/* roulang page: index */
:root {
        --primary: #1470f5;
        --primary-dark: #0d5be1;
        --primary-light: #8eccff;
        --accent: #f59e0b;
        --bg-body: #f8fafc;
        --bg-white: #ffffff;
        --text-main: #0f172a;
        --text-muted: #64748b;
        --text-light: #94a3b8;
        --border: #e2e8f0;
        --radius: 16px;
        --radius-sm: 10px;
        --radius-lg: 24px;
        --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
        --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
        --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
        --spacing-section: 5rem;
    }
    * { margin:0; padding:0; box-sizing:border-box; }
    body { font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif; background: var(--bg-body); color: var(--text-main); line-height: 1.6; -webkit-font-smoothing: antialiased; }
    a { color: inherit; text-decoration: none; transition: color 0.2s; }
    img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
    button, input, textarea { font-family: inherit; }

    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
    .section { padding: var(--spacing-section) 0; }
    .section-title { font-size: 2rem; font-weight: 700; text-align: center; margin-bottom: 0.75rem; letter-spacing: -0.02em; color: #0f172a; }
    .section-subtitle { text-align: center; color: var(--text-muted); font-size: 1.1rem; max-width: 640px; margin: 0 auto 3rem auto; }

    /* Navigation */
    .nav-dock { position: sticky; top: 16px; z-index: 50; display: flex; justify-content: center; padding: 0 24px; }
    .nav-dock-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; max-width: 1100px; background: rgba(255,255,255,0.85); backdrop-filter: blur(16px) saturate(180%); -webkit-backdrop-filter: blur(16px) saturate(180%); border-radius: 60px; padding: 0 28px; height: 60px; box-shadow: 0 4px 24px rgba(0,0,0,0.06), 0 0 0 1px rgba(255,255,255,0.5); border: 1px solid rgba(255,255,255,0.8); transition: box-shadow 0.3s; }
    .nav-dock-inner:hover { box-shadow: 0 8px 32px rgba(0,0,0,0.10), 0 0 0 1px rgba(255,255,255,0.6); }
    .nav-logo { font-size: 1.25rem; font-weight: 700; color: #0f172a; letter-spacing: -0.02em; white-space: nowrap; background: linear-gradient(135deg, #1470f5, #0d5be1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .nav-links { display: flex; align-items: center; gap: 2px; list-style: none; }
    .nav-links a { display: flex; align-items: center; padding: 6px 18px; border-radius: 30px; font-size: 0.9rem; font-weight: 500; color: var(--text-muted); transition: all 0.2s; white-space: nowrap; }
    .nav-links a:hover { color: #0f172a; background: rgba(15,23,42,0.04); }
    .nav-links a.active { color: #fff; background: var(--primary); box-shadow: 0 2px 12px rgba(20,112,245,0.30); }
    .nav-links a.active:hover { background: var(--primary-dark); }
    .nav-cta { display: flex; align-items: center; gap: 8px; }
    .nav-cta .btn-nav { padding: 6px 20px; border-radius: 30px; font-size: 0.85rem; font-weight: 600; background: var(--primary); color: #fff; transition: all 0.2s; white-space: nowrap; }
    .nav-cta .btn-nav:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(20,112,245,0.30); }
    .nav-toggle { display: none; background: none; border: none; font-size: 1.4rem; color: #0f172a; cursor: pointer; padding: 4px 8px; border-radius: 8px; transition: background 0.2s; }
    .nav-toggle:hover { background: rgba(0,0,0,0.04); }

    /* Hero */
    .hero { position: relative; min-height: 92vh; display: flex; align-items: center; justify-content: center; text-align: center; padding: 120px 24px 80px; overflow: hidden; }
    .hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat; filter: brightness(0.45) saturate(1.1); z-index: 0; }
    .hero-bg::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(15,23,42,0.30) 0%, rgba(15,23,42,0.70) 100%); }
    .hero-content { position: relative; z-index: 1; max-width: 820px; }
    .hero-badge { display: inline-block; padding: 6px 20px; border-radius: 30px; background: rgba(255,255,255,0.12); backdrop-filter: blur(8px); color: #fff; font-size: 0.85rem; font-weight: 500; letter-spacing: 0.3px; border: 1px solid rgba(255,255,255,0.15); margin-bottom: 1.5rem; }
    .hero h1 { font-size: 3.5rem; font-weight: 800; line-height: 1.15; color: #fff; letter-spacing: -0.03em; margin-bottom: 1.25rem; text-shadow: 0 2px 20px rgba(0,0,0,0.20); }
    .hero h1 span { background: linear-gradient(135deg, #8eccff, #53b0ff); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .hero p { font-size: 1.2rem; color: rgba(255,255,255,0.80); max-width: 600px; margin: 0 auto 2rem auto; line-height: 1.7; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
    .hero-actions .btn-primary { padding: 14px 36px; border-radius: 40px; font-size: 1rem; font-weight: 600; background: var(--primary); color: #fff; transition: all 0.25s; box-shadow: 0 4px 20px rgba(20,112,245,0.35); }
    .hero-actions .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 32px rgba(20,112,245,0.45); }
    .hero-actions .btn-outline { padding: 14px 36px; border-radius: 40px; font-size: 1rem; font-weight: 600; background: rgba(255,255,255,0.10); backdrop-filter: blur(8px); color: #fff; border: 1px solid rgba(255,255,255,0.25); transition: all 0.25s; }
    .hero-actions .btn-outline:hover { background: rgba(255,255,255,0.20); border-color: rgba(255,255,255,0.40); transform: translateY(-2px); }

