/* roulang page: index */
:root {
            --bg:#F4F5F7;
            --card:#FFFFFF;
            --text:#1A1D23;
            --muted:#5F6672;
            --brand:#E8590C;
            --brand-dark:#C8400A;
            --accent:#0EA5A4;
            --accent-dark:#0B7F7C;
            --line:#E2E5EA;
            --success:#2B9B6E;
            --warn:#F4B740;
            --danger:#D64545;
            --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
            --shadow-sm:0 2px 8px rgba(0,0,0,.04);
            --shadow-md:0 12px 28px rgba(0,0,0,.10);
            --radius-card:12px;
            --radius-btn:10px;
            --radius-input:8px;
        }
        * { box-sizing:border-box; margin:0; padding:0; }
        html { scroll-behavior:smooth; }
        body { font-family:var(--font-sans); background:var(--bg); color:var(--text); line-height:1.7; font-size:16px; }
        a { color:var(--brand); text-decoration:none; transition:color .2s; }
        a:hover { color:var(--brand-dark); }
        img { max-width:100%; display:block; }
        button, input { font-family:inherit; }
        :focus { outline:2px solid var(--brand); outline-offset:2px; }
        .container { max-width:1200px; margin:0 auto; padding:0 24px; }
        section { padding:64px 0; }
        .section-header { text-align:center; max-width:720px; margin:0 auto 40px; }
        .section-header h2 { font-size:28px; margin-bottom:12px; }
        .section-header p { color:var(--muted); font-size:16px; }
        .bg-white { background:var(--card); }
        .bg-gray { background:var(--bg); }

        /* 导航 */
        .site-header { position:sticky; top:0; z-index:100; background:rgba(255,255,255,.96); border-bottom:1px solid var(--line); }
        .nav-wrap { display:flex; align-items:center; justify-content:space-between; height:64px; }
        .logo { font-size:24px; font-weight:700; color:var(--brand); display:flex; align-items:center; gap:8px; }
        .logo .logo-icon { width:32px; height:32px; background:var(--brand); border-radius:8px; display:inline-block; position:relative; }
        .logo .logo-icon::after { content:''; position:absolute; left:8px; top:8px; width:16px; height:16px; background:#fff; border-radius:50%; opacity:.9; }
        .main-nav { display:flex; gap:24px; }
        .nav-link { color:var(--text); font-size:15px; font-weight:500; padding:22px 0 20px; border-bottom:2px solid transparent; transition:color .2s, border-color .2s; }
        .nav-link:hover { color:var(--brand); }
        .nav-link.active { color:var(--brand); border-bottom-color:var(--brand); }
        .nav-cta { display:flex; gap:8px; align-items:center; }
        .menu-toggle { display:none; background:none; border:none; font-size:28px; color:var(--text); cursor:pointer; }

        /* 按钮 */
        .btn { display:inline-flex; align-items:center; justify-content:center; padding:12px 24px; border-radius:var(--radius-btn); font-weight:600; font-size:16px; border:1px solid transparent; cursor:pointer; transition:background .2s, color .2s, border-color .2s, box-shadow .2s; }
        .btn-primary { background:var(--brand); color:#fff; }
        .btn-primary:hover { background:var(--brand-dark); color:#fff; box-shadow:var(--shadow-sm); }
        .btn-outline { background:transparent; border-color:var(--brand); color:var(--brand); }
        .btn-outline:hover { background:var(--brand); color:#fff; }
        .btn-white { background:#fff; color:var(--text); }
        .btn-white:hover { background:var(--bg); }
        .btn-lg { padding:16px 32px; font-size:18px; }
        .btn-sm { padding:8px 16px; font-size:14px; }

        /* Hero */
        .hero { padding:80px 0; background:#fff; }
        .hero-grid { display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:center; }
        .hero-content h1 { font-size:36px; line-height:1.3; margin-bottom:16px; }
        .hero-content .hero-sub { font-size:17px; color:var(--muted); margin-bottom:24px; }
        .hero-actions { display:flex; gap:12px; margin-bottom:24px; flex-wrap:wrap; }
        .hero-stats { display:flex; gap:24px; }
        .stat-item { text-align:center; }
        .stat-number { font-size:28px; font-weight:700; color:var(--brand); }
        .stat-label { font-size:13px; color:var(--muted); }
        .hero-visual { background-image:url('/assets/images/8a51411c76ebbc0f.webp'); background-size:cover; background-position:center; border-radius:16px; height:400px; box-shadow:var(--shadow-md); position:relative; overflow:hidden; }
        .hero-visual::after { content:''; position:absolute; inset:0; background:rgba(0,0,0,.05); }

        /* 信任条 */
        .trust-bar { background:var(--card); border-top:1px solid var(--line); border-bottom:1px solid var(--line); padding:16px 0; }
        .trust-list { display:flex; flex-wrap:wrap; gap:24px; justify-content:center; align-items:center; }
        .trust-item { display:flex; align-items:center; gap:8px; color:var(--muted); font-size:14px; }
        .trust-item .icon { width:24px; height:24px; background:var(--bg); border-radius:4px; display:inline-flex; align-items:center; justify-content:center; }

        /* Bento */
        .bento-grid { display:grid; grid-template-columns:2fr 1fr 1fr; grid-template-rows:auto auto; gap:20px; }
        .bento-card { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); padding:24px; transition:box-shadow .2s; }
        .bento-card:hover { box-shadow:var(--shadow-md); }
        .bento-card.large { grid-row:span 2; }
        .bento-card .icon { width:48px; height:48px; margin-bottom:16px; background:var(--bg); border-radius:10px; display:flex; align-items:center; justify-content:center; font-size:24px; }
        .bento-card h3 { font-size:20px; margin-bottom:8px; }
        .bento-card p { font-size:15px; color:var(--muted); margin-bottom:12px; }
        .bento-card a { font-weight:600; }

        /* 特色双栏 */
        .feature-alt { display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:center; }
        .feature-alt.reverse .feature-img { order:2; }
        .feature-alt.reverse .feature-text { order:1; }
        .feature-img { border-radius:var(--radius-card); aspect-ratio:16/10; background-size:cover; background-position:center; box-shadow:var(--shadow-sm); }
        .feature-text h2 { font-size:28px; margin-bottom:16px; }
        .feature-text p { color:var(--muted); margin-bottom:16px; }
        .feature-points { list-style:none; margin-bottom:24px; }
        .feature-points li { padding-left:24px; position:relative; margin-bottom:8px; }
        .feature-points li::before { content:'✓'; position:absolute; left:0; color:var(--success); font-weight:700; }

        /* 分类入口 */
        .category-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
        .category-card { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); padding:24px; display:flex; flex-direction:column; transition:box-shadow .2s; }
        .category-card:hover { box-shadow:var(--shadow-md); }
        .category-card .icon { width:48px; height:48px; margin-bottom:16px; background:var(--bg); border-radius:10px; display:flex; align-items:center; justify-content:center; font-size:24px; }
        .category-card h3 { font-size:20px; margin-bottom:8px; }
        .category-card p { flex:1; color:var(--muted); font-size:15px; margin-bottom:16px; }
        .category-card .btn { align-self:flex-start; }

        /* 版本发布 */
        .version-list { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
        .version-card { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); padding:20px; }
        .version-card .version-tag { display:inline-block; background:var(--accent); color:#fff; font-size:12px; padding:2px 8px; border-radius:4px; margin-bottom:8px; }
        .version-card h3 { font-size:18px; margin-bottom:4px; }
        .version-card .date { color:var(--muted); font-size:13px; margin-bottom:8px; }
        .version-card p { font-size:14px; color:var(--muted); }

