/* roulang page: index */
:root {
            --color-primary: #C0392B;
            --color-primary-dark: #A93226;
            --color-secondary: #1A1A2E;
            --color-accent: #E67E22;
            --color-accent-dark: #D35400;
            --color-bg: #F7F4EE;
            --color-card: #FFFFFF;
            --color-border: #E5DED2;
            --color-success: #27AE60;
            --color-info: #2980B9;
            --color-purple: #8E44AD;
            --color-text: #444444;
            --color-text-dark: #2C3E50;
            --color-text-light: #999999;
            --color-text-white: #FFFFFF;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
            --shadow-md: 0 4px 16px rgba(192, 57, 43, 0.15);
            --shadow-lg: 0 8px 32px rgba(26, 26, 46, 0.12);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-xxl: 80px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.2s ease;
            --container-width: 1200px;
            --header-height: 72px;
        }

        *,
        *::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-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

        a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 2px;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
        }

        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--color-secondary);
            font-weight: 700;
            line-height: 1.35;
        }

        h1 {
            font-size: clamp(28px, 4vw, 36px);
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }

        h2 {
            font-size: clamp(22px, 3vw, 28px);
            font-weight: 600;
            margin-bottom: var(--spacing-md);
        }

        h3 {
            font-size: clamp(16px, 2vw, 18px);
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: var(--spacing-xs);
        }

        p {
            margin-bottom: var(--spacing-sm);
            color: var(--color-text);
        }

        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(26, 26, 46, 0.04);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            line-height: 1;
        }

        .logo-text {
            font-size: 21px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            height: 100%;
        }

        .main-nav a {
            display: flex;
            align-items: center;
            height: 100%;
            font-size: 15px;
            font-weight: 500;
            color: #333333;
            padding: 0 var(--spacing-xs);
            position: relative;
            white-space: nowrap;
            text-decoration: none;
            transition: color var(--transition);
        }

        .main-nav a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .main-nav a.active {
            color: var(--color-primary);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 100%;
            height: 3px;
            background: var(--color-primary);
            border-radius: 2px 2px 0 0;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: var(--spacing-xs);
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-secondary);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }

        /* ===== Mobile Nav Overlay ===== */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 999;
            background: rgba(26, 26, 46, 0.98);
            padding: var(--spacing-xl) var(--spacing-md);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: var(--spacing-md);
        }

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

        .mobile-nav-overlay a {
            color: #fff;
            font-size: 20px;
            font-weight: 500;
            padding: var(--spacing-xs) var(--spacing-sm);
            text-decoration: none;
            transition: color var(--transition);
        }

        .mobile-nav-overlay a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }

        .mobile-nav-overlay a.active {
            color: var(--color-accent);
        }

        .mobile-nav-close {
            position: absolute;
            top: var(--spacing-md);
            right: var(--spacing-md);
            background: none;
            border: none;
            color: #fff;
            font-size: 28px;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 520px;
            background: var(--color-secondary);
            background-image: linear-gradient(135deg, rgba(26, 26, 46, 0.88) 0%, rgba(26, 26, 46, 0.72) 50%, rgba(26, 26, 46, 0.9) 100%), url('/assets/images/b41fb4a97e3fc545.jpg');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            color: #fff;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: repeating-linear-gradient(45deg, transparent, transparent 40px, rgba(255, 255, 255, 0.03) 40px, rgba(255, 255, 255, 0.03) 41px);
            pointer-events: none;
        }

        .hero .container {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: var(--spacing-xl);
            align-items: center;
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
        }

        .hero-content {
            max-width: 640px;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(192, 57, 43, 0.25);
            border: 1px solid rgba(192, 57, 43, 0.5);
            color: #f5c6c0;
            font-size: 13px;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.5px;
        }

        .hero h1 {
            color: #fff;
            font-size: clamp(30px, 5vw, 40px);
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }

        .hero-subtitle {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.8;
            margin-bottom: var(--spacing-lg);
            max-width: 560px;
        }

        .hero-cta-group {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            border: none;
            text-decoration: none;
            transition: all var(--transition);
            line-height: 1.4;
            cursor: pointer;
            white-space: nowrap;
        }

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

        .btn-primary:hover {
            background: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(192, 57, 43, 0.4);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

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

        .btn-secondary:hover {
            background: var(--color-primary);
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(192, 57, 43, 0.3);
        }

        .btn-secondary:active {
            transform: translateY(0);
            box-shadow: none;
        }

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

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
            border-color: #fff;
        }

        .hero-scorecard {
            background: rgba(255, 255, 255, 0.95);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-lg);
            backdrop-filter: blur(12px);
        }

        .hero-scorecard-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-secondary);
            margin-bottom: var(--spacing-sm);
            padding-bottom: var(--spacing-xs);
            border-bottom: 1px solid var(--color-border);
        }

        .hero-match {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: var(--spacing-xs) 0;
            border-bottom: 1px solid var(--color-border);
        }

        .hero-match:last-child {
            border-bottom: none;
        }

        .hero-match-time {
            font-size: 12px;
            color: var(--color-text-light);
            min-width: 48px;
            text-align: center;
            font-weight: 500;
        }

        .hero-match-teams {
            flex: 1;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-secondary);
        }

        .hero-match-odds {
            font-size: 13px;
            color: var(--color-primary);
            font-weight: 700;
            background: rgba(192, 57, 43, 0.08);
            padding: 2px 8px;
            border-radius: 4px;
        }

        /* ===== Sections ===== */
        .section {
            padding: var(--spacing-xl) 0;
            background: var(--color-bg);
        }

        .section-alt {
            padding: var(--spacing-xl) 0;
            background: var(--color-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .section-dark {
            padding: var(--spacing-xl) 0;
            background: var(--color-secondary);
            color: rgba(255, 255, 255, 0.85);
        }

        .section-dark h2 {
            color: #fff;
        }

        .section-dark p {
            color: rgba(255, 255, 255, 0.75);
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: var(--spacing-lg);
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .section-header h2 {
            margin-bottom: 0;
        }

        .section-header .section-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
            text-decoration: none;
            white-space: nowrap;
        }

        .section-header .section-link:hover {
            text-decoration: underline;
            color: var(--color-primary-dark);
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-light);
            margin-top: -12px;
            margin-bottom: var(--spacing-lg);
            max-width: 720px;
        }

        /* ===== Grid & Cards ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }

        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

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

        .card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary);
            transform: translateY(-4px);
        }

        .card-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
            background: var(--color-border);
        }

        .card-body {
            padding: var(--spacing-md);
        }

        .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
            margin-bottom: var(--spacing-xs);
            letter-spacing: 0.3px;
        }

        .tag-primary {
            background: rgba(192, 57, 43, 0.1);
            color: var(--color-primary);
        }

        .tag-accent {
            background: rgba(230, 126, 34, 0.12);
            color: var(--color-accent-dark);
        }

        .tag-success {
            background: rgba(39, 174, 96, 0.12);
            color: var(--color-success);
        }

        .tag-info {
            background: rgba(41, 128, 185, 0.12);
            color: var(--color-info);
        }

        .tag-purple {
            background: rgba(142, 68, 173, 0.12);
            color: var(--color-purple);
        }

        .tag-gray {
            background: rgba(120, 120, 120, 0.12);
            color: #666;
        }

        .card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: var(--spacing-xs);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.5;
        }

        .card-excerpt {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: var(--spacing-sm);
        }

        .card-meta {
            font-size: 12px;
            color: var(--color-text-light);
            display: flex;
            gap: var(--spacing-sm);
            align-items: center;
        }

        /* ===== Stat Blocks ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
        }

        .stat-block {
            text-align: center;
            padding: var(--spacing-md);
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-accent);
            line-height: 1.2;
            display: block;
        }

        .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: var(--spacing-xs);
        }

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

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

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: var(--spacing-sm) 0;
            display: flex;
            gap: var(--spacing-sm);
            align-items: flex-start;
            cursor: pointer;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-secondary);
            transition: color var(--transition);
        }

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

        .faq-question .q-mark {
            font-weight: 700;
            color: var(--color-secondary);
            font-size: 16px;
            flex-shrink: 0;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding-left: 28px;
            font-size: 14px;
            color: #555555;
            line-height: 1.75;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: var(--spacing-sm);
        }

        .faq-answer .a-mark {
            font-weight: 600;
            color: #555;
            margin-right: 4px;
        }

        /* ===== Table ===== */
        .data-table-wrap {
            overflow-x: auto;
            background: var(--color-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
        }

        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            min-width: 720px;
        }

        .data-table th {
            background: var(--color-secondary);
            color: #fff;
            font-weight: 600;
            padding: 14px 16px;
            text-align: left;
            font-size: 13px;
            white-space: nowrap;
        }

        .data-table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--color-border);
            color: var(--color-text);
        }

        .data-table tr:last-child td {
            border-bottom: none;
        }

        .data-table tr:hover td {
            background: rgba(192, 57, 43, 0.03);
        }

        .win-mark {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-success);
            margin-right: 6px;
        }

        .lose-mark {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-primary);
            margin-right: 6px;
        }