    /* Cards & Grids */
    .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
    .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
    .card { background: var(--bg-white); border-radius: var(--radius); box-shadow: var(--shadow-sm); border: 1px solid var(--border); transition: all 0.3s; overflow: hidden; }
    .card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
    .card-body { padding: 28px; }
    .card-img { width: 100%; height: 200px; object-fit: cover; border-radius: var(--radius) var(--radius) 0 0; }
    .card-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.5rem; color: #0f172a; }
    .card-text { color: var(--text-muted); font-size: 0.95rem; line-height: 1.6; }
    .card-tag { display: inline-block; padding: 3px 12px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; background: rgba(20,112,245,0.08); color: var(--primary); margin-bottom: 10px; }

    /* Feature cards */
    .feature-card { text-align: center; padding: 32px 24px; border-radius: var(--radius); background: var(--bg-white); border: 1px solid var(--border); transition: all 0.3s; }
    .feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
    .feature-icon { width: 56px; height: 56px; border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; font-size: 1.6rem; color: #fff; }
    .feature-icon.blue { background: linear-gradient(135deg, #1470f5, #0d5be1); }
    .feature-icon.amber { background: linear-gradient(135deg, #f59e0b, #d97706); }
    .feature-icon.emerald { background: linear-gradient(135deg, #10b981, #059669); }
    .feature-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
    .feature-card p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; }

    /* Stats */
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .stat-item { text-align: center; padding: 24px; background: rgba(255,255,255,0.06); backdrop-filter: blur(8px); border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.10); }
    .stat-number { font-size: 2.5rem; font-weight: 800; color: #fff; line-height: 1.2; letter-spacing: -0.02em; }
    .stat-label { color: rgba(255,255,255,0.70); font-size: 0.9rem; margin-top: 4px; }

    /* FAQ */
    .faq-item { border-bottom: 1px solid var(--border); padding: 20px 0; }
    .faq-item:first-child { padding-top: 0; }
    .faq-question { display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 1.05rem; cursor: pointer; color: #0f172a; padding: 4px 0; }
    .faq-question i { color: var(--text-light); transition: transform 0.3s; font-size: 1rem; }
    .faq-question.open i { transform: rotate(180deg); }
    .faq-answer { color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; padding-top: 12px; display: none; }
    .faq-answer.open { display: block; }

    /* CTA */
    .cta-section { background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%); border-radius: var(--radius-lg); padding: 60px 48px; text-align: center; position: relative; overflow: hidden; }
    .cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; opacity: 0.10; }
    .cta-section h2 { font-size: 2.2rem; font-weight: 700; color: #fff; margin-bottom: 1rem; position: relative; }
    .cta-section p { color: rgba(255,255,255,0.75); max-width: 560px; margin: 0 auto 2rem; font-size: 1.05rem; position: relative; }
    .cta-section .btn-primary { padding: 14px 40px; border-radius: 40px; font-size: 1.05rem; font-weight: 600; background: var(--primary); color: #fff; transition: all 0.25s; display: inline-block; position: relative; }
    .cta-section .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 32px rgba(20,112,245,0.40); }

    /* Footer */
    .footer { background: #0f172a; color: rgba(255,255,255,0.70); padding: 48px 0 28px; }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
    .footer h4 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 16px; }
    .footer p, .footer a { font-size: 0.9rem; line-height: 1.8; color: rgba(255,255,255,0.60); }
    .footer a:hover { color: #fff; }
    .footer-links { list-style: none; display: flex; flex-direction: column; gap: 6px; }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 20px; text-align: center; font-size: 0.85rem; color: rgba(255,255,255,0.40); }

