/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a56db;
            --primary-light: #2563eb;
            --primary-dark: #1e40af;
            --primary-bg: #eff6ff;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --secondary-dark: #d97706;
            --accent: #06b6d4;
            --bg: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-dark-secondary: #1e293b;
            --text: #1e293b;
            --text-secondary: #475569;
            --text-light: #94a3b8;
            --text-white: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
        }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: var(--radius-sm); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; font-size: 1rem; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text); font-weight: 700; }
        h1 { font-size: 2.75rem; letter-spacing: -0.02em; }
        h2 { font-size: 2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.375rem; }
        h4 { font-size: 1.125rem; }
        p { color: var(--text-secondary); margin-bottom: 1rem; }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Utility ===== */
        .section-padding { padding: 80px 0; }
        .section-title { text-align: center; margin-bottom: 16px; }
        .section-subtitle { text-align: center; color: var(--text-secondary); font-size: 1.125rem; max-width: 640px; margin: 0 auto 48px; }
        .badge {
            display: inline-block;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 0.8125rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 100px;
            letter-spacing: 0.01em;
        }
        .tag {
            display: inline-block;
            background: var(--border-light);
            color: var(--text-secondary);
            font-size: 0.75rem;
            font-weight: 500;
            padding: 2px 12px;
            border-radius: 100px;
            transition: background var(--transition);
        }
        .tag:hover { background: var(--border); }
        .divider { width: 60px; height: 4px; background: var(--primary); border-radius: 4px; margin: 16px auto 24px; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 28px;
            font-weight: 600;
            font-size: 0.9375rem;
            border-radius: var(--radius-md);
            transition: all var(--transition);
            border: 2px solid transparent;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26,86,219,0.30);
        }
        .btn-primary:active { transform: translateY(0); box-shadow: none; }
        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-secondary:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26,86,219,0.20);
        }
        .btn-ghost {
            background: transparent;
            color: var(--text-secondary);
            border-color: var(--border);
        }
        .btn-ghost:hover {
            background: var(--bg);
            border-color: var(--text-light);
            color: var(--text);
        }
        .btn-lg { padding: 14px 36px; font-size: 1.0625rem; border-radius: var(--radius-lg); }
        .btn-sm { padding: 6px 18px; font-size: 0.8125rem; border-radius: var(--radius-sm); }
        .btn i { font-size: 0.875em; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255,255,255,0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            transition: box-shadow var(--transition);
        }
        .site-header:hover { box-shadow: var(--shadow-sm); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.03em;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i { color: var(--primary); font-size: 1.25em; }
        .logo:hover { color: var(--primary); }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-list a {
            padding: 8px 18px;
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-md);
            transition: all var(--transition);
            position: relative;
        }
        .nav-list a:hover { color: var(--primary); background: var(--primary-bg); }
        .nav-list a.active {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 100px;
            padding: 0 16px;
            height: 40px;
            width: 180px;
            transition: all var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26,86,219,0.12);
            width: 220px;
        }
        .search-box i { color: var(--text-light); font-size: 0.875rem; margin-right: 8px; }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            width: 100%;
            font-size: 0.875rem;
            color: var(--text);
        }
        .search-box input::placeholder { color: var(--text-light); }
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 4px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .mobile-toggle:hover { background: var(--bg); }

        /* ===== Hero ===== */
        .hero {
            padding-top: calc(var(--header-height) + 40px);
            padding-bottom: 80px;
            background: var(--bg);
            position: relative;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(26,86,219,0.06) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }
        .hero .container { position: relative; z-index: 1; }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .hero-content { max-width: 580px; }
        .hero-content .badge { margin-bottom: 16px; }
        .hero-content h1 {
            font-size: 3rem;
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--text);
        }
        .hero-content h1 span { color: var(--primary); }
        .hero-content p {
            font-size: 1.125rem;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 32px;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid var(--border);
        }
        .hero-stat h3 { font-size: 1.75rem; color: var(--primary); }
        .hero-stat p { font-size: 0.875rem; color: var(--text-light); margin-bottom: 0; }
        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            padding: 32px;
            width: 100%;
            max-width: 480px;
            border: 1px solid var(--border-light);
        }
        .hero-card-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .hero-card-item {
            background: var(--bg);
            border-radius: var(--radius-md);
            padding: 20px 16px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .hero-card-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
        .hero-card-item i { font-size: 2rem; color: var(--primary); margin-bottom: 8px; }
        .hero-card-item h4 { font-size: 0.9375rem; margin-bottom: 4px; }
        .hero-card-item p { font-size: 0.75rem; color: var(--text-light); margin-bottom: 0; }

