/* roulang page: index */
:root {
            --primary: #0b1f3a;
            --primary-light: #16345c;
            --primary-dark: #071527;
            --accent: #f0a500;
            --accent-light: #ffc247;
            --accent-dark: #d18e00;
            --bg: #f4f6fa;
            --bg-deep: #0e223c;
            --card-bg: #ffffff;
            --text: #182a44;
            --text-light: #5a6b8c;
            --text-muted: #8a97b3;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 20px rgba(11, 31, 58, 0.08);
            --shadow-lg: 0 12px 40px rgba(11, 31, 58, 0.14);
            --transition: all 0.3s ease;
            --space: 80px;
            --space-sm: 50px;
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; line-height: inherit; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .section { padding: var(--space) 0; }
        .section-head { text-align: center; margin-bottom: 45px; }
        .section-head h2 { font-size: 34px; font-weight: 800; color: var(--primary); margin-bottom: 12px; letter-spacing: -0.5px; }
        .section-head p { font-size: 16px; color: var(--text-light); max-width: 640px; margin: 0 auto; }
        .section-tag { display: inline-block; background: rgba(240, 165, 0, 0.12); color: var(--accent-dark); font-size: 13px; font-weight: 600; padding: 5px 16px; border-radius: 50px; margin-bottom: 14px; letter-spacing: 1px; }
        .text-center { text-align: center; }

        /* ===== 悬浮胶囊导航 ===== */
        .site-header { position: sticky; top: 16px; z-index: 1000; padding: 0 24px; }
        .nav-capsule {
            max-width: 1180px; margin: 0 auto; background: rgba(11, 31, 58, 0.92);
            backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
            border-radius: 60px; padding: 14px 32px; display: flex; align-items: center;
            justify-content: space-between; box-shadow: 0 8px 40px rgba(11, 31, 58, 0.35);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .brand-logo { font-size: 20px; font-weight: 800; color: #fff; letter-spacing: 0.5px; display: flex; align-items: center; gap: 10px; }
        .brand-logo i { color: var(--accent); font-size: 22px; }
        .nav-links { display: flex; align-items: center; gap: 4px; }
        .nav-links a {
            color: rgba(255, 255, 255, 0.85); font-size: 15px; font-weight: 500;
            padding: 8px 20px; border-radius: 40px; transition: var(--transition);
        }
        .nav-links a:hover { background: rgba(255, 255, 255, 0.12); color: #fff; }
        .nav-links a.active { background: var(--accent); color: var(--primary-dark); font-weight: 700; }
        .nav-cta { display: inline-flex; align-items: center; gap: 8px; background: var(--accent); color: var(--primary-dark); font-weight: 700; font-size: 14px; padding: 9px 24px; border-radius: 50px; transition: var(--transition); }
        .nav-cta:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 6px 25px rgba(240, 165, 0, 0.4); }
        .nav-toggle { display: none; background: transparent; border: none; color: #fff; font-size: 24px; cursor: pointer; padding: 4px; }

        /* ===== Hero首屏 ===== */
        .hero {
            position: relative; min-height: 620px; display: flex; align-items: center;
            background: linear-gradient(135deg, rgba(7, 21, 39, 0.92) 0%, rgba(11, 31, 58, 0.78) 50%, rgba(22, 52, 92, 0.85) 100%),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 140px 0 90px; margin-top: -70px; overflow: hidden;
        }
        .hero::before { content: ''; position: absolute; bottom: -80px; right: -80px; width: 400px; height: 400px; background: radial-gradient(circle, rgba(240, 165, 0, 0.2), transparent 70%); border-radius: 50%; }
        .hero-content { position: relative; z-index: 2; max-width: 750px; }
        .hero-tag { display: inline-flex; align-items: center; gap: 8px; background: rgba(255, 255, 255, 0.15); border: 1px solid rgba(255, 255, 255, 0.25); color: #fff; font-size: 13px; font-weight: 600; padding: 6px 20px; border-radius: 50px; margin-bottom: 22px; }
        .hero-tag i { color: var(--accent-light); }
        .hero h1 { font-size: 56px; font-weight: 900; color: #fff; line-height: 1.15; letter-spacing: -1px; margin-bottom: 18px; }
        .hero h1 span { color: var(--accent-light); }
        .hero p { font-size: 18px; color: rgba(255, 255, 255, 0.9); line-height: 1.8; margin-bottom: 30px; max-width: 600px; }
        .hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
        .btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 36px; border-radius: 50px; font-weight: 700; font-size: 15px; transition: var(--transition); cursor: pointer; border: none; }
        .btn-primary { background: var(--accent); color: var(--primary-dark); box-shadow: 0 8px 30px rgba(240, 165, 0, 0.4); }
        .btn-primary:hover { background: var(--accent-light); transform: translateY(-3px); box-shadow: 0 12px 40px rgba(240, 165, 0, 0.5); }
        .btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255, 255, 255, 0.5); }
        .btn-outline:hover { border-color: var(--accent-light); color: var(--accent-light); transform: translateY(-3px); }
        .hero-stats { display: flex; gap: 40px; margin-top: 50px; padding-top: 30px; border-top: 1px solid rgba(255, 255, 255, 0.15); }
        .hero-stat h3 { font-size: 30px; font-weight: 800; color: #fff; margin-bottom: 2px; }
        .hero-stat h3 i { color: var(--accent-light); }
        .hero-stat p { font-size: 14px; color: rgba(255, 255, 255, 0.7); }

        /* ===== 核心优势 ===== */
        .features { background: var(--bg); }
        .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
        .feature-card {
            background: var(--card-bg); border-radius: var(--radius); padding: 36px 28px;
            box-shadow: var(--shadow); border: 1px solid var(--border);
            transition: var(--transition); position: relative; overflow: hidden;
        }
        .feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
        .feature-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: linear-gradient(90deg, var(--accent), var(--accent-light)); }
        .feature-icon { width: 68px; height: 68px; border-radius: 20px; display: flex; align-items: center; justify-content: center; font-size: 28px; margin-bottom: 20px; background: linear-gradient(135deg, rgba(240, 165, 0, 0.15), rgba(240, 165, 0, 0.05)); color: var(--accent-dark); }
        .feature-card h3 { font-size: 20px; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
        .feature-card p { font-size: 15px; color: var(--text-light); line-height: 1.7; }

        /* ===== 分类卡片 ===== */
        .category-section { background: #fff; }
        .category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
        .category-card {
            border-radius: var(--radius); overflow: hidden; background: var(--card-bg);
            box-shadow: var(--shadow); border: 1px solid var(--border);
            transition: var(--transition); display: flex; flex-direction: column;
        }
        .category-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
        .category-card .card-img { position: relative; overflow: hidden; height: 220px; }
        .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(1.05); }
        .category-card .card-img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(11, 31, 58, 0.5), transparent 60%); }
        .category-card .card-body { padding: 28px; flex: 1; display: flex; flex-direction: column; }
        .category-card .card-body h3 { font-size: 20px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
        .category-card .card-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; margin-bottom: 16px; flex: 1; }
        .category-card .card-link { color: var(--accent-dark); font-weight: 600; font-size: 14px; display: inline-flex; align-items: center; gap: 8px; }
        .category-card .card-link:hover { gap: 14px; }