    /* News list */
    .news-item { display: flex; gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--border); }
    .news-item:last-child { border-bottom: none; }
    .news-item .news-img { width: 140px; min-height: 90px; object-fit: cover; border-radius: var(--radius-sm); flex-shrink: 0; }
    .news-item .news-meta { font-size: 0.8rem; color: var(--text-light); display: flex; gap: 12px; margin-bottom: 6px; }
    .news-item .news-title { font-size: 1.05rem; font-weight: 600; color: #0f172a; transition: color 0.2s; line-height: 1.5; }
    .news-item .news-title:hover { color: var(--primary); }
    .news-item .news-excerpt { color: var(--text-muted); font-size: 0.9rem; margin-top: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

    /* Tags */
    .tag { display: inline-block; padding: 4px 14px; border-radius: 20px; font-size: 0.75rem; font-weight: 500; background: rgba(20,112,245,0.08); color: var(--primary); transition: all 0.2s; }
    .tag:hover { background: rgba(20,112,245,0.15); }

    /* Category cards */
    .cat-card { position: relative; border-radius: var(--radius); overflow: hidden; background: #fff; box-shadow: var(--shadow-sm); border: 1px solid var(--border); transition: all 0.3s; }
    .cat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
    .cat-card img { width: 100%; height: 220px; object-fit: cover; }
    .cat-card .cat-overlay { position: absolute; bottom: 0; left: 0; right: 0; padding: 20px 24px; background: linear-gradient(transparent, rgba(0,0,0,0.70)); color: #fff; }
    .cat-card .cat-overlay h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 4px; }
    .cat-card .cat-overlay p { font-size: 0.85rem; opacity: 0.85; }

    /* Process / Steps */
    .step-item { display: flex; gap: 20px; align-items: flex-start; padding: 20px 0; border-bottom: 1px solid var(--border); }
    .step-item:last-child { border-bottom: none; }
    .step-num { width: 40px; height: 40px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1.1rem; flex-shrink: 0; }
    .step-content h4 { font-weight: 600; font-size: 1.05rem; margin-bottom: 4px; }
    .step-content p { color: var(--text-muted); font-size: 0.9rem; }

    /* Responsive */
    @media (max-width: 1024px) {
        .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        .stats-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
        .nav-dock { top: 12px; padding: 0 16px; }
        .nav-dock-inner { height: 54px; padding: 0 16px; border-radius: 40px; }
        .nav-links { display: none; position: absolute; top: 62px; left: 16px; right: 16px; background: rgba(255,255,255,0.96); backdrop-filter: blur(16px); border-radius: 20px; box-shadow: var(--shadow-lg); border: 1px solid var(--border); flex-direction: column; padding: 12px; gap: 4px; }
        .nav-links.open { display: flex; }
        .nav-links a { padding: 10px 16px; border-radius: 12px; width: 100%; }
        .nav-toggle { display: block; }
        .nav-cta .btn-nav { padding: 6px 16px; font-size: 0.8rem; }
        .hero h1 { font-size: 2.2rem; }
        .hero p { font-size: 1rem; }
        .hero { min-height: 70vh; padding: 100px 20px 60px; }
        .grid-3 { grid-template-columns: 1fr; gap: 20px; }
        .grid-2 { grid-template-columns: 1fr; gap: 20px; }
        .section { padding: 3rem 0; }
        .section-title { font-size: 1.6rem; }
        .news-item { flex-direction: column; }
        .news-item .news-img { width: 100%; height: 180px; }
        .cta-section { padding: 40px 24px; }
        .cta-section h2 { font-size: 1.6rem; }
        .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
        .stat-number { font-size: 2rem; }
        .footer-grid { grid-template-columns: 1fr; gap: 24px; }
        .hero-actions .btn-primary, .hero-actions .btn-outline { padding: 12px 28px; font-size: 0.9rem; }
    }
    @media (max-width: 520px) {
        .nav-dock-inner { height: 50px; padding: 0 12px; }
        .nav-logo { font-size: 1.05rem; }
        .nav-cta .btn-nav { padding: 5px 14px; font-size: 0.75rem; }
        .hero h1 { font-size: 1.8rem; }
        .hero-badge { font-size: 0.75rem; padding: 4px 14px; }
        .stat-number { font-size: 1.6rem; }
        .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
        .stat-item { padding: 16px; }
    }

