/* roulang page: index */
:root {
            --nav-bg: #0f0f1a;
            --nav-hover: #1a1a30;
            --nav-active: #2a2a50;
            --brand: #f5a623;
            --brand-hover: #e8960a;
            --brand-light: #fef3c7;
            --accent: #7c3aed;
            --accent-light: #ede9fe;
            --bg-main: #f8fafc;
            --bg-card: #ffffff;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --border-light: #e2e8f0;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 240px;
        }

        * { margin:0; padding:0; box-sizing:border-box; }
        html { scroll-behavior: smooth; }
        body { font-family: 'Inter','Segoe UI',system-ui,-apple-system,sans-serif; background:var(--bg-main); color:var(--text-primary); line-height:1.6; -webkit-font-smoothing:antialiased; }
        a { text-decoration:none; color:inherit; transition:var(--transition); }
        img { max-width:100%; display:block; }
        button, input, textarea { font-family:inherit; outline:none; border:none; }
        button { cursor:pointer; }

        .container { max-width:1280px; margin:0 auto; padding:0 24px; }
        .container-narrow { max-width:1024px; margin:0 auto; padding:0 24px; }

        /* Sidebar Layout */
        .app-shell { display:flex; min-height:100vh; }
        .sidebar { position:fixed; top:0; left:0; bottom:0; width:var(--sidebar-width); background:var(--nav-bg); z-index:1000; display:flex; flex-direction:column; overflow-y:auto; transition:var(--transition); }
        .sidebar-logo { padding:28px 24px 20px; border-bottom:1px solid rgba(255,255,255,0.06); }
        .sidebar-logo a { display:flex; align-items:center; gap:12px; }
        .sidebar-logo .logo-icon { width:40px; height:40px; background:var(--brand); border-radius:var(--radius-sm); display:flex; align-items:center; justify-content:center; font-size:22px; font-weight:800; color:#0f0f1a; }
        .sidebar-logo .logo-text { font-size:18px; font-weight:700; color:#fff; letter-spacing:0.5px; }
        .sidebar-logo .logo-text span { color:var(--brand); }
        .sidebar-nav { flex:1; padding:20px 16px; }
        .sidebar-nav .nav-label { font-size:11px; text-transform:uppercase; letter-spacing:1.2px; color:rgba(255,255,255,0.3); padding:0 12px; margin-bottom:12px; font-weight:600; }
        .sidebar-nav a { display:flex; align-items:center; gap:14px; padding:12px 16px; border-radius:var(--radius-sm); color:rgba(255,255,255,0.6); font-size:15px; font-weight:500; margin-bottom:4px; transition:var(--transition); }
        .sidebar-nav a i { width:20px; text-align:center; font-size:16px; }
        .sidebar-nav a:hover { background:var(--nav-hover); color:#fff; }
        .sidebar-nav a.active { background:var(--nav-active); color:var(--brand); box-shadow:inset 3px 0 0 var(--brand); }
        .sidebar-nav a.active i { color:var(--brand); }
        .sidebar-footer { padding:20px 24px; border-top:1px solid rgba(255,255,255,0.06); text-align:center; color:rgba(255,255,255,0.25); font-size:12px; }
        .sidebar-footer .brand-tag { color:var(--brand); font-weight:600; }

        .main-content { flex:1; margin-left:var(--sidebar-width); min-height:100vh; }

        /* Top Bar (mobile) */
        .topbar { display:none; position:fixed; top:0; left:0; right:0; height:64px; background:var(--nav-bg); z-index:999; padding:0 20px; align-items:center; justify-content:space-between; border-bottom:1px solid rgba(255,255,255,0.06); }
        .topbar .logo-text { font-size:17px; font-weight:700; color:#fff; }
        .topbar .logo-text span { color:var(--brand); }
        .topbar .hamburger { width:42px; height:42px; display:flex; align-items:center; justify-content:center; color:#fff; font-size:22px; border-radius:var(--radius-sm); background:rgba(255,255,255,0.06); cursor:pointer; transition:var(--transition); }
        .topbar .hamburger:hover { background:rgba(255,255,255,0.1); }

        /* Mobile Drawer */
        .drawer-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,0.6); z-index:1001; opacity:0; transition:opacity 0.3s; }
        .drawer-overlay.open { opacity:1; }
        .drawer { position:fixed; top:0; left:0; bottom:0; width:280px; background:var(--nav-bg); z-index:1002; transform:translateX(-100%); transition:transform 0.3s cubic-bezier(0.4,0,0.2,1); overflow-y:auto; }
        .drawer.open { transform:translateX(0); }
        .drawer-header { padding:24px 20px 16px; display:flex; align-items:center; justify-content:space-between; border-bottom:1px solid rgba(255,255,255,0.06); }
        .drawer-header .logo-text { font-size:17px; font-weight:700; color:#fff; }
        .drawer-header .logo-text span { color:var(--brand); }
        .drawer-header .close-btn { width:36px; height:36px; display:flex; align-items:center; justify-content:center; color:rgba(255,255,255,0.5); font-size:20px; background:rgba(255,255,255,0.06); border-radius:50%; cursor:pointer; transition:var(--transition); }
        .drawer-header .close-btn:hover { color:#fff; background:rgba(255,255,255,0.12); }
        .drawer-nav { padding:20px 16px; }
        .drawer-nav .nav-label { font-size:11px; text-transform:uppercase; letter-spacing:1.2px; color:rgba(255,255,255,0.3); padding:0 12px; margin-bottom:12px; font-weight:600; }
        .drawer-nav a { display:flex; align-items:center; gap:14px; padding:14px 16px; border-radius:var(--radius-sm); color:rgba(255,255,255,0.6); font-size:16px; font-weight:500; margin-bottom:4px; transition:var(--transition); }
        .drawer-nav a i { width:20px; text-align:center; font-size:17px; }
        .drawer-nav a:hover { background:var(--nav-hover); color:#fff; }
        .drawer-nav a.active { background:var(--nav-active); color:var(--brand); }

