: 18px;
            color: var(--color-charcoal);
            cursor: pointer;
            transition: color var(--transition-fast);
            background: none;
            border: none;
            padding: 4px;
        }
        .header-search-icon:hover {
            color: var(--color-primary);
        }
        .header-cta-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-primary);
            padding: 8px 18px;
            border: 1px solid var(--color-primary);
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .header-cta-link:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-deep);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 8px;
            z-index: 1001;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-charcoal);
            border-radius: 1px;
            transition: all var(--transition-smooth);
        }
        .hamburger span:nth-child(3) {
            width: 16px;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            width: 24px;
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: var(--color-white);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 32px;
            font-size: 22px;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-smooth);
        }
        .mobile-menu.active {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-menu a {
            color: var(--color-charcoal);
            font-weight: 500;
            font-size: 22px;
        }
        .mobile-menu a:hover {
            color: var(--color-primary);
        }
        .mobile-close {
            position: absolute;
            top: 24px;
            right: 24px;
            font-size: 28px;
            background: none;
            border: none;
            color: var(--color-charcoal);
            cursor: pointer;
        }

        /* ========== SECTION BASE ========== */
        section {
            padding: var(--section-pad-desktop) 0;
        }
        .section--dark {
            background: var(--color-dark-bg);
            color: var(--color-white);
        }
        .section--alt {
            background: var(--color-bg-alt);
        }
        .section--gray {
            background: var(--color-bg-gray);
        }
        .section--primary-light {
            background: var(--color-primary-subtle);
        }
        .section-label {
            display: inline-block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--color-dark);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 17px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            max-width: var(--content-width);
            margin-bottom: 32px;
        }
        .section--dark .section-title {
            color: var(--color-white);
        }
        .section--dark .section-desc {
            color: #CCCCCC;
        }
        .section--dark .section-label {
            color: #FF8C5A;
        }

        /* ========== BUTTONS ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 16px;
            font-weight: 500;
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }
        .btn:active {
            transform: scale(0.98);
        }
        .btn--primary {
            background: var(--color-primary);
            color: var(--color-white);
            border: none;
        }
        .btn--primary:hover {
            background: var(--color-primary-hover);
            color: var(--color-white);
            filter: brightness(0.9);
        }
        .btn--outline {
            background: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }
        .btn--outline:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-deep);
        }
        .btn--ghost {
            background: transparent;
            color: var(--color-primary);
            border: none;
            padding: 8px 16px;
        }
        .btn--ghost:hover {
            text-decoration: underline;
            color: var(--color-primary-hover);
        }
        .btn--lg {
            padding: 16px 36px;
            font-size: 18px;
            border-radius: 6px;
        }
        .btn--white {
            background: var(--color-white);
            color: var(--color-primary);
            border: none;
        }
        .btn--white:hover {
            background: #f0f0f0;
            color: var(--color-primary-deep);
        }

        /* ========== CARDS ========== */
        .card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: all var(--transition-smooth);
            position: relative;
        }
        .card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .card--highlight {
            border: 2px solid var(--color-primary);
            box-shadow: var(--shadow-sm);
            background: #FFFBF8;
        }
        .card--highlight::before {
            content: '推荐';
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--color-primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-tag);
            letter-spacing: 0.5px;
        }
        .card__title {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 8px;
        }
        .card__desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        .card__meta {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-top: 12px;
        }
        .card__image {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: 6px;
            margin-bottom: 16px;
            background: #EEEEEE;
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            padding: 80px 0 100px;
            background: var(--color-dark-bg);
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: rgba(26, 26, 26, 0.55);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero__inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero__content h1 {
            font-size: 46px;
            font-weight: 800;
            color: var(--color-white);
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: -1px;
        }
        .hero__content .hero__subtitle {
            font-size: 18px;
            font-weight: 300;
            color: #CCCCCC;
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 520px;
        }
        .hero__cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero__cards {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .hero-compare-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            color: #ddd;
            transition: all var(--transition-smooth);
            cursor: default;
            backdrop-filter: blur(4px);
        }
        .hero-compare-card--highlight {
            background: rgba(232, 85, 26, 0.2);
            border: 2px solid var(--color-primary);
            color: #fff;
            position: relative;
            transform: scale(1.03);
            box-shadow: 0 0 30px rgba(232, 85, 26, 0.25);
        }
        .hero-compare-card--highlight .hero-compare-badge {
            position: absolute;
            top: -10px;
            right: 16px;
            background: var(--color-primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 3px;
            letter-spacing: 0.5px;
        }
        .hero-compare-card__title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
            color: #fff;
        }
        .hero-compare-card__desc {
            font-size: 14px;
            color: #bbb;
            line-height: 1.5;
        }
        .hero-compare-card--highlight .hero-compare-card__desc {
            color: #eee;
        }

        /* ========== METRICS DASHBOARD ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--color-dark-bg);
        }
        .metric-item {
            text-align: center;
            padding: 40px 20px;
            position: relative;
            border-right: 1px solid rgba(255, 255, 255, 0.08);
        }
        .metric-item:last-child {
            border-right: none;
        }
        .metric-item__number {
            font-size: 48px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1;
            margin-bottom: 8px;
            letter-spacing: -1px;
        }
        .metric-item__label {
            font-size: 14px;
            font-weight: 400;
            color: #999;
            letter-spacing: 0.5px;
        }
        .metric-item__divider {
            width: 30px;
            height: 2px;
            background: rgba(255, 255, 255, 0.15);
            margin: 10px auto 0;
        }

        /* ========== SERVICE MATRIX ========== */
        .service-matrix {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 24px;
        }
        .service-card-large {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 36px;
            position: relative;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .service-card-large:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .service-card-large__image {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: 6px;
            margin-bottom: 20px;
            background: #EEEEEE;
        }
        .service-card-large__title {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-dark);
            margin-bottom: 10px;
        }
        .service-card-large__desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .service-card-stack {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .service-card-small {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            flex: 1;
            transition: all var(--transition-smooth);
        }
        .service-card-small:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .service-card-small__title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 6px;
        }
        .service-card-small__desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ========== COMPARISON TABLE ========== */
        .compare-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
        }
        .compare-table th,
        .compare-table td {
            padding: 16px 20px;
            text-align: center;
            border-bottom: 1px solid var(--color-border-light);
        }
        .compare-table th {
            background: var(--color-bg-alt);
            font-weight: 600;
            font-size: 15px;
            color: var(--color-dark);
            position: sticky;
            top: 0;
        }
        .compare-table th:first-child {
            text-align: left;
            width: 28%;
        }
        .compare-table td {
            font-size: 14px;
            color: var(--color-text-secondary);
        }
        .compare-table td:first-child {
            text-align: left;
            font-weight: 500;
            color: var(--color-dark);
        }
        .compare-table .col-highlight {
            background: #FFFBF8;
            position: relative;
        }
        .compare-table .col-highlight th {
            color: var(--color-primary);
            background: #FFF6F0;
        }
        .compare-check {
            color: var(--color-accent);
            font-weight: 700;
            font-size: 16px;
        }
        .compare-dash {
            color: #ccc;
        }

        /* ========== VERTICAL CARDS (竖屏种草) ========== */
        .vertical-card-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding: 8px 0 20px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }
        .vertical-card-scroll::-webkit-scrollbar {
            height: 5px;
        }
        .vertical-card-scroll::-webkit-scrollbar-track {
            background: #f0f0f0;
            border-radius: 3px;
        }
        .vertical-card-scroll::-webkit-scrollbar-thumb {
            background: #ccc;
            border-radius: 3px;
        }
        .vertical-card {
            flex: 0 0 220px;
            scroll-snap-align: start;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .vertical-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .vertical-card__image {
            width: 100%;
            aspect-ratio: 3/4;
            object-fit: cover;
            background: #EEEEEE;
        }
        .vertical-card__body {
            padding: 16px;
        }
        .vertical-card__title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .vertical-card__cta {
            font-size: 13px;
            color: var(--color-primary);
            font-weight: 500;
            margin-top: 8px;
            display: inline-block;
        }

        /* ========== STEPS (新手入门) ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            position: relative;
            padding: 32px 20px;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            transition: all var(--transition-smooth);
        }
        .step-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .step-item__number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .step-item__title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 8px;
        }
        .step-item__desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ========== TIER CARDS (优惠阶梯) ========== */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: stretch;
        }
        .tier-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition-smooth);
            position: relative;
            display: flex;
            flex-direction: column;
        }
        .tier-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .tier-card--popular {
            border: 2px solid var(--color-primary);
            background: #FFFBF8;
            transform: scale(1.04);
            z-index: 2;
            box-shadow: var(--shadow-sm);
        }
        .tier-card--popular:hover {
            transform: scale(1.04) translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .tier-badge {
            display: inline-block;
            background: var(--color-primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 3px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .tier-card__name {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-dark);
            margin-bottom: 8px;
        }
        .tier-card__price {
            font-size: 36px;
            font-weight: 800;
            color: var(--color-primary);
            margin-bottom: 16px;
        }
        .tier-card__price span {
            font-size: 14px;
            font-weight: 400;
            color: var(--color-text-muted);
        }
        .tier-card__features {
            list-style: none;
            text-align: left;
            flex: 1;
            margin-bottom: 20px;
        }
        .tier-card__features li {
            font-size: 14px;
            color: var(--color-text-secondary);
            padding: 6px 0;
            padding-left: 20px;
            position: relative;
            line-height: 1.5;
        }
        .tier-card__features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--color-accent);
            font-weight: 700;
        }

        /* ========== NEWS LIST ========== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: background var(--transition-fast);
            align-items: flex-start;
        }
        .news-item:hover {
            background: #fafafa;
            margin: 0 -12px;
            padding: 20px 12px;
            border-radius: 6px;
        }
        .news-item__date {
            font-size: 14px;
            color: var(--color-text-muted);
            white-space: nowrap;
            flex-shrink: 0;
            min-width: 90px;
            font-weight: 400;
        }
        .news-item__content {
            flex: 1;
        }
        .news-item__title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-item__summary {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item__link {
            font-size: 14px;
            color: var(--color-primary);
            font-weight: 500;
            display: inline-block;
            margin-top: 6px;
        }
        .news-item__link:hover {
            text-decoration: underline;
            color: var(--color-primary-hover);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: var(--content-width);
            margin: 0 auto;
        }
        .faq-item {
            border-top: 1px solid var(--color-border-light);
            cursor: pointer;
        }
        .faq-item:last-child {
            border-bottom: 1px solid var(--color-border-light);
        }
        .faq-item__question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0;
            font-size: 18px;
            font-weight: 500;
            color: var(--color-dark);
            gap: 16px;
            transition: color var(--transition-fast);
        }
        .faq-item__question:hover {
            color: var(--color-primary);
        }
        .faq-item__icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--color-primary);
            transition: transform var(--transition-smooth);
            font-weight: 300;
        }
        .faq-item.active .faq-item__icon {
            transform: rotate(45deg);
        }
        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            font-size: 16px;
            color: #444;
            line-height: 1.8;
            background: transparent;
            border-radius: 0;
        }
        .faq-item.active .faq-item__answer {
            max-height: 400px;
            padding: 0 0 18px;
            background: #F9F9F9;
            padding: 12px 16px 18px;
            border-radius: 6px;
            margin-bottom: 8px;
        }

        /* ========== CTA / FORM ========== */
        .cta-section {
            background: var(--color-primary-subtle);
            padding: 80px 0;
            text-align: center;
        }
        .cta-section__title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-dark);
            margin-bottom: 12px;
        }
        .cta-section__desc {
            font-size: 17px;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .form-row {
            display: flex;
            gap: 12px;
            max-width: 560px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .form-input {
            flex: 1;
            min-width: 200px;
            padding: 14px 18px;
            font-size: 16px;
            border: none;
            border-bottom: 2px solid #CCCCCC;
            background: var(--color-white);
            border-radius: var(--radius-input) var(--radius-input) 0 0;
            transition: border-color var(--transition-fast);
            font-family: inherit;
        }
        .form-input:focus {
            border-bottom-color: var(--color-primary);
            outline: none;
        }
        .form-textarea {
            width: 100%;
            max-width: 560px;
            padding: 14px 18px;
            font-size: 16px;
            border: none;
            border-bottom: 2px solid #CCCCCC;
            background: var(--color-white);
            border-radius: var(--radius-input) var(--radius-input) 0 0;
            resize: vertical;
            min-height: 80px;
            transition: border-color var(--transition-fast);
            font-family: inherit;
            margin-top: 12px;
        }
        .form-textarea:focus {
            border-bottom-color: var(--color-primary);
            outline: none;
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 36px;
            line-height: 1.8;
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: var(--container-max);
            margin: 0 auto;
        }
        .brand-intro h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-dark);
            margin-bottom: 14px;
        }
        .brand-intro p {
            margin-bottom: 12px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-dark-bg);
            color: #AAAAAA;
            padding: 48px 0 32px;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-col__title {
            font-size: 16px;
            font-weight: 600;
            color: #ddd;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: #AAAAAA;
            padding: 5px 0;
            font-size: 14px;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .footer-slogan {
            color: #888;
            font-size: 14px;
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: #888;
        }
        .footer-bottom a {
            color: #AAA;
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-bottom-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        /* ========== ANIMATIONS ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-on-scroll {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity var(--transition-slow), transform var(--transition-slow);
        }
        .animate-on-scroll.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .stagger-1 {
            transition-delay: 0.1s;
        }
        .stagger-2 {
            transition-delay: 0.2s;
        }
        .stagger-3 {
            transition-delay: 0.3s;
        }
        .stagger-4 {
            transition-delay: 0.4s;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .header-nav {
                gap: 24px;
            }
            .header-nav a {
                font-size: 14px;
            }
            .hero__inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero__content h1 {
                font-size: 36px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .metric-item {
                border-right: 1px solid rgba(255, 255, 255, 0.08);
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            }
            .metric-item:nth-child(2) {
                border-right: none;
            }
            .metric-item:nth-child(3),
            .metric-item:nth-child(4) {
                border-bottom: none;
            }
            .service-matrix {
                grid-template-columns: 1fr;
            }
            .service-card-stack {
                flex-direction: row;
                gap: 16px;
            }
            .service-card-small {
                flex: 1;
            }
            .tier-grid {
                grid-template-columns: 1fr;
                max-width: 420px;
                margin: 0 auto;
            }
            .tier-card--popular {
                transform: scale(1);
            }
            .tier-card--popular:hover {
                transform: scale(1) translateY(-3px);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            section {
                padding: var(--section-pad-tablet) 0;
            }
            .section-title {
                font-size: 26px;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
            }
            .header-actions .header-cta-link {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-menu {
                display: flex;
            }
            .hero {
                padding: 50px 0 60px;
                min-height: auto;
            }
            .hero__content h1 {
                font-size: 30px;
            }
            .hero__subtitle {
                font-size: 15px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .metric-item__number {
                font-size: 36px;
            }
            .service-card-stack {
                flex-direction: column;
            }
            .compare-table-wrap {
                font-size: 13px;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .vertical-card-scroll {
                gap: 14px;
            }
            .vertical-card {
                flex: 0 0 170px;
            }
            .news-item {
                flex-direction: column;
                gap: 6px;
            }
            .news-item__date {
                min-width: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
            .footer-bottom-links {
                justify-content: center;
            }
            section {
                padding: var(--section-pad-mobile) 0;
            }
            .section-title {
                font-size: 24px;
            }
            .btn--lg {
                padding: 14px 24px;
                font-size: 16px;
            }
            .form-row {
                flex-direction: column;
            }
            .card {
                padding: 20px;
            }
            .brand-intro {
                padding: 24px;
            }
        }