        /* ===== Timeline ===== */
        .timeline {
            position: relative;
            padding-left: 32px;
            max-width: 800px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: var(--color-border);
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding-bottom: var(--spacing-md);
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -32px;
            top: 8px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--color-primary);
            border: 2px solid var(--color-bg);
            box-shadow: 0 0 0 2px var(--color-primary);
        }

        .timeline-time {
            font-size: 12px;
            color: var(--color-text-light);
            font-weight: 500;
            display: block;
            margin-bottom: 4px;
        }

        .timeline-text {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.7;
        }

        /* ===== Step List ===== */
        .step-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .step-item {
            display: flex;
            gap: var(--spacing-sm);
            align-items: flex-start;
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-sm) var(--spacing-md);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
        }

        .step-item:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }

        .step-number {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .step-content h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-secondary);
            margin-bottom: 4px;
        }

        .step-content p {
            font-size: 13px;
            color: var(--color-text-light);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ===== Review Cards ===== */
        .review-card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
            transition: all var(--transition);
        }

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

        .review-stars {
            color: var(--color-accent);
            font-size: 16px;
            letter-spacing: 2px;
        }

        .review-text {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.7;
        }

        .review-author {
            font-size: 12px;
            color: var(--color-text-light);
            font-weight: 500;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: var(--spacing-xl) 0;
            background: var(--color-primary);
            color: #fff;
            text-align: center;
        }

        .cta-section h2 {
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto var(--spacing-md);
            font-size: 15px;
        }

        .cta-section .btn-outline-light {
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
        }

        /* ===== Form ===== */
        .subscribe-section {
            padding: var(--spacing-lg) 0;
            background: var(--color-secondary);
            color: #fff;
        }

        .subscribe-section h2 {
            color: #fff;
            font-size: 22px;
            margin-bottom: var(--spacing-xs);
        }

        .subscribe-section p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            margin-bottom: var(--spacing-md);
            max-width: 480px;
        }

        .subscribe-form {
            display: flex;
            gap: var(--spacing-sm);
            max-width: 480px;
        }

        .subscribe-form input[type="email"] {
            flex: 1;
            padding: 12px 16px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 14px;
            transition: border-color var(--transition);
        }

        .subscribe-form input[type="email"]::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .subscribe-form input[type="email"]:focus {
            outline: none;
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.15);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-secondary);
            color: rgba(255, 255, 255, 0.75);
            padding: var(--spacing-xl) 0 var(--spacing-sm);
            flex-shrink: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            padding-bottom: var(--spacing-lg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .logo-text {
            color: #fff;
            margin-bottom: var(--spacing-sm);
            display: inline-block;
        }

        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.8;
            margin-top: var(--spacing-xs);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
        }

        .footer-col ul li {
            margin-bottom: var(--spacing-xs);
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            padding-top: var(--spacing-sm);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }

            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .hero .container {
                grid-template-columns: 1fr 320px;
                gap: var(--spacing-lg);
            }
        }

        @media (max-width: 991px) {
            .hero .container {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
                padding-top: var(--spacing-lg);
                padding-bottom: var(--spacing-lg);
            }

            .hero-scorecard {
                max-width: 420px;
            }

            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .main-nav {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }
        }

        @media (max-width: 767px) {
            :root {
                --header-height: 60px;
                --spacing-xl: 40px;
                --spacing-lg: 32px;
                --spacing-md: 20px;
            }

            h1 {
                font-size: 24px;
            }

            h2 {
                font-size: 20px;
            }

            .hero {
                min-height: 440px;
            }

            .hero h1 {
                font-size: 26px;
            }

            .hero-subtitle {
                font-size: 15px;
            }

            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }

            .hero-cta-group .btn {
                width: 100%;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }

            .stat-number {
                font-size: 28px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-xs);
            }

            .subscribe-form {
                flex-direction: column;
            }

            .subscribe-form .btn {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                gap: var(--spacing-sm);
            }

            .stats-grid {
                grid-template-columns: 1fr;
            }

            .card-body {
                padding: var(--spacing-sm);
            }

            .hero {
                min-height: 400px;
            }

            .section {
                padding: var(--spacing-lg) 0;
            }

            .section-alt {
                padding: var(--spacing-lg) 0;
            }

            .container {
                padding-left: var(--spacing-sm);
                padding-right: var(--spacing-sm);
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #C0392B;
            --color-primary-dark: #A93226;
            --color-secondary: #1A1A2E;
            --color-accent: #E67E22;
            --color-accent-dark: #D35400;
            --color-bg: #F7F4EE;
            --color-card: #FFFFFF;
            --color-border: #E5DED2;
            --color-success: #27AE60;
            --color-info: #2980B9;
            --color-purple: #8E44AD;
            --color-text: #444444;
            --color-text-dark: #2C3E50;
            --color-text-light: #999999;
            --color-text-white: #FFFFFF;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
            --shadow-md: 0 4px 16px rgba(192, 57, 43, 0.15);
            --shadow-lg: 0 8px 32px rgba(26, 26, 46, 0.12);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-xxl: 80px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.2s ease;
            --container-width: 1200px;
            --header-height: 72px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition), text-decoration var(--transition);
        }
        a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 2px;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
        }
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(26, 26, 46, 0.04);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            line-height: 1;
        }
        .logo-text {
            font-size: 21px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            height: 100%;
        }
        .main-nav a {
            display: flex;
            align-items: center;
            height: 100%;
            font-size: 15px;
            font-weight: 500;
            color: #333333;
            padding: 0 var(--spacing-xs);
            position: relative;
            white-space: nowrap;
            text-decoration: none;
            transition: color var(--transition);
        }
        .main-nav a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .main-nav a.active {
            color: var(--color-primary);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 100%;
            height: 3px;
            background: var(--color-primary);
            border-radius: 2px 2px 0 0;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: var(--spacing-xs);
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            z-index: 1100;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-secondary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(26, 26, 46, 0.6);
            z-index: 1050;
        }
        .mobile-nav-overlay.active {
            display: block;
        }
        .mobile-nav {
            position: fixed;
            top: 0;
            right: -320px;
            width: 280px;
            height: 100vh;
            background: var(--color-secondary);
            z-index: 1060;
            padding: var(--spacing-lg) var(--spacing-md);
            transition: right 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .mobile-nav.open {
            right: 0;
        }
        .mobile-nav .logo-text {
            color: #fff;
            margin-bottom: var(--spacing-lg);
            font-size: 20px;
        }
        .mobile-nav a {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            display: block;
            text-decoration: none;
            transition: color var(--transition);
        }
        .mobile-nav a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        .mobile-nav a.active {
            color: var(--color-accent);
        }
        .mobile-nav .mobile-close {
            align-self: flex-end;
            background: none;
            border: none;
            color: #fff;
            font-size: 28px;
            line-height: 1;
            padding: 4px 8px;
        }

        /* Breadcrumb */
        .breadcrumb-section {
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            padding: 14px 0;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--color-text-light);
        }
        .breadcrumb-nav a {
            color: var(--color-text-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        .breadcrumb-nav a:hover {
            color: var(--color-primary);
            text-decoration: underline;
        }
        .breadcrumb-nav .separator {
            color: var(--color-border);
            margin: 0 2px;
        }
        .breadcrumb-nav .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        /* Page Header */
        .page-header {
            padding: var(--spacing-xl) 0 var(--spacing-lg);
        }
        .page-header .container {
            display: flex;
            flex-wrap: wrap;
            align-items: flex-start;
            gap: var(--spacing-lg);
        }
        .page-header-content {
            flex: 1;
            min-width: 0;
        }
        .page-header h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-secondary);
            margin: 0 0 var(--spacing-md);
            line-height: 1.35;
        }
        .page-header-desc {
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.8;
            max-width: 860px;
        }
        .page-header-side {
            flex-shrink: 0;
            width: 280px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
        }
        .page-header-side h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-secondary);
            margin: 0 0 12px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--color-border);
        }
        .page-header-side ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .page-header-side ul li {
            font-size: 14px;
            color: var(--color-text);
            padding: 6px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .page-header-side ul li::before {
            content: '';
            width: 6px;
            height: 6px;
            background: var(--color-primary);
            border-radius: 50%;
            flex-shrink: 0;
        }

        /* Section common */
        .section {
            padding: var(--spacing-xl) 0;
        }
        .section-alt {
            background: var(--color-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .section-head {
            margin-bottom: var(--spacing-lg);
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-md);
        }
        .section-head h2 {
            font-size: 24px;
            font-weight: 600;
            color: var(--color-secondary);
            margin: 0;
            line-height: 1.4;
        }
        .section-head .section-sub {
            font-size: 14px;
            color: var(--color-text-light);
            margin-top: 4px;
        }

        /* Featured cards */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .featured-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            display: flex;
            flex-direction: column;
        }
        .featured-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary);
        }
        .featured-card-img {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .featured-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .featured-card:hover .featured-card-img img {
            transform: scale(1.04);
        }
        .featured-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-sm);
        }
        .featured-card-body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .featured-card-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-secondary);
            margin: 0 0 var(--spacing-xs);
            line-height: 1.5;
        }
        .featured-card-body p {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.7;
            margin: 0 0 var(--spacing-sm);
            flex: 1;
        }
        .featured-card-meta {
            font-size: 12px;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        /* Article grid */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .article-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary);
        }
        .article-card-img {
            position: relative;
            height: 160px;
            overflow: hidden;
            background: var(--color-secondary);
        }
        .article-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .article-card:hover .article-card-img img {
            transform: scale(1.04);
        }
        .article-card-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            background: var(--color-primary);
            color: #fff;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 8px;
            border-radius: var(--radius-sm);
        }
        .article-card-body {
            padding: var(--spacing-sm);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card-body h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0 0 6px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card-body p {
            font-size: 13px;
            color: var(--color-text-light);
            line-height: 1.6;
            margin: 0 0 var(--spacing-xs);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card-meta {
            font-size: 12px;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            padding-top: 8px;
            border-top: 1px solid var(--color-border);
        }