        /* ===== 最新发布列表 ===== */
        .latest-section { background: var(--bg); }
        .news-list { max-width: 860px; margin: 0 auto; }
        .news-card {
            display: flex; align-items: center; gap: 24px; background: var(--card-bg);
            padding: 24px 28px; border-radius: var(--radius); margin-bottom: 16px;
            box-shadow: var(--shadow); border: 1px solid var(--border); transition: var(--transition);
        }
        .news-card:hover { box-shadow: var(--shadow-lg); transform: translateX(6px); border-color: rgba(240, 165, 0, 0.4); }
        .news-card .news-icon { width: 48px; height: 48px; flex-shrink: 0; border-radius: 14px; background: rgba(240, 165, 0, 0.12); display: flex; align-items: center; justify-content: center; color: var(--accent-dark); font-size: 20px; }
        .news-card .news-info { flex: 1; }
        .news-card .news-info h3 { font-size: 17px; font-weight: 600; color: var(--text); margin-bottom: 4px; line-height: 1.4; }
        .news-card .news-info h3:hover { color: var(--primary); }
        .news-card .news-info p { font-size: 14px; color: var(--text-light); margin-bottom: 6px; }
        .news-card .news-meta { display: flex; gap: 16px; font-size: 13px; color: var(--text-muted); }
        .news-card .news-meta i { margin-right: 4px; }
        .news-empty { text-align: center; padding: 60px 20px; background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow); color: var(--text-light); font-size: 16px; }

        /* ===== 登录流程 ===== */
        .process-section { background: linear-gradient(135deg, var(--bg-deep), var(--primary)); padding: var(--space) 0; color: #fff; }
        .process-section .section-head h2 { color: #fff; }
        .process-section .section-head p { color: rgba(255, 255, 255, 0.7); }
        .process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; position: relative; }
        .process-step { text-align: center; padding: 30px 24px; position: relative; }
        .process-step .step-num { width: 52px; height: 52px; border-radius: 50%; background: var(--accent); color: var(--primary-dark); font-size: 20px; font-weight: 800; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; box-shadow: 0 0 0 6px rgba(240, 165, 0, 0.25); }
        .process-step h3 { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 8px; }
        .process-step p { font-size: 14px; color: rgba(255, 255, 255, 0.7); line-height: 1.6; }

        /* ===== 平台特色图文 ===== */
        .showcase-section { background: #fff; }
        .showcase-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
        .showcase-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); position: relative; }
        .showcase-img img { width: 100%; height: 380px; object-fit: cover; }
        .showcase-img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(45deg, rgba(11, 31, 58, 0.1), transparent); }
        .showcase-text h2 { font-size: 32px; font-weight: 800; color: var(--primary); margin-bottom: 16px; line-height: 1.3; }
        .showcase-text p { font-size: 16px; color: var(--text-light); margin-bottom: 24px; }
        .showcase-list { margin-bottom: 24px; }
        .showcase-list li { display: flex; align-items: center; gap: 12px; padding: 10px 0; font-size: 15px; color: var(--text); }
        .showcase-list li i { color: var(--accent-dark); width: 24px; text-align: center; font-size: 18px; }

        /* ===== FAQ ===== */
        .faq-section { background: var(--bg); }
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--card-bg); border-radius: var(--radius-sm); margin-bottom: 14px;
            border: 1px solid var(--border); overflow: hidden; transition: var(--transition);
        }
        .faq-item:hover { border-color: rgba(240, 165, 0, 0.4); box-shadow: var(--shadow); }
        .faq-question { padding: 20px 28px; font-size: 16px; font-weight: 600; color: var(--primary); display: flex; justify-content: space-between; align-items: center; cursor: pointer; }
        .faq-question::after { content: '+'; font-size: 24px; color: var(--accent-dark); font-weight: 400; transition: transform 0.3s; }
        .faq-item.open .faq-question::after { transform: rotate(45deg); }
        .faq-answer { padding: 0 28px 20px; font-size: 14px; color: var(--text-light); line-height: 1.8; display: none; }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section { background: linear-gradient(135deg, var(--primary), var(--primary-light)); padding: 70px 0; text-align: center; position: relative; overflow: hidden; }
        .cta-section::before { content: ''; position: absolute; top: -60px; right: -60px; width: 300px; height: 300px; background: radial-gradient(circle, rgba(240, 165, 0, 0.3), transparent 70%); border-radius: 50%; }
        .cta-section::after { content: ''; position: absolute; bottom: -80px; left: -80px; width: 250px; height: 250px; background: radial-gradient(circle, rgba(255, 255, 255, 0.1), transparent 60%); border-radius: 50%; }
        .cta-inner { position: relative; z-index: 2; }
        .cta-inner h2 { font-size: 36px; font-weight: 800; color: #fff; margin-bottom: 14px; }
        .cta-inner p { font-size: 17px; color: rgba(255, 255, 255, 0.8); margin-bottom: 30px; max-width: 500px; margin-left: auto; margin-right: auto; }

        /* ===== 页脚 ===== */
        .site-footer { background: var(--primary-dark); color: rgba(255, 255, 255, 0.75); padding: 60px 0 0; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 50px; padding-bottom: 40px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
        .footer-brand .brand-logo { margin-bottom: 14px; }
        .footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255, 255, 255, 0.6); }
        .footer-col h4 { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 18px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul a { font-size: 14px; color: rgba(255, 255, 255, 0.6); transition: var(--transition); }
        .footer-col ul a:hover { color: var(--accent-light); padding-left: 6px; }
        .footer-col ul a i { margin-right: 8px; font-size: 12px; }
        .footer-bottom { padding: 20px 0; text-align: center; font-size: 13px; color: rgba(255, 255, 255, 0.5); }

        /* ===== 响应式 ===== */
        @media (max-width: 1023px) {
            .hero { padding: 130px 0 70px; }
            .hero h1 { font-size: 42px; }
            .feature-grid, .category-grid { grid-template-columns: repeat(2, 1fr); }
            .process-steps { grid-template-columns: repeat(2, 1fr); }
            .showcase-grid { grid-template-columns: 1fr; gap: 40px; }
            .showcase-img img { height: 300px; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 767px) {
            .section { padding: 50px 0; }
            .container { padding: 0 16px; }
            .site-header { padding: 0 12px; }
            .nav-capsule { padding: 12px 18px; border-radius: 40px; }
            .nav-links { position: fixed; top: 80px; left: 16px; right: 16px; background: var(--primary); border-radius: 20px; padding: 16px; flex-direction: column; gap: 4px; display: none; box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3); }
            .nav-links.open { display: flex; }
            .nav-links a { display: block; width: 100%; text-align: left; padding: 12px 20px; border-radius: 12px; }
            .nav-toggle { display: block; }
            .nav-cta { display: none; }
            .hero { min-height: 500px; padding: 110px 0 60px; }
            .hero h1 { font-size: 32px; }
            .hero p { font-size: 16px; }
            .hero-stats { gap: 20px; flex-wrap: wrap; }
            .feature-grid, .category-grid { grid-template-columns: 1fr; }
            .process-steps { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .news-card { flex-direction: column; align-items: flex-start; gap: 14px; padding: 20px; }
            .section-head h2 { font-size: 26px; }
            .btn { width: 100%; justify-content: center; }
            .hero-btns { flex-direction: column; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 28px; }
            .hero-stat h3 { font-size: 22px; }
            .showcase-img img { height: 220px; }
            .cta-inner h2 { font-size: 26px; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #161B3D;
            --primary-light: #2A2F5B;
            --primary-dark: #0E1130;
            --accent: #4F7DF9;
            --accent-hover: #3A63E0;
            --gold: #F0C15A;
            --gold-light: #FDE8C8;
            --bg: #F2F4FA;
            --bg-white: #FFFFFF;
            --text: #1B1F3B;
            --text-weak: #6B7280;
            --text-mute: #9AA3B5;
            --border: #E5E9F2;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 6px 24px rgba(22, 27, 61, 0.06), 0 2px 8px rgba(22, 27, 61, 0.04);
            --shadow-hover: 0 12px 32px rgba(22, 27, 61, 0.12), 0 4px 12px rgba(22, 27, 61, 0.06);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        /* ===== 基础重置 ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

        html { scroll-behavior: smooth; }

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

        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; }
        a:hover { transition: color 0.3s; }
        ul { list-style: none; }
        button { border: none; background: none; cursor: pointer; font-family: inherit; }
        input, select, textarea { font-family: inherit; }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.2;
            transition: all var(--transition);
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn i { font-size: 14px; }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(79, 125, 249, 0.3);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(79, 125, 249, 0.4);
            color: #fff;
        }
        .btn-primary:active { transform: translateY(0); }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(22, 27, 61, 0.16);
        }

