/* roulang page: index */
:root {
  --primary: #1a56db;
  --primary-dark: #1341a8;
  --primary-light: #3b82f6;
  --secondary: #7c3aed;
  --secondary-light: #a78bfa;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --bg: #f8fafc;
  --bg-dark: #0f172a;
  --bg-card: #ffffff;
  --text: #1e293b;
  --text-light: #64748b;
  --text-white: #f1f5f9;
  --border: #e2e8f0;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.10);
  --transition: 0.25s ease;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --container: 1200px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.6; font-size: 16px; -webkit-font-smoothing: antialiased; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover, a:focus { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
input, button, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
button { cursor: pointer; background: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-title { font-size: 32px; font-weight: 700; text-align: center; margin-bottom: 16px; color: var(--text); }
.section-sub { font-size: 18px; color: var(--text-light); text-align: center; max-width: 700px; margin: 0 auto 48px; line-height: 1.7; }
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 12px 28px; border-radius: var(--radius-sm); font-weight: 600; font-size: 16px; transition: all var(--transition); border: 2px solid transparent; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover, .btn-primary:focus { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(26,86,219,0.30); }
.btn-secondary { background: var(--secondary); color: #fff; }
.btn-secondary:hover, .btn-secondary:focus { background: #6d28d9; color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(124,58,237,0.30); }
.btn-outline { border-color: var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover, .btn-outline:focus { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-accent { background: var(--accent); color: #1e293b; }
.btn-accent:hover, .btn-accent:focus { background: #d97706; color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,158,11,0.30); }
.badge { display: inline-block; padding: 4px 14px; border-radius: 50px; font-size: 13px; font-weight: 600; background: var(--primary-light); color: #fff; }
.badge-secondary { background: var(--secondary-light); color: #fff; }
.badge-accent { background: var(--accent-light); color: #1e293b; }
.card { background: var(--bg-card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 32px; transition: all var(--transition); border: 1px solid var(--border); }
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.card-img { border-radius: var(--radius-sm); overflow: hidden; margin-bottom: 20px; }
.card-img img { width: 100%; height: 200px; object-fit: cover; }
.card-title { font-size: 20px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.card-text { color: var(--text-light); line-height: 1.7; }
.text-center { text-align: center; }
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 32px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
@media (max-width: 1024px) { .grid-4 { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 768px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } .section { padding: 56px 0; } .section-title { font-size: 26px; } .section-sub { font-size: 16px; margin-bottom: 32px; } }

/* ===== HEADER / NAV ===== */
.site-header { background: rgba(255,255,255,0.95); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon { font-size: 28px; color: var(--primary); }
.logo-text { font-size: 20px; font-weight: 800; color: var(--text); letter-spacing: -0.3px; white-space: nowrap; }
.logo-text span { color: var(--primary); }
.main-nav { display: flex; align-items: center; }
.main-nav ul { display: flex; gap: 8px; }
.main-nav a { display: block; padding: 8px 18px; border-radius: var(--radius-sm); font-weight: 500; font-size: 15px; color: var(--text-light); transition: all var(--transition); position: relative; }
.main-nav a:hover, .main-nav a:focus { color: var(--primary); background: rgba(26,86,219,0.06); }
.main-nav .active a, .main-nav a.active { color: var(--primary); background: rgba(26,86,219,0.10); font-weight: 600; }
.header-actions { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
.search-box { display: flex; align-items: center; background: var(--bg); border-radius: 50px; border: 1px solid var(--border); overflow: hidden; transition: all var(--transition); }
.search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,86,219,0.12); }
.search-box input { padding: 8px 16px; background: transparent; width: 180px; color: var(--text); }
.search-box input::placeholder { color: var(--text-light); }
.search-box button { padding: 8px 16px; color: var(--text-light); transition: color var(--transition); }
.search-box button:hover { color: var(--primary); }
.mobile-toggle { display: none; font-size: 24px; color: var(--text); padding: 8px; }
@media (max-width: 900px) {
  .main-nav { position: fixed; top: 72px; left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); padding: 16px 24px; transform: translateY(-120%); opacity: 0; visibility: hidden; transition: all 0.3s ease; }
  .main-nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .main-nav ul { flex-direction: column; gap: 4px; }
  .main-nav a { padding: 12px 16px; font-size: 16px; }
  .header-actions .search-box input { width: 120px; }
  .mobile-toggle { display: block; }
  .header-actions .btn { display: none; }
}
@media (max-width: 520px) {
  .logo-text { font-size: 16px; }
  .header-inner { gap: 12px; }
  .search-box input { width: 80px; }
  .search-box button { padding: 8px 10px; }
}