        /* View more link */
        .view-more {
            text-align: center;
            margin-top: var(--spacing-lg);
        }
        .btn {
            display: inline-block;
            font-family: inherit;
            font-weight: 500;
            border-radius: var(--radius-sm);
            padding: 12px 24px;
            font-size: 15px;
            line-height: 1;
            text-align: center;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition), color var(--transition);
            text-decoration: none;
            border: none;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 1px solid var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
        }

        /* Related categories */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: var(--spacing-sm);
        }
        .related-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            display: block;
            text-decoration: none;
        }
        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-primary);
            text-decoration: none;
        }
        .related-card .related-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 8px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }
        .related-card h3 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 16px 0;
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question .faq-q {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-secondary);
            flex-shrink: 0;
            line-height: 1.5;
        }
        .faq-question .faq-question-text {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-secondary);
            line-height: 1.5;
            flex: 1;
        }
        .faq-question .faq-arrow {
            font-size: 16px;
            color: var(--color-text-light);
            transition: transform var(--transition);
            flex-shrink: 0;
            line-height: 1.5;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            display: none;
            padding: 0 0 16px 28px;
            gap: 8px;
            align-items: flex-start;
        }
        .faq-item.open .faq-answer {
            display: flex;
        }
        .faq-answer .faq-a {
            font-size: 14px;
            font-weight: 600;
            color: #555;
            flex-shrink: 0;
            line-height: 1.6;
        }
        .faq-answer .faq-answer-text {
            font-size: 14px;
            color: #555;
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            background: var(--color-secondary);
            padding: var(--spacing-xl) 0;
        }
        .cta-section .container {
            text-align: center;
        }
        .cta-section h2 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            line-height: 1.4;
        }
        .cta-section p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
            margin: 0 0 var(--spacing-md);
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn-group {
            display: flex;
            gap: var(--spacing-sm);
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background: var(--color-secondary);
            color: rgba(255, 255, 255, 0.8);
            padding: var(--spacing-xl) 0 0;
            margin-top: auto;
        }
        .site-footer .container {
            padding-bottom: var(--spacing-lg);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
        }
        .footer-brand .logo-text {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: block;
            margin-bottom: var(--spacing-sm);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.7);
            margin: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: var(--spacing-md) 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .featured-grid,
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .related-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
                --spacing-xl: 40px;
                --spacing-lg: 32px;
                --spacing-md: 20px;
            }
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .featured-grid,
            .article-grid {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .page-header .container {
                flex-direction: column;
                gap: var(--spacing-md);
            }
            .page-header-side {
                width: 100%;
            }
            .page-header h1 {
                font-size: 24px;
            }
            .section-head h2 {
                font-size: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .featured-card-img {
                height: 160px;
            }
            .article-card-img {
                height: 140px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #C0392B;
            --color-primary-dark: #A93226;
            --color-secondary: #1A1A2E;
            --color-accent: #E67E22;
            --color-accent-dark: #D35400;
            --color-bg: #F7F4EE;
            --color-card: #FFFFFF;
            --color-border: #E5DED2;
            --color-success: #27AE60;
            --color-info: #2980B9;
            --color-purple: #8E44AD;
            --color-text: #444444;
            --color-text-dark: #2C3E50;
            --color-text-light: #999999;
            --color-text-white: #FFFFFF;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
            --shadow-md: 0 4px 16px rgba(192, 57, 43, 0.15);
            --shadow-lg: 0 8px 32px rgba(26, 26, 46, 0.12);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-xxl: 80px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.2s ease;
            --container-width: 1200px;
            --header-height: 72px;
        }

        * {
            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-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

        a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 2px;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
        }

        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(26, 26, 46, 0.04);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-shrink: 0;
            text-decoration: none;
        }

        .logo:hover {
            text-decoration: none;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            line-height: 1;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 21px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            height: 100%;
        }

        .main-nav a {
            display: flex;
            align-items: center;
            height: 100%;
            font-size: 15px;
            font-weight: 500;
            color: #333333;
            padding: 0 var(--spacing-xs);
            position: relative;
            white-space: nowrap;
            text-decoration: none;
            transition: color var(--transition);
        }

        .main-nav a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .main-nav a.active {
            color: var(--color-primary);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 100%;
            height: 3px;
            background: var(--color-primary);
            border-radius: 2px 2px 0 0;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: var(--spacing-xs);
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-secondary);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: var(--color-bg);
        }

        /* ===== 移动端导航抽屉 ===== */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(26, 26, 46, 0.6);
            z-index: 1001;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-nav-overlay.open {
            opacity: 1;
        }

        .mobile-nav-panel {
            position: fixed;
            top: 0;
            right: -300px;
            width: 280px;
            height: 100%;
            background: var(--color-secondary);
            z-index: 1002;
            padding: var(--spacing-lg) var(--spacing-md);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-lg);
            transition: right 0.3s ease;
            box-shadow: -8px 0 32px rgba(0, 0, 0, 0.3);
        }

        .mobile-nav-panel.open {
            right: 0;
        }

        .mobile-nav-panel .mobile-nav-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .mobile-nav-panel .mobile-nav-close {
            background: none;
            border: none;
            color: #fff;
            font-size: 28px;
            line-height: 1;
            padding: var(--spacing-xs);
            border-radius: var(--radius-sm);
        }

        .mobile-nav-panel .mobile-nav-close:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .mobile-nav-panel nav {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }

        .mobile-nav-panel nav a {
            color: rgba(255, 255, 255, 0.85);
            padding: var(--spacing-sm) var(--spacing-md);
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 500;
            text-decoration: none;
            transition: all var(--transition);
            display: block;
        }

        .mobile-nav-panel nav a:hover,
        .mobile-nav-panel nav a.active {
            color: #fff;
            background: var(--color-primary);
            text-decoration: none;
        }

        .mobile-nav-panel .mobile-nav-brand {
            color: var(--color-text-white);
            font-size: 18px;
            font-weight: 700;
        }

        .breadcrumb-wrapper {
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            padding: var(--spacing-sm) 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            font-size: 13px;
            color: var(--color-text-light);
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
        }

        .breadcrumb li+li::before {
            content: '/';
            color: var(--color-text-light);
            font-size: 12px;
        }

        .breadcrumb a {
            color: var(--color-text-light);
            text-decoration: none;
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

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

        /* ===== 分类页头部 ===== */
        .page-header {
            background: linear-gradient(135deg, #1A1A2E 0%, #2C3E50 55%, #1A1A2E 100%);
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            color: var(--color-text-white);
            position: relative;
            overflow: hidden;
        }

        .page-header::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(192, 57, 43, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-header::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -50px;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(230, 126, 34, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-header .container {
            position: relative;
            z-index: 1;
        }

        .page-header h1 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 var(--spacing-sm);
            letter-spacing: 1px;
        }

        .page-header .page-header-desc {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 720px;
            line-height: 1.8;
        }

        /* ===== Section 通用 ===== */
        .section {
            padding: var(--spacing-xl) 0;
        }

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

        .section-title {
            font-size: 24px;
            font-weight: 600;
            color: var(--color-secondary);
            margin-bottom: var(--spacing-xs);
            letter-spacing: 0.5px;
        }

        .section-subtitle {
            font-size: 14px;
            color: var(--color-text-light);
            margin-bottom: var(--spacing-md);
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: var(--spacing-md);
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .section-header .view-more {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            white-space: nowrap;
        }

        .section-header .view-more:hover {
            text-decoration: underline;
        }

        /* ===== 精选推荐 ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .featured-card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            display: flex;
            flex-direction: column;
        }

        .featured-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-primary);
        }

        .featured-card .card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #f0ebe0;
        }

        .featured-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .featured-card:hover .card-img img {
            transform: scale(1.05);
        }

        .featured-card .card-body {
            padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .featured-card .card-tag {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 100px;
            margin-bottom: var(--spacing-xs);
            align-self: flex-start;
            letter-spacing: 0.5px;
        }

        .featured-card .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: var(--spacing-xs);
            line-height: 1.5;
        }

        .featured-card .card-desc {
            font-size: 13px;
            color: var(--color-text-light);
            line-height: 1.6;
            margin-bottom: var(--spacing-sm);
            flex: 1;
        }

        .featured-card .card-meta {
            font-size: 12px;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            border-top: 1px solid var(--color-border);
            padding-top: var(--spacing-xs);
            margin-top: auto;
        }

        /* ===== 文章卡片列表 ===== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .article-card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-primary);
        }

        .article-card .card-img {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #f0ebe0;
        }

        .article-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .article-card:hover .card-img img {
            transform: scale(1.05);
        }