/* roulang page: article */
:root {
            --brand-50: #f0f8ff;
            --brand-100: #e0f2fe;
            --brand-200: #bae6fd;
            --brand-300: #7dd3fc;
            --brand-400: #38bdf8;
            --brand-500: #0ea5e9;
            --brand-600: #0284c7;
            --brand-700: #0369a1;
            --brand-800: #075985;
            --brand-900: #0c4a6e;
            --accent-400: #2dd4bf;
            --accent-500: #14b8a6;
            --accent-600: #0d9488;
            --gray-50: #f9fafb;
            --gray-100: #f3f4f6;
            --gray-200: #e5e7eb;
            --gray-300: #d1d5db;
            --gray-400: #9ca3af;
            --gray-500: #6b7280;
            --gray-600: #4b5563;
            --gray-700: #374151;
            --gray-800: #1f2937;
            --gray-900: #111827;
        }
        *,
        *::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: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--gray-800);
            background: #ffffff;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            transition: color 0.2s ease;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }
        .text-brand-400 {
            color: var(--brand-400);
        }
        .text-brand-500 {
            color: var(--brand-500);
        }
        .text-brand-600 {
            color: var(--brand-600);
        }
        .bg-brand-50 {
            background-color: var(--brand-50);
        }
        .bg-brand-500 {
            background-color: var(--brand-500);
        }
        .bg-brand-600 {
            background-color: var(--brand-600);
        }
        .bg-brand-700 {
            background-color: var(--brand-700);
        }
        .border-brand-200 {
            border-color: var(--brand-200);
        }
        .hover\:bg-brand-700:hover {
            background-color: var(--brand-700);
        }
        .hover\:text-brand-400:hover {
            color: var(--brand-400);
        }
        .focus\:ring-brand-400:focus {
            --tw-ring-color: var(--brand-400);
        }
        .transition {
            transition: all 0.3s ease;
        }

        /* ===== Dock 导航 ===== */
        .dock-nav {
            position: fixed;
            top: 18px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-radius: 60px;
            padding: 8px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.5);
            max-width: 720px;
            width: calc(100% - 40px);
            min-height: 56px;
        }
        .dock-logo {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--brand-700);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.01em;
        }
        .dock-logo i {
            color: var(--brand-500);
            font-size: 1.3rem;
        }
        .dock-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }
        .dock-links li a {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--gray-600);
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .dock-links li a:hover {
            background: var(--brand-50);
            color: var(--brand-600);
        }
        .dock-links li a.active {
            background: var(--brand-500);
            color: #ffffff;
            box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
        }
        .dock-cta {
            background: var(--brand-500);
            color: #ffffff;
            border: none;
            padding: 8px 22px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.85rem;
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .dock-cta:hover {
            background: var(--brand-600);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(14, 165, 233, 0.35);
        }
        .dock-cta:active {
            transform: translateY(0);
        }
        .dock-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--gray-700);
            cursor: pointer;
            padding: 4px 8px;
        }
        @media (max-width: 768px) {
            .dock-nav {
                padding: 6px 16px;
                gap: 12px;
                top: 12px;
                min-height: 48px;
                border-radius: 40px;
                width: calc(100% - 24px);
            }
            .dock-logo {
                font-size: 1rem;
            }
            .dock-logo span {
                display: none;
            }
            .dock-links {
                display: none;
                position: absolute;
                top: calc(100% + 12px);
                left: 50%;
                transform: translateX(-50%);
                background: rgba(255, 255, 255, 0.96);
                backdrop-filter: blur(16px);
                border-radius: 24px;
                padding: 12px 16px;
                box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
                flex-direction: column;
                width: max-content;
                min-width: 180px;
                border: 1px solid rgba(255, 255, 255, 0.3);
            }
            .dock-links.open {
                display: flex;
            }
            .dock-links li a {
                padding: 10px 20px;
                width: 100%;
                text-align: center;
            }
            .dock-cta {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .dock-toggle {
                display: block;
            }
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 60px;
            background: linear-gradient(135deg, rgba(12, 74, 110, 0.85), rgba(14, 165, 233, 0.6)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #ffffff;
        }
        .article-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            max-width: 800px;
            margin: 0 auto 16px;
            text-shadow: 0 2px 16px rgba(0, 0, 0, 0.15);
            letter-spacing: -0.02em;
        }
        .article-banner .meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.85);
            flex-wrap: wrap;
        }
        .article-banner .meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.12);
            padding: 4px 16px;
            border-radius: 20px;
            backdrop-filter: blur(4px);
        }
        @media (max-width: 768px) {
            .article-banner {
                min-height: 280px;
                padding: 100px 16px 40px;
            }
            .article-banner h1 {
                font-size: 1.6rem;
            }
            .article-banner .meta {
                gap: 10px;
                font-size: 0.8rem;
            }
            .article-banner .meta span {
                padding: 2px 12px;
            }
        }