        /* 扩展插件 */
        .plugin-scroll { display:flex; gap:20px; overflow-x:auto; padding-bottom:16px; }
        .plugin-card { flex:0 0 240px; background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); padding:16px; }
        .plugin-card .icon { width:40px; height:40px; margin-bottom:12px; background:var(--bg); border-radius:8px; display:flex; align-items:center; justify-content:center; font-size:20px; }
        .plugin-card h4 { font-size:16px; margin-bottom:4px; }
        .plugin-card p { font-size:13px; color:var(--muted); margin-bottom:8px; }
        .plugin-card .badge { font-size:12px; padding:2px 8px; border-radius:4px; display:inline-block; }
        .badge.recommend { background:var(--success); color:#fff; }
        .badge.free { background:var(--accent); color:#fff; }
        .badge.new { background:var(--warn); color:#fff; }

        /* 安装指南 */
        .steps-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
        .step-card { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); padding:24px; text-align:center; }
        .step-number { font-size:32px; font-weight:700; color:var(--brand); margin-bottom:8px; }
        .step-card h3 { font-size:18px; margin-bottom:8px; }
        .step-card p { color:var(--muted); font-size:14px; }

        /* 安全承诺 */
        .privacy-section { display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:center; }
        .privacy-text h2 { font-size:28px; margin-bottom:16px; }
        .privacy-text p { color:var(--muted); margin-bottom:16px; }
        .badge-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:16px; }
        .compliance-badge { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); padding:16px; text-align:center; }
        .compliance-badge h4 { font-size:15px; margin-bottom:4px; }
        .compliance-badge p { font-size:13px; color:var(--muted); }

        /* 功能对比 */
        .compare-card { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); overflow:hidden; }
        .compare-row { display:grid; grid-template-columns:2fr 1fr 1fr; padding:16px 20px; border-bottom:1px solid var(--line); }
        .compare-row.header { background:var(--bg); font-weight:600; }
        .compare-row .feature { text-align:left; }
        .compare-row .cell { text-align:center; }
        .compare-row .cell.yes { color:var(--success); }
        .compare-row .cell.no { color:var(--muted); }
        .compare-row:last-child { border-bottom:none; }
        .brand-highlight { background:rgba(232,89,12,.05); }

        /* 评价 */
        .testimonial-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
        .testimonial-card { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); padding:24px; }
        .testimonial-card .stars { color:var(--warn); font-size:18px; margin-bottom:8px; }
        .testimonial-card p { color:var(--muted); font-size:15px; }
        .testimonial-card .author { margin-top:12px; font-weight:600; }
        .testimonial-card .role { font-size:13px; color:var(--muted); }

        /* FAQ */
        .faq-list { max-width:800px; margin:0 auto; }
        .faq-item { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); margin-bottom:12px; overflow:hidden; }
        .faq-question { width:100%; text-align:left; padding:18px 20px; background:none; border:none; font-size:16px; font-weight:600; cursor:pointer; display:flex; justify-content:space-between; align-items:center; color:var(--text); }
        .faq-question:hover { color:var(--brand); }
        .faq-question .icon { transition:transform .2s; font-size:20px; }
        .faq-item.open .faq-question .icon { transform:rotate(45deg); }
        .faq-answer { padding:0 20px 18px; color:var(--muted); display:none; }
        .faq-item.open .faq-answer { display:block; }

        /* 资讯列表 */
        .post-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
        .post-card { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); padding:20px; transition:box-shadow .2s; display:flex; flex-direction:column; }
        .post-card:hover { box-shadow:var(--shadow-md); }
        .post-card .post-cat { display:inline-block; font-size:12px; background:var(--bg); color:var(--brand); padding:2px 8px; border-radius:4px; margin-bottom:8px; align-self:flex-start; }
        .post-card h3 { font-size:18px; margin-bottom:8px; }
        .post-card p { font-size:14px; color:var(--muted); flex:1; }
        .post-card .post-meta { font-size:13px; color:var(--muted); margin-top:8px; }
        .empty-state { text-align:center; padding:48px 0; color:var(--muted); }

        /* 订阅 */
        .subscribe-box { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); padding:40px; text-align:center; }
        .subscribe-box h2 { font-size:28px; margin-bottom:8px; }
        .subscribe-box p { color:var(--muted); margin-bottom:24px; }
        .subscribe-form { display:flex; gap:12px; justify-content:center; flex-wrap:wrap; max-width:600px; margin:0 auto; }
        .subscribe-form input[type="email"] { flex:1; min-width:260px; padding:12px 16px; border:1px solid var(--line); border-radius:var(--radius-input); font-size:16px; }

        /* CTA 横幅 */
        .cta-banner { background:var(--text); color:#fff; text-align:center; padding:64px 0; }
        .cta-banner h2 { font-size:32px; margin-bottom:16px; }
        .cta-banner p { color:rgba(255,255,255,.7); margin-bottom:24px; }
        .cta-actions { display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }
        .cta-banner .btn-primary { background:var(--brand); }
        .cta-banner .btn-outline { border-color:#fff; color:#fff; }
        .cta-banner .btn-outline:hover { background:#fff; color:var(--text); }

        /* 页脚 */
        .site-footer { background:#1F2329; color:rgba(255,255,255,.7); padding:48px 0 24px; }
        .footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:32px; margin-bottom:32px; }
        .footer-col h4 { font-size:18px; color:#fff; margin-bottom:16px; }
        .footer-col p { font-size:14px; }
        .footer-col ul { list-style:none; }
        .footer-col ul li { margin-bottom:8px; }
        .footer-col ul a { color:rgba(255,255,255,.7); font-size:14px; }
        .footer-col ul a:hover { color:var(--accent); }
        .footer-bottom { border-top:1px solid rgba(255,255,255,.1); padding-top:16px; text-align:center; font-size:13px; }

        /* 移动端 */
        @media (max-width:1024px) {
            .hero-grid, .feature-alt, .privacy-section { grid-template-columns:1fr; }
            .bento-grid { grid-template-columns:1fr 1fr; }
            .bento-card.large { grid-column:span 2; }
            .category-grid, .version-list, .testimonial-grid, .post-grid, .steps-grid { grid-template-columns:repeat(2,1fr); }
            .footer-grid { grid-template-columns:repeat(2,1fr); }
        }
        @media (max-width:768px) {
            .main-nav, .nav-cta .btn { display:none; }
            .menu-toggle { display:block; }
            .hero { padding:48px 0; }
            section { padding:40px 0; }
            .hero-content h1 { font-size:28px; }
            .hero-visual { height:280px; }
            .bento-grid { grid-template-columns:1fr; }
            .bento-card.large { grid-column:auto; }
            .category-grid, .version-list, .testimonial-grid, .post-grid, .steps-grid { grid-template-columns:1fr; }
            .footer-grid { grid-template-columns:1fr; }
            .compare-row { grid-template-columns:1.5fr 1fr 1fr; font-size:14px; }
            .plugin-card { flex:0 0 200px; }
            .menu-open .main-nav { display:flex; flex-direction:column; position:absolute; top:64px; left:0; right:0; background:#fff; padding:20px 24px; box-shadow:var(--shadow-md); }
            .menu-open .main-nav .nav-link { padding:12px 0; border-bottom:1px solid var(--line); }
            .menu-open .nav-cta { display:block; margin-top:16px; }
        }
        @media (max-width:520px) {
            .container { padding:0 16px; }
            .hero-actions, .cta-actions { flex-direction:column; }
            .hero-stats { flex-direction:column; gap:12px; }
            .trust-list { gap:12px; }
        }

