/* roulang page: index */
:root {
  --primary: #1a56db;
  --primary-dark: #1e40af;
  --primary-light: #dbeafe;
  --secondary: #06b6d4;
  --secondary-light: #cffafe;
  --accent: #f59e0b;
  --accent-light: #fef3c7;
  --bg: #ffffff;
  --bg-light: #f8fafc;
  --bg-dark: #0f172a;
  --text: #0f172a;
  --text-light: #64748b;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow: 0 4px 24px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif; color: var(--text); background: var(--bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
input:focus, button:focus, a:focus { outline: 2px solid var(--primary); outline-offset: 2px; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-alt { background: var(--bg-light); }
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag { display: inline-flex; align-items: center; gap: 8px; background: var(--primary-light); color: var(--primary); padding: 6px 16px; border-radius: 100px; font-size: 13px; font-weight: 600; letter-spacing: 1px; margin-bottom: 16px; }
.section-title { font-size: 36px; font-weight: 800; line-height: 1.3; letter-spacing: -0.5px; margin-bottom: 12px; }
.section-subtitle { font-size: 16px; color: var(--text-light); max-width: 640px; margin: 0 auto; line-height: 1.8; }

/* Header */
.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); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 32px; }
.brand-logo { font-size: 20px; font-weight: 800; color: var(--text); display: flex; align-items: center; gap: 10px; letter-spacing: -0.3px; white-space: nowrap; }
.brand-logo .logo-icon { width: 36px; height: 36px; background: linear-gradient(135deg, var(--primary), var(--secondary)); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 16px; flex-shrink: 0; }
.brand-logo:hover { color: var(--primary); }
.main-nav { display: flex; align-items: center; gap: 32px; }
.nav-link { font-size: 15px; font-weight: 500; color: var(--text-light); padding: 6px 2px; position: relative; white-space: nowrap; }
.nav-link::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--primary); transition: var(--transition); border-radius: 2px; }
.nav-link:hover { color: var(--primary); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { width: 100%; }
.header-actions { display: flex; align-items: center; gap: 16px; }
.search-box { position: relative; }
.search-box input { width: 220px; height: 38px; padding: 0 16px 0 38px; border: 1px solid var(--border); border-radius: 100px; font-size: 14px; background: var(--bg-light); transition: var(--transition); }
.search-box input:focus { width: 260px; border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(26,86,219,0.1); }
.search-box i { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: 14px; pointer-events: none; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-size: 15px; font-weight: 600; padding: 12px 28px; border-radius: 100px; border: none; cursor: pointer; transition: var(--transition); line-height: 1.4; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 16px rgba(26,86,219,0.25); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(26,86,219,0.35); }
.btn-light { background: #fff; color: var(--text); box-shadow: var(--shadow); }
.btn-light:hover { background: var(--bg-light); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary-light); transform: translateY(-2px); }
.btn-lg { padding: 16px 40px; font-size: 16px; }
.hamburger { display: none; background: none; border: none; font-size: 24px; color: var(--text); cursor: pointer; padding: 8px; }

/* Hero */
.hero { position: relative; padding: 120px 0 96px; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,23,42,0.85), rgba(26,86,219,0.65)); }
.hero .container { position: relative; z-index: 2; text-align: center; }
.hero-tag { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.3); color: #fff; padding: 8px 20px; border-radius: 100px; font-size: 14px; margin-bottom: 24px; backdrop-filter: blur(8px); }
.hero-title { font-size: 52px; font-weight: 800; color: #fff; line-height: 1.25; letter-spacing: -1px; margin-bottom: 16px; }
.hero-subtitle { font-size: 18px; color: rgba(255,255,255,0.9); max-width: 720px; margin: 0 auto 32px; line-height: 1.8; }
.hero-search { max-width: 560px; margin: 0 auto 40px; position: relative; }
.hero-search input { width: 100%; height: 56px; padding: 0 60px 0 20px; border: none; border-radius: 16px; font-size: 15px; background: #fff; box-shadow: 0 8px 32px rgba(0,0,0,0.15); }
.hero-search button { position: absolute; right: 8px; top: 8px; bottom: 8px; width: 44px; border: none; background: var(--primary); color: #fff; border-radius: 12px; cursor: pointer; transition: var(--transition); }
.hero-search button:hover { background: var(--primary-dark); }
.hero-stats { display: flex; justify-content: center; gap: 48px; margin-top: 48px; flex-wrap: wrap; }
.hero-stat { text-align: center; color: #fff; }
.hero-stat .num { font-size: 36px; font-weight: 800; display: block; line-height: 1.2; }
.hero-stat .label { font-size: 14px; color: rgba(255,255,255,0.8); margin-top: 4px; }

/* Feature Cards */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.feature-card { background: #fff; border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow); border: 1px solid var(--border); transition: var(--transition); }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
.feature-icon { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 20px; }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-light); line-height: 1.65; }

/* Category Cards */
.category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.category-card { border-radius: var(--radius-lg); overflow: hidden; background: #fff; box-shadow: var(--shadow); border: 1px solid var(--border); transition: var(--transition); display: flex; flex-direction: column; }
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.category-card .card-img { height: 220px; overflow: hidden; position: relative; }
.category-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.category-card:hover .card-img img { transform: scale(1.05); }
.category-card .card-body { padding: 32px; flex: 1; display: flex; flex-direction: column; }
.category-card .card-body h3 { font-size: 22px; font-weight: 700; margin-bottom: 12px; }
.category-card .card-body p { color: var(--text-light); font-size: 15px; line-height: 1.7; margin-bottom: 20px; flex: 1; }
.card-link { color: var(--primary); font-weight: 600; font-size: 15px; display: inline-flex; align-items: center; gap: 8px; }
.card-link i { transition: transform 0.3s ease; }
.card-link:hover i { transform: translateX(4px); }

/* News List */
.news-list { display: flex; flex-direction: column; gap: 24px; max-width: 960px; margin: 0 auto; }
.news-item { display: flex; gap: 24px; background: #fff; border-radius: var(--radius-lg); padding: 24px; box-shadow: var(--shadow); border: 1px solid var(--border); transition: var(--transition); }
.news-item:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.news-thumb { width: 120px; height: 90px; border-radius: 10px; overflow: hidden; flex-shrink: 0; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-content { flex: 1; }
.news-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; flex-wrap: wrap; }
.badge { display: inline-flex; align-items: center; gap: 6px; background: var(--secondary-light); color: #0e7490; padding: 4px 12px; border-radius: 100px; font-size: 12px; font-weight: 600; }
.news-content h3 { font-size: 17px; font-weight: 600; margin-bottom: 6px; line-height: 1.5; }
.news-content h3 a:hover { color: var(--primary); }
.news-content p { font-size: 14px; color: var(--text-light); line-height: 1.6; margin-bottom: 8px; }
.news-date { font-size: 13px; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }

/* Steps */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; }
.step-card { text-align: center; padding: 40px 24px; background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow); border: 1px solid var(--border); position: relative; transition: var(--transition); }
.step-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.step-num { width: 48px; height: 48px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 800; margin: 0 auto 20px; }
.step-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--text-light); line-height: 1.65; }