        .btn-gold {
            background: var(--gold);
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(240, 193, 90, 0.36);
        }
        .btn-gold:hover {
            background: #E2AF48;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(240, 193, 90, 0.44);
            color: var(--primary);
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
        }
        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.14);
            color: var(--accent);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(79, 125, 249, 0.5);
            outline-offset: 2px;
        }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            background: var(--gold-light);
            color: #B8860B;
            letter-spacing: 0.02em;
        }
        .badge-blue {
            background: rgba(79, 125, 249, 0.12);
            color: var(--accent);
        }
        .badge-green {
            background: rgba(0, 194, 168, 0.12);
            color: #00A889;
        }

        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 500;
            background: #F1F3F9;
            color: var(--text-weak);
            transition: all var(--transition);
        }
        .tag:hover { background: var(--accent); color: #fff; }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 16px;
            z-index: 100;
            padding: 0 20px;
        }

        .nav-capsule {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: 999px;
            padding: 12px 16px 12px 28px;
            box-shadow: 0 8px 32px rgba(22, 27, 61, 0.10);
            border: 1px solid rgba(255, 255, 255, 0.6);
            transition: box-shadow var(--transition);
        }

        .nav-capsule:hover {
            box-shadow: 0 12px 40px rgba(22, 27, 61, 0.14);
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        .brand-logo i {
            color: var(--gold);
            font-size: 20px;
            background: linear-gradient(135deg, #F0C15A, #FFD700);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-links li a {
            display: inline-block;
            padding: 10px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            transition: all var(--transition);
            position: relative;
        }
        .nav-links li a:hover {
            background: #F1F3F9;
            color: var(--accent);
        }
        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(22, 27, 61, 0.22);
        }
        .nav-links li a:focus-visible {
            outline: 3px solid rgba(79, 125, 249, 0.4);
            outline-offset: 2px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 999px;
            background: var(--accent);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition);
            box-shadow: 0 4px 12px rgba(79, 125, 249, 0.3);
        }
        .nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(79, 125, 249, 0.4);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: #F1F3F9;
            color: var(--primary);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
        }
        .nav-toggle:hover { background: #E5E9F2; }

        /* ===== 页面 Hero ===== */
        .page-hero {
            position: relative;
            padding: 140px 0 100px;
            background-size: cover;
            background-position: center;
            background-color: var(--primary-dark);
            overflow: hidden;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(14, 17, 48, 0.92) 0%, rgba(22, 27, 61, 0.76) 50%, rgba(79, 125, 249, 0.35) 100%);
        }
        .page-hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }
        .page-hero-content .badge {
            margin-bottom: 20px;
            background: rgba(240, 193, 90, 0.18);
            border: 1px solid rgba(240, 193, 90, 0.3);
            color: var(--gold);
        }
        .page-hero-content h1 {
            font-size: 44px;
            line-height: 1.2;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
        }
        .page-hero-content p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.8;
            margin-bottom: 36px;
            max-width: 580px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stat .num {
            font-size: 30px;
            font-weight: 800;
            color: var(--gold);
            line-height: 1.2;
        }
        .hero-stat .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 88px 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-tight {
            padding: 64px 0;
        }

        .section-header {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 56px;
        }
        .section-header .badge {
            margin-bottom: 14px;
        }
        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .section-header h2 span {
            color: var(--accent);
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        .section-header-left {
            text-align: left;
            max-width: 720px;
            margin: 0 0 48px;
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            gap: 32px;
            flex-wrap: wrap;
        }
        .section-header-left h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.01em;
            margin-bottom: 10px;
        }
        .section-header-left p {
            color: var(--text-weak);
            max-width: 560px;
        }

        /* ===== 登录流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 36px 28px 32px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(255, 255, 255, 0.8);
            position: relative;
            transition: all var(--transition);
            overflow: hidden;
        }
        .step-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--gold));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .step-card:hover::before { opacity: 1; }

        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(79, 125, 249, 0.1);
            color: var(--accent);
            font-size: 22px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            transition: all var(--transition);
        }
        .step-card:hover .step-num {
            background: var(--accent);
            color: #fff;
        }
        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* ===== 登录方式对比 ===== */
        .methods-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .method-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .method-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .method-card.featured {
            border: 2px solid var(--accent);
            position: relative;
        }
        .method-card.featured::after {
            content: "推荐";
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 999px;
        }

        .method-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(79, 125, 249, 0.12), rgba(240, 193, 90, 0.12));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent);
            margin-bottom: 24px;
        }
        .method-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .method-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 20px;
        }
        .method-feature-list {
            margin-top: 4px;
        }
        .method-feature-list li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text);
            padding: 4px 0;
        }
        .method-feature-list li i {
            color: var(--accent);
            font-size: 12px;
        }

        /* ===== 常见问题卡片 ===== */
        .issues-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .issue-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-card);
            border-left: 4px solid var(--accent);
            transition: all var(--transition);
        }
        .issue-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
        }
        .issue-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .issue-card h3 i {
            color: var(--accent);
            font-size: 20px;
            flex-shrink: 0;
        }
        .issue-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.8;
        }
        .issue-card .issue-tip {
            margin-top: 14px;
            padding: 10px 16px;
            background: #F8FAFF;
            border-radius: var(--radius-sm);
            font-size: 13px;
            color: var(--text-weak);
            border: 1px dashed var(--border);
        }

        /* ===== 安全提示深色区 ===== */
        .tips-section {
            background-color: var(--primary-dark);
            background-image: linear-gradient(135deg, rgba(14, 17, 48, 0.95) 0%, rgba(22, 27, 61, 0.92) 60%, rgba(79, 125, 249, 0.3) 100%);
            position: relative;
            overflow: hidden;
        }
        .tips-section .section-header h2 {
            color: #fff;
        }
        .tips-section .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }

        .tips-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .tip-card {
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.13);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
            backdrop-filter: blur(8px);
        }
        .tip-card:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-4px);
        }
        .tip-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background: rgba(240, 193, 90, 0.16);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--gold);
        }
        .tip-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .tip-card p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-accordion-item {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            margin-bottom: 16px;
            overflow: hidden;
            transition: box-shadow var(--transition);
            border: 1px solid transparent;
        }
        .faq-accordion-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-accordion-item.active {
            border-color: rgba(79, 125, 249, 0.3);
        }
        .faq-q {
            padding: 22px 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            transition: color var(--transition);
        }
        .faq-q:hover { color: var(--accent); }
        .faq-q i {
            font-size: 14px;
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-accordion-item.active .faq-q i {
            transform: rotate(180deg);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 28px;
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.8;
            border-top: 0 solid transparent;
        }
        .faq-accordion-item.active .faq-a {
            max-height: 300px;
            padding: 0 28px 22px;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            background-image: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, #2C3D7E 100%);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(79, 125, 249, 0.2);
            top: -200px;
            right: -100px;
        }
        .cta-section::after {
            content: "";
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(240, 193, 90, 0.12);
            bottom: -100px;
            left: -50px;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .cta-content p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 72px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .brand-logo {
            color: #fff;
            font-size: 20px;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--gold);
            padding-left: 4px;
        }
        .footer-col ul li a i {
            font-size: 12px;
            color: var(--gold);
        }
        .footer-bottom {
            padding-top: 28px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover { color: var(--gold); }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            position: relative;
            z-index: 2;
            margin-bottom: 20px;
        }
        .breadcrumb ul {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }
        .breadcrumb ul li a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }
        .breadcrumb ul li a:hover { color: var(--gold); }
        .breadcrumb ul li i {
            font-size: 10px;
            color: rgba(255, 255, 255, 0.4);
        }
        .breadcrumb ul li:last-child {
            color: var(--gold);
        }