/* roulang page: category1 */
:root {
            --bg:#F4F5F7;
            --card:#FFFFFF;
            --text:#1A1D23;
            --muted:#5F6672;
            --brand:#E8590C;
            --brand-dark:#C8400A;
            --accent:#0EA5A4;
            --accent-dark:#0B7F7C;
            --line:#E2E5EA;
            --success:#2B9B6E;
            --warn:#F4B740;
            --danger:#D64545;
            --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
            --shadow-sm:0 2px 8px rgba(0,0,0,.04);
            --shadow-md:0 12px 28px rgba(0,0,0,.10);
            --radius-card:12px;
            --radius-btn:10px;
            --radius-input:8px;
        }
        html { scroll-behavior:smooth; }
        body { font-family:var(--font-sans); background:var(--bg); color:var(--text); line-height:1.7; font-size:16px; }
        a { color:var(--brand); text-decoration:none; transition:color .2s; }
        a:hover { color:var(--brand-dark); }
        img { max-width:100%; display:block; }
        button, input { font-family:inherit; }
        .container { max-width:1200px; margin:0 auto; padding:0 24px; }
        section { padding:64px 0; }
        .section-header { text-align:center; max-width:720px; margin:0 auto 40px; }
        .section-header h2 { font-size:28px; margin-bottom:12px; }
        .section-header p { color:var(--muted); font-size:16px; }
        /* 导航 */
        .site-header { position:sticky; top:0; z-index:100; background:rgba(255,255,255,.96); border-bottom:1px solid var(--line); }
        .nav-wrap { display:flex; align-items:center; justify-content:space-between; height:64px; }
        .logo { font-size:24px; font-weight:700; color:var(--brand); display:flex; align-items:center; gap:8px; }
        .logo .logo-icon { width:32px; height:32px; background:var(--brand); border-radius:8px; display:inline-block; position:relative; }
        .logo .logo-icon::after { content:''; position:absolute; left:8px; top:8px; width:16px; height:16px; background:#fff; border-radius:50%; opacity:.9; }
        .main-nav { display:flex; gap:24px; }
        .nav-link { color:var(--text); font-size:15px; font-weight:500; padding:22px 0 20px; border-bottom:2px solid transparent; transition:color .2s, border-color .2s; }
        .nav-link:hover { color:var(--brand); }
        .nav-link.active { color:var(--brand); border-bottom-color:var(--brand); }
        .nav-cta { display:flex; gap:8px; align-items:center; }
        .menu-toggle { display:none; background:none; border:none; font-size:28px; color:var(--text); cursor:pointer; }
        /* 按钮 */
        .btn { display:inline-flex; align-items:center; justify-content:center; padding:12px 24px; border-radius:var(--radius-btn); font-weight:600; font-size:16px; border:1px solid transparent; cursor:pointer; transition:background .2s, color .2s, border-color .2s, box-shadow .2s; }
        .btn-primary { background:var(--brand); color:#fff; }
        .btn-primary:hover { background:var(--brand-dark); color:#fff; box-shadow:var(--shadow-sm); }
        .btn-outline { background:transparent; border-color:var(--brand); color:var(--brand); }
        .btn-outline:hover { background:var(--brand); color:#fff; }
        .btn-white { background:#fff; color:var(--text); }
        .btn-white:hover { background:var(--bg); }
        .btn-lg { padding:16px 32px; font-size:18px; }
        .btn-sm { padding:8px 16px; font-size:14px; }
        /* 分类标题带 */
        .cat-hero { padding:48px 0 32px; background:#fff; border-bottom:1px solid var(--line); }
        .breadcrumb { margin-bottom:12px; font-size:14px; color:var(--muted); }
        .breadcrumb a { color:var(--muted); }
        .breadcrumb a:hover { color:var(--brand); }
        .cat-hero h1 { font-size:36px; margin-bottom:8px; }
        .cat-hero .cat-desc { font-size:16px; color:var(--muted); max-width:680px; margin-bottom:20px; }
        .cat-hero .hero-actions { display:flex; gap:12px; flex-wrap:wrap; }
        /* 防护能力网格 */
        .capability-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
        .cap-card { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); padding:24px; transition:box-shadow .2s; }
        .cap-card:hover { box-shadow:var(--shadow-md); }
        .cap-card .icon { width:48px; height:48px; margin-bottom:16px; background:var(--bg); border-radius:10px; display:flex; align-items:center; justify-content:center; font-size:24px; }
        .cap-card h3 { font-size:18px; margin-bottom:8px; }
        .cap-card p { font-size:14px; color:var(--muted); margin-bottom:0; }
        /* 场景步骤 */
        .scene-steps { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
        .step-card { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); padding:24px; position:relative; }
        .step-num { font-size:32px; font-weight:700; color:var(--brand); opacity:.2; position:absolute; top:16px; right:20px; }
        .step-card h3 { font-size:20px; margin-bottom:12px; }
        .step-card p { font-size:15px; color:var(--muted); margin-bottom:0; }
        /* 安全策略要点 */
        .policy-list { display:grid; grid-template-columns:1fr 1fr; gap:16px 24px; }
        .policy-item { display:flex; gap:12px; align-items:flex-start; }
        .policy-item .check { width:24px; height:24px; border-radius:50%; background:var(--success); color:#fff; display:flex; align-items:center; justify-content:center; font-size:14px; flex-shrink:0; }
        .policy-item p { margin:0; font-size:15px; }
        /* 文章列表 */
        .article-list { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
        .article-card { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); overflow:hidden; transition:box-shadow .2s; }
        .article-card:hover { box-shadow:var(--shadow-md); }
        .article-card img { width:100%; height:180px; object-fit:cover; }
        .article-card .card-body { padding:20px; }
        .article-card h3 { font-size:18px; margin-bottom:8px; }
        .article-card p { font-size:14px; color:var(--muted); margin-bottom:12px; }
        .article-card .meta { display:flex; gap:12px; font-size:12px; color:var(--muted); }
        .article-card a.stretched-link { color:var(--brand); font-weight:600; }
        /* FAQ */
        .faq-list { max-width:800px; margin:0 auto; }
        .faq-item { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); margin-bottom:12px; overflow:hidden; }
        .faq-question { padding:16px 20px; font-weight:600; cursor:pointer; display:flex; justify-content:space-between; align-items:center; background:none; border:none; width:100%; text-align:left; font-size:16px; color:var(--text); }
        .faq-question span.icon { font-size:24px; line-height:1; transition:transform .2s; }
        .faq-item.open .faq-question span.icon { transform:rotate(45deg); }
        .faq-answer { max-height:0; overflow:hidden; transition:max-height .3s ease; padding:0 20px; }
        .faq-item.open .faq-answer { max-height:300px; padding-bottom:16px; }
        .faq-answer p { margin:0; color:var(--muted); }
        /* 下载 CTA */
        .download-cta { background:var(--accent); color:#fff; }
        .download-cta .cta-inner { text-align:center; padding:32px 24px; }
        .download-cta h2 { font-size:28px; margin-bottom:12px; color:#fff; }
        .download-cta p { font-size:16px; max-width:600px; margin:0 auto 24px; opacity:.9; }
        /* 页脚 */
        .site-footer { background:#1F2329; color:#E5E7EB; padding:48px 0 24px; }
        .footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; margin-bottom:32px; }
        .footer-col h4 { color:#fff; font-size:18px; margin-bottom:16px; }
        .footer-col p { color:#C9CDD3; font-size:14px; }
        .footer-col ul { list-style:none; padding:0; margin:0; }
        .footer-col ul li { margin-bottom:8px; }
        .footer-col ul a { color:#C9CDD3; font-size:14px; transition:color .2s; }
        .footer-col ul a:hover { color:var(--accent); }
        .footer-bottom { border-top:1px solid #3A3F47; padding-top:16px; text-align:center; color:#9CA3AF; font-size:13px; }
        /* 响应式 */
        @media (max-width:1024px) {
            .capability-grid { grid-template-columns:repeat(2,1fr); }
            .scene-steps { grid-template-columns:1fr 1fr; }
        }
        @media (max-width:768px) {
            .main-nav { display:none; position:fixed; top:64px; left:0; right:0; background:#fff; flex-direction:column; padding:20px; box-shadow:var(--shadow-md); z-index:99; }
            .main-nav.open { display:flex; }
            .main-nav .nav-link { padding:12px 0; border-bottom:1px solid var(--line); }
            .menu-toggle { display:block; }
            .nav-cta { display:none; }
            .cat-hero h1 { font-size:28px; }
            .capability-grid { grid-template-columns:1fr; }
            .scene-steps { grid-template-columns:1fr; }
            .article-list { grid-template-columns:1fr; }
            .policy-list { grid-template-columns:1fr; }
            .footer-grid { grid-template-columns:1fr 1fr; }
        }
        @media (max-width:520px) {
            .footer-grid { grid-template-columns:1fr; }
            .cat-hero { padding:32px 0 24px; }
            .cat-hero h1 { font-size:24px; }
        }

