/* roulang page: index */
:root {
  --primary: #1e3a5f;
  --primary-dark: #152c49;
  --accent: #d4a84b;
  --accent-light: #e8c47a;
  --ink: #1a2332;
  --muted: #6b7a8f;
  --mist: #f5f7fa;
  --radius: 16px;
  --shadow-soft: 0 4px 24px rgba(30, 58, 95, 0.08);
  --shadow-lift: 0 12px 32px rgba(30, 58, 95, 0.16);
  --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: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif; color: var(--ink); background: #fff; line-height: 1.6; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-pad { padding: 96px 0; }
.section-title { font-size: 2.5rem; font-weight: 800; line-height: 1.2; letter-spacing: -0.02em; }
.section-sub { font-size: 1.125rem; color: var(--muted); max-width: 640px; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 4px 14px; border-radius: 999px; font-size: 0.875rem; font-weight: 600; letter-spacing: 0.02em; }
.badge-accent { background: rgba(212, 168, 75, 0.12); color: #a07a2e; }
.badge-primary { background: rgba(30, 58, 95, 0.08); color: var(--primary); }
.card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-soft); transition: var(--transition); }
.card:hover { box-shadow: var(--shadow-lift); transform: translateY(-4px); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 32px; border-radius: 999px; font-weight: 700; font-size: 1rem; border: none; cursor: pointer; transition: var(--transition); }
.btn-accent { background: linear-gradient(135deg, #d4a84b, #e8c47a); color: #1a2332; box-shadow: 0 4px 16px rgba(212, 168, 75, 0.35); }
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(212, 168, 75, 0.45); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-outline { border: 2px solid rgba(255,255,255,0.8); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; }
.input { width: 100%; padding: 14px 20px; border: 1px solid #e2e8f0; border-radius: 12px; font-size: 1rem; transition: var(--transition); background: #fff; }
.input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px rgba(212, 168, 75, 0.15); }
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.92); backdrop-filter: blur(10px); border-bottom: 1px solid #eef2f7; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { font-size: 1.5rem; font-weight: 900; color: var(--primary); display: flex; align-items: center; gap: 10px; }
.logo-icon { width: 40px; height: 40px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 1.125rem; }
.main-nav { display: flex; align-items: center; gap: 8px; }
.nav-link { padding: 10px 18px; border-radius: 999px; font-weight: 600; font-size: 0.95rem; color: var(--muted); transition: var(--transition); }
.nav-link:hover { background: var(--mist); color: var(--primary); }
.nav-link.active { background: var(--primary); color: #fff; }
.header-cta { display: flex; align-items: center; gap: 12px; }
.hero { position: relative; padding: 140px 0 120px; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; overflow: hidden; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(20, 45, 70, 0.92), rgba(30, 58, 95, 0.78)); }
.hero-content { position: relative; z-index: 2; max-width: 700px; }
.hero-title { font-size: 3.5rem; font-weight: 900; line-height: 1.15; color: #fff; letter-spacing: -0.02em; }
.hero-sub { font-size: 1.25rem; color: rgba(255,255,255,0.85); margin-top: 20px; line-height: 1.7; }
.hero-badges { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.hero-card { position: relative; z-index: 2; background: rgba(255,255,255,0.12); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.2); border-radius: 20px; padding: 24px; max-width: 340px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card { text-align: center; padding: 40px 24px; }
.stat-num { font-size: 2.75rem; font-weight: 900; color: var(--primary); line-height: 1.1; }
.stat-label { color: var(--muted); margin-top: 8px; font-size: 0.95rem; }
.cat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.cat-card { position: relative; border-radius: 20px; overflow: hidden; text-align: center; padding: 48px 32px; background: linear-gradient(145deg, var(--primary), var(--primary-dark)); color: #fff; }
.cat-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.25; }
.cat-card .cat-body { position: relative; z-index: 2; }
.cat-icon { font-size: 2.5rem; color: var(--accent); margin-bottom: 12px; }
.cat-title { font-size: 1.5rem; font-weight: 800; }
.cat-desc { color: rgba(255,255,255,0.8); margin-top: 8px; line-height: 1.6; }
.latest-list { display: flex; flex-direction: column; gap: 16px; }
.latest-item { display: flex; align-items: center; gap: 20px; padding: 24px; background: #fff; border-radius: 16px; border: 1px solid #edf1f5; transition: var(--transition); }