        /* ===== Features ===== */
        .features { background: var(--bg-card); }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .feature-card {
            background: var(--bg);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .feature-card:hover { border-color: var(--primary-light); box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .feature-icon {
            width: 56px;
            height: 56px;
            background: var(--primary-bg);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 20px;
        }
        .feature-card h3 { margin-bottom: 8px; }
        .feature-card p { font-size: 0.9375rem; margin-bottom: 0; }

        /* ===== Category (彩神指南) ===== */
        .category-section { background: var(--bg); }
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover { border-color: var(--primary-light); box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .category-card-img {
            height: 200px;
            background: var(--border-light);
            position: relative;
            overflow: hidden;
        }
        .category-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .category-card:hover .category-card-img img { transform: scale(1.05); }
        .category-card-img .overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 16px 20px;
            background: linear-gradient(transparent, rgba(0,0,0,0.5));
        }
        .category-card-img .overlay .badge { background: rgba(255,255,255,0.9); color: var(--text); }
        .category-card-body { padding: 24px 24px 28px; flex: 1; display: flex; flex-direction: column; }
        .category-card-body h3 { margin-bottom: 8px; }
        .category-card-body p { font-size: 0.9375rem; flex: 1; margin-bottom: 16px; }
        .category-card-body .btn { align-self: flex-start; }

        /* ===== News / CMS List ===== */
        .news-section { background: var(--bg-card); }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--bg);
            border-radius: var(--radius-lg);
            padding: 24px 24px 28px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: block;
            color: var(--text);
        }
        .news-card:hover { border-color: var(--primary-light); box-shadow: var(--shadow-md); transform: translateY(-3px); color: var(--text); }
        .news-card .tag { margin-bottom: 12px; }
        .news-card h3 { font-size: 1.125rem; margin-bottom: 8px; transition: color var(--transition); }
        .news-card:hover h3 { color: var(--primary); }
        .news-card p { font-size: 0.9375rem; margin-bottom: 16px; }
        .news-card-footer { display: flex; align-items: center; justify-content: space-between; font-size: 0.8125rem; color: var(--text-light); }
        .news-card-footer i { margin-right: 4px; }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            background: var(--bg);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border);
        }
        .news-empty i { font-size: 2.5rem; color: var(--text-light); margin-bottom: 16px; }
        .news-empty p { font-size: 1rem; color: var(--text-secondary); margin-bottom: 0; }

        /* ===== Stats / Process ===== */
        .stats-section {
            background: var(--bg-dark);
            color: var(--text-white);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(26,86,219,0.15) 0%, transparent 70%);
            border-radius: 50%;
        }
        .stats-section .container { position: relative; z-index: 1; }
        .stats-section .section-title { color: #fff; }
        .stats-section .section-subtitle { color: var(--text-light); }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-top: 16px;
        }
        .stat-card { text-align: center; padding: 24px 16px; }
        .stat-card .number { font-size: 2.75rem; font-weight: 800; color: #fff; line-height: 1.2; }
        .stat-card .number span { color: var(--secondary); }
        .stat-card p { color: var(--text-light); font-size: 0.9375rem; margin-top: 8px; margin-bottom: 0; }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 56px;
        }
        .process-step {
            text-align: center;
            padding: 32px 24px;
            background: rgba(255,255,255,0.04);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255,255,255,0.06);
            transition: all var(--transition);
            position: relative;
        }
        .process-step:hover { background: rgba(255,255,255,0.08); transform: translateY(-4px); }
        .process-step .step-num {
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.25rem;
            margin: 0 auto 16px;
        }
        .process-step h4 { color: #fff; margin-bottom: 8px; }
        .process-step p { color: var(--text-light); font-size: 0.875rem; margin-bottom: 0; }
        .process-step::after {
            content: '→';
            position: absolute;
            top: 50%;
            right: -24px;
            transform: translateY(-50%);
            font-size: 1.5rem;
            color: var(--primary-light);
            opacity: 0.5;
        }
        .process-step:last-child::after { display: none; }