/* roulang page: article */
:root {
    --bg:#F4F5F7;
    --card:#FFFFFF;
    --text:#1A1D23;
    --muted:#5F6672;
    --brand:#E8590C;
    --brand-dark:#C8400A;
    --accent:#0EA5A4;
    --accent-dark:#0B7F7C;
    --line:#E2E5EA;
    --success:#2B9B6E;
    --warn:#F4B740;
    --danger:#D64545;
    --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
    --shadow-sm:0 2px 8px rgba(0,0,0,.04);
    --shadow-md:0 12px 28px rgba(0,0,0,.10);
    --radius-card:12px;
    --radius-btn:10px;
    --radius-input:8px;
}
* { box-sizing:border-box; margin:0; padding:0; }
html { scroll-behavior:smooth; }
body { font-family:var(--font-sans); background:var(--bg); color:var(--text); line-height:1.7; font-size:16px; -webkit-font-smoothing:antialiased; }
a { color:var(--brand); text-decoration:none; transition:color .2s; }
a:hover { color:var(--brand-dark); }
img { max-width:100%; display:block; }
button, input { font-family:inherit; }
ul, ol { list-style-position:inside; }
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
section { padding:64px 0; }
.section-header { text-align:center; max-width:720px; margin:0 auto 40px; }
.section-header h2 { font-size:28px; margin-bottom:12px; font-weight:700; }
.section-header p { color:var(--muted); font-size:16px; }

/* 导航 */
.site-header { position:sticky; top:0; z-index:100; background:rgba(255,255,255,.96); border-bottom:1px solid var(--line); backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px); }
.nav-wrap { display:flex; align-items:center; justify-content:space-between; height:64px; }
.logo { font-size:24px; font-weight:700; color:var(--brand); display:flex; align-items:center; gap:8px; }
.logo:hover { color:var(--brand-dark); }
.logo .logo-icon { width:32px; height:32px; background:var(--brand); border-radius:8px; display:inline-block; position:relative; flex-shrink:0; }
.logo .logo-icon::after { content:''; position:absolute; left:8px; top:8px; width:16px; height:16px; background:#fff; border-radius:50%; opacity:.95; }
.main-nav { display:flex; gap:24px; align-items:center; }
.nav-link { color:var(--text); font-size:15px; font-weight:500; padding:22px 0 20px; border-bottom:2px solid transparent; transition:color .2s, border-color .2s; }
.nav-link:hover { color:var(--brand); }
.nav-link.active { color:var(--brand); border-bottom-color:var(--brand); }
.nav-cta { display:flex; gap:8px; align-items:center; }
.nav-cta .btn { padding:8px 18px; font-size:14px; white-space:nowrap; }
.menu-toggle { display:none; background:none; border:none; font-size:28px; color:var(--text); cursor:pointer; width:40px; height:40px; align-items:center; justify-content:center; border-radius:8px; transition:background .2s; }
.menu-toggle:hover { background:var(--bg); color:var(--brand); }

/* 按钮 */
.btn { display:inline-flex; align-items:center; justify-content:center; padding:12px 24px; border-radius:var(--radius-btn); font-weight:600; font-size:16px; border:1px solid transparent; cursor:pointer; transition:background .2s, color .2s, border-color .2s, box-shadow .2s, transform .2s; }
.btn:focus-visible { outline:2px solid var(--brand); outline-offset:2px; }
.btn-primary { background:var(--brand); color:#fff; border-color:var(--brand); }
.btn-primary:hover { background:var(--brand-dark); border-color:var(--brand-dark); color:#fff; box-shadow:var(--shadow-sm); }
.btn-outline { background:transparent; border-color:var(--brand); color:var(--brand); }
.btn-outline:hover { background:var(--brand); color:#fff; }
.btn-white { background:#fff; color:var(--text); border-color:#fff; }
.btn-white:hover { background:var(--bg); }
.btn-lg { padding:16px 32px; font-size:18px; }
.btn-sm { padding:8px 16px; font-size:14px; }
.btn-accent { background:var(--accent); color:#fff; border-color:var(--accent); }
.btn-accent:hover { background:var(--accent-dark); border-color:var(--accent-dark); color:#fff; }

/* 文章页面包屑 */
.article-breadcrumb { background:var(--card); border-bottom:1px solid var(--line); padding:16px 0; }
.breadcrumb-nav { display:flex; align-items:center; gap:8px; flex-wrap:wrap; font-size:14px; color:var(--muted); }
.breadcrumb-nav a { color:var(--muted); }
.breadcrumb-nav a:hover { color:var(--brand); }
.breadcrumb-nav .separator { color:var(--line); user-select:none; }
.breadcrumb-nav .current { color:var(--brand); font-weight:500; }