        /* ===== 响应式断点 ===== */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .methods-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .tips-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .method-card {
                padding: 28px 20px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }
            .page-hero {
                padding: 120px 0 72px;
            }
            .page-hero-content h1 {
                font-size: 32px;
            }
            .page-hero-content p {
                font-size: 15px;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 32px;
                padding-top: 24px;
                flex-wrap: wrap;
            }

            .section-header h2 {
                font-size: 26px;
            }

            /* 导航响应式 */
            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 12px);
                left: 0;
                right: 0;
                background: #fff;
                border-radius: 20px;
                padding: 16px;
                box-shadow: 0 16px 40px rgba(22, 27, 61, 0.16);
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                display: block;
                padding: 13px 18px;
                border-radius: 12px;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-cta {
                display: none;
            }

            .methods-grid {
                grid-template-columns: 1fr;
            }
            .issues-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .faq-q {
                padding: 18px 20px;
                font-size: 15px;
            }
            .faq-a {
                padding: 0 20px;
            }
            .faq-accordion-item.active .faq-a {
                padding: 0 20px 18px;
            }
            .container {
                padding: 0 20px;
            }
        }

        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .page-hero-content h1 {
                font-size: 26px;
            }
            .page-hero-content p {
                font-size: 14px;
            }
            .cta-content h2 {
                font-size: 26px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .method-card {
                padding: 24px 18px;
            }
            .issue-card {
                padding: 20px;
            }
            .nav-capsule {
                padding: 8px 8px 8px 18px;
            }
            .brand-logo {
                font-size: 16px;
            }
            .brand-logo i {
                font-size: 16px;
            }
        }

/* roulang page: article */
:root {
            --primary: #0d1f3c;
            --primary-light: #16305c;
            --accent: #f0a92e;
            --accent-light: #ffc861;
            --accent-dark: #d18e1a;
            --bg: #f4f7fb;
            --bg-alt: #eef2f7;
            --card: #ffffff;
            --text: #1c2733;
            --text-weak: #6c7a8d;
            --border: #e3e9f0;
            --shadow: 0 8px 30px rgba(13, 31, 60, 0.08);
            --shadow-lift: 0 14px 34px rgba(13, 31, 60, 0.12);
            --radius: 18px;
            --radius-sm: 12px;
            --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
        }

        .container,
        .grid-container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }

        .section {
            padding: 68px 0;
        }

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

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 44px;
        }

        .section-head .eyebrow {
            display: inline-block;
            font-size: .82rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent);
            background: rgba(240, 169, 46, 0.12);
            padding: 6px 18px;
            border-radius: 30px;
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-head p {
            color: var(--text-weak);
            font-size: .98rem;
            margin-bottom: 0;
        }

        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 0 20px;
            pointer-events: none;
        }

        .nav-capsule {
            max-width: 1240px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            gap: 18px;
            background: rgba(13, 31, 60, 0.82);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 60px;
            padding: 10px 14px 10px 22px;
            box-shadow: 0 10px 40px rgba(13, 31, 60, 0.28);
            pointer-events: auto;
            position: relative;
            transition: background .3s ease, box-shadow .3s ease;
        }

        .site-header.scrolled .nav-capsule {
            background: rgba(13, 31, 60, 0.96);
            box-shadow: 0 16px 46px rgba(13, 31, 60, 0.36);
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 1.18rem;
            font-weight: 800;
            color: #ffffff;
            text-decoration: none;
            letter-spacing: .3px;
            white-space: nowrap;
        }

        .brand-logo i {
            color: var(--accent);
            font-size: 1.3rem;
        }

        .nav-links {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0 0 0 auto;
            padding: 0;
        }

        .nav-links li {
            margin: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: .93rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.82);
            text-decoration: none;
            transition: all .25s ease;
        }

        .nav-links li a:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.12);
        }

        .nav-links li a.active {
            color: #ffffff;
            background: var(--accent);
            box-shadow: 0 4px 16px rgba(240, 169, 46, 0.35);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 20px;
            border-radius: 30px;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: #0d1f3c;
            font-weight: 700;
            font-size: .92rem;
            text-decoration: none;
            white-space: nowrap;
            transition: all .25s ease;
            box-shadow: 0 4px 18px rgba(240, 169, 46, 0.3);
            border: 0;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(240, 169, 46, 0.4);
            color: #0d1f3c;
        }

        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #ffffff;
            border-radius: 50%;
            width: 42px;
            height: 42px;
            font-size: 1rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: background .2s ease;
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        .page-banner {
            position: relative;
            padding: 160px 0 64px;
            background: linear-gradient(135deg, rgba(13, 31, 60, 0.94) 0%, rgba(24, 50, 92, 0.84) 55%, rgba(15, 35, 68, 0.92) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #ffffff;
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: .88rem;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: color .2s;
        }

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

        .breadcrumb i {
            font-size: .7rem;
            color: rgba(255, 255, 255, 0.4);
        }

        .banner-title {
            font-size: clamp(1.6rem, 3.4vw, 2.5rem);
            font-weight: 800;
            line-height: 1.35;
            max-width: 850px;
            margin: 0 0 16px;
            color: #ffffff;
        }

        .banner-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            color: rgba(255, 255, 255, 0.75);
            font-size: .9rem;
        }

        .banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .banner-meta .badge {
            background: var(--accent);
            color: #0d1f3c;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: .8rem;
            font-weight: 700;
        }

        .article-section {
            padding: 56px 0 70px;
        }

        .article-layout {
            align-items: start;
        }

        .article-main {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 36px;
            margin-bottom: 30px;
        }

        .article-cover {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 28px;
            max-height: 430px;
        }

        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            color: var(--text-weak);
            font-size: .88rem;
            padding-bottom: 22px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 28px;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .article-body {
            font-size: 1.03rem;
            line-height: 1.95;
            color: #2d3848;
        }

        .article-body h2 {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            margin: 1.6em 0 .6em;
            padding-left: 14px;
            border-left: 4px solid var(--accent);
        }

        .article-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin: 1.4em 0 .5em;
        }

        .article-body p {
            margin-bottom: 1.1em;
        }

        .article-body img {
            max-width: 100%;
            border-radius: var(--radius-sm);
            margin: 1em 0;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 1.2em 1.4em;
            padding: 0;
        }

        .article-body li {
            margin-bottom: .45em;
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: #fdf6e8;
            padding: 16px 20px;
            border-radius: 8px;
            margin: 1.4em 0;
            color: #4a5568;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.4em 0;
        }

        .article-body table th,
        .article-body table td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }

        .article-body table th {
            background: var(--bg-alt);
            font-weight: 700;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 34px;
            padding-top: 22px;
            border-top: 1px solid var(--border);
        }

        .article-tags a {
            padding: 6px 16px;
            border-radius: 20px;
            background: var(--bg-alt);
            color: var(--text);
            font-size: .82rem;
            font-weight: 500;
            text-decoration: none;
            transition: all .2s ease;
        }