.latest-item:hover { border-color: var(--accent); box-shadow: var(--shadow-soft); transform: translateX(4px); }
.latest-index { font-size: 1.25rem; font-weight: 900; color: var(--accent); width: 40px; text-align: center; flex-shrink: 0; }
.latest-tag { display: inline-block; padding: 3px 12px; background: rgba(30, 58, 95, 0.1); color: var(--primary); border-radius: 999px; font-size: 0.75rem; font-weight: 700; }
.latest-main { flex: 1; min-width: 0; }
.latest-main h3 { font-size: 1.125rem; font-weight: 700; margin: 4px 0; }
.latest-main p { color: var(--muted); font-size: 0.95rem; }
.latest-time { color: #94a3b8; font-size: 0.85rem; flex-shrink: 0; }
.security-section { background: url('/assets/images/backpic/back-2.png') center/cover fixed no-repeat; position: relative; }
.security-section::before { content: ''; position: absolute; inset: 0; background: rgba(15, 28, 45, 0.94); }
.security-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.security-item { border: 1px solid rgba(255,255,255,0.1); border-radius: 20px; padding: 40px 28px; background: rgba(255,255,255,0.05); backdrop-filter: blur(6px); }
.security-item .num { font-size: 2.25rem; font-weight: 900; color: var(--accent); }
.security-item h3 { color: #fff; font-size: 1.25rem; margin-top: 8px; }
.security-item p { color: rgba(255,255,255,0.7); margin-top: 8px; font-size: 0.95rem; }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.process-step { position: relative; padding: 36px 24px; text-align: center; }
.step-num { width: 56px; height: 56px; margin: 0 auto 16px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: var(--accent); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; font-weight: 800; }
.step-title { font-weight: 800; font-size: 1.125rem; }
.step-desc { color: var(--muted); font-size: 0.9rem; margin-top: 6px; }
.faq-item { background: #fff; border: 1px solid #eef2f7; border-radius: 16px; padding: 0; transition: var(--transition); overflow: hidden; }
.faq-item details { padding: 24px 28px; }
.faq-item summary { font-weight: 700; font-size: 1.05rem; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 1.5rem; color: var(--accent); font-weight: 400; transition: var(--transition); }
.faq-item details[open] summary::after { transform: rotate(45deg); }
.faq-item p { color: var(--muted); margin-top: 12px; font-size: 0.95rem; }
.cta-section { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); padding: 80px 0; border-radius: 32px; margin: 96px 24px; text-align: center; }
.site-footer { background: #0f1b2d; color: #94a3b8; padding: 64px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.footer-title { color: #fff; font-weight: 700; font-size: 1rem; margin-bottom: 16px; }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.mobile-bottom-nav { display: none; position: fixed; bottom: 0; left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(10px); border-top: 1px solid #eef2f7; z-index: 100; padding: 8px 0; }
.mobile-bottom-nav a { display: flex; flex-direction: column; align-items: center; justify-content: center; flex: 1; padding: 6px 0; color: var(--muted); font-size: 0.7rem; }
.mobile-bottom-nav a.active { color: var(--primary); }
.mobile-bottom-nav a i { font-size: 1.25rem; margin-bottom: 2px; }
.mobile-menu { display: none; background: #fff; border-top: 1px solid #eef2f7; padding: 16px 24px; }
.mobile-menu a { display: block; padding: 12px 16px; border-radius: 12px; font-weight: 600; color: var(--ink); }
.mobile-menu a:hover { background: var(--mist); }
@media (max-width: 1024px) {
  .hero { padding: 100px 0 80px; }
  .hero-title { font-size: 2.5rem; }
  .section-pad { padding: 72px 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .security-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .main-nav, .header-cta .btn { display: none; }
  .mobile-menu { display: block; }
  .hero { padding: 80px 0 160px; }
  .hero-card { margin-top: 32px; margin-left: 0; }
  .cat-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .mobile-bottom-nav { display: flex; }
  .section-title { font-size: 2rem; }
  .cta-section { margin: 64px 16px; padding: 48px 24px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 2rem; }
  .stats-grid { grid-template-columns: 1fr; }
  .security-grid { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr;  gap: 16px; }
  .footer-grid { grid-template-columns: 1fr; }
  .latest-item { flex-direction: column; align-items: flex-start; text-align: left; }
  .latest-time { align-self: flex-start; }
}

/* roulang page: category1 */
:root {
            --primary: #e6a817;
            --primary-dark: #c9930f;
            --secondary: #0f1e3d;
            --deep: #0a1428;
            --surface: #f8f7f4;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --border: #e5e7eb;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.10);
            --transition: all 0.3s ease;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            background: #fff;
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(229, 231, 235, 0.7);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--secondary);
            flex-shrink: 0;
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #f0c14b, #e6a817);
            border-radius: 12px;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(230, 168, 23, 0.35);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            color: #4b5563;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link i {
            font-size: 13px;
        }
        .nav-link:hover {
            color: var(--primary-dark);
            background: rgba(230, 168, 23, 0.08);
        }
        .nav-link.active {
            color: var(--secondary);
            background: linear-gradient(135deg, rgba(230, 168, 23, 0.18), rgba(230, 168, 23, 0.06));
            font-weight: 700;
            box-shadow: inset 0 0 0 1px rgba(230, 168, 23, 0.2);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #f0c14b, #e6a817);
            color: #0f1e3d;
            font-weight: 700;
            padding: 9px 22px;
            border-radius: 50px;
            font-size: 14px;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(230, 168, 23, 0.4);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 168, 23, 0.5);
            color: #0f1e3d;
        }
        .nav-cta i {
            font-size: 12px;
        }
        .mobile-tab-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(14px);
            border-top: 1px solid #e5e7eb;
            z-index: 100;
            padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
            justify-content: space-around;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
        }
        .mobile-tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            padding: 6px 14px;
            border-radius: 14px;
            font-size: 11px;
            color: #9ca3af;
            transition: var(--transition);
            font-weight: 600;
        }
        .mobile-tab-item i {
            font-size: 18px;
        }
        .mobile-tab-item.active,
        .mobile-tab-item:hover {
            color: var(--primary-dark);
            background: rgba(230, 168, 23, 0.08);
        }
        /* ===== Hero / Banner ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 64px;
            background: linear-gradient(135deg, rgba(15, 30, 61, 0.95), rgba(10, 20, 40, 0.88)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(230, 168, 23, 0.25), transparent 70%);
            pointer-events: none;
        }
        .banner-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
        }
        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(230, 168, 23, 0.2);
            border: 1px solid rgba(230, 168, 23, 0.4);
            color: #f0c14b;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 50px;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }
        .banner-title {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }
        .banner-title span {
            color: var(--primary);
        }
        .banner-desc {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.8);
            max-width: 640px;
            margin-bottom: 28px;
        }
        .banner-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            max-width: 500px;
            margin-top: 32px;
        }
        .banner-stat-item {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 14px;
            padding: 16px 18px;
            backdrop-filter: blur(6px);
        }
        .banner-stat-item .num {
            font-size: 26px;
            font-weight: 800;
            color: #f0c14b;
            line-height: 1.2;
        }
        .banner-stat-item .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 20px;
        }
        .breadcrumb a:hover {
            color: #f0c14b;
        }
        .breadcrumb i {
            font-size: 10px;
            opacity: 0.7;
        }
        /* ===== Sections ===== */
        .section {
            padding: 80px 0;
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }
        .section-eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary-dark);
            background: rgba(230, 168, 23, 0.12);
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--secondary);
            margin-bottom: 14px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.7;
        }
        /* 登录指南卡片 */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 20px;
        }
        .guide-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .guide-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(230, 168, 23, 0.4);
        }
        .guide-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #f0c14b, #e6a817);
            opacity: 0;
            transition: var(--transition);
        }
        .guide-item:hover::before {
            opacity: 1;
        }
        .guide-icon {
            width: 56px;
            height: 56px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(230, 168, 23, 0.15), rgba(230, 168, 23, 0.05));
            border-radius: 14px;
            color: var(--primary-dark);
            font-size: 22px;
            margin-bottom: 20px;
        }
        .guide-item h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 10px;
        }
        .guide-item p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }
        .guide-item .tag-list {
            margin-top: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .tag-list .tag {
            font-size: 12px;
            padding: 4px 12px;
            background: var(--surface);
            border-radius: 50px;
            color: #4b5563;
            border: 1px solid var(--border);
        }
        /* 登录步骤 */
        .steps-section {
            background: var(--surface);
        }
        .steps-wrapper {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
            margin-top: 20px;
        }
        .step-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px 20px;
            text-align: center;
            border: 1px solid var(--border);
            position: relative;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-number {
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #f0c14b, #e6a817);
            color: #fff;
            font-weight: 800;
            border-radius: 50%;
            font-size: 15px;
            margin-bottom: 16px;
            box-shadow: 0 4px 12px rgba(230, 168, 23, 0.3);
        }
        .step-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
        }
        .step-arrow {
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 18px;
            opacity: 0.5;
        }
        /* 常见问题 */
        .faq-section {
            background: var(--surface);
        }
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(230, 168, 23, 0.3);
        }
        .faq-item summary {
            padding: 20px 26px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-weight: 600;
            color: var(--secondary);
            font-size: 16px;
            list-style: none;
            background: linear-gradient(135deg, rgba(250, 250, 250, 0.6), #fff);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary i {
            color: var(--primary-dark);
            transition: transform 0.3s ease;
            font-size: 16px;
            flex-shrink: 0;
        }
        .faq-item[open] summary i {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 26px 22px;
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.8;
            border-top: 1px dashed var(--border);
            padding-top: 16px;
        }
        /* 推荐内容 */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .recommend-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .recommend-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        .recommend-card .cover {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .recommend-card .cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 20, 40, 0.4), transparent 60%);
        }
        .recommend-card .card-body {
            padding: 20px 20px 24px;
        }
        .recommend-card .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary-dark);
            background: rgba(230, 168, 23, 0.1);
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
        }
        .recommend-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .recommend-card .meta {
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .recommend-card .meta i {
            font-size: 12px;
        }
        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary), var(--deep)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            position: relative;
            background-blend-mode: overlay;
            color: #fff;
            text-align: center;
            padding: 80px 0;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at center, rgba(230, 168, 23, 0.1), transparent 70%);
        }
        .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-content h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-content p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, #f0c14b, #e6a817);
            color: var(--secondary);
            font-weight: 700;
            font-size: 16px;
            padding: 14px 36px;
            border-radius: 50px;
            box-shadow: 0 8px 24px rgba(230, 168, 23, 0.4);
            transition: var(--transition);
        }
        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(230, 168, 23, 0.5);
            color: var(--secondary);
        }
        .cta-btn i {
            font-size: 14px;
        }
        /* 安全提示条 */
        .security-tip {
            background: rgba(230, 168, 23, 0.1);
            border: 1px solid rgba(230, 168, 23, 0.2);
            border-radius: var(--radius);
            padding: 18px 24px;
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 14px;
            color: var(--secondary);
            margin-top: 24px;
        }
        .security-tip i {
            color: var(--primary-dark);
            font-size: 18px;
            flex-shrink: 0;
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--deep);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-top: 0;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a,
        .footer-links span {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: #f0c14b;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom span:last-child {
            color: rgba(230, 168, 23, 0.8);
        }
        /* 响应式 */
        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-wrapper {
                grid-template-columns: repeat(3, 1fr);
            }
            .step-arrow {
                display: none;
            }
            .recommend-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .site-header {
                display: none;
            }
            body {
                padding-bottom: 68px;
            }
            .mobile-tab-bar {
                display: flex;
            }
            .page-banner {
                padding: 56px 0 48px;
            }
            .banner-title {
                font-size: 30px;
            }
            .banner-stats {
                grid-template-columns: repeat(3, 1fr);
                gap: 12px;
            }
            .banner-stat-item {
                padding: 12px;
            }
            .banner-stat-item .num {
                font-size: 22px;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 26px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .steps-wrapper {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin-left: auto;
                margin-right: auto;
            }
            .recommend-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-content h2 {
                font-size: 24px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .banner-title {
                font-size: 24px;
            }
            .banner-desc {
                font-size: 14px;
            }
            .banner-stats {
                grid-template-columns: 1fr;
            }
            .section-head {
                margin-bottom: 36px;
            }
            .section-title {
                font-size: 22px;
            }
            .guide-grid {
                gap: 16px;
            }
            .guide-item {
                padding: 24px 20px;
            }
            .recommend-grid {
                gap: 16px;
            }
        }

/* roulang page: article */
:root {
            --primary: #1e56a0;
            --primary-dark: #143d73;
            --primary-light: #3b82f6;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg: #f0f4f8;
            --surface: #ffffff;
            --text: #1e293b;
            --text-light: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(30, 42, 80, 0.08);
            --shadow-lg: 0 12px 40px rgba(30, 42, 80, 0.12);
            --transition: all 0.3s ease;
        }

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

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

        body {
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font: inherit;
        }

        input,
        select,
        textarea {
            font: inherit;
            border: none;
            outline: none;
        }

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

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.5px;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 10px;
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 4px 14px rgba(30, 86, 160, 0.3);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-link {
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(30, 86, 160, 0.08);
        }

        .nav-link.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(30, 86, 160, 0.3);
        }

        .header-btn {
            padding: 9px 22px;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--accent), #fbbf24);
            color: #1e293b;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
            transition: var(--transition);
        }

        .header-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.45);
        }

        /* ===== Mobile Tab Bar ===== */
        .mobile-tab-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border);
            padding: 6px 0 env(safe-area-inset-bottom);
            box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.06);
        }

        .mobile-tab-bar .tab-item {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            padding: 8px 4px;
            color: var(--text-light);
            font-size: 0.7rem;
            font-weight: 500;
            transition: var(--transition);
            border-radius: 12px;
        }

        .mobile-tab-bar .tab-item i {
            font-size: 1.2rem;
        }

        .mobile-tab-bar .tab-item.active {
            color: var(--primary);
        }

        .mobile-tab-bar .tab-item.active i {
            transform: scale(1.1);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 64px 0 56px;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(30, 86, 160, 0.85)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            right: -40px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.15);
            filter: blur(60px);
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.9);
            transition: var(--transition);
        }

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

        .breadcrumb i {
            font-size: 0.65rem;
            color: rgba(255, 255, 255, 0.5);
        }

        .article-hero h1 {
            font-size: clamp(1.7rem, 3.5vw, 2.8rem);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            max-width: 800px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.8);
        }

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

        .article-meta i {
            color: var(--accent);
        }

        /* ===== Article Content ===== */
        .article-section {
            padding: 48px 0 0;
        }

        .article-layout {
            max-width: 860px;
            margin: 0 auto;
        }

        .article-card {
            background: var(--surface);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 44px;
            border: 1px solid rgba(255, 255, 255, 0.6);
        }

        .article-content {
            font-size: 1.02rem;
            line-height: 1.9;
            color: #334155;
        }

        .article-content h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--text);
            margin-top: 2rem;
            margin-bottom: 0.9rem;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text);
            margin-top: 1.5rem;
            margin-bottom: 0.7rem;
        }

        .article-content p {
            margin-bottom: 1.1rem;
        }

        .article-content ul,
        .article-content ol {
            margin-bottom: 1.1rem;
            padding-left: 1.4rem;
        }

        .article-content ul li,
        .article-content ol li {
            margin-bottom: 0.5rem;
        }

        .article-content img {
            border-radius: 12px;
            margin: 1.5rem 0;
            box-shadow: var(--shadow);
        }

        .article-content blockquote {
            background: #f8fafc;
            border-left: 4px solid var(--primary);
            padding: 14px 20px;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
            font-style: italic;
            color: var(--text-light);
        }

        .article-content a {
            color: var(--primary);
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content a:hover {
            color: var(--primary-dark);
        }

        /* ===== Not Found ===== */
        .not-found {
            text-align: center;
            padding: 80px 20px;
        }

        .not-found i {
            font-size: 3.5rem;
            color: var(--accent);
            margin-bottom: 20px;
        }

        .not-found h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .not-found p {
            color: var(--text-light);
            margin-bottom: 28px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 30px;
            border-radius: 999px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(30, 86, 160, 0.3);
            transition: var(--transition);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(30, 86, 160, 0.4);
        }

        /* ===== Info Callout ===== */
        .info-callout {
            background: linear-gradient(135deg, #fffbeb, #fef3c7);
            border: 1px solid #fcd34d;
            border-radius: var(--radius);
            padding: 24px 28px;
            margin-top: 32px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .info-callout i {
            font-size: 1.5rem;
            color: var(--accent-dark);
            margin-top: 2px;
        }

        .info-callout h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #92400e;
            margin-bottom: 6px;
        }

        .info-callout p {
            font-size: 0.92rem;
            color: #78350f;
            line-height: 1.7;
        }

        /* ===== Category Cards ===== */
        .category-section {
            padding: 56px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-header h2 {
            font-size: 1.9rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.5px;
            margin-bottom: 8px;
        }

        .section-header p {
            color: var(--text-light);
            font-size: 1.05rem;
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
            max-width: 900px;
            margin: 0 auto;
        }

        .category-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 36px 32px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

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

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

        .category-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(30, 86, 160, 0.1);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 18px;
            transition: var(--transition);
        }

        .category-card:hover .category-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        .category-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .category-card p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.92rem;
            transition: var(--transition);
        }

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

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--surface);
            padding: 60px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: grid;
            gap: 16px;
        }

        .faq-item {
            background: #f8fafc;
            border-radius: var(--radius-sm);
            padding: 22px 26px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: 0 4px 16px rgba(30, 86, 160, 0.06);
        }

        .faq-item h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 8px;
        }

        .faq-item h3 i {
            color: var(--primary);
            font-size: 1.1rem;
        }

        .faq-item p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.7;
            padding-left: 28px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 64px 0;
            background: linear-gradient(135deg, #0f172a, #1e3a5f), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            background-blend-mode: overlay;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: -60px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.2);
            filter: blur(50px);
        }

        .cta-content {
            text-align: center;
            color: #fff;
            position: relative;
            z-index: 2;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 1.9rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .cta-content p {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            font-size: 1.05rem;
        }

        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--accent), #fbbf24);
            color: #1e293b;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 6px 24px rgba(245, 158, 11, 0.4);
            transition: var(--transition);
        }

        .btn-cta:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 10px 32px rgba(245, 158, 11, 0.5);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 0.9rem;
        }

        .footer-links a,
        .footer-links span {
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Focus & Accessibility ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(245, 158, 11, 0.5);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }

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

        @media (max-width: 768px) {
            .header-inner {
                height: 60px;
            }

            .logo {
                font-size: 1.15rem;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
            }

            .main-nav {
                display: none;
            }

            .header-btn {
                padding: 7px 16px;
                font-size: 0.82rem;
            }

            .mobile-tab-bar {
                display: flex;
            }

            body {
                padding-bottom: 68px;
            }

            .article-hero {
                padding: 40px 0 36px;
            }

            .article-hero h1 {
                font-size: 1.5rem;
            }

            .article-card {
                padding: 32px 24px;
            }

            .category-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .info-callout {
                flex-direction: column;
                padding: 20px;
            }
        }

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

            .article-card {
                padding: 24px 18px;
                border-radius: 12px;
            }

            .article-content {
                font-size: 0.96rem;
            }

            .article-content h2 {
                font-size: 1.3rem;
            }

            .faq-item {
                padding: 18px;
            }

            .faq-item p {
                padding-left: 0;
                padding-top: 6px;
            }

            .category-card {
                padding: 28px 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .cta-content h2 {
                font-size: 1.5rem;
            }

            .cta-content p {
                font-size: 0.95rem;
            }

            .btn-cta {
                padding: 12px 28px;
                font-size: 0.92rem;
            }
        }

/* roulang page: category2 */
:root {
      --primary-900: #0b1220;
      --primary-800: #0f172a;
      --primary-700: #1e293b;
      --accent-500: #eab308;
      --accent-400: #fbbf24;
      --bg-light: #f8fafc;
      --text-dark: #1e293b;
      --text-body: #334155;
      --text-muted: #64748b;
      --border-light: #e2e8f0;
      --radius-md: 14px;
      --radius-lg: 24px;
      --shadow-sm: 0 2px 8px rgba(2, 6, 23, 0.06);
      --shadow-md: 0 10px 30px rgba(2, 6, 23, 0.08);
      --shadow-lg: 0 24px 50px rgba(2, 6, 23, 0.14);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
      background: var(--bg-light);
      color: var(--text-body);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      padding-bottom: 0;
    }

    .container.container {
      max-width: 1200px !important;
      width: 100% !important;
      margin-left: auto !important;
      margin-right: auto !important;
      padding-left: 24px !important;
      padding-right: 24px !important;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all .25s ease;
    }

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

    a:focus-visible,
    button:focus-visible,
    summary:focus-visible {
      outline: 3px solid rgba(234, 179, 8, 0.5);
      outline-offset: 2px;
      border-radius: 6px;
    }

    /* Header */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 100;
      background: rgba(11, 18, 32, 0.92);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      transition: all .3s ease;
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
      gap: 24px;
    }

    .logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: #fff;
      letter-spacing: 0.5px;
      white-space: nowrap;
    }

    .logo-icon {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: linear-gradient(135deg, #f59e0b, #eab308);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #0f172a;
      font-size: 1.25rem;
      box-shadow: 0 4px 12px rgba(234, 179, 8, 0.35);
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      padding: 8px 18px;
      border-radius: 100px;
      font-size: 0.95rem;
      font-weight: 600;
      color: rgba(255, 255, 255, 0.78);
      transition: all .25s ease;
    }

    .nav-link:hover {
      color: #fff;
      background: rgba(255, 255, 255, 0.1);
    }

    .nav-link.active {
      color: #0f172a;
      background: linear-gradient(135deg, #fbbf24, #f59e0b);
      box-shadow: 0 4px 14px rgba(234, 179, 8, 0.3);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 9px 20px;
      border-radius: 100px;
      background: linear-gradient(135deg, #fbbf24, #f59e0b);
      color: #0f172a;
      font-size: 0.92rem;
      font-weight: 700;
      box-shadow: 0 4px 14px rgba(234, 179, 8, 0.25);
      transition: all .3s ease;
    }

    .nav-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(234, 179, 8, 0.35);
    }

    /* Hero */
    .page-hero {
      position: relative;
      padding: 180px 0 100px;
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
    }

    .page-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
      background-size: 44px 44px;
      z-index: 1;
      pointer-events: none;
    }

    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(120deg, rgba(11, 18, 32, 0.95) 20%, rgba(15, 23, 42, 0.72) 60%, rgba(15, 23, 42, 0.4));
    }

    .hero-content {
      position: relative;
      z-index: 2;
      color: #fff;
      max-width: 860px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border-radius: 100px;
      font-size: 0.875rem;
      font-weight: 600;
    }

    .badge-accent {
      background: rgba(234, 179, 8, 0.15);
      border: 1px solid rgba(234, 179, 8, 0.4);
      color: #fbbf24;
      margin-bottom: 24px;
    }

    .hero-content h1 {
      font-size: clamp(2.4rem, 5vw, 3.8rem);
      font-weight: 800;
      line-height: 1.2;
      letter-spacing: -0.02em;
      margin-bottom: 20px;
      color: #fff;
    }

    .text-accent {
      color: #fbbf24;
    }

    .hero-content > p {
      font-size: 1.15rem;
      color: rgba(255, 255, 255, 0.75);
      max-width: 620px;
      margin-bottom: 32px;
      line-height: 1.8;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 56px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 32px;
      border-radius: 50px;
      font-size: 1rem;
      font-weight: 700;
      line-height: 1.2;
      border: none;
      cursor: pointer;
      transition: all .3s ease;
    }