        .article-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-accent);
            color: #fff;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 100px;
            letter-spacing: 0.5px;
            z-index: 1;
        }

        .article-card .card-body {
            padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-card .card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: var(--spacing-xs);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card .card-desc {
            font-size: 13px;
            color: var(--color-text-light);
            line-height: 1.6;
            margin-bottom: var(--spacing-sm);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .article-card .card-meta {
            font-size: 12px;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            border-top: 1px solid var(--color-border);
            padding-top: var(--spacing-xs);
            margin-top: auto;
        }

        /* ===== 数据速览表格 ===== */
        .data-table-wrapper {
            background: var(--color-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            overflow: hidden;
        }

        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }

        .data-table thead {
            background: var(--color-secondary);
            color: #fff;
        }

        .data-table th {
            padding: var(--spacing-sm) var(--spacing-md);
            text-align: left;
            font-weight: 600;
            font-size: 13px;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .data-table td {
            padding: var(--spacing-sm) var(--spacing-md);
            border-bottom: 1px solid var(--color-border);
            color: var(--color-text);
            white-space: nowrap;
        }

        .data-table tbody tr:last-child td {
            border-bottom: none;
        }

        .data-table tbody tr:hover {
            background: rgba(192, 57, 43, 0.04);
        }

        .data-table .score-highlight {
            color: var(--color-primary);
            font-weight: 600;
        }

        .data-table .ratio-tag {
            display: inline-block;
            background: rgba(192, 57, 43, 0.1);
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 8px;
            border-radius: 100px;
        }

        /* ===== 相关分类入口 ===== */
        .category-links-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: var(--spacing-sm);
        }

        .category-link-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md) var(--spacing-sm);
            text-align: center;
            text-decoration: none;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: var(--spacing-xs);
        }

        .category-link-card:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-sm);
            text-decoration: none;
            transform: translateY(-2px);
        }

        .category-link-card .cat-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(192, 57, 43, 0.08);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            transition: all var(--transition);
        }

        .category-link-card:hover .cat-icon {
            background: var(--color-primary);
            color: #fff;
        }

        .category-link-card .cat-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-dark);
            white-space: nowrap;
        }

        .category-link-card .cat-desc {
            font-size: 11px;
            color: var(--color-text-light);
            line-height: 1.5;
        }

        /* ===== FAQ ===== */
        .faq-list {
            background: var(--color-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            overflow: hidden;
        }

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

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

        .faq-item:hover {
            background: rgba(192, 57, 43, 0.02);
        }

        .faq-question {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-sm);
            padding: var(--spacing-md);
            cursor: pointer;
            user-select: none;
            transition: background var(--transition);
        }

        .faq-question:hover {
            background: rgba(192, 57, 43, 0.04);
        }

        .faq-question .faq-q-mark {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-secondary);
            flex-shrink: 0;
            line-height: 1.6;
        }

        .faq-question .faq-q-text {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-dark);
            flex: 1;
            line-height: 1.6;
        }

        .faq-question .faq-toggle-icon {
            font-size: 18px;
            color: var(--color-text-light);
            flex-shrink: 0;
            transition: transform 0.3s ease;
            line-height: 1.6;
        }

        .faq-item.open .faq-toggle-icon {
            transform: rotate(45deg);
            color: var(--color-primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 var(--spacing-md);
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 var(--spacing-md) var(--spacing-md);
        }

        .faq-answer .faq-a-mark {
            font-size: 14px;
            font-weight: 600;
            color: #555;
            display: block;
            margin-bottom: var(--spacing-xs);
        }

        .faq-answer p {
            font-size: 14px;
            color: #555;
            line-height: 1.8;
            padding-left: 24px;
            margin: 0;
        }

        /* ===== CTA 引导 ===== */
        .cta-banner {
            background: linear-gradient(135deg, #1A1A2E 0%, #2C3E50 60%, #1A1A2E 100%);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg) var(--spacing-md);
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -30%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(192, 57, 43, 0.3) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-banner .container {
            position: relative;
            z-index: 1;
        }

        .cta-title {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }

        .cta-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto var(--spacing-md);
            line-height: 1.8;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: none;
            transition: all var(--transition);
            text-decoration: none;
            line-height: 1.4;
        }

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

        .btn-primary:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            text-decoration: none;
            color: #fff;
            box-shadow: 0 4px 12px rgba(192, 57, 43, 0.35);
        }

        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.6);
            color: #fff;
        }

        .btn-outline-light:hover {
            background: #fff;
            color: var(--color-secondary);
            text-decoration: none;
            transform: translateY(-2px);
        }

        .btn-accent {
            background: var(--color-accent);
            color: #fff;
        }

        .btn-accent:hover {
            background: var(--color-accent-dark);
            transform: translateY(-2px);
            text-decoration: none;
            color: #fff;
            box-shadow: 0 4px 12px rgba(230, 126, 34, 0.35);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-secondary);
            color: var(--color-text-white);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 20px;
            margin-bottom: var(--spacing-xs);
            display: inline-block;
        }

        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            margin-top: var(--spacing-xs);
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: var(--spacing-xs);
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
            text-decoration: none;
            transition: color var(--transition);
            display: inline-block;
        }

        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: underline;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: var(--spacing-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1199px) {
            .featured-grid,
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .category-links-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 991px) {
            .main-nav {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .mobile-nav-overlay {
                display: block;
                pointer-events: none;
            }

            .mobile-nav-overlay.open {
                pointer-events: auto;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            :root {
                --header-height: 60px;
                --spacing-xl: 40px;
                --spacing-lg: 32px;
                --spacing-md: 20px;
                --spacing-sm: 12px;
            }

            .page-header h1 {
                font-size: 26px;
            }

            .section-title {
                font-size: 20px;
            }
        }

        @media (max-width: 767px) {
            .featured-grid,
            .article-grid {
                grid-template-columns: 1fr;
            }

            .category-links-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-xs);
            }

            .section {
                padding: var(--spacing-lg) 0;
            }

            .page-header {
                padding: var(--spacing-lg) 0;
            }

            .page-header h1 {
                font-size: 22px;
            }

            .page-header .page-header-desc {
                font-size: 13px;
            }

            .data-table th,
            .data-table td {
                padding: var(--spacing-xs) var(--spacing-sm);
                font-size: 12px;
            }

            .section-header {
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-banner {
                padding: var(--spacing-lg) var(--spacing-sm);
            }

            .cta-title {
                font-size: 18px;
            }
        }

        @media (max-width: 520px) {
            .category-links-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-xs);
            }

            .category-link-card {
                padding: var(--spacing-sm);
            }

            .category-link-card .cat-name {
                font-size: 12px;
            }

            .category-link-card .cat-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .category-link-card .cat-desc {
                display: none;
            }

            .data-table {
                font-size: 11px;
            }

            .data-table th,
            .data-table td {
                padding: 6px var(--spacing-xs);
            }

            .data-table .ratio-tag {
                font-size: 10px;
                padding: 1px 6px;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #C0392B;
            --color-primary-dark: #A93226;
            --color-secondary: #1A1A2E;
            --color-accent: #E67E22;
            --color-accent-dark: #D35400;
            --color-bg: #F7F4EE;
            --color-card: #FFFFFF;
            --color-border: #E5DED2;
            --color-success: #27AE60;
            --color-info: #2980B9;
            --color-purple: #8E44AD;
            --color-text: #444444;
            --color-text-dark: #2C3E50;
            --color-text-light: #999999;
            --color-text-white: #FFFFFF;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
            --shadow-md: 0 4px 16px rgba(192, 57, 43, 0.15);
            --shadow-lg: 0 8px 32px rgba(26, 26, 46, 0.12);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-xxl: 80px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.2s ease;
            --container-width: 1200px;
            --header-height: 72px;
        }

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

        a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 2px;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
        }

        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(26, 26, 46, 0.04);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            line-height: 1;
        }

        .logo-text {
            font-size: 21px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            height: 100%;
        }

        .main-nav a {
            display: flex;
            align-items: center;
            height: 100%;
            font-size: 15px;
            font-weight: 500;
            color: #333333;
            padding: 0 var(--spacing-xs);
            position: relative;
            white-space: nowrap;
            text-decoration: none;
            transition: color var(--transition);
        }

        .main-nav a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .main-nav a.active {
            color: var(--color-primary);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 100%;
            height: 3px;
            background: var(--color-primary);
            border-radius: 2px 2px 0 0;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: var(--spacing-xs);
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-secondary);
            border-radius: 2px;
            transition: all var(--transition);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            background: transparent;
            padding: var(--spacing-sm) 0;
            margin-bottom: 0;
        }

        .breadcrumb-wrap .breadcrumb {
            margin: 0;
            padding: 0;
            font-size: 13px;
            color: var(--color-text-light);
            list-style: none;
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
        }

        .breadcrumb-wrap .breadcrumb li {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
        }

        .breadcrumb-wrap .breadcrumb li+li::before {
            content: '>';
            color: var(--color-text-light);
            font-size: 12px;
        }

        .breadcrumb-wrap .breadcrumb a {
            color: var(--color-primary);
            text-decoration: none;
            font-weight: 500;
        }

        .breadcrumb-wrap .breadcrumb a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }

        .breadcrumb-wrap .breadcrumb .current {
            color: var(--color-text-light);
        }

        /* ===== Page Title / Intro ===== */
        .page-title-section {
            background: linear-gradient(135deg, var(--color-secondary) 0%, #2C3E50 100%);
            padding: var(--spacing-xl) 0;
            position: relative;
            overflow: hidden;
            margin-bottom: var(--spacing-xl);
        }

        .page-title-section::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(192, 57, 43, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-title-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: 20%;
            width: 500px;
            height: 120px;
            background: rgba(230, 126, 34, 0.12);
            transform: rotate(-3deg);
            pointer-events: none;
        }

        .page-title-section .container {
            position: relative;
            z-index: 1;
        }

        .page-title-section h1 {
            color: var(--color-text-white);
            font-size: 32px;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }

        .page-title-section .title-tag {
            display: inline-block;
            background: var(--color-primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }

        .page-title-section .intro-text {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            max-width: 720px;
            line-height: 1.8;
        }

        /* ===== Data Strip ===== */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-xl);
        }

        .data-strip-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .data-strip-item .data-value {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
        }

        .data-strip-item .data-label {
            font-size: 13px;
            color: var(--color-text-light);
            margin-top: var(--spacing-xs);
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: var(--spacing-xl) 0;
        }

        .section-block.alt-bg {
            background: var(--color-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .section-title {
            font-size: 24px;
            font-weight: 600;
            color: var(--color-secondary);
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.3px;
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .section-title::before {
            content: '';
            width: 4px;
            height: 24px;
            background: var(--color-primary);
            border-radius: 2px;
        }

        .section-desc {
            font-size: 14px;
            color: var(--color-text-light);
            margin-bottom: var(--spacing-lg);
            max-width: 640px;
        }

        /* ===== Article Cards ===== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .article-card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary);
            transform: translateY(-4px);
        }

        .article-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            position: relative;
        }

        .article-card .card-body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-card .card-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 12px;
            margin-bottom: var(--spacing-xs);
            letter-spacing: 0.5px;
            width: fit-content;
        }

        .tag-info {
            background: rgba(41, 128, 185, 0.1);
            color: var(--color-info);
        }

        .article-card .card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: var(--spacing-xs);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card .card-excerpt {
            font-size: 13px;
            color: var(--color-text-light);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: var(--spacing-sm);
            flex: 1;
        }

        .article-card .card-meta {
            font-size: 12px;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: var(--spacing-xs);
            border-top: 1px solid var(--color-border);
        }

        /* ===== Featured Cards ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .featured-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: all var(--transition);
            position: relative;
        }

        .featured-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-accent);
        }

        .featured-card .featured-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .featured-card .featured-body {
            padding: var(--spacing-md);
        }

        .featured-card .featured-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 4px;
            letter-spacing: 0.5px;
        }

        .featured-card .featured-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: var(--spacing-xs);
            line-height: 1.5;
        }

        .featured-card .featured-excerpt {
            font-size: 13px;
            color: var(--color-text-light);
            line-height: 1.7;
        }

        /* ===== Process Steps ===== */
        .process-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            counter-reset: step;
        }

        .process-item {
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg) var(--spacing-md);
            border: 1px solid var(--color-border);
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
        }

        .process-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary);
        }

        .process-item .step-num {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            margin: 0 auto var(--spacing-sm);
        }

        .process-item .step-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: var(--spacing-xs);
        }

        .process-item .step-desc {
            font-size: 13px;
            color: var(--color-text-light);
            line-height: 1.7;
        }

        /* ===== Related Categories ===== */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: var(--spacing-sm);
        }

        .related-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            text-decoration: none;
            display: block;
        }

        .related-card:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            text-decoration: none;
        }

        .related-card .related-icon {
            font-size: 24px;
            margin-bottom: var(--spacing-xs);
        }

        .related-card .related-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-dark);
        }

        .related-card .related-desc {
            font-size: 12px;
            color: var(--color-text-light);
            margin-top: var(--spacing-xs);
            line-height: 1.6;
        }

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

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

        .faq-question {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-sm);
            cursor: pointer;
            padding: var(--spacing-xs) 0;
            transition: color var(--transition);
            user-select: none;
        }

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

        .faq-question .faq-q {
            font-weight: 700;
            font-size: 16px;
            color: var(--color-secondary);
            flex-shrink: 0;
        }

        .faq-question .faq-question-text {
            font-weight: 600;
            font-size: 15px;
            color: var(--color-text-dark);
            line-height: 1.6;
        }

        .faq-answer {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-sm);
            padding: var(--spacing-xs) 0 var(--spacing-xs) calc(var(--spacing-sm) + 16px);
        }

        .faq-answer .faq-a {
            font-weight: 400;
            font-size: 14px;
            color: #555;
            flex-shrink: 0;
        }

        .faq-answer .faq-answer-text {
            font-size: 14px;
            color: #555;
            line-height: 1.8;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-secondary) 0%, #3D3D5C 100%);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl) var(--spacing-lg);
            text-align: center;
            margin: var(--spacing-xl) 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(230, 126, 34, 0.3) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section h2 {
            color: var(--color-text-white);
            font-size: 26px;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 14px;
            margin-bottom: var(--spacing-md);
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: none;
            transition: all var(--transition);
            letter-spacing: 0.3px;
        }

        .btn-primary-custom {
            background: var(--color-primary);
            color: #fff;
        }

        .btn-primary-custom:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(192, 57, 43, 0.3);
            color: #fff;
            text-decoration: none;
        }

        .btn-outline-light-custom {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.6);
            color: #fff;
        }

        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
            text-decoration: none;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-secondary);
            color: rgba(255, 255, 255, 0.8);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: auto;
        }

        .site-footer .container {
            display: flex;
            flex-direction: column;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: var(--spacing-lg);
            padding-bottom: var(--spacing-lg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .logo-text {
            display: block;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }

        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: var(--spacing-xs);
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13px;
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: var(--spacing-md);
            flex-wrap: wrap;
            gap: var(--spacing-xs);
        }

        .footer-bottom span {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Mobile Nav Overlay ===== */
        @media (max-width: 991px) {
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--color-secondary);
                flex-direction: column;
                justify-content: flex-start;
                padding: var(--spacing-xl) var(--spacing-md);
                gap: var(--spacing-lg);
                transform: translateX(100%);
                transition: transform 0.3s ease;
                height: calc(100vh - var(--header-height));
                overflow-y: auto;
                z-index: 999;
            }

            .main-nav.open {
                transform: translateX(0);
            }

            .main-nav a {
                font-size: 18px;
                color: #fff;
                height: auto;
                padding: var(--spacing-xs) 0;
                width: 100%;
                display: flex;
                align-items: center;
                justify-content: flex-start;
            }

            .main-nav a:hover {
                color: var(--color-accent);
            }

            .main-nav a.active {
                color: var(--color-accent);
            }

            .main-nav a.active::after {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-toggle.open span:nth-child(1) {
                transform: translateY(7px) rotate(45deg);
            }

            .nav-toggle.open span:nth-child(2) {
                opacity: 0;
            }

            .nav-toggle.open span:nth-child(3) {
                transform: translateY(-7px) rotate(-45deg);
            }
        }

        @media (max-width: 992px) {
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .process-list {
                grid-template-columns: repeat(2, 1fr);
            }

            .related-grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .data-strip {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }

            .footer-brand {
                grid-column: 1 / -1;
            }

            .page-title-section h1 {
                font-size: 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
                --spacing-xl: 40px;
                --spacing-lg: 32px;
                --spacing-md: 20px;
            }

            .article-grid {
                grid-template-columns: 1fr;
            }

            .featured-grid {
                grid-template-columns: 1fr;
            }

            .process-list {
                grid-template-columns: 1fr;
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-xs);
            }

            .page-title-section h1 {
                font-size: 24px;
            }

            .page-title-section {
                padding: var(--spacing-lg) 0;
            }

            .section-title {
                font-size: 20px;
            }

            .article-card .card-img {
                height: 180px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-xs);
            }

            .cta-section {
                padding: var(--spacing-lg) var(--spacing-md);
            }

            .cta-section h2 {
                font-size: 22px;
            }
        }

        @media (max-width: 520px) {
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-xs);
            }