        .article-tags a:hover {
            background: var(--accent);
            color: #ffffff;
        }

        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 26px;
            position: sticky;
            top: 108px;
        }

        .side-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 24px;
        }

        .side-card h3 {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .side-card h3 i {
            color: var(--accent);
        }

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

        .side-list li {
            padding: 11px 0;
            border-bottom: 1px dashed var(--border);
            line-height: 1.5;
        }

        .side-list li:last-child {
            border-bottom: 0;
        }

        .side-list li a {
            color: var(--text);
            text-decoration: none;
            font-size: .9rem;
            font-weight: 500;
            display: block;
            transition: color .2s ease;
        }

        .side-list li a:hover {
            color: var(--accent);
        }

        .side-date {
            font-size: .75rem;
            color: var(--text-weak);
            display: block;
            margin-bottom: 3px;
        }

        .side-guide {
            background: linear-gradient(135deg, var(--primary), var(--primary-light)), url('/assets/images/coverpic/cover-2.png') center/cover no-repeat;
            color: #ffffff;
            border-radius: var(--radius);
            padding: 28px 24px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .side-guide h4 {
            font-size: 1.12rem;
            font-weight: 800;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }

        .side-guide p {
            font-size: .85rem;
            opacity: .85;
            margin-bottom: 18px;
            position: relative;
            z-index: 1;
        }

        .side-guide .btn-accent {
            position: relative;
            z-index: 1;
        }

        .security-tip p {
            font-size: .88rem;
            color: var(--text-weak);
            margin-bottom: 0;
        }

        .btn-accent,
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border-radius: 40px;
            text-decoration: none;
            font-weight: 700;
            transition: all .3s ease;
            cursor: pointer;
            border: 0;
            font-size: .95rem;
        }

        .btn-accent {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: #0d1f3c;
            padding: 13px 32px;
            box-shadow: 0 8px 24px rgba(240, 169, 46, 0.35);
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(240, 169, 46, 0.45);
            color: #0d1f3c;
        }

        .btn-accent.btn-sm {
            padding: 9px 22px;
            font-size: .84rem;
        }

        .btn-outline {
            border: 2px solid rgba(255, 255, 255, 0.6);
            color: #ffffff;
            background: transparent;
            padding: 12px 28px;
        }

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

        .not-found-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 70px 30px;
            text-align: center;
            box-shadow: var(--shadow);
            max-width: 640px;
            margin: 20px auto;
        }

        .not-found-card i {
            font-size: 2.6rem;
            color: var(--accent);
            margin-bottom: 16px;
        }

        .not-found-card h2 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

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

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

        .related-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform .3s ease, box-shadow .3s ease;
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lift);
        }

        .related-card .card-cover {
            height: 180px;
            overflow: hidden;
            background: var(--bg-alt);
        }

        .related-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

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

        .related-card .card-body {
            padding: 22px;
        }

        .card-tag {
            display: inline-block;
            font-size: .72rem;
            font-weight: 700;
            color: var(--accent);
            background: rgba(240, 169, 46, 0.12);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }

        .related-card .card-body h3 {
            font-size: 1rem;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
            color: var(--primary);
        }

        .related-card .card-body h3 a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s;
        }

        .related-card .card-body h3 a:hover {
            color: var(--accent);
        }

        .related-card .card-body p {
            font-size: .85rem;
            color: var(--text-weak);
            margin-bottom: 14px;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: .84rem;
            font-weight: 600;
            color: var(--accent);
            text-decoration: none;
            transition: gap .2s ease;
        }

        .card-link:hover {
            gap: 10px;
            color: var(--accent-dark);
        }

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

        .stats-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            text-align: center;
            padding: 34px 20px;
            transition: transform .3s ease, box-shadow .3s ease;
        }

        .stats-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lift);
        }

        .stats-card .icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(240, 169, 46, 0.12);
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 16px;
        }

        .stats-card h3 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .stats-card p {
            font-size: .88rem;
            color: var(--text-weak);
            margin: 0;
        }

        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow .3s ease;
        }

        .faq-item.active {
            box-shadow: var(--shadow);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            padding: 20px 22px;
            background: transparent;
            border: 0;
            font-size: .98rem;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            text-align: left;
            font-family: inherit;
            margin: 0;
            transition: color .2s ease;
        }

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

        .faq-question .icon {
            transition: transform .3s ease;
            color: var(--accent);
            margin-left: 12px;
        }

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

        .faq-answer {
            display: none;
            padding: 14px 22px 20px;
            color: var(--text-weak);
            font-size: .92rem;
            line-height: 1.8;
            border-top: 1px solid var(--border);
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #1e4378 70%, #2a5690 100%);
            padding: 76px 0;
            text-align: center;
            color: #ffffff;
            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: .14;
        }

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

        .cta-box h2 {
            font-size: clamp(1.6rem, 3.4vw, 2.4rem);
            font-weight: 800;
            margin-bottom: 12px;
            color: #ffffff;
        }

        .cta-box p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 30px;
            font-size: 1rem;
        }

        .cta-btns {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        .site-footer {
            background: #0b1727;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }

        .site-footer .brand-logo {
            color: #ffffff;
            margin-bottom: 18px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand p {
            font-size: .88rem;
            line-height: 1.8;
            margin: 16px 0 0;
        }

        .footer-col h4 {
            font-size: .95rem;
            color: #ffffff;
            font-weight: 700;
            margin-bottom: 16px;
        }

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

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

        .footer-col a {
            color: rgba(255, 255, 255, 0.65);
            text-decoration: none;
            font-size: .88rem;
            transition: color .2s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: .82rem;
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 0;
            }

            .nav-links li a {
                padding: 8px 12px;
                font-size: .88rem;
            }

            .nav-cta {
                padding: 8px 14px;
                font-size: .85rem;
            }

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

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

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

            .article-sidebar {
                position: static;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                top: 12px;
                padding: 0 14px;
            }

            .nav-capsule {
                padding: 8px 12px 8px 18px;
                border-radius: 40px;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .nav-links {
                position: absolute;
                top: calc(100% + 10px);
                left: 0;
                right: 0;
                flex-direction: column;
                background: rgba(13, 31, 60, 0.97);
                border: 1px solid rgba(255, 255, 255, 0.1);
                border-radius: 20px;
                padding: 14px;
                margin: 0;
                display: none;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links li {
                width: 100%;
            }

            .nav-links li a {
                padding: 12px 16px;
                font-size: .95rem;
            }

            .nav-cta {
                display: none;
            }

            .page-banner {
                padding: 140px 0 52px;
            }

            .article-main {
                padding: 26px 20px;
            }

            .section {
                padding: 52px 0;
            }

            .cta-section {
                padding: 56px 0;
            }

            .cta-btns {
                flex-direction: column;
                align-items: center;
            }

            .cta-btns .btn-accent,
            .cta-btns .btn-outline {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .brand-logo {
                font-size: 1.05rem;
            }

            .brand-logo i {
                font-size: 1.1rem;
            }

            .banner-title {
                font-size: 1.45rem;
            }

            .banner-meta {
                gap: 10px;
                font-size: .82rem;
            }

            .article-meta {
                gap: 10px;
                font-size: .82rem;
            }

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

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .section-head h2 {
                font-size: 1.4rem;
            }

            .faq-question {
                font-size: .9rem;
                padding: 16px 16px;
            }