/* 文章主区域 */
.article-main { padding:48px 0 64px; }
.article-layout { display:grid; grid-template-columns:minmax(0,1fr) 320px; gap:40px; align-items:start; }
.article-content-area { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); padding:40px 48px; box-shadow:var(--shadow-sm); }
.article-category-tag { display:inline-flex; align-items:center; gap:6px; background:rgba(232,89,12,.08); color:var(--brand); font-size:13px; font-weight:600; padding:6px 14px; border-radius:999px; margin-bottom:16px; }
.article-category-tag .dot { width:6px; height:6px; background:var(--brand); border-radius:50%; }
.article-title { font-size:32px; font-weight:700; line-height:1.35; margin-bottom:20px; color:var(--text); }
.article-meta { display:flex; flex-wrap:wrap; gap:20px; align-items:center; padding-bottom:24px; border-bottom:1px solid var(--line); margin-bottom:32px; font-size:14px; color:var(--muted); }
.article-meta .meta-item { display:flex; align-items:center; gap:6px; }
.article-meta .meta-icon { width:18px; height:18px; background:var(--bg); border-radius:4px; display:inline-flex; align-items:center; justify-content:center; font-size:11px; color:var(--brand); }
.article-body { font-size:16px; line-height:1.85; color:var(--text); }
.article-body h2 { font-size:24px; font-weight:700; margin:32px 0 16px; color:var(--text); }
.article-body h3 { font-size:20px; font-weight:600; margin:28px 0 14px; color:var(--text); }
.article-body p { margin-bottom:16px; }
.article-body blockquote { border-left:4px solid var(--brand); background:rgba(232,89,12,.04); padding:16px 20px; margin:24px 0; border-radius:0 8px 8px 0; color:var(--muted); font-size:15px; }
.article-body ul, .article-body ol { margin:16px 0 16px 4px; }
.article-body ul li, .article-body ol li { margin-bottom:8px; padding-left:4px; }
.article-body img { border-radius:var(--radius-card); margin:24px 0; box-shadow:var(--shadow-sm); width:100%; height:auto; object-fit:cover; }
.article-body code { background:var(--bg); padding:2px 8px; border-radius:4px; font-size:14px; font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace; color:var(--brand-dark); }
.article-body pre { background:#1F2329; color:#E2E5EA; padding:20px; border-radius:var(--radius-card); overflow-x:auto; margin:24px 0; }
.article-body pre code { background:transparent; color:#E2E5EA; padding:0; }
.article-body a { color:var(--brand); font-weight:500; border-bottom:1px dashed var(--brand); }
.article-body a:hover { color:var(--brand-dark); border-bottom-color:var(--brand-dark); }
.article-body strong { font-weight:700; color:var(--text); }
.article-body hr { border:none; border-top:1px solid var(--line); margin:32px 0; }

/* 文章标签 */
.article-tags { display:flex; flex-wrap:wrap; gap:10px; margin-top:32px; padding-top:24px; border-top:1px solid var(--line); }
.article-tags .tag-label { font-size:14px; color:var(--muted); font-weight:500; display:flex; align-items:center; margin-right:4px; }
.article-tags .tag-item { display:inline-flex; align-items:center; background:var(--bg); color:var(--text); font-size:13px; font-weight:500; padding:6px 14px; border-radius:999px; border:1px solid var(--line); transition:all .2s; cursor:default; }
.article-tags .tag-item:hover { border-color:var(--brand); color:var(--brand); background:rgba(232,89,12,.05); }

/* 上一篇/下一篇 */
.post-navigation { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-top:32px; padding-top:24px; border-top:1px solid var(--line); }
.post-navigation a { display:flex; flex-direction:column; gap:4px; background:var(--bg); border:1px solid var(--line); border-radius:var(--radius-card); padding:16px 20px; transition:all .2s; }
.post-navigation a:hover { border-color:var(--brand); background:rgba(232,89,12,.04); box-shadow:var(--shadow-sm); }
.post-navigation .nav-label { font-size:12px; color:var(--muted); font-weight:600; text-transform:uppercase; letter-spacing:.5px; }
.post-navigation .nav-title { font-size:15px; font-weight:600; color:var(--text); }
.post-navigation a:hover .nav-title { color:var(--brand); }
.post-navigation .next-post { text-align:right; align-items:flex-end; }

/* 侧边栏 */
.article-sidebar { display:flex; flex-direction:column; gap:24px; position:sticky; top:88px; }
.sidebar-card { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); padding:24px; box-shadow:var(--shadow-sm); }
.sidebar-card h3 { font-size:18px; font-weight:700; margin-bottom:12px; }
.sidebar-card p { font-size:14px; color:var(--muted); margin-bottom:16px; }
.sidebar-download { background:linear-gradient(160deg,#0EA5A4 0%,#0B7F7C 100%); border:none; color:#fff; }
.sidebar-download h3 { color:#fff; }
.sidebar-download p { color:rgba(255,255,255,.85); }
.sidebar-download .btn-white { margin-top:4px; }
.sidebar-stats { display:flex; gap:16px; }
.sidebar-stats .stat-mini { flex:1; text-align:center; background:var(--bg); border-radius:8px; padding:12px; }
.sidebar-stats .stat-mini .num { font-size:20px; font-weight:700; color:var(--brand); display:block; }
.sidebar-stats .stat-mini .label-text { font-size:12px; color:var(--muted); }

/* 相关推荐 */
.related-section { background:var(--bg); }
.related-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.related-card { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); overflow:hidden; transition:box-shadow .2s, transform .2s; display:flex; flex-direction:column; }
.related-card:hover { box-shadow:var(--shadow-md); transform:translateY(-2px); }
.related-card .card-img { aspect-ratio:16/9; background-size:cover; background-position:center; }
.related-card .card-body { padding:20px; flex:1; display:flex; flex-direction:column; }
.related-card .card-title { font-size:16px; font-weight:600; margin-bottom:8px; color:var(--text); line-height:1.5; }
.related-card .card-desc { font-size:14px; color:var(--muted); margin-bottom:12px; flex:1; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.related-card .card-meta { display:flex; justify-content:space-between; align-items:center; font-size:12px; color:var(--muted); }
.related-card .card-meta .time { display:flex; align-items:center; gap:4px; }
.related-card .card-link { font-weight:600; font-size:13px; color:var(--brand); }
.related-card:hover .card-link { color:var(--brand-dark); }

/* 返回入口 */
.back-entry { text-align:center; padding:20px 0 32px; }
.back-entry .btn { min-width:200px; }

/* 空态 */
.empty-state { text-align:center; padding:40px 20px; color:var(--muted); }
.empty-state .empty-icon { width:56px; height:56px; background:var(--bg); border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:28px; margin:0 auto 16px; }
.empty-state p { font-size:15px; margin-bottom:16px; }

/* 页脚 */
.site-footer { background:#1F2329; color:#C5C9D1; padding:64px 0 0; }
.footer-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:32px; padding-bottom:40px; border-bottom:1px solid rgba(255,255,255,.08); }
.footer-col h4 { color:#fff; font-size:16px; font-weight:700; margin-bottom:16px; }
.footer-col p { font-size:14px; line-height:1.7; color:#9CA1AA; }
.footer-col ul { list-style:none; }
.footer-col ul li { margin-bottom:10px; }
.footer-col ul li a { color:#9CA1AA; font-size:14px; transition:color .2s; }
.footer-col ul li a:hover { color:var(--accent); }
.footer-bottom { text-align:center; padding:20px 0; font-size:13px; color:#7A7F88; border-top:1px solid rgba(255,255,255,.06); }

/* 移动端抽屉菜单 */
.mobile-menu-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,.35); z-index:199; opacity:0; transition:opacity .25s; }
.mobile-menu-overlay.open { opacity:1; }
.mobile-drawer { position:fixed; top:0; right:-100%; width:min(320px,85vw); height:100vh; background:#fff; z-index:200; padding:24px; display:flex; flex-direction:column; transition:right .3s ease; box-shadow:var(--shadow-md); overflow-y:auto; }
.mobile-drawer.open { right:0; }
.mobile-drawer-header { display:flex; align-items:center; justify-content:space-between; margin-bottom:32px; }
.mobile-drawer-header .logo { font-size:20px; }
.mobile-drawer-close { background:none; border:none; font-size:28px; color:var(--text); cursor:pointer; width:36px; height:36px; display:flex; align-items:center; justify-content:center; border-radius:50%; transition:background .2s; }
.mobile-drawer-close:hover { background:var(--bg); }
.mobile-drawer-nav { display:flex; flex-direction:column; gap:4px; }
.mobile-drawer-nav .nav-link { color:var(--text); font-size:18px; font-weight:600; padding:12px 16px; border:none; border-radius:8px; transition:background .2s, color .2s; }
.mobile-drawer-nav .nav-link:hover { background:rgba(232,89,12,.06); color:var(--brand); }
.mobile-drawer-nav .nav-link.active { color:var(--brand); background:rgba(232,89,12,.06); }
.mobile-drawer-cta { margin-top:24px; padding-top:24px; border-top:1px solid var(--line); display:flex; flex-direction:column; gap:10px; }
.mobile-drawer-cta .btn { width:100%; }