/* FAQ */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { background: #fff; border-radius: var(--radius-lg); border: 1px solid var(--border); margin-bottom: 16px; overflow: hidden; transition: var(--transition); }
.faq-item:hover { box-shadow: var(--shadow); border-color: var(--primary-light); }
.faq-item summary { padding: 24px 32px; cursor: pointer; font-size: 16px; font-weight: 600; display: flex; align-items: center; justify-content: space-between; gap: 16px; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '\f107'; font-family: 'Font Awesome 6 Free'; font-weight: 900; color: var(--text-muted); transition: var(--transition); }
.faq-item[open] summary::after { transform: rotate(180deg); }
.faq-item[open] summary { border-bottom: 1px solid var(--border); }
.faq-answer { padding: 24px 32px; color: var(--text-light); font-size: 15px; line-height: 1.8; }

/* CTA */
.cta-section { background: linear-gradient(135deg, #1e40af, #1a56db, #0891b2); padding: 80px 0; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.15; }
.cta-content { position: relative; z-index: 2; text-align: center; color: #fff; }
.cta-content h2 { font-size: 40px; font-weight: 800; margin-bottom: 16px; }
.cta-content p { font-size: 17px; color: rgba(255,255,255,0.9); max-width: 600px; margin: 0 auto 32px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Footer */
.site-footer { background: var(--bg-dark); color: #94a3b8; padding: 80px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand { font-size: 20px; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer-brand .logo-icon { width: 32px; height: 32px; background: linear-gradient(135deg, var(--primary), var(--secondary)); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 14px; color: #fff; }
.footer-col p { font-size: 14px; line-height: 1.8; margin-bottom: 8px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 20px; }
.footer-col a { display: block; font-size: 14px; color: #94a3b8; padding: 4px 0; }
.footer-col a:hover { color: #fff; padding-left: 6px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 32px; text-align: center; font-size: 14px; color: #64748b; }
.footer-bottom a { color: #94a3b8; }
.footer-bottom a:hover { color: #fff; }

/* Mobile Nav */
.mobile-nav { display: none; position: fixed; top: 72px; left: 0; right: 0; background: #fff; box-shadow: var(--shadow-lg); padding: 24px; flex-direction: column; gap: 16px; z-index: 99; border-bottom: 1px solid var(--border); }
.mobile-nav.open { display: flex; }
.mobile-nav a { font-size: 16px; padding: 12px 0; border-bottom: 1px solid var(--border); color: var(--text); }
.mobile-nav a:hover { color: var(--primary); }
.mobile-nav a.active { color: var(--primary); font-weight: 700; }

/* Responsive */
@media (max-width: 1024px) {
  .main-nav { display: none; }
  .hamburger { display: block; }
  .header-actions .search-box { display: none; }
  .header-actions .btn { padding: 10px 20px; font-size: 14px; }
  .hero-title { font-size: 40px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .section { padding: 64px 0; }
  .hero { padding: 80px 0 64px; }
  .hero-title { font-size: 32px; }
  .hero-subtitle { font-size: 15px; }
  .hero-stat .num { font-size: 28px; }
  .hero-stats { gap: 24px; }
  .features-grid { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .news-item { flex-direction: column; }
  .news-thumb { width: 100%; height: 180px; }
  .section-title { font-size: 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-content h2 { font-size: 28px; }
  .header-inner { height: 64px; }
  .brand-logo { font-size: 17px; }
}
@media (max-width: 520px) {
  .hero-title { font-size: 26px; }
  .header-actions .btn { padding: 8px 16px; font-size: 13px; }
  .btn-lg { padding: 14px 28px; font-size: 15px; }
  .section-tag { font-size: 12px; }
}

/* roulang page: category1 */
:root {
  --primary: #4f6ef7;
  --primary-dark: #3a55d9;
  --primary-light: #eef1fe;
  --accent: #f59e0b;
  --accent-light: #fff8e8;
  --success: #16a34a;
  --bg: #f7f8fd;
  --surface: #ffffff;
  --text: #1e2340;
  --text-muted: #5b6478;
  --border: #e6e9f2;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 4px 14px rgba(30, 35, 64, .06);
  --shadow: 0 12px 36px rgba(30, 35, 64, .08);
  --shadow-lg: 0 24px 56px rgba(30, 35, 64, .12);
  --header-h: 74px;
  --transition: .25s cubic-bezier(.4, 0, .2, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: color var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
input, button { font-family: inherit; border: none; outline: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; position: relative; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 52px; }
.section-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--primary-light); color: var(--primary);
  font-size: 14px; font-weight: 600; padding: 8px 18px;
  border-radius: 999px; margin-bottom: 16px; letter-spacing: .5px;
}
.section-head h2 { font-size: 38px; line-height: 1.3; font-weight: 800; margin-bottom: 14px; letter-spacing: -.5px; }
.section-head p { color: var(--text-muted); font-size: 16px; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 600; cursor: pointer;
  transition: all var(--transition); white-space: nowrap;
  border: 2px solid transparent;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 8px 24px rgba(79, 110, 247, .28); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(79, 110, 247, .36); }
.btn-outline { background: transparent; border-color: var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.btn-light { background: #fff; color: var(--primary-dark); }
.btn-light:hover { background: var(--primary-light); transform: translateY(-2px); }
.btn-lg { padding: 16px 38px; font-size: 16px; border-radius: var(--radius-md); }
.btn-sm { padding: 9px 20px; font-size: 14px; border-radius: 8px; }
.btn .fa-arrow-right { transition: transform var(--transition); }
.btn:hover .fa-arrow-right { transform: translateX(4px); }

/* header */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  height: var(--header-h);
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(230, 233, 242, .8);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-icon {
  width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: #fff; font-size: 18px;
  box-shadow: 0 6px 16px rgba(79, 110, 247, .32);
}
.brand-text { font-size: 19px; font-weight: 800; letter-spacing: -.3px; color: var(--text); }
.main-nav { display: flex; align-items: center; gap: 6px; background: #f4f6fb; padding: 5px; border-radius: 999px; }
.main-nav .nav-link {
  padding: 8px 18px; border-radius: 999px; font-size: 14px; font-weight: 500;
  color: var(--text-muted); transition: all var(--transition);
}
.main-nav .nav-link:hover { color: var(--primary); background: rgba(79, 110, 247, .08); }
.main-nav .nav-link.active { color: var(--primary); background: #fff; font-weight: 600; box-shadow: 0 2px 10px rgba(30, 35, 64, .08); }
.nav-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.nav-search {
  display: flex; align-items: center; gap: 8px;
  background: #f4f6fb; border: 1px solid transparent;
  border-radius: 12px; padding: 9px 14px; width: 220px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79, 110, 247, .12); }
.nav-search i { color: var(--text-muted); font-size: 14px; }
.nav-search input { flex: 1; background: transparent; font-size: 14px; color: var(--text); min-width: 0; }
.nav-search input::placeholder { color: #a0a7b8; }
.nav-toggle {
  display: none; width: 42px; height: 42px; border-radius: 10px;
  background: var(--primary-light); color: var(--primary); font-size: 18px;
  cursor: pointer; align-items: center; justify-content: center; transition: background var(--transition);
}
.nav-toggle:hover { background: #dde3fd; }