        /* ===== FAQ ===== */
        .faq-section { background: var(--bg-card); }
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover { border-color: var(--border); }
        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            background: var(--bg);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background var(--transition);
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover { background: var(--border-light); }
        .faq-question i { color: var(--text-light); transition: transform var(--transition); font-size: 0.875rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.35s ease;
            background: var(--bg-card);
        }
        .faq-item.active .faq-answer {
            padding: 0 24px 20px;
            max-height: 300px;
        }
        .faq-answer p { font-size: 0.9375rem; margin-bottom: 0; color: var(--text-secondary); }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            bottom: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(26,86,219,0.05) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-box {
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            text-align: center;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-md);
            position: relative;
            z-index: 1;
            max-width: 800px;
            margin: 0 auto;
        }
        .cta-box h2 { margin-bottom: 12px; }
        .cta-box p { font-size: 1.0625rem; max-width: 520px; margin: 0 auto 28px; }
        .cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo { color: #fff; margin-bottom: 16px; }
        .footer-brand .logo i { color: var(--secondary); }
        .footer-brand p { font-size: 0.9375rem; color: var(--text-light); max-width: 320px; margin-bottom: 20px; }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 40px;
            height: 40px;
            background: rgba(255,255,255,0.06);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            transition: all var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: var(--text-light); font-size: 0.875rem; transition: color var(--transition); }
        .footer-col ul li a:hover { color: var(--secondary); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.8125rem;
        }
        .footer-bottom p { margin-bottom: 0; color: var(--text-light); }
        .footer-bottom a { color: var(--text-light); }
        .footer-bottom a:hover { color: var(--secondary); }

        /* ===== Mobile Nav ===== */
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            padding: 24px;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-lg);
            z-index: 999;
            max-height: calc(100vh - var(--header-height));
            overflow-y: auto;
        }
        .mobile-menu.open { display: block; }
        .mobile-menu a {
            display: block;
            padding: 14px 16px;
            font-size: 1.0625rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-md);
            transition: all var(--transition);
        }
        .mobile-menu a:hover { background: var(--primary-bg); color: var(--primary); }
        .mobile-menu a.active { color: var(--primary); background: var(--primary-bg); font-weight: 600; }
        .mobile-menu .mobile-actions { margin-top: 16px; display: flex; flex-direction: column; gap: 12px; }
        .mobile-menu .mobile-actions .btn { width: 100%; justify-content: center; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-grid { grid-template-columns: 1fr; gap: 40px; }
            .hero-content { max-width: 100%; text-align: center; }
            .hero-actions { justify-content: center; }
            .hero-stats { justify-content: center; }
            .hero-visual { order: -1; }
            .hero-card { max-width: 100%; }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .process-steps { grid-template-columns: 1fr; max-width: 400px; margin-left: auto; margin-right: auto; }
            .process-step::after { display: none; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            :root { --header-height: 64px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.625rem; }
            .section-padding { padding: 56px 0; }
            .nav-list { display: none; }
            .header-actions .search-box { display: none; }
            .header-actions .btn { display: none; }
            .mobile-toggle { display: block; }
            .hero { padding-top: calc(var(--header-height) + 24px); padding-bottom: 48px; }
            .hero-content h1 { font-size: 2.125rem; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-card-grid { grid-template-columns: 1fr 1fr; }
            .features-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
            .category-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .stat-card .number { font-size: 2rem; }
            .cta-box { padding: 36px 24px; }
            .footer-grid { grid-template-columns: 1fr; text-align: center; }
            .footer-brand p { max-width: 100%; }
            .footer-social { justify-content: center; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .hero-content h1 { font-size: 1.625rem; }
            .hero-card-grid { grid-template-columns: 1fr; }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .hero-actions .btn { width: 100%; }
            .stats-grid { grid-template-columns: 1fr; }
            .cta-actions { flex-direction: column; align-items: stretch; }
            .cta-actions .btn { width: 100%; }
        }
        @media (min-width: 769px) {
            .mobile-menu { display: none !important; }
        }

