/* roulang page: index */
:root {
  --brand-50: #eef2ff;
  --brand-100: #e0e7ff;
  --brand-500: #6366f1;
  --brand-600: #4f46e5;
  --brand-700: #4338ca;
  --brand-800: #3730a3;
  --brand-900: #312e81;
  --accent-400: #fbbf24;
  --accent-500: #f59e0b;
  --accent-600: #d97706;
  --bg-main: #f8fafc;
  --bg-dark: #0f172a;
  --text-main: #1e293b;
  --text-weak: #64748b;
  --border-soft: #e2e8f0;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --shadow-card: 0 4px 24px rgba(15, 23, 42, 0.06);
  --shadow-hover: 0 12px 36px rgba(79, 70, 229, 0.16);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif; background: var(--bg-main); color: var(--text-main); line-height: 1.7; font-size: 16px; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section-label { display: inline-flex; align-items: center; gap: 8px; background: var(--brand-50); color: var(--brand-700); padding: 6px 16px; border-radius: 999px; font-size: 14px; font-weight: 600; letter-spacing: 0.02em; }
.section-title { font-size: 36px; font-weight: 800; line-height: 1.25; color: var(--bg-dark); margin-top: 16px; letter-spacing: -0.02em; }
.section-desc { font-size: 16px; color: var(--text-weak); max-width: 640px; margin-top: 12px; line-height: 1.8; }

/* ===== Header / Nav ===== */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(255,255,255,0.92); backdrop-filter: blur(18px); border-bottom: 1px solid rgba(226,232,240,0.8); box-shadow: 0 1px 20px rgba(15,23,42,0.04); }
.nav-container { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand-logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--brand-700); white-space: nowrap; }
.brand-logo i { font-size: 22px; color: var(--accent-500); }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav .nav-link { padding: 8px 16px; border-radius: 999px; font-size: 15px; font-weight: 500; color: var(--text-weak); white-space: nowrap; }
.main-nav .nav-link:hover { color: var(--brand-600); background: var(--brand-50); }
.main-nav .nav-link.active { color: #fff; background: var(--brand-600); box-shadow: 0 4px 14px rgba(79,70,229,0.3); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.search-form { display: flex; align-items: center; background: #f1f5f9; border-radius: 999px; padding: 4px 4px 4px 16px; border: 1px solid transparent; transition: var(--transition); }
.search-form:focus-within { background: #fff; border-color: var(--brand-500); box-shadow: 0 0 0 4px rgba(99,102,241,0.12); }
.search-form input { border: none; outline: none; background: transparent; font-size: 14px; width: 160px; color: var(--text-main); }
.search-form button { background: var(--brand-600); color: #fff; border: none; width: 34px; height: 34px; border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.search-form button:hover { background: var(--brand-700); transform: scale(1.05); }
.btn-action { display: inline-flex; align-items: center; gap: 8px; background: linear-gradient(135deg, #f59e0b, #fbbf24); color: #1e293b; font-weight: 700; padding: 10px 24px; border-radius: 999px; font-size: 14px; box-shadow: 0 4px 16px rgba(245,158,11,0.35); transition: var(--transition); }
.btn-action:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,158,11,0.45); }
.menu-toggle { display: none; background: none; border: 1px solid var(--border-soft); border-radius: 10px; width: 40px; height: 40px; align-items: center; justify-content: center; font-size: 18px; color: var(--text-main); }

/* ===== Hero ===== */
.hero-section { position: relative; min-height: 92vh; display: flex; align-items: center; padding: 140px 0 100px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(2,6,23,0.88) 0%, rgba(15,23,42,0.72) 55%, rgba(30,41,59,0.45) 100%); }
.hero-content { position: relative; z-index: 2; max-width: 720px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.2); color: #fbbf24; padding: 8px 20px; border-radius: 999px; font-size: 14px; font-weight: 600; backdrop-filter: blur(8px); }
.hero-title { font-size: 56px; font-weight: 900; color: #fff; line-height: 1.15; margin-top: 24px; letter-spacing: -0.03em; }
.hero-title span { color: #fbbf24; }
.hero-sub { font-size: 18px; color: rgba(255,255,255,0.85); margin-top: 20px; line-height: 1.8; max-width: 560px; }
.hero-actions { display: flex; gap: 16px; margin-top: 36px; flex-wrap: wrap; }
.btn-primary { display: inline-flex; align-items: center; gap: 10px; background: linear-gradient(135deg, #6366f1, #4f46e5); color: #fff; font-weight: 700; padding: 14px 32px; border-radius: 999px; font-size: 16px; box-shadow: 0 8px 28px rgba(79,70,229,0.4); transition: var(--transition); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 36px rgba(79,70,229,0.5); }
.btn-outline-light { display: inline-flex; align-items: center; gap: 10px; border: 2px solid rgba(255,255,255,0.4); color: #fff; font-weight: 600; padding: 12px 28px; border-radius: 999px; font-size: 16px; backdrop-filter: blur(4px); transition: var(--transition); }
.btn-outline-light:hover { background: rgba(255,255,255,0.15); border-color: #fff; transform: translateY(-2px); }
.hero-stats { display: flex; gap: 40px; margin-top: 60px; padding-top: 36px; border-top: 1px solid rgba(255,255,255,0.15); flex-wrap: wrap; }
.hero-stat-item .num { font-size: 30px; font-weight: 800; color: #fff; }
.hero-stat-item .label { font-size: 14px; color: rgba(255,255,255,0.6); margin-top: 2px; }