        @media (max-width: 480px) {
            .hero__content h1 {
                font-size: 26px;
            }
            .metric-item__number {
                font-size: 28px;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .tier-grid {
                max-width: 100%;
            }
            .vertical-card {
                flex: 0 0 150px;
            }
            .section-title {
                font-size: 22px;
            }
            .header-logo {
                font-size: 18px;
            }
            .site-header {
                height: 64px;
            }
            .hero-compare-card--highlight {
                transform: scale(1);
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #E8551A;
            --color-primary-deep: #D4480F;
            --color-primary-hover: #B8450D;
            --color-primary-light: rgba(232, 85, 26, 0.10);
            --color-primary-subtle: rgba(232, 85, 26, 0.06);
            --color-dark: #1E1E1E;
            --color-dark-bg: #1A1A1A;
            --color-bg: #FFFFFF;
            --color-bg-alt: #FAFAFA;
            --color-bg-gray: #F5F5F5;
            --color-border: #E8E8E8;
            --color-border-light: #ECECEC;
            --color-divider: #E0E0E0;
            --color-text: #1E1E1E;
            --color-text-secondary: #555555;
            --color-text-muted: #888888;
            --color-text-light: #AAAAAA;
            --color-accent: #0F4C3A;
            --color-accent-light: #0F4C3A15;
            --color-danger: #C0392B;
            --color-white: #FFFFFF;
            --color-charcoal: #333333;
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-input: 4px;
            --radius-tag: 2px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
            --transition-slow: 0.6s ease;
            --section-pad-desktop: 100px;
            --section-pad-tablet: 70px;
            --section-pad-mobile: 50px;
            --container-max: 1200px;
            --content-width: 750px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        a {
            text-decoration: none;
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }
        input,
        textarea,
        select {
            font-family: inherit;
            outline: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container--narrow {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            height: 76px;
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }
        .header-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .header-logo:hover {
            color: var(--color-primary-deep);
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 40px;
        }
        .header-nav a {
            font-size: 16px;
            font-weight: 400;
            color: var(--color-charcoal);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .header-nav a:hover {
            color: var(--color-primary);
        }
        .header-nav a.active {
            color: var(--color-primary);
            font-weight: 500;
        }
        .header-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .header-search-icon {
            font-size: 18px;
            color: var(--color-charcoal);
            cursor: pointer;
            transition: color var(--transition-fast);
            background: none;
            border: none;
            padding: 4px;
        }
        .header-search-icon:hover {
            color: var(--color-primary);
        }
        .header-cta-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-primary);
            padding: 8px 18px;
            border: 1px solid var(--color-primary);
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .header-cta-link:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-deep);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
            flex-direction: column;
            gap: 5px;
            z-index: 1001;
        }
        .mobile-menu-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-charcoal);
            border-radius: 1px;
        }
        .mobile-menu-btn span:nth-child(3) {
            width: 16px;
        }
        @media (max-width: 1024px) {
            .header-nav {
                gap: 20px;
            }
            .header-nav a {
                font-size: 14px;
            }
        }
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: flex;
            }
            .header-nav {
                position: fixed;
                top: 0;
                right: -100%;
                width: 100%;
                height: 100vh;
                background: var(--color-white);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 28px;
                transition: right var(--transition-smooth);
                z-index: 1000;
            }
            .header-nav.open {
                right: 0;
            }
            .header-nav a {
                font-size: 20px;
                font-weight: 500;
            }
            .header-cta-link {
                font-size: 14px;
                padding: 6px 14px;
            }
            .header-actions {
                gap: 10px;
            }
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb {
            padding: 16px 0;
            font-size: 14px;
            color: var(--color-text-muted);
            background: var(--color-bg-alt);
            border-bottom: 1px solid var(--color-border-light);
        }
        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb span {
            color: var(--color-text);
            font-weight: 500;
        }
        .breadcrumb .separator {
            margin: 0 8px;
            color: var(--color-divider);
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            padding: 80px 0;
            background: linear-gradient(135deg, #1A1A1A 0%, #2D2018 50%, #1A1A1A 100%);
            overflow: hidden;
            text-align: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .page-banner-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .page-banner h1 {
            font-size: 42px;
            font-weight: 700;
            color: var(--color-white);
            margin: 0 0 16px;
            letter-spacing: 1px;
        }
        .page-banner .banner-subtitle {
            font-size: 18px;
            font-weight: 300;
            color: #CCCCCC;
            line-height: 1.6;
            margin: 0;
        }
        .page-banner .banner-stats {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .page-banner .banner-stat {
            text-align: center;
        }
        .page-banner .banner-stat__number {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-primary);
            display: block;
        }
        .page-banner .banner-stat__label {
            font-size: 13px;
            color: #999;
            margin-top: 4px;
            display: block;
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 50px 0;
            }
            .page-banner h1 {
                font-size: 30px;
            }
            .page-banner .banner-subtitle {
                font-size: 15px;
            }
            .page-banner .banner-stats {
                gap: 20px;
            }
            .page-banner .banner-stat__number {
                font-size: 26px;
            }
        }

        /* ========== SECTION BASE ========== */
        .section {
            padding: var(--section-pad-desktop) 0;
        }
        .section--alt {
            background: var(--color-bg-alt);
        }
        .section--dark {
            background: var(--color-dark-bg);
            color: var(--color-white);
        }
        .section__title {
            font-size: 30px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }
        .section--dark .section__title {
            color: var(--color-white);
        }
        .section__subtitle {
            font-size: 16px;
            color: var(--color-text-muted);
            margin: 0 0 40px;
            line-height: 1.6;
        }
        .section--dark .section__subtitle {
            color: #AAAAAA;
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--section-pad-tablet) 0;
            }
            .section__title {
                font-size: 24px;
            }
        }
        @media (max-width: 480px) {
            .section {
                padding: var(--section-pad-mobile) 0;
            }
            .section__title {
                font-size: 22px;
            }
        }

        /* ========== TIMELINE ========== */
        .timeline {
            position: relative;
            padding-left: 40px;
            max-width: 900px;
            margin: 0 auto;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 15px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-divider);
            border-radius: 1px;
        }
        .timeline-item {
            position: relative;
            margin-bottom: 36px;
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -29px;
            top: 6px;
            width: 10px;
            height: 10px;
            background: var(--color-primary);
            border-radius: 50%;
            border: 3px solid var(--color-white);
            box-shadow: 0 0 0 2px var(--color-primary);
            z-index: 1;
        }
        .timeline-item__date {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 6px;
            font-weight: 500;
        }
        .timeline-item__title {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .timeline-item__title a {
            color: var(--color-text);
            transition: color var(--transition-fast);
        }
        .timeline-item__title a:hover {
            color: var(--color-primary);
        }
        .timeline-item__summary {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0 0 10px;
        }
        .timeline-item__link {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition-fast);
        }
        .timeline-item__link:hover {
            color: var(--color-primary-hover);
            text-decoration: underline;
        }
        .timeline-item__link i {
            font-size: 12px;
            transition: transform var(--transition-fast);
        }
        .timeline-item__link:hover i {
            transform: translateX(3px);
        }
        @media (max-width: 768px) {
            .timeline {
                padding-left: 30px;
            }
            .timeline::before {
                left: 10px;
            }
            .timeline-item::before {
                left: -24px;
                width: 8px;
                height: 8px;
            }
            .timeline-item__title {
                font-size: 17px;
            }
            .timeline-item__summary {
                font-size: 14px;
            }
        }

        /* ========== CARDS GRID ========== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .cards-grid--2col {
            grid-template-columns: repeat(2, 1fr);
        }
        .card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-sm);
        }
        .card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .card__image {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background: #EEEEEE;
        }
        .card__body {
            padding: 24px;
        }
        .card__tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--color-primary);
            background: var(--color-primary-subtle);
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
        }
        .card__title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .card__title a {
            color: var(--color-text);
        }
        .card__title a:hover {
            color: var(--color-primary);
        }
        .card__desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin: 0 0 12px;
        }
        .card__meta {
            font-size: 12px;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .card__read-more {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-fast);
        }
        .card__read-more:hover {
            color: var(--color-primary-hover);
            text-decoration: underline;
        }
        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 600px) {
            .cards-grid,
            .cards-grid--2col {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .card__body {
                padding: 16px;
            }
            .card__title {
                font-size: 16px;
            }
        }

        /* ========== DATA TABLE ========== */
        .data-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 15px;
            min-width: 700px;
        }
        .data-table thead {
            background: var(--color-dark-bg);
            color: var(--color-white);
        }
        .data-table th {
            padding: 14px 16px;
            text-align: left;
            font-weight: 500;
            font-size: 13px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .data-table td {
            padding: 14px 16px;
            border-bottom: 1px solid var(--color-border-light);
            color: var(--color-text);
            white-space: nowrap;
        }
        .data-table tbody tr {
            transition: background var(--transition-fast);
        }
        .data-table tbody tr:hover {
            background: var(--color-bg-gray);
        }
        .data-table .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            font-weight: 700;
            font-size: 13px;
        }
        .data-table .rank-badge--top {
            background: var(--color-primary);
            color: #fff;
        }
        .data-table .rank-badge--high {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }
        .data-table .rank-badge--normal {
            background: var(--color-bg-gray);
            color: var(--color-text-muted);
        }
        .data-table .trend-up {
            color: var(--color-accent);
            font-weight: 600;
        }
        .data-table .trend-down {
            color: var(--color-danger);
            font-weight: 600;
        }
        .data-table .bar-cell {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .data-table .bar-cell__bar {
            height: 6px;
            background: var(--color-primary);
            border-radius: 3px;
            transition: width var(--transition-slow);
        }

        /* ========== FEATURE ROW ========== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .feature-row--reverse {
            direction: rtl;
        }
        .feature-row--reverse>* {
            direction: ltr;
        }
        .feature-row__image {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
            border-radius: var(--radius-card);
            background: #EEEEEE;
        }
        .feature-row__content h3 {
            font-size: 24px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 12px;
        }
        .feature-row__content p {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin: 0 0 20px;
        }
        .feature-row__tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }
        .feature-row__tag {
            font-size: 12px;
            padding: 5px 12px;
            border-radius: var(--radius-tag);
            background: var(--color-accent-light);
            color: var(--color-accent);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .feature-row {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .feature-row__content h3 {
                font-size: 20px;
            }
        }

        /* ========== INFO LIST ========== */
        .info-list {
            list-style: none;
            padding: 0;
            margin: 0;
            max-width: 900px;
        }
        .info-list li {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border-light);
        }
        .info-list li:last-child {
            border-bottom: none;
        }
        .info-list__icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
        }
        .info-list__icon--warning {
            background: #FFF3E0;
            color: var(--color-primary);
        }
        .info-list__icon--danger {
            background: #FFEBEE;
            color: var(--color-danger);
        }
        .info-list__icon--success {
            background: #E8F5E9;
            color: var(--color-accent);
        }
        .info-list__content h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 4px;
        }
        .info-list__content p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.6;
        }
        .info-list__date {
            font-size: 12px;
            color: var(--color-text-muted);
            margin-left: auto;
            white-space: nowrap;
            flex-shrink: 0;
        }
        @media (max-width: 600px) {
            .info-list li {
                flex-wrap: wrap;
                gap: 8px;
            }
            .info-list__date {
                margin-left: 0;
                width: 100%;
                text-align: left;
            }
        }