            .data-strip-item .data-value {
                font-size: 22px;
            }

            .related-grid {
                grid-template-columns: 1fr;
            }

            .breadcrumb-wrap {
                font-size: 12px;
            }

            .page-title-section h1 {
                font-size: 22px;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #C0392B;
            --color-primary-dark: #A93226;
            --color-secondary: #1A1A2E;
            --color-accent: #E67E22;
            --color-accent-dark: #D35400;
            --color-bg: #F7F4EE;
            --color-card: #FFFFFF;
            --color-border: #E5DED2;
            --color-success: #27AE60;
            --color-info: #2980B9;
            --color-purple: #8E44AD;
            --color-text: #444444;
            --color-text-dark: #2C3E50;
            --color-text-light: #999999;
            --color-text-white: #FFFFFF;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
            --shadow-md: 0 4px 16px rgba(192, 57, 43, 0.15);
            --shadow-lg: 0 8px 32px rgba(26, 26, 46, 0.12);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-xxl: 80px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.2s ease;
            --container-width: 1200px;
            --header-height: 72px;
        }
        *,
        *::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-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition), text-decoration var(--transition);
        }
        a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 2px;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
        }
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }
        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(26, 26, 46, 0.04);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-shrink: 0;
            text-decoration: none;
        }
        .logo:hover {
            text-decoration: none;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            line-height: 1;
        }
        .logo-text {
            font-size: 21px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            height: 100%;
        }
        .main-nav a {
            display: flex;
            align-items: center;
            height: 100%;
            font-size: 15px;
            font-weight: 500;
            color: #333333;
            padding: 0 var(--spacing-xs);
            position: relative;
            white-space: nowrap;
            text-decoration: none;
            transition: color var(--transition);
        }
        .main-nav a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .main-nav a.active {
            color: var(--color-primary);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 100%;
            height: 3px;
            background: var(--color-primary);
            border-radius: 2px 2px 0 0;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: var(--spacing-xs);
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-secondary);
            border-radius: 1px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        /* ===== Breadcrumb ===== */
        .breadcrumb-bar {
            background: var(--color-bg);
            border-bottom: 1px solid var(--color-border);
            padding: var(--spacing-sm) 0;
        }
        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--color-text-light);
        }
        .breadcrumb-bar a {
            color: var(--color-text-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        .breadcrumb-bar a:hover {
            color: var(--color-primary);
            text-decoration: underline;
        }
        .breadcrumb-bar .separator {
            color: #ccc;
            user-select: none;
        }
        .breadcrumb-bar .current {
            color: var(--color-primary);
            font-weight: 500;
        }
        /* ===== Section Base ===== */
        .section {
            padding: var(--spacing-xl) 0;
        }
        .section-alt {
            background: var(--color-card);
        }
        .section-dark {
            background: var(--color-secondary);
            color: rgba(255, 255, 255, 0.85);
        }
        .section-title {
            font-size: 26px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: var(--spacing-xs);
            line-height: 1.4;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-light);
            margin-bottom: var(--spacing-lg);
            line-height: 1.7;
        }
        .section-title-center {
            text-align: center;
        }
        .section-title-center .section-subtitle {
            text-align: center;
        }
        /* ===== Category Intro ===== */
        .category-intro {
            padding: var(--spacing-lg) 0 var(--spacing-md);
        }
        .category-intro h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
        }
        .category-intro .intro-text {
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.85;
            max-width: 860px;
            background: var(--color-card);
            border-left: 3px solid var(--color-success);
            padding: var(--spacing-md) var(--spacing-lg);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            box-shadow: var(--shadow-sm);
        }
        /* ===== Featured Cards ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
        }
        .featured-card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }
        .featured-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-success);
        }
        .featured-card .card-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .featured-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .featured-card:hover .card-cover img {
            transform: scale(1.05);
        }
        .featured-card .card-badge {
            position: absolute;
            top: var(--spacing-sm);
            left: var(--spacing-sm);
            background: var(--color-success);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.5px;
        }
        .featured-card .card-body {
            padding: var(--spacing-md);
        }
        .featured-card .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: var(--spacing-xs);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .featured-card .card-summary {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.7;
            margin-bottom: var(--spacing-sm);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .featured-card .card-meta {
            font-size: 12px;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
        }
        /* ===== Article Grid ===== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
        }
        .article-card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }
        .article-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-success);
        }
        .article-card .card-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--color-bg);
        }
        .article-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .article-card:hover .card-cover img {
            transform: scale(1.05);
        }
        .article-card .card-badge {
            position: absolute;
            top: var(--spacing-sm);
            left: var(--spacing-sm);
            background: var(--color-success);
            color: #fff;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.4px;
        }
        .article-card .card-body {
            padding: var(--spacing-md);
        }
        .article-card .card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: var(--spacing-xs);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card .card-summary {
            font-size: 13px;
            color: var(--color-text);
            line-height: 1.7;
            margin-bottom: var(--spacing-sm);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card .card-meta {
            font-size: 12px;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
        }
        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
        }
        .stat-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg) var(--spacing-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-success);
        }
        .stat-number {
            font-size: 38px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 14px;
            color: var(--color-text-light);
            margin-top: var(--spacing-xs);
            line-height: 1.5;
        }
        /* ===== Method Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
        }
        .step-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg) var(--spacing-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-success);
        }
        .step-number {
            display: inline-block;
            width: 36px;
            height: 36px;
            background: var(--color-success);
            color: #fff;
            border-radius: 50%;
            font-weight: 700;
            font-size: 16px;
            line-height: 36px;
            margin-bottom: var(--spacing-sm);
        }
        .step-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: var(--spacing-xs);
        }
        .step-desc {
            font-size: 13px;
            color: var(--color-text);
            line-height: 1.7;
        }
        /* ===== Related Categories ===== */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
        }
        .related-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg) var(--spacing-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            display: block;
            text-decoration: none;
        }
        .related-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary);
            text-decoration: none;
        }
        .related-card .related-icon {
            font-size: 32px;
            margin-bottom: var(--spacing-sm);
            display: block;
        }
        .related-card .related-name {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-dark);
        }
        .related-card .related-desc {
            font-size: 13px;
            color: var(--color-text-light);
            margin-top: var(--spacing-xs);
            line-height: 1.6;
        }
        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: var(--spacing-md) auto 0;
        }
        .faq-item {
            border-bottom: 1px solid var(--color-border);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--color-border);
        }
        .faq-question {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-sm);
            padding: var(--spacing-md) var(--spacing-sm);
            cursor: pointer;
            transition: background var(--transition);
            user-select: none;
            width: 100%;
            background: none;
            border: none;
            text-align: left;
        }
        .faq-question:hover {
            background: rgba(192, 57, 43, 0.03);
        }
        .faq-q-mark {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-secondary);
            flex-shrink: 0;
            line-height: 1.6;
        }
        .faq-question-text {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-dark);
            line-height: 1.6;
            flex: 1;
        }
        .faq-toggle-icon {
            font-size: 18px;
            color: var(--color-text-light);
            flex-shrink: 0;
            transition: transform 0.3s ease;
            line-height: 1.6;
        }
        .faq-item.open .faq-toggle-icon {
            transform: rotate(45deg);
            color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 var(--spacing-sm);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 var(--spacing-sm) var(--spacing-md);
        }
        .faq-answer-inner {
            display: flex;
            gap: var(--spacing-sm);
            align-items: flex-start;
        }
        .faq-a-mark {
            font-size: 14px;
            font-weight: 400;
            color: #555;
            flex-shrink: 0;
            line-height: 1.7;
        }
        .faq-answer-text {
            font-size: 14px;
            color: #555;
            line-height: 1.75;
            flex: 1;
        }
        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--color-secondary);
            padding: var(--spacing-xl) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/b41fb4a97e3fc545.jpg') center/cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            line-height: 1.4;
        }
        .cta-section p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 620px;
            margin: 0 auto var(--spacing-lg);
            line-height: 1.8;
        }
        .cta-buttons {
            display: flex;
            gap: var(--spacing-sm);
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary-custom {
            background: var(--color-accent);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
            display: inline-block;
            text-decoration: none;
            letter-spacing: 0.5px;
        }
        .btn-primary-custom:hover {
            background: var(--color-accent-dark);
            transform: translateY(-2px);
            color: #fff;
            text-decoration: none;
        }
        .btn-secondary-custom {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.5);
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: background var(--transition), border-color var(--transition), transform var(--transition);
            display: inline-block;
            text-decoration: none;
            letter-spacing: 0.5px;
        }
        .btn-secondary-custom:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
            color: #fff;
            text-decoration: none;
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-secondary);
            color: rgba(255, 255, 255, 0.8);
            padding-top: var(--spacing-xl);
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            padding-bottom: var(--spacing-lg);
        }
        .footer-brand .logo-text {
            color: #fff;
            font-size: 22px;
            display: inline-block;
            margin-bottom: var(--spacing-sm);
        }
        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: var(--spacing-xs);
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13px;
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: var(--spacing-md) 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }
        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
                --spacing-xl: 40px;
                --spacing-lg: 32px;
                --spacing-md: 20px;
                --spacing-sm: 12px;
            }
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--color-secondary);
                flex-direction: column;
                align-items: flex-start;
                padding: var(--spacing-lg);
                gap: 0;
                transform: translateX(-100%);
                transition: transform 0.3s ease;
                z-index: 999;
                overflow-y: auto;
                height: calc(100vh - var(--header-height));
            }
            .main-nav.open {
                transform: translateX(0);
            }
            .main-nav a {
                height: auto;
                padding: var(--spacing-sm) 0;
                font-size: 17px;
                color: rgba(255, 255, 255, 0.85);
                width: 100%;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            }
            .main-nav a:hover {
                color: #fff;
                text-decoration: none;
            }
            .main-nav a.active {
                color: var(--color-accent);
            }
            .main-nav a.active::after {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .category-intro h1 {
                font-size: 26px;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
            .section-title {
                font-size: 22px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: var(--spacing-sm);
                padding-right: var(--spacing-sm);
            }
            .category-intro h1 {
                font-size: 22px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .featured-card .card-title {
                font-size: 16px;
            }
            .article-card .card-title {
                font-size: 15px;
            }
            .stat-number {
                font-size: 30px;
            }
            .btn-primary-custom,
            .btn-secondary-custom {
                width: 100%;
                text-align: center;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #C0392B;
            --color-primary-dark: #A93226;
            --color-secondary: #1A1A2E;
            --color-accent: #E67E22;
            --color-accent-dark: #D35400;
            --color-bg: #F7F4EE;
            --color-card: #FFFFFF;
            --color-border: #E5DED2;
            --color-success: #27AE60;
            --color-info: #2980B9;
            --color-purple: #8E44AD;
            --color-text: #444444;
            --color-text-dark: #2C3E50;
            --color-text-light: #999999;
            --color-text-white: #FFFFFF;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
            --shadow-md: 0 4px 16px rgba(192, 57, 43, 0.15);
            --shadow-lg: 0 8px 32px rgba(26, 26, 46, 0.12);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-xxl: 80px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.2s ease;
            --container-width: 1200px;
            --header-height: 72px;
        }