/* ===== HERO ===== */
.hero { position: relative; min-height: 85vh; display: flex; align-items: center; overflow: hidden; background: var(--bg-dark); }
.hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat; opacity: 0.40; z-index: 0; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,23,42,0.88) 0%, rgba(15,23,42,0.60) 60%, rgba(26,86,219,0.30) 100%); z-index: 1; }
.hero .container { position: relative; z-index: 2; padding-top: 40px; padding-bottom: 40px; }
.hero-content { max-width: 700px; }
.hero-badge { display: inline-block; padding: 6px 20px; border-radius: 50px; font-size: 14px; font-weight: 600; background: rgba(59,130,246,0.20); color: var(--primary-light); border: 1px solid rgba(59,130,246,0.30); margin-bottom: 20px; backdrop-filter: blur(4px); }
.hero-title { font-size: 48px; font-weight: 800; color: #fff; line-height: 1.2; margin-bottom: 20px; letter-spacing: -0.5px; }
.hero-title span { color: var(--primary-light); }
.hero-text { font-size: 20px; color: var(--text-white); line-height: 1.7; margin-bottom: 36px; opacity: 0.90; max-width: 600px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.hero-actions .btn { font-size: 17px; padding: 14px 34px; }
.hero-stats { display: flex; gap: 40px; margin-top: 48px; padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.12); }
.hero-stat h3 { font-size: 28px; font-weight: 700; color: #fff; }
.hero-stat p { font-size: 14px; color: var(--text-white); opacity: 0.70; }
@media (max-width: 768px) {
  .hero { min-height: 60vh; }
  .hero-title { font-size: 32px; }
  .hero-text { font-size: 17px; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stat h3 { font-size: 22px; }
}
@media (max-width: 520px) {
  .hero-title { font-size: 26px; }
  .hero-text { font-size: 15px; }
  .hero-actions .btn { width: 100%; justify-content: center; }
}

/* ===== FEATURES ===== */
.features { background: var(--bg); }
.feature-card { text-align: center; padding: 40px 28px; }
.feature-icon { width: 64px; height: 64px; border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 28px; color: #fff; }
.feature-icon.blue { background: linear-gradient(135deg, var(--primary), var(--primary-light)); }
.feature-icon.purple { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); }
.feature-icon.gold { background: linear-gradient(135deg, var(--accent), #d97706); }
.feature-card .card-title { margin-bottom: 12px; }
.feature-card .card-text { font-size: 15px; }

/* ===== HOW IT WORKS ===== */
.how-it-works { background: var(--bg-card); }
.steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; position: relative; }
.step { text-align: center; position: relative; }
.step-num { width: 56px; height: 56px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 22px; font-weight: 700; margin: 0 auto 16px; position: relative; z-index: 2; box-shadow: 0 4px 16px rgba(26,86,219,0.25); }
.step h4 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--text-light); line-height: 1.6; }
.step-line { display: none; }
@media (min-width: 769px) {
  .steps { position: relative; }
  .steps::before { content: ''; position: absolute; top: 28px; left: 12%; right: 12%; height: 2px; background: var(--border); z-index: 1; }
}
@media (max-width: 768px) {
  .steps { grid-template-columns: repeat(2,1fr); }
  .steps::before { display: none; }
}
@media (max-width: 480px) {
  .steps { grid-template-columns: 1fr; }
}

/* ===== CMS NEWS ===== */
.news { background: var(--bg); }
.news-card { display: flex; flex-direction: column; }
.news-card .card-img { margin-bottom: 16px; }
.news-card .card-img img { height: 180px; }
.news-meta { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--text-light); margin-bottom: 8px; }
.news-meta .badge { font-size: 11px; padding: 2px 10px; }
.news-card .card-title { font-size: 18px; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card .card-text { font-size: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-empty { text-align: center; padding: 48px 24px; color: var(--text-light); font-size: 16px; background: var(--bg-card); border-radius: var(--radius); border: 1px dashed var(--border); }