        /* ========== QUOTE CARDS ========== */
        .quote-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .quote-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px;
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
        }
        .quote-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .quote-card__icon {
            font-size: 32px;
            color: var(--color-primary-light);
            position: absolute;
            top: 16px;
            left: 20px;
            opacity: 0.5;
        }
        .quote-card__text {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 20px 0 16px;
            font-style: italic;
            padding-left: 8px;
            border-left: 3px solid var(--color-primary);
        }
        .quote-card__author {
            font-size: 13px;
            color: var(--color-text-muted);
            font-weight: 500;
        }
        .quote-card__author strong {
            color: var(--color-text);
        }
        @media (max-width: 768px) {
            .quote-cards {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border-light);
        }
        .faq-item__question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 20px 0;
            background: none;
            font-size: 17px;
            font-weight: 500;
            color: var(--color-text);
            text-align: left;
            cursor: pointer;
            transition: color var(--transition-fast);
            gap: 16px;
        }
        .faq-item__question:hover {
            color: var(--color-primary);
        }
        .faq-item__question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--color-text-muted);
            transition: all var(--transition-fast);
            border: 1px solid var(--color-divider);
            border-radius: 50%;
        }
        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0;
        }
        .faq-item__answer.open {
            max-height: 400px;
            padding: 0 0 20px;
        }
        .faq-item__answer p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin: 0;
            background: #F9F9F9;
            padding: 16px 20px;
            border-radius: 6px;
        }
        @media (max-width: 600px) {
            .faq-item__question {
                font-size: 15px;
                padding: 16px 0;
            }
            .faq-item__answer p {
                font-size: 14px;
                padding: 12px 14px;
            }
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-bg-gray);
            padding: 80px 0;
        }
        .cta-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            max-width: 1000px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .cta-info h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 12px;
        }
        .cta-info p {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
        }
        .cta-form {
            background: var(--color-white);
            padding: 32px;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        .cta-form__title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 20px;
        }
        .cta-form input {
            width: 100%;
            padding: 12px 0;
            border: none;
            border-bottom: 2px solid #CCCCCC;
            font-size: 15px;
            margin-bottom: 18px;
            transition: border-color var(--transition-fast);
            background: transparent;
            color: var(--color-text);
        }
        .cta-form input:focus {
            border-bottom-color: var(--color-primary);
        }
        .cta-form input::placeholder {
            color: #AAAAAA;
        }
        .cta-form button {
            width: 100%;
            padding: 13px 28px;
            background: var(--color-primary);
            color: #fff;
            font-size: 16px;
            font-weight: 500;
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
            margin-top: 4px;
        }
        .cta-form button:hover {
            background: var(--color-primary-hover);
            filter: brightness(0.95);
        }
        .cta-form button:active {
            transform: scale(0.98);
        }
        @media (max-width: 768px) {
            .cta-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cta-section {
                padding: 50px 0;
            }
            .cta-info h2 {
                font-size: 22px;
            }
            .cta-form {
                padding: 24px;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-dark-bg);
            color: #AAAAAA;
            padding: 50px 0 0;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid #333;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 8px;
        }
        .footer-slogan {
            font-size: 13px;
            color: #888;
            margin: 0 0 6px;
            line-height: 1.5;
        }
        .footer-col__title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            color: #AAAAAA;
            font-size: 13px;
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-white);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            gap: 12px;
            font-size: 12px;
            color: #777;
        }
        .footer-bottom-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .footer-bottom-links a {
            color: #777;
            transition: color var(--transition-fast);
        }
        .footer-bottom-links a:hover {
            color: #CCC;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom-links {
                justify-content: center;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ========== SCROLL REVEAL ========== */
        .reveal {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ========== TAG CLOUD ========== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .tag-cloud a {
            font-size: 14px;
            padding: 8px 16px;
            border: 1px solid var(--color-border);
            border-radius: 20px;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            background: var(--color-white);
        }
        .tag-cloud a:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: var(--color-primary-subtle);
        }
        .tag-cloud a.tag--hot {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: var(--color-primary-subtle);
            font-weight: 500;
        }

/* roulang page: category2 */
:root {
            --color-primary: #E8551A;
            --color-primary-deep: #D4480F;
            --color-primary-hover: #B8450D;
            --color-primary-light: rgba(232, 85, 26, 0.10);
            --color-primary-subtle: rgba(232, 85, 26, 0.06);
            --color-dark: #1E1E1E;
            --color-dark-bg: #1A1A1A;
            --color-bg: #FFFFFF;
            --color-bg-alt: #FAFAFA;
            --color-bg-gray: #F5F5F5;
            --color-border: #E8E8E8;
            --color-border-light: #ECECEC;
            --color-divider: #E0E0E0;
            --color-text: #1E1E1E;
            --color-text-secondary: #555555;
            --color-text-muted: #888888;
            --color-text-light: #AAAAAA;
            --color-accent: #0F4C3A;
            --color-accent-light: #0F4C3A15;
            --color-danger: #C0392B;
            --color-white: #FFFFFF;
            --color-charcoal: #333333;
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-input: 4px;
            --radius-tag: 2px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
            --transition-slow: 0.6s ease;
            --section-pad-desktop: 100px;
            --section-pad-tablet: 70px;
            --section-pad-mobile: 50px;
            --container-max: 1200px;
            --content-width: 750px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        a {
            text-decoration: none;
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-hover);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }
        input,
        textarea,
        select {
            font-family: inherit;
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container--narrow {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            height: 76px;
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }
        .header-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .header-logo:hover {
            color: var(--color-primary-deep);
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 36px;
        }
        .header-nav a {
            font-size: 15px;
            font-weight: 400;
            color: var(--color-charcoal);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .header-nav a:hover {
            color: var(--color-primary);
        }
        .header-nav a.active {
            color: var(--color-primary);
            font-weight: 500;
        }
        .header-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .header-search-icon {
            font-size: 18px;
            color: var(--color-charcoal);
            cursor: pointer;
            transition: color var(--transition-fast);
            background: none;
            border: none;
            padding: 4px;
        }
        .header-search-icon:hover {
            color: var(--color-primary);
        }
        .header-cta-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-primary);
            padding: 8px 18px;
            border: 1px solid var(--color-primary);
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .header-cta-link:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-deep);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-charcoal);
            border-radius: 1px;
            transition: all var(--transition-smooth);
        }
        .hamburger span:nth-child(3) {
            width: 16px;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            width: 24px;
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: var(--color-white);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
        }
        .mobile-menu-overlay.active {
            display: flex;
        }
        .mobile-menu-overlay a {
            font-size: 20px;
            font-weight: 500;
            color: var(--color-charcoal);
            transition: color var(--transition-fast);
        }
        .mobile-menu-overlay a:hover,
        .mobile-menu-overlay a.active {
            color: var(--color-primary);
        }
        .mobile-menu-close {
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 28px;
            background: none;
            border: none;
            color: var(--color-charcoal);
            cursor: pointer;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            background: var(--color-bg-alt);
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border-light);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .separator {
            color: var(--color-divider);
        }
        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
        }

        /* ========== HERO SECTION ========== */
        .category-hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--color-dark-bg);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            isolation: isolate;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 26, 0.88) 0%, rgba(26, 26, 26, 0.65) 40%, rgba(26, 26, 26, 0.78) 100%);
            z-index: 1;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 80px 0;
        }
        .category-hero .hero-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 20px;
        }
        .category-hero .hero-badge {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.3px;
            background: rgba(232, 85, 26, 0.25);
            color: #FFB088;
            border: 1px solid rgba(232, 85, 26, 0.35);
            backdrop-filter: blur(4px);
        }
        .category-hero .hero-badge.hot {
            background: rgba(192, 57, 43, 0.3);
            color: #FF9E9E;
            border: 1px solid rgba(192, 57, 43, 0.4);
            animation: pulse-badge 2s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(192, 57, 43, 0.4);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(192, 57, 43, 0);
            }
        }
        .category-hero .hero-title {
            font-size: 48px;
            font-weight: 800;
            color: var(--color-white);
            line-height: 1.2;
            margin: 0 0 16px;
            max-width: 700px;
            letter-spacing: 0.5px;
        }
        .category-hero .hero-subtitle {
            font-size: 18px;
            font-weight: 300;
            color: #CCCCCC;
            line-height: 1.7;
            margin: 0 0 28px;
            max-width: 600px;
        }
        .category-hero .hero-cta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }
        .btn-primary {
            display: inline-block;
            padding: 12px 28px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 500;
            font-size: 15px;
            transition: all var(--transition-fast);
            border: none;
            cursor: pointer;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--color-primary-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(232, 85, 26, 0.3);
        }
        .btn-secondary {
            display: inline-block;
            padding: 11px 26px;
            background: transparent;
            color: var(--color-white);
            border: 1px solid rgba(255, 255, 255, 0.5);
            border-radius: var(--radius-btn);
            font-weight: 500;
            font-size: 15px;
            transition: all var(--transition-fast);
            cursor: pointer;
            text-align: center;
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.8);
            color: #fff;
        }
        .hero-stats-mini {
            display: flex;
            gap: 32px;
            margin-top: 36px;
            flex-wrap: wrap;
        }
        .hero-stats-mini .stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .hero-stats-mini .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1;
        }
        .hero-stats-mini .stat-label {
            font-size: 13px;
            color: #AAAAAA;
            font-weight: 300;
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--section-pad-desktop) 0;
        }
        .section--dark {
            background: var(--color-dark-bg);
            color: var(--color-white);
        }
        .section--alt {
            background: var(--color-bg-alt);
        }
        .section--gray {
            background: var(--color-bg-gray);
        }
        .section__header {
            margin-bottom: 48px;
        }
        .section__label {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
        }
        .section__title {
            font-size: 30px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 12px;
            line-height: 1.3;
        }
        .section--dark .section__title {
            color: var(--color-white);
        }
        .section__desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 650px;
            line-height: 1.7;
            margin: 0;
        }
        .section--dark .section__desc {
            color: #BBBBBB;
        }

        /* ========== METRICS DASHBOARD ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .metric-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .metric-card__icon {
            font-size: 28px;
            color: var(--color-primary);
            margin-bottom: 12px;
            opacity: 0.8;
        }
        .metric-card__number {
            font-size: 42px;
            font-weight: 800;
            color: var(--color-dark);
            line-height: 1;
            margin-bottom: 6px;
            letter-spacing: -1px;
        }
        .metric-card__label {
            font-size: 14px;
            color: var(--color-text-muted);
            font-weight: 400;
        }
        .metric-card__trend {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 8px;
            border-radius: 10px;
            margin-top: 8px;
        }
        .metric-card__trend.up {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }
        .metric-card__trend.hot {
            background: rgba(232, 85, 26, 0.1);
            color: var(--color-primary);
        }

        /* ========== DUAL-LIST (双栏列表) ========== */
        .dual-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--color-white);
        }
        .dual-list__item {
            display: flex;
            gap: 24px;
            padding: 22px 24px;
            border-bottom: 1px solid var(--color-border-light);
            transition: background var(--transition-fast);
            align-items: flex-start;
        }
        .dual-list__item:last-child {
            border-bottom: none;
        }
        .dual-list__item:hover {
            background: var(--color-bg-alt);
        }
        .dual-list__thumb {
            flex-shrink: 0;
            width: 200px;
            height: 130px;
            border-radius: 6px;
            overflow: hidden;
            background: #EEEEEE;
        }
        .dual-list__thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .dual-list__item:hover .dual-list__thumb img {
            transform: scale(1.04);
        }
        .dual-list__body {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-width: 0;
        }
        .dual-list__tag-row {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 8px;
        }
        .dual-list__tag {
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            background: var(--color-primary-subtle);
            color: var(--color-primary);
            white-space: nowrap;
        }
        .dual-list__tag.accent {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }
        .dual-list__title {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .dual-list__title a {
            color: var(--color-text);
            transition: color var(--transition-fast);
        }
        .dual-list__title a:hover {
            color: var(--color-primary);
        }
        .dual-list__excerpt {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin: 0 0 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .dual-list__meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--color-text-muted);
        }
        .dual-list__read-more {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }
        .dual-list__read-more:hover {
            gap: 8px;
            color: var(--color-primary-hover);
        }

        /* ========== RANKING TABLE ========== */
        .ranking-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            background: var(--color-white);
        }
        .ranking-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 15px;
            min-width: 700px;
        }
        .ranking-table thead th {
            background: var(--color-bg-alt);
            padding: 14px 16px;
            text-align: left;
            font-weight: 600;
            font-size: 13px;
            color: var(--color-text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            border-bottom: 2px solid var(--color-border);
            white-space: nowrap;
        }
        .ranking-table tbody td {
            padding: 14px 16px;
            border-bottom: 1px solid var(--color-border-light);
            vertical-align: middle;
        }
        .ranking-table tbody tr:hover {
            background: var(--color-bg-alt);
        }
        .ranking-table .rank-num {
            font-weight: 700;
            font-size: 18px;
            color: var(--color-primary);
            width: 40px;
        }
        .ranking-table .rank-num.top3 {
            color: var(--color-accent);
        }
        .ranking-table .team-name {
            font-weight: 600;
            color: var(--color-text);
        }
        .ranking-table .bar-cell {
            position: relative;
        }
        .ranking-table .bar-bg {
            height: 8px;
            border-radius: 4px;
            background: #EEEEEE;
            overflow: hidden;
        }
        .ranking-table .bar-fill {
            height: 100%;
            border-radius: 4px;
            background: var(--color-primary);
            transition: width 1.2s ease-out;
        }
        .ranking-table .bar-fill.accent {
            background: var(--color-accent);
        }
        .ranking-table .change-up {
            color: var(--color-accent);
            font-weight: 600;
        }
        .ranking-table .change-down {
            color: var(--color-danger);
            font-weight: 600;
        }

        /* ========== TIMELINE ========== */
        .timeline {
            position: relative;
            padding-left: 32px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 11px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border);
            border-radius: 1px;
        }
        .timeline__item {
            position: relative;
            margin-bottom: 32px;
            padding-left: 28px;
        }
        .timeline__item:last-child {
            margin-bottom: 0;
        }
        .timeline__dot {
            position: absolute;
            left: -27px;
            top: 5px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--color-primary);
            border: 3px solid var(--color-white);
            box-shadow: 0 0 0 4px var(--color-primary-light);
            z-index: 1;
        }
        .timeline__dot.accent {
            background: var(--color-accent);
            box-shadow: 0 0 0 4px var(--color-accent-light);
        }
        .timeline__date {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 4px;
            font-weight: 500;
        }
        .timeline__title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 6px;
            line-height: 1.4;
        }
        .timeline__desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /* ========== COMPARISON CARDS ========== */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .comparison-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            transition: all var(--transition-smooth);
        }
        .comparison-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .comparison-card__header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
            padding-bottom: 14px;
            border-bottom: 1px solid var(--color-border-light);
        }
        .comparison-card__icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
        }
        .comparison-card__icon.orange {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }
        .comparison-card__icon.green {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }
        .comparison-card__team-name {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
        }
        .comparison-card__stat-row {
            display: flex;
            justify-content: space-between;
            padding: 8px 0;
            border-bottom: 1px solid var(--color-border-light);
            font-size: 14px;
        }
        .comparison-card__stat-row:last-child {
            border-bottom: none;
        }
        .comparison-card__stat-label {
            color: var(--color-text-muted);
        }
        .comparison-card__stat-value {
            font-weight: 600;
            color: var(--color-text);
        }