/* 响应式 */
@media (max-width:1024px) {
    .article-layout { grid-template-columns:1fr; }
    .article-sidebar { position:static; flex-direction:row; flex-wrap:wrap; }
    .sidebar-card { flex:1; min-width:260px; }
    .related-grid { grid-template-columns:repeat(2,1fr); }
    .footer-grid { grid-template-columns:repeat(2,1fr); }
}
@media (max-width:768px) {
    section { padding:48px 0; }
    .container { padding:0 16px; }
    .main-nav { display:none; }
    .nav-cta { display:none; }
    .menu-toggle { display:flex; }
    .article-content-area { padding:24px 20px; }
    .article-title { font-size:26px; }
    .article-body { font-size:15px; line-height:1.75; }
    .article-body h2 { font-size:22px; }
    .article-body h3 { font-size:18px; }
    .post-navigation { grid-template-columns:1fr; }
    .post-navigation .next-post { text-align:left; align-items:flex-start; }
    .related-grid { grid-template-columns:1fr; }
    .article-sidebar { flex-direction:column; }
    .footer-grid { grid-template-columns:1fr 1fr; gap:24px; }
}
@media (max-width:520px) {
    .article-content-area { padding:20px 16px; border-radius:8px; }
    .article-title { font-size:22px; }
    .article-meta { gap:12px; flex-wrap:wrap; }
    .article-meta .meta-item { font-size:12px; }
    .related-card .card-img { aspect-ratio:16/10; }
    .footer-grid { grid-template-columns:1fr; }
    .post-navigation a { padding:12px 16px; }
    .post-navigation .nav-title { font-size:14px; }
}

/* roulang page: category3 */
:root {
            --bg: #F4F5F7;
            --card: #FFFFFF;
            --text: #1A1D23;
            --muted: #5F6672;
            --brand: #E8590C;
            --brand-dark: #C8400A;
            --accent: #0EA5A4;
            --accent-dark: #0B7F7C;
            --line: #E2E5EA;
            --success: #2B9B6E;
            --warn: #F4B740;
            --danger: #D64545;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, .04);
            --shadow-md: 0 12px 28px rgba(0, 0, 0, .10);
            --radius-card: 12px;
            --radius-btn: 10px;
            --radius-input: 8px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: var(--brand);
            text-decoration: none;
            transition: color .2s;
        }
        a:hover {
            color: var(--brand-dark);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        section {
            padding: 64px 0;
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 40px;
        }
        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--muted);
            font-size: 16px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .96);
            border-bottom: 1px solid var(--line);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }
        .logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--brand);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--brand);
            border-radius: 8px;
            display: inline-block;
            position: relative;
        }
        .logo .logo-icon::after {
            content: '';
            position: absolute;
            left: 8px;
            top: 8px;
            width: 16px;
            height: 16px;
            background: #fff;
            border-radius: 50%;
            opacity: .9;
        }
        .main-nav {
            display: flex;
            gap: 24px;
        }
        .nav-link {
            color: var(--text);
            font-size: 15px;
            font-weight: 500;
            padding: 22px 0 20px;
            border-bottom: 2px solid transparent;
            transition: color .2s, border-color .2s;
        }
        .nav-link:hover {
            color: var(--brand);
        }
        .nav-link.active {
            color: var(--brand);
            border-bottom-color: var(--brand);
        }
        .nav-cta {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 28px;
            color: var(--text);
            cursor: pointer;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 99;
            padding: 24px;
            flex-direction: column;
            gap: 16px;
            overflow-y: auto;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            font-size: 18px;
            color: var(--text);
            padding: 12px 0;
            border-bottom: 1px solid var(--line);
            font-weight: 500;
        }
        .mobile-menu a:hover {
            color: var(--brand);
        }
        .mobile-menu .btn {
            margin-top: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 16px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: background .2s, color .2s, border-color .2s, box-shadow .2s;
        }
        .btn:focus,
        .btn:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--brand);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--brand-dark);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--brand);
            color: var(--brand);
        }
        .btn-outline:hover {
            background: var(--brand);
            color: #fff;
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }
        .btn-white {
            background: #fff;
            color: var(--text);
            border-color: var(--line);
        }
        .btn-white:hover {
            background: var(--bg);
        }
        .btn-lg {
            padding: 16px 32px;
            font-size: 18px;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }

        /* 分类标题带 */
        .category-header {
            background: #fff;
            border-bottom: 1px solid var(--line);
            padding: 48px 0;
        }
        .category-header-grid {
            display: grid;
            grid-template-columns: 1fr 360px;
            gap: 40px;
            align-items: center;
        }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 16px;
        }
        .breadcrumb-custom a {
            color: var(--muted);
        }
        .breadcrumb-custom a:hover {
            color: var(--brand);
        }
        .breadcrumb-custom .sep {
            color: #B8BDC5;
        }
        .breadcrumb-custom .current {
            color: var(--text);
            font-weight: 500;
        }
        .category-header h1 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .category-header .cat-desc {
            font-size: 16px;
            color: var(--muted);
            margin-bottom: 24px;
            max-width: 560px;
        }
        .category-header .cat-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .category-header-visual {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            aspect-ratio: 4/3;
            background-size: cover;
            background-position: center;
            border: 1px solid var(--line);
        }

        /* 同步能力 Bento */
        .sync-bento-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            grid-template-rows: auto auto;
            gap: 20px;
        }
        .sync-bento-card {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: box-shadow .2s;
        }
        .sync-bento-card:hover {
            box-shadow: var(--shadow-md);
        }
        .sync-bento-card.large {
            grid-row: span 2;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .sync-bento-card .icon {
            width: 48px;
            height: 48px;
            margin-bottom: 16px;
            background: var(--bg);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
        }
        .sync-bento-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .sync-bento-card p {
            font-size: 15px;
            color: var(--muted);
            margin-bottom: 0;
        }
        .sync-bento-card .highlight-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--accent-dark);
            background: rgba(14, 165, 164, .08);
            padding: 4px 10px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        /* 设备列表 */
        .device-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }
        .device-card {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            padding: 20px;
            text-align: center;
            transition: box-shadow .2s;
        }
        .device-card:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--accent);
        }
        .device-card .device-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 12px;
            background: var(--bg);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
        }
        .device-card .device-name {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .device-card .device-desc {
            font-size: 13px;
            color: var(--muted);
        }

        /* 部署流程 */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .step-card {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            padding: 24px;
            position: relative;
        }
        .step-card .step-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 12px;
            line-height: 1;
        }
        .step-card h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 15px;
            color: var(--muted);
            margin-bottom: 0;
        }
        .step-card .step-arrow {
            position: absolute;
            right: -18px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 20px;
            color: var(--accent);
            z-index: 2;
        }