        /* Hero */
        .hero { background:linear-gradient(135deg, #0f0f1a 0%, #1a1a35 50%, #0f0f1a 100%); padding:80px 0 100px; position:relative; overflow:hidden; }
        .hero::before { content:''; position:absolute; top:-50%; left:-50%; width:200%; height:200%; background:radial-gradient(ellipse at 30% 50%, rgba(245,166,35,0.08) 0%, transparent 60%), radial-gradient(ellipse at 70% 50%, rgba(124,58,237,0.06) 0%, transparent 60%); pointer-events:none; }
        .hero-grid { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; position:relative; z-index:1; }
        .hero-badge { display:inline-flex; align-items:center; gap:8px; padding:6px 16px; background:rgba(245,166,35,0.12); border:1px solid rgba(245,166,35,0.2); border-radius:50px; font-size:13px; font-weight:600; color:var(--brand); margin-bottom:24px; }
        .hero-badge i { font-size:14px; }
        .hero h1 { font-size:52px; font-weight:800; line-height:1.15; color:#fff; margin-bottom:20px; letter-spacing:-1px; }
        .hero h1 span { color:var(--brand); }
        .hero p { font-size:18px; color:rgba(255,255,255,0.6); line-height:1.7; max-width:520px; margin-bottom:36px; }
        .hero-actions { display:flex; gap:16px; flex-wrap:wrap; }
        .btn-primary { display:inline-flex; align-items:center; gap:10px; padding:16px 36px; background:var(--brand); color:#0f0f1a; font-size:16px; font-weight:700; border-radius:50px; transition:var(--transition); box-shadow:0 4px 20px rgba(245,166,35,0.35); }
        .btn-primary:hover { background:var(--brand-hover); transform:translateY(-2px); box-shadow:0 8px 30px rgba(245,166,35,0.45); }
        .btn-secondary { display:inline-flex; align-items:center; gap:10px; padding:16px 36px; background:rgba(255,255,255,0.06); color:#fff; font-size:16px; font-weight:600; border-radius:50px; border:1px solid rgba(255,255,255,0.12); transition:var(--transition); }
        .btn-secondary:hover { background:rgba(255,255,255,0.12); transform:translateY(-2px); }
        .hero-stats { display:flex; gap:40px; margin-top:48px; padding-top:36px; border-top:1px solid rgba(255,255,255,0.06); }
        .hero-stat .stat-num { font-size:28px; font-weight:800; color:#fff; line-height:1.2; }
        .hero-stat .stat-num span { color:var(--brand); }
        .hero-stat .stat-label { font-size:14px; color:rgba(255,255,255,0.4); margin-top:2px; }
        .hero-visual { display:flex; justify-content:center; align-items:center; position:relative; }
        .hero-card { background:rgba(255,255,255,0.04); border:1px solid rgba(255,255,255,0.06); border-radius:var(--radius-lg); padding:40px 36px; width:100%; max-width:440px; backdrop-filter:blur(20px); }
        .hero-card .card-label { font-size:12px; text-transform:uppercase; letter-spacing:1.5px; color:rgba(255,255,255,0.3); font-weight:600; margin-bottom:16px; }
        .hero-card .card-title { font-size:22px; font-weight:700; color:#fff; margin-bottom:12px; }
        .hero-card .card-desc { font-size:14px; color:rgba(255,255,255,0.5); line-height:1.7; margin-bottom:24px; }
        .hero-card .card-features { display:flex; flex-direction:column; gap:12px; }
        .hero-card .card-feat { display:flex; align-items:center; gap:12px; font-size:14px; color:rgba(255,255,255,0.7); }
        .hero-card .card-feat i { color:var(--brand); font-size:16px; width:20px; text-align:center; }

        /* Section Common */
        .section { padding:80px 0; }
        .section-label { display:inline-flex; align-items:center; gap:8px; padding:6px 16px; background:var(--accent-light); border-radius:50px; font-size:13px; font-weight:600; color:var(--accent); margin-bottom:16px; }
        .section-title { font-size:36px; font-weight:800; color:var(--text-primary); line-height:1.25; margin-bottom:12px; letter-spacing:-0.5px; }
        .section-desc { font-size:17px; color:var(--text-secondary); max-width:640px; line-height:1.7; }
        .section-header { text-align:center; margin-bottom:56px; }
        .section-header .section-desc { margin:0 auto; }

        /* Advantages */
        .advantages-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
        .advantage-card { background:var(--bg-card); border-radius:var(--radius-md); padding:32px 28px; box-shadow:var(--shadow-sm); border:1px solid var(--border-light); transition:var(--transition); }
        .advantage-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-md); border-color:rgba(245,166,35,0.15); }
        .advantage-card .adv-icon { width:52px; height:52px; background:var(--brand-light); border-radius:var(--radius-sm); display:flex; align-items:center; justify-content:center; font-size:24px; color:var(--brand); margin-bottom:20px; }
        .advantage-card h3 { font-size:18px; font-weight:700; color:var(--text-primary); margin-bottom:8px; }
        .advantage-card p { font-size:14px; color:var(--text-secondary); line-height:1.7; }

        /* Categories */
        .categories-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:32px; }
        .category-card { background:var(--bg-card); border-radius:var(--radius-md); padding:40px 36px; box-shadow:var(--shadow-sm); border:1px solid var(--border-light); transition:var(--transition); position:relative; overflow:hidden; }
        .category-card::before { content:''; position:absolute; top:0; left:0; right:0; height:4px; background:var(--brand); opacity:0; transition:var(--transition); }
        .category-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-md); }
        .category-card:hover::before { opacity:1; }
        .category-card .cat-icon { width:56px; height:56px; border-radius:var(--radius-sm); display:flex; align-items:center; justify-content:center; font-size:26px; margin-bottom:20px; }
        .category-card .cat-icon.guide { background:var(--brand-light); color:var(--brand); }
        .category-card .cat-icon.strategy { background:var(--accent-light); color:var(--accent); }
        .category-card h3 { font-size:20px; font-weight:700; color:var(--text-primary); margin-bottom:8px; }
        .category-card p { font-size:14px; color:var(--text-secondary); line-height:1.7; margin-bottom:20px; }
        .category-card .cat-link { display:inline-flex; align-items:center; gap:8px; font-size:14px; font-weight:600; color:var(--brand); transition:var(--transition); }
        .category-card .cat-link i { font-size:12px; transition:var(--transition); }
        .category-card .cat-link:hover { color:var(--brand-hover); gap:12px; }