/* hero banner */
.page-hero {
  position: relative; padding: 110px 0 100px;
  background-image: linear-gradient(135deg, rgba(20, 26, 60, .88) 0%, rgba(45, 60, 130, .72) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size: cover; background-position: center;
  color: #fff; text-align: center;
}
.page-hero::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 70% 30%, rgba(139, 92, 246, .25), transparent 60%);
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255, 255, 255, .14); border: 1px solid rgba(255, 255, 255, .22);
  color: #fff; font-size: 13px; font-weight: 600; padding: 8px 18px;
  border-radius: 999px; backdrop-filter: blur(8px); margin-bottom: 24px;
}
.page-hero h1 { font-size: 50px; font-weight: 800; line-height: 1.25; margin-bottom: 20px; letter-spacing: -1px; }
.page-hero p { max-width: 640px; margin: 0 auto 36px; font-size: 17px; color: rgba(255, 255, 255, .86); }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 42px; }
.hero-stats {
  display: flex; justify-content: center; gap: 12px; flex-wrap: wrap;
}
.hero-stats span {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .16);
  padding: 8px 16px; border-radius: 999px; font-size: 14px; font-weight: 500;
}

/* steps */
.steps-section { background: var(--bg); }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-card {
  position: relative; background: var(--surface); border-radius: var(--radius-lg);
  padding: 36px 28px 30px; box-shadow: var(--shadow-sm);
  border: 1px solid var(--border); overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.step-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.step-num {
  position: absolute; top: 18px; right: 22px;
  font-size: 52px; font-weight: 800; color: #f0f2fa; line-height: 1;
}
.step-icon {
  width: 54px; height: 54px; border-radius: 16px;
  display: grid; place-items: center; font-size: 22px;
  background: var(--primary-light); color: var(--primary);
  margin-bottom: 22px; transition: all var(--transition);
}
.step-card:hover .step-icon { background: var(--primary); color: #fff; transform: scale(1.05); }
.step-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 12px; position: relative; z-index: 1; }
.step-card p { font-size: 14px; color: var(--text-muted); position: relative; z-index: 1; }
.step-order { display: flex; align-items: center; gap: 8px; margin-top: 18px; font-size: 13px; color: var(--primary); font-weight: 600; }

/* methods */
.methods-section { background: var(--bg); }
.methods-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.method-card {
  background: var(--surface); border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border); box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex; flex-direction: column;
}
.method-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.method-cover { position: relative; aspect-ratio: 16 / 9; overflow: hidden; }
.method-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.method-card:hover .method-cover img { transform: scale(1.05); }
.method-cover::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(30, 35, 64, .28), transparent 55%);
}
.method-tag {
  position: absolute; left: 16px; bottom: 14px; z-index: 2;
  background: rgba(255, 255, 255, .95); color: var(--text);
  font-size: 12px; font-weight: 600; padding: 5px 14px; border-radius: 999px;
}
.method-body { padding: 26px 26px 28px; display: flex; flex-direction: column; flex: 1; }
.method-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 6px; }
.method-sub { font-size: 13px; color: var(--text-muted); margin-bottom: 16px; }
.method-features { display: flex; flex-direction: column; gap: 10px; margin-bottom: 22px; flex: 1; }
.method-features li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text); }
.method-features i { color: var(--success); font-size: 14px; margin-top: 4px; }
.method-link { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: var(--primary); }
.method-link:hover { color: var(--primary-dark); }
.method-link i { transition: transform var(--transition); }
.method-link:hover i { transform: translateX(4px); }

/* checklist */
.checklist-section { background: var(--surface); }
.checklist-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.checklist-info h2 { font-size: 34px; font-weight: 800; line-height: 1.35; margin-bottom: 16px; }
.checklist-info > p { color: var(--text-muted); margin-bottom: 30px; }
.check-list { display: grid; gap: 14px; margin-bottom: 30px; }
.check-list li {
  display: flex; align-items: flex-start; gap: 14px;
  background: var(--bg); border: 1px solid var(--border);
  padding: 16px 18px; border-radius: var(--radius-md);
  transition: background var(--transition), transform var(--transition);
}
.check-list li:hover { background: var(--primary-light); transform: translateX(4px); }
.check-list .check-icon {
  width: 24px; height: 24px; border-radius: 8px; flex-shrink: 0;
  background: rgba(22, 163, 74, .12); color: var(--success);
  display: grid; place-items: center; font-size: 12px; margin-top: 2px;
}
.check-list span { font-size: 15px; }
.checklist-visual { position: relative; }
.checklist-visual .visual-card {
  background: var(--surface); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}
.checklist-visual .visual-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.visual-float {
  position: absolute; bottom: -24px; left: 30px; right: 30px;
  background: var(--surface); border-radius: var(--radius-md);
  box-shadow: var(--shadow); padding: 16px 20px;
  border: 1px solid var(--border);
  display: flex; align-items: center; gap: 14px;
}
.visual-float .float-icon {
  width: 44px; height: 44px; border-radius: 12px; background: var(--accent-light);
  color: var(--accent); display: grid; place-items: center; font-size: 18px; flex-shrink: 0;
}
.visual-float strong { display: block; font-size: 14px; }
.visual-float p { font-size: 13px; color: var(--text-muted); }

/* stats */
.stats-section {
  background: linear-gradient(135deg, #1e2340 0%, #2b3460 100%);
  color: #fff; position: relative; overflow: hidden;
}
.stats-section::before {
  content: ""; position: absolute; width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(79, 110, 247, .35), transparent 70%);
  top: -160px; right: -100px; border-radius: 50%;
}
.stats-section::after {
  content: ""; position: absolute; width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(245, 158, 11, .2), transparent 70%);
  bottom: -120px; left: -80px; border-radius: 50%;
}
.stats-section .container { position: relative; z-index: 2; }
.stats-head { text-align: center; margin-bottom: 56px; }
.stats-head .section-tag { background: rgba(255, 255, 255, .12); color: #fff; }
.stats-head h2 { font-size: 38px; font-weight: 800; margin-bottom: 12px; }
.stats-head p { color: rgba(255, 255, 255, .7); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-bottom: 56px; }
.stat-item {
  text-align: center; background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .1); border-radius: var(--radius-lg);
  padding: 36px 20px; backdrop-filter: blur(8px);
  transition: background var(--transition), transform var(--transition);
}
.stat-item:hover { background: rgba(255, 255, 255, .1); transform: translateY(-4px); }
.stat-value { font-size: 44px; font-weight: 800; color: #fff; line-height: 1.2; }
.stat-value em { font-style: normal; color: var(--accent); }
.stat-label { font-size: 14px; color: rgba(255, 255, 255, .7); margin-top: 8px; }
.progress-dashboard { display: grid; grid-template-columns: 1fr; gap: 22px; max-width: 760px; margin: 0 auto; }
.progress-row { display: flex; align-items: center; gap: 16px; }
.progress-label { width: 150px; font-size: 14px; font-weight: 600; color: rgba(255, 255, 255, .9); flex-shrink: 0; }
.progress-track { flex: 1; height: 10px; background: rgba(255, 255, 255, .12); border-radius: 999px; overflow: hidden; }
.progress-fill {
  height: 100%; border-radius: 999px; width: 0;
  background: linear-gradient(90deg, var(--primary), #8b5cf6);
  transition: width .2s ease;
}
.progress-fill.accent { background: linear-gradient(90deg, var(--accent), #f97316); }
.progress-fill.green { background: linear-gradient(90deg, #22c55e, #10b981); }
.progress-percent { width: 52px; font-size: 14px; font-weight: 700; color: #fff; text-align: right; flex-shrink: 0; }