            .faq-answer {
                padding: 12px 16px 16px;
                font-size: .86rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1a2b5e;
            --primary-light: #2d4a8f;
            --accent: #ff6b35;
            --accent-light: #ff8c5a;
            --bg-body: #f5f7fb;
            --bg-dark: #0e1530;
            --bg-card: #ffffff;
            --text-main: #1a1f36;
            --text-muted: #5a6478;
            --text-light: #e8ecf5;
            --border: #e2e6ef;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 2px 8px rgba(26, 43, 94, 0.06);
            --shadow-md: 0 6px 20px rgba(26, 43, 94, 0.10);
            --shadow-lg: 0 14px 36px rgba(26, 43, 94, 0.14);
            --transition: 0.3s ease;
            --container-w: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Segoe UI", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
        }

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

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

        a:hover,
        a:focus {
            color: var(--accent);
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 16px;
            z-index: 1000;
            padding: 0 24px;
            margin-top: 16px;
        }

        .nav-capsule {
            max-width: var(--container-w);
            margin: 0 auto;
            display: flex;
            align-items: center;
            gap: 28px;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(255, 255, 255, 0.75);
            border-radius: 60px;
            padding: 10px 20px 10px 26px;
            box-shadow: var(--shadow-md);
            transition: box-shadow var(--transition);
        }

        .nav-capsule:hover {
            box-shadow: var(--shadow-lg);
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.01em;
            white-space: nowrap;
            transition: opacity var(--transition);
        }

        .brand-logo i {
            color: var(--accent);
            font-size: 22px;
        }

        .brand-logo:hover {
            color: var(--primary);
            opacity: 0.85;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-links>li>a {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            transition: all var(--transition);
        }

        .nav-links>li>a:hover,
        .nav-links>li>a:focus-visible {
            color: var(--primary);
            background: rgba(26, 43, 94, 0.07);
            outline: none;
        }

        .nav-links>li>a.active {
            background: var(--primary);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(26, 43, 94, 0.28);
        }

        .nav-links>li>a.active:hover {
            background: var(--primary-light);
            color: #ffffff;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #ffffff;
            border: none;
            border-radius: 50px;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 700;
            white-space: nowrap;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.30);
        }

        .nav-cta:hover {
            background: var(--accent-light);
            color: #ffffff;
            transform: translateY(-2px);
        }

        .nav-cta:focus-visible {
            outline: 3px solid rgba(255, 107, 53, 0.4);
            outline-offset: 2px;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--primary);
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(26, 43, 94, 0.08);
        }

        @media (max-width: 900px) {
            .site-header {
                padding: 0 16px;
                top: 12px;
            }

            .nav-capsule {
                flex-wrap: wrap;
                padding: 10px 16px;
                gap: 10px;
                border-radius: 26px;
            }

            .nav-toggle {
                display: block;
                margin-left: auto;
            }

            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                background: #ffffff;
                border-radius: 18px;
                padding: 12px;
                gap: 6px;
                box-shadow: var(--shadow-md);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links>li>a {
                display: block;
                padding: 10px 16px;
            }

            .nav-cta {
                display: none;
            }
        }

        @media (max-width: 420px) {
            .brand-logo {
                font-size: 17px;
            }
        }

        /* ===== Hero Banner ===== */
        .page-hero {
            position: relative;
            padding: 110px 0 90px;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(14, 21, 48, 0.92) 0%, rgba(26, 43, 94, 0.75) 50%, rgba(255, 107, 53, 0.45) 100%);
            z-index: 1;
        }

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

        .breadcrumb {
            display: flex;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 18px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }

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

        .page-hero h1 {
            font-size: 46px;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.2;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .page-hero h1 span {
            color: var(--accent-light);
        }

        .page-hero p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin-bottom: 26px;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 50px;
            padding: 8px 18px;
            color: #ffffff;
            font-size: 14px;
            font-weight: 500;
        }

        .hero-badge i {
            color: var(--accent-light);
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 80px 0 60px;
                background-attachment: scroll;
            }

            .page-hero h1 {
                font-size: 32px;
            }

            .page-hero p {
                font-size: 16px;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 26px;
            }

            .hero-badge {
                font-size: 13px;
                padding: 6px 14px;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 90px 0;
        }

        .section-tight {
            padding: 60px 0;
        }

        .section-head {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 107, 53, 0.10);
            color: var(--accent);
            font-size: 13px;
            font-weight: 700;
            border-radius: 50px;
            padding: 6px 18px;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .section-head h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.25;
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }

            .section-tight {
                padding: 40px 0;
            }

            .section-head h2 {
                font-size: 27px;
            }
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

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

        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 620px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 安全服务卡片 ===== */
        .security-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 34px 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .security-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--primary-light));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition);
        }

        .security-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .security-card:hover::after {
            transform: scaleX(1);
        }

        .security-icon {
            width: 58px;
            height: 58px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #ffffff;
            font-size: 24px;
            margin-bottom: 20px;
            box-shadow: 0 6px 16px rgba(26, 43, 94, 0.26);
        }

        .security-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .security-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .security-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        .security-card .card-link i {
            transition: transform var(--transition);
        }

        .security-card:hover .card-link i {
            transform: translateX(4px);
        }

        /* ===== 数据指标 ===== */
        .stats-section {
            background: var(--bg-dark);
            position: relative;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(14, 21, 48, 0.88);
        }

        .stats-section .container {
            position: relative;
            z-index: 2;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }

        .stat-block {
            text-align: center;
            padding: 16px;
        }

        .stat-number {
            font-size: 48px;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.2;
            margin-bottom: 6px;
            letter-spacing: -0.02em;
        }

        .stat-number i {
            font-size: 30px;
            color: var(--accent-light);
            margin-right: 4px;
            font-style: normal;
        }

        .stat-label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.65);
        }

        .stat-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            margin-top: 4px;
        }

        @media (max-width: 900px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }

        @media (max-width: 480px) {
            .stat-number {
                font-size: 36px;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps-section {
            background: #ffffff;
        }

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

        .step-item {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 36px 24px;
            text-align: center;
            position: relative;
            transition: all var(--transition);
        }

        .step-item::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 34px;
            height: 34px;
            background: var(--accent);
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(255, 107, 53, 0.4);
        }

        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .step-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 16px;
            background: rgba(26, 43, 94, 0.08);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
        }

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

        /* ===== 对比区块 ===== */
        .compare-section {
            background: linear-gradient(180deg, #f5f7fb, #ffffff);
        }

        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: stretch;
        }

        .compare-col {
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            transition: transform var(--transition);
        }

        .compare-col:hover {
            transform: translateY(-4px);
        }

        .compare-col.safe {
            background: var(--bg-card);
            border: 2px solid var(--primary);
            box-shadow: var(--shadow-md);
        }

        .compare-col.risky {
            background: #fafafa;
            border: 1px dashed #d0d5df;
        }

        .compare-col h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 22px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .compare-col.safe h3 i {
            color: #2eb872;
        }

        .compare-col.risky h3 i {
            color: #d95b5b;
        }

        .compare-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .compare-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            line-height: 1.6;
        }

        .compare-list li i {
            margin-top: 4px;
            font-size: 16px;
        }

        .compare-list.safe-list li i {
            color: #2eb872;
        }

        .compare-list.risky-list li i {
            color: #d95b5b;
        }

        @media (max-width: 900px) {
            .compare-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 480px) {
            .compare-col {
                padding: 28px 20px;
            }
        }

        /* ===== 内容列表 ===== */
        .list-section {
            background: #ffffff;
        }

        .dual-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .list-content h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .list-content>p {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        .content-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .content-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 14px 18px;
            font-size: 15px;
            transition: all var(--transition);
        }

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

        .content-list li i {
            color: var(--accent);
            margin-top: 3px;
        }

        .list-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .list-image img {
            width: 100%;
            height: 340px;
            object-fit: cover;
        }