        /* Data Stats */
        .data-section { background:linear-gradient(135deg, #0f0f1a 0%, #1a1a35 100%); }
        .data-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:32px; text-align:center; }
        .data-item .data-num { font-size:42px; font-weight:800; color:var(--brand); line-height:1.2; }
        .data-item .data-label { font-size:15px; color:rgba(255,255,255,0.5); margin-top:6px; }
        .data-item .data-sub { font-size:13px; color:rgba(255,255,255,0.25); margin-top:2px; }

        /* News / CMS List */
        .news-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
        .news-card { background:var(--bg-card); border-radius:var(--radius-md); overflow:hidden; box-shadow:var(--shadow-sm); border:1px solid var(--border-light); transition:var(--transition); display:flex; flex-direction:column; }
        .news-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-md); }
        .news-card .news-img { height:180px; background:linear-gradient(135deg, #1a1a35 0%, #0f0f1a 100%); display:flex; align-items:center; justify-content:center; font-size:40px; color:rgba(245,166,35,0.2); position:relative; overflow:hidden; }
        .news-card .news-img .placeholder-icon { opacity:0.3; }
        .news-card .news-body { padding:20px 24px 24px; flex:1; display:flex; flex-direction:column; }
        .news-card .news-meta { display:flex; align-items:center; gap:12px; font-size:12px; color:var(--text-muted); margin-bottom:10px; }
        .news-card .news-meta .cat-tag { display:inline-block; padding:2px 12px; background:var(--brand-light); color:var(--brand); border-radius:50px; font-weight:600; font-size:11px; }
        .news-card h3 { font-size:16px; font-weight:700; color:var(--text-primary); line-height:1.5; margin-bottom:8px; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
        .news-card p { font-size:13px; color:var(--text-secondary); line-height:1.7; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; flex:1; }
        .news-card .news-foot { margin-top:16px; padding-top:12px; border-top:1px solid var(--border-light); display:flex; align-items:center; justify-content:space-between; }
        .news-card .news-foot .read-more { font-size:13px; font-weight:600; color:var(--brand); display:flex; align-items:center; gap:6px; transition:var(--transition); }
        .news-card .news-foot .read-more i { font-size:11px; transition:var(--transition); }
        .news-card .news-foot .read-more:hover { gap:10px; color:var(--brand-hover); }
        .news-card .news-foot .date { font-size:12px; color:var(--text-muted); }

        .news-empty { grid-column:1/-1; text-align:center; padding:60px 20px; color:var(--text-muted); font-size:16px; background:var(--bg-card); border-radius:var(--radius-md); border:1px dashed var(--border-light); }
        .news-empty i { font-size:40px; display:block; margin-bottom:16px; color:var(--text-muted); opacity:0.4; }

        /* Featured / Hot */
        .featured-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
        .featured-card { background:var(--bg-card); border-radius:var(--radius-md); padding:28px 24px; box-shadow:var(--shadow-sm); border:1px solid var(--border-light); transition:var(--transition); display:flex; flex-direction:column; }
        .featured-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-md); }
        .featured-card .feat-icon { width:44px; height:44px; border-radius:var(--radius-sm); display:flex; align-items:center; justify-content:center; font-size:20px; margin-bottom:16px; }
        .featured-card .feat-icon.hot { background:#fef2f2; color:#ef4444; }
        .featured-card .feat-icon.new { background:#ecfdf5; color:#10b981; }
        .featured-card .feat-icon.top { background:var(--brand-light); color:var(--brand); }
        .featured-card h3 { font-size:16px; font-weight:700; color:var(--text-primary); margin-bottom:6px; }
        .featured-card p { font-size:13px; color:var(--text-secondary); line-height:1.7; flex:1; }
        .featured-card .feat-tag { display:inline-block; margin-top:14px; padding:4px 14px; font-size:11px; font-weight:600; border-radius:50px; align-self:flex-start; }
        .featured-card .feat-tag.hot { background:#fef2f2; color:#ef4444; }
        .featured-card .feat-tag.new { background:#ecfdf5; color:#10b981; }
        .featured-card .feat-tag.top { background:var(--brand-light); color:var(--brand); }

        /* Process / Steps */
        .process-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; position:relative; }
        .process-grid::before { content:''; position:absolute; top:44px; left:12%; right:12%; height:2px; background:linear-gradient(to right, var(--brand), var(--accent), var(--brand)); opacity:0.2; }
        .process-step { text-align:center; position:relative; }
        .process-step .step-num { width:48px; height:48px; background:var(--brand); color:#0f0f1a; border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:20px; font-weight:800; margin:0 auto 20px; position:relative; z-index:1; box-shadow:0 4px 16px rgba(245,166,35,0.3); }
        .process-step h4 { font-size:17px; font-weight:700; color:var(--text-primary); margin-bottom:6px; }
        .process-step p { font-size:13px; color:var(--text-secondary); line-height:1.7; max-width:200px; margin:0 auto; }

        /* FAQ */
        .faq-list { max-width:800px; margin:0 auto; display:flex; flex-direction:column; gap:12px; }
        .faq-item { background:var(--bg-card); border-radius:var(--radius-md); box-shadow:var(--shadow-sm); border:1px solid var(--border-light); overflow:hidden; transition:var(--transition); }
        .faq-item:hover { box-shadow:var(--shadow-md); }
        .faq-question { width:100%; padding:20px 24px; display:flex; align-items:center; justify-content:space-between; background:none; font-size:16px; font-weight:600; color:var(--text-primary); text-align:left; cursor:pointer; transition:var(--transition); }
        .faq-question i { font-size:14px; color:var(--text-muted); transition:var(--transition); }
        .faq-question.active i { transform:rotate(180deg); color:var(--brand); }
        .faq-question:hover { background:rgba(245,166,35,0.03); }
        .faq-answer { padding:0 24px; max-height:0; overflow:hidden; transition:max-height 0.35s ease, padding 0.3s ease; }
        .faq-answer.open { padding:0 24px 20px; max-height:300px; }
        .faq-answer p { font-size:14px; color:var(--text-secondary); line-height:1.8; }