        /* ===== 文章正文 ===== */
        .article-body {
            max-width: 780px;
            margin: 0 auto;
            padding: 48px 0 32px;
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--gray-700);
        }
        .article-body p {
            margin-bottom: 1.5em;
        }
        .article-body h2 {
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--gray-900);
            margin: 2em 0 0.75em;
            line-height: 1.3;
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--gray-800);
            margin: 1.5em 0 0.6em;
        }
        .article-body ul,
        .article-body ol {
            margin: 1em 0 1.5em 1.8em;
        }
        .article-body li {
            margin-bottom: 0.4em;
        }
        .article-body blockquote {
            border-left: 4px solid var(--brand-400);
            background: var(--brand-50);
            padding: 16px 24px;
            margin: 1.5em 0;
            border-radius: 0 12px 12px 0;
            color: var(--gray-600);
            font-style: normal;
        }
        .article-body img {
            border-radius: 16px;
            margin: 2em 0;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
        }
        .article-body a {
            color: var(--brand-600);
            border-bottom: 1px solid var(--brand-200);
            font-weight: 500;
        }
        .article-body a:hover {
            color: var(--brand-700);
            border-bottom-color: var(--brand-500);
        }
        .article-body code {
            background: var(--gray-100);
            padding: 2px 10px;
            border-radius: 6px;
            font-size: 0.9em;
            color: var(--gray-800);
        }
        @media (max-width: 768px) {
            .article-body {
                padding: 32px 0 24px;
                font-size: 0.95rem;
            }
            .article-body h2 {
                font-size: 1.35rem;
            }
        }

        /* ===== 标签 ===== */
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
            padding: 24px 0 8px;
            border-top: 1px solid var(--gray-200);
            margin-top: 32px;
        }
        .article-tags .tag {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--brand-50);
            color: var(--brand-600);
            border: 1px solid var(--brand-200);
            transition: all 0.2s ease;
        }
        .article-tags .tag:hover {
            background: var(--brand-500);
            color: #ffffff;
            border-color: var(--brand-500);
        }

        /* ===== 相关推荐卡片 ===== */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .related-card {
            background: #ffffff;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            transition: all 0.35s ease;
            border: 1px solid var(--gray-100);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
        }
        .related-card .img-wrap {
            height: 160px;
            overflow: hidden;
        }
        .related-card .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .img-wrap img {
            transform: scale(1.05);
        }
        .related-card .info {
            padding: 16px 18px 20px;
        }
        .related-card .info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--gray-800);
            margin-bottom: 6px;
            line-height: 1.35;
        }
        .related-card .info p {
            font-size: 0.8rem;
            color: var(--gray-500);
            line-height: 1.5;
        }
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-card .img-wrap {
                height: 180px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--brand-700), var(--brand-500));
            border-radius: 24px;
            padding: 56px 48px;
            text-align: center;
            color: #ffffff;
            margin: 48px 0;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.9;
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #ffffff;
            color: var(--brand-700);
            padding: 14px 40px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            transition: all 0.3s ease;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
            background: var(--gray-50);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 36px 20px;
                border-radius: 16px;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .cta-section .btn-cta {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--gray-900);
            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, 0.06);
        }
        .footer h4 {
            color: #ffffff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: var(--brand-400);
        }
        .footer-bottom {
            text-align: center;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-grid div:first-child {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ===== 内容未找到 ===== */
        .not-found-wrap {
            min-height: 60vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 60px;
            background: var(--gray-50);
        }
        .not-found-wrap .icon-big {
            font-size: 4rem;
            color: var(--gray-300);
            margin-bottom: 20px;
        }
        .not-found-wrap h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--gray-800);
            margin-bottom: 12px;
        }
        .not-found-wrap p {
            color: var(--gray-500);
            margin-bottom: 24px;
            font-size: 1rem;
        }
        .not-found-wrap .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--brand-500);
            color: #ffffff;
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            transition: all 0.25s ease;
        }
        .not-found-wrap .btn-back:hover {
            background: var(--brand-600);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(14, 165, 233, 0.3);
        }

        /* ===== 通用工具 ===== */
        .section-padding {
            padding: 64px 0;
        }
        .section-title {
            text-align: center;
            font-size: 2rem;
            font-weight: 700;
            color: var(--gray-900);
            margin-bottom: 12px;
        }
        .section-subtitle {
            text-align: center;
            font-size: 1.05rem;
            color: var(--gray-500);
            max-width: 600px;
            margin: 0 auto 40px;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.9rem;
                margin-bottom: 28px;
            }
        }