/* ===== Feature Intro ===== */
.feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; margin-top: 56px; }
.feature-image { border-radius: var(--radius-xl); overflow: hidden; box-shadow: 0 24px 60px rgba(15,23,42,0.16); position: relative; }
.feature-image img { width: 100%; height: 420px; object-fit: cover; }
.feature-list { display: flex; flex-direction: column; gap: 24px; margin-top: 32px; }
.feature-item { display: flex; gap: 16px; align-items: flex-start; }
.feature-icon { flex-shrink: 0; width: 52px; height: 52px; border-radius: 14px; background: var(--brand-50); color: var(--brand-600); display: flex; align-items: center; justify-content: center; font-size: 20px; }
.feature-item h3 { font-size: 16px; font-weight: 700; color: var(--bg-dark); }
.feature-item p { font-size: 14px; color: var(--text-weak); margin-top: 4px; line-height: 1.6; }

/* ===== Category Cards ===== */
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 56px; }
.cat-card { position: relative; border-radius: var(--radius-xl); overflow: hidden; box-shadow: var(--shadow-card); background: #fff; transition: var(--transition); }
.cat-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.cat-card .card-img { position: relative; height: 180px; overflow: hidden; }
.cat-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.cat-card:hover .card-img img { transform: scale(1.08); }
.cat-card .card-body { padding: 28px; }
.cat-card .cat-tag { display: inline-block; background: var(--brand-50); color: var(--brand-700); font-size: 13px; font-weight: 600; padding: 4px 12px; border-radius: 999px; }
.cat-card h3 { font-size: 20px; font-weight: 700; margin-top: 14px; color: var(--bg-dark); }
.cat-card p { font-size: 14px; color: var(--text-weak); margin-top: 8px; line-height: 1.7; }
.cat-card .card-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 18px; color: var(--brand-600); font-weight: 600; font-size: 14px; }
.cat-card .card-link:hover { gap: 10px; color: var(--brand-700); }

/* ===== News List ===== */
.news-section { background: #fff; border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 56px; }
.news-card { background: #fff; border: 1px solid var(--border-soft); border-radius: var(--radius-lg); overflow: hidden; transition: var(--transition); display: flex; flex-direction: column; }
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: transparent; }
.news-card .news-img { height: 160px; overflow: hidden; position: relative; }
.news-card .news-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.news-card:hover .news-img img { transform: scale(1.06); }
.news-card .news-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.news-meta { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-weak); }
.news-meta .badge { background: var(--brand-50); color: var(--brand-700); padding: 3px 10px; border-radius: 999px; font-weight: 600; font-size: 12px; }
.news-card h3 { font-size: 17px; font-weight: 700; margin-top: 10px; line-height: 1.5; color: var(--bg-dark); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card p { font-size: 14px; color: var(--text-weak); margin-top: 8px; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card .news-footer { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 16px; border-top: 1px solid #f1f5f9; margin-top: 16px; }
.news-card .news-footer .time { font-size: 13px; color: var(--text-weak); }
.news-card .news-footer .more { font-size: 14px; color: var(--brand-600); font-weight: 600; }
.news-empty { grid-column: 1 / -1; text-align: center; padding: 48px; color: var(--text-weak); background: #f8fafc; border-radius: var(--radius-lg); font-size: 16px; }

/* ===== Stats ===== */
.stats-section { background: var(--bg-dark); position: relative; overflow: hidden; }
.stats-section::before { content: ''; position: absolute; top: -100px; right: -100px; width: 400px; height: 400px; background: rgba(99,102,241,0.2); border-radius: 50%; filter: blur(80px); }
.stats-section .section-title { color: #fff; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-top: 56px; position: relative; z-index: 2; }
.stat-card { text-align: center; padding: 36px 20px; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius-lg); backdrop-filter: blur(8px); transition: var(--transition); }
.stat-card:hover { background: rgba(255,255,255,0.1); transform: translateY(-4px); }
.stat-card .num { font-size: 40px; font-weight: 800; color: #fbbf24; line-height: 1.2; }
.stat-card .label { font-size: 14px; color: rgba(255,255,255,0.7); margin-top: 8px; }