        .list-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(14, 21, 48, 0.55), transparent 40%);
            pointer-events: none;
        }

        .image-tag {
            position: absolute;
            left: 20px;
            bottom: 20px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            border-radius: 50px;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
        }

        @media (max-width: 900px) {
            .dual-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .list-image img {
                height: 280px;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-body);
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
        }

        .faq-toggle {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            background: rgba(26, 43, 94, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--primary);
            transition: all var(--transition);
        }

        .faq-item.active .faq-toggle {
            background: var(--accent);
            color: #ffffff;
            transform: rotate(135deg);
        }

        .faq-answer {
            display: none;
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 90px 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(14, 21, 48, 0.9), rgba(26, 43, 94, 0.82));
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 38px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 14px;
        }

        .cta-content p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 30px;
        }

        .cta-btns {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(255, 107, 53, 0.5);
            outline-offset: 3px;
        }

        .btn-primary {
            background: var(--accent);
            color: #ffffff;
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.35);
        }

        .btn-primary:hover {
            background: var(--accent-light);
            color: #ffffff;
            transform: translateY(-2px);
        }

        .btn-outline-light {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255, 255, 255, 0.6);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #ffffff;
            transform: translateY(-2px);
        }

        @media (max-width: 520px) {
            .cta-section {
                padding: 60px 0;
            }

            .cta-content h2 {
                font-size: 28px;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            padding: 70px 0 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .brand-logo {
            color: #ffffff;
            font-size: 22px;
            margin-bottom: 16px;
        }

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

        .footer-brand p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 17px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 20px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-col ul a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.65);
            transition: all var(--transition);
        }

        .footer-col ul a:hover {
            color: var(--accent-light);
            transform: translateX(4px);
        }

        .footer-col ul a i {
            font-size: 12px;
            color: var(--accent);
        }

        .footer-bottom {
            padding-top: 24px;
            text-align: center;
            color: rgba(255, 255, 255, 0.45);
            font-size: 14px;
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

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

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

/* roulang page: category2 */
:root {
            --primary: #2f5af3;
            --primary-light: #5b82f6;
            --primary-dark: #1e40af;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg-body: #f0f4ff;
            --bg-white: #ffffff;
            --bg-gray: #f8fafc;
            --bg-dark: #0f172a;
            --text-main: #1e293b;
            --text-weak: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-w: 1240px;
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.65;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(47, 90, 243, 0.4);
            outline-offset: 2px;
        }

        ul,
        ol {
            list-style: none;
        }

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

        .section {
            padding: 90px 0;
            position: relative;
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }

        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(47, 90, 243, 0.08);
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 30px;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .section-head .eyebrow i {
            font-size: 12px;
        }

        .section-head h2 {
            font-size: clamp(28px, 3.6vw, 40px);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-main);
            letter-spacing: -0.02em;
            margin-bottom: 14px;
        }

        .section-head p {
            font-size: 17px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 40px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
            background: transparent;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff;
            box-shadow: 0 8px 20px rgba(47, 90, 243, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(47, 90, 243, 0.35);
            color: #fff;
        }

        .btn-outline {
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            border: 1.5px solid rgba(47, 90, 243, 0.3);
            box-shadow: 0 4px 12px rgba(15, 23, 42, 0.05);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            box-shadow: 0 8px 20px rgba(47, 90, 243, 0.12);
            transform: translateY(-2px);
        }

        .btn-light {
            background: #ffffff;
            color: var(--primary-dark);
            box-shadow: 0 8px 24px rgba(15, 23, 42, 0.14);
        }

        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 32px rgba(15, 23, 42, 0.20);
            color: var(--primary-dark);
        }

        .btn-ghost-light {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
            backdrop-filter: blur(4px);
        }

        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, 0.25);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 20px 24px 0;
            pointer-events: none;
        }

        .nav-capsule {
            position: relative;
            pointer-events: auto;
            max-width: var(--container-w);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(22px);
            -webkit-backdrop-filter: blur(22px);
            border: 1px solid rgba(255, 255, 255, 0.7);
            border-radius: 60px;
            padding: 12px 22px;
            box-shadow: 0 8px 32px rgba(15, 23, 42, 0.12);
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-main);
            white-space: nowrap;
            letter-spacing: -0.01em;
        }

        .brand-logo i {
            color: var(--primary);
            font-size: 22px;
            background: rgba(47, 90, 243, 0.1);
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
        }

        .nav-links li {
            margin: 0;
        }

        .nav-links a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-weak);
            transition: var(--transition);
            position: relative;
        }

        .nav-links a:hover {
            color: var(--primary);
            background: rgba(47, 90, 243, 0.06);
        }

        .nav-links a.active {
            color: var(--primary);
            background: rgba(47, 90, 243, 0.1);
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff;
            padding: 10px 22px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 6px 16px rgba(47, 90, 243, 0.3);
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(47, 90, 243, 0.4);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            background: rgba(47, 90, 243, 0.08);
            border: none;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            font-size: 18px;
            color: var(--primary);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(47, 90, 243, 0.15);
        }

        /* ===== Hero 横幅 ===== */
        .category-hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(rgba(15, 23, 42, 0.76), rgba(15, 23, 42, 0.60)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 160px 24px 80px;
            overflow: hidden;
            border-radius: 0 0 40px 40px;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-body), transparent);
            z-index: 2;
        }

        .category-hero-inner {
            position: relative;
            z-index: 3;
            max-width: 860px;
            margin: 0 auto;
        }

        .category-hero .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.18);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 24px;
            backdrop-filter: blur(6px);
            letter-spacing: 0.02em;
        }

        .category-hero h1 {
            font-size: clamp(32px, 5vw, 54px);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }

        .category-hero h1 .accent {
            color: var(--accent-light);
        }

        .category-hero p {
            font-size: clamp(16px, 2vw, 19px);
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.75;
            margin-bottom: 32px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== 数据统计卡 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            text-align: center;
            border: 1px solid rgba(226, 232, 240, 0.7);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .stat-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

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

        .stat-card:hover::before {
            opacity: 1;
        }

        .stat-icon {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 14px;
            display: inline-flex;
            width: 60px;
            height: 60px;
            border-radius: 18px;
            background: rgba(47, 90, 243, 0.08);
            align-items: center;
            justify-content: center;
        }

        .stat-number {
            font-size: 38px;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }

        .stat-number span {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-weak);
            margin-left: 2px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-weak);
            margin-top: 6px;
            line-height: 1.5;
        }

        /* ===== 分类卡片 ===== */
        .topic-cards {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .topic-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(226, 232, 240, 0.7);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .topic-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .topic-card-img {
            position: relative;
            height: 180px;
            overflow: hidden;
        }

        .topic-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .topic-card:hover .topic-card-img img {
            transform: scale(1.06);
        }

        .topic-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.25), transparent);
            pointer-events: none;
        }

        .topic-card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.95);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 20px;
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.12);
        }

        .topic-card-body {
            padding: 24px 22px 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .topic-card-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .topic-card-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            flex: 1;
        }

        .topic-card-link {
            margin-top: 18px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        .topic-card-link i {
            font-size: 12px;
            transition: transform 0.3s ease;
        }

        .topic-card:hover .topic-card-link i {
            transform: translateX(4px);
        }

        /* ===== 评分条 ===== */
        .rating-wrap {
            background: var(--bg-dark);
            border-radius: 32px;
            padding: 70px;
            position: relative;
            overflow: hidden;
        }

        .rating-wrap::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(47, 90, 243, 0.2);
            filter: blur(60px);
        }