        /* ========== ANALYSIS CARDS ========== */
        .analysis-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .analysis-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .analysis-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .analysis-card__img {
            height: 180px;
            overflow: hidden;
            background: #EEEEEE;
        }
        .analysis-card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .analysis-card:hover .analysis-card__img img {
            transform: scale(1.05);
        }
        .analysis-card__body {
            padding: 20px;
        }
        .analysis-card__tag {
            font-size: 12px;
            font-weight: 500;
            color: var(--color-primary);
            margin-bottom: 8px;
            display: block;
        }
        .analysis-card__title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .analysis-card__title a {
            color: var(--color-text);
        }
        .analysis-card__title a:hover {
            color: var(--color-primary);
        }
        .analysis-card__excerpt {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin: 0 0 12px;
        }
        .analysis-card__date {
            font-size: 13px;
            color: var(--color-text-muted);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border-light);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--color-border-light);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-size: 17px;
            font-weight: 500;
            color: var(--color-text);
            text-align: left;
            gap: 16px;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg-gray);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--color-text-muted);
            transition: all var(--transition-smooth);
        }
        .faq-item.active .faq-icon {
            background: var(--color-primary-light);
            color: var(--color-primary);
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        .faq-answer__inner {
            padding: 0 0 18px 0;
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-primary-light);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            display: flex;
            gap: 40px;
            align-items: center;
            flex-wrap: wrap;
        }
        .cta-section__info {
            flex: 1;
            min-width: 280px;
        }
        .cta-section__title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 10px;
        }
        .cta-section__desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
        }
        .cta-form {
            flex: 1;
            min-width: 300px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .cta-form input {
            padding: 14px 16px;
            border: none;
            border-bottom: 2px solid #CCCCCC;
            background: var(--color-white);
            border-radius: var(--radius-input) var(--radius-input) 0 0;
            font-size: 15px;
            transition: border-color var(--transition-fast);
            width: 100%;
        }
        .cta-form input:focus {
            border-bottom-color: var(--color-primary);
        }
        .cta-form .btn-primary {
            width: 100%;
            padding: 14px;
            font-size: 16px;
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro-block {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            line-height: 1.8;
            font-size: 15px;
            color: var(--color-text-secondary);
        }
        .brand-intro-block strong {
            color: var(--color-text);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-dark-bg);
            color: #AAAAAA;
            padding: 50px 0 30px;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 8px;
        }
        .footer-slogan {
            font-size: 14px;
            color: #888;
            margin: 0 0 6px;
            line-height: 1.6;
        }
        .footer-col__title {
            font-size: 14px;
            font-weight: 600;
            color: #CCCCCC;
            margin-bottom: 12px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            color: #888;
            font-size: 14px;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: #777;
        }
        .footer-bottom-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .footer-bottom-links a {
            color: #888;
        }
        .footer-bottom-links a:hover {
            color: #fff;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .header-nav {
                gap: 24px;
            }
            .header-nav a {
                font-size: 14px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .analysis-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .category-hero .hero-title {
                font-size: 38px;
            }
            .section {
                padding: var(--section-pad-tablet) 0;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
            }
            .header-actions .header-cta-link {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .category-hero {
                min-height: 400px;
            }
            .category-hero .hero-title {
                font-size: 30px;
            }
            .category-hero .hero-subtitle {
                font-size: 15px;
            }
            .hero-stats-mini {
                gap: 20px;
            }
            .hero-stats-mini .stat-number {
                font-size: 26px;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .metric-card__number {
                font-size: 32px;
            }
            .dual-list__item {
                flex-direction: column;
                gap: 14px;
                padding: 16px;
            }
            .dual-list__thumb {
                width: 100%;
                height: 180px;
            }
            .analysis-grid {
                grid-template-columns: 1fr;
            }
            .cta-section {
                flex-direction: column;
                padding: 32px 20px;
                gap: 24px;
            }
            .section {
                padding: var(--section-pad-mobile) 0;
            }
            .section__title {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom-links {
                justify-content: center;
            }
            .timeline {
                padding-left: 20px;
            }
            .timeline__item {
                padding-left: 20px;
            }
            .timeline__dot {
                left: -19px;
            }
            .comparison-card {
                padding: 20px 16px;
            }
            .ranking-table-wrap {
                font-size: 13px;
            }
        }

        @media (max-width: 480px) {
            .category-hero {
                min-height: 340px;
            }
            .category-hero .hero-title {
                font-size: 26px;
            }
            .category-hero .hero-badge {
                font-size: 11px;
                padding: 4px 10px;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .metric-card {
                padding: 20px 16px;
            }
            .metric-card__number {
                font-size: 28px;
            }
            .hero-stats-mini {
                gap: 14px;
            }
            .hero-stats-mini .stat-number {
                font-size: 22px;
            }
            .section__title {
                font-size: 22px;
            }
            .dual-list__thumb {
                height: 140px;
            }
            .dual-list__title {
                font-size: 17px;
            }
            .container {
                padding: 0 16px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 10px 20px;
                font-size: 14px;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #E8551A;
            --color-primary-deep: #D4480F;
            --color-primary-hover: #B8450D;
            --color-primary-light: rgba(232, 85, 26, 0.10);
            --color-primary-subtle: rgba(232, 85, 26, 0.06);
            --color-dark: #1E1E1E;
            --color-dark-bg: #1A1A1A;
            --color-bg: #FFFFFF;
            --color-bg-alt: #FAFAFA;
            --color-bg-gray: #F5F5F5;
            --color-border: #E8E8E8;
            --color-border-light: #ECECEC;
            --color-divider: #E0E0E0;
            --color-text: #1E1E1E;
            --color-text-secondary: #555555;
            --color-text-muted: #888888;
            --color-text-light: #AAAAAA;
            --color-accent: #0F4C3A;
            --color-accent-light: #0F4C3A15;
            --color-danger: #C0392B;
            --color-white: #FFFFFF;
            --color-charcoal: #333333;
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-input: 4px;
            --radius-tag: 2px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
            --transition-slow: 0.6s ease;
            --section-pad-desktop: 100px;
            --section-pad-tablet: 70px;
            --section-pad-mobile: 50px;
            --container-max: 1200px;
            --content-width: 750px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        a {
            text-decoration: none;
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--color-primary-hover);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container--narrow {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            height: 76px;
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }

        .header-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .header-logo:hover {
            color: var(--color-primary-deep);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .header-nav a {
            font-size: 16px;
            font-weight: 400;
            color: var(--color-charcoal);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .header-nav a:hover {
            color: var(--color-primary);
        }

        .header-nav a.active {
            color: var(--color-primary);
            font-weight: 500;
        }

        .header-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .header-search-icon {
            font-size: 18px;
            color: var(--color-charcoal);
            cursor: pointer;
            transition: color var(--transition-fast);
            background: none;
            border: none;
            padding: 4px;
        }

        .header-search-icon:hover {
            color: var(--color-primary);
        }

        .header-cta-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-primary);
            padding: 8px 18px;
            border: 1px solid var(--color-primary);
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .header-cta-link:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-deep);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 4px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
            z-index: 1001;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-charcoal);
            border-radius: 1px;
            transition: all var(--transition-smooth);
        }

        .hamburger span:nth-child(2) {
            width: 16px;
        }

        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--color-white);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
        }

        .mobile-menu-overlay.active {
            display: flex;
        }

        .mobile-menu-overlay a {
            font-size: 20px;
            font-weight: 500;
            color: var(--color-charcoal);
            transition: color var(--transition-fast);
        }

        .mobile-menu-overlay a:hover,
        .mobile-menu-overlay a.active {
            color: var(--color-primary);
        }

        .mobile-menu-close {
            position: absolute;
            top: 24px;
            right: 24px;
            font-size: 28px;
            background: none;
            border: none;
            color: var(--color-charcoal);
            cursor: pointer;
        }

        .section {
            padding: var(--section-pad-desktop) 0;
        }

        .section--alt {
            background: var(--color-bg-alt);
        }

        .section--dark {
            background: var(--color-dark-bg);
            color: var(--color-white);
        }

        .section--gray {
            background: var(--color-bg-gray);
        }

        .section__title {
            font-size: 30px;
            font-weight: 700;
            color: var(--color-dark);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section__subtitle {
            font-size: 17px;
            color: var(--color-text-secondary);
            margin-bottom: 40px;
            line-height: 1.6;
            max-width: 680px;
        }

        .section--dark .section__title {
            color: var(--color-white);
        }

        .section--dark .section__subtitle {
            color: #CCCCCC;
        }

        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 500;
            font-size: 16px;
            transition: all var(--transition-fast);
            cursor: pointer;
            text-align: center;
            white-space: nowrap;
        }

        .btn--primary {
            background: var(--color-primary);
            color: var(--color-white);
            border: none;
        }

        .btn--primary:hover {
            background: var(--color-primary-hover);
            color: var(--color-white);
            transform: translateY(-1px);
        }

        .btn--primary:active {
            transform: scale(0.98);
        }

        .btn--outline {
            background: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn--outline:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-deep);
        }

        .btn--white-outline {
            background: transparent;
            color: var(--color-white);
            border: 1px solid rgba(255, 255, 255, 0.5);
        }

        .btn--white-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--color-white);
            color: var(--color-white);
        }

        .card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-sm);
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .card__title {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 10px;
        }

        .card__desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            font-size: 13px;
            font-weight: 500;
            background: var(--color-primary-subtle);
            color: var(--color-primary);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .tag:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-deep);
        }

        .tag--accent {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }

        .tag--hot {
            background: #FFF0EB;
            color: #E8551A;
            font-weight: 600;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
            padding: 16px 0;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--color-primary);
        }

        .breadcrumb .separator {
            color: var(--color-divider);
        }

        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        .progress-ring {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .progress-ring__svg {
            transform: rotate(-90deg);
        }

        .progress-ring__circle-bg {
            fill: none;
            stroke: #E8E8E8;
        }

        .progress-ring__circle-fg {
            fill: none;
            stroke: var(--color-primary);
            stroke-linecap: round;
            transition: stroke-dashoffset 1.5s ease-out;
        }

        .progress-ring__value {
            position: absolute;
            font-size: 28px;
            font-weight: 700;
            color: var(--color-primary);
        }

        .progress-ring__label {
            position: absolute;
            bottom: -24px;
            font-size: 13px;
            color: var(--color-text-muted);
            white-space: nowrap;
        }

        .stat-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--color-white);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .stat-card__number {
            font-size: 42px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1;
            margin-bottom: 8px;
        }

        .stat-card__label {
            font-size: 14px;
            color: var(--color-text-muted);
            letter-spacing: 0.5px;
        }

        .rank-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .rank-list__item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: background var(--transition-fast);
        }

        .rank-list__item:hover {
            background: var(--color-bg-gray);
            padding-left: 8px;
            border-radius: 4px;
        }

        .rank-list__index {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
            background: var(--color-bg-gray);
            color: var(--color-text-muted);
        }

        .rank-list__item:nth-child(1) .rank-list__index {
            background: #FFD700;
            color: #8B6914;
        }

        .rank-list__item:nth-child(2) .rank-list__index {
            background: #C0C0C0;
            color: #555;
        }

        .rank-list__item:nth-child(3) .rank-list__index {
            background: #CD7F32;
            color: #5C3A1E;
        }

        .rank-list__content {
            flex: 1;
            min-width: 0;
        }

        .rank-list__title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 2px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .rank-list__meta {
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .rank-list__hot {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            flex-shrink: 0;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border-light);
            padding: 0;
        }

        .faq-item__question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 0;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 17px;
            font-weight: 500;
            color: var(--color-dark);
            text-align: left;
            transition: color var(--transition-fast);
            gap: 12px;
        }

        .faq-item__question:hover {
            color: var(--color-primary);
        }

        .faq-item__icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-primary);
            transition: transform var(--transition-smooth);
        }

        .faq-item.active .faq-item__icon {
            transform: rotate(45deg);
        }

        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            padding: 0 0 0 36px;
        }

        .faq-item.active .faq-item__answer {
            max-height: 300px;
            padding: 0 0 18px 36px;
        }

        .faq-item.active .faq-item__question {
            color: var(--color-primary);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-dark);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 10px 0;
            font-size: 15px;
            border: none;
            border-bottom: 2px solid #CCCCCC;
            background: transparent;
            transition: border-color var(--transition-fast);
            font-family: inherit;
            resize: vertical;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            border-bottom-color: var(--color-primary);
        }

        .site-footer {
            background: var(--color-dark-bg);
            color: var(--color-text-light);
            padding: 50px 0 30px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 8px;
        }

        .footer-slogan {
            font-size: 13px;
            color: #AAAAAA;
            margin-bottom: 8px;
            line-height: 1.6;
        }

        .footer-col__title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            color: #AAAAAA;
            font-size: 14px;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--color-white);
        }

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: #888;
        }

        .footer-bottom-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .footer-bottom-links a {
            color: #888;
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: var(--color-white);
        }

        .animate-on-scroll {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .animate-on-scroll.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (max-width: 1024px) {
            .header-nav {
                gap: 24px;
            }
            .header-nav a {
                font-size: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .section {
                padding: var(--section-pad-tablet) 0;
            }
            .section__title {
                font-size: 26px;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
            }
            .header-actions .header-cta-link {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .header-inner {
                padding: 0 16px;
            }
            .section {
                padding: var(--section-pad-mobile) 0;
            }
            .section__title {
                font-size: 24px;
            }
            .section__subtitle {
                font-size: 15px;
                margin-bottom: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                text-align: center;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom-links {
                justify-content: center;
            }
            .card {
                padding: 20px;
            }
            .stat-card__number {
                font-size: 32px;
            }
            .rank-list__item {
                gap: 10px;
                padding: 12px 0;
            }
            .rank-list__title {
                font-size: 14px;
            }
            .container {
                padding: 0 16px;
            }
            .btn {
                padding: 10px 22px;
                font-size: 15px;
            }
        }