/* faq */
.faq-section { background: var(--bg); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-md); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: box-shadow var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow); }
.faq-item summary {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 22px 26px; cursor: pointer; list-style: none; font-weight: 600; font-size: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-icon {
  width: 32px; height: 32px; border-radius: 10px; flex-shrink: 0;
  background: var(--primary-light); color: var(--primary);
  display: grid; place-items: center; font-size: 14px;
  transition: transform var(--transition), background var(--transition), color var(--transition);
}
.faq-item[open] .faq-icon { background: var(--primary); color: #fff; transform: rotate(45deg); }
.faq-answer { padding: 0 26px 24px; color: var(--text-muted); font-size: 15px; }
.faq-answer p { max-width: 92%; }

/* cta */
.cta-section { position: relative; padding: 0; }
.cta-box {
  background: linear-gradient(135deg, var(--primary) 0%, #6d5cf6 50%, #8b5cf6 100%);
  border-radius: 28px; padding: 64px 56px; text-align: center;
  color: #fff; overflow: hidden; position: relative; margin: 48px 0 -48px;
  box-shadow: 0 24px 60px rgba(79, 110, 247, .35);
}
.cta-box::before {
  content: ""; position: absolute; width: 300px; height: 300px;
  background: rgba(255, 255, 255, .08); border-radius: 50%; top: -140px; right: -80px;
}
.cta-box::after {
  content: ""; position: absolute; width: 200px; height: 200px;
  background: rgba(255, 255, 255, .06); border-radius: 50%; bottom: -100px; left: -60px;
}
.cta-box h2 { font-size: 36px; font-weight: 800; margin-bottom: 14px; position: relative; z-index: 2; }
.cta-box p { color: rgba(255, 255, 255, .85); margin-bottom: 32px; position: relative; z-index: 2; }
.cta-actions { display: flex; gap: 16px; justify-content: center; position: relative; z-index: 2; }

/* footer */
.site-footer { background: #151a30; color: rgba(255, 255, 255, .72); padding: 72px 0 0; margin-top: 100px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer-brand { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 800; color: #fff; margin-bottom: 16px; }
.footer-brand .logo-icon {
  width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary), #8b5cf6); color: #fff; font-size: 16px;
}
.footer-col p { font-size: 14px; line-height: 1.8; max-width: 340px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 18px; }
.footer-col a { display: block; font-size: 14px; padding: 6px 0; color: rgba(255, 255, 255, .65); transition: color var(--transition), padding-left var(--transition); }
.footer-col a:hover { color: #fff; padding-left: 6px; }
.footer-col a i { margin-right: 8px; font-size: 13px; color: var(--primary); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .08); padding: 22px 0; text-align: center; font-size: 14px; }
.footer-bottom a { color: var(--primary); font-weight: 600; }
.footer-bottom a:hover { color: #8b5cf6; }

/* responsive */
@media (max-width: 1024px) {
  .nav-toggle { display: flex; }
  .nav-search { display: none; }
  .main-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: stretch;
    padding: 16px 20px 24px; border-radius: 0;
    box-shadow: 0 16px 40px rgba(30, 35, 64, .12);
    transform: translateY(-160%); opacity: 0; pointer-events: none;
    transition: transform .3s ease, opacity .3s ease;
    border-bottom: 1px solid var(--border);
  }
  .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .main-nav .nav-link { padding: 14px 16px; border-radius: 12px; font-size: 15px; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .methods-grid { grid-template-columns: repeat(2, 1fr); }
  .checklist-wrap { grid-template-columns: 1fr; gap: 56px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .page-hero { padding: 90px 0 80px; }
  .page-hero h1 { font-size: 38px; }
  .cta-box { padding: 48px 32px; }
}
@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .section-head h2 { font-size: 30px; }
  .brand-text { font-size: 16px; }
  .brand-icon { width: 36px; height: 36px; font-size: 16px; }
  .header-inner { gap: 12px; }
  .page-hero h1 { font-size: 30px; }
  .page-hero p { font-size: 15px; }
  .hero-stats span { font-size: 13px; }
  .steps-grid, .methods-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .visual-float { position: static; margin-top: -1px; }
  .cta-box { padding: 40px 24px; }
  .cta-box h2 { font-size: 28px; }
  .cta-actions { flex-direction: column; }
  .btn { width: 100%; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
  .progress-row { flex-direction: column; align-items: flex-start; gap: 8px; }
  .progress-label { width: auto; }
  .progress-percent { text-align: left; }
  .check-list span { font-size: 14px; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .page-hero { padding: 72px 0 64px; }
  .page-hero h1 { font-size: 26px; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-value { font-size: 38px; }
  .method-body { padding: 22px 20px 24px; }
  .faq-item summary { padding: 18px 18px; font-size: 15px; }
  .faq-answer { padding: 0 18px 20px; font-size: 14px; }
  .cta-box { border-radius: 20px; margin: 32px 0 -28px; }
  .footer-col a { font-size: 13px; }
}

/* roulang page: article */
:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --primary-light: #eef2ff;
  --secondary: #8b5cf6;
  --accent: #f59e0b;
  --bg: #f8fafc;
  --bg-white: #ffffff;
  --bg-dark: #0f172a;
  --text: #1e293b;
  --text-light: #64748b;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.13);
  --transition: all 0.25s ease;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); background: var(--bg); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible {
  outline: 3px solid rgba(79, 70, 229, 0.35);
  outline-offset: 2px;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-alt { background: var(--bg-white); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.925rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 22px rgba(79, 70, 229, 0.4); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 6px rgba(79, 70, 229, 0.3); }
.btn-outline { border-color: var(--border); background: var(--bg-white); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-outline:active { transform: translateY(0); }
.btn-sm { padding: 8px 18px; font-size: 0.85rem; }
.btn-lg { padding: 16px 38px; font-size: 1.05rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 74px; }
.brand-logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.12rem; color: var(--text); white-space: nowrap; letter-spacing: -0.01em; }
.brand-logo:hover { color: var(--primary); }
.logo-icon {
  width: 40px; height: 40px; border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 1.05rem; box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
}
.main-nav { display: flex; align-items: center; gap: 4px; flex: 1; justify-content: center; }
.nav-link {
  padding: 8px 16px; border-radius: 999px; font-size: 0.925rem;
  font-weight: 600; color: var(--text-light); transition: var(--transition);
  white-space: nowrap;
}
.nav-link:hover { background: var(--primary-light); color: var(--primary); }
.nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 3px 10px rgba(79, 70, 229, 0.3); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.command-search {
  display: flex; align-items: center; gap: 8px;
  background: var(--border-light); border: 1px solid var(--border);
  border-radius: 999px; padding: 8px 14px; width: 220px; transition: var(--transition);
}
.command-search:hover { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1); }
.command-search input { border: none; background: transparent; outline: none; font-size: 0.85rem; flex: 1; color: var(--text); }
.command-search input::placeholder { color: var(--text-muted); }
.command-search .search-ico { color: var(--text-muted); font-size: 0.85rem; }
.kbd {
  font-size: 0.68rem; background: var(--bg-white); border: 1px solid var(--border);
  border-radius: 4px; padding: 1px 6px; color: var(--text-muted); white-space: nowrap;
}
.header-cta { box-shadow: none; }
.nav-toggle {
  display: none; background: var(--primary-light); border: none; width: 42px; height: 42px;
  border-radius: 10px; font-size: 1rem; color: var(--primary); cursor: pointer;
  align-items: center; justify-content: center; transition: var(--transition);
}
.nav-toggle:hover { background: var(--primary); color: #fff; }