/* roulang page: category1 */
:root {
            --brand-50: #eff6ff;
            --brand-100: #dbeafe;
            --brand-200: #bfdbfe;
            --brand-300: #93c5fd;
            --brand-400: #60a5fa;
            --brand-500: #3b82f6;
            --brand-600: #2563eb;
            --brand-700: #1d4ed8;
            --brand-800: #1e40af;
            --brand-900: #1e3a8a;
            --accent-50: #f0fdf4;
            --accent-100: #dcfce7;
            --accent-200: #bbf7d0;
            --accent-300: #86efac;
            --accent-400: #4ade80;
            --accent-500: #22c55e;
            --accent-600: #16a34a;
            --accent-700: #15803d;
            --accent-800: #166534;
            --accent-900: #14532d;
            --gray-50: #f9fafb;
            --gray-100: #f3f4f6;
            --gray-200: #e5e7eb;
            --gray-300: #d1d5db;
            --gray-400: #9ca3af;
            --gray-500: #6b7280;
            --gray-600: #4b5563;
            --gray-700: #374151;
            --gray-800: #1f2937;
            --gray-900: #111827;
            --radius-sm: 0.375rem;
            --radius-md: 0.75rem;
            --radius-lg: 1.25rem;
            --radius-xl: 1.75rem;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1), 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.12), 0 8px 20px rgba(0, 0, 0, 0.06);
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            background: #ffffff;
            color: var(--gray-800);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 2.5rem;
                padding-right: 2.5rem;
            }
        }

        /* ===== Dock 导航 ===== */
        .dock-nav {
            position: fixed;
            top: 1.25rem;
            left: 50%;
            transform: translateX(-50%);
            z-index: 999;
            background: rgba(255, 255, 255, 0.82);
            backdrop-filter: blur(18px) saturate(1.4);
            -webkit-backdrop-filter: blur(18px) saturate(1.4);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(255, 255, 255, 0.4);
            padding: 0.5rem 1.25rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: calc(100% - 2.5rem);
            max-width: 860px;
            transition: var(--transition);
        }
        .dock-nav .logo {
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--brand-700);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            letter-spacing: -0.02em;
        }
        .dock-nav .logo i {
            color: var(--brand-500);
            font-size: 1.3rem;
        }
        .dock-nav .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
        }
        .dock-nav .nav-links li a {
            display: block;
            padding: 0.45rem 1rem;
            border-radius: var(--radius-lg);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--gray-600);
            transition: var(--transition);
        }
        .dock-nav .nav-links li a:hover {
            background: var(--gray-100);
            color: var(--brand-600);
        }
        .dock-nav .nav-links li a.active {
            background: var(--brand-500);
            color: #ffffff;
            box-shadow: var(--shadow-sm);
        }
        .dock-nav .nav-links li a.active:hover {
            background: var(--brand-600);
        }
        .dock-nav .nav-cta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .dock-nav .nav-cta .search-btn {
            font-size: 1.1rem;
            color: var(--gray-500);
            padding: 0.4rem 0.6rem;
            border-radius: var(--radius-md);
            transition: var(--transition);
            cursor: pointer;
        }
        .dock-nav .nav-cta .search-btn:hover {
            color: var(--brand-500);
            background: var(--gray-100);
        }
        .dock-nav .mobile-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--gray-700);
            cursor: pointer;
            padding: 0.2rem 0.4rem;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .dock-nav .mobile-toggle:hover {
            background: var(--gray-100);
        }
        @media (max-width: 768px) {
            .dock-nav {
                top: 0.75rem;
                padding: 0.4rem 1rem;
                width: calc(100% - 1.5rem);
                border-radius: var(--radius-lg);
            }
            .dock-nav .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 0.75rem);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.96);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                border-radius: var(--radius-lg);
                box-shadow: var(--shadow-lg);
                padding: 0.75rem 0.5rem;
                flex-direction: column;
                gap: 0.25rem;
                border: 1px solid rgba(255, 255, 255, 0.4);
            }
            .dock-nav .nav-links.open {
                display: flex;
            }
            .dock-nav .nav-links li a {
                padding: 0.6rem 1rem;
                font-size: 1rem;
                width: 100%;
                text-align: center;
            }
            .dock-nav .nav-cta .search-btn {
                display: none;
            }
            .dock-nav .mobile-toggle {
                display: block;
            }
        }
        @media (max-width: 520px) {
            .dock-nav .logo {
                font-size: 1rem;
            }
            .dock-nav .logo i {
                font-size: 1.1rem;
            }
            .dock-nav {
                padding: 0.35rem 0.75rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 5rem 0;
        }
        .section-alt {
            background: var(--gray-50);
        }
        .section-dark {
            background: var(--gray-900);
            color: #ffffff;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 0.75rem;
            color: var(--gray-900);
            letter-spacing: -0.02em;
        }
        .section-alt .section-title {
            color: var(--gray-900);
        }
        .section-dark .section-title {
            color: #ffffff;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--gray-500);
            max-width: 620px;
            margin: 0 auto 2.5rem auto;
            text-align: center;
            line-height: 1.7;
        }
        .section-dark .section-subtitle {
            color: var(--gray-300);
        }
        .section-header {
            text-align: center;
            margin-bottom: 3.5rem;
        }
        .section-header .section-title {
            margin-bottom: 0.5rem;
        }
        @media (max-width: 768px) {
            .section {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-subtitle {
                font-size: 1rem;
                margin-bottom: 2rem;
            }
            .section-header {
                margin-bottom: 2.5rem;
            }
        }
        @media (max-width: 520px) {
            .section {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
        }