        /* ===== Accessibility ===== */
        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
        }
        :focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --secondary: #e8a832;
            --secondary-light: #f0c060;
            --secondary-dark: #c88a1e;
            --accent: #3b8fc2;
            --accent-light: #5aadd4;
            --bg-body: #f8f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f2440;
            --bg-section-alt: #f0f4f9;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-light: #8a9aaa;
            --text-white: #ffffff;
            --border-color: #e2e8f0;
            --border-light: #f0f2f5;
            --shadow-sm: 0 2px 8px rgba(26, 58, 92, 0.06);
            --shadow-md: 0 8px 30px rgba(26, 58, 92, 0.10);
            --shadow-lg: 0 20px 60px rgba(26, 58, 92, 0.14);
            --shadow-hover: 0 16px 48px rgba(26, 58, 92, 0.18);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
            --spacing-section: 80px;
            --spacing-element: 24px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        a:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .logo i {
            color: var(--secondary);
            font-size: 26px;
        }
        .logo a {
            color: inherit;
            text-decoration: none;
        }
        .logo a:hover {
            color: var(--primary);
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-list a {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 6px 0;
            transition: color var(--transition);
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
            transition: width var(--transition);
        }
        .nav-list a:hover {
            color: var(--primary);
        }
        .nav-list a:hover::after {
            width: 100%;
        }
        .nav-list a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-list a.active::after {
            width: 100%;
            background: var(--secondary);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .search-toggle {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--bg-section-alt);
            color: var(--text-secondary);
            font-size: 16px;
            transition: all var(--transition);
        }
        .search-toggle:hover {
            background: var(--secondary);
            color: #fff;
            transform: scale(1.05);
        }
        .btn-header {
            padding: 10px 24px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(26, 58, 92, 0.20);
        }
        .btn-header:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 58, 92, 0.28);
            color: #fff;
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            background: var(--bg-section-alt);
            border-radius: 8px;
            transition: background var(--transition);
        }
        .menu-toggle:hover {
            background: var(--border-color);
        }

        /* ===== Hero / Banner ===== */
        .page-banner {
            padding-top: calc(var(--header-height) + 40px);
            padding-bottom: 60px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 44px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .page-banner p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.80);
            max-width: 720px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .banner-breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.60);
        }
        .banner-breadcrumb a {
            color: rgba(255, 255, 255, 0.80);
        }
        .banner-breadcrumb a:hover {
            color: var(--secondary);
        }
        .banner-breadcrumb span {
            color: var(--secondary-light);
        }

        /* ===== Section Common ===== */
        section {
            padding: var(--spacing-section) 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-title p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-title .subtitle-highlight {
            display: inline-block;
            background: var(--secondary);
            color: var(--primary-dark);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        /* ===== Guide Intro ===== */
        .guide-intro {
            background: var(--bg-card);
        }
        .guide-intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .guide-intro-text h3 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--primary);
        }
        .guide-intro-text p {
            color: var(--text-secondary);
            margin-bottom: 16px;
            line-height: 1.8;
        }
        .guide-intro-text .intro-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 20px;
        }
        .guide-intro-text .intro-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text-secondary);
        }
        .guide-intro-text .intro-list li i {
            color: var(--secondary);
            font-size: 18px;
            margin-top: 3px;
            flex-shrink: 0;
        }
        .guide-intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .guide-intro-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .guide-intro-image:hover img {
            transform: scale(1.03);
        }

