/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
        --primary: #0f1b33;
        --primary-light: #1a2d54;
        --primary-lighter: #243b66;
        --accent: #c9a84c;
        --accent-light: #e0c66a;
        --accent-dark: #b8943a;
        --bg: #f5f7fa;
        --bg-card: #ffffff;
        --bg-dark: #0a1628;
        --bg-section: #eef1f6;
        --text: #1a2332;
        --text-secondary: #4a5568;
        --text-light: #8a94a6;
        --text-white: #ffffff;
        --border: #e2e6ed;
        --border-light: #f0f2f5;
        --radius: 12px;
        --radius-sm: 8px;
        --radius-lg: 16px;
        --shadow: 0 4px 20px rgba(0,0,0,0.06);
        --shadow-hover: 0 12px 40px rgba(0,0,0,0.10);
        --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
        --transition: 0.3s ease;
        --nav-height: 60px;
        --max-width: 1200px;
    }

    /* ===== 基础 Reset ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
    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(--text); background: var(--bg); padding-top: 110px;
    }
    a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
    a:hover { color: var(--accent); }
    img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
    ul, ol { list-style: none; }
    button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; background: none; }
    button { cursor: pointer; }
    .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
    .section { padding: 80px 0; }
    .section-title { font-size: 32px; font-weight: 700; color: var(--primary); margin-bottom: 12px; letter-spacing: -0.5px; }
    .section-subtitle { font-size: 18px; color: var(--text-secondary); margin-bottom: 40px; max-width: 640px; line-height: 1.6; }
    .section-divider { width: 60px; height: 4px; background: var(--accent); border-radius: 4px; margin-bottom: 20px; }
    .text-center { text-align: center; }
    .text-center .section-subtitle { margin-left: auto; margin-right: auto; }
    .text-center .section-divider { margin-left: auto; margin-right: auto; }

    /* ===== 导航 ===== */
    .site-header {
        position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
        background: var(--bg-card); border-bottom: 1px solid var(--border);
        box-shadow: 0 2px 16px rgba(0,0,0,0.04);
    }
    .header-top {
        display: flex; align-items: center; justify-content: space-between;
        height: var(--nav-height); padding: 0 24px; max-width: var(--max-width); margin: 0 auto;
    }
    .logo { font-size: 24px; font-weight: 800; color: var(--primary); letter-spacing: -0.5px; }
    .logo span { color: var(--accent); }
    .header-actions { display: flex; align-items: center; gap: 16px; }
    .header-search {
        display: flex; align-items: center; background: var(--bg); border-radius: 24px; padding: 0 16px;
        border: 1px solid var(--border); transition: var(--transition); width: 200px;
    }
    .header-search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(201,168,76,0.15); }
    .header-search input { padding: 8px 0; background: transparent; color: var(--text); width: 100%; font-size: 14px; }
    .header-search input::placeholder { color: var(--text-light); }
    .header-search .search-icon { color: var(--text-light); font-size: 14px; margin-right: 8px; }

    .header-nav {
        background: var(--primary); border-top: 1px solid rgba(255,255,255,0.08);
    }
    .nav-inner {
        display: flex; align-items: center; gap: 4px;
        max-width: var(--max-width); margin: 0 auto; padding: 0 24px; height: 44px;
    }
    .nav-inner a {
        color: rgba(255,255,255,0.8); font-size: 14px; font-weight: 500;
        padding: 6px 20px; border-radius: 6px; transition: var(--transition); letter-spacing: 0.3px;
    }
    .nav-inner a:hover { color: #fff; background: rgba(255,255,255,0.10); }
    .nav-inner a.active { color: #fff; background: var(--accent); font-weight: 600; }
    .nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 20px; padding: 8px 12px; cursor: pointer; }