        /* 效率场景 */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .scene-card {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: box-shadow .2s;
        }
        .scene-card:hover {
            box-shadow: var(--shadow-md);
        }
        .scene-card .scene-img {
            aspect-ratio: 16/9;
            background-size: cover;
            background-position: center;
        }
        .scene-card .scene-body {
            padding: 20px;
        }
        .scene-card .scene-body h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .scene-card .scene-body p {
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 12px;
        }
        .scene-card .scene-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--brand);
            background: rgba(232, 89, 12, .06);
            padding: 3px 10px;
            border-radius: 999px;
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-list .accordion-item {
            border: 1px solid var(--line);
            border-radius: 10px !important;
            margin-bottom: 12px;
            overflow: hidden;
            background: var(--card);
        }
        .faq-list .accordion-button {
            font-size: 16px;
            font-weight: 600;
            padding: 18px 24px;
            background: var(--card);
            color: var(--text);
            box-shadow: none !important;
        }
        .faq-list .accordion-button:not(.collapsed) {
            background: var(--card);
            color: var(--brand);
        }
        .faq-list .accordion-button:focus {
            outline: 2px solid var(--brand);
            outline-offset: -2px;
        }
        .faq-list .accordion-button::after {
            flex-shrink: 0;
        }
        .faq-list .accordion-body {
            padding: 16px 24px 20px;
            font-size: 15px;
            color: var(--muted);
        }

        /* CTA 底部 */
        .cta-banner {
            background: var(--accent);
            border-radius: 16px;
            padding: 48px;
            text-align: center;
            color: #fff;
        }
        .cta-banner h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }
        .cta-banner p {
            font-size: 16px;
            margin-bottom: 24px;
            opacity: .95;
        }
        .cta-banner .cta-actions {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* 页脚 */
        .site-footer {
            background: #1F2329;
            color: #B8BDC5;
            padding: 48px 0 24px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .site-footer p {
            font-size: 14px;
            line-height: 1.6;
            color: #B8BDC5;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 8px;
        }
        .site-footer ul li a {
            color: #B8BDC5;
            font-size: 14px;
            transition: color .2s;
        }
        .site-footer ul li a:hover {
            color: var(--accent);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding-top: 20px;
            font-size: 13px;
            text-align: center;
            color: #8A909A;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .sync-bento-grid {
                grid-template-columns: 1fr 1fr;
                grid-template-rows: auto;
            }
            .sync-bento-card.large {
                grid-column: 1 / -1;
                grid-row: auto;
            }
            .device-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .scene-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-header-grid {
                grid-template-columns: 1fr 280px;
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .main-nav,
            .nav-cta .btn {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            section {
                padding: 40px 0;
            }
            .category-header {
                padding: 36px 0;
            }
            .category-header-grid {
                grid-template-columns: 1fr;
            }
            .category-header-visual {
                order: -1;
                aspect-ratio: 16/8;
            }
            .category-header h1 {
                font-size: 26px;
            }
            .sync-bento-grid {
                grid-template-columns: 1fr;
            }
            .sync-bento-card.large {
                grid-column: auto;
            }
            .device-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .step-card .step-arrow {
                display: none;
            }
            .scene-grid {
                grid-template-columns: 1fr;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .cta-banner {
                padding: 32px 20px;
            }
            .cta-banner h2 {
                font-size: 22px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .device-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
            }
            .category-header .cat-actions {
                flex-direction: column;
            }
            .category-header .cat-actions .btn {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --bg:#F4F5F7;
            --card:#FFFFFF;
            --text:#1A1D23;
            --muted:#5F6672;
            --brand:#E8590C;
            --brand-dark:#C8400A;
            --accent:#0EA5A4;
            --accent-dark:#0B7F7C;
            --line:#E2E5EA;
            --success:#2B9B6E;
            --warn:#F4B740;
            --danger:#D64545;
            --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
            --shadow-sm:0 2px 8px rgba(0,0,0,.04);
            --shadow-md:0 12px 28px rgba(0,0,0,.10);
            --radius-card:12px;
            --radius-btn:10px;
            --radius-input:8px;
            --footer-bg:#1F2329;
        }
        html { scroll-behavior:smooth; }
        body { font-family:var(--font-sans); background:var(--bg); color:var(--text); line-height:1.7; font-size:16px; margin:0; }
        a { color:var(--brand); text-decoration:none; transition:color .2s, border-color .2s; }
        a:hover { color:var(--brand-dark); }
        a:focus-visible { outline:2px solid var(--brand); outline-offset:2px; }
        img { max-width:100%; display:block; }
        button, input { font-family:inherit; }
        button:focus-visible, input:focus-visible { outline:2px solid var(--brand); outline-offset:2px; }
        .container { max-width:1200px; margin:0 auto; padding:0 24px; }
        section { padding:64px 0; }
        .section-header { text-align:center; max-width:720px; margin:0 auto 40px; }
        .section-header h2 { font-size:28px; margin-bottom:12px; font-weight:700; }
        .section-header p { color:var(--muted); font-size:16px; margin:0; }

        /* ========== Header ========== */
        .site-header { position:sticky; top:0; z-index:100; background:rgba(255,255,255,.96); border-bottom:1px solid var(--line); backdrop-filter:blur(8px); }
        .nav-wrap { display:flex; align-items:center; justify-content:space-between; height:64px; gap:16px; }
        .logo { font-size:24px; font-weight:700; color:var(--brand); display:flex; align-items:center; gap:8px; flex-shrink:0; }
        .logo .logo-icon { width:32px; height:32px; background:var(--brand); border-radius:8px; display:inline-block; position:relative; flex-shrink:0; }
        .logo .logo-icon::after { content:''; position:absolute; left:8px; top:8px; width:16px; height:16px; background:#fff; border-radius:50%; opacity:.9; }
        .logo span { color:var(--text); font-size:20px; }
        .main-nav { display:flex; gap:24px; align-items:center; }
        .nav-link { color:var(--text); font-size:15px; font-weight:500; padding:22px 0 20px; border-bottom:2px solid transparent; transition:color .2s, border-color .2s; }
        .nav-link:hover { color:var(--brand); }
        .nav-link.active { color:var(--brand); border-bottom-color:var(--brand); }
        .nav-cta { display:flex; gap:8px; align-items:center; flex-shrink:0; }
        .menu-toggle { display:none; background:none; border:none; font-size:28px; color:var(--text); cursor:pointer; padding:4px 8px; line-height:1; }

        /* ========== Buttons ========== */
        .btn { display:inline-flex; align-items:center; justify-content:center; padding:12px 24px; border-radius:var(--radius-btn); font-weight:600; font-size:16px; border:1px solid transparent; cursor:pointer; transition:background .2s, color .2s, border-color .2s, box-shadow .2s, transform .15s; text-align:center; }
        .btn:active { transform:scale(.97); }
        .btn-primary { background:var(--brand); color:#fff; }
        .btn-primary:hover { background:var(--brand-dark); color:#fff; box-shadow:var(--shadow-sm); }
        .btn-outline { background:transparent; border-color:var(--brand); color:var(--brand); }
        .btn-outline:hover { background:var(--brand); color:#fff; }
        .btn-white { background:#fff; color:var(--text); }
        .btn-white:hover { background:var(--bg); }
        .btn-lg { padding:16px 32px; font-size:18px; }
        .btn-sm { padding:8px 16px; font-size:14px; }
        .btn-accent { background:var(--accent); color:#fff; }
        .btn-accent:hover { background:var(--accent-dark); color:#fff; }

        /* ========== Category Title Band ========== */
        .category-band { background:#fff; border-bottom:1px solid var(--line); padding:40px 0 32px; }
        .breadcrumb-row { display:flex; align-items:center; gap:8px; font-size:14px; color:var(--muted); margin-bottom:12px; flex-wrap:wrap; }
        .breadcrumb-row a { color:var(--muted); }
        .breadcrumb-row a:hover { color:var(--brand); }
        .breadcrumb-sep { color:var(--line); }
        .category-band h1 { font-size:32px; font-weight:700; margin-bottom:10px; line-height:1.3; }
        .category-band .band-desc { font-size:16px; color:var(--muted); margin-bottom:20px; max-width:640px; }
        .band-actions { display:flex; gap:12px; flex-wrap:wrap; }