        /* ===== Guide Cards ===== */
        .guide-cards {
            background: var(--bg-section-alt);
        }
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 28px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .guide-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--secondary);
            opacity: 0;
            transition: opacity var(--transition);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .guide-card:hover::before {
            opacity: 1;
        }
        .guide-card .card-icon {
            width: 56px;
            height: 56px;
            background: var(--bg-section-alt);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--primary);
            margin-bottom: 18px;
            transition: background var(--transition), color var(--transition);
        }
        .guide-card:hover .card-icon {
            background: var(--secondary);
            color: var(--primary-dark);
        }
        .guide-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .guide-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .guide-card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .guide-card .card-tags span {
            display: inline-block;
            padding: 4px 14px;
            background: var(--bg-section-alt);
            border-radius: 50px;
            font-size: 12px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .guide-card .card-tags span:hover {
            background: var(--secondary-light);
            color: var(--primary-dark);
        }

        /* ===== Stats ===== */
        .stats-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .stats-section .container {
            position: relative;
            z-index: 2;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stat-item {
            padding: 24px 16px;
        }
        .stat-item .stat-number {
            font-size: 42px;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 6px;
            letter-spacing: -1px;
        }
        .stat-item .stat-label {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
        }
        .stat-item .stat-icon {
            font-size: 32px;
            color: rgba(255, 255, 255, 0.15);
            margin-bottom: 12px;
        }

        /* ===== Featured Content ===== */
        .featured-content {
            background: var(--bg-card);
        }
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .featured-item {
            display: flex;
            gap: 20px;
            background: var(--bg-section-alt);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .featured-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--secondary-light);
        }
        .featured-item .item-thumb {
            width: 160px;
            min-height: 120px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }
        .featured-item .item-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .featured-item:hover .item-thumb img {
            transform: scale(1.06);
        }
        .featured-item .item-info {
            flex: 1;
        }
        .featured-item .item-info .item-badge {
            display: inline-block;
            padding: 2px 12px;
            background: var(--secondary);
            color: var(--primary-dark);
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .featured-item .item-info h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .featured-item .item-info p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 10px;
        }
        .featured-item .item-info .item-meta {
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            gap: 16px;
        }
        .featured-item .item-info .item-meta i {
            margin-right: 4px;
        }

        /* ===== Process / Steps ===== */
        .process-section {
            background: var(--bg-section-alt);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            position: relative;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 48px;
            left: 15%;
            right: 15%;
            height: 2px;
            background: linear-gradient(to right, var(--secondary), var(--accent), var(--secondary));
            opacity: 0.3;
        }
        .step-item {
            text-align: center;
            position: relative;
            z-index: 2;
            background: var(--bg-card);
            padding: 32px 24px 28px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-item .step-number {
            width: 56px;
            height: 56px;
            background: var(--primary);
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 4px 16px rgba(26, 58, 92, 0.20);
        }
        .step-item h4 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-card);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--secondary-light);
        }
        .faq-question {
            width: 100%;
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            background: var(--bg-section-alt);
            text-align: left;
            transition: background var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            background: var(--border-light);
        }
        .faq-question i {
            font-size: 14px;
            color: var(--text-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--secondary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            background: var(--bg-card);
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 18px 24px 24px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.80);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            padding: 14px 36px;
            background: var(--secondary);
            color: var(--primary-dark);
            border-radius: 50px;
            font-weight: 700;
            font-size: 16px;
            transition: all var(--transition);
            box-shadow: 0 6px 24px rgba(232, 168, 50, 0.35);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary:hover {
            background: var(--secondary-light);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(232, 168, 50, 0.45);
            color: var(--primary-dark);
        }
        .btn-outline-light {
            padding: 14px 36px;
            border: 2px solid rgba(255, 255, 255, 0.40);
            color: var(--text-white);
            border-radius: 50px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-light:hover {
            border-color: var(--secondary);
            background: var(--secondary);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.70);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 24px;
            margin-bottom: 16px;
        }
        .footer-brand .logo i {
            color: var(--secondary);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 14px;
            margin-top: 20px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.50);
            font-size: 16px;
            transition: all var(--transition);
        }
        .footer-social a:hover {
            background: var(--secondary);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps::before {
                display: none;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 56px;
                --header-height: 64px;
            }
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 24px 32px;
                gap: 20px;
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s ease;
                border-bottom: 2px solid var(--border-light);
                z-index: 999;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-list a {
                font-size: 17px;
                padding: 8px 0;
            }
            .menu-toggle {
                display: flex;
            }
            .header-actions .btn-header {
                display: none;
            }
            .search-toggle {
                width: 36px;
                height: 36px;
                font-size: 14px;
            }