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

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
            margin: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

        a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 2px;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
        }

        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(26, 26, 46, 0.04);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-shrink: 0;
            text-decoration: none;
        }

        .logo:hover {
            text-decoration: none;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            line-height: 1;
        }

        .logo-text {
            font-size: 21px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            height: 100%;
        }

        .main-nav a {
            display: flex;
            align-items: center;
            height: 100%;
            font-size: 15px;
            font-weight: 500;
            color: #333333;
            padding: 0 var(--spacing-xs);
            position: relative;
            white-space: nowrap;
            text-decoration: none;
            transition: color var(--transition);
        }

        .main-nav a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .main-nav a.active {
            color: var(--color-primary);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 100%;
            height: 3px;
            background: var(--color-primary);
            border-radius: 2px 2px 0 0;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: var(--spacing-xs);
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
        }

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

        /* Mobile nav */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(26, 26, 46, 0.65);
            z-index: 999;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-nav-overlay.show {
            display: block;
            opacity: 1;
        }

        .mobile-nav-panel {
            position: fixed;
            top: 0;
            right: -100%;
            width: 80%;
            max-width: 320px;
            height: 100%;
            background: var(--color-secondary);
            z-index: 1001;
            padding: var(--spacing-lg) var(--spacing-md);
            transition: right 0.3s ease;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .mobile-nav-panel.show {
            right: 0;
        }

        .mobile-nav-panel a {
            color: var(--color-text-white);
            font-size: 18px;
            font-weight: 500;
            padding: var(--spacing-xs) 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            text-decoration: none;
            transition: color var(--transition);
        }

        .mobile-nav-panel a:hover {
            color: var(--color-accent);
        }

        .mobile-nav-close {
            align-self: flex-end;
            background: none;
            border: none;
            color: var(--color-text-white);
            font-size: 26px;
            line-height: 1;
            padding: var(--spacing-xs);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: var(--spacing-sm) 0;
            background: transparent;
            border-bottom: 1px solid var(--color-border);
        }

        .breadcrumb-section .container {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--color-text-light);
        }

        .breadcrumb-section a {
            color: var(--color-text-light);
            text-decoration: none;
            transition: color var(--transition);
        }

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

        .breadcrumb-section .separator {
            color: #ccc;
            user-select: none;
        }

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

        /* Page header */
        .page-header {
            padding: var(--spacing-lg) 0 var(--spacing-md);
            background: linear-gradient(180deg, #fff 0%, var(--color-bg) 100%);
            border-bottom: 1px solid var(--color-border);
        }

        .page-header h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-secondary);
            margin: 0 0 var(--spacing-xs) 0;
            line-height: 1.35;
        }

        .page-header .subtitle {
            font-size: 16px;
            color: var(--color-text);
            max-width: 720px;
            margin: 0;
            line-height: 1.75;
        }

        /* Section base */
        .section {
            padding: var(--spacing-xl) 0;
        }

        .section-alt {
            background: var(--color-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .section-title {
            font-size: 24px;
            font-weight: 600;
            color: var(--color-secondary);
            margin: 0 0 var(--spacing-md) 0;
            line-height: 1.4;
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
        }

        .section-title::before {
            content: '';
            display: inline-block;
            width: 4px;
            height: 22px;
            background: var(--color-primary);
            border-radius: 2px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-light);
            margin: -8px 0 var(--spacing-md) 0;
        }

        /* Cards */
        .card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
            overflow: hidden;
            height: 100%;
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary);
            transform: translateY(-3px);
        }

        .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background: linear-gradient(135deg, #1A1A2E 0%, #2C3E50 100%);
        }

        .card-body {
            padding: var(--spacing-md);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
            flex: 1;
        }

        .card-tag {
            display: inline-block;
            background: var(--color-primary);
            color: #fff;
            font-size: 12px;
            font-weight: 500;
            padding: 2px 10px;
            border-radius: 20px;
            align-self: flex-start;
            letter-spacing: 0.5px;
        }

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

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

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

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

        .card-tag.tag-gray {
            background: #7f8c8d;
        }

        .card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-text {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.7;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            font-size: 12px;
            color: var(--color-text-light);
            margin-top: auto;
            padding-top: var(--spacing-xs);
            border-top: 1px solid var(--color-border);
        }

        /* Grid */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }

        /* Buttons */
        .btn {
            display: inline-block;
            border-radius: var(--radius-sm);
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.2;
            text-align: center;
            transition: background var(--transition), color var(--transition), transform var(--transition), border-color var(--transition), box-shadow var(--transition);
            text-decoration: none;
            border: 1px solid transparent;
            cursor: pointer;
        }

        .btn:hover {
            text-decoration: none;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

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

        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-accent {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
        }

        .btn-accent:hover {
            background: var(--color-accent-dark);
            border-color: var(--color-accent-dark);
            color: #fff;
            transform: translateY(-2px);
        }

        /* Steps */
        .steps-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .steps-list li {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-sm);
            padding: var(--spacing-sm) var(--spacing-md);
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .steps-list li:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-md);
        }

        .step-number {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
    }

        .step-content h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin: 0 0 4px 0;
        }

        .step-content p {
            font-size: 14px;
            color: var(--color-text);
            margin: 0;
            line-height: 1.7;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .faq-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .faq-item:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-xs);
            font-size: 16px;
            font-weight: 600;
            color: var(--color-secondary);
            margin: 0 0 var(--spacing-xs) 0;
            line-height: 1.5;
        }

        .faq-question .q-mark {
            flex-shrink: 0;
            color: var(--color-primary);
            font-weight: 700;
        }

        .faq-answer {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-xs);
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.75;
            margin: 0;
        }

        .faq-answer .a-mark {
            flex-shrink: 0;
            color: var(--color-text-light);
            font-weight: 600;
        }

        /* Related category entries */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: var(--spacing-sm);
        }

        .related-card {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            padding: var(--spacing-md) var(--spacing-sm);
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
            text-decoration: none;
            color: var(--color-text);
        }

        .related-card:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            text-decoration: none;
            color: var(--color-text);
        }

        .related-card .rel-icon {
            font-size: 28px;
            margin-bottom: var(--spacing-xs);
        }

        .related-card .rel-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-dark);
        }

        .related-card .rel-desc {
            font-size: 12px;
            color: var(--color-text-light);
            margin-top: 4px;
        }

        /* CTA section */
        .cta-section {
            background: var(--color-secondary);
            color: var(--color-text-white);
            padding: var(--spacing-xl) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at center, rgba(192, 57, 43, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 26px;
            font-weight: 700;
            margin: 0 0 var(--spacing-sm) 0;
            color: #fff;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto var(--spacing-md);
        }

        .cta-section .btn {
            display: inline-block;
            margin: var(--spacing-xs);
        }

        /* Footer */
        .site-footer {
            background: var(--color-secondary);
            color: var(--color-text-white);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.75;
            margin-top: var(--spacing-sm);
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 var(--spacing-sm) 0;
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-col ul li span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: var(--spacing-md);
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .related-grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
                --spacing-xl: 40px;
                --spacing-lg: 32px;
                --spacing-md: 20px;
            }

            .main-nav {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .page-header h1 {
                font-size: 24px;
            }

            .grid-3 {
                grid-template-columns: 1fr;
            }

            .grid-2 {
                grid-template-columns: 1fr;
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .section {
                padding: var(--spacing-lg) 0;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .related-grid {
                grid-template-columns: 1fr;
            }

            .page-header h1 {
                font-size: 22px;
            }

            .section-title {
                font-size: 20px;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #C0392B;
            --color-primary-dark: #A93226;
            --color-secondary: #1A1A2E;
            --color-accent: #E67E22;
            --color-accent-dark: #D35400;
            --color-bg: #F7F4EE;
            --color-card: #FFFFFF;
            --color-border: #E5DED2;
            --color-success: #27AE60;
            --color-info: #2980B9;
            --color-purple: #8E44AD;
            --color-text: #444444;
            --color-text-dark: #2C3E50;
            --color-text-light: #999999;
            --color-text-white: #FFFFFF;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
            --shadow-md: 0 4px 16px rgba(192, 57, 43, 0.15);
            --shadow-lg: 0 8px 32px rgba(26, 26, 46, 0.12);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 60px;
            --spacing-xxl: 80px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --transition: 0.2s ease;
            --container-width: 1200px;
            --header-height: 72px;
        }