        @media (max-width: 480px) {
            .header-logo {
                font-size: 18px;
            }
            .section__title {
                font-size: 22px;
            }
            .stat-card__number {
                font-size: 28px;
            }
            .progress-ring__value {
                font-size: 22px;
            }
            .card__title {
                font-size: 17px;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #E8551A;
            --color-primary-deep: #D4480F;
            --color-primary-hover: #B8450D;
            --color-primary-light: rgba(232, 85, 26, 0.10);
            --color-primary-subtle: rgba(232, 85, 26, 0.06);
            --color-dark: #1E1E1E;
            --color-dark-bg: #1A1A1A;
            --color-bg: #FFFFFF;
            --color-bg-alt: #FAFAFA;
            --color-bg-gray: #F5F5F5;
            --color-border: #E8E8E8;
            --color-border-light: #ECECEC;
            --color-divider: #E0E0E0;
            --color-text: #1E1E1E;
            --color-text-secondary: #555555;
            --color-text-muted: #888888;
            --color-text-light: #AAAAAA;
            --color-accent: #0F4C3A;
            --color-accent-light: #0F4C3A15;
            --color-danger: #C0392B;
            --color-white: #FFFFFF;
            --color-charcoal: #333333;
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-input: 4px;
            --radius-tag: 2px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
            --transition-slow: 0.6s ease;
            --section-pad-desktop: 100px;
            --section-pad-tablet: 70px;
            --section-pad-mobile: 50px;
            --container-max: 1200px;
            --content-width: 750px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--color-primary-hover);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container--narrow {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            height: 76px;
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }

        .header-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .header-logo:hover {
            color: var(--color-primary-deep);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .header-nav a {
            font-size: 16px;
            font-weight: 400;
            color: var(--color-charcoal);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .header-nav a:hover {
            color: var(--color-primary);
        }

        .header-nav a.active {
            color: var(--color-primary);
            font-weight: 500;
        }

        .header-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .header-search-icon {
            font-size: 18px;
            color: var(--color-charcoal);
            cursor: pointer;
            transition: color var(--transition-fast);
            background: none;
            border: none;
            padding: 4px;
        }

        .header-search-icon:hover {
            color: var(--color-primary);
        }

        .header-cta-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-primary);
            padding: 8px 18px;
            border: 1px solid var(--color-primary);
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .header-cta-link:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-deep);
        }

        /* 汉堡菜单 */
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            padding: 8px;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            z-index: 1001;
        }

        .hamburger-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-charcoal);
            border-radius: 1px;
            transition: var(--transition-smooth);
        }

        .hamburger-btn span:nth-child(2) {
            width: 18px;
        }

        .hamburger-btn.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger-btn.active span:nth-child(2) {
            opacity: 0;
            transform: translateX(-10px);
        }

        .hamburger-btn.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* 移动端导航覆盖层 */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: var(--color-white);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 32px;
        }

        .mobile-nav-overlay.active {
            display: flex;
        }

        .mobile-nav-overlay a {
            font-size: 22px;
            font-weight: 500;
            color: var(--color-charcoal);
            transition: color var(--transition-fast);
        }

        .mobile-nav-overlay a:hover,
        .mobile-nav-overlay a.active {
            color: var(--color-primary);
        }

        .mobile-nav-overlay .close-btn {
            position: absolute;
            top: 24px;
            right: 24px;
            font-size: 28px;
            background: none;
            border: none;
            color: var(--color-charcoal);
            cursor: pointer;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb {
            padding: 18px 0;
            font-size: 14px;
            color: var(--color-text-muted);
            background: var(--color-bg-alt);
            border-bottom: 1px solid var(--color-border-light);
        }

        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--color-primary);
        }

        .breadcrumb span {
            color: var(--color-text);
        }

        .breadcrumb .separator {
            margin: 0 8px;
            color: var(--color-divider);
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--section-pad-desktop) 0;
        }

        .section--dark {
            background: var(--color-dark-bg);
            color: var(--color-white);
        }

        .section--alt {
            background: var(--color-bg-alt);
        }

        .section--gray {
            background: var(--color-bg-gray);
        }

        .section__title {
            font-size: 32px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .section--dark .section__title {
            color: var(--color-white);
        }

        .section__subtitle {
            font-size: 18px;
            font-weight: 400;
            color: var(--color-text-secondary);
            margin-bottom: 40px;
            line-height: 1.6;
        }

        .section--dark .section__subtitle {
            color: #CCCCCC;
        }

        .section__header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section__header--left {
            text-align: left;
        }

        /* ========== HERO BANNER ========== */
        .hero-banner {
            position: relative;
            padding: 80px 0;
            background: var(--color-dark-bg);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            color: var(--color-white);
            overflow: hidden;
        }

        .hero-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.55);
            z-index: 1;
        }

        .hero-banner .container {
            position: relative;
            z-index: 2;
        }

        .hero-banner__title {
            font-size: 42px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }

        .hero-banner__subtitle {
            font-size: 18px;
            font-weight: 300;
            color: #CCCCCC;
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 28px;
        }

        .hero-banner__stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 28px;
        }

        .hero-stat {
            text-align: center;
            min-width: 100px;
        }

        .hero-stat__number {
            font-size: 44px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.1;
            letter-spacing: -1px;
        }

        .hero-stat__label {
            font-size: 14px;
            font-weight: 300;
            color: #BBBBBB;
            margin-top: 4px;
        }

        .hero-stat__divider {
            width: 1px;
            background: rgba(255, 255, 255, 0.2);
            align-self: stretch;
            min-height: 60px;
        }

        /* ========== METRICS DASHBOARD ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .metric-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-sm);
        }

        .metric-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .metric-card__icon {
            font-size: 32px;
            color: var(--color-primary);
            margin-bottom: 12px;
        }

        .metric-card__number {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-dark);
            line-height: 1.2;
            letter-spacing: -1px;
        }

        .metric-card__label {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-top: 6px;
        }

        .metric-card__trend {
            font-size: 13px;
            font-weight: 500;
            margin-top: 8px;
            display: inline-block;
            padding: 3px 10px;
            border-radius: 12px;
        }

        .metric-card__trend--up {
            color: var(--color-accent);
            background: var(--color-accent-light);
        }

        .metric-card__trend--stable {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }

        /* ========== SERVICE MATRIX ========== */
        .service-matrix {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 24px;
        }

        .service-card--large {
            grid-row: span 2;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }

        .service-card--large:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .service-card--large .service-card__img {
            height: 240px;
            background: #EEEEEE;
            overflow: hidden;
        }

        .service-card--large .service-card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .service-card--large .service-card__body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .service-card--large .service-card__title {
            font-size: 22px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 10px;
        }

        .service-card--large .service-card__desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            flex: 1;
        }

        .service-card--small {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .service-card--small:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .service-card--small .service-card__icon {
            font-size: 28px;
            color: var(--color-primary);
            margin-bottom: 10px;
        }

        .service-card--small .service-card__title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .service-card--small .service-card__desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        .service-card__link {
            display: inline-block;
            margin-top: 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }

        .service-card__link:hover {
            color: var(--color-primary-hover);
            text-decoration: underline;
        }

        .service-card__link i {
            margin-left: 4px;
            font-size: 12px;
            transition: transform var(--transition-fast);
        }

        .service-card__link:hover i {
            transform: translateX(3px);
        }

        /* ========== COMPARISON TABLE ========== */
        .comparison-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-border);
        }

        .comparison-col {
            padding: 40px 32px;
        }

        .comparison-col--left {
            background: #F9F9F9;
            border-right: 1px solid var(--color-border);
        }

        .comparison-col--right {
            background: var(--color-white);
        }

        .comparison-col__title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--color-text);
        }

        .comparison-col--right .comparison-col__title {
            color: var(--color-primary);
        }

        .comparison-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--color-border-light);
        }

        .comparison-item:last-child {
            border-bottom: none;
        }

        .comparison-item__bar {
            flex: 1;
            height: 8px;
            background: #E8E8E8;
            border-radius: 4px;
            overflow: hidden;
        }

        .comparison-item__bar-fill {
            height: 100%;
            border-radius: 4px;
            transition: width 1.5s ease-out;
        }

        .comparison-col--left .comparison-item__bar-fill {
            background: #CCCCCC;
        }

        .comparison-col--right .comparison-item__bar-fill {
            background: var(--color-primary);
        }

        .comparison-item__label {
            font-size: 14px;
            color: var(--color-text-secondary);
            min-width: 80px;
        }

        .comparison-item__value {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            min-width: 40px;
            text-align: right;
        }

        /* ========== PROCESS STEPS ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-step {
            text-align: center;
            position: relative;
            padding: 32px 20px;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-sm);
        }

        .process-step:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .process-step__number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: var(--color-white);
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            z-index: 2;
        }

        .process-step__title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .process-step__desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ========== CASE CARDS ========== */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .case-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-sm);
        }

        .case-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .case-card__img {
            height: 200px;
            background: #EEEEEE;
            overflow: hidden;
        }

        .case-card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-card__body {
            padding: 20px;
        }

        .case-card__tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--color-primary);
            background: var(--color-primary-light);
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
        }

        .case-card__title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .case-card__desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: var(--content-width);
            margin: 0 auto;
        }

        .faq-item {
            border-top: 1px solid var(--color-border-light);
            overflow: hidden;
        }

        .faq-item:last-child {
            border-bottom: 1px solid var(--color-border-light);
        }

        .faq-item__question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 0;
            font-size: 18px;
            font-weight: 500;
            color: var(--color-text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            text-align: left;
            transition: color var(--transition-fast);
            line-height: 1.5;
        }

        .faq-item__question:hover {
            color: var(--color-primary);
        }

        .faq-item__icon {
            font-size: 16px;
            color: var(--color-text-muted);
            transition: transform var(--transition-smooth);
            flex-shrink: 0;
            margin-left: 16px;
        }

        .faq-item.active .faq-item__icon {
            transform: rotate(45deg);
            color: var(--color-primary);
        }

        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            background: #F9F9F9;
            border-radius: 0 0 var(--radius-card) var(--radius-card);
        }

        .faq-item.active .faq-item__answer {
            max-height: 400px;
        }

        .faq-item__answer-inner {
            padding: 0 20px 20px 20px;
            font-size: 16px;
            font-weight: 400;
            line-height: 1.8;
            color: #444;
        }

        .faq-item.active .faq-item__answer-inner {
            padding: 0 20px 20px 20px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-primary-subtle);
            border-radius: 0;
            padding: var(--section-pad-desktop) 0;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cta-info__title {
            font-size: 28px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 12px;
        }

        .cta-info__desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .cta-form {
            background: var(--color-white);
            padding: 32px;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        .cta-form__title {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .cta-form__subtitle {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            font-size: 15px;
            border: none;
            border-bottom: 2px solid #CCCCCC;
            background: var(--color-bg-gray);
            border-radius: var(--radius-input) var(--radius-input) 0 0;
            transition: border-color var(--transition-fast);
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-bottom-color: var(--color-primary);
            background: #FEFEFE;
        }

        .btn {
            display: inline-block;
            padding: 12px 28px;
            font-size: 16px;
            font-weight: 500;
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
            cursor: pointer;
            text-align: center;
        }

        .btn--primary {
            background: var(--color-primary);
            color: var(--color-white);
            border: none;
        }

        .btn--primary:hover {
            background: var(--color-primary-hover);
            color: var(--color-white);
            transform: translateY(-1px);
        }

        .btn--primary:active {
            transform: scale(0.98);
        }

        .btn--outline {
            background: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn--outline:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-deep);
        }

        .btn--full {
            width: 100%;
        }

        .btn--lg {
            padding: 14px 36px;
            font-size: 17px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-dark-bg);
            color: #AAAAAA;
            padding: 48px 0 24px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 8px;
        }

        .footer-slogan {
            font-size: 14px;
            color: #888;
            margin-bottom: 6px;
            line-height: 1.6;
        }

        .footer-col__title {
            font-size: 15px;
            font-weight: 600;
            color: #CCCCCC;
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: #AAAAAA;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--color-white);
        }

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: #888;
        }

        .footer-bottom-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .footer-bottom-links a {
            color: #AAAAAA;
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: var(--color-white);
        }

        .footer-bottom-links span {
            color: #888;
        }

        /* ========== ANIMATIONS ========== */
        .reveal {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-stagger>* {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .reveal-stagger.visible>*:nth-child(1) {
            transition-delay: 0s;
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-stagger.visible>*:nth-child(2) {
            transition-delay: 0.1s;
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-stagger.visible>*:nth-child(3) {
            transition-delay: 0.2s;
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-stagger.visible>*:nth-child(4) {
            transition-delay: 0.3s;
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-stagger.visible>*:nth-child(5) {
            transition-delay: 0.4s;
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-stagger.visible>*:nth-child(6) {
            transition-delay: 0.5s;
            opacity: 1;
            transform: translateY(0);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .header-nav {
                gap: 24px;
            }
            .header-nav a {
                font-size: 14px;
            }
            .service-matrix {
                grid-template-columns: 1fr 1fr;
            }
            .service-card--large {
                grid-column: span 2;
                grid-row: auto;
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .comparison-wrapper {
                grid-template-columns: 1fr;
            }
            .comparison-col--left {
                border-right: none;
                border-bottom: 1px solid var(--color-border);
            }
            .section {
                padding: var(--section-pad-tablet) 0;
            }
            .hero-banner__title {
                font-size: 34px;
            }
            .section__title {
                font-size: 28px;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
            }
            .hamburger-btn {
                display: flex;
            }
            .header-cta-link {
                display: none;
            }
            .header-inner {
                padding: 0 16px;
            }
            .hero-banner {
                padding: 50px 0;
            }
            .hero-banner__title {
                font-size: 28px;
            }
            .hero-banner__subtitle {
                font-size: 16px;
            }
            .hero-banner__stats {
                gap: 20px;
            }
            .hero-stat__number {
                font-size: 32px;
            }
            .hero-stat__divider {
                display: none;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .service-matrix {
                grid-template-columns: 1fr;
            }
            .service-card--large {
                grid-column: span 1;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .case-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .comparison-wrapper {
                grid-template-columns: 1fr;
            }
            .comparison-col {
                padding: 24px 20px;
            }
            .cta-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom-links {
                justify-content: center;
            }
            .section {
                padding: var(--section-pad-mobile) 0;
            }
            .section__title {
                font-size: 24px;
            }
            .section__subtitle {
                font-size: 15px;
            }
            .faq-item__question {
                font-size: 16px;
            }
            .metric-card__number {
                font-size: 28px;
            }
            .container {
                padding: 0 16px;
            }
            .container--narrow {
                padding: 0 16px;
            }
        }