        /* ========== Filter Tags ========== */
        .filter-tags { display:flex; gap:10px; flex-wrap:wrap; margin-bottom:32px; }
        .filter-tag { padding:8px 18px; border-radius:20px; font-size:14px; font-weight:500; cursor:pointer; background:var(--bg); border:1px solid var(--line); color:var(--muted); transition:all .2s; }
        .filter-tag:hover { border-color:var(--brand); color:var(--brand); }
        .filter-tag.active { background:var(--brand); color:#fff; border-color:var(--brand); }
        .filter-tag:focus-visible { outline:2px solid var(--brand); outline-offset:2px; }

        /* ========== Extension Grid ========== */
        .extension-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
        .extension-card { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); padding:24px; transition:box-shadow .2s, transform .15s; display:flex; flex-direction:column; }
        .extension-card:hover { box-shadow:var(--shadow-md); transform:translateY(-2px); }
        .extension-card .ext-icon { width:48px; height:48px; margin-bottom:16px; background:var(--bg); border-radius:10px; display:flex; align-items:center; justify-content:center; font-size:24px; flex-shrink:0; }
        .extension-card h3 { font-size:18px; font-weight:600; margin-bottom:6px; }
        .extension-card p { font-size:14px; color:var(--muted); margin-bottom:14px; flex:1; }
        .ext-status { align-self:flex-start; padding:4px 12px; border-radius:12px; font-size:12px; font-weight:600; background:var(--bg); color:var(--muted); }
        .ext-status.recommend { background:#FFF3EA; color:var(--brand); }
        .ext-status.free { background:#E8F7F0; color:var(--success); }
        .ext-status.new { background:#EAF6F6; color:var(--accent-dark); }

        /* ========== Steps ========== */
        .steps-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
        .step-card { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); padding:28px 24px; text-align:center; position:relative; transition:box-shadow .2s; }
        .step-card:hover { box-shadow:var(--shadow-sm); }
        .step-num { font-size:40px; font-weight:700; color:var(--line); margin-bottom:12px; display:block; }
        .step-card h3 { font-size:18px; font-weight:600; margin-bottom:8px; }
        .step-card p { font-size:14px; color:var(--muted); margin:0; }

        /* ========== Developer Entry ========== */
        .dev-entry { display:flex; align-items:center; gap:24px; background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); padding:32px; transition:box-shadow .2s; }
        .dev-entry:hover { box-shadow:var(--shadow-sm); }
        .dev-icon { width:56px; height:56px; background:var(--bg); border-radius:12px; display:flex; align-items:center; justify-content:center; font-size:28px; flex-shrink:0; }
        .dev-content { flex:1; }
        .dev-content h3 { font-size:20px; font-weight:600; margin-bottom:6px; }
        .dev-content p { font-size:15px; color:var(--muted); margin:0 0 12px; }
        .dev-content .btn { font-size:14px; }

        /* ========== Article Cards (CMS) ========== */
        .article-card-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
        .article-card { background:var(--card); border:1px solid var(--line); border-radius:var(--radius-card); overflow:hidden; display:flex; flex-direction:column; transition:box-shadow .2s, transform .15s; }
        .article-card:hover { box-shadow:var(--shadow-md); transform:translateY(-2px); }
        .article-card .article-thumb { aspect-ratio:16/9; background-size:cover; background-position:center; overflow:hidden; }
        .article-card .article-thumb img { width:100%; height:100%; object-fit:cover; }
        .article-card .article-body { padding:18px 20px 20px; display:flex; flex-direction:column; flex:1; }
        .article-card .article-meta { font-size:12px; color:var(--muted); display:flex; gap:10px; margin-bottom:8px; flex-wrap:wrap; }
        .article-card .article-meta .tag { color:var(--accent-dark); }
        .article-card h3 { font-size:16px; font-weight:600; margin-bottom:8px; line-height:1.5; }
        .article-card h3 a { color:var(--text); }
        .article-card h3 a:hover { color:var(--brand); }
        .article-card p { font-size:14px; color:var(--muted); margin-bottom:12px; flex:1; }
        .article-card .read-more { font-size:14px; font-weight:600; }

        /* ========== CTA Banner ========== */
        .cta-banner { background:var(--footer-bg); border-radius:var(--radius-card); padding:40px 32px; text-align:center; color:#fff; }
        .cta-banner h2 { font-size:28px; font-weight:700; margin-bottom:12px; }
        .cta-banner p { color:#B8BCC4; font-size:16px; margin-bottom:24px; }
        .cta-actions { display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }

        /* ========== Footer ========== */
        .site-footer { background:var(--footer-bg); color:#B8BCC4; padding:48px 0 24px; }
        .footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:32px; margin-bottom:32px; }
        .site-footer h4 { color:#fff; font-size:16px; font-weight:600; margin-bottom:14px; }
        .site-footer p { font-size:14px; line-height:1.6; margin:0; }
        .site-footer ul { list-style:none; padding:0; margin:0; }
        .site-footer ul li { margin-bottom:8px; }
        .site-footer ul li a { color:#B8BCC4; font-size:14px; transition:color .2s; }
        .site-footer ul li a:hover { color:var(--accent); }
        .footer-bottom { border-top:1px solid rgba(255,255,255,.1); padding-top:16px; text-align:center; font-size:13px; color:#7A7F88; }

        /* ========== Responsive ========== */
        @media (max-width:1024px) {
            .container { padding:0 20px; }
            section { padding:48px 0; }
            .extension-grid { grid-template-columns:repeat(2,1fr); }
            .article-card-grid { grid-template-columns:repeat(2,1fr); }
            .steps-grid { grid-template-columns:repeat(3,1fr); }
        }
        @media (max-width:768px) {
            .nav-wrap { height:60px; }
            .main-nav { position:fixed; top:60px; left:0; right:0; bottom:0; background:#fff; flex-direction:column; padding:24px 20px; gap:8px; transform:translateX(100%); transition:transform .25s ease; z-index:99; overflow-y:auto; }
            .main-nav.open { transform:translateX(0); }
            .main-nav .nav-link { font-size:18px; padding:12px 0; border-bottom:1px solid var(--line); width:100%; }
            .main-nav .nav-link.active { border-bottom-color:var(--brand); }
            .nav-cta .btn { display:none; }
            .menu-toggle { display:block; }
            .category-band h1 { font-size:26px; }
            .extension-grid { grid-template-columns:1fr; }
            .article-card-grid { grid-template-columns:1fr; }
            .steps-grid { grid-template-columns:1fr; }
            .dev-entry { flex-direction:column; text-align:center; }
            .footer-grid { grid-template-columns:1fr 1fr; gap:24px; }
            .cta-banner { padding:32px 20px; }
        }
        @media (max-width:520px) {
            .container { padding:0 16px; }
            section { padding:36px 0; }
            .logo { font-size:20px; }
            .logo span { font-size:18px; }
            .category-band { padding:28px 0 24px; }
            .category-band h1 { font-size:22px; }
            .band-actions .btn { width:100%; }
            .footer-grid { grid-template-columns:1fr; gap:20px; }
            .cta-banner h2 { font-size:22px; }
            .filter-tags { gap:6px; }
            .filter-tag { padding:6px 14px; font-size:13px; }
            .extension-card { padding:18px; }
        }