            .page-banner {
                min-height: 240px;
                padding-top: calc(var(--header-height) + 24px);
                padding-bottom: 40px;
            }
            .page-banner h1 {
                font-size: 30px;
            }
            .page-banner p {
                font-size: 16px;
            }

            .section-title h2 {
                font-size: 26px;
            }
            .section-title p {
                font-size: 15px;
            }

            .guide-intro-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .guide-intro-image img {
                height: 240px;
            }

            .cards-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 32px;
            }

            .process-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .featured-item {
                flex-direction: column;
            }
            .featured-item .item-thumb {
                width: 100%;
                height: 180px;
            }

            .faq-question {
                font-size: 15px;
                padding: 14px 18px;
            }

            .cta-section h2 {
                font-size: 28px;
            }
            .cta-section p {
                font-size: 16px;
            }
            .btn-primary,
            .btn-outline-light {
                padding: 12px 28px;
                font-size: 15px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 24px;
            }
            .page-banner p {
                font-size: 14px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 16px 8px;
            }
            .stat-item .stat-number {
                font-size: 28px;
            }
            .guide-card {
                padding: 24px 20px 20px;
            }
            .section-title h2 {
                font-size: 22px;
            }
            .featured-item .item-thumb {
                height: 140px;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #c8a97e;
            --primary-dark: #b8956a;
            --primary-light: #e8d5b8;
            --primary-bg: #fdf8f0;
            --secondary: #3a3a3a;
            --accent: #d4af37;
            --bg-body: #faf8f5;
            --bg-card: #ffffff;
            --bg-dark: #2c2c2c;
            --text-primary: #1f1f1f;
            --text-secondary: #5a5a5a;
            --text-light: #888888;
            --text-white: #f9f9f9;
            --border-color: #eae5dd;
            --border-light: #f0ece6;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::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-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

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

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

        a:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }

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

        .section-padding {
            padding: 80px 0;
        }

        .section-title {
            font-size: 2rem;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.6;
        }

        .text-center {
            text-align: center;
        }

        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        /* ===== Button ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
            border: 2px solid transparent;
            background: transparent;
            color: var(--text-primary);
            text-align: center;
            justify-content: center;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200, 169, 126, 0.35);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(200, 169, 126, 0.25);
        }

        .btn-outline {
            border-color: var(--border-color);
            color: var(--text-primary);
            background: var(--bg-card);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary-dark);
            background: var(--primary-bg);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }

        /* ===== Badge / Tag ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: var(--primary-bg);
            color: var(--primary-dark);
            border: 1px solid var(--primary-light);
            transition: var(--transition);
        }

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

        .badge:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.03em;
            white-space: nowrap;
        }

        .logo i {
            color: var(--primary);
            font-size: 1.5rem;
        }

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

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.92rem;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }

        .nav-list a:hover {
            color: var(--text-primary);
            background: var(--primary-bg);
        }

        .nav-list a.active {
            color: var(--primary-dark);
            background: var(--primary-bg);
            font-weight: 600;
        }

        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            padding: 0 16px;
            height: 40px;
            transition: var(--transition);
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(200, 169, 126, 0.12);
        }

        .search-box i {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-right: 8px;
        }

        .search-box input {
            background: transparent;
            border: none;
            outline: none;
            font-size: 0.88rem;
            color: var(--text-primary);
            width: 140px;
        }

        .search-box input::placeholder {
            color: var(--text-light);
        }

        .nav-actions .btn {
            padding: 8px 20px;
            font-size: 0.88rem;
        }