/* ===== STATS ===== */
.stats-section { background: var(--bg-dark); color: #fff; position: relative; overflow: hidden; }
.stats-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; opacity: 0.10; z-index: 0; }
.stats-section .container { position: relative; z-index: 1; }
.stats-section .section-title { color: #fff; }
.stats-section .section-sub { color: var(--text-white); opacity: 0.75; }
.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 32px; text-align: center; }
.stat-item h3 { font-size: 40px; font-weight: 800; color: var(--primary-light); margin-bottom: 8px; }
.stat-item p { font-size: 16px; color: var(--text-white); opacity: 0.75; }
.stat-item .stat-icon { font-size: 32px; margin-bottom: 12px; color: var(--accent); }
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2,1fr); gap: 24px; }
  .stat-item h3 { font-size: 30px; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
}

/* ===== FAQ ===== */
.faq { background: var(--bg-card); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); padding: 20px 0; }
.faq-question { display: flex; justify-content: space-between; align-items: center; font-size: 17px; font-weight: 600; cursor: pointer; padding: 4px 0; color: var(--text); transition: color var(--transition); }
.faq-question:hover { color: var(--primary); }
.faq-question i { font-size: 14px; color: var(--text-light); transition: transform var(--transition); }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.35s ease; padding-top: 0; color: var(--text-light); line-height: 1.7; }
.faq-item.active .faq-answer { max-height: 300px; padding-top: 12px; }

/* ===== CTA ===== */
.cta { background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%); position: relative; overflow: hidden; }
.cta::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat; opacity: 0.08; z-index: 0; }
.cta .container { position: relative; z-index: 1; text-align: center; }
.cta h2 { font-size: 36px; font-weight: 800; color: #fff; margin-bottom: 16px; }
.cta p { font-size: 18px; color: var(--text-white); opacity: 0.85; max-width: 600px; margin: 0 auto 32px; line-height: 1.7; }
.cta .btn { font-size: 18px; padding: 16px 40px; }
.cta .btn-outline { border-color: #fff; color: #fff; }
.cta .btn-outline:hover { background: #fff; color: var(--primary); }
@media (max-width: 768px) {
  .cta h2 { font-size: 28px; }
  .cta p { font-size: 16px; }
  .cta .btn { width: 100%; justify-content: center; }
}

/* ===== FOOTER ===== */
.site-footer { background: var(--bg-dark); color: var(--text-white); padding: 48px 0 32px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-brand .logo-text { color: #fff; }
.footer-brand p { font-size: 14px; color: var(--text-white); opacity: 0.60; margin-top: 12px; line-height: 1.7; max-width: 300px; }
.footer-col h4 { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { font-size: 14px; color: var(--text-white); opacity: 0.60; transition: all var(--transition); }
.footer-col a:hover { opacity: 1; color: var(--primary-light); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 24px; font-size: 13px; color: var(--text-white); opacity: 0.50; flex-wrap: wrap; gap: 12px; }
.footer-bottom a { color: var(--text-white); opacity: 0.50; }
.footer-bottom a:hover { opacity: 1; color: var(--primary-light); }
@media (max-width: 768px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ===== MISC ===== */
.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-accent { color: var(--accent); }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #60a5fa;
            --primary-bg: #eff6ff;
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --accent: #8b5cf6;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-card: #ffffff;
            --text: #0f172a;
            --text-weak: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 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);
            --transition: 0.25s ease;
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 68px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.02);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo i {
            color: var(--primary);
            font-size: 26px;
        }
        .logo .logo-highlight {
            color: var(--primary-light);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }
        .main-nav ul {
            display: flex;
            gap: 4px;
            align-items: center;
        }
        .main-nav ul li a {
            display: block;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-weak);
            transition: all var(--transition);
            position: relative;
        }
        .main-nav ul li a:hover {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .main-nav ul li.active a {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: 40px;
            padding: 0 16px;
            height: 40px;
            gap: 8px;
            transition: all var(--transition);
            min-width: 180px;
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
        }
        .nav-search i {
            color: var(--text-light);
            font-size: 14px;
        }
        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            width: 100%;
            font-size: 14px;
            color: var(--text);
        }
        .nav-search input::placeholder {
            color: var(--text-light);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 14px;
            line-height: 1.2;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 1px 4px rgba(37, 99, 235, 0.2);
        }
        .btn-outline {
            background: transparent;
            color: var(--text);
            border: 1.5px solid var(--border);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-bg);
        }
        .btn-ghost {
            background: transparent;
            color: var(--text-weak);
            padding: 8px 16px;
        }
        .btn-ghost:hover {
            background: var(--bg-alt);
            color: var(--text);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
        }
        .nav-toggle:hover {
            background: var(--bg-alt);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-area {
            padding: 20px 0 0;
            background: var(--bg-alt);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-weak);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-weak);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--text-light);
            font-size: 12px;
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 500;
        }