.article-hero {
  position: relative;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  padding: 76px 0 68px;
  color: #fff;
}
.article-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(120deg, rgba(15, 23, 42, 0.92), rgba(79, 70, 229, 0.78), rgba(139, 92, 246, 0.65));
}
.article-hero .container { position: relative; z-index: 2; }
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 0.85rem; color: rgba(255, 255, 255, 0.85); margin-bottom: 22px; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { opacity: 0.5; }
.breadcrumb .current { color: rgba(255, 255, 255, 0.7); }
.article-hero h1 {
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  font-weight: 800; line-height: 1.35; max-width: 880px; margin-bottom: 20px;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
}
.article-meta { display: flex; flex-wrap: wrap; gap: 20px; font-size: 0.9rem; color: rgba(255, 255, 255, 0.92); }
.article-meta span { display: inline-flex; align-items: center; gap: 7px; }
.article-meta .meta-tag {
  background: rgba(255, 255, 255, 0.16); border: 1px solid rgba(255, 255, 255, 0.22);
  padding: 3px 12px; border-radius: 999px; font-size: 0.82rem; font-weight: 600;
}

.article-main { padding: 60px 0 70px; }
.article-card {
  background: var(--bg-white); border-radius: var(--radius-lg);
  padding: 48px 52px; box-shadow: var(--shadow); border: 1px solid var(--border-light);
}
.article-body { font-size: 1.02rem; line-height: 2; color: var(--text); }
.article-body h2, .article-body h3, .article-body h4 {
  margin-top: 38px; margin-bottom: 18px; font-weight: 800; color: var(--text); line-height: 1.4;
}
.article-body h2 { font-size: 1.55rem; padding-bottom: 12px; border-bottom: 2px solid var(--border-light); }
.article-body h3 { font-size: 1.25rem; }
.article-body p { margin-bottom: 20px; }
.article-body a { color: var(--primary); font-weight: 600; border-bottom: 1px solid var(--primary-light); }
.article-body a:hover { color: var(--primary-dark); border-bottom-color: var(--primary); }
.article-body img { border-radius: var(--radius); margin: 28px 0; box-shadow: var(--shadow-sm); }
.article-body ul, .article-body ol { margin: 0 0 20px 24px; }
.article-body li { margin-bottom: 8px; }
.article-body blockquote {
  border-left: 4px solid var(--primary); padding: 18px 24px;
  background: var(--primary-light); border-radius: 0 var(--radius) var(--radius) 0;
  font-style: normal; margin: 28px 0; color: var(--text);
}
.article-body code { background: var(--border-light); padding: 2px 8px; border-radius: 6px; font-size: 0.9em; }
.article-body table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.article-body th, .article-body td { border: 1px solid var(--border); padding: 12px 16px; text-align: left; }
.article-body th { background: var(--primary-light); font-weight: 700; }
.not-found { text-align: center; padding: 60px 20px; }
.not-found-icon {
  width: 72px; height: 72px; border-radius: 50%;
  background: var(--primary-light); color: var(--primary); display: flex;
  align-items: center; justify-content: center; font-size: 1.8rem; margin: 0 auto 20px;
}
.not-found h2 { font-size: 1.5rem; font-weight: 800; margin-bottom: 10px; }
.not-found p { color: var(--text-light); margin-bottom: 24px; }
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; padding-top: 22px; border-top: 1px solid var(--border-light); }
.tag {
  background: var(--primary-light); color: var(--primary); font-size: 0.82rem;
  font-weight: 600; padding: 5px 14px; border-radius: 999px; display: inline-flex;
  align-items: center; gap: 6px; transition: var(--transition);
}
.tag:hover { background: var(--primary); color: #fff; }

.sidebar { display: flex; flex-direction: column; gap: 22px; position: sticky; top: 94px; }
.sidebar-card {
  background: var(--bg-white); border-radius: var(--radius); padding: 26px 26px;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); transition: var(--transition);
}
.sidebar-card:hover { box-shadow: var(--shadow); }
.sidebar-card h3 {
  font-size: 1.02rem; font-weight: 800; margin-bottom: 16px; padding-bottom: 12px;
  border-bottom: 2px solid var(--primary-light); color: var(--text);
  display: flex; align-items: center; gap: 8px;
}
.sidebar-card h3 i { color: var(--primary); }
.info-list li {
  display: flex; justify-content: space-between; align-items: center;
  padding: 9px 0; border-bottom: 1px solid var(--border-light); font-size: 0.88rem;
}
.info-list li:last-child { border-bottom: none; }
.info-list li span { color: var(--text-muted); }
.info-list li em { font-style: normal; font-weight: 600; color: var(--text); }
.side-post { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border-light); }
.side-post:last-child { border-bottom: none; }
.side-post img { width: 68px; height: 50px; object-fit: cover; border-radius: 8px; flex-shrink: 0; }
.side-post a { font-size: 0.85rem; font-weight: 600; line-height: 1.45; color: var(--text); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.side-post a:hover { color: var(--primary); }
.register-card {
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover; background-position: center; position: relative;
  color: #fff; border: none; overflow: hidden;
}
.register-card::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(79, 70, 229, 0.88), rgba(15, 23, 42, 0.8)); }
.register-card h3, .register-card p, .register-card .btn { position: relative; z-index: 2; }
.register-card h3 { color: #fff; border-bottom-color: rgba(255, 255, 255, 0.25); }
.register-card p { font-size: 0.88rem; color: rgba(255, 255, 255, 0.85); margin-bottom: 18px; line-height: 1.6; }
.register-card .btn { background: #fff; color: var(--primary); box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2); }
.register-card .btn:hover { background: var(--primary-light); color: var(--primary); transform: translateY(-2px); }

.related-section { background: var(--bg-white); padding: 70px 0 80px; }
.section-header { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-header h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: 10px; letter-spacing: -0.02em; }
.section-header p { color: var(--text-light); font-size: 1.02rem; }
.section-header .header-bar { width: 56px; height: 4px; background: linear-gradient(90deg, var(--primary), var(--secondary)); border-radius: 4px; margin: 16px auto 0; }
.related-card {
  background: var(--bg-white); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border-light); box-shadow: var(--shadow-sm);
  transition: var(--transition); display: flex; flex-direction: column; height: 100%;
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.related-card img { width: 100%; height: 180px; object-fit: cover; }
.related-card-body { padding: 22px; flex: 1; display: flex; flex-direction: column; gap: 10px; }
.related-card-body h3 { font-size: 1rem; font-weight: 700; line-height: 1.5; }
.related-card-body h3 a:hover { color: var(--primary); }
.related-card-meta { font-size: 0.8rem; color: var(--text-muted); display: flex; gap: 14px; align-items: center; margin-top: auto; }
.related-card-meta i { margin-right: 4px; }
.related-empty { text-align: center; color: var(--text-muted); padding: 40px 0; }

.faq-section { padding: 80px 0; }
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
  background: var(--bg-white); border-radius: var(--radius); margin-bottom: 16px;
  border: 1px solid var(--border-light); box-shadow: var(--shadow-sm); overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow); }
.faq-item summary {
  list-style: none; cursor: pointer; padding: 22px 28px;
  font-weight: 700; font-size: 0.96rem; display: flex; align-items: center;
  justify-content: space-between; gap: 16px; color: var(--text); transition: var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+'; font-size: 1.45rem; color: var(--primary); font-weight: 400;
  transition: transform 0.3s ease; flex-shrink: 0; line-height: 1;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item[open] summary { color: var(--primary); }
.faq-content { padding: 0 28px 22px; color: var(--text-light); font-size: 0.92rem; line-height: 1.8; border-top: 1px solid var(--border-light); padding-top: 16px; }