        /* Mobile hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            background: none;
            border: none;
        }

        .hamburger span {
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            margin-top: var(--header-height);
            padding: 60px 0 40px;
            background: linear-gradient(135deg, var(--primary-bg) 0%, #f5efe6 100%);
            border-bottom: 1px solid var(--border-light);
        }

        .article-hero .container {
            max-width: 860px;
        }

        .article-hero .badge {
            margin-bottom: 16px;
        }

        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            align-items: center;
        }

        .article-meta i {
            margin-right: 6px;
            color: var(--primary);
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
        }

        /* ===== Article Content ===== */
        .article-main {
            padding: 48px 0 80px;
        }

        .article-main .container {
            max-width: 860px;
        }

        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-primary);
        }

        .article-body p {
            margin-bottom: 1.4em;
        }

        .article-body h2 {
            font-size: 1.6rem;
            margin-top: 2em;
            margin-bottom: 0.8em;
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        .article-body h3 {
            font-size: 1.25rem;
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            font-weight: 600;
        }

        .article-body ul,
        .article-body ol {
            margin-bottom: 1.4em;
            padding-left: 1.6em;
        }

        .article-body li {
            margin-bottom: 0.5em;
            list-style: disc;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 1.6em 0;
            background: var(--primary-bg);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.6em 0;
            box-shadow: var(--shadow-sm);
        }

        .article-body a {
            color: var(--primary-dark);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-thickness: 1px;
        }

        .article-body a:hover {
            color: var(--primary);
            text-decoration-thickness: 2px;
        }

        .article-footer-bar {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid var(--border-color);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-body);
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .article-share a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Article Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
        }

        .not-found-box i {
            font-size: 3.6rem;
            color: var(--primary-light);
            margin-bottom: 20px;
        }

        .not-found-box h2 {
            font-size: 1.6rem;
            margin-bottom: 12px;
        }

        .not-found-box p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        /* ===== Related / Suggestion ===== */
        .related-section {
            background: var(--bg-body);
            border-top: 1px solid var(--border-light);
            padding: 60px 0;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }

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

        .related-card .badge {
            margin-bottom: 10px;
        }

        .related-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .related-card h3 a {
            color: var(--text-primary);
        }

        .related-card h3 a:hover {
            color: var(--primary-dark);
        }

        .related-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            color: var(--text-white);
            padding: 60px 0;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 28px;
            font-size: 1.02rem;
        }

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

        .cta-section .btn-primary:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            color: var(--bg-dark);
            box-shadow: 0 8px 30px rgba(200, 169, 126, 0.4);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1a1a1a;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo {
            color: #fff;
            font-size: 1.25rem;
            margin-bottom: 14px;
        }

        .footer-brand .logo i {
            color: var(--primary);
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 340px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 18px;
        }

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.84rem;
            color: rgba(255, 255, 255, 0.4);
            gap: 12px;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-hero h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
            }
            .section-padding {
                padding: 48px 0;
            }
            .container {
                padding: 0 16px;
            }
            .nav-list {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-list a.active::after {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .search-box {
                display: none;
            }
            .nav-actions .btn {
                padding: 8px 14px;
                font-size: 0.82rem;
            }
            .article-hero {
                padding: 40px 0 28px;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-meta {
                gap: 12px;
                font-size: 0.84rem;
            }
            .article-main {
                padding: 32px 0 48px;
            }
            .article-body {
                font-size: 0.98rem;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .article-footer-bar {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 1.3rem;
            }
            .article-meta {
                flex-direction: column;
                gap: 6px;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 0.92rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.2rem;
            }
        }

        /* ===== Print ===== */
        @media print {
            .site-header,
            .site-footer,
            .cta-section,
            .related-section,
            .article-footer-bar {
                display: none !important;
            }
            .article-hero {
                margin-top: 0;
                padding: 20px 0;
                background: #fff;
                border-bottom: 1px solid #ddd;
            }
            .article-main {
                padding: 20px 0;
            }
            body {
                background: #fff;
                color: #000;
            }
        }