        /* CTA */
        .cta-section { background:linear-gradient(135deg, #0f0f1a 0%, #1a1a35 100%); padding:80px 0; text-align:center; position:relative; overflow:hidden; }
        .cta-section::before { content:''; position:absolute; top:-60%; left:-30%; width:160%; height:200%; background:radial-gradient(ellipse at center, rgba(245,166,35,0.06) 0%, transparent 60%); pointer-events:none; }
        .cta-section h2 { font-size:38px; font-weight:800; color:#fff; margin-bottom:16px; }
        .cta-section p { font-size:18px; color:rgba(255,255,255,0.5); max-width:560px; margin:0 auto 32px; line-height:1.7; }
        .cta-section .btn-primary { font-size:18px; padding:18px 48px; }

        /* Footer */
        .footer { background:var(--nav-bg); padding:60px 0 32px; }
        .footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; margin-bottom:40px; }
        .footer-brand .logo-text { font-size:20px; font-weight:700; color:#fff; display:block; margin-bottom:12px; }
        .footer-brand .logo-text span { color:var(--brand); }
        .footer-brand p { font-size:14px; color:rgba(255,255,255,0.4); line-height:1.7; max-width:320px; }
        .footer-col h4 { font-size:14px; font-weight:700; color:#fff; margin-bottom:16px; text-transform:uppercase; letter-spacing:0.5px; }
        .footer-col a { display:block; padding:6px 0; font-size:14px; color:rgba(255,255,255,0.45); transition:var(--transition); }
        .footer-col a:hover { color:var(--brand); transform:translateX(4px); }
        .footer-bottom { border-top:1px solid rgba(255,255,255,0.06); padding-top:24px; display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:16px; }
        .footer-bottom p { font-size:13px; color:rgba(255,255,255,0.25); }
        .footer-bottom .footer-links { display:flex; gap:24px; }
        .footer-bottom .footer-links a { font-size:13px; color:rgba(255,255,255,0.25); transition:var(--transition); }
        .footer-bottom .footer-links a:hover { color:var(--brand); }

        /* Back to top */
        .back-top { position:fixed; bottom:32px; right:32px; width:48px; height:48px; background:var(--brand); color:#0f0f1a; border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:20px; box-shadow:0 4px 20px rgba(245,166,35,0.35); opacity:0; visibility:hidden; transition:var(--transition); z-index:500; cursor:pointer; }
        .back-top.visible { opacity:1; visibility:visible; }
        .back-top:hover { transform:translateY(-4px); box-shadow:0 8px 30px rgba(245,166,35,0.45); }

        /* Responsive */
        @media (max-width:1024px) {
            .advantages-grid { grid-template-columns:repeat(2,1fr); }
            .data-grid { grid-template-columns:repeat(2,1fr); gap:24px; }
            .process-grid { grid-template-columns:repeat(2,1fr); gap:32px; }
            .process-grid::before { display:none; }
            .footer-grid { grid-template-columns:1fr 1fr; gap:32px; }
            .hero h1 { font-size:40px; }
            .hero-grid { gap:40px; }
        }

        @media (max-width:768px) {
            .sidebar { display:none; }
            .topbar { display:flex; }
            .main-content { margin-left:0; padding-top:64px; }
            .hero { padding:60px 0 72px; }
            .hero-grid { grid-template-columns:1fr; gap:40px; }
            .hero h1 { font-size:34px; }
            .hero p { font-size:16px; }
            .hero-stats { gap:24px; flex-wrap:wrap; }
            .hero-stat .stat-num { font-size:22px; }
            .hero-visual { display:none; }
            .section { padding:56px 0; }
            .section-title { font-size:28px; }
            .categories-grid { grid-template-columns:1fr; gap:20px; }
            .news-grid { grid-template-columns:1fr; gap:20px; }
            .featured-grid { grid-template-columns:1fr; gap:20px; }
            .advantages-grid { grid-template-columns:1fr; }
            .data-grid { grid-template-columns:1fr 1fr; gap:20px; }
            .data-item .data-num { font-size:32px; }
            .process-grid { grid-template-columns:1fr 1fr; gap:24px; }
            .footer-grid { grid-template-columns:1fr; gap:24px; }
            .footer-bottom { flex-direction:column; text-align:center; }
            .back-top { bottom:20px; right:20px; width:42px; height:42px; font-size:17px; }
            .cta-section h2 { font-size:28px; }
            .cta-section p { font-size:16px; }
        }

        @media (max-width:480px) {
            .hero h1 { font-size:28px; }
            .hero-actions { flex-direction:column; }
            .btn-primary, .btn-secondary { justify-content:center; }
            .section-title { font-size:24px; }
            .data-grid { grid-template-columns:1fr 1fr; gap:16px; }
            .process-grid { grid-template-columns:1fr; gap:24px; }
            .container { padding:0 16px; }
        }