        .rating-wrap .section-head {
            margin-bottom: 44px;
            text-align: left;
            max-width: 500px;
        }

        .rating-wrap .section-head h2 {
            color: #fff;
        }

        .rating-wrap .section-head p {
            color: rgba(255, 255, 255, 0.7);
        }

        .rating-wrap .eyebrow {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
        }

        .rating-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .rating-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 18px;
            padding: 24px 26px;
            backdrop-filter: blur(6px);
            transition: var(--transition);
        }

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

        .rating-head {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 12px;
        }

        .rating-head .rating-title {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
        }

        .rating-head .rating-value {
            color: var(--accent-light);
            font-size: 20px;
            font-weight: 700;
        }

        .rating-bar {
            height: 8px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            overflow: hidden;
        }

        .rating-bar span {
            display: block;
            height: 100%;
            border-radius: 10px;
            background: linear-gradient(90deg, var(--primary-light), var(--accent));
            position: relative;
        }

        .rating-bar span::after {
            content: "";
            position: absolute;
            right: 4px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 4px;
            background: rgba(255, 255, 255, 0.8);
            border-radius: 50%;
        }

        /* ===== 内容列表 ===== */
        .content-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
        }

        .featured-content {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            position: relative;
            background: var(--bg-white);
            border: 1px solid rgba(226, 232, 240, 0.7);
        }

        .featured-content-img {
            position: relative;
            height: 260px;
            overflow: hidden;
        }

        .featured-content-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .featured-content:hover .featured-content-img img {
            transform: scale(1.04);
        }

        .featured-content-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.5), transparent 60%);
        }

        .featured-content-badge {
            position: absolute;
            bottom: 14px;
            left: 20px;
            z-index: 2;
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            background: rgba(47, 90, 243, 0.85);
            padding: 5px 14px;
            border-radius: 20px;
        }

        .featured-content-body {
            padding: 24px;
        }

        .featured-content-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .featured-content-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        .content-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .content-list-item {
            display: flex;
            align-items: center;
            gap: 18px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(226, 232, 240, 0.6);
            transition: var(--transition);
        }

        .content-list-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
            border-color: rgba(47, 90, 243, 0.3);
        }

        .content-list-number {
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            border-radius: 50%;
            background: rgba(47, 90, 243, 0.08);
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .content-list-body {
            flex: 1;
            min-width: 0;
        }

        .content-list-body h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .content-list-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-light);
        }

        .content-list-meta .badge {
            background: rgba(47, 90, 243, 0.08);
            color: var(--primary);
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
        }

        .content-list-arrow {
            color: var(--text-light);
            font-size: 14px;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .content-list-item:hover .content-list-arrow {
            color: var(--primary);
            transform: translateX(4px);
        }

        /* ===== 用户反馈 ===== */
        .feedback-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feedback-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 30px 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(226, 232, 240, 0.7);
            position: relative;
            transition: var(--transition);
        }

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

        .feedback-card .quote {
            font-size: 30px;
            color: rgba(47, 90, 243, 0.2);
            margin-bottom: 14px;
            line-height: 1;
        }

        .feedback-card p {
            font-size: 15px;
            color: var(--text-main);
            line-height: 1.75;
            margin-bottom: 20px;
            flex: 1;
        }

        .feedback-user {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        .feedback-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
            flex-shrink: 0;
        }

        .feedback-user .feedback-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.3;
        }

        .feedback-user .feedback-type {
            font-size: 12px;
            color: var(--text-light);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid rgba(226, 232, 240, 0.7);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(47, 90, 243, 0.25);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            list-style: none;
            transition: var(--transition);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

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

        .faq-item summary .faq-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            border-radius: 50%;
            background: rgba(47, 90, 243, 0.08);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 13px;
            transition: var(--transition);
        }

        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-item .faq-answer {
            padding: 0 24px 22px;
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.75;
            border-top: 1px solid var(--border);
            margin-top: 4px;
            padding-top: 14px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 0 0 90px;
        }

        .cta-box {
            background: linear-gradient(120deg, #1e40af 0%, #2f5af3 50%, #5b82f6 100%);
            border-radius: 32px;
            padding: 64px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(47, 90, 243, 0.3);
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: -100px;
            left: -100px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
        }

        .cta-box::after {
            content: "";
            position: absolute;
            bottom: -60px;
            right: -60px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .cta-box .cta-title {
            font-size: clamp(26px, 3.4vw, 38px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -0.02em;
            position: relative;
            z-index: 2;
        }

        .cta-box p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.7;
            position: relative;
            z-index: 2;
        }

        .cta-box .hero-actions {
            position: relative;
            z-index: 2;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 70px 0 30px;
            border-radius: 40px 40px 0 0;
            margin-top: 20px;
        }

        .site-footer .container {
            max-width: var(--container-w);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 44px;
        }

        .footer-brand .brand-logo {
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .brand-logo i {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.75;
            max-width: 360px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .footer-col ul li a i {
            font-size: 11px;
            color: var(--accent);
        }

        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            text-align: center;
        }

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

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .topic-cards {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .rating-wrap {
                padding: 50px 34px;
            }

            .content-wrap {
                grid-template-columns: 1fr;
            }

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

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }

            .nav-capsule {
                padding: 10px 16px;
                gap: 10px;
                border-radius: 40px;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 12px);
                left: 0;
                right: 0;
                flex-direction: column;
                background: #fff;
                border-radius: 20px;
                padding: 12px;
                box-shadow: 0 20px 50px rgba(15, 23, 42, 0.2);
                gap: 4px;
                border: 1px solid var(--border);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                display: block;
                width: 100%;
                padding: 12px 16px;
                border-radius: 14px;
                text-align: center;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .nav-cta {
                padding: 8px 16px;
                font-size: 13px;
            }

            .nav-cta span {
                display: none;
            }

            .brand-logo {
                font-size: 17px;
            }

            .category-hero {
                min-height: 480px;
                padding: 140px 20px 60px;
                border-radius: 0 0 24px 24px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }

            .hero-actions .btn {
                width: 100%;
                max-width: 240px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .stat-card {
                padding: 22px 16px;
            }

            .stat-number {
                font-size: 30px;
            }

            .topic-cards {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .topic-card-img {
                height: 200px;
            }

            .rating-wrap {
                padding: 40px 20px;
                border-radius: 24px;
            }

            .rating-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .feedback-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .content-list-item {
                padding: 14px 16px;
            }

            .content-list-body h4 {
                white-space: normal;
                line-height: 1.4;
                display: -webkit-box;
                -webkit-line-clamp: 2;
                -webkit-box-orient: vertical;
                overflow: hidden;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .cta-box {
                padding: 44px 24px;
                border-radius: 24px;
            }

            .cta-box .hero-actions {
                width: 100%;
            }

            .cta-box .hero-actions .btn {
                width: 100%;
                max-width: 240px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

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

            .stat-card {
                display: flex;
                align-items: center;
                gap: 18px;
                text-align: left;
                padding: 18px 20px;
            }

            .stat-icon {
                margin-bottom: 0;
                width: 52px;
                height: 52px;
                flex-shrink: 0;
            }

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

            .section-head h2 {
                font-size: 26px;
            }

            .section-head p {
                font-size: 15px;
            }

            .content-list-body h4 {
                font-size: 14px;
            }

            .content-list-meta {
                font-size: 12px;
                gap: 6px;
                flex-wrap: wrap;
            }

            .content-list-arrow {
                display: none;
            }

            .faq-item summary {
                padding: 16px 18px;
                font-size: 15px;
            }

            .faq-item .faq-answer {
                padding: 0 18px 18px;
                font-size: 14px;
            }

            .footer-brand p {
                font-size: 13px;
            }
        }