        @media (max-width: 480px) {
            .hero-banner__title {
                font-size: 24px;
            }
            .hero-banner__stats {
                flex-direction: column;
                gap: 12px;
            }
            .hero-stat {
                text-align: left;
                display: flex;
                align-items: baseline;
                gap: 10px;
            }
            .hero-stat__number {
                font-size: 28px;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .section__title {
                font-size: 22px;
            }
            .cta-form {
                padding: 20px;
            }
            .btn--lg {
                padding: 12px 24px;
                font-size: 15px;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #E8551A;
            --color-primary-deep: #D4480F;
            --color-primary-hover: #B8450D;
            --color-primary-light: rgba(232, 85, 26, 0.10);
            --color-primary-subtle: rgba(232, 85, 26, 0.06);
            --color-dark: #1E1E1E;
            --color-dark-bg: #1A1A1A;
            --color-bg: #FFFFFF;
            --color-bg-alt: #FAFAFA;
            --color-bg-gray: #F5F5F5;
            --color-border: #E8E8E8;
            --color-border-light: #ECECEC;
            --color-divider: #E0E0E0;
            --color-text: #1E1E1E;
            --color-text-secondary: #555555;
            --color-text-muted: #888888;
            --color-text-light: #AAAAAA;
            --color-accent: #0F4C3A;
            --color-accent-light: #0F4C3A15;
            --color-danger: #C0392B;
            --color-white: #FFFFFF;
            --color-charcoal: #333333;
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-input: 4px;
            --radius-tag: 2px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
            --transition-slow: 0.6s ease;
            --section-pad-desktop: 100px;
            --section-pad-tablet: 70px;
            --section-pad-mobile: 50px;
            --container-max: 1200px;
            --content-width: 750px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--color-primary-hover);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container--narrow {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            height: 76px;
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }

        .header-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .header-logo:hover {
            color: var(--color-primary-deep);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .header-nav a {
            font-size: 16px;
            font-weight: 400;
            color: var(--color-charcoal);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .header-nav a:hover {
            color: var(--color-primary);
        }

        .header-nav a.active {
            color: var(--color-primary);
            font-weight: 500;
        }

        .header-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .header-search-icon {
            font-size: 18px;
            color: var(--color-charcoal);
            cursor: pointer;
            transition: color var(--transition-fast);
            background: none;
            border: none;
            padding: 4px;
        }

        .header-search-icon:hover {
            color: var(--color-primary);
        }

        .header-cta-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-primary);
            padding: 8px 18px;
            border: 1px solid var(--color-primary);
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .header-cta-link:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-deep);
        }

        .hamburger-btn {
            display: none;
            flex-direction: column;
            gap: 4px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
        }

        .hamburger-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-charcoal);
            border-radius: 1px;
            transition: all var(--transition-smooth);
        }

        .hamburger-btn span:nth-child(2) {
            width: 18px;
        }

        .hamburger-btn.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger-btn.active span:nth-child(2) {
            opacity: 0;
            width: 0;
        }

        .hamburger-btn.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Mobile Nav */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--color-white);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 32px;
        }

        .mobile-nav-overlay.active {
            display: flex;
        }

        .mobile-nav-overlay a {
            font-size: 22px;
            font-weight: 500;
            color: var(--color-charcoal);
            transition: color var(--transition-fast);
        }

        .mobile-nav-overlay a:hover,
        .mobile-nav-overlay a.active {
            color: var(--color-primary);
        }

        .mobile-nav-close {
            position: absolute;
            top: 24px;
            right: 24px;
            font-size: 28px;
            background: none;
            border: none;
            color: var(--color-charcoal);
            cursor: pointer;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            background: var(--color-bg-alt);
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border-light);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--color-primary);
        }

        .breadcrumb .separator {
            color: var(--color-divider);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
        }

        /* ========== HERO BANNER ========== */
        .hero-banner {
            position: relative;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
        }

        .hero-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 1;
        }

        .hero-banner-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
            padding: 60px 24px;
            color: var(--color-white);
        }

        .hero-banner-content h1 {
            font-size: 44px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 1px;
            line-height: 1.2;
        }

        .hero-banner-content .hero-subtitle {
            font-size: 18px;
            font-weight: 300;
            color: #CCCCCC;
            line-height: 1.6;
            margin-bottom: 28px;
        }

        .hero-banner-content .hero-stats-row {
            display: flex;
            gap: 40px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 20px;
        }

        .hero-stat-item {
            text-align: center;
        }

        .hero-stat-item .stat-number {
            font-size: 48px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1;
            display: block;
        }

        .hero-stat-item .stat-label {
            font-size: 14px;
            color: #BBBBBB;
            margin-top: 6px;
            display: block;
        }

        /* ========== SECTION BASE ========== */
        .section {
            padding: var(--section-pad-desktop) 0;
        }

        .section--alt {
            background: var(--color-bg-alt);
        }

        .section--dark {
            background: var(--color-dark-bg);
            color: var(--color-white);
        }

        .section--gray {
            background: var(--color-bg-gray);
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-header h2 {
            font-size: 30px;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section--dark .section-header h2 {
            color: var(--color-white);
        }

        .section-header .section-subtitle {
            font-size: 16px;
            color: var(--color-text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

        .section--dark .section-header .section-subtitle {
            color: #BBBBBB;
        }

        /* ========== CARDS ========== */
        .card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: all var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: transparent;
        }

        .card-image {
            width: 100%;
            aspect-ratio: 16/9;
            border-radius: 6px;
            overflow: hidden;
            margin-bottom: 18px;
            background: #EEEEEE;
        }

        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .card:hover .card-image img {
            transform: scale(1.03);
        }

        .card-title {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .card-text {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            flex-grow: 1;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 14px;
            flex-wrap: wrap;
        }

        .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: var(--radius-tag);
            background: var(--color-primary-subtle);
            color: var(--color-primary);
            white-space: nowrap;
        }

        .card-tag--accent {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }

        .card-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: 12px;
            transition: all var(--transition-fast);
        }

        .card-link:hover {
            gap: 8px;
            color: var(--color-primary-hover);
        }

        /* ========== BUTTONS ========== */
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 500;
            font-size: 15px;
            transition: all var(--transition-fast);
            text-align: center;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn:active {
            transform: scale(0.98);
        }

        .btn--primary {
            background: var(--color-primary);
            color: var(--color-white);
        }

        .btn--primary:hover {
            background: var(--color-primary-hover);
            color: var(--color-white);
        }

        .btn--outline {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }

        .btn--outline:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-deep);
        }

        .btn--lg {
            padding: 16px 36px;
            font-size: 17px;
            font-weight: 600;
        }

        /* ========== GRID ========== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }

        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .grid-asymmetric {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 28px;
        }

        .grid-asymmetric-reverse {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 28px;
            align-items: center;
        }

        /* ========== METRICS BOARD ========== */
        .metrics-board {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
        }

        .metric-item {
            text-align: center;
            padding: 32px 20px;
            border-right: 1px solid rgba(255, 255, 255, 0.15);
            position: relative;
        }

        .metric-item:last-child {
            border-right: none;
        }

        .metric-number {
            font-size: 52px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1;
            display: block;
            letter-spacing: -1px;
        }

        .metric-label {
            font-size: 14px;
            color: #BBBBBB;
            margin-top: 8px;
            display: block;
            font-weight: 300;
        }

        /* ========== COMPARISON TABLE ========== */
        .comparison-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            max-width: 900px;
            margin: 0 auto;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
        }

        .comparison-col {
            padding: 40px 32px;
        }

        .comparison-col--left {
            background: #F9F9F9;
            border-right: 1px solid var(--color-border);
        }

        .comparison-col--right {
            background: var(--color-white);
            border-left: 3px solid var(--color-primary);
        }

        .comparison-col h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 20px;
            text-align: center;
        }

        .comparison-col--right h3 {
            color: var(--color-primary);
        }

        .comparison-list {
            list-style: none;
            padding: 0;
        }

        .comparison-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--color-border-light);
            font-size: 15px;
            color: var(--color-text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.5;
        }

        .comparison-list li:last-child {
            border-bottom: none;
        }

        .comparison-list li .icon-check {
            color: var(--color-accent);
            flex-shrink: 0;
            margin-top: 3px;
        }

        .comparison-list li .icon-x {
            color: var(--color-danger);
            flex-shrink: 0;
            margin-top: 3px;
        }

        .comparison-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            margin: 8px 0;
        }

        .comparison-bar .bar-track {
            flex: 1;
            height: 8px;
            background: #E8E8E8;
            border-radius: 4px;
            overflow: hidden;
        }

        .comparison-bar .bar-fill {
            height: 100%;
            border-radius: 4px;
            background: var(--color-primary);
            transition: width 1.2s ease-out;
        }

        .comparison-bar .bar-fill--accent {
            background: var(--color-accent);
        }

        .comparison-bar .bar-label {
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            min-width: 80px;
            text-align: right;
        }

        /* ========== TIMELINE / STEPS ========== */
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            max-width: 800px;
            margin: 0 auto;
            position: relative;
        }

        .steps-list::before {
            content: '';
            position: absolute;
            left: 28px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border);
            z-index: 0;
        }

        .step-item {
            display: flex;
            gap: 24px;
            padding: 20px 0;
            position: relative;
            z-index: 1;
        }

        .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--color-white);
            border: 2px solid var(--color-primary);
            color: var(--color-primary);
            font-weight: 700;
            font-size: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            z-index: 2;
            transition: all var(--transition-smooth);
        }

        .step-item:hover .step-number {
            background: var(--color-primary);
            color: var(--color-white);
        }

        .step-content {
            padding-top: 8px;
        }

        .step-content h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 6px;
        }

        .step-content p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-top: 1px solid var(--color-border-light);
            overflow: hidden;
        }

        .faq-item:last-child {
            border-bottom: 1px solid var(--color-border-light);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            cursor: pointer;
            font-size: 18px;
            font-weight: 500;
            color: var(--color-dark);
            transition: color var(--transition-fast);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 16px;
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1.5px solid var(--color-divider);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 16px;
            color: var(--color-text-muted);
            transition: all var(--transition-smooth);
        }

        .faq-item.active .faq-question .faq-icon {
            border-color: var(--color-primary);
            color: var(--color-primary);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            padding: 0 0;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 0 20px 0;
        }

        .faq-item.active .faq-question {
            color: var(--color-primary);
        }

        /* ========== CTA FORM ========== */
        .cta-form-section {
            background: var(--color-primary-subtle);
            border-radius: 0;
        }

        .cta-form-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            max-width: 1000px;
            margin: 0 auto;
        }

        .cta-form-info h3 {
            font-size: 26px;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 12px;
        }

        .cta-form-info p {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        .cta-form {
            background: var(--color-white);
            padding: 36px;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-dark);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: none;
            border-bottom: 2px solid #CCCCCC;
            border-radius: 0;
            font-size: 15px;
            color: var(--color-text);
            background: transparent;
            transition: border-color var(--transition-fast);
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-bottom-color: var(--color-primary);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }

        .form-submit {
            width: 100%;
            padding: 14px;
            background: var(--color-primary);
            color: var(--color-white);
            border: none;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: background var(--transition-fast);
            margin-top: 8px;
        }

        .form-submit:hover {
            background: var(--color-primary-hover);
        }

        .form-submit:active {
            transform: scale(0.98);
        }

        /* ========== FEATURE GRID ========== */
        .feature-icon-block {
            text-align: center;
            padding: 24px 16px;
        }

        .feature-icon-circle {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--color-primary-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 24px;
            color: var(--color-primary);
            transition: all var(--transition-smooth);
        }

        .feature-icon-block:hover .feature-icon-circle {
            background: var(--color-primary);
            color: var(--color-white);
            transform: scale(1.08);
        }

        .feature-icon-block h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 6px;
        }

        .feature-icon-block p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.5;
        }

        /* ========== IMAGE TEXT BLOCK ========== */
        .image-text-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .image-text-block .image-side {
            border-radius: var(--radius-card);
            overflow: hidden;
            aspect-ratio: 4/3;
            background: #EEEEEE;
        }

        .image-text-block .image-side img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .image-text-block .text-side h3 {
            font-size: 26px;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .image-text-block .text-side p {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        .image-text-block .text-side .highlight-list {
            list-style: none;
            padding: 0;
            margin-top: 16px;
        }

        .image-text-block .text-side .highlight-list li {
            padding: 8px 0;
            font-size: 15px;
            color: var(--color-text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .image-text-block .text-side .highlight-list li::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-primary);
            flex-shrink: 0;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-dark-bg);
            color: var(--color-text-light);
            padding: 56px 0 32px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 10px;
        }

        .footer-slogan {
            color: #BBBBBB;
            font-size: 14px;
            line-height: 1.6;
            margin-bottom: 6px;
        }

        .footer-col__title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            color: var(--color-text-light);
            font-size: 14px;
            padding: 5px 0;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--color-white);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #888888;
        }

        .footer-bottom-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }

        .footer-bottom-links a {
            color: #888888;
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: var(--color-white);
        }