        /* ===== Article Header ===== */
        .article-header {
            padding: 40px 0 32px;
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border-light);
        }
        .article-header h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            max-width: 860px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            align-items: center;
            font-size: 14px;
            color: var(--text-weak);
        }
        .article-meta i {
            margin-right: 6px;
            color: var(--primary-light);
            font-size: 13px;
        }
        .article-meta .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: 40px;
            background: var(--primary-bg);
            color: var(--primary);
            font-weight: 500;
            font-size: 13px;
        }
        .article-meta .date {
            display: inline-flex;
            align-items: center;
        }

        /* ===== Article Main ===== */
        .article-main {
            padding: 48px 0 64px;
            background: var(--bg);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body {
            font-size: 17px;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body p {
            margin-bottom: 20px;
        }
        .article-body h2 {
            font-size: 26px;
            margin: 40px 0 16px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--primary-bg);
        }
        .article-body h3 {
            font-size: 20px;
            margin: 32px 0 12px;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 20px 24px;
        }
        .article-body li {
            margin-bottom: 8px;
            list-style: disc;
        }
        .article-body ol li {
            list-style: decimal;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-bg);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-weak);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius);
            margin: 24px 0;
            box-shadow: var(--shadow-md);
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body a:hover {
            color: var(--primary-dark);
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 15px;
        }
        .article-body th,
        .article-body td {
            padding: 12px 16px;
            border: 1px solid var(--border);
            text-align: left;
        }
        .article-body th {
            background: var(--bg-alt);
            font-weight: 600;
        }
        .article-body .cms-content img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
            position: sticky;
            top: calc(var(--nav-height) + 24px);
        }
        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
        }
        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-bg);
        }
        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-list li:last-child {
            border-bottom: none;
        }
        .sidebar-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
        }
        .sidebar-list a:hover {
            color: var(--primary);
        }
        .sidebar-list a i {
            color: var(--primary-light);
            font-size: 12px;
        }
        .sidebar-cta {
            text-align: center;
        }
        .sidebar-cta p {
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 16px;
        }
        .sidebar-cta .btn {
            width: 100%;
        }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tags a {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 500;
            background: var(--bg-alt);
            color: var(--text-weak);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .sidebar-tags a:hover {
            background: var(--primary-bg);
            border-color: var(--primary-light);
            color: var(--primary);
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
            max-width: 600px;
            margin: 0 auto;
        }
        .not-found-box i {
            font-size: 56px;
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .not-found-box h2 {
            font-size: 28px;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-weak);
            font-size: 16px;
            margin-bottom: 24px;
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: 48px 0;
            background: var(--bg-alt);
            border-top: 1px solid var(--border-light);
        }
        .related-section h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 28px;
            text-align: center;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 20px;
        }
        .related-card .card-body h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .related-card .card-body h3 a {
            color: var(--text);
        }
        .related-card .card-body h3 a:hover {
            color: var(--primary);
        }
        .related-card .card-body p {
            font-size: 14px;
            color: var(--text-weak);
            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;
            margin-top: 12px;
            font-size: 13px;
            color: var(--text-light);
        }
        .related-card .card-meta .tag {
            background: var(--primary-bg);
            color: var(--primary);
            padding: 2px 10px;
            border-radius: 40px;
            font-size: 12px;
            font-weight: 500;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 0;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo-text {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
        }
        .footer-brand p {
            margin-top: 16px;
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            transition: all var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                border-bottom: 1px solid var(--border);
                padding: 16px 24px;
                box-shadow: var(--shadow-lg);
                flex-direction: column;
                align-items: stretch;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 2px;
            }
            .main-nav ul li a {
                padding: 12px 16px;
                font-size: 16px;
            }
            .nav-actions {
                margin-top: 12px;
                flex-direction: column;
                width: 100%;
            }
            .nav-search {
                width: 100%;
                min-width: unset;
            }
            .nav-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .nav-toggle {
                display: block;
            }
            .article-header h1 {
                font-size: 26px;
            }
            .article-body {
                font-size: 16px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                gap: 8px;
            }
            .logo {
                font-size: 18px;
            }
            .logo i {
                font-size: 20px;
            }
            .article-header {
                padding: 24px 0 20px;
            }
            .article-header h1 {
                font-size: 22px;
            }
            .article-main {
                padding: 32px 0 48px;
            }
            .article-body h2 {
                font-size: 20px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .sidebar-card {
                padding: 18px;
            }
            .related-card .card-body {
                padding: 16px;
            }
            .related-card img {
                height: 140px;
            }
            .site-footer {
                padding: 36px 0 0;
            }
        }