        *,
        *::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-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

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

        a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 2px;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button {
            cursor: pointer;
        }

        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding-left: var(--spacing-md);
            padding-right: var(--spacing-md);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            box-shadow: 0 1px 4px rgba(26, 26, 46, 0.04);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            line-height: 1;
        }

        .logo-text {
            font-size: 21px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            height: 100%;
        }

        .main-nav a {
            display: flex;
            align-items: center;
            height: 100%;
            font-size: 15px;
            font-weight: 500;
            color: #333333;
            padding: 0 var(--spacing-xs);
            position: relative;
            white-space: nowrap;
            text-decoration: none;
            transition: color var(--transition);
        }

        .main-nav a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .main-nav a.active {
            color: var(--color-primary);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 100%;
            height: 3px;
            background: var(--color-primary);
            border-radius: 2px 2px 0 0;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: var(--spacing-xs);
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
        }

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

        /* Mobile nav overlay */
        .mobile-nav-overlay {
            position: fixed;
            inset: 0;
            background: rgba(26, 26, 46, 0.98);
            z-index: 999;
            display: none;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: var(--spacing-md);
            padding: var(--spacing-xl);
        }

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

        .mobile-nav-overlay a {
            color: #fff;
            font-size: 18px;
            font-weight: 500;
            text-decoration: none;
            padding: var(--spacing-xs) var(--spacing-sm);
            transition: color var(--transition);
        }

        .mobile-nav-overlay a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }

        .mobile-nav-overlay .close-nav {
            position: absolute;
            top: 20px;
            right: 24px;
            background: none;
            border: none;
            color: #fff;
            font-size: 28px;
            line-height: 1;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-section {
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            padding: var(--spacing-sm) 0;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            font-size: 14px;
            color: var(--color-text-light);
        }

        .breadcrumb-nav a {
            color: var(--color-text-light);
            text-decoration: none;
            transition: color var(--transition);
        }

        .breadcrumb-nav a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

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

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

        /* ===== Category Hero ===== */
        .category-hero {
            background: linear-gradient(135deg, var(--color-secondary) 0%, #2C2C4A 60%, var(--color-primary-dark) 100%);
            padding: var(--spacing-xl) 0;
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/b41fb4a97e3fc545.jpg') center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }

        .category-hero .container {
            position: relative;
            z-index: 1;
        }

        .category-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }

        .category-hero .hero-description {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.82);
            max-width: 780px;
            line-height: 1.85;
            margin-bottom: 0;
        }

        .hero-badge {
            display: inline-block;
            background: var(--color-purple);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }

        /* ===== Section General ===== */
        .section {
            padding: var(--spacing-xl) 0;
        }

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

        .section-title {
            font-size: 24px;
            font-weight: 600;
            color: var(--color-secondary);
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.3px;
            position: relative;
            padding-bottom: var(--spacing-sm);
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 48px;
            height: 3px;
            background: var(--color-primary);
            border-radius: 2px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-light);
            margin-bottom: var(--spacing-lg);
            max-width: 680px;
        }

        /* ===== Featured Cards ===== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .featured-card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            border: 1px solid var(--color-border);
            display: flex;
            flex-direction: column;
        }

        .featured-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--color-primary);
        }

        .featured-card .card-image {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
        }

        .featured-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

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

        .featured-card .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-purple);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 4px;
            letter-spacing: 0.3px;
        }

        .featured-card .confidence-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--color-accent);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 4px;
        }

        .featured-card .card-body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .featured-card .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: var(--spacing-xs);
            line-height: 1.45;
        }

        .featured-card .card-summary {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.7;
            flex: 1;
            margin-bottom: var(--spacing-sm);
        }

        .featured-card .card-meta {
            font-size: 12px;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
        }

        /* ===== Article Grid ===== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .article-card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            border: 1px solid var(--color-border);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-accent);
        }

        .article-card .card-image {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--color-secondary);
        }

        .article-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .article-card:hover .card-image img {
            transform: scale(1.04);
        }

        .article-card .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-purple);
            color: #fff;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 3px;
            letter-spacing: 0.3px;
        }

        .article-card .card-body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-card .card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: var(--spacing-xs);
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card .card-summary {
            font-size: 13px;
            color: var(--color-text-light);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: var(--spacing-sm);
            flex: 1;
        }

        .article-card .card-meta {
            font-size: 12px;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: var(--spacing-xs);
            border-top: 1px solid var(--color-border);
        }

        /* ===== Stats Strip ===== */
        .stats-strip {
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-md) var(--spacing-lg);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
        }

        .stat-item {
            text-align: center;
            padding: var(--spacing-sm);
        }

        .stat-number {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.3;
        }

        .stat-label {
            font-size: 13px;
            color: var(--color-text-light);
            margin-top: 4px;
        }

        /* ===== Related Category Grid ===== */
        .related-cat-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: var(--spacing-sm);
        }

        .related-cat-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
            text-decoration: none;
            transition: all var(--transition);
            display: block;
        }

        .related-cat-item:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-md);
            text-decoration: none;
            transform: translateY(-2px);
        }

        .related-cat-item .cat-icon {
            font-size: 28px;
            margin-bottom: var(--spacing-xs);
            display: block;
        }

        .related-cat-item .cat-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-dark);
        }

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

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

        .faq-question {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-sm);
            cursor: pointer;
            padding: var(--spacing-xs) 0;
            transition: color var(--transition);
            user-select: none;
        }

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

        .faq-question .q-mark {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-secondary);
            flex-shrink: 0;
            width: 24px;
        }

        .faq-question .q-text {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-dark);
            flex: 1;
        }

        .faq-answer {
            display: none;
            padding: var(--spacing-xs) 0 var(--spacing-sm) 32px;
            font-size: 14px;
            color: #555;
            line-height: 1.75;
        }

        .faq-answer.open {
            display: block;
            animation: fadeIn 0.25s ease;
        }

        .faq-answer .a-mark {
            font-weight: 600;
            color: var(--color-text-dark);
            margin-right: 4px;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-4px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-secondary) 0%, #2C2C4A 50%, var(--color-primary-dark) 100%);
            padding: var(--spacing-xl) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/76d4e81c0ab0d238.webp') center/cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }

        .cta-section p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto var(--spacing-md);
            line-height: 1.8;
        }

        .btn {
            display: inline-block;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            text-decoration: none;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            letter-spacing: 0.3px;
        }

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

        .btn-primary:hover {
            background: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(192, 57, 43, 0.35);
        }

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

        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
        }

        .btn-accent {
            background: var(--color-accent);
            color: #fff;
        }

        .btn-accent:hover {
            background: var(--color-accent-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(230, 126, 34, 0.35);
        }

        .btn-light {
            background: #fff;
            color: var(--color-secondary);
        }

        .btn-light:hover {
            background: rgba(255, 255, 255, 0.9);
            color: var(--color-secondary);
            text-decoration: none;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-secondary);
            color: rgba(255, 255, 255, 0.7);
            padding: var(--spacing-xl) 0 var(--spacing-sm);
            margin-top: auto;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }

        .site-footer .footer-brand .logo-text {
            color: #fff;
            font-size: 20px;
            display: block;
            margin-bottom: var(--spacing-sm);
        }

        .site-footer .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }

        .site-footer .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }

        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer .footer-col ul li {
            margin-bottom: var(--spacing-xs);
        }

        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            text-decoration: none;
            transition: color var(--transition);
        }

        .site-footer .footer-col ul li a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: var(--spacing-md);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
            align-items: center;
            text-align: center;
        }

        .site-footer .footer-bottom span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            :root {
                --header-height: 60px;
                --spacing-xl: 40px;
                --spacing-lg: 32px;
            }
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .related-cat-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 56px;
                --spacing-xl: 32px;
                --spacing-lg: 24px;
                --spacing-md: 16px;
                --spacing-sm: 12px;
            }
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .category-hero .hero-description {
                font-size: 14px;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .related-cat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
                padding: var(--spacing-sm);
            }
            .stat-number {
                font-size: 20px;
            }
            .section-title {
                font-size: 20px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
                text-align: center;
            }
            .site-footer .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            :root {
                --header-height: 52px;
                --spacing-xl: 24px;
                --spacing-lg: 20px;
                --spacing-md: 14px;
                --spacing-sm: 10px;
                --spacing-xs: 6px;
            }
            .category-hero h1 {
                font-size: 21px;
            }
            .section-title {
                font-size: 18px;
            }
            .related-cat-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-xs);
            }
            .related-cat-item {
                padding: var(--spacing-sm);
            }
            .related-cat-item .cat-icon {
                font-size: 22px;
            }
            .related-cat-item .cat-name {
                font-size: 12px;
            }
            .stats-strip {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-xs);
                padding: var(--spacing-xs);
            }
            .stat-number {
                font-size: 18px;
            }
            .stat-label {
                font-size: 11px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 13px;
            }
            .faq-question .q-text {
                font-size: 14px;
            }
            .faq-answer {
                font-size: 13px;
                padding-left: 24px;
            }
        }

        @media (max-width: 360px) {
            .related-cat-grid {
                grid-template-columns: 1fr;
            }
            .stats-strip {
                grid-template-columns: 1fr;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}