        /* ===== Hero 分类横幅 ===== */
        .hero-category {
            padding: 8rem 0 4rem 0;
            background: linear-gradient(145deg, var(--gray-900) 0%, #0f1a2e 100%);
            position: relative;
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/coverpic/cover-1.png') center center / cover no-repeat;
            opacity: 0.18;
            pointer-events: none;
        }
        .hero-category .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 46, 0.88) 40%, rgba(15, 26, 46, 0.60) 80%);
            pointer-events: none;
        }
        .hero-category .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .hero-category h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.03em;
            line-height: 1.15;
            margin-bottom: 1rem;
        }
        .hero-category p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 680px;
            margin: 0 auto 1.5rem auto;
            line-height: 1.8;
        }
        .hero-category .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.85rem;
            font-weight: 500;
            padding: 0.35rem 1.25rem;
            border-radius: 999px;
            margin-bottom: 1.25rem;
            letter-spacing: 0.02em;
        }
        @media (max-width: 768px) {
            .hero-category {
                padding: 7rem 0 3rem 0;
                min-height: 300px;
            }
            .hero-category h1 {
                font-size: 2.2rem;
            }
            .hero-category p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .hero-category h1 {
                font-size: 1.7rem;
            }
            .hero-category p {
                font-size: 0.95rem;
            }
        }

        /* ===== 教程卡片网格 ===== */
        .tutorial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.75rem;
        }
        .tutorial-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--gray-100);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .tutorial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--brand-200);
        }
        .tutorial-card .card-img {
            height: 180px;
            background: var(--gray-100);
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .tutorial-card .card-img .card-tag {
            position: absolute;
            top: 0.75rem;
            left: 0.75rem;
            background: var(--brand-500);
            color: #ffffff;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 0.2rem 0.75rem;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }
        .tutorial-card .card-body {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .tutorial-card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--gray-900);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }
        .tutorial-card .card-body p {
            font-size: 0.92rem;
            color: var(--gray-500);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 1rem;
        }
        .tutorial-card .card-body .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--gray-400);
            border-top: 1px solid var(--gray-100);
            padding-top: 0.75rem;
            margin-top: auto;
        }
        .tutorial-card .card-body .card-meta i {
            margin-right: 0.3rem;
        }
        .tutorial-card .card-body .card-link {
            color: var(--brand-500);
            font-weight: 500;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: var(--transition);
        }
        .tutorial-card .card-body .card-link:hover {
            color: var(--brand-700);
            gap: 0.7rem;
        }
        @media (max-width: 520px) {
            .tutorial-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
            .tutorial-card .card-body {
                padding: 1.25rem;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            counter-reset: step-counter;
        }
        .step-item {
            text-align: center;
            padding: 2rem 1.25rem;
            background: #ffffff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--gray-100);
            transition: var(--transition);
            position: relative;
        }
        .step-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .step-item .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--brand-50);
            color: var(--brand-600);
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 1rem;
            transition: var(--transition);
        }
        .step-item:hover .step-number {
            background: var(--brand-500);
            color: #ffffff;
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--gray-800);
            margin-bottom: 0.5rem;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--gray-500);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.25rem;
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .step-item {
                padding: 1.5rem 1rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--gray-200);
            padding: 1.25rem 0;
        }
        .faq-item:first-child {
            border-top: 1px solid var(--gray-200);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 500;
            font-size: 1.05rem;
            color: var(--gray-800);
            transition: var(--transition);
            padding: 0.25rem 0;
        }
        .faq-question:hover {
            color: var(--brand-600);
        }
        .faq-question i {
            font-size: 1.1rem;
            color: var(--gray-400);
            transition: var(--transition);
        }
        .faq-question.open i {
            transform: rotate(180deg);
            color: var(--brand-500);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--gray-500);
            font-size: 0.95rem;
            line-height: 1.7;
            padding: 0 0.5rem;
        }
        .faq-answer.open {
            max-height: 300px;
            padding: 0.75rem 0.5rem 0.25rem 0.5rem;
        }
        @media (max-width: 520px) {
            .faq-question {
                font-size: 0.95rem;
            }
            .faq-answer {
                font-size: 0.9rem;
            }
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(145deg, var(--brand-600) 0%, var(--brand-800) 100%);
            border-radius: var(--radius-xl);
            padding: 3.5rem 3rem;
            text-align: center;
            color: #ffffff;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/coverpic/cover-2.png') center center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-block h3 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
            position: relative;
            z-index: 1;
        }
        .cta-block p {
            font-size: 1.05rem;
            opacity: 0.85;
            max-width: 560px;
            margin: 0 auto 2rem auto;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }
        .cta-block .cta-btn-group {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .cta-block .btn-primary {
            background: #ffffff;
            color: var(--brand-700);
            font-weight: 600;
            padding: 0.75rem 2.25rem;
            border-radius: 999px;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .cta-block .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            background: var(--gray-50);
        }
        .cta-block .btn-outline-light {
            background: transparent;
            color: #ffffff;
            font-weight: 500;
            padding: 0.75rem 2.25rem;
            border-radius: 999px;
            font-size: 1rem;
            border: 1.5px solid rgba(255, 255, 255, 0.4);
            transition: var(--transition);
        }
        .cta-block .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.7);
        }
        @media (max-width: 768px) {
            .cta-block {
                padding: 2.5rem 1.5rem;
            }
            .cta-block h3 {
                font-size: 1.5rem;
            }
            .cta-block p {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .cta-block {
                padding: 2rem 1.25rem;
                border-radius: var(--radius-lg);
            }
            .cta-block h3 {
                font-size: 1.3rem;
            }
            .cta-block .btn-primary,
            .cta-block .btn-outline-light {
                padding: 0.6rem 1.5rem;
                font-size: 0.9rem;
                width: 100%;
            }
        }

        /* ===== 统计数字 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--brand-500);
            line-height: 1.2;
            letter-spacing: -0.03em;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--gray-500);
            margin-top: 0.3rem;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.25rem;
            }
            .stat-item .stat-number {
                font-size: 1.7rem;
            }
        }

        /* ===== 分类特色 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.75rem;
        }
        .feature-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--gray-100);
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--brand-200);
        }
        .feature-card .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--brand-50);
            color: var(--brand-500);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin: 0 auto 1rem auto;
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--brand-500);
            color: #ffffff;
        }
        .feature-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--gray-800);
            margin-bottom: 0.5rem;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--gray-500);
            line-height: 1.6;
        }
        @media (max-width: 520px) {
            .feature-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .feature-card {
                padding: 1.5rem 1rem;
            }
            .feature-card .feature-icon {
                width: 44px;
                height: 44px;
                font-size: 1.2rem;
            }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--gray-900);
            color: rgba(255, 255, 255, 0.7);
            padding: 4rem 0 2rem 0;
            font-size: 0.9rem;
        }
        .footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer h4 {
            color: #ffffff;
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .footer p {
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .footer .footer-links a:hover {
            color: #ffffff;
            transform: translateX(3px);
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        @media (max-width: 1024px) {
            .footer .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
            }
            .footer .footer-grid>div:first-child {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 768px) {
            .footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .footer .footer-grid>div:first-child {
                grid-column: 1 / -1;
            }
            .footer {
                padding: 3rem 0 1.5rem 0;
            }
        }
        @media (max-width: 520px) {
            .footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.75rem;
            }
            .footer .footer-grid>div:first-child {
                grid-column: 1;
            }
            .footer h4 {
                font-size: 1rem;
            }
        }

        /* ===== 工具类 ===== */
        .text-brand {
            color: var(--brand-500);
        }
        .bg-brand-50 {
            background: var(--brand-50);
        }
        .border-brand-200 {
            border-color: var(--brand-200);
        }
        .gap-1 {
            gap: 0.25rem;
        }
        .gap-2 {
            gap: 0.5rem;
        }
        .gap-3 {
            gap: 1rem;
        }
        .gap-4 {
            gap: 1.5rem;
        }
        .gap-5 {
            gap: 2rem;
        }
        .mt-1 {
            margin-top: 0.25rem;
        }
        .mt-2 {
            margin-top: 0.5rem;
        }
        .mt-3 {
            margin-top: 1rem;
        }
        .mt-4 {
            margin-top: 1.5rem;
        }
        .mt-5 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 0.25rem;
        }
        .mb-2 {
            margin-bottom: 0.5rem;
        }
        .mb-3 {
            margin-bottom: 1rem;
        }
        .mb-4 {
            margin-bottom: 1.5rem;
        }
        .mb-5 {
            margin-bottom: 2rem;
        }
        .text-center {
            text-align: center;
        }
        .flex {
            display: flex;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .items-center {
            align-items: center;
        }
        .justify-center {
            justify-content: center;
        }
        .justify-between {
            justify-content: space-between;
        }
        .w-full {
            width: 100%;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }
        .relative {
            position: relative;
        }
        .overflow-hidden {
            overflow: hidden;
        }