.cta-section { background: var(--bg-dark); color: #fff; padding: 80px 0; position: relative; overflow: hidden; text-align: center; }
.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(79, 70, 229, 0.45), transparent 60%),
    radial-gradient(circle at 80% 50%, rgba(139, 92, 246, 0.35), transparent 60%);
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: 14px; }
.cta-section p { font-size: 1.02rem; color: rgba(255, 255, 255, 0.8); max-width: 600px; margin: 0 auto 32px; }
.cta-section .btn-primary { background: #fff; color: var(--primary); box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25); }
.cta-section .btn-primary:hover { background: var(--primary-light); color: var(--primary); transform: translateY(-2px); }
.cta-section .btn-outline { border-color: rgba(255, 255, 255, 0.35); color: #fff; background: transparent; }
.cta-section .btn-outline:hover { border-color: #fff; color: #fff; background: rgba(255, 255, 255, 0.08); }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.site-footer { background: #0f172a; color: #94a3b8; padding: 64px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.footer-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 800; font-size: 1.1rem; margin-bottom: 14px; }
.footer-brand .logo-icon { background: linear-gradient(135deg, var(--primary), var(--secondary)); width: 36px; height: 36px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 0.95rem; }
.footer-col h4 { color: #fff; font-size: 0.98rem; margin-bottom: 16px; font-weight: 700; }
.footer-col a { display: block; color: #94a3b8; font-size: 0.9rem; padding: 6px 0; }
.footer-col a:hover { color: #fff; transform: translateX(3px); }
.footer-col p { font-size: 0.88rem; line-height: 1.7; margin-top: 6px; }
.footer-bottom { padding-top: 24px; text-align: center; font-size: 0.84rem; color: #64748b; }
.footer-bottom a { color: #94a3b8; }
.footer-bottom a:hover { color: #fff; }

@media (max-width: 1024px) {
  .command-search { width: 180px; }
  .header-cta { display: none; }
  .related-cards .cell { margin-bottom: 24px; }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .header-inner { height: auto; padding: 12px 0; flex-wrap: wrap; }
  .main-nav {
    display: none; flex-basis: 100%; order: 3; flex-direction: column;
    align-items: stretch; padding-top: 14px; gap: 4px;
  }
  .main-nav.open { display: flex; }
  .nav-link { border-radius: 10px; text-align: center; padding: 11px 16px; }
  .command-search { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-cta { display: inline-flex; }
  .article-hero { padding: 52px 0 46px; }
  .article-card { padding: 28px 24px; border-radius: var(--radius); }
  .article-body { font-size: 0.97rem; line-height: 1.9; }
  .article-body h2 { font-size: 1.3rem; }
  .article-body h3 { font-size: 1.1rem; }
  .sidebar { position: static; margin-top: 32px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-btns { flex-direction: column; align-items: center; }
  .faq-item summary { padding: 18px 20px; font-size: 0.9rem; }
  .faq-content { padding: 0 20px 18px; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .brand-logo { font-size: 0.95rem; }
  .logo-icon { width: 34px; height: 34px; font-size: 0.9rem; }
  .article-hero h1 { font-size: 1.35rem; }
  .article-meta { gap: 12px; font-size: 0.82rem; }
  .article-card { padding: 20px 16px; }
  .article-body img { border-radius: var(--radius-sm); }
  .related-card img { height: 160px; }
  .cta-section { padding: 56px 0; }
}

/* roulang page: category2 */
/* ========== 设计变量 ========== */
    :root {
      --primary: #2563eb;
      --primary-dark: #1e40af;
      --primary-light: #dbeafe;
      --accent: #f59e0b;
      --accent-light: #fef3c7;
      --dark: #0f172a;
      --text: #1e293b;
      --text-light: #64748b;
      --bg: #f8fafc;
      --bg-white: #ffffff;
      --border: #e2e8f0;
      --radius-sm: 8px;
      --radius: 14px;
      --radius-lg: 22px;
      --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
      --shadow: 0 10px 35px rgba(0, 0, 0, 0.08);
      --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.12);
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
      --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

    /* ========== 基础 Reset ========== */
    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font);
      font-size: 16px;
      line-height: 1.7;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    a:hover {
      color: var(--primary);
    }
    img {
      max-width: 100%;
      display: block;
      height: auto;
    }
    button,
    input,
    select,
    textarea {
      font-family: inherit;
      font-size: inherit;
      border: none;
      outline: none;
      background: none;
    }
    ul,
    ol {
      list-style: none;
    }
    h1, h2, h3, h4, h5, h6 {
      line-height: 1.3;
      color: var(--dark);
      font-weight: 700;
    }
    :focus-visible {
      outline: 3px solid rgba(37, 99, 235, 0.35);
      outline-offset: 2px;
      border-radius: 4px;
    }

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

    /* ========== 导航 ========== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border);
      box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      min-height: 72px;
      position: relative;
    }
    .site-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 18px;
      font-weight: 800;
      color: var(--dark);
      white-space: nowrap;
    }
    .site-logo .logo-icon {
      width: 38px;
      height: 38px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--primary), #06b6d4);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 17px;
      box-shadow: 0 6px 18px rgba(37, 99, 235, 0.3);
    }
    .site-logo:hover {
      color: var(--dark);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 6px;
      margin-left: 12px;
    }
    .main-nav .nav-link {
      padding: 10px 18px;
      border-radius: 100px;
      font-size: 14.5px;
      font-weight: 500;
      color: var(--text-light);
      transition: var(--transition);
      position: relative;
    }
    .main-nav .nav-link:hover {
      color: var(--primary);
      background: var(--primary-light);
    }
    .main-nav .nav-link.active {
      color: var(--primary-dark);
      background: var(--primary-light);
      font-weight: 700;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .command-search {
      display: flex;
      align-items: center;
      gap: 8px;
      background: #f1f5f9;
      border: 1px solid var(--border);
      border-radius: 100px;
      padding: 8px 16px;
      min-width: 220px;
      transition: var(--transition);
    }
    .command-search:focus-within {
      border-color: var(--primary);
      background: #fff;
      box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
    }
    .command-search i {
      color: var(--text-light);
      font-size: 13px;
    }
    .command-search input {
      flex: 1;
      font-size: 13.5px;
      color: var(--text);
      background: transparent;
      border: none;
    }
    .command-search input::placeholder {
      color: #94a3b8;
    }
    .search-kbd {
      font-size: 11px;
      color: var(--text-light);
      background: #e2e8f0;
      border-radius: 5px;
      padding: 2px 7px;
      font-weight: 600;
      letter-spacing: 0.5px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border-radius: 100px;
      font-weight: 600;
      font-size: 14px;
      padding: 12px 28px;
      transition: var(--transition);
      cursor: pointer;
      border: 2px solid transparent;
      white-space: nowrap;
    }
    .btn-sm {
      padding: 9px 20px;
      font-size: 13.5px;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 10px 26px rgba(37, 99, 235, 0.4);
    }
    .btn-primary:active {
      transform: translateY(0);
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    }
    .btn-outline {
      background: transparent;
      color: #fff;
      border-color: rgba(255, 255, 255, 0.7);
      backdrop-filter: blur(4px);
    }
    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.15);
      color: #fff;
      border-color: #fff;
      transform: translateY(-2px);
    }
    .btn-outline-dark {
      background: transparent;
      color: var(--primary);
      border-color: var(--primary);
    }
    .btn-outline-dark:hover {
      background: var(--primary-light);
      color: var(--primary-dark);
    }
    .btn-accent {
      background: var(--accent);
      color: #1e293b;
      box-shadow: 0 6px 20px rgba(245, 158, 11, 0.35);
    }
    .btn-accent:hover {
      background: #d97706;
      color: #fff;
      transform: translateY(-2px);
    }
    .mobile-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      padding: 10px;
      border-radius: 10px;
      cursor: pointer;
      background: #f1f5f9;
    }
    .mobile-toggle span {
      width: 20px;
      height: 2px;
      background: var(--dark);
      border-radius: 2px;
      transition: var(--transition);
    }
    .mobile-toggle:hover span:nth-child(2) {
      width: 14px;
    }