        /* ===== Utility ===== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mb-8 {
            margin-bottom: 8px;
        }

/* roulang page: category1 */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #60a5fa;
            --primary-bg: #eff6ff;
            --secondary: #0f172a;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-light: #64748b;
            --text-white: #f1f5f9;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 20px 60px rgba(37, 99, 235, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
            --spacing-section: 100px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

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

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--secondary);
            white-space: nowrap;
        }
        .logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
        }
        .logo .logo-highlight {
            color: var(--primary);
        }

        .main-nav {
            display: flex;
            align-items: center;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 4px;
        }
        .main-nav ul li a {
            display: block;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .main-nav ul li a:hover {
            color: var(--primary);
            background: var(--primary-bg);
        }
        .main-nav ul li.active a {
            color: var(--primary);
            background: var(--primary-bg);
            font-weight: 600;
        }
        .main-nav ul li.active a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-actions .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-alt);
            border-radius: 40px;
            padding: 0 16px;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .nav-actions .search-box:focus-within {
            border-color: var(--primary-light);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08);
        }
        .nav-actions .search-box input {
            border: none;
            background: transparent;
            padding: 8px 8px 8px 0;
            font-size: 14px;
            width: 140px;
            outline: none;
            color: var(--text);
        }
        .nav-actions .search-box input::placeholder {
            color: var(--text-light);
        }
        .nav-actions .search-box i {
            color: var(--text-light);
            font-size: 14px;
        }
        .nav-actions .btn-login {
            padding: 8px 20px;
            border-radius: 40px;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-actions .btn-login:hover {
            background: var(--border);
            border-color: var(--text-light);
        }
        .nav-actions .btn-primary {
            padding: 8px 24px;
            border-radius: 40px;
            background: var(--primary);
            border: none;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
        }
        .nav-actions .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(37, 99, 235, 0.35);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 4px;
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--secondary);
            border-radius: 4px;
            transition: var(--transition);
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            padding: 80px 0 100px;
            background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 50%, #ede9fe 100%);
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(37, 99, 235, 0.10);
            border: 1px solid rgba(37, 99, 235, 0.18);
            border-radius: 40px;
            padding: 6px 18px 6px 10px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            margin-bottom: 24px;
        }
        .hero-badge .badge-dot {
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(0.8);
            }
        }
        .hero-section h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--secondary);
            max-width: 780px;
            letter-spacing: -0.8px;
            margin-bottom: 20px;
        }
        .hero-section h1 .highlight {
            background: linear-gradient(135deg, var(--primary), #7c3aed);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: 18px;
            color: var(--text-light);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 36px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-actions .btn-hero-primary {
            padding: 14px 36px;
            border-radius: 40px;
            background: var(--primary);
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.30);
        }
        .hero-actions .btn-hero-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(37, 99, 235, 0.40);
        }
        .hero-actions .btn-hero-secondary {
            padding: 14px 36px;
            border-radius: 40px;
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid var(--border);
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            cursor: pointer;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }
        .hero-actions .btn-hero-secondary:hover {
            background: #fff;
            border-color: var(--primary-light);
            color: var(--primary);
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(226, 232, 240, 0.6);
        }
        .hero-stats .stat-item {
            display: flex;
            flex-direction: column;
        }
        .hero-stats .stat-number {
            font-size: 28px;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.5px;
        }
        .hero-stats .stat-label {
            font-size: 14px;
            color: var(--text-light);
            margin-top: 2px;
        }

        /* ===== 通用板块 ===== */
        .section-block {
            padding: var(--spacing-section) 0;
        }
        .section-block.alt-bg {
            background: var(--bg-alt);
        }
        .section-block.dark-bg {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-title {
            font-size: 36px;
            font-weight: 800;
            color: var(--secondary);
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-title.light {
            color: #fff;
        }
        .section-subtitle {
            font-size: 17px;
            color: var(--text-light);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.8;
        }
        .section-subtitle.light {
            color: rgba(241, 245, 249, 0.8);
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card-grid.two-col {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid.four-col {
            grid-template-columns: repeat(4, 1fr);
        }