    /* ===== Hero ===== */
    .hero {
        position: relative; min-height: 480px; display: flex; align-items: center;
        background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
        overflow: hidden;
    }
    .hero-bg {
        position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
        opacity: 0.25; mix-blend-mode: overlay;
    }
    .hero-overlay { position: absolute; inset: 0; background: linear-gradient(to right, rgba(10,22,40,0.85) 0%, rgba(15,27,51,0.60) 100%); }
    .hero .container { position: relative; z-index: 2; padding: 80px 24px; }
    .hero-badge {
        display: inline-block; background: var(--accent); color: var(--primary); font-size: 12px; font-weight: 700;
        padding: 6px 16px; border-radius: 20px; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 20px;
    }
    .hero h1 { font-size: 48px; font-weight: 800; color: var(--text-white); line-height: 1.2; margin-bottom: 16px; letter-spacing: -1px; }
    .hero h1 span { color: var(--accent); }
    .hero p { font-size: 20px; color: rgba(255,255,255,0.8); max-width: 560px; margin-bottom: 32px; line-height: 1.6; }
    .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
    .btn {
        display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px;
        border-radius: 8px; font-weight: 600; font-size: 16px; transition: var(--transition);
        border: 2px solid transparent; letter-spacing: 0.3px;
    }
    .btn-primary { background: var(--accent); color: var(--primary); border-color: var(--accent); }
    .btn-primary:hover { background: var(--accent-light); border-color: var(--accent-light); color: var(--primary); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(201,168,76,0.30); }
    .btn-outline { background: transparent; color: var(--text-white); border-color: rgba(255,255,255,0.4); }
    .btn-outline:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.7); color: #fff; transform: translateY(-2px); }
    .btn-sm { padding: 10px 20px; font-size: 14px; }
    .btn-lg { padding: 18px 40px; font-size: 18px; }

    /* ===== 板块通用 ===== */
    .section-alt { background: var(--bg-section); }
    .section-white { background: var(--bg-card); }
    .card {
        background: var(--bg-card); border-radius: var(--radius); overflow: hidden;
        box-shadow: var(--shadow); transition: var(--transition); border: 1px solid var(--border-light);
    }
    .card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
    .card-img { width: 100%; height: 200px; object-fit: cover; }
    .card-body { padding: 24px; }
    .card-tag {
        display: inline-block; font-size: 12px; font-weight: 600; color: var(--accent-dark);
        background: rgba(201,168,76,0.10); padding: 4px 12px; border-radius: 4px; margin-bottom: 10px;
    }
    .card-title { font-size: 18px; font-weight: 700; color: var(--primary); margin-bottom: 8px; line-height: 1.4; }
    .card-title a { color: inherit; }
    .card-title a:hover { color: var(--accent); }
    .card-text { font-size: 14px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 16px; }
    .card-meta { font-size: 13px; color: var(--text-light); display: flex; align-items: center; gap: 16px; }
    .card-meta span { display: flex; align-items: center; gap: 4px; }

    /* ===== 网格 ===== */
    .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
    .grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 28px; }
    .grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 24px; }

    /* ===== 特色区块 ===== */
    .feature-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 32px; }
    .feature-item {
        background: var(--bg-card); border-radius: var(--radius); padding: 32px 28px;
        box-shadow: var(--shadow); border: 1px solid var(--border-light); transition: var(--transition);
    }
    .feature-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
    .feature-icon { width: 56px; height: 56px; border-radius: 12px; background: rgba(201,168,76,0.10); display: flex; align-items: center; justify-content: center; font-size: 24px; color: var(--accent); margin-bottom: 20px; }
    .feature-item h3 { font-size: 20px; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
    .feature-item p { font-size: 15px; color: var(--text-secondary); line-height: 1.7; }

    /* ===== 统计数字 ===== */
    .stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
    .stat-item { text-align: center; padding: 32px 16px; background: var(--bg-card); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border-light); }
    .stat-number { font-size: 40px; font-weight: 800; color: var(--accent); line-height: 1.2; }
    .stat-label { font-size: 15px; color: var(--text-secondary); margin-top: 8px; }