    /* ========== 页面 Hero ========== */
    .page-hero {
      position: relative;
      background-size: cover;
      background-position: center;
      padding: 110px 0 90px;
      color: #fff;
    }
    .page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(120deg, rgba(15, 23, 42, 0.88), rgba(37, 99, 235, 0.55), rgba(13, 148, 136, 0.4));
    }
    .page-hero .container {
      position: relative;
      z-index: 2;
    }
    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13.5px;
      color: rgba(255, 255, 255, 0.8);
      margin-bottom: 18px;
      flex-wrap: wrap;
    }
    .breadcrumb a {
      color: rgba(255, 255, 255, 0.85);
      font-weight: 500;
    }
    .breadcrumb a:hover {
      color: #fff;
    }
    .breadcrumb .sep {
      opacity: 0.6;
    }
    .page-hero h1 {
      font-size: 44px;
      font-weight: 800;
      color: #fff;
      max-width: 760px;
      line-height: 1.25;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .page-hero p.lead {
      font-size: 18px;
      line-height: 1.7;
      color: rgba(255, 255, 255, 0.92);
      max-width: 680px;
      margin-bottom: 30px;
    }
    .hero-actions {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
    }

    /* ========== 通用板块 ========== */
    .section {
      padding: 90px 0;
    }
    .section-alt {
      background: var(--bg-white);
    }
    .section-head {
      text-align: center;
      max-width: 680px;
      margin: 0 auto 50px;
    }
    .section-tag {
      display: inline-block;
      background: var(--primary-light);
      color: var(--primary-dark);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 1px;
      padding: 6px 20px;
      border-radius: 100px;
      margin-bottom: 14px;
    }
    .section-head h2 {
      font-size: 36px;
      margin-bottom: 12px;
      letter-spacing: -0.5px;
    }
    .section-head p {
      font-size: 16px;
      color: var(--text-light);
    }

    /* ========== 覆盖范围卡片 ========== */
    .coverage-card {
      height: 100%;
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      padding: 38px 30px;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
      position: relative;
      overflow: hidden;
    }
    .coverage-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, var(--primary), #06b6d4);
      opacity: 0;
      transition: var(--transition);
    }
    .coverage-card:hover {
      transform: translateY(-8px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(37, 99, 235, 0.3);
    }
    .coverage-card:hover::before {
      opacity: 1;
    }
    .coverage-icon {
      width: 54px;
      height: 54px;
      border-radius: 16px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 20px;
      transition: var(--transition);
    }
    .coverage-card:hover .coverage-icon {
      background: var(--primary);
      color: #fff;
      transform: rotate(-6deg) scale(1.05);
    }
    .coverage-card h3 {
      font-size: 19px;
      margin-bottom: 10px;
    }
    .coverage-card p {
      font-size: 14.5px;
      color: var(--text-light);
      line-height: 1.7;
    }

    /* ========== 安全流程时间线 ========== */
    .process-section {
      background: var(--bg-white);
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .process-steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 20px;
      counter-reset: step;
    }
    .step-item {
      position: relative;
      padding: 32px 24px;
      background: var(--bg);
      border-radius: var(--radius);
      border: 1px solid transparent;
      transition: var(--transition);
      text-align: center;
    }
    .step-item:hover {
      border-color: var(--primary);
      background: #fff;
      box-shadow: var(--shadow);
      transform: translateY(-4px);
    }
    .step-number {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary);
      opacity: 0.25;
      line-height: 1;
      margin-bottom: 12px;
      display: block;
    }
    .step-item h3 {
      font-size: 16.5px;
      margin-bottom: 8px;
    }
    .step-item p {
      font-size: 13px;
      color: var(--text-light);
      line-height: 1.6;
    }
    .step-item::after {
      content: "→";
      position: absolute;
      top: 50%;
      right: -16px;
      transform: translateY(-50%);
      color: var(--primary);
      font-weight: 700;
      font-size: 18px;
      opacity: 0.4;
      z-index: 2;
    }
    .step-item:last-child::after {
      display: none;
    }

    /* ========== 内容 / 资讯列表 ========== */
    .content-list-section {
      background: var(--bg);
    }
    .content-card {
      height: 100%;
      background: #fff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      overflow: hidden;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .content-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(37, 99, 235, 0.25);
    }
    .content-card-cover {
      position: relative;
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: var(--primary-light);
    }
    .content-card-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .content-card:hover .content-card-cover img {
      transform: scale(1.07);
    }
    .content-card-tag {
      position: absolute;
      top: 16px;
      left: 16px;
      background: rgba(15, 23, 42, 0.75);
      backdrop-filter: blur(6px);
      color: #fff;
      font-size: 12px;
      font-weight: 600;
      padding: 5px 14px;
      border-radius: 100px;
    }
    .content-card-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .content-card-body h3 {
      font-size: 17.5px;
      margin-bottom: 10px;
      line-height: 1.5;
    }
    .content-card-body p {
      font-size: 14px;
      color: var(--text-light);
      line-height: 1.65;
      flex: 1;
      margin-bottom: 18px;
    }
    .content-card-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: var(--text-light);
    }
    .content-card-meta .read-more {
      color: var(--primary);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .content-card-meta .read-more:hover {
      gap: 10px;
      color: var(--primary-dark);
    }

    /* ========== 数据统计 ========== */
    .stats-section {
      background: linear-gradient(135deg, var(--dark) 0%, #1e2a4a 100%);
      position: relative;
      overflow: hidden;
    }
    .stats-section::before {
      content: "";
      position: absolute;
      width: 400px;
      height: 400px;
      border-radius: 50%;
      background: rgba(37, 99, 235, 0.15);
      filter: blur(80px);
      top: -100px;
      right: -50px;
    }
    .stats-section .section-tag {
      background: rgba(255, 255, 255, 0.12);
      color: #93c5fd;
    }
    .stats-section .section-head h2 {
      color: #fff;
    }
    .stats-section .section-head p {
      color: rgba(255, 255, 255, 0.7);
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      position: relative;
      z-index: 2;
    }
    .stat-item {
      text-align: center;
      padding: 40px 20px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      backdrop-filter: blur(8px);
      transition: var(--transition);
    }
    .stat-item:hover {
      background: rgba(255, 255, 255, 0.1);
      transform: translateY(-4px);
      border-color: rgba(147, 197, 253, 0.3);
    }
    .stat-num {
      font-size: 42px;
      font-weight: 800;
      color: #60a5fa;
      line-height: 1.2;
      margin-bottom: 6px;
    }
    .stat-label {
      font-size: 15px;
      color: rgba(255, 255, 255, 0.85);
    }