        /* ========== SCROLL REVEAL ========== */
        .reveal {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-stagger>* {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .reveal-stagger.visible>*:nth-child(1) {
            transition-delay: 0s;
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-stagger.visible>*:nth-child(2) {
            transition-delay: 0.1s;
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-stagger.visible>*:nth-child(3) {
            transition-delay: 0.2s;
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-stagger.visible>*:nth-child(4) {
            transition-delay: 0.3s;
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-stagger.visible>*:nth-child(5) {
            transition-delay: 0.4s;
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-stagger.visible>*:nth-child(6) {
            transition-delay: 0.5s;
            opacity: 1;
            transform: translateY(0);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .header-nav {
                gap: 24px;
            }
            .header-nav a {
                font-size: 14px;
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .metrics-board {
                grid-template-columns: repeat(2, 1fr);
            }
            .metric-item {
                border-right: 1px solid rgba(255, 255, 255, 0.15);
            }
            .metric-item:nth-child(2) {
                border-right: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cta-form-wrapper {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-banner-content h1 {
                font-size: 36px;
            }
            .comparison-container {
                grid-template-columns: 1fr;
            }
            .comparison-col--left {
                border-right: none;
                border-bottom: 1px solid var(--color-border);
            }
            .comparison-col--right {
                border-left: none;
                border-top: 3px solid var(--color-primary);
            }
            .section {
                padding: var(--section-pad-tablet) 0;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
            }
            .header-actions .header-cta-link {
                display: none;
            }
            .hamburger-btn {
                display: flex;
            }
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
            .grid-asymmetric,
            .grid-asymmetric-reverse {
                grid-template-columns: 1fr;
            }
            .image-text-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .metrics-board {
                grid-template-columns: repeat(2, 1fr);
            }
            .metric-number {
                font-size: 38px;
            }
            .hero-banner-content h1 {
                font-size: 30px;
            }
            .hero-banner {
                min-height: 340px;
            }
            .hero-stat-item .stat-number {
                font-size: 36px;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
            .footer-bottom-links {
                justify-content: center;
            }
            .comparison-col {
                padding: 28px 20px;
            }
            .section {
                padding: var(--section-pad-mobile) 0;
            }
            .cta-form {
                padding: 24px;
            }
            .steps-list::before {
                left: 24px;
            }
            .step-number {
                width: 46px;
                height: 46px;
                font-size: 18px;
            }
            .step-item {
                gap: 16px;
            }
        }

        @media (max-width: 480px) {
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .metrics-board {
                grid-template-columns: 1fr 1fr;
            }
            .hero-banner-content h1 {
                font-size: 26px;
            }
            .hero-banner-content .hero-subtitle {
                font-size: 15px;
            }
            .hero-stat-item .stat-number {
                font-size: 30px;
            }
            .hero-stats-row {
                gap: 20px;
            }
            .card {
                padding: 20px;
            }
            .comparison-col {
                padding: 20px 16px;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .faq-question {
                font-size: 16px;
                padding: 16px 0;
            }
            .header-logo {
                font-size: 18px;
            }
            .site-header {
                height: 64px;
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #E8551A;
            --color-primary-deep: #D4480F;
            --color-primary-hover: #B8450D;
            --color-primary-light: rgba(232, 85, 26, 0.10);
            --color-primary-subtle: rgba(232, 85, 26, 0.06);
            --color-dark: #1E1E1E;
            --color-dark-bg: #1A1A1A;
            --color-bg: #FFFFFF;
            --color-bg-alt: #FAFAFA;
            --color-bg-gray: #F5F5F5;
            --color-border: #E8E8E8;
            --color-border-light: #ECECEC;
            --color-divider: #E0E0E0;
            --color-text: #1E1E1E;
            --color-text-secondary: #555555;
            --color-text-muted: #888888;
            --color-text-light: #AAAAAA;
            --color-accent: #0F4C3A;
            --color-accent-light: #0F4C3A15;
            --color-danger: #C0392B;
            --color-white: #FFFFFF;
            --color-charcoal: #333333;
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-input: 4px;
            --radius-tag: 2px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
            --transition-slow: 0.6s ease;
            --section-pad-desktop: 100px;
            --section-pad-tablet: 70px;
            --section-pad-mobile: 50px;
            --container-max: 1200px;
            --content-width: 750px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--color-primary-hover);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container--narrow {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            height: 76px;
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }

        .header-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .header-logo:hover {
            color: var(--color-primary-deep);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .header-nav a {
            font-size: 16px;
            font-weight: 400;
            color: var(--color-charcoal);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .header-nav a:hover {
            color: var(--color-primary);
        }

        .header-nav a.active {
            color: var(--color-primary);
            font-weight: 500;
        }

        .header-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .header-search-icon {
            font-size: 18px;
            color: var(--color-charcoal);
            cursor: pointer;
            transition: color var(--transition-fast);
            background: none;
            border: none;
            padding: 4px;
        }

        .header-search-icon:hover {
            color: var(--color-primary);
        }

        .header-cta-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-primary);
            padding: 8px 18px;
            border: 1px solid var(--color-primary);
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .header-cta-link:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-deep);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
        }

        .mobile-menu-btn span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-charcoal);
            border-radius: 1px;
            transition: all var(--transition-smooth);
        }

        .mobile-menu-btn span:nth-child(2) {
            width: 16px;
        }

        .mobile-menu-btn.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .mobile-menu-btn.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-menu-btn.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
            width: 24px;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrap {
            background: var(--color-bg-alt);
            border-bottom: 1px solid var(--color-border-light);
            padding: 14px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--color-primary);
        }

        .breadcrumb .separator {
            color: var(--color-divider);
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
        }

        /* ========== PAGE HERO ========== */
        .page-hero {
            background: var(--color-bg-alt);
            padding: 52px 0 60px;
            position: relative;
            overflow: hidden;
        }

        .page-hero__bg {
            position: absolute;
            top: 0;
            right: 0;
            width: 45%;
            height: 100%;
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            pointer-events: none;
        }

        .page-hero__inner {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .page-hero__text {
            flex: 1;
            min-width: 280px;
        }

        .page-hero__label {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-primary);
            background: var(--color-primary-light);
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .page-hero h1 {
            font-size: 38px;
            font-weight: 700;
            color: var(--color-dark);
            line-height: 1.3;
            margin: 0 0 16px;
            letter-spacing: -0.3px;
        }

        .page-hero__subtitle {
            font-size: 17px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            max-width: 560px;
            margin: 0;
        }

        .page-hero__visual {
            flex: 0 0 340px;
            min-width: 260px;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .page-hero__visual img {
            width: 100%;
            height: 240px;
            object-fit: cover;
            border-radius: var(--radius-card);
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--section-pad-desktop) 0;
        }

        .section--alt {
            background: var(--color-bg-alt);
        }

        .section--dark {
            background: var(--color-dark-bg);
            color: var(--color-white);
        }

        .section__header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section__header h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--color-dark);
            margin: 0 0 12px;
            letter-spacing: -0.2px;
        }

        .section--dark .section__header h2 {
            color: var(--color-white);
        }

        .section__header p {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

        .section--dark .section__header p {
            color: var(--color-text-light);
        }

        /* ========== FILTER BAR ========== */
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            padding: 20px 24px;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 36px;
            box-shadow: var(--shadow-sm);
        }

        .filter-bar__group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-bar__label {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            white-space: nowrap;
        }

        .filter-bar select {
            padding: 10px 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-input);
            font-size: 14px;
            color: var(--color-text);
            background: var(--color-bg);
            cursor: pointer;
            min-width: 130px;
            transition: border-color var(--transition-fast);
        }

        .filter-bar select:focus {
            border-color: var(--color-primary);
        }

        .filter-bar__btn {
            padding: 10px 20px;
            background: var(--color-primary);
            color: var(--color-white);
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .filter-bar__btn:hover {
            background: var(--color-primary-hover);
        }

        .filter-bar__btn--outline {
            background: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .filter-bar__btn--outline:hover {
            background: var(--color-primary-light);
        }

        /* ========== TIMELINE ========== */
        .timeline {
            position: relative;
            padding-left: 40px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 18px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 32px;
            padding: 20px 24px;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            transition: all var(--transition-smooth);
        }

        .timeline-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 28px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-primary);
            border: 3px solid var(--color-white);
            box-shadow: 0 0 0 2px var(--color-primary);
            z-index: 2;
        }

        .timeline-item--past::before {
            background: var(--color-accent);
            box-shadow: 0 0 0 2px var(--color-accent);
        }

        .timeline-item__date {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            text-transform: uppercase;
            letter-spacing: 0.8px;
            margin-bottom: 8px;
        }

        .timeline-item--past .timeline-item__date {
            color: var(--color-accent);
        }

        .timeline-item__match {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .timeline-item__team {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-dark);
            min-width: 80px;
        }

        .timeline-item__score {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            padding: 6px 16px;
            background: var(--color-primary-subtle);
            border-radius: var(--radius-tag);
            letter-spacing: 1px;
        }

        .timeline-item--past .timeline-item__score {
            color: var(--color-accent);
            background: var(--color-accent-light);
        }

        .timeline-item__vs {
            font-size: 14px;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        .timeline-item__league {
            font-size: 12px;
            color: var(--color-text-muted);
            background: var(--color-bg-gray);
            padding: 4px 10px;
            border-radius: 12px;
            white-space: nowrap;
        }

        .timeline-item__time {
            font-size: 14px;
            color: var(--color-text-secondary);
            font-weight: 500;
            margin-left: auto;
            white-space: nowrap;
        }

        /* ========== RESULT TABLE ========== */
        .result-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        .result-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 15px;
            min-width: 700px;
        }

        .result-table thead {
            background: var(--color-dark-bg);
            color: var(--color-white);
        }

        .result-table thead th {
            padding: 14px 16px;
            font-weight: 500;
            font-size: 13px;
            text-align: left;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .result-table tbody tr {
            border-bottom: 1px solid var(--color-border-light);
            transition: background var(--transition-fast);
        }

        .result-table tbody tr:hover {
            background: var(--color-bg-alt);
        }

        .result-table tbody td {
            padding: 14px 16px;
            color: var(--color-text);
            vertical-align: middle;
        }

        .result-table .score-cell {
            font-weight: 700;
            font-size: 16px;
            color: var(--color-primary);
            letter-spacing: 1px;
        }

        .result-table .status-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 12px;
            white-space: nowrap;
        }

        .status-tag--live {
            background: #C0392B;
            color: #fff;
            animation: pulse-live 1.5s infinite;
        }

        .status-tag--finished {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }

        .status-tag--upcoming {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }

        @keyframes pulse-live {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.6;
            }
        }

        /* ========== LEAGUE CARDS ========== */
        .league-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: 20px;
        }

        .league-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition-smooth);
            cursor: default;
        }

        .league-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary);
        }

        .league-card__icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 14px;
            border-radius: 50%;
            overflow: hidden;
            background: var(--color-bg-gray);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .league-card__icon img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .league-card__name {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 4px;
        }

        .league-card__count {
            font-size: 13px;
            color: var(--color-text-muted);
        }

        /* ========== STATS ROW ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-card {
            text-align: center;
            padding: 28px 20px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-card);
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: all var(--transition-smooth);
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        .stat-card__number {
            font-size: 42px;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -1px;
            line-height: 1;
            margin-bottom: 8px;
        }

        .stat-card__label {
            font-size: 14px;
            color: var(--color-text-light);
            font-weight: 400;
        }

        /* ========== SUBSCRIBE CTA ========== */
        .subscribe-cta {
            background: var(--color-primary-light);
            border: 1px solid var(--color-primary);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            gap: 32px;
            flex-wrap: wrap;
        }

        .subscribe-cta__text {
            flex: 1;
            min-width: 240px;
        }

        .subscribe-cta__text h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-dark);
            margin: 0 0 8px;
        }

        .subscribe-cta__text p {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        .subscribe-cta__actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            flex-shrink: 0;
        }

        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-align: center;
            white-space: nowrap;
        }

        .btn--primary {
            background: var(--color-primary);
            color: var(--color-white);
            border: none;
        }

        .btn--primary:hover {
            background: var(--color-primary-hover);
            color: var(--color-white);
            transform: translateY(-1px);
        }

        .btn--outline {
            background: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn--outline:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-deep);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: var(--content-width);
            margin: 0 auto;
        }

        .faq-item {
            border-top: 1px solid var(--color-border-light);
            overflow: hidden;
        }

        .faq-item:last-child {
            border-bottom: 1px solid var(--color-border-light);
        }

        .faq-item__question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 17px;
            font-weight: 500;
            color: var(--color-dark);
            text-align: left;
            transition: color var(--transition-fast);
            gap: 16px;
        }

        .faq-item__question:hover {
            color: var(--color-primary);
        }

        .faq-item__icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1.5px solid var(--color-divider);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--color-text-muted);
            transition: all var(--transition-smooth);
        }

        .faq-item.active .faq-item__icon {
            border-color: var(--color-primary);
            color: var(--color-primary);
            transform: rotate(45deg);
        }

        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 0;
        }

        .faq-item.active .faq-item__answer {
            max-height: 300px;
            padding: 0 0 20px;
        }

        .faq-item__answer p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin: 0;
            padding-left: 44px;
        }

        /* ========== FORM SECTION ========== */
        .form-section {
            background: var(--color-bg-alt);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }

        .form-section__info h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-dark);
            margin: 0 0 12px;
        }

        .form-section__info p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0 0 20px;
        }

        .form-section__info ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .form-section__info ul li {
            padding: 8px 0;
            font-size: 15px;
            color: var(--color-text);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .form-section__info ul li i {
            color: var(--color-accent);
            font-size: 14px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 12px 14px;
            border: none;
            border-bottom: 2px solid #CCCCCC;
            border-radius: 0;
            font-size: 15px;
            color: var(--color-text);
            background: var(--color-white);
            transition: border-color var(--transition-fast);
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-bottom-color: var(--color-primary);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }

        .form-submit-btn {
            width: 100%;
            padding: 14px 28px;
            background: var(--color-primary);
            color: var(--color-white);
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-fast);
            border: none;
            margin-top: 8px;
        }