/* roulang page: article */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-dark: #0f172a;
            --bg-card: #1e293b;
            --bg-body: #0b1120;
            --text-main: #f1f5f9;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --border-color: #1e293b;
            --border-light: #334155;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow: 0 4px 24px rgba(0,0,0,0.3);
            --shadow-hover: 0 8px 40px rgba(37,99,235,0.15);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .app-layout {
            display: flex;
            min-height: 100vh;
        }
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 240px;
            height: 100vh;
            background: var(--bg-dark);
            border-right: 1px solid var(--border-light);
            z-index: 100;
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            transition: var(--transition);
            overflow-y: auto;
        }
        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0 8px 24px 8px;
            border-bottom: 1px solid var(--border-light);
            margin-bottom: 20px;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            background: linear-gradient(135deg, #f1f5f9, #94a3b8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: 0.5px;
        }
        .logo-text span {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-label {
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--text-dim);
            padding: 0 12px 12px 12px;
            font-weight: 600;
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }
        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 16px;
        }
        .sidebar-nav a:hover {
            background: rgba(37, 99, 235, 0.1);
            color: var(--text-main);
        }
        .sidebar-nav a.active {
            background: rgba(37, 99, 235, 0.15);
            color: var(--primary-light);
            font-weight: 600;
        }
        .main-content {
            margin-left: 240px;
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        .article-header {
            background: linear-gradient(135deg, rgba(37,99,235,0.08), rgba(245,158,11,0.05));
            border-bottom: 1px solid var(--border-light);
            padding: 40px 0 32px;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-dim);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a {
            color: var(--text-muted);
        }
        .article-breadcrumb a:hover {
            color: var(--primary-light);
        }
        .article-breadcrumb .sep {
            color: var(--text-dim);
        }
        .article-breadcrumb .current {
            color: var(--text-main);
        }
        .article-category-badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            background: rgba(37,99,235,0.15);
            color: var(--primary-light);
            border: 1px solid rgba(37,99,235,0.25);
            margin-bottom: 16px;
        }
        .article-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
            color: var(--text-dim);
        }
        .article-meta i {
            margin-right: 6px;
            color: var(--text-dim);
        }
        .article-body {
            padding: 40px 0 60px;
        }
        .article-content {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow);
        }
        .article-content p {
            margin-bottom: 20px;
            font-size: 16px;
            color: var(--text-main);
            line-height: 1.8;
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            margin: 36px 0 16px;
            color: var(--text-main);
            border-bottom: 1px solid var(--border-light);
            padding-bottom: 10px;
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 28px 0 12px;
            color: var(--text-main);
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 20px;
            padding-left: 24px;
            color: var(--text-main);
        }
        .article-content li {
            margin-bottom: 8px;
            line-height: 1.7;
        }
        .article-content a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-content a:hover {
            color: var(--accent);
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(37,99,235,0.06);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
        }
        .article-content img {
            border-radius: var(--radius);
            margin: 24px 0;
            box-shadow: var(--shadow);
        }
        .article-footer-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            flex-wrap: wrap;
            gap: 12px;
        }
        .article-footer-nav a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            background: rgba(37,99,235,0.08);
            color: var(--text-muted);
            font-size: 14px;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .article-footer-nav a:hover {
            background: rgba(37,99,235,0.15);
            color: var(--primary-light);
            border-color: rgba(37,99,235,0.2);
        }
        .article-footer-nav .back-home {
            background: rgba(245,158,11,0.1);
            color: var(--accent);
        }
        .article-footer-nav .back-home:hover {
            background: rgba(245,158,11,0.2);
            color: var(--accent-dark);
        }
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
        }
        .not-found-box .icon {
            font-size: 64px;
            color: var(--text-dim);
            margin-bottom: 24px;
        }
        .not-found-box h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 24px;
            font-size: 16px;
        }
        .not-found-box .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box .btn-home:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(37,99,235,0.3);
        }
        .footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border-light);
            padding: 48px 0 32px;
            margin-top: auto;
        }
        .footer .container {
            padding: 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo-text {
            font-size: 22px;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: var(--text-dim);
            font-size: 14px;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: var(--text-dim);
            font-size: 14px;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--text-dim);
        }
        .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .footer-links a {
            color: var(--text-dim);
        }
        .footer-links a:hover {
            color: var(--primary-light);
        }
        .mobile-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 200;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            color: var(--text-main);
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .mobile-toggle:hover {
            background: var(--border-light);
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.6);
            z-index: 99;
            backdrop-filter: blur(4px);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: flex;
            }
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay.active {
                display: block;
            }
            .main-content {
                margin-left: 0;
            }
            .article-title {
                font-size: 24px;
            }
            .article-content {
                padding: 24px 20px;
            }
            .article-breadcrumb {
                font-size: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .container {
                padding: 0 16px;
            }
            .footer .container {
                padding: 0 16px;
            }
            .article-body {
                padding: 24px 0 40px;
            }
            .article-header {
                padding: 28px 0 24px;
            }
            .not-found-box {
                padding: 48px 16px;
            }
            .not-found-box .icon {
                font-size: 48px;
            }
            .not-found-box h2 {
                font-size: 22px;
            }
        }
        @media (max-width: 520px) {
            .article-title {
                font-size: 20px;
            }
            .article-meta {
                gap: 12px;
                font-size: 12px;
                flex-direction: column;
            }
            .article-content p {
                font-size: 15px;
            }
            .article-content h2 {
                font-size: 20px;
            }
            .article-content h3 {
                font-size: 18px;
            }
            .article-footer-nav {
                flex-direction: column;
                align-items: stretch;
            }
            .article-footer-nav a {
                justify-content: center;
            }
            .footer-grid {
                gap: 20px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #6366F1;
            --primary-light: #818CF8;
            --accent: #06B6D4;
            --bg-dark: #0F172A;
            --bg-card: #FFFFFF;
            --text-body: #1E293B;
            --text-muted: #94A3B8;
            --radius: 0.75rem;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.06);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            background: var(--bg-dark);
            color: var(--text-body);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        ::selection {
            background: var(--primary);
            color: #fff;
        }