    /* ========== FAQ 手风琴 ========== */
    .faq-section {
      background: var(--bg-white);
    }
    .faq-wrap {
      max-width: 840px;
      margin: 0 auto;
    }
    .accordion {
      background: transparent;
      border: none;
      border-radius: var(--radius);
    }
    .accordion-item {
      background: var(--bg);
      border-radius: var(--radius) !important;
      margin-bottom: 14px;
      border: 1px solid var(--border) !important;
      overflow: hidden;
      transition: var(--transition);
    }
    .accordion-item.is-active {
      border-color: rgba(37, 99, 235, 0.4) !important;
      background: #fff;
      box-shadow: var(--shadow-sm);
    }
    .accordion-title {
      background: transparent;
      border: none;
      padding: 22px 28px;
      font-size: 16.5px;
      font-weight: 600;
      color: var(--dark) !important;
      display: flex;
      align-items: center;
      gap: 12px;
      position: relative;
      transition: var(--transition);
    }
    .accordion-title::before {
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      content: "\f059";
      color: var(--primary);
      font-size: 18px;
      width: 24px;
      text-align: center;
    }
    .accordion-title:hover,
    .accordion-title:focus {
      background: rgba(37, 99, 235, 0.04);
    }
    .accordion-title::after {
      content: "\f078" !important;
      font-family: "Font Awesome 6 Free" !important;
      font-weight: 900 !important;
      position: absolute;
      right: 24px;
      top: 50%;
      transform: translateY(-50%);
      font-size: 14px;
      color: var(--text-light);
      transition: var(--transition);
    }
    .accordion-item.is-active .accordion-title::after {
      transform: translateY(-50%) rotate(180deg);
      color: var(--primary);
    }
    .accordion-content {
      background: transparent;
      border: none;
      padding: 0 28px 22px;
      font-size: 15px;
      color: var(--text);
      line-height: 1.8;
    }
    .accordion-content p {
      padding-left: 36px;
      position: relative;
    }
    .accordion-content p::before {
      content: "";
      position: absolute;
      left: 0;
      top: 10px;
      bottom: 10px;
      width: 3px;
      border-radius: 3px;
      background: var(--primary-light);
    }

    /* ========== CTA 区块 ========== */
    .cta-section {
      background: var(--bg);
    }
    .cta-box {
      background: linear-gradient(135deg, var(--primary), #06b6d4);
      border-radius: var(--radius-lg);
      padding: 60px 50px;
      text-align: center;
      color: #fff;
      position: relative;
      overflow: hidden;
      box-shadow: 0 20px 60px rgba(37, 99, 235, 0.35);
    }
    .cta-box::before {
      content: "";
      position: absolute;
      width: 300px;
      height: 300px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.1);
      top: -100px;
      left: -100px;
    }
    .cta-box::after {
      content: "";
      position: absolute;
      width: 200px;
      height: 200px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.08);
      bottom: -80px;
      right: -50px;
    }
    .cta-box h2 {
      color: #fff;
      font-size: 34px;
      margin-bottom: 12px;
      position: relative;
      z-index: 2;
    }
    .cta-box p {
      color: rgba(255, 255, 255, 0.9);
      max-width: 560px;
      margin: 0 auto 30px;
      font-size: 16px;
      position: relative;
      z-index: 2;
    }
    .cta-actions {
      display: flex;
      gap: 14px;
      justify-content: center;
      flex-wrap: wrap;
      position: relative;
      z-index: 2;
    }
    .cta-actions .btn-white {
      background: #fff;
      color: var(--primary);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    }
    .cta-actions .btn-white:hover {
      background: #f1f5f9;
      transform: translateY(-2px);
    }
    .cta-actions .btn-ghost {
      background: rgba(255, 255, 255, 0.15);
      color: #fff;
      border: 2px solid rgba(255, 255, 255, 0.5);
    }
    .cta-actions .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.25);
      border-color: #fff;
      transform: translateY(-2px);
    }

    /* ========== 页脚 ========== */
    .site-footer {
      background: #0f172a;
      color: rgba(255, 255, 255, 0.7);
      padding: 70px 0 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 19px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-brand .logo-icon {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--primary), #06b6d4);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 18px;
    }
    .footer-brand:hover {
      color: #fff;
    }
    .footer-col p {
      font-size: 14px;
      line-height: 1.8;
      max-width: 360px;
    }
    .footer-col h4 {
      color: #fff;
      font-size: 16px;
      margin-bottom: 18px;
    }
    .footer-col a {
      display: block;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.6);
      padding: 6px 0;
      transition: var(--transition);
    }
    .footer-col a:hover {
      color: #60a5fa;
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 13.5px;
    }
    .footer-bottom a {
      color: rgba(255, 255, 255, 0.8);
      font-weight: 600;
    }
    .footer-bottom a:hover {
      color: #60a5fa;
    }

    /* ========== 响应式断点 ========== */
    @media (max-width: 1024px) {
      .command-search {
        display: none;
      }
      .process-steps {
        grid-template-columns: repeat(3, 1fr);
      }
      .step-item::after {
        content: "";
        display: none;
      }
      .header-inner {
        flex-wrap: wrap;
        padding-top: 12px;
        padding-bottom: 12px;
      }
      .menu-open .main-nav,
      .menu-open .nav-actions {
        display: flex;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 12px 0 4px;
      }
      .main-nav,
      .nav-actions {
        display: none;
      }
      .main-nav .nav-link {
        border-radius: 10px;
        padding: 12px 16px;
      }
      .nav-actions .btn {
        width: 100%;
        margin-top: 8px;
      }
      .mobile-toggle {
        display: flex;
      }
    }
    @media (max-width: 768px) {
      .section {
        padding: 70px 0;
      }
      .page-hero {
        padding: 80px 0 60px;
      }
      .page-hero h1 {
        font-size: 32px;
      }
      .page-hero p.lead {
        font-size: 16px;
      }
      .section-head h2 {
        font-size: 28px;
      }
      .process-steps {
        grid-template-columns: 1fr 1fr;
      }
      .stats-grid {
        grid-template-columns: 1fr 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .cta-box {
        padding: 40px 24px;
      }
      .cta-box h2 {
        font-size: 27px;
      }
    }
    @media (max-width: 520px) {
      .container {
        padding: 0 18px;
      }
      .site-logo {
        font-size: 15px;
      }
      .site-logo .logo-icon {
        width: 34px;
        height: 34px;
        font-size: 15px;
      }
      .page-hero h1 {
        font-size: 26px;
      }
      .page-hero .btn {
        width: 100%;
        justify-content: center;
      }
      .hero-actions {
        flex-direction: column;
      }
      .process-steps {
        grid-template-columns: 1fr;
      }
      .stats-grid {
        grid-template-columns: 1fr;
      }
      .step-item::after {
        content: "↓";
        position: static;
        display: block;
        margin-top: 12px;
        transform: none;
      }
      .content-card-body h3 {
        font-size: 16px;
      }
      .accordion-title {
        font-size: 15px;
        padding: 18px 20px;
        padding-right: 48px;
      }
      .accordion-title::after {
        right: 18px;
      }
      .accordion-content {
        padding: 0 20px 18px;
        font-size: 14px;
      }
      .cta-section .btn {
        width: 100%;
        justify-content: center;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }