/* roulang page: index */
:root {
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #EEF2FF;
    --accent: #0EA5E9;
    --accent-light: #E0F2FE;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --bg: #F8FAFC;
    --bg-white: #FFFFFF;
    --text: #0F172A;
    --text-secondary: #64748B;
    --text-muted: #94A3B8;
    --border: #E2E8F0;
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 24px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow: 0 4px 20px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
    --container: 1200px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --transition: all 0.25s ease;
}
* { 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: 1.7; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
ul, ol { list-style: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 28px; border-radius: var(--radius); font-size: 15px; font-weight: 600; border: none; cursor: pointer; transition: var(--transition); line-height: 1.4; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(79,70,229,0.35); }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(79,70,229,0.45); }
.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-light); transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--primary); box-shadow: var(--shadow); }
.btn-light:hover { background: var(--primary-light); transform: translateY(-2px); }
.btn-sm { padding: 8px 18px; font-size: 13px; border-radius: 10px; }
.btn-lg { padding: 16px 40px; font-size: 16px; border-radius: 16px; }
.badge { display: inline-block; padding: 4px 14px; border-radius: 50px; font-size: 12px; font-weight: 600; background: var(--primary-light); color: var(--primary); }
.badge-accent { background: var(--accent-light); color: var(--accent); }
.badge-success { background: #D1FAE5; color: var(--success); }
.badge-warning { background: #FEF3C7; color: #D97706; }
.tag { display: inline-block; padding: 6px 14px; border-radius: 50px; font-size: 13px; font-weight: 500; background: var(--bg); color: var(--text-secondary); border: 1px solid var(--border); transition: var(--transition); }
.tag:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,0.92); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid rgba(226,232,240,0.8); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
.brand-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-icon { width: 40px; height: 40px; border-radius: 12px; background: linear-gradient(135deg, var(--primary), var(--accent)); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; box-shadow: 0 4px 12px rgba(79,70,229,0.3); }
.brand-text { font-size: 20px; font-weight: 700; color: var(--text); letter-spacing: -0.02em; }
.main-nav { display: flex; align-items: center; gap: 6px; }
.nav-link { padding: 8px 16px; border-radius: 10px; font-size: 15px; font-weight: 500; color: var(--text-secondary); transition: var(--transition); }
.nav-link:hover, .nav-link.active { color: var(--primary); background: var(--primary-light); }
.nav-tools { display: flex; align-items: center; gap: 12px; }
.header-search { position: relative; display: flex; align-items: center; }
.header-search input { width: 180px; height: 40px; padding: 0 14px 0 38px; border-radius: 50px; border: 1.5px solid var(--border); background: var(--bg); font-size: 14px; color: var(--text); transition: var(--transition); outline: none; }
.header-search input:focus { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 4px rgba(79,70,229,0.1); width: 220px; }
.header-search i { position: absolute; left: 14px; color: var(--text-muted); font-size: 14px; pointer-events: none; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; border-radius: 8px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }

/* Hero */
.hero { position: relative; padding: 100px 0 90px; background: linear-gradient(135deg, rgba(79,70,229,0.98) 0%, rgba(14,165,233,0.92) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat; color: #fff; overflow: hidden; }
.hero::before { content: ''; position: absolute; top: -60%; right: -20%; width: 600px; height: 600px; border-radius: 50%; background: rgba(255,255,255,0.08); }
.hero::after { content: ''; position: absolute; bottom: -40%; left: -10%; width: 400px; height: 400px; border-radius: 50%; background: rgba(255,255,255,0.05); }
.hero .container { position: relative; z-index: 2; }
.hero-grid { display: flex; align-items: center; gap: 60px; }
.hero-content { flex: 1.1; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 6px 16px; border-radius: 50px; background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.25); font-size: 13px; font-weight: 500; margin-bottom: 24px; }
.hero-badge i { font-size: 14px; }
.hero h1 { font-size: 48px; font-weight: 800; line-height: 1.2; letter-spacing: -0.02em; margin-bottom: 20px; }
.hero p.lead { font-size: 18px; line-height: 1.8; color: rgba(255,255,255,0.9); margin-bottom: 36px; max-width: 560px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 24px; margin-top: 56px; padding-top: 28px; border-top: 1px solid rgba(255,255,255,0.2); }
.stat-item { flex: 1; }
.stat-item .num { font-size: 28px; font-weight: 700; line-height: 1.3; }
.stat-item .label { font-size: 13px; color: rgba(255,255,255,0.75); margin-top: 4px; }
.hero-visual { flex: 0.9; }
.hero-card { background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); border-radius: var(--radius-lg); padding: 28px; backdrop-filter: blur(10px); box-shadow: 0 24px 60px rgba(0,0,0,0.2); }
.hero-card .card-title { font-size: 16px; font-weight: 600; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.hero-card .card-title i { color: #FDE68A; }
.hero-card-item { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.1); }
.hero-card-item:last-child { border-bottom: none; }
.hero-card-item .dot { width: 8px; height: 8px; border-radius: 50%; background: #34D399; flex-shrink: 0; }
.hero-card-item .item-text { font-size: 14px; color: rgba(255,255,255,0.9); }
.hero-card-item .item-arrow { margin-left: auto; color: rgba(255,255,255,0.5); font-size: 13px; }

/* Section 通用 */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-white); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-head .badge { margin-bottom: 16px; }
.section-head h2 { font-size: 34px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.3; margin-bottom: 16px; }
.section-head p { color: var(--text-secondary); font-size: 16px; line-height: 1.8; }
.section-head .line { width: 48px; height: 4px; border-radius: 4px; background: linear-gradient(90deg, var(--primary), var(--accent)); margin: 20px auto 0; }

/* 特点卡片 */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card { background: var(--bg-white); border-radius: var(--radius-lg); padding: 32px 28px; border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: var(--transition); position: relative; overflow: hidden; }
.feature-card::after { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 3px; background: linear-gradient(90deg, var(--primary), var(--accent)); opacity: 0; transition: var(--transition); }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.feature-card:hover::after { opacity: 1; }
.feature-icon { width: 56px; height: 56px; border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 20px; background: var(--primary-light); color: var(--primary); }
.feature-card:nth-child(2) .feature-icon { background: var(--accent-light); color: var(--accent); }
.feature-card:nth-child(3) .feature-icon { background: #D1FAE5; color: var(--success); }
.feature-card:nth-child(4) .feature-icon { background: #FEF3C7; color: #D97706; }
.feature-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* 分类卡片 */
.category-section { background: var(--bg); }
.cat-slider { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.cat-card { background: var(--bg-white); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: var(--transition); position: relative; }
.cat-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.cat-media { position: relative; height: 200px; overflow: hidden; }
.cat-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.cat-card:hover .cat-media img { transform: scale(1.05); }
.cat-media::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,0.2), transparent); }
.cat-badge { position: absolute; top: 16px; left: 16px; z-index: 2; }
.cat-body { padding: 24px 24px 28px; }
.cat-body h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.cat-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 18px; }
.cat-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--primary); }
.cat-link i { transition: transform 0.25s ease; }
.cat-link:hover i { transform: translateX(4px); }

/* 资讯列表 */
.news-section { background: var(--bg-white); }
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.news-item { display: flex; gap: 20px; background: var(--bg); border-radius: var(--radius-lg); padding: 20px; border: 1px solid transparent; transition: var(--transition); }
.news-item:hover { border-color: var(--border); background: var(--bg-white); box-shadow: var(--shadow); transform: translateY(-3px); }
.news-thumb { width: 120px; height: 110px; border-radius: var(--radius); overflow: hidden; flex-shrink: 0; position: relative; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-content { flex: 1; min-width: 0; }
.news-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; flex-wrap: wrap; }
.news-meta .cat { font-size: 12px; color: var(--primary); font-weight: 600; background: var(--primary-light); padding: 2px 10px; border-radius: 50px; }
.news-meta .date { font-size: 12px; color: var(--text-muted); }
.news-content h3 { font-size: 15px; font-weight: 600; line-height: 1.5; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-content p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.empty-tip { grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--text-muted); font-size: 15px; background: var(--bg); border-radius: var(--radius-lg); }

/* 流程步骤 */
.step-section { background: var(--bg); }
.step-wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step; }
.step-card { background: var(--bg-white); border-radius: var(--radius-lg); padding: 40px 28px 32px; text-align: center; border: 1px solid var(--border); position: relative; transition: var(--transition); }
.step-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.step-card::before { counter-increment: step; content: counter(step); position: absolute; top: 16px; right: 20px; font-size: 48px; font-weight: 800; color: var(--primary-light); line-height: 1; }
.step-icon { width: 64px; height: 64px; border-radius: 50%; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 24px; margin: 0 auto 20px; }
.step-card:nth-child(2) .step-icon { background: var(--accent-light); color: var(--accent); }
.step-card:nth-child(3) .step-icon { background: #D1FAE5; color: var(--success); }
.step-card:nth-child(4) .step-icon { background: #FEF3C7; color: #D97706; }
.step-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 10px; }
.step-card p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; }

/* 图文区块 */
.platform-section { background: var(--bg-white); }
.platform-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; align-items: center; }
.platform-img { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); position: relative; }
.platform-img img { width: 100%; height: 320px; object-fit: cover; transition: transform 0.6s ease; }
.platform-img:hover img { transform: scale(1.04); }
.platform-content h2 { font-size: 30px; font-weight: 700; line-height: 1.3; margin-bottom: 18px; letter-spacing: -0.02em; }
.platform-content p { color: var(--text-secondary); font-size: 15px; line-height: 1.8; margin-bottom: 20px; }
.platform-list { margin-top: 20px; }
.platform-list li { display: flex; align-items: flex-start; gap: 12px; padding: 10px 0; font-size: 15px; color: var(--text); border-bottom: 1px dashed var(--border); }
.platform-list li:last-child { border-bottom: none; }
.platform-list li i { color: var(--success); margin-top: 4px; font-size: 16px; flex-shrink: 0; }

/* FAQ */
.faq-section { background: var(--bg); }
.faq-wrapper { max-width: 780px; margin: 0 auto; }
.faq-item { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 28px; margin-bottom: 16px; transition: var(--transition); }
.faq-item:hover { box-shadow: var(--shadow); border-color: var(--primary-light); }
.faq-item summary { display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-weight: 600; font-size: 16px; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .faq-icon { width: 28px; height: 28px; border-radius: 50%; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 12px; flex-shrink: 0; transition: transform 0.3s ease; }
.faq-item[open] summary .faq-icon { transform: rotate(45deg); }
.faq-item .faq-answer { padding-top: 14px; margin-top: 14px; border-top: 1px solid var(--border); color: var(--text-secondary); font-size: 15px; line-height: 1.8; }

/* CTA */
.cta-section { position: relative; padding: 90px 0; background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat; color: #fff; text-align: center; }
.cta-inner { max-width: 640px; margin: 0 auto; }
.cta-inner h2 { font-size: 34px; font-weight: 700; margin-bottom: 16px; letter-spacing: -0.02em; }
.cta-inner p { color: rgba(255,255,255,0.85); font-size: 16px; line-height: 1.8; margin-bottom: 32px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* Footer */
.site-footer { background: #0F172A; color: #94A3B8; padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; }
.footer-brand .footer-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-size: 22px; font-weight: 700; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.8; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 18px; }
.footer-col a { display: block; padding: 6px 0; color: #94A3B8; font-size: 14px; transition: var(--transition); }
.footer-col a:hover { color: #fff; padding-left: 6px; }
.footer-info p { font-size: 14px; line-height: 1.8; padding: 4px 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 20px 0; text-align: center; font-size: 13px; color: #64748B; }
.footer-bottom a { color: #94A3B8; }
.footer-bottom a:hover { color: #fff; }

/* 响应式断点 */
@media (max-width: 1024px) {
    .hero-grid { flex-direction: column; gap: 40px; }
    .hero-visual { width: 100%; }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .cat-slider { grid-template-columns: repeat(2, 1fr); }
    .step-wrap { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: 1fr; }
    .platform-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .section { padding: 60px 0; }
    .hero { padding: 70px 0 60px; }
    .hero h1 { font-size: 34px; }
    .hero p.lead { font-size: 16px; }
    .hero-stats { flex-wrap: wrap; gap: 16px; }
    .stat-item { flex: 1 1 40%; }
    .section-head h2 { font-size: 28px; }
    .main-nav { display: none; position: absolute; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 16px 24px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-lg); gap: 4px; }
    .main-nav.open { display: flex; }
    .nav-link { width: 100%; padding: 12px 16px; }
    .nav-tools .header-search { display: none; }
    .nav-toggle { display: flex; }
    .feature-grid { grid-template-columns: 1fr; }
    .cat-slider { grid-template-columns: 1fr; }
    .step-wrap { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .platform-img img { height: 240px; }
}
@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .hero h1 { font-size: 28px; }
    .hero p.lead { font-size: 15px; }
    .hero-actions .btn { width: 100%; }
    .btn-lg { width: 100%; }
    .news-thumb { width: 90px; height: 90px; }
    .faq-item { padding: 18px 20px; }
    .cta-actions .btn { width: 100%; }
}

/* roulang page: category1 */
:root {
      --primary: #1e5eff;
      --primary-dark: #0f46c0;
      --accent: #17c3b2;
      --accent-light: #e6f9f7;
      --bg: #f6f8fc;
      --surface: #ffffff;
      --text: #17233d;
      --text-weak: #5a6b85;
      --border: #e6ebf4;
      --radius-sm: 10px;
      --radius: 16px;
      --radius-lg: 24px;
      --shadow-sm: 0 2px 8px rgba(23,35,61,.06);
      --shadow-md: 0 10px 30px rgba(23,35,61,.09);
      --shadow-lg: 0 20px 48px rgba(23,35,61,.13);
    }

    * {
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color .2s ease;
    }
    img {
      max-width: 100%;
      display: block;
    }
    button, input {
      font-family: inherit;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* ===== Header ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255,255,255,.92);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border);
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      gap: 24px;
      height: 72px;
      position: relative;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 22px;
      color: var(--text);
      letter-spacing: -.02em;
      flex-shrink: 0;
    }
    .brand-icon {
      width: 40px;
      height: 40px;
      border-radius: 13px;
      background: linear-gradient(135deg, var(--primary), #4f8bff);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 17px;
      box-shadow: 0 6px 16px rgba(30,94,255,.28);
    }
    .brand-text {
      font-size: 22px;
    }
    .main-nav {
      display: flex;
      gap: 6px;
      margin: 0 auto;
    }
    .nav-link {
      padding: 9px 18px;
      border-radius: 99px;
      color: var(--text-weak);
      font-weight: 600;
      font-size: 15px;
      line-height: 1.4;
      transition: all .2s ease;
    }
    .nav-link:hover {
      color: var(--primary);
      background: rgba(30,94,255,.06);
    }
    .nav-link.active {
      color: var(--primary);
      background: rgba(30,94,255,.10);
    }
    .nav-tools {
      display: flex;
      align-items: center;
      gap: 14px;
      flex-shrink: 0;
    }
    .header-search {
      position: relative;
    }
    .header-search i {
      position: absolute;
      left: 14px;
      top: 50%;
      transform: translateY(-50%);
      font-size: 14px;
      color: var(--text-weak);
    }
    .header-search input {
      width: 200px;
      height: 38px;
      border-radius: 99px;
      border: 1px solid var(--border);
      background: var(--bg);
      padding: 0 16px 0 38px;
      font-size: 14px;
      outline: none;
      box-shadow: none;
      transition: all .2s ease;
    }
    .header-search input:focus {
      border-color: var(--primary);
      background: #fff;
      box-shadow: 0 0 0 3px rgba(30,94,255,.12);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border-radius: 99px;
      font-weight: 700;
      border: 1px solid transparent;
      transition: all .22s ease;
      cursor: pointer;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      border-color: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(30,94,255,.28);
    }
    .btn-white {
      background: #fff;
      color: var(--primary);
    }
    .btn-white:hover {
      background: #f2f6ff;
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(0,0,0,.14);
    }
    .btn-sm {
      height: 38px;
      padding: 0 20px;
      font-size: 14px;
    }
    .btn-lg {
      height: 52px;
      padding: 0 34px;
      font-size: 16px;
    }
    .nav-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: 0;
      padding: 8px;
      cursor: pointer;
    }
    .nav-toggle span {
      width: 22px;
      height: 2px;
      background: var(--text);
      border-radius: 3px;
      transition: all .25s ease;
    }

    /* ===== Page Banner ===== */
    .page-banner {
      position: relative;
      padding: 96px 0 100px;
      background: linear-gradient(rgba(23,35,61,.74), rgba(23,35,61,.56)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
      color: #fff;
      overflow: hidden;
    }
    .page-banner::after {
      content: '';
      position: absolute;
      right: -80px;
      bottom: -120px;
      width: 320px;
      height: 320px;
      border-radius: 50%;
      background: rgba(255,255,255,.05);
    }
    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: rgba(255,255,255,.82);
      margin-bottom: 20px;
    }
    .breadcrumb a:hover {
      color: #fff;
    }
    .breadcrumb i {
      font-size: 12px;
      opacity: .7;
    }
    .page-banner h1 {
      font-size: 44px;
      line-height: 1.25;
      font-weight: 800;
      margin: 0 0 18px;
      letter-spacing: -.02em;
    }
    .page-banner p {
      font-size: 18px;
      max-width: 680px;
      color: rgba(255,255,255,.92);
      margin: 0;
    }

    /* ===== Sections ===== */
    .section {
      padding: 88px 0;
    }
    .section-alt {
      background: var(--surface);
    }
    .section-head {
      max-width: 720px;
      margin: 0 auto 52px;
      text-align: center;
    }
    .eyebrow {
      display: inline-block;
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .08em;
      color: var(--primary);
      background: rgba(30,94,255,.08);
      border-radius: 99px;
      padding: 6px 16px;
      margin-bottom: 16px;
    }
    .section-head h2 {
      font-size: 34px;
      line-height: 1.3;
      margin: 0 0 14px;
      letter-spacing: -.02em;
    }
    .section-head p {
      color: var(--text-weak);
      font-size: 16px;
      margin: 0;
    }

    /* ===== Intro ===== */
    .intro-grid {
      align-items: center;
    }
    .intro-copy h2 {
      font-size: 32px;
      line-height: 1.35;
      margin: 0 0 16px;
      letter-spacing: -.02em;
    }
    .intro-copy > p {
      color: var(--text-weak);
      font-size: 16px;
      margin: 0 0 20px;
    }
    .check-list {
      list-style: none;
      margin: 0 0 28px;
      padding: 0;
    }
    .check-list li {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding: 8px 0;
      font-weight: 600;
      font-size: 15px;
    }
    .check-list li i {
      color: var(--accent);
      margin-top: 5px;
      font-size: 14px;
    }
    .stat-row {
      display: flex;
      gap: 36px;
      flex-wrap: wrap;
      padding-top: 20px;
      border-top: 1px solid var(--border);
    }
    .stat-item strong {
      font-size: 28px;
      color: var(--primary);
      display: block;
      line-height: 1.2;
    }
    .stat-item span {
      color: var(--text-weak);
      font-size: 14px;
    }
    .cover-frame {
      position: relative;
      border-radius: 20px;
      overflow: hidden;
      box-shadow: var(--shadow-lg);
    }
    .cover-frame img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .cover-badge {
      position: absolute;
      bottom: 20px;
      left: 20px;
      background: rgba(255,255,255,.92);
      border: 1px solid var(--border);
      border-radius: 13px;
      padding: 10px 16px;
      font-size: 14px;
      font-weight: 700;
      box-shadow: var(--shadow-md);
      display: flex;
      gap: 9px;
      align-items: center;
      color: var(--text);
    }
    .cover-badge i {
      color: var(--primary);
    }

    /* ===== Feature Cards ===== */
    .feature-col {
      display: flex;
      margin-bottom: 24px;
    }
    .feature-card {
      width: 100%;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 32px 26px;
      transition: all .25s ease;
    }
    .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }
    .feature-icon {
      width: 54px;
      height: 54px;
      border-radius: 15px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 21px;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), #4f8bff);
      margin-bottom: 20px;
      box-shadow: 0 8px 18px rgba(30,94,255,.22);
    }
    .feature-card h3 {
      font-size: 19px;
      margin: 0 0 10px;
      line-height: 1.4;
    }
    .feature-card p {
      color: var(--text-weak);
      font-size: 15px;
      margin: 0;
    }

    /* ===== Steps ===== */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .step-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 32px 24px 28px;
      text-align: center;
      transition: all .25s ease;
      position: relative;
    }
    .step-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }
    .step-num {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), #4f8bff);
      color: #fff;
      font-weight: 800;
      font-size: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 18px;
      box-shadow: 0 8px 18px rgba(30,94,255,.22);
    }
    .step-card h3 {
      font-size: 17px;
      margin: 0 0 8px;
    }
    .step-card p {
      color: var(--text-weak);
      font-size: 14px;
      margin: 0;
    }

    /* ===== Articles ===== */
    .article-col {
      display: flex;
      margin-bottom: 24px;
    }
    .article-card {
      width: 100%;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      transition: all .25s ease;
      display: flex;
      flex-direction: column;
    }
    .article-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }
    .article-thumb {
      overflow: hidden;
      aspect-ratio: 16 / 10;
    }
    .article-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s ease;
    }
    .article-card:hover .article-thumb img {
      transform: scale(1.05);
    }
    .article-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .article-body h3 {
      font-size: 18px;
      line-height: 1.5;
      margin: 0 0 10px;
    }
    .article-body p {
      color: var(--text-weak);
      font-size: 14px;
      margin: 0 0 14px;
      flex: 1;
    }
    .article-meta {
      display: flex;
      gap: 16px;
      color: var(--text-weak);
      font-size: 13px;
      border-top: 1px solid var(--border);
      padding-top: 14px;
      margin-top: auto;
    }

    /* ===== FAQ ===== */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: box-shadow .25s ease;
    }
    .faq-item:hover {
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 22px 26px;
      font-weight: 700;
      font-size: 16px;
      background: none;
      border: 0;
      cursor: pointer;
      color: var(--text);
      text-align: left;
    }
    .faq-question i {
      color: var(--primary);
      font-size: 15px;
      flex-shrink: 0;
      transition: transform .25s ease;
    }
    .faq-item.open .faq-question i {
      transform: rotate(180deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 26px;
      color: var(--text-weak);
      font-size: 15px;
      transition: max-height .3s ease, padding .3s ease;
    }
    .faq-item.open .faq-answer {
      max-height: 400px;
      padding-bottom: 24px;
    }

    /* ===== CTA ===== */
    .cta-box {
      position: relative;
      background: linear-gradient(135deg, var(--primary), #4f8bff);
      border-radius: var(--radius-lg);
      padding: 56px 40px;
      text-align: center;
      color: #fff;
      overflow: hidden;
    }
    .cta-box::before {
      content: '';
      position: absolute;
      right: -50px;
      top: -60px;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      background: rgba(255,255,255,.07);
    }
    .cta-box::after {
      content: '';
      position: absolute;
      left: -40px;
      bottom: -80px;
      width: 180px;
      height: 180px;
      border-radius: 50%;
      background: rgba(255,255,255,.06);
    }
    .cta-box h2 {
      font-size: 30px;
      margin: 0 0 14px;
      letter-spacing: -.02em;
      position: relative;
      z-index: 1;
    }
    .cta-box p {
      opacity: .92;
      max-width: 500px;
      margin: 0 auto 30px;
      font-size: 16px;
      position: relative;
      z-index: 1;
    }
    .cta-box .btn {
      position: relative;
      z-index: 1;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: #0e1628;
      color: #a7b3c6;
      padding: 64px 0 0;
      margin-top: 40px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
      gap: 40px;
      padding-bottom: 44px;
    }
    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #fff;
      font-size: 20px;
      font-weight: 800;
    }
    .footer-brand p {
      color: #8492a6;
      font-size: 14px;
      margin: 16px 0 0;
      max-width: 320px;
      line-height: 1.7;
    }
    .footer-col h4 {
      color: #fff;
      font-size: 16px;
      margin: 0 0 18px;
    }
    .footer-col a {
      display: block;
      color: #8492a6;
      font-size: 14px;
      padding: 5px 0;
      transition: color .2s ease;
    }
    .footer-col a:hover {
      color: #fff;
    }
    .footer-info p {
      color: #8492a6;
      font-size: 14px;
      display: flex;
      gap: 10px;
      align-items: center;
      padding: 5px 0;
      margin: 0;
    }
    .footer-info p i {
      color: #5d6f88;
      width: 16px;
      text-align: center;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,.08);
      padding: 20px 0;
      text-align: center;
      color: #68768c;
      font-size: 14px;
    }
    .footer-bottom a {
      color: #94a2b8;
    }
    .footer-bottom a:hover {
      color: #fff;
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .main-nav,
      .nav-tools {
        display: none;
      }
      .nav-toggle {
        display: flex;
        margin-left: auto;
      }
      .site-header.open {
        background: #fff;
        box-shadow: 0 12px 30px rgba(23,35,61,.08);
      }
      .site-header.open .nav-wrap {
        height: auto;
        flex-wrap: wrap;
        padding-top: 14px;
        padding-bottom: 18px;
      }
      .site-header.open .main-nav {
        display: flex;
        width: 100%;
        order: 3;
        flex-direction: column;
        gap: 2px;
        padding: 16px 0 8px;
      }
      .site-header.open .nav-link {
        padding: 12px 14px;
        font-size: 16px;
      }
      .site-header.open .nav-tools {
        display: flex;
        width: 100%;
        order: 4;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        padding-top: 14px;
        border-top: 1px solid var(--border);
      }
      .site-header.open .header-search {
        flex: 1;
      }
      .site-header.open .header-search input {
        width: 100%;
      }
      .page-banner {
        padding: 76px 0 80px;
      }
      .page-banner h1 {
        font-size: 34px;
      }
      .section {
        padding: 72px 0;
      }
      .section-head h2 {
        font-size: 29px;
      }
      .intro-copy h2 {
        font-size: 28px;
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-wrap {
        gap: 14px;
      }
      .brand-text {
        font-size: 19px;
      }
      .brand-icon {
        width: 36px;
        height: 36px;
        border-radius: 11px;
        font-size: 15px;
      }
      .page-banner {
        padding: 58px 0 64px;
      }
      .page-banner h1 {
        font-size: 28px;
      }
      .page-banner p {
        font-size: 16px;
      }
      .section {
        padding: 60px 0;
      }
      .section-head {
        margin-bottom: 38px;
      }
      .section-head h2 {
        font-size: 25px;
      }
      .intro-copy h2 {
        font-size: 24px;
      }
      .cover-frame {
        margin-top: 20px;
      }
      .steps-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
      }
      .cta-box {
        padding: 42px 28px;
      }
      .cta-box h2 {
        font-size: 25px;
      }
      .footer-grid {
        gap: 32px;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding-left: 18px;
        padding-right: 18px;
      }
      .page-banner {
        padding: 48px 0 52px;
      }
      .page-banner h1 {
        font-size: 24px;
      }
      .page-banner p {
        font-size: 15px;
      }
      .section {
        padding: 52px 0;
      }
      .section-head h2 {
        font-size: 22px;
      }
      .steps-grid {
        grid-template-columns: 1fr;
      }
      .stat-row {
        gap: 20px;
      }
      .stat-item strong {
        font-size: 24px;
      }
      .cta-box {
        padding: 32px 20px;
      }
      .cta-box h2 {
        font-size: 22px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }
      .footer-bottom {
        font-size: 13px;
      }
    }

/* roulang page: article */
:root {
            --primary: #0a66f7;
            --primary-dark: #064bb5;
            --primary-darker: #053a88;
            --primary-light: #e7f0ff;
            --accent: #f97316;
            --accent-dark: #d65c00;
            --accent-light: #fff1e6;
            --bg-body: #f4f6fb;
            --bg-white: #ffffff;
            --bg-soft: #eef1f7;
            --bg-deep: #0b1b33;
            --text-main: #17233b;
            --text-sub: #566276;
            --text-light: #8f9baf;
            --border: #e3e8f1;
            --border-light: #eff2f8;
            --radius-sm: 8px;
            --radius: 14px;
            --radius-lg: 22px;
            --shadow-xs: 0 1px 4px rgba(16,24,64,.05);
            --shadow-sm: 0 4px 16px rgba(16,24,64,.07);
            --shadow-md: 0 10px 34px rgba(16,24,64,.10);
            --shadow-lg: 0 20px 60px rgba(16,24,64,.14);
            --shadow-primary: 0 8px 24px rgba(10,102,247,.24);
            --header-h: 76px;
            --gap-section: 88px;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-body);
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        img { max-width: 100%; display: inline-block; vertical-align: middle; }
        a { color: inherit; text-decoration: none; transition: color .25s; }
        button, input, select, textarea { font-family: inherit; }
        ul, ol { list-style: none; }

        ::selection { background: rgba(10,102,247,.16); color: var(--primary-dark); }

        :focus-visible {
            outline: 3px solid rgba(10,102,247,.4);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: all .3s ease;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-primary);
        }
        .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 12px 32px rgba(10,102,247,.32); }
        .btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-primary); }
        .btn-outline { background: transparent; color: var(--primary); border: 2px solid rgba(10,102,247,.35); }
        .btn-outline:hover { border-color: var(--primary); background: var(--primary-light); }
        .btn-accent { background: var(--accent); color: #fff; box-shadow: 0 8px 24px rgba(249,115,22,.25); }
        .btn-accent:hover { background: var(--accent-dark); transform: translateY(-2px); }
        .btn-white { background: #fff; color: var(--primary); box-shadow: 0 8px 24px rgba(0,0,0,.18); }
        .btn-white:hover { background: var(--primary-light); transform: translateY(-2px); }
        .btn-ghost { background: rgba(255,255,255,.14); color: #fff; border: 1.5px solid rgba(255,255,255,.6); }
        .btn-ghost:hover { background: rgba(255,255,255,.25); border-color: #fff; }
        .btn-sm { padding: 9px 18px; font-size: 14px; }
        .btn-lg { padding: 16px 36px; font-size: 16px; border-radius: 14px; }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255,255,255,.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            gap: 24px;
            position: relative;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #28a0ff);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: var(--shadow-primary);
        }
        .brand-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: .5px;
            color: var(--text-main);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-link {
            padding: 10px 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-sub);
            transition: all .25s;
        }
        .nav-link:hover { color: var(--primary); background: var(--primary-light); }
        .nav-link.active { color: var(--primary); background: var(--primary-light); }

        .nav-tools {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-soft);
            border: 1px solid transparent;
            border-radius: 999px;
            padding: 8px 16px;
            width: 220px;
            transition: all .25s;
        }
        .header-search:focus-within {
            background: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(10,102,247,.10);
        }
        .header-search i { color: var(--text-light); font-size: 14px; }
        .header-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 14px;
            width: 100%;
            color: var(--text-main);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background .2s;
        }
        .nav-toggle:hover { background: var(--bg-soft); }
        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all .3s;
        }
        .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .nav-toggle.open span:nth-child(2) { opacity: 0; }
        .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

        .page-banner {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 68px 0 58px;
            color: #fff;
        }
        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(4,24,64,.88) 0%, rgba(7,50,112,.72) 55%, rgba(10,102,247,.52) 100%);
        }
        .page-banner .container { position: relative; z-index: 2; }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: rgba(255,255,255,.75);
            margin-bottom: 20px;
        }
        .breadcrumb a { color: rgba(255,255,255,.92); transition: color .2s; }
        .breadcrumb a:hover { color: #fff; text-decoration: underline; }
        .breadcrumb .sep { opacity: .5; font-size: 11px; }
        .breadcrumb .current {
            max-width: 300px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            color: #fff;
            font-weight: 600;
        }

        .page-banner h1 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 18px;
            max-width: 860px;
            color: #fff;
            text-shadow: 0 2px 18px rgba(0,0,0,.18);
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: rgba(255,255,255,.9);
            background: rgba(255,255,255,.14);
            border-radius: 999px;
            padding: 5px 14px;
        }
        .meta-item i { font-size: 12px; }

        .article-section {
            padding: 72px 0 90px;
        }
        .article-wrap {
            row-gap: 40px;
        }
        .article-main { min-width: 0; }

        .article-detail-body {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            padding: 44px 48px;
        }

        .article-detail-body h2 {
            font-size: 24px;
            font-weight: 800;
            margin: 36px 0 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-light);
            color: var(--text-main);
        }
        .article-detail-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin: 28px 0 10px;
            color: var(--text-main);
        }
        .article-detail-body h4 {
            font-size: 17px;
            font-weight: 700;
            margin: 22px 0 8px;
            color: var(--text-main);
        }
        .article-detail-body p {
            margin: 0 0 18px;
            color: var(--text-sub);
            line-height: 1.9;
        }
        .article-detail-body a {
            color: var(--primary);
            font-weight: 600;
        }
        .article-detail-body a:hover { text-decoration: underline; }
        .article-detail-body img {
            border-radius: 14px;
            margin: 18px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-detail-body ul,
        .article-detail-body ol {
            margin: 0 0 20px 22px;
            color: var(--text-sub);
            list-style: disc;
        }
        .article-detail-body ol { list-style: decimal; }
        .article-detail-body li { margin-bottom: 8px; line-height: 1.8; }
        .article-detail-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 22px;
            margin: 20px 0;
            border-radius: 0 10px 10px 0;
            color: var(--text-sub);
        }
        .article-detail-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            border-radius: 10px;
            overflow: hidden;
        }
        .article-detail-body th {
            background: var(--bg-soft);
            font-weight: 700;
            text-align: left;
            padding: 12px 16px;
            border: 1px solid var(--border);
            color: var(--text-main);
        }
        .article-detail-body td {
            padding: 12px 16px;
            border: 1px solid var(--border);
            color: var(--text-sub);
        }

        .article-tags {
            margin-top: 30px;
            padding-top: 22px;
            border-top: 1px solid var(--border-light);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .article-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: var(--bg-soft);
            color: var(--text-sub);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            transition: all .2s;
        }
        .article-tag:hover { background: var(--primary-light); color: var(--primary); }

        .article-empty {
            text-align: center;
            padding: 80px 30px;
        }
        .article-empty i {
            font-size: 56px;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .article-empty h2 {
            font-size: 26px;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .article-empty p {
            color: var(--text-sub);
            margin-bottom: 24px;
        }

        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .quick-entry {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 0;
            overflow: hidden;
            transition: box-shadow .3s;
        }
        .quick-entry:hover { box-shadow: var(--shadow-md); }
        .quick-entry-cover {
            height: 140px;
            overflow: hidden;
        }
        .quick-entry-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s;
        }
        .quick-entry:hover .quick-entry-cover img { transform: scale(1.04); }
        .quick-entry-body { padding: 24px 22px 26px; }
        .quick-entry-body h3 {
            font-size: 17px;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .quick-entry-body h3 i { color: var(--primary); }
        .quick-entry-body p {
            font-size: 13px;
            color: var(--text-sub);
            margin-bottom: 18px;
            line-height: 1.75;
        }
        .quick-entry-body .btn { width: 100%; }

        .widget {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            padding: 26px 24px;
        }
        .widget-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 17px;
            font-weight: 800;
            color: var(--text-main);
            padding-bottom: 14px;
            margin-bottom: 18px;
            position: relative;
        }
        .widget-title::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 42px;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
        }
        .widget-title i { color: var(--primary); }

        .category-list li { margin-bottom: 8px; }
        .category-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 11px 16px;
            border-radius: 10px;
            background: var(--bg-soft);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-sub);
            transition: all .25s;
        }
        .category-list a:hover {
            background: var(--primary-light);
            color: var(--primary);
            transform: translateX(3px);
        }
        .category-list .count {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 24px;
            height: 24px;
            border-radius: 999px;
            background: rgba(10,102,247,.1);
            color: var(--primary);
            font-size: 12px;
        }

        .side-post-list li {
            border-bottom: 1px dashed var(--border);
            padding: 11px 0;
        }
        .side-post-list li:last-child { border-bottom: none; padding-bottom: 0; }
        .side-post-list a { display: flex; flex-direction: column; gap: 4px; }
        .side-post-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            transition: color .2s;
        }
        .side-post-list a:hover .side-post-title { color: var(--primary); }
        .side-post-date { font-size: 12px; color: var(--text-light); }
        .widget-empty { font-size: 14px; color: var(--text-light); }

        .resource-section {
            padding: 80px 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 16px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-main);
        }
        .section-head p {
            color: var(--text-sub);
            font-size: 16px;
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .resource-grid { row-gap: 28px; }
        .resource-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xs);
            overflow: hidden;
            padding: 0;
            display: flex;
            flex-direction: column;
            height: 100%;
            transition: all .3s;
        }
        .resource-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: rgba(10,102,247,.18);
        }
        .resource-cover {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .resource-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s;
        }
        .resource-card:hover .resource-cover img { transform: scale(1.05); }
        .resource-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(10,30,70,.35));
        }
        .resource-body {
            padding: 24px 28px 30px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .resource-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
        }
        .resource-body h3 {
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .resource-body p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .card-link {
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap .25s;
        }
        .card-link:hover { gap: 10px; color: var(--primary-dark); }

        .faq-section {
            padding: 80px 0;
        }
        .faq-grid {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            box-shadow: var(--shadow-xs);
            padding: 26px 28px;
            margin-bottom: 16px;
            transition: box-shadow .3s;
        }
        .faq-item:hover { box-shadow: var(--shadow-sm); }
        .faq-item h3 {
            font-size: 17px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .faq-item h3 i { color: var(--primary); }
        .faq-item p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        .cta-section {
            position: relative;
            padding: 84px 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat fixed;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(4,20,60,.92), rgba(10,102,247,.78));
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255,255,255,.85);
            margin-bottom: 30px;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .site-footer {
            background: var(--bg-deep);
            color: #b6c2d6;
            padding: 70px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: #a5b2c8;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }
        .footer-col a {
            display: block;
            color: #a5b2c8;
            font-size: 14px;
            margin-bottom: 10px;
            transition: all .2s;
        }
        .footer-col a:hover {
            color: #fff;
            transform: translateX(4px);
        }
        .footer-info p {
            font-size: 14px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-info i {
            color: var(--primary);
            width: 16px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.08);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: #7e8aa3;
        }
        .footer-bottom a { color: #a5b2c8; }
        .footer-bottom a:hover { color: #fff; }

        @media (max-width: 1024px) {
            :root { --gap-section: 64px; }
            .article-sidebar {
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .header-search { width: 180px; }
        }

        @media (max-width: 768px) {
            :root { --header-h: 64px; }
            .nav-toggle { display: flex; }
            .main-nav {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                padding: 14px 22px;
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }
            .main-nav.open { display: flex; }
            .nav-link { padding: 12px 14px; }
            .nav-tools .header-search { display: none; }
            .page-banner { padding: 50px 0 42px; }
            .page-banner h1 { font-size: 24px; }
            .article-detail-body { padding: 28px 22px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .resource-section { padding: 64px 0; }
            .resource-grid { row-gap: 22px; }
            .cta-section { padding: 64px 0; }
            .cta-section h2 { font-size: 26px; }
            .section-head h2 { font-size: 26px; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .faq-section { padding: 60px 0; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 18px; }
            .nav-tools .btn span { display: none; }
            .nav-tools .btn { padding: 9px 14px; }
            .article-meta { gap: 8px; }
            .meta-item { padding: 4px 10px; font-size: 12px; }
            .resource-cover { height: 150px; }
            .resource-body { padding: 20px 20px 24px; }
            .faq-item { padding: 20px 18px; }
            .quick-entry-cover { height: 120px; }
            .breadcrumb .current { max-width: 160px; }
            .page-banner h1 { font-size: 21px; }
            .btn-lg { padding: 14px 26px; font-size: 15px; }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root {
  --primary: #0f6fd6;
  --primary-dark: #0a4fa3;
  --primary-light: #eaf2fd;
  --cyan: #00a8cc;
  --cyan-light: #e8f8fc;
  --navy: #0b1c2c;
  --gold: #ffb400;
  --gold-light: #fff6df;
  --dark: #0b1c2c;
  --text: #243447;
  --text-light: #5e7083;
  --bg: #f5f8fb;
  --white: #ffffff;
  --border: #e2eaf2;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 6px 24px rgba(20, 43, 75, 0.08);
  --shadow-lg: 0 18px 50px rgba(20, 43, 75, 0.14);
  --transition: all 0.25s ease;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ===== 基础 Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 12px;
  font-family: var(--font-sans);
  line-height: 1.3;
  color: var(--dark);
  font-weight: 800;
}

p { margin: 0 0 16px; }

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

img { max-width: 100%; display: inline-block; vertical-align: middle; }

button, input, select, textarea {
  font-family: var(--font-sans);
  font-size: 14px;
}

ul, ol { padding: 0; margin: 0; list-style: none; }

::selection { background: rgba(15, 111, 214, 0.18); color: var(--primary-dark); }

:focus-visible {
  outline: 3px solid rgba(15, 111, 214, 0.35);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ===== 容器 ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.4;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn i { font-size: 14px; }

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 18px rgba(15, 111, 214, 0.25);
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(15, 111, 214, 0.32);
}

.btn-secondary {
  background: var(--cyan);
  color: #fff;
  box-shadow: 0 6px 18px rgba(0, 168, 204, 0.25);
}
.btn-secondary:hover {
  background: #008fae;
  color: #fff;
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border-color: rgba(255,255,255,0.6);
  backdrop-filter: blur(4px);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.2);
  color: #fff;
  border-color: #fff;
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.55);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border-color: #fff;
}

.btn-lg { padding: 15px 30px; font-size: 16px; }
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-block { width: 100%; }

/* ===== 标签 / 徽章 ===== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 13px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
}
.tag-blue { background: var(--primary-light); color: var(--primary); }
.tag-cyan { background: var(--cyan-light); color: var(--cyan); }
.tag-gold { background: var(--gold-light); color: #b27a00; }
.tag-navy { background: #eef1f5; color: var(--navy); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 14px;
}
.eyebrow i { font-size: 12px; }

/* ===== Header / 导航 ===== */
.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 12px rgba(20, 43, 75, 0.05);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 21px;
  font-weight: 900;
  color: var(--dark);
  flex-shrink: 0;
}
.brand-logo:hover { color: var(--primary); }
.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  box-shadow: 0 6px 16px rgba(15, 111, 214, 0.25);
}
.brand-text { letter-spacing: 0.02em; }

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

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 9px 15px;
  border-radius: 9px;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--text);
  transition: var(--transition);
}
.nav-link:hover {
  background: var(--primary-light);
  color: var(--primary);
}
.nav-link.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 5px 14px rgba(15, 111, 214, 0.25);
}

.nav-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 14px;
  width: 210px;
  color: var(--text-light);
  transition: var(--transition);
}
.header-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15, 111, 214, 0.1);
  background: #fff;
}
.header-search i { font-size: 14px; }
.header-search input {
  border: none;
  background: transparent;
  outline: none;
  width: 100%;
  font-size: 13.5px;
  color: var(--text);
}
.header-search input::placeholder { color: #91a1b3; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  padding: 8px;
  align-items: center;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 3px;
  transition: var(--transition);
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-login {
  display: none !important;
  margin-top: 8px;
}

/* ===== Hero / Banner ===== */
.page-hero {
  position: relative;
  background:
    linear-gradient(135deg, rgba(11, 28, 44, 0.92), rgba(15, 111, 214, 0.78)),
    url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  padding: 90px 0 72px;
  color: #fff;
}
.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(800px circle at 85% 20%, rgba(0, 168, 204, 0.22), transparent 50%);
  pointer-events: none;
}

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

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 22px;
  flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255,255,255,0.75); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { opacity: 0.5; }
.breadcrumb .current { color: #fff; font-weight: 700; }

.page-hero h1 {
  font-size: 42px;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.01em;
  line-height: 1.25;
  max-width: 720px;
}
.page-hero .hero-desc {
  font-size: 16.5px;
  line-height: 1.8;
  color: rgba(255,255,255,0.85);
  max-width: 680px;
  margin-bottom: 30px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.15);
}
.hero-stats .stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-stats .stat b {
  font-size: 26px;
  color: #fff;
  line-height: 1.2;
}
.hero-stats .stat span {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
}

/* ===== Section 通用 ===== */
.section {
  padding: 84px 0;
  background: var(--white);
}
.section-alt {
  background: var(--bg);
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 50px;
}
.section-head.left {
  text-align: left;
  margin: 0 0 28px;
}
.section-head h2 {
  font-size: 32px;
  margin-bottom: 12px;
}
.section-head p {
  font-size: 15.5px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 0;
}

/* ===== 登录方式卡片 ===== */
.method-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px 24px 26px;
  text-align: center;
  height: 100%;
  transition: var(--transition);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.method-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--cyan));
  opacity: 0;
  transition: var(--transition);
}
.method-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(15, 111, 214, 0.2);
}
.method-card:hover::before { opacity: 1; }

.method-icon {
  width: 62px;
  height: 62px;
  margin: 0 auto 18px;
  border-radius: 16px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 25px;
  transition: var(--transition);
}
.method-icon.icon-cyan { background: var(--cyan-light); color: var(--cyan); }
.method-icon.icon-navy { background: #eef1f5; color: var(--navy); }
.method-icon.icon-gold { background: var(--gold-light); color: #b27a00; }

.method-card:hover .method-icon { background: var(--primary); color: #fff; box-shadow: 0 8px 22px rgba(15,111,214,0.28); }
.method-card:hover .method-icon.icon-cyan { background: var(--cyan); box-shadow: 0 8px 22px rgba(0,168,204,0.28); }
.method-card:hover .method-icon.icon-navy { background: var(--navy); box-shadow: 0 8px 22px rgba(11,28,44,0.22); }
.method-card:hover .method-icon.icon-gold { background: var(--gold); box-shadow: 0 8px 22px rgba(255,180,0,0.3); }

.method-card h3 { font-size: 17.5px; margin-bottom: 10px; }
.method-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; margin-bottom: 16px; }

/* ===== 步骤流程 ===== */
.steps-wrap {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
  padding-left: 64px;
}
.steps-wrap::before {
  content: '';
  position: absolute;
  left: 22px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), var(--cyan));
  border-radius: 4px;
}

.step-item {
  position: relative;
  margin-bottom: 28px;
}
.step-item:last-child { margin-bottom: 0; }

.step-num {
  position: absolute;
  left: -64px;
  top: 2px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 800;
  box-shadow: 0 6px 18px rgba(15, 111, 214, 0.28);
  border: 4px solid #fff;
  z-index: 2;
}
.step-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.step-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateX(6px);
  border-color: rgba(15,111,214,0.2);
}
.step-card h3 {
  font-size: 17px;
  margin-bottom: 6px;
}
.step-card p {
  font-size: 14px;
  color: var(--text-light);
  margin: 0;
  line-height: 1.7;
}

/* ===== 安全区块 ===== */
.security-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.security-media img {
  width: 100%;
  height: 440px;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}
.security-media:hover img { transform: scale(1.03); }

.img-badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  background: rgba(255,255,255,0.94);
  padding: 9px 18px;
  border-radius: 100px;
  font-weight: 800;
  font-size: 13.5px;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.12);
  backdrop-filter: blur(4px);
}

.security-wrap { align-items: center; }

.check-list { margin-top: 8px; }
.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 14.5px;
  line-height: 1.7;
}
.check-list li:last-child { border-bottom: none; }
.check-list i {
  color: var(--cyan);
  font-size: 17px;
  margin-top: 4px;
  flex-shrink: 0;
}
.check-list b { color: var(--dark); }

/* ===== 文章卡片 ===== */
.article-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(15,111,214,0.18);
}

.article-thumb {
  height: 180px;
  overflow: hidden;
  background: var(--bg);
  position: relative;
}
.article-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}
.article-card:hover .article-thumb img { transform: scale(1.06); }

.article-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-light);
  font-size: 12.5px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.article-meta .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: #b6c4d2;
}
.article-body h3 {
  font-size: 17px;
  line-height: 1.5;
  margin-bottom: 10px;
}
.article-body p {
  font-size: 13.5px;
  color: var(--text-light);
  line-height: 1.75;
  margin-bottom: 16px;
  flex: 1;
}
.article-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
}
.article-link:hover { gap: 10px; color: var(--primary-dark); }

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:last-child { margin-bottom: 0; }
.faq-item.active {
  box-shadow: var(--shadow);
  border-color: rgba(15,111,214,0.3);
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text);
  text-align: left;
  transition: var(--transition);
}
.faq-q:hover { color: var(--primary); }
.faq-q i {
  font-size: 14px;
  color: var(--text-light);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}
.faq-item.active .faq-q i {
  transform: rotate(180deg);
  color: var(--primary);
}
.faq-a {
  display: none;
  padding: 0 24px 22px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-light);
}
.faq-item.active .faq-a { display: block; }

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, #0b1c2c, #0a4fa3);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(700px circle at 20% 30%, rgba(0,168,204,0.3), transparent 50%);
}
.cta-section .container { position: relative; z-index: 2; }

.cta-box {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 0;
}
.cta-box h2 {
  color: #fff;
  font-size: 32px;
  margin-bottom: 14px;
}
.cta-box p {
  color: rgba(255,255,255,0.75);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 30px;
}
.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.72);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 42px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 22px;
  font-weight: 900;
}
.footer-logo:hover { color: #fff; opacity: 0.9; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,0.55);
  margin: 16px 0 0;
  max-width: 360px;
}

.footer-col h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 18px;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,0.6);
  padding: 6px 0;
  font-size: 14px;
  transition: var(--transition);
}
.footer-col a:hover {
  color: #fff;
  padding-left: 5px;
}

.footer-info p {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 6px 0;
  font-size: 13.5px;
  color: rgba(255,255,255,0.55);
  margin: 0;
}
.footer-info i {
  color: rgba(255,255,255,0.4);
  width: 16px;
  text-align: center;
  margin-top: 4px;
}

.footer-bottom {
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.38);
}
.footer-bottom a { color: rgba(255,255,255,0.55); }
.footer-bottom a:hover { color: #fff; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .nav-wrap { gap: 12px; }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(14px);
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 18px 24px 24px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 18px 40px rgba(20,43,75,0.1);
    margin: 0;
  }
  .main-nav.is-open { display: flex; }

  .nav-link {
    padding: 12px 14px;
    font-size: 15px;
  }

  .nav-tools {
    display: none;
  }

  .nav-toggle { display: flex; }

  .mobile-login { display: inline-flex !important; }

  .header-search { width: 180px; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .page-hero { padding: 64px 0 52px; }
  .page-hero h1 { font-size: 30px; }
  .page-hero .hero-desc { font-size: 15px; }
  .section-head h2 { font-size: 26px; }
  .cta-box h2 { font-size: 26px; }

  .hero-stats { gap: 28px; }

  .security-media img { height: 320px; }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }

  .nav-wrap { min-height: 64px; }
  .brand-text { font-size: 18px; }
  .brand-icon { width: 34px; height: 34px; font-size: 15px; }

  .page-hero h1 { font-size: 26px; }
  .hero-actions .btn { width: 100%; }

  .hero-stats { gap: 20px; flex-direction: column; align-items: flex-start; }

  .steps-wrap { padding-left: 50px; }
  .step-num { left: -50px; width: 40px; height: 40px; font-size: 13px; }
  .step-card { padding: 18px 18px; }

  .section-head h2 { font-size: 24px; }
  .section-head p { font-size: 14px; }

  .footer-grid { grid-template-columns: 1fr; gap: 26px; }

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

/* roulang page: category3 */
:root {
            --primary: #1a56db;
            --primary-dark: #1e40af;
            --primary-light: #3b82f6;
            --accent: #06b6d4;
            --accent-light: #67e8f9;
            --dark: #0f172a;
            --dark-2: #1e293b;
            --bg: #f8fafc;
            --white: #ffffff;
            --text: #1e293b;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius: 14px;
            --radius-lg: 22px;
            --shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
            --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.12);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: inline-block;
            vertical-align: middle;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease;
        }

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

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            border: 2px solid transparent;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            background: transparent;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(26, 86, 219, 0.35);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 24px rgba(26, 86, 219, 0.28);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(26, 86, 219, 0.35);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 16px rgba(26, 86, 219, 0.25);
        }

        .btn-ghost {
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(6px);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
        }

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

        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
            border-radius: 40px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 16px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-size: 20px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: 0.5px;
        }

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

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-size: 16px;
            box-shadow: 0 6px 18px rgba(26, 86, 219, 0.3);
        }

        .brand-text {
            font-size: 22px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 40px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
            position: relative;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(26, 86, 219, 0.06);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            background: rgba(26, 86, 219, 0.1);
        }

        .nav-tools {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 40px;
            padding: 8px 16px;
            width: 220px;
            transition: var(--transition);
        }

        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.12);
            background: #fff;
        }

        .header-search i {
            color: var(--text-weak);
            font-size: 13px;
        }

        .header-search input {
            border: none;
            background: transparent;
            font-size: 14px;
            width: 100%;
        }

        .header-search input::placeholder {
            color: var(--text-weak);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--dark);
            border-radius: 4px;
            transition: var(--transition);
        }

        .nav-toggle:hover span {
            background: var(--primary);
        }

        .page-hero {
            position: relative;
            padding: 100px 0 90px;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(30, 41, 59, 0.72)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            right: -120px;
            bottom: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.22), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-content {
            max-width: 720px;
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.3);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 40px;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .hero-content h1 {
            font-size: 40px;
            line-height: 1.25;
            font-weight: 800;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .hero-content p {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 28px;
            max-width: 600px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .section {
            padding: 90px 0;
        }

        .section-header {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            background: rgba(26, 86, 219, 0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            padding: 5px 16px;
            border-radius: 30px;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        .about-section {
            background: var(--white);
            border-bottom: 1px solid var(--border);
        }

        .about-grid {
            align-items: center;
            gap: 30px;
        }

        .about-content {
            padding-right: 30px;
        }

        .about-content .section-tag {
            margin-bottom: 12px;
        }

        .about-content h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .about-content p {
            color: var(--text-weak);
            font-size: 16px;
            margin-bottom: 24px;
        }

        .feature-list {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }

        .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
        }

        .feature-list li:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }

        .feature-list li i {
            color: var(--primary);
            font-size: 15px;
        }

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

        .about-image::after {
            content: '';
            position: absolute;
            inset: 0;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-lg);
            pointer-events: none;
        }

        .about-image img {
            width: 100%;
            display: block;
        }

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

        .service-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 30px 26px;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-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);
        }

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

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

        .card-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(26, 86, 219, 0.1), rgba(6, 182, 212, 0.1));
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 20px;
            transition: var(--transition);
        }

        .service-card:hover .card-icon {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            box-shadow: 0 8px 24px rgba(26, 86, 219, 0.3);
        }

        .service-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 0;
        }

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

        .service-card .card-tags span {
            background: var(--bg);
            color: var(--text);
            border: 1px solid var(--border);
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 30px;
            transition: var(--transition);
        }

        .service-card:hover .card-tags span {
            background: rgba(26, 86, 219, 0.06);
            border-color: var(--primary-light);
            color: var(--primary);
        }

        .stats-section {
            background: linear-gradient(135deg, var(--dark), var(--dark-2));
            padding: 80px 0;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            top: -200px;
            right: -100px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.15), transparent 70%);
            border-radius: 50%;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            text-align: center;
        }

        .stat-number {
            font-size: 44px;
            font-weight: 800;
            background: linear-gradient(135deg, #fff, var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 6px;
            letter-spacing: 1px;
        }

        .stat-label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            letter-spacing: 0.5px;
        }

        .process-section {
            background: var(--white);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 34px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0.25;
            z-index: 0;
        }

        .step-item {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 10px;
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 68px;
            height: 68px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 18px;
            box-shadow: 0 10px 30px rgba(26, 86, 219, 0.25);
            position: relative;
        }

        .step-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
        }

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

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

        .faq-list {
            max-width: 840px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

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

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

        .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: 14px;
            color: var(--text-weak);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item[open] summary {
            color: var(--primary);
            background: rgba(26, 86, 219, 0.02);
        }

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

        .faq-item .faq-answer {
            padding: 0 24px 22px;
            color: var(--text-weak);
            font-size: 15px;
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }

        .cta-section {
            padding: 30px 0 90px;
            background: var(--bg);
        }

        .cta-box {
            background: linear-gradient(135deg, var(--dark), var(--dark-2));
            border-radius: 24px;
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -120px;
            left: 50%;
            transform: translateX(-50%);
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.28), transparent 65%);
            border-radius: 50%;
        }

        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }

        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 1;
        }

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

        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 70px 0 0;
            position: relative;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
        }

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

        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-logo:hover {
            color: var(--accent-light);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 360px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            line-height: 2.4;
            transition: var(--transition);
        }

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

        .footer-info p {
            font-size: 14px;
            line-height: 2.2;
            color: rgba(255, 255, 255, 0.65);
        }

        .footer-info i {
            color: var(--accent);
            margin-right: 8px;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 22px 0;
            text-align: center;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
        }

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

        @media (max-width: 1024px) {
            .main-nav {
                gap: 2px;
            }
            .nav-link {
                padding: 8px 12px;
                font-size: 14px;
            }
            .header-search {
                width: 180px;
            }
            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr;
            }
            .footer-info {
                grid-column: span 3;
            }
            .process-steps {
                grid-template-columns: repeat(3, 1fr);
                gap: 30px;
            }
            .process-steps::before {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                padding: 20px 24px;
                gap: 8px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 40px rgba(15, 23, 42, 0.1);
                transform: translateY(-20px);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                z-index: 99;
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-link {
                width: 100%;
                padding: 12px 16px;
                font-size: 16px;
                border-radius: 12px;
            }

            .nav-tools .header-search {
                display: none;
            }

            .nav-tools .btn-sm {
                display: none;
            }

            .page-hero {
                padding: 70px 0 60px;
            }

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

            .hero-content p {
                font-size: 15px;
            }

            .section {
                padding: 60px 0;
            }

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

            .about-content {
                padding-right: 0;
                text-align: center;
            }

            .feature-list {
                grid-template-columns: 1fr;
                text-align: left;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }

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

            .step-item {
                text-align: center;
            }

            .cta-box {
                padding: 40px 24px;
            }

            .cta-box h2 {
                font-size: 26px;
            }

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

            .footer-info {
                grid-column: span 1;
            }

            .footer-bottom {
                font-size: 13px;
                line-height: 1.6;
            }
        }

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

            .brand-text {
                font-size: 18px;
            }

            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 14px;
            }

            .hero-content h1 {
                font-size: 26px;
            }

            .hero-content p {
                font-size: 14px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }

            .section-header h2 {
                font-size: 22px;
            }

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

            .stat-number {
                font-size: 36px;
            }

            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }

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

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

            .footer-bottom {
                padding: 18px 12px;
            }
        }