    /* ===== 资讯列表 ===== */
    .list-card { display: flex; gap: 24px; background: var(--bg-card); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); border: 1px solid var(--border-light); transition: var(--transition); align-items: flex-start; }
    .list-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
    .list-card .list-thumb { width: 160px; height: 110px; border-radius: var(--radius-sm); object-fit: cover; flex-shrink: 0; }
    .list-card .list-body { flex: 1; }
    .list-card .list-title { font-size: 18px; font-weight: 700; color: var(--primary); margin-bottom: 6px; line-height: 1.4; }
    .list-card .list-title a { color: inherit; }
    .list-card .list-title a:hover { color: var(--accent); }
    .list-card .list-excerpt { font-size: 14px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 10px; }
    .list-card .list-meta { font-size: 13px; color: var(--text-light); display: flex; align-items: center; gap: 16px; }

    /* ===== FAQ ===== */
    .faq-list { max-width: 800px; margin: 0 auto; }
    .faq-item { border-bottom: 1px solid var(--border); padding: 20px 0; }
    .faq-question { font-size: 17px; font-weight: 600; color: var(--primary); cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; user-select: none; }
    .faq-question::after { content: '+'; font-size: 22px; color: var(--accent); font-weight: 300; transition: var(--transition); flex-shrink: 0; }
    .faq-question.open::after { content: '−'; }
    .faq-answer { padding-top: 12px; font-size: 15px; color: var(--text-secondary); line-height: 1.7; display: none; }
    .faq-answer.show { display: block; }

    /* ===== CTA ===== */
    .cta-section {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
        text-align: center; padding: 80px 0; position: relative; overflow: hidden;
    }
    .cta-section::before {
        content: ''; position: absolute; inset: 0;
        background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.10; mix-blend-mode: overlay;
    }
    .cta-section .container { position: relative; z-index: 2; }
    .cta-section h2 { font-size: 36px; font-weight: 800; color: var(--text-white); margin-bottom: 12px; }
    .cta-section p { font-size: 18px; color: rgba(255,255,255,0.75); max-width: 560px; margin: 0 auto 32px; }
    .cta-section .btn-primary { background: var(--accent); color: var(--primary); border-color: var(--accent); }
    .cta-section .btn-primary:hover { background: var(--accent-light); border-color: var(--accent-light); box-shadow: 0 8px 32px rgba(201,168,76,0.35); }

    /* ===== 页脚 ===== */
    .site-footer {
        background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 60px 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: 12px; display: block; }
    .footer-brand p { font-size: 14px; line-height: 1.7; max-width: 340px; color: rgba(255,255,255,0.55); }
    .footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; }
    .footer-col a { display: block; font-size: 14px; color: rgba(255,255,255,0.55); padding: 4px 0; transition: var(--transition); }
    .footer-col a:hover { color: var(--accent); padding-left: 4px; }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 14px; color: rgba(255,255,255,0.40); }
    .footer-bottom a { color: rgba(255,255,255,0.55); }
    .footer-bottom a:hover { color: var(--accent); }