    .btn-primary {
      background: linear-gradient(135deg, #fbbf24, #f59e0b);
      color: #0f172a;
      box-shadow: 0 6px 20px rgba(234, 179, 8, 0.3);
    }

    .btn-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 28px rgba(234, 179, 8, 0.4);
    }

    .btn-outline {
      background: transparent;
      border: 2px solid rgba(255, 255, 255, 0.4);
      color: #fff;
    }

    .btn-outline:hover {
      border-color: #fbbf24;
      color: #fbbf24;
      transform: translateY(-3px);
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
      gap: 20px;
      max-width: 680px;
    }

    .stat-item {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 16px;
      padding: 20px;
      text-align: center;
      backdrop-filter: blur(10px);
      transition: all .3s ease;
    }

    .stat-item:hover {
      background: rgba(255, 255, 255, 0.14);
      transform: translateY(-4px);
    }

    .stat-item strong {
      display: block;
      font-size: 1.8rem;
      font-weight: 800;
      color: #fbbf24;
      line-height: 1.3;
    }

    .stat-item span {
      font-size: 0.875rem;
      color: rgba(255, 255, 255, 0.65);
      margin-top: 4px;
    }

    /* Section */
    .section {
      padding: 96px 0;
    }

    .section-head {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 56px;
    }

    .section-tag {
      display: inline-block;
      padding: 6px 18px;
      border-radius: 100px;
      background: rgba(234, 179, 8, 0.1);
      border: 1px solid rgba(234, 179, 8, 0.25);
      color: #b45309;
      font-size: 0.9rem;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .section-head h2 {
      font-size: clamp(1.8rem, 3.2vw, 2.5rem);
      font-weight: 800;
      color: #0f172a;
      letter-spacing: -0.01em;
      line-height: 1.3;
      margin-bottom: 12px;
    }

    .section-head p {
      color: #64748b;
      font-size: 1.05rem;
      line-height: 1.7;
    }

    /* Service Cards */
    .service-card {
      background: #fff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      transition: all .35s ease;
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(234, 179, 8, 0.3);
    }

    .card-img-wrap {
      position: relative;
      overflow: hidden;
      height: 170px;
      flex-shrink: 0;
    }

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

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

    .card-img-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 40%, rgba(11, 18, 32, 0.65));
    }

    .card-icon {
      position: absolute;
      bottom: 14px;
      left: 20px;
      width: 46px;
      height: 46px;
      border-radius: 12px;
      background: linear-gradient(135deg, #fbbf24, #f59e0b);
      color: #0f172a;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      box-shadow: 0 6px 16px rgba(234, 179, 8, 0.4);
    }

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

    .card-body h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 10px;
    }

    .card-body p {
      font-size: 0.92rem;
      color: #64748b;
      line-height: 1.7;
      margin-bottom: 16px;
      flex: 1;
    }

    .card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #b45309;
      font-size: 0.9rem;
      font-weight: 600;
      transition: gap .25s ease;
    }

    .card-link:hover {
      gap: 10px;
      color: #92400e;
    }

    /* Dark Section */
    .dark-section {
      background: linear-gradient(135deg, #0b1220, #0f172a 50%, #0b1220);
      padding: 80px 0;
      position: relative;
      overflow: hidden;
    }

    .dark-section::before {
      content: '';
      position: absolute;
      width: 400px;
      height: 400px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(234, 179, 8, 0.15), transparent 70%);
      top: -100px;
      right: -100px;
      pointer-events: none;
    }

    .dark-section h2 {
      color: #fff;
      font-size: clamp(1.8rem, 3vw, 2.4rem);
      font-weight: 800;
      text-align: center;
      margin-bottom: 10px;
    }

    .dark-section .section-desc {
      color: rgba(255, 255, 255, 0.6);
      text-align: center;
      margin-bottom: 48px;
      font-size: 1.05rem;
    }

    .data-card {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 20px;
      padding: 32px 24px;
      text-align: center;
      transition: all .3s ease;
    }

    .data-card:hover {
      background: rgba(255, 255, 255, 0.1);
      transform: translateY(-4px);
      border-color: rgba(234, 179, 8, 0.3);
    }

    .data-card strong {
      display: block;
      font-size: 2.2rem;
      font-weight: 800;
      color: #fbbf24;
      line-height: 1.3;
      margin-bottom: 8px;
    }

    .data-card span {
      color: rgba(255, 255, 255, 0.65);
      font-size: 0.95rem;
    }

    /* Steps */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 28px;
    }

    .step-item {
      position: relative;
      background: #fff;
      border-radius: 20px;
      border: 1px solid var(--border-light);
      padding: 36px 28px 28px;
      box-shadow: var(--shadow-sm);
      transition: all .3s ease;
    }