        /* Layout */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }
        .sidebar {
            width: 240px;
            flex-shrink: 0;
            background: #1E293B;
            border-right: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            flex-direction: column;
            position: fixed;
            top: 0;
            left: 0;
            height: 100vh;
            z-index: 100;
            transition: var(--transition);
            overflow-y: auto;
        }
        .main-area {
            flex: 1;
            margin-left: 240px;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        /* Sidebar */
        .sidebar-brand {
            padding: 1.5rem 1.25rem 1rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .logo-text {
            font-size: 1.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, #A5B4FC, #6366F1, #06B6D4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }
        .logo-text span {
            color: #06B6D4;
            -webkit-text-fill-color: #06B6D4;
        }
        .sidebar-nav {
            padding: 1.25rem 0.75rem;
            flex: 1;
        }
        .nav-label {
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: #64748B;
            padding: 0 0.75rem 0.75rem;
            font-weight: 600;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.7rem 0.9rem;
            border-radius: 0.65rem;
            color: #CBD5E1;
            font-size: 0.9rem;
            font-weight: 500;
            text-decoration: none;
            transition: var(--transition);
            margin-bottom: 2px;
        }
        .sidebar-nav a i {
            width: 1.25rem;
            text-align: center;
            font-size: 1rem;
            color: #64748B;
            transition: var(--transition);
        }
        .sidebar-nav a:hover {
            background: rgba(99, 102, 241, 0.12);
            color: #E2E8F0;
        }
        .sidebar-nav a:hover i {
            color: var(--primary-light);
        }
        .sidebar-nav a.active {
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.18), rgba(6, 182, 212, 0.08));
            color: #E0E7FF;
            box-shadow: inset 2px 0 0 var(--primary);
        }
        .sidebar-nav a.active i {
            color: var(--primary-light);
        }

        /* Mobile toggle */
        .mobile-toggle {
            display: none;
            position: fixed;
            top: 1rem;
            left: 1rem;
            z-index: 200;
            background: #1E293B;
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: #E2E8F0;
            width: 44px;
            height: 44px;
            border-radius: 0.65rem;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            transition: var(--transition);
            backdrop-filter: blur(12px);
        }
        .mobile-toggle:hover {
            background: #334155;
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 99;
            backdrop-filter: blur(4px);
        }

        /* Hero */
        .category-hero {
            background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding: 3rem 2rem 3rem;
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(99, 102, 241, 0.08), transparent 70%);
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.06), transparent 70%);
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
            max-width: 1200px;
            margin: 0 auto;
        }
        .category-hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            color: #F1F5F9;
            line-height: 1.2;
            margin-bottom: 0.75rem;
            letter-spacing: -0.5px;
        }
        .category-hero h1 span {
            background: linear-gradient(135deg, #A5B4FC, #06B6D4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero p {
            color: #94A3B8;
            font-size: 1.1rem;
            max-width: 680px;
            line-height: 1.7;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(99, 102, 241, 0.15);
            border: 1px solid rgba(99, 102, 241, 0.2);
            color: #A5B4FC;
            padding: 0.35rem 1rem;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 1.25rem;
            letter-spacing: 0.3px;
        }
        .hero-badge i {
            font-size: 0.7rem;
        }

        /* Container */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* Section */
        .section-block {
            padding: 4rem 0;
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: #F1F5F9;
            margin-bottom: 0.5rem;
            letter-spacing: -0.3px;
        }
        .section-sub {
            color: #94A3B8;
            font-size: 1rem;
            margin-bottom: 2.5rem;
            max-width: 600px;
        }
        .section-divider {
            height: 1px;
            background: linear-gradient(90deg, rgba(99, 102, 241, 0.3), transparent);
            margin: 0 auto;
            max-width: 1200px;
        }

        /* Cards */
        .card {
            background: #1E293B;
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 1rem;
            padding: 1.5rem;
            transition: var(--transition);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
        }
        .card:hover {
            border-color: rgba(99, 102, 241, 0.25);
            box-shadow: 0 12px 40px rgba(99, 102, 241, 0.1);
            transform: translateY(-3px);
        }
        .card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 0.75rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 1rem;
            background: rgba(99, 102, 241, 0.12);
            color: var(--primary-light);
        }
        .card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #F1F5F9;
            margin-bottom: 0.5rem;
        }
        .card p {
            color: #94A3B8;
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .card .card-tag {
            display: inline-block;
            padding: 0.2rem 0.7rem;
            border-radius: 100px;
            font-size: 0.7rem;
            font-weight: 600;
            background: rgba(6, 182, 212, 0.12);
            color: #67E8F9;
            margin-top: 0.75rem;
        }

        /* Grid */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        /* List items */
        .guide-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .guide-list-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1rem 1.25rem;
            background: #1E293B;
            border: 1px solid rgba(255, 255, 255, 0.04);
            border-radius: 0.85rem;
            transition: var(--transition);
            cursor: default;
        }
        .guide-list-item:hover {
            border-color: rgba(99, 102, 241, 0.2);
            background: rgba(30, 41, 59, 0.8);
        }
        .guide-list-item .num {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(99, 102, 241, 0.15);
            color: #A5B4FC;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
        }
        .guide-list-item .content h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #F1F5F9;
            margin-bottom: 0.2rem;
        }
        .guide-list-item .content p {
            color: #94A3B8;
            font-size: 0.85rem;
            line-height: 1.5;
        }

        /* Tags */
        .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.65rem;
        }
        .tag {
            display: inline-block;
            padding: 0.4rem 1rem;
            border-radius: 100px;
            font-size: 0.8rem;
            font-weight: 500;
            background: rgba(99, 102, 241, 0.08);
            color: #A5B4FC;
            border: 1px solid rgba(99, 102, 241, 0.12);
            transition: var(--transition);
            text-decoration: none;
            cursor: default;
        }
        .tag:hover {
            background: rgba(99, 102, 241, 0.18);
            border-color: rgba(99, 102, 241, 0.3);
        }

        /* FAQ */
        .faq-item {
            background: #1E293B;
            border: 1px solid rgba(255, 255, 255, 0.04);
            border-radius: 0.85rem;
            padding: 1.25rem 1.5rem;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(99, 102, 241, 0.15);
        }
        .faq-item h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #F1F5F9;
            margin-bottom: 0.4rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .faq-item h4 i {
            color: var(--primary-light);
            font-size: 0.85rem;
        }
        .faq-item p {
            color: #94A3B8;
            font-size: 0.9rem;
            line-height: 1.6;
            padding-left: 1.65rem;
        }

        /* CTA */
        .cta-block {
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(6, 182, 212, 0.05));
            border: 1px solid rgba(99, 102, 241, 0.12);
            border-radius: 1.5rem;
            padding: 3rem 2.5rem;
            text-align: center;
        }
        .cta-block h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: #F1F5F9;
            margin-bottom: 0.75rem;
        }
        .cta-block p {
            color: #94A3B8;
            font-size: 1rem;
            max-width: 520px;
            margin: 0 auto 1.75rem;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.95rem;
            background: linear-gradient(135deg, #6366F1, #4F46E5);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(99, 102, 241, 0.4);
            background: linear-gradient(135deg, #4F46E5, #4338CA);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            border-radius: 100px;
            font-weight: 600;
            font-size: 0.95rem;
            background: transparent;
            color: #A5B4FC;
            border: 1px solid rgba(99, 102, 241, 0.3);
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-secondary:hover {
            background: rgba(99, 102, 241, 0.1);
            border-color: rgba(99, 102, 241, 0.5);
        }

        /* Footer */
        .footer {
            background: #0F172A;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 3.5rem 1.5rem 2rem;
            margin-top: auto;
        }
        .footer .container {
            max-width: 1200px;
            margin: 0 auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand .logo-text {
            font-size: 1.35rem;
            display: inline-block;
            margin-bottom: 0.75rem;
        }
        .footer-brand p {
            color: #94A3B8;
            font-size: 0.85rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: #F1F5F9;
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            color: #94A3B8;
            font-size: 0.85rem;
            text-decoration: none;
            padding: 0.3rem 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: #A5B4FC;
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 1.75rem;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            flex-wrap: wrap;
            gap: 1rem;
        }
        .footer-bottom p {
            color: #64748B;
            font-size: 0.8rem;
        }
        .footer-links {
            display: flex;
            gap: 1.25rem;
        }
        .footer-links a {
            color: #64748B;
            font-size: 0.8rem;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: #A5B4FC;
        }

        /* Stats / Data blocks */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }
        .stat-card {
            background: #1E293B;
            border: 1px solid rgba(255, 255, 255, 0.04);
            border-radius: 1rem;
            padding: 1.5rem 1rem;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover {
            border-color: rgba(99, 102, 241, 0.2);
            transform: translateY(-2px);
        }
        .stat-card .stat-num {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(135deg, #A5B4FC, #06B6D4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-card .stat-label {
            color: #94A3B8;
            font-size: 0.85rem;
            font-weight: 500;
            margin-top: 0.25rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay.open {
                display: block;
            }
            .main-area {
                margin-left: 0;
            }
            .mobile-toggle {
                display: flex;
            }
            .category-hero {
                padding: 2.5rem 1.25rem 2rem;
            }
            .category-hero h1 {
                font-size: 1.7rem;
            }
            .category-hero p {
                font-size: 0.95rem;
            }
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .section-block {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.75rem;
            }
            .stat-card .stat-num {
                font-size: 1.5rem;
            }
            .cta-block {
                padding: 2rem 1.25rem;
            }
            .cta-block h2 {
                font-size: 1.4rem;
            }
            .guide-list-item {
                padding: 0.85rem 1rem;
            }
            .faq-item {
                padding: 1rem 1.15rem;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.4rem;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-card {
                padding: 1rem 0.75rem;
            }
            .stat-card .stat-num {
                font-size: 1.3rem;
            }
            .container {
                padding: 0 1rem;
            }
            .tag-group {
                gap: 0.4rem;
            }
            .tag {
                font-size: 0.7rem;
                padding: 0.3rem 0.7rem;
            }
            .btn-primary,
            .btn-secondary {
                padding: 0.6rem 1.25rem;
                font-size: 0.85rem;
            }
            .footer {
                padding: 2rem 1rem 1.5rem;
            }
        }

        /* Scrollbar */
        .sidebar::-webkit-scrollbar {
            width: 4px;
        }
        .sidebar::-webkit-scrollbar-track {
            background: transparent;
        }
        .sidebar::-webkit-scrollbar-thumb {
            background: #334155;
            border-radius: 10px;
        }

        /* Focus visible */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: category2 */
:root {
            --primary: #6366f1;
            --primary-dark: #4f46e5;
            --primary-light: #a5b4fc;
            --secondary: #f59e0b;
            --accent: #10b981;
            --bg-dark: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-surface: #222240;
            --text-main: #f1f5f9;
            --text-muted: #94a3b8;
            --text-light: #cbd5e1;
            --border-color: #2d2d4a;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 8px 32px rgba(99, 102, 241, 0.08);
            --shadow-hover: 0 16px 48px rgba(99, 102, 241, 0.18);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 240px;
        }

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

        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            transition: var(--transition);
        }

        /* ===== App Shell Sidebar ===== */
        .app-shell {
            display: flex;
            width: 100%;
            min-height: 100vh;
        }

        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-card);
            border-right: 1px solid var(--border-color);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            padding: 24px 16px;
            overflow-y: auto;
            backdrop-filter: blur(12px);
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            padding-bottom: 28px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 24px;
            letter-spacing: -0.3px;
        }

        .sidebar-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            flex-shrink: 0;
        }

        .sidebar-logo span {
            color: var(--secondary);
        }

        .sidebar .nav-label {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--text-muted);
            margin-bottom: 12px;
            padding-left: 12px;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .sidebar-nav a i {
            width: 22px;
            text-align: center;
            font-size: 18px;
        }

        .sidebar-nav a:hover {
            background: rgba(99, 102, 241, 0.12);
            color: var(--text-light);
        }

        .sidebar-nav a.active {
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(245, 158, 11, 0.1));
            color: #fff;
            font-weight: 600;
            border-left: 4px solid var(--secondary);
            box-shadow: 0 0 20px rgba(99, 102, 241, 0.06);
        }

        .sidebar-nav a.active i {
            color: var(--secondary);
        }

        /* ===== Main Content ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .page-header {
            padding: 32px 40px 0 40px;
            background: transparent;
        }

        .page-header h1 {
            font-size: 36px;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #fff 30%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-header .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .page-header .breadcrumb a {
            color: var(--primary-light);
        }

        .page-header .breadcrumb a:hover {
            color: #fff;
        }

        .page-header .breadcrumb span {
            color: var(--text-muted);
        }

        /* ===== Container ===== */
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 40px;
            width: 100%;
        }