    /* ===== 空状态 ===== */
    .empty-state { text-align: center; padding: 48px 24px; color: var(--text-light); font-size: 16px; background: var(--bg-card); border-radius: var(--radius); border: 1px dashed var(--border); }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .grid-4 { grid-template-columns: 1fr 1fr; }
        .footer-grid { grid-template-columns: 1fr 1fr; }
        .hero h1 { font-size: 38px; }
    }
    @media (max-width: 768px) {
        body { padding-top: 100px; }
        .header-search { width: 140px; }
        .header-search input { font-size: 13px; }
        .nav-inner { overflow-x: auto; -webkit-overflow-scrolling: touch; gap: 0; }
        .nav-inner a { white-space: nowrap; padding: 6px 14px; font-size: 13px; }
        .hero { min-height: 380px; }
        .hero h1 { font-size: 30px; }
        .hero p { font-size: 16px; }
        .grid-2, .grid-3, .feature-grid { grid-template-columns: 1fr; }
        .grid-4 { grid-template-columns: 1fr 1fr; gap: 16px; }
        .stats-grid { grid-template-columns: 1fr 1fr; }
        .section { padding: 56px 0; }
        .section-title { font-size: 26px; }
        .list-card { flex-direction: column; }
        .list-card .list-thumb { width: 100%; height: 180px; }
        .footer-grid { grid-template-columns: 1fr; gap: 24px; }
        .footer-bottom { flex-direction: column; text-align: center; }
        .cta-section h2 { font-size: 28px; }
        .stat-number { font-size: 32px; }
    }
    @media (max-width: 520px) {
        body { padding-top: 90px; }
        .header-top { padding: 0 12px; }
        .logo { font-size: 20px; }
        .header-search { width: 100px; }
        .header-search input { font-size: 12px; }
        .nav-inner { padding: 0 12px; }
        .hero h1 { font-size: 24px; }
        .hero p { font-size: 14px; }
        .btn { padding: 10px 20px; font-size: 14px; }
        .grid-4 { grid-template-columns: 1fr; }
        .container { padding: 0 16px; }
        .section-title { font-size: 22px; }
        .card-body { padding: 16px; }
        .feature-item { padding: 24px 20px; }
    }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a9e;
            --primary-dark: #0f1b4a;
            --accent: #e8b830;
            --accent-light: #f0d060;
            --accent-dark: #c9a020;
            --bg-body: #f4f6fb;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0d1a3a;
            --bg-section-alt: #eef1f8;
            --text-body: #1e2a3e;
            --text-light: #5e6e8a;
            --text-muted: #8898b0;
            --text-white: #f0f4ff;
            --border: #dce1ec;
            --border-light: #e9edf4;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26,42,108,0.06);
            --shadow-md: 0 6px 24px rgba(26,42,108,0.08);
            --shadow-lg: 0 12px 40px rgba(26,42,108,0.12);
            --shadow-xl: 0 20px 60px rgba(26,42,108,0.16);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
            --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
            --max-width: 1280px;
            --header-top-h: 56px;
            --nav-h: 48px;
        }

        /* ===== 基础 Reset ===== */
        *, *::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-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover { color: var(--accent-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; border: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--primary-dark); }
        h1 { font-size: 2.25rem; }
        h2 { font-size: 1.75rem; }
        h3 { font-size: 1.35rem; }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1rem; color: var(--text-body); }
        p:last-child { margin-bottom: 0; }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / 杂志频道导航 ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-top-h);
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 2px;
        }
        .logo span { color: var(--accent); }
        .logo:hover { color: var(--primary); opacity: 0.9; }
        .header-actions { display: flex; align-items: center; gap: 16px; }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border-radius: 24px;
            padding: 6px 16px;
            border: 1px solid var(--border-light);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(26,42,108,0.1);
        }
        .header-search .search-icon { font-size: 0.9rem; margin-right: 8px; opacity: 0.5; }
        .header-search input {
            background: transparent;
            border: none;
            padding: 4px 0;
            width: 180px;
            font-size: 0.9rem;
            color: var(--text-body);
        }
        .header-search input::placeholder { color: var(--text-muted); }
        .header-nav {
            background: var(--primary);
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            gap: 4px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: var(--nav-h);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-inner::-webkit-scrollbar { display: none; }
        .nav-inner a {
            color: rgba(255,255,255,0.8);
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            transition: background var(--transition), color var(--transition);
            position: relative;
        }
        .nav-inner a:hover { background: rgba(255,255,255,0.12); color: #fff; }
        .nav-inner a.active {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 600;
        }
        .mobile-toggle { display: none; background: none; font-size: 1.4rem; color: var(--primary); cursor: pointer; padding: 4px; }