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

    .step-num {
      position: absolute;
      top: 24px;
      right: 24px;
      font-size: 2.4rem;
      font-weight: 800;
      color: rgba(11, 18, 32, 0.06);
    }

    .step-item > i {
      font-size: 1.35rem;
      color: #b45309;
      margin-bottom: 20px;
      width: 56px;
      height: 56px;
      border-radius: 16px;
      background: rgba(234, 179, 8, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .step-item h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 10px;
    }

    .step-item p {
      color: #64748b;
      font-size: 0.92rem;
      line-height: 1.7;
    }

    /* FAQ */
    .faq-list {
      max-width: 820px;
      margin: 0 auto;
    }

    .faq-item {
      background: #fff;
      border: 1px solid var(--border-light);
      border-radius: 16px;
      margin-bottom: 14px;
      overflow: hidden;
      transition: all .3s ease;
      box-shadow: var(--shadow-sm);
    }

    .faq-item[open] {
      border-color: rgba(234, 179, 8, 0.4);
      box-shadow: var(--shadow-md);
    }

    .faq-item summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      list-style: none;
      padding: 20px 24px;
      font-size: 1.02rem;
      font-weight: 600;
      color: #0f172a;
      transition: color .25s ease;
    }

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

    .faq-item summary::after {
      content: '\f078';
      font-family: 'Font Awesome 6 Free';
      font-weight: 900;
      font-size: 0.85rem;
      color: #b45309;
      transition: transform .3s ease;
    }

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

    .faq-item summary:hover {
      color: #b45309;
    }

    .faq-body {
      padding: 0 24px 22px;
      color: #64748b;
      font-size: 0.95rem;
      line-height: 1.8;
      border-top: 1px dashed var(--border-light);
      padding-top: 16px;
    }

    /* CTA */
    .cta-section {
      padding: 100px 0;
      background-size: cover;
      background-position: center;
      position: relative;
    }

    .cta-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(120deg, rgba(11, 18, 32, 0.95), rgba(15, 23, 42, 0.8));
    }

    .cta-inner {
      text-align: center;
      color: #fff;
      position: relative;
      z-index: 2;
    }

    .cta-inner h2 {
      font-size: clamp(1.8rem, 3.2vw, 2.5rem);
      font-weight: 800;
      margin-bottom: 12px;
    }

    .cta-inner p {
      color: rgba(255, 255, 255, 0.7);
      margin-bottom: 32px;
      font-size: 1.05rem;
    }

    .btn-light {
      background: #fff;
      color: #0f172a;
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    }

    .btn-light:hover {
      transform: translateY(-3px);
      background: linear-gradient(135deg, #fbbf24, #f59e0b);
      box-shadow: 0 12px 28px rgba(234, 179, 8, 0.3);
    }

    /* Footer */
    .site-footer {
      background: #0b1220;
      color: rgba(255, 255, 255, 0.7);
      padding: 64px 0 32px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 48px;
    }

    .logo.text-white {
      color: #fff;
    }

    .footer-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 18px;
      letter-spacing: 0.02em;
    }

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

    .footer-links a,
    .footer-links span {
      color: rgba(255, 255, 255, 0.6);
      font-size: 0.9rem;
      transition: all .25s ease;
    }

    .footer-links a:hover {
      color: #fbbf24;
      padding-left: 4px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.85rem;
      color: rgba(255, 255, 255, 0.4);
    }

    /* Mobile Tab */
    .mobile-tab-bar {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      z-index: 200;
      background: rgba(15, 23, 42, 0.97);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-bottom: env(safe-area-inset-bottom);
    }

    .tab-item {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 4px;
      padding: 12px 8px;
      color: rgba(255, 255, 255, 0.6);
      font-size: 0.72rem;
      font-weight: 600;
      transition: all .25s ease;
    }

    .tab-item i {
      font-size: 1.3rem;
    }

    .tab-item.active {
      color: #fbbf24;
    }

    .tab-item:hover {
      color: #fff;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
      }
    }

    @media (max-width: 768px) {
      .main-nav {
        display: none;
      }

      .nav-cta {
        display: none !important;
      }

      .header-inner {
        height: 64px;
      }

      .page-hero {
        padding: 140px 0 80px;
      }

      .hero-actions {
        flex-direction: column;
      }

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

      .section {
        padding: 64px 0;
      }

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

      .mobile-tab-bar {
        display: flex;
      }

      body {
        padding-bottom: 68px;
      }
    }

    @media (max-width: 520px) {
      .hero-stats {
        grid-template-columns: 1fr;
        gap: 12px;
      }

      .stat-item {
        padding: 16px;
      }

      .stat-item strong {
        font-size: 1.5rem;
      }

      .btn {
        padding: 13px 24px;
        font-size: 0.95rem;
      }

      .card-body {
        padding: 20px 18px;
      }

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

      .data-card strong {
        font-size: 1.7rem;
      }
    }