        .feature-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 32px 28px;
            border: 1px solid var(--border);
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .feature-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 18px;
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
        }
        .feature-card .card-tag {
            display: inline-block;
            margin-top: 16px;
            padding: 4px 14px;
            border-radius: 40px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .step-item {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 28px 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            text-align: center;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-item .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
        }
        .step-item h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== 图文区块 ===== */
        .media-block {
            display: flex;
            align-items: center;
            gap: 60px;
        }
        .media-block.reverse {
            flex-direction: row-reverse;
        }
        .media-block .media-image {
            flex: 1;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .media-block .media-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        .media-block .media-content {
            flex: 1;
        }
        .media-block .media-content h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 16px;
            letter-spacing: -0.4px;
        }
        .media-block .media-content p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.9;
            margin-bottom: 20px;
        }
        .media-block .media-content .media-list {
            list-style: none;
            padding: 0;
        }
        .media-block .media-content .media-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            margin-bottom: 12px;
            font-size: 15px;
            color: var(--text);
        }
        .media-block .media-content .media-list li i {
            color: var(--primary);
            font-size: 16px;
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 20px 28px;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
        }
        .faq-item .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 17px;
            font-weight: 600;
            color: var(--secondary);
        }
        .faq-item .faq-question i {
            color: var(--text-light);
            transition: var(--transition);
            font-size: 14px;
        }
        .faq-item .faq-answer {
            display: none;
            margin-top: 14px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #1e40af, #3730a3, #1e3a5f);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.06;
            pointer-events: none;
        }
        .cta-inner {
            text-align: center;
            position: relative;
            z-index: 1;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: 38px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .cta-inner p {
            font-size: 17px;
            color: rgba(241, 245, 249, 0.85);
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .cta-inner .btn-cta {
            padding: 16px 48px;
            border-radius: 40px;
            background: var(--accent);
            border: none;
            font-size: 17px;
            font-weight: 600;
            color: var(--secondary);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.35);
        }
        .cta-inner .btn-cta:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(245, 158, 11, 0.45);
        }
        .cta-inner .cta-meta {
            margin-top: 20px;
            font-size: 13px;
            color: rgba(241, 245, 249, 0.6);
        }

        /* ===== 场景卡片 ===== */
        .scene-card {
            background: var(--bg);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .scene-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .scene-card .scene-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .scene-card .scene-body {
            padding: 24px 22px 28px;
        }
        .scene-card .scene-body h4 {
            font-size: 19px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 8px;
        }
        .scene-card .scene-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }
        .scene-card .scene-body .scene-tag {
            display: inline-block;
            margin-top: 14px;
            padding: 4px 14px;
            border-radius: 40px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-white);
            padding: 60px 0 0;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(241, 245, 249, 0.08);
        }
        .footer-brand .logo-text {
            font-size: 22px;
            font-weight: 700;
            letter-spacing: -0.3px;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(241, 245, 249, 0.6);
            line-height: 1.8;
            margin-top: 14px;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(241, 245, 249, 0.6);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 13px;
            color: rgba(241, 245, 249, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(241, 245, 249, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid.four-col {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
            .media-block {
                flex-direction: column;
                gap: 32px;
            }
            .media-block.reverse {
                flex-direction: column;
            }
            .hero-section h1 {
                font-size: 38px;
            }
            .section-title {
                font-size: 30px;
            }
            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 60px;
            }
            .main-nav ul {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
            }
            .main-nav ul.open {
                display: flex;
            }
            .main-nav ul li a {
                padding: 12px 16px;
                font-size: 16px;
            }
            .main-nav ul li.active a::after {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .nav-actions .search-box {
                display: none;
            }
            .nav-actions .btn-login {
                display: none;
            }
            .nav-actions .btn-primary {
                padding: 8px 18px;
                font-size: 13px;
            }
            .hero-section {
                padding: 60px 0 70px;
            }
            .hero-section h1 {
                font-size: 30px;
            }
            .hero-sub {
                font-size: 16px;
            }
            .hero-stats .stat-number {
                font-size: 22px;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .card-grid.two-col {
                grid-template-columns: 1fr;
            }
            .card-grid.four-col {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 26px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-inner h2 {
                font-size: 28px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn-hero-primary,
            .hero-actions .btn-hero-secondary {
                text-align: center;
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .hero-section h1 {
                font-size: 26px;
            }
            .section-title {
                font-size: 22px;
            }
            .container {
                padding: 0 16px;
            }
            .feature-card {
                padding: 24px 20px;
            }
            .step-item {
                padding: 20px 16px;
            }
            .scene-card .scene-body {
                padding: 18px 16px 22px;
            }
            .faq-item {
                padding: 16px 18px;
            }
        }