        /* ===== 文章详情页 ===== */
        .page-article {
            padding: 48px 0 64px;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 32px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a { color: var(--text-muted); }
        .article-breadcrumb a:hover { color: var(--primary-light); }
        .article-breadcrumb .sep { opacity: 0.4; }
        .article-breadcrumb .current { color: var(--text-body); font-weight: 500; }
        .article-header {
            margin-bottom: 40px;
            text-align: center;
            max-width: 860px;
            margin-left: auto;
            margin-right: auto;
        }
        .article-category {
            display: inline-block;
            background: var(--accent);
            color: var(--primary-dark);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .article-header h1 {
            font-size: 2.5rem;
            margin-bottom: 16px;
            color: var(--primary-dark);
            line-height: 1.25;
        }
        .article-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            color: var(--text-muted);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .article-meta span { display: flex; align-items: center; gap: 6px; }
        .article-meta i { font-size: 0.85rem; opacity: 0.6; }
        .article-featured-image {
            margin: 32px auto 40px;
            max-width: 900px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .article-featured-image img {
            width: 100%;
            height: auto;
            min-height: 320px;
            object-fit: cover;
            display: block;
        }
        .article-featured-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(13,26,58,0.15) 0%, transparent 50%);
            pointer-events: none;
        }
        .article-body {
            max-width: 800px;
            margin: 0 auto;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 48px 56px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-body);
        }
        .article-body .content p {
            margin-bottom: 1.25rem;
        }
        .article-body .content h2, .article-body .content h3 {
            margin-top: 2rem;
            margin-bottom: 0.75rem;
            color: var(--primary-dark);
        }
        .article-body .content ul, .article-body .content ol {
            margin: 1rem 0 1.25rem 1.5rem;
        }
        .article-body .content li {
            margin-bottom: 0.5rem;
            list-style: disc;
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--accent);
            padding: 16px 24px;
            margin: 1.5rem 0;
            background: var(--bg-section-alt);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 1.5rem auto;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body .content a:hover { color: var(--accent-dark); }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
        }
        .article-tags .tag {
            background: var(--bg-section-alt);
            color: var(--text-light);
            padding: 4px 14px;
            border-radius: 16px;
            font-size: 0.8rem;
            transition: background var(--transition), color var(--transition);
        }
        .article-tags .tag:hover { background: var(--primary); color: #fff; }
        .article-nav-links {
            display: flex;
            justify-content: space-between;
            margin-top: 40px;
            gap: 16px;
            flex-wrap: wrap;
        }
        .article-nav-links a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .article-nav-links a:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
            color: var(--primary-light);
        }
        .article-not-found {
            text-align: center;
            padding: 80px 24px;
            max-width: 600px;
            margin: 0 auto;
        }
        .article-not-found .icon { font-size: 4rem; color: var(--text-muted); margin-bottom: 24px; }
        .article-not-found h2 { font-size: 1.8rem; color: var(--primary-dark); margin-bottom: 16px; }
        .article-not-found p { color: var(--text-muted); margin-bottom: 32px; font-size: 1.05rem; }
        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 30px;
            font-weight: 600;
            transition: background var(--transition), transform var(--transition);
        }
        .article-not-found .btn-back:hover { background: var(--primary-light); color: #fff; transform: translateY(-2px); }

        /* ===== 相关文章 ===== */
        .related-section {
            background: var(--bg-section-alt);
            padding: 48px 0;
            margin-top: 32px;
        }
        .related-section .section-title {
            font-size: 1.5rem;
            margin-bottom: 32px;
            text-align: center;
            color: var(--primary-dark);
        }
        .related-section .section-title span { color: var(--accent); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .related-card .card-body {
            padding: 18px 20px 22px;
        }
        .related-card .card-body h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            color: var(--primary-dark);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h3 a { color: inherit; }
        .related-card .card-body h3 a:hover { color: var(--primary-light); }
        .related-card .card-body .card-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 56px 0 0;
        }
        .site-footer .container { padding: 0 24px; }
        .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 { font-size: 1.4rem; color: #fff; margin-bottom: 16px; display: inline-block; }
        .footer-brand .logo span { color: var(--accent); }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.6); line-height: 1.7; max-width: 320px; }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.4);
            gap: 12px;
        }
        .footer-bottom span { display: inline-block; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .article-body { padding: 32px 28px; }
            .article-header h1 { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            .header-top { padding: 0 16px; }
            .header-search input { width: 120px; }
            .nav-inner { padding: 0 16px; gap: 2px; }
            .nav-inner a { padding: 6px 14px; font-size: 0.82rem; }
            .article-header h1 { font-size: 1.6rem; }
            .article-body { padding: 24px 18px; border-radius: var(--radius-md); }
            .article-body .content { font-size: 1rem; }
            .article-meta { gap: 12px; font-size: 0.8rem; flex-wrap: wrap; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-brand p { max-width: 100%; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .page-article { padding: 24px 0 40px; }
            .article-featured-image { margin: 20px auto 28px; }
            .article-featured-image img { min-height: 200px; }
            .article-nav-links { flex-direction: column; }
            .article-nav-links a { justify-content: center; }
        }
        @media (max-width: 520px) {
            .header-top { height: auto; padding: 10px 12px; flex-wrap: wrap; gap: 8px; }
            .logo { font-size: 1.2rem; }
            .header-search { flex: 1; min-width: 140px; }
            .header-search input { width: 100%; }
            .nav-inner { height: auto; padding: 8px 12px; flex-wrap: wrap; gap: 4px; }
            .nav-inner a { padding: 5px 12px; font-size: 0.78rem; }
            .article-header h1 { font-size: 1.35rem; }
            .article-body { padding: 16px 12px; }
            .article-body .content { font-size: 0.95rem; }
            .article-meta { gap: 8px; font-size: 0.75rem; }
            .article-category { font-size: 0.7rem; padding: 3px 12px; }
            .related-card .card-img { height: 140px; }
            .related-section { padding: 32px 0; }
            .section-title { font-size: 1.2rem; }
        }

        /* ===== 工具类 ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .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 */
:root {
            --primary: #1a2a6c;
            --primary-light: #2d4a9e;
            --primary-dark: #0f1a4a;
            --accent: #e74c3c;
            --accent-light: #ff6b5a;
            --accent-dark: #c0392b;
            --gold: #f39c12;
            --gold-light: #f1c40f;
            --bg-dark: #0b0e1a;
            --bg-card: #ffffff;
            --bg-light: #f5f7fc;
            --bg-section: #eef1f7;
            --text-dark: #1a1a2e;
            --text-body: #2c3e50;
            --text-muted: #7f8c9b;
            --text-light: #ffffff;
            --border-color: #e0e4ec;
            --border-light: #eef1f7;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 4px 20px rgba(26, 42, 108, 0.1);
            --shadow-lg: 0 12px 40px rgba(26, 42, 108, 0.15);
            --shadow-xl: 0 24px 60px rgba(26, 42, 108, 0.2);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1280px;
            --header-top-height: 64px;
            --nav-height: 52px;
        }

        *,
        *::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-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
            min-height: 100vh;
            padding-top: calc(var(--header-top-height) + var(--nav-height));
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }

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

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            body {
                padding-top: calc(var(--header-top-height) + var(--nav-height) + 4px);
                font-size: 15px;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--bg-dark);
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.4);
        }

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

        .logo {
            font-size: 24px;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 2px;
        }
        .logo span {
            color: var(--accent);
        }
        .logo:hover {
            color: var(--text-light);
            opacity: 0.9;
        }

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

        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 40px;
            padding: 6px 16px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .header-search:focus-within {
            background: rgba(255, 255, 255, 0.14);
            border-color: var(--accent);
        }
        .header-search .search-icon {
            font-size: 18px;
            margin-right: 8px;
            color: var(--text-muted);
        }
        .header-search input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-light);
            font-size: 14px;
            width: 180px;
            padding: 4px 0;
        }
        .header-search input::placeholder {
            color: rgba(255, 255, 255, 0.35);
        }

        @media (max-width: 640px) {
            .header-search input {
                width: 100px;
            }
            .header-top {
                padding: 0 12px;
            }
            .logo {
                font-size: 20px;
            }
        }

        /* ===== Navigation ===== */
        .header-nav {
            background: rgba(15, 18, 42, 0.95);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            height: var(--nav-height);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .header-nav::-webkit-scrollbar {
            display: none;
        }

        .nav-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-inner a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 20px;
            border-radius: 40px;
            transition: var(--transition);
            white-space: nowrap;
            letter-spacing: 0.3px;
            position: relative;
        }
        .nav-inner a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-inner a.active {
            color: var(--text-light);
            background: var(--accent);
            font-weight: 600;
        }
        .nav-inner a.active:hover {
            background: var(--accent-light);
        }

        @media (max-width: 768px) {
            .nav-inner {
                padding: 0 12px;
                gap: 2px;
            }
            .nav-inner a {
                font-size: 14px;
                padding: 6px 14px;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 100px;
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center 30%;
            background-blend-mode: overlay;
            overflow: hidden;
            margin-top: 0;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 14, 26, 0.92) 0%, rgba(26, 42, 108, 0.7) 50%, rgba(11, 14, 26, 0.85) 100%);
            z-index: 1;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-light), transparent);
            z-index: 2;
        }
        .page-banner .container {
            position: relative;
            z-index: 3;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.6);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb span {
            color: rgba(255, 255, 255, 0.4);
        }

        .page-banner h1 {
            font-size: 44px;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .page-banner h1 em {
            font-style: normal;
            color: var(--accent);
        }
        .page-banner p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.7);
            max-width: 680px;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 56px 0 72px;
            }
            .page-banner h1 {
                font-size: 30px;
            }
            .page-banner p {
                font-size: 16px;
            }
        }

        /* ===== Sections ===== */
        .section {
            padding: 72px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.3px;
            margin-bottom: 12px;
        }
        .section-header h2 span {
            color: var(--accent);
        }
        .section-header p {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }

        .section-subtitle {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 8px;
            background: rgba(231, 76, 60, 0.08);
            padding: 4px 16px;
            border-radius: 40px;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .section-header p {
                font-size: 15px;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ===== Category Grid ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border-color);
        }

        .category-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .category-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .category-card:hover .card-img img {
            transform: scale(1.06);
        }
        .category-card .card-img .tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 40px;
            letter-spacing: 0.5px;
        }

        .category-card .card-body {
            padding: 24px 24px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
            line-height: 1.3;
        }
        .category-card .card-body h3 a {
            color: var(--text-dark);
        }
        .category-card .card-body h3 a:hover {
            color: var(--accent);
        }
        .category-card .card-body p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .category-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 16px;
            margin-top: auto;
        }
        .category-card .card-meta .badge {
            background: rgba(26, 42, 108, 0.06);
            padding: 2px 12px;
            border-radius: 40px;
            font-size: 12px;
            color: var(--primary);
        }

        @media (max-width: 1024px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 640px) {
            .category-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .category-card .card-body {
                padding: 18px 18px 22px;
            }
            .category-card .card-img {
                height: 180px;
            }
        }

        /* ===== Featured List ===== */
        .featured-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .featured-item {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            align-items: flex-start;
        }
        .featured-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .featured-item .item-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            opacity: 0.15;
            line-height: 1;
            min-width: 40px;
            font-style: italic;
        }
        .featured-item .item-content {
            flex: 1;
        }
        .featured-item .item-content h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .featured-item .item-content h4 a {
            color: var(--text-dark);
        }
        .featured-item .item-content h4 a:hover {
            color: var(--accent);
        }
        .featured-item .item-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 8px;
        }
        .featured-item .item-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .featured-item .item-tags span {
            font-size: 12px;
            color: var(--primary-light);
            background: rgba(26, 42, 108, 0.05);
            padding: 2px 12px;
            border-radius: 40px;
        }