        .form-submit-btn:hover {
            background: var(--color-primary-hover);
            transform: translateY(-1px);
        }

        .form-submit-btn:active {
            transform: scale(0.98);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-dark-bg);
            color: var(--color-text-light);
            padding: 56px 0 28px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 8px;
        }

        .footer-slogan {
            font-size: 14px;
            color: var(--color-text-muted);
            margin: 0 0 8px;
            line-height: 1.6;
        }

        .footer-col__title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .footer-col a {
            display: block;
            color: var(--color-text-light);
            font-size: 14px;
            padding: 6px 0;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--color-white);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .footer-bottom-links {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
            align-items: center;
        }

        .footer-bottom-links a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: var(--color-white);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .header-nav {
                gap: 24px;
            }
            .header-nav a {
                font-size: 14px;
            }
            .page-hero__visual {
                flex: 0 0 260px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .form-section {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 36px 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .section {
                padding: var(--section-pad-tablet) 0;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--color-white);
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 28px;
                z-index: 999;
                padding: 80px 24px;
            }
            .header-nav.open {
                display: flex;
            }
            .header-nav a {
                font-size: 20px;
                font-weight: 500;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .header-cta-link {
                display: none;
            }
            .header-actions {
                gap: 8px;
            }
            .page-hero__inner {
                flex-direction: column;
                gap: 28px;
            }
            .page-hero__visual {
                flex: 0 0 auto;
                width: 100%;
                max-width: 400px;
            }
            .page-hero__visual img {
                height: 180px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .timeline {
                padding-left: 30px;
            }
            .timeline-item::before {
                left: -22px;
                width: 8px;
                height: 8px;
            }
            .timeline::before {
                left: 12px;
            }
            .timeline-item__match {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .timeline-item__time {
                margin-left: 0;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-card__number {
                font-size: 32px;
            }
            .league-grid {
                grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
                gap: 14px;
            }
            .subscribe-cta {
                flex-direction: column;
                text-align: center;
                padding: 28px 20px;
            }
            .subscribe-cta__actions {
                justify-content: center;
            }
            .form-section {
                padding: 28px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
            .footer-bottom-links {
                justify-content: center;
            }
            .section {
                padding: var(--section-pad-mobile) 0;
            }
            .filter-bar {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
                padding: 16px;
            }
            .filter-bar__group {
                flex-direction: column;
                align-items: stretch;
            }
            .filter-bar select {
                width: 100%;
            }
        }

        @media (max-width: 480px) {
            .page-hero h1 {
                font-size: 24px;
            }
            .page-hero__subtitle {
                font-size: 15px;
            }
            .section__header h2 {
                font-size: 24px;
            }
            .stats-row {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .stat-card__number {
                font-size: 28px;
            }
            .league-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .result-table-wrap {
                font-size: 13px;
            }
            .timeline-item {
                padding: 14px 16px;
            }
            .timeline-item__team {
                font-size: 15px;
            }
            .timeline-item__score {
                font-size: 18px;
                padding: 4px 12px;
            }
            .faq-item__question {
                font-size: 15px;
                padding: 16px 0;
            }
            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
            .container {
                padding: 0 16px;
            }
        }

/* roulang page: category7 */
:root {
            --color-primary: #E8551A;
            --color-primary-deep: #D4480F;
            --color-primary-hover: #B8450D;
            --color-primary-light: rgba(232, 85, 26, 0.10);
            --color-primary-subtle: rgba(232, 85, 26, 0.06);
            --color-dark: #1E1E1E;
            --color-dark-bg: #1A1A1A;
            --color-bg: #FFFFFF;
            --color-bg-alt: #FAFAFA;
            --color-bg-gray: #F5F5F5;
            --color-border: #E8E8E8;
            --color-border-light: #ECECEC;
            --color-divider: #E0E0E0;
            --color-text: #1E1E1E;
            --color-text-secondary: #555555;
            --color-text-muted: #888888;
            --color-text-light: #AAAAAA;
            --color-accent: #0F4C3A;
            --color-accent-light: #0F4C3A15;
            --color-danger: #C0392B;
            --color-white: #FFFFFF;
            --color-charcoal: #333333;
            --radius-card: 8px;
            --radius-btn: 4px;
            --radius-input: 4px;
            --radius-tag: 2px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
            --transition-slow: 0.6s ease;
            --section-pad-desktop: 100px;
            --section-pad-tablet: 70px;
            --section-pad-mobile: 50px;
            --container-max: 1200px;
            --content-width: 750px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
            margin: 0;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        a {
            text-decoration: none;
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--color-primary-hover);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container--narrow {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            height: 76px;
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }

        .header-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .header-logo:hover {
            color: var(--color-primary-deep);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .header-nav a {
            font-size: 16px;
            font-weight: 400;
            color: var(--color-charcoal);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .header-nav a:hover {
            color: var(--color-primary);
        }

        .header-nav a.active {
            color: var(--color-primary);
            font-weight: 500;
        }

        .header-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .header-search-icon {
            font-size: 18px;
            color: var(--color-charcoal);
            cursor: pointer;
            transition: color var(--transition-fast);
            background: none;
            border: none;
            padding: 4px;
        }

        .header-search-icon:hover {
            color: var(--color-primary);
        }

        .header-cta-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-primary);
            padding: 8px 18px;
            border: 1px solid var(--color-primary);
            border-radius: var(--radius-btn);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .header-cta-link:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-deep);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            z-index: 1001;
        }

        .mobile-menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-charcoal);
            border-radius: 1px;
            transition: all var(--transition-fast);
        }

        .mobile-menu-toggle span:nth-child(2) {
            width: 18px;
        }

        .mobile-menu-panel {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: var(--color-white);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 32px;
        }

        .mobile-menu-panel.active {
            display: flex;
        }

        .mobile-menu-panel a {
            font-size: 20px;
            color: var(--color-charcoal);
            font-weight: 500;
            transition: color var(--transition-fast);
        }

        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            color: var(--color-primary);
        }

        .mobile-menu-close {
            position: absolute;
            top: 24px;
            right: 24px;
            font-size: 28px;
            background: none;
            border: none;
            cursor: pointer;
            color: var(--color-charcoal);
            z-index: 1002;
        }

        .section {
            padding: var(--section-pad-desktop) 0;
        }

        .section--dark {
            background: var(--color-dark-bg);
            color: var(--color-white);
        }

        .section--alt {
            background: var(--color-bg-alt);
        }

        .section--gray {
            background: var(--color-bg-gray);
        }

        .section--primary-subtle {
            background: var(--color-primary-subtle);
        }

        .section-header {
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }

        .section--dark .section-header h2 {
            color: var(--color-white);
        }

        .section-header p {
            font-size: 16px;
            color: var(--color-text-muted);
            margin: 0;
            max-width: 600px;
        }

        .section--dark .section-header p {
            color: #BBBBBB;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 500;
            font-size: 16px;
            transition: all var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
            gap: 8px;
        }

        .btn-primary {
            background: var(--color-primary);
            color: var(--color-white);
            border: 1px solid var(--color-primary);
        }

        .btn-primary:hover {
            background: var(--color-primary-hover);
            border-color: var(--color-primary-hover);
            color: var(--color-white);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }

        .btn-outline:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-deep);
        }

        .btn-white {
            background: var(--color-white);
            color: var(--color-primary);
            border: 1px solid var(--color-white);
        }

        .btn-white:hover {
            background: #F0F0F0;
            border-color: #F0F0F0;
            color: var(--color-primary-deep);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 18px;
            border-radius: 6px;
        }

        .card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-sm);
        }

        .card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--color-primary);
        }

        .breadcrumb .separator {
            color: var(--color-divider);
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            font-size: 13px;
            font-weight: 500;
            background: var(--color-primary-light);
            color: var(--color-primary);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .tag:hover {
            background: var(--color-primary);
            color: var(--color-white);
        }

        .tag--accent {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }

        .tag--accent:hover {
            background: var(--color-accent);
            color: var(--color-white);
        }

        .tag--lg {
            padding: 8px 18px;
            font-size: 15px;
            border-radius: 4px;
        }

        .timeline {
            position: relative;
            padding-left: 40px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 16px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border);
            border-radius: 1px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 36px;
            padding-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 8px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-primary);
            border: 2px solid var(--color-white);
            box-shadow: 0 0 0 2px var(--color-primary);
            z-index: 1;
        }

        .timeline-item__date {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 6px;
            font-weight: 500;
        }

        .timeline-item__title {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .timeline-item__title a {
            color: var(--color-text);
            transition: color var(--transition-fast);
        }

        .timeline-item__title a:hover {
            color: var(--color-primary);
        }

        .timeline-item__excerpt {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0 0 10px;
        }

        .timeline-item__meta {
            display: flex;
            gap: 16px;
            font-size: 13px;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }

        .highlight-card {
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-sm);
        }

        .highlight-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .highlight-card__image {
            width: 100%;
            height: 220px;
            object-fit: cover;
            background: #EEEEEE;
        }

        .highlight-card__body {
            padding: 20px 24px;
        }

        .highlight-card__title {
            font-size: 20px;
            font-weight: 600;
            margin: 0 0 8px;
            color: var(--color-text);
            line-height: 1.4;
        }

        .highlight-card__excerpt {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin: 0 0 12px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .tag-cloud .tag {
            font-size: 14px;
            padding: 8px 16px;
            border-radius: 20px;
            background: var(--color-bg-gray);
            color: var(--color-text-secondary);
            border: 1px solid transparent;
            transition: all var(--transition-fast);
        }

        .tag-cloud .tag:hover {
            background: var(--color-primary-light);
            color: var(--color-primary);
            border-color: var(--color-primary);
        }

        .tag-cloud .tag--hot {
            background: var(--color-primary);
            color: var(--color-white);
            font-weight: 600;
        }

        .stat-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--color-white);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            transition: all var(--transition-smooth);
        }

        .stat-card__number {
            font-size: 48px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.1;
            margin-bottom: 8px;
        }

        .stat-card__label {
            font-size: 14px;
            color: var(--color-text-muted);
            font-weight: 400;
        }

        .faq-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border-light);
        }

        .faq-item__question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 20px 0;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 18px;
            font-weight: 500;
            color: var(--color-text);
            text-align: left;
            transition: color var(--transition-fast);
            gap: 16px;
        }

        .faq-item__question:hover {
            color: var(--color-primary);
        }

        .faq-item__icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid var(--color-divider);
            font-size: 16px;
            color: var(--color-text-muted);
            transition: all var(--transition-smooth);
        }

        .faq-item.active .faq-item__icon {
            transform: rotate(45deg);
            background: var(--color-primary);
            color: var(--color-white);
            border-color: var(--color-primary);
        }

        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 0;
        }

        .faq-item.active .faq-item__answer {
            max-height: 400px;
            padding: 0 0 20px;
        }

        .faq-item__answer p {
            margin: 0;
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text-secondary);
            background: #F9F9F9;
            padding: 16px 20px;
            border-radius: 6px;
        }

        .cta-box {
            background: var(--color-primary-subtle);
            border-radius: var(--radius-card);
            padding: 48px;
            text-align: center;
            border: 1px solid var(--color-primary-light);
        }

        .cta-box__title {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 12px;
        }

        .cta-box__desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin: 0 0 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-box__actions {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: none;
            border-bottom: 2px solid #CCCCCC;
            background: var(--color-white);
            font-size: 16px;
            color: var(--color-text);
            transition: border-color var(--transition-fast);
            border-radius: 0;
        }

        .form-input:focus {
            border-bottom-color: var(--color-primary);
        }

        .site-footer {
            background: var(--color-dark-bg);
            color: #AAAAAA;
            padding: 60px 0 30px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-white);
            margin-bottom: 10px;
        }

        .footer-slogan {
            color: #AAAAAA;
            font-size: 14px;
            margin: 0 0 8px;
            line-height: 1.6;
        }

        .footer-col__title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            color: #AAAAAA;
            font-size: 14px;
            margin-bottom: 10px;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--color-white);
        }

        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: #888;
        }

        .footer-bottom-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .footer-bottom-links a {
            color: #888;
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: var(--color-white);
        }

        .hero-group-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 12px;
            padding: 32px 28px;
            backdrop-filter: blur(4px);
            max-width: 420px;
        }

        .hero-group-card__title {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 8px;
        }

        .hero-group-card__progress {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
            font-size: 14px;
            color: #CCCCCC;
        }

        .hero-group-card__progress-bar {
            flex: 1;
            height: 6px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 3px;
            overflow: hidden;
        }

        .hero-group-card__progress-fill {
            height: 100%;
            background: var(--color-primary);
            border-radius: 3px;
            transition: width var(--transition-slow);
        }

        .hero-group-card__count {
            font-weight: 700;
            color: #fff;
            font-size: 16px;
        }

        .hero-group-card__actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        @media (max-width: 1024px) {
            .header-nav {
                gap: 24px;
            }
            .header-nav a {
                font-size: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .section {
                padding: var(--section-pad-tablet) 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .timeline {
                padding-left: 32px;
            }
            .timeline::before {
                left: 12px;
            }
            .timeline-item::before {
                left: -24px;
                width: 8px;
                height: 8px;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
            }
            .header-actions .header-cta-link {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .section {
                padding: var(--section-pad-mobile) 0;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom-links {
                justify-content: center;
            }
            .stat-card__number {
                font-size: 36px;
            }
            .timeline {
                padding-left: 28px;
            }
            .timeline::before {
                left: 10px;
            }
            .timeline-item::before {
                left: -20px;
                width: 7px;
                height: 7px;
            }
            .timeline-item__title {
                font-size: 17px;
            }
            .cta-box {
                padding: 32px 20px;
            }
            .hero-group-card {
                max-width: 100%;
            }
            .highlight-card__image {
                height: 180px;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .stat-card__number {
                font-size: 30px;
            }
            .btn-lg {
                padding: 14px 24px;
                font-size: 16px;
            }
            .timeline-item__title {
                font-size: 16px;
            }
            .highlight-card__image {
                height: 160px;
            }
            .cta-box__title {
                font-size: 20px;
            }
        }