        /* ===== Sections ===== */
        .section {
            padding: 60px 0;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 32px;
            max-width: 640px;
        }

        /* ===== Hero Minimal ===== */
        .hero-minimal {
            padding: 40px 0 20px 0;
        }

        .hero-minimal .hero-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            margin-top: 20px;
        }

        .hero-minimal .hero-stat {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--bg-card);
            padding: 16px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
        }

        .hero-minimal .hero-stat i {
            font-size: 28px;
            color: var(--secondary);
        }

        .hero-minimal .hero-stat .num {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-minimal .hero-stat .label {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== Cards Grid ===== */
        .grid-cards {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 24px;
        }

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

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(99, 102, 241, 0.3);
        }

        .card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
            color: #fff;
        }

        .card .card-icon.purple {
            background: linear-gradient(135deg, #6366f1, #8b5cf6);
        }
        .card .card-icon.amber {
            background: linear-gradient(135deg, #f59e0b, #f97316);
        }
        .card .card-icon.green {
            background: linear-gradient(135deg, #10b981, #059669);
        }
        .card .card-icon.blue {
            background: linear-gradient(135deg, #3b82f6, #1d4ed8);
        }
        .card .card-icon.rose {
            background: linear-gradient(135deg, #f43f5e, #e11d48);
        }
        .card .card-icon.cyan {
            background: linear-gradient(135deg, #06b6d4, #0891b2);
        }

        .card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .card .card-tags .tag {
            background: rgba(99, 102, 241, 0.12);
            color: var(--primary-light);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            border: 1px solid rgba(99, 102, 241, 0.15);
        }

        .card .card-tags .tag.amber-tag {
            background: rgba(245, 158, 11, 0.12);
            color: #fcd34d;
            border-color: rgba(245, 158, 11, 0.15);
        }

        /* ===== List Block ===== */
        .list-block {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .list-item {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            background: var(--bg-card);
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .list-item:hover {
            border-color: rgba(99, 102, 241, 0.25);
            box-shadow: var(--shadow-card);
        }

        .list-item .item-index {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: #fff;
            flex-shrink: 0;
        }

        .list-item .item-body h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
        }

        .list-item .item-body p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* ===== FAQ ===== */
        .faq-grid {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item summary {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            list-style: none;
        }

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

        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 18px;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--secondary);
        }

        .faq-item .faq-answer {
            padding: 0 24px 20px 24px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .faq-item:hover {
            border-color: rgba(99, 102, 241, 0.2);
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(245, 158, 11, 0.06));
            border: 1px solid rgba(99, 102, 241, 0.2);
            border-radius: var(--radius);
            padding: 48px 40px;
            text-align: center;
        }

        .cta-block h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-block p {
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 28px auto;
            font-size: 16px;
        }

        .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 24px rgba(99, 102, 241, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(99, 102, 241, 0.45);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-main);
            border: 1px solid var(--border-color);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: #fff;
            background: rgba(99, 102, 241, 0.08);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 24px 0;
            margin-top: auto;
        }

        .footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer .footer-brand .logo-text {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
        }

        .footer .footer-brand .logo-text span {
            color: var(--secondary);
        }

        .footer .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            margin-top: 12px;
            line-height: 1.8;
            max-width: 320px;
        }

        .footer .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 14px;
            padding: 6px 0;
            transition: var(--transition);
        }

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

        .footer .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer .footer-links {
            display: flex;
            gap: 20px;
        }

        .footer .footer-links a {
            color: var(--text-muted);
            font-size: 13px;
        }

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

        /* ===== Mobile Toggle ===== */
        .mobile-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1100;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: #fff;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            cursor: pointer;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            background: var(--bg-surface);
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            z-index: 999;
            backdrop-filter: blur(4px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .container {
                padding: 0 24px;
            }
            .page-header {
                padding: 24px 24px 0 24px;
            }
            .page-header h1 {
                font-size: 28px;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay.open {
                display: block;
            }
            .mobile-toggle {
                display: flex;
            }
            .main-content {
                margin-left: 0;
            }
            .container {
                padding: 0 16px;
            }
            .page-header {
                padding: 16px 16px 0 16px;
                padding-top: 72px;
            }
            .page-header h1 {
                font-size: 24px;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .grid-cards {
                grid-template-columns: 1fr;
            }
            .hero-minimal .hero-stats {
                flex-direction: column;
                gap: 12px;
            }
            .hero-minimal .hero-stat {
                padding: 12px 20px;
            }
            .cta-block {
                padding: 32px 20px;
            }
            .cta-block h2 {
                font-size: 22px;
            }
            .btn-group {
                flex-direction: column;
                align-items: stretch;
            }
            .btn {
                justify-content: center;
            }
            .footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .list-item {
                flex-direction: column;
                gap: 10px;
            }
            .faq-item summary {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 18px 16px 18px;
            }
        }

        @media (max-width: 520px) {
            .page-header h1 {
                font-size: 20px;
            }
            .section-title {
                font-size: 18px;
            }
            .card {
                padding: 18px;
            }
            .card .card-icon {
                width: 40px;
                height: 40px;
                font-size: 18px;
            }
            .card h3 {
                font-size: 16px;
            }
            .sidebar {
                width: 220px;
                padding: 16px 12px;
            }
            .hero-minimal .hero-stat .num {
                font-size: 22px;
            }
            .list-item {
                padding: 16px 18px;
            }
        }

        /* ===== Scrollbar ===== */
        .sidebar::-webkit-scrollbar {
            width: 4px;
        }
        .sidebar::-webkit-scrollbar-track {
            background: transparent;
        }
        .sidebar::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 4px;
        }

        /* ===== Focus ===== */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Tag cloud ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-cloud .tag {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 13px;
            color: var(--text-muted);
            transition: var(--transition);
            cursor: default;
        }

        .tag-cloud .tag:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            background: rgba(99, 102, 241, 0.06);
        }

        /* ===== Divider ===== */
        .divider {
            height: 1px;
            background: var(--border-color);
            margin: 8px 0 32px 0;
        }