        @media (max-width: 768px) {
            .featured-list {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .featured-item {
                padding: 16px;
                gap: 14px;
            }
            .featured-item .item-num {
                font-size: 22px;
                min-width: 30px;
            }
        }

        /* ===== Stats / Numbers ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-item .stat-number {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item .stat-number em {
            font-style: normal;
            color: var(--accent);
        }
        .stat-item .stat-label {
            font-size: 15px;
            color: var(--text-muted);
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item {
                padding: 24px 16px;
            }
            .stat-item .stat-number {
                font-size: 32px;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
        }

        /* ===== FAQ ===== */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            padding: 20px 24px;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-q {
            font-weight: 600;
            color: var(--text-dark);
            font-size: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .faq-item .faq-q::before {
            content: 'Q';
            font-weight: 800;
            color: var(--accent);
            font-size: 14px;
            background: rgba(231, 76, 60, 0.08);
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            flex-shrink: 0;
        }
        .faq-item .faq-a {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-top: 12px;
            padding-left: 38px;
        }

        @media (max-width: 768px) {
            .faq-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .faq-item {
                padding: 16px 18px;
            }
            .faq-item .faq-a {
                padding-left: 0;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 14, 26, 0.9) 0%, rgba(26, 42, 108, 0.75) 100%);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.7);
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--accent-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(231, 76, 60, 0.35);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-light);
            border: 2px solid rgba(255, 255, 255, 0.3);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--text-light);
            background: rgba(231, 76, 60, 0.1);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section p {
                font-size: 16px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 15px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }
        .site-footer .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .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-brand .logo {
            font-size: 22px;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
            flex-wrap: wrap;
            gap: 8px;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .site-footer {
                padding: 40px 0 0;
            }
        }

        /* ===== Additional Utilities ===== */
        .text-center {
            text-align: center;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-8 {
            gap: 8px;
        }

        /* tags cloud */
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 12px;
        }
        .tags-cloud a {
            display: inline-block;
            font-size: 14px;
            padding: 6px 18px;
            border-radius: 40px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            color: var(--text-muted);
            transition: var(--transition);
        }
        .tags-cloud a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* responsive table */
        .responsive-table {
            width: 100%;
            overflow-x: auto;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
        }
        .responsive-table table {
            width: 100%;
            border-collapse: collapse;
            font-size: 15px;
            background: var(--bg-card);
        }
        .responsive-table th {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            padding: 14px 18px;
            text-align: left;
            font-size: 14px;
        }
        .responsive-table td {
            padding: 12px 18px;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-body);
        }
        .responsive-table tr:hover td {
            background: rgba(26, 42, 108, 0.02);
        }

        /* loading shimmer for placeholder */
        .shimmer {
            background: linear-gradient(90deg, var(--border-light) 25%, #f0f2f7 50%, var(--border-light) 75%);
            background-size: 200% 100%;
            animation: shimmer 1.6s infinite;
            border-radius: var(--radius-sm);
        }
        @keyframes shimmer {
            0% {
                background-position: -200% 0;
            }
            100% {
                background-position: 200% 0;
            }
        }

@keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-6px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        /* 滚动条美化 */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-light);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }
        /* 选中样式 */
        ::selection {
            background: var(--primary);
            color: #fff;
        }
        /* 打印优化 */
        @media print {
            .site-header,
            .page-banner::after,
            .cta-section,
            .site-footer {
                display: none;
            }
            body {
                padding-top: 0;
                background: #fff;
            }
            .page-banner {
                padding: 40px 0;
                background: #f5f5f5 !important;
                color: #000;
            }
            .page-banner h1 {
                color: #000;
            }
            .page-banner p {
                color: #333;
            }
        }