/* ===== Flow / Journey ===== */
.flow-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-top: 56px; position: relative; }
.flow-grid::before { content: ''; position: absolute; top: 40px; left: 10%; right: 10%; height: 2px; background: linear-gradient(90deg, var(--brand-100), var(--brand-500), var(--brand-100)); }
.flow-card { text-align: center; position: relative; padding-top: 8px; }
.flow-icon { width: 80px; height: 80px; margin: 0 auto; background: #fff; border: 3px solid var(--brand-500); border-radius: 24px; display: flex; align-items: center; justify-content: center; font-size: 28px; color: var(--brand-600); box-shadow: 0 8px 24px rgba(79,70,229,0.18); position: relative; z-index: 2; }
.flow-card h3 { font-size: 18px; font-weight: 700; margin-top: 20px; color: var(--bg-dark); }
.flow-card p { font-size: 14px; color: var(--text-weak); margin-top: 8px; line-height: 1.6; }

/* ===== FAQ ===== */
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 56px; }
.faq-item { background: #fff; border: 1px solid var(--border-soft); border-radius: var(--radius-md); padding: 28px; transition: var(--transition); }
.faq-item:hover { box-shadow: var(--shadow-card); border-color: var(--brand-500); }
.faq-item h3 { display: flex; align-items: flex-start; gap: 12px; font-size: 16px; font-weight: 700; color: var(--bg-dark); }
.faq-item h3 i { color: var(--brand-500); margin-top: 4px; }
.faq-item p { font-size: 14px; color: var(--text-weak); line-height: 1.75; margin-top: 12px; }

/* ===== CTA ===== */
.cta-section { position: relative; overflow: hidden; }
.cta-box { position: relative; background: linear-gradient(135deg, var(--brand-800), var(--brand-600)); border-radius: 32px; padding: 64px 56px; text-align: center; overflow: hidden; }
.cta-box::before { content: ''; position: absolute; top: -60px; right: -60px; width: 240px; height: 240px; background: rgba(255,255,255,0.1); border-radius: 50%; }
.cta-box::after { content: ''; position: absolute; bottom: -80px; left: 40px; width: 200px; height: 200px; background: rgba(251,191,36,0.15); border-radius: 50%; }
.cta-box h2 { font-size: 36px; font-weight: 800; color: #fff; position: relative; z-index: 2; }
.cta-box p { font-size: 16px; color: rgba(255,255,255,0.8); margin-top: 16px; max-width: 560px; margin-left: auto; margin-right: auto; position: relative; z-index: 2; }
.cta-actions { margin-top: 32px; position: relative; z-index: 2; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-white { display: inline-flex; align-items: center; gap: 8px; background: #fff; color: var(--brand-700); font-weight: 700; padding: 14px 32px; border-radius: 999px; font-size: 15px; box-shadow: 0 8px 24px rgba(0,0,0,0.15); transition: var(--transition); }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(0,0,0,0.2); }
.btn-ghost { display: inline-flex; align-items: center; gap: 8px; border: 2px solid rgba(255,255,255,0.4); color: #fff; font-weight: 600; padding: 12px 28px; border-radius: 999px; font-size: 15px; transition: var(--transition); }
.btn-ghost:hover { background: rgba(255,255,255,0.12); border-color: #fff; }

/* ===== Footer ===== */
.site-footer { background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 72px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; padding-bottom: 48px; }
.footer-brand .brand-logo { color: #fff; }
.footer-brand p { font-size: 14px; line-height: 1.8; margin-top: 16px; max-width: 300px; }
.footer-brand .social-row { display: flex; gap: 12px; margin-top: 20px; }
.footer-brand .social-row a { width: 38px; height: 38px; border-radius: 10px; border: 1px solid rgba(255,255,255,0.15); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.7); font-size: 15px; transition: var(--transition); }
.footer-brand .social-row a:hover { background: var(--brand-600); border-color: var(--brand-600); color: #fff; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 20px; }
.footer-col a { display: block; font-size: 14px; color: rgba(255,255,255,0.55); padding: 6px 0; transition: var(--transition); }
.footer-col a:hover { color: #fbbf24; padding-left: 4px; }
.footer-col p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.55); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 24px 0; text-align: center; font-size: 13px; color: rgba(255,255,255,0.4); }
.footer-bottom a { color: rgba(255,255,255,0.55); }
.footer-bottom a:hover { color: #fbbf24; }

/* ===== Mobile Responsive ===== */
@media (max-width: 1024px) {
  .cat-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
  .flow-grid::before { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-container { gap: 12px; }
  .search-form input { width: 100px; }
  .hero-title { font-size: 44px; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .main-nav { display: none; position: absolute; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 20px; gap: 4px; box-shadow: 0 20px 40px rgba(0,0,0,0.08); border-radius: 0 0 20px 20px; }
  .main-nav.open { display: flex; }
  .main-nav .nav-link { width: 100%; text-align: center; padding: 12px; }
  .menu-toggle { display: flex; }
  .btn-action { display: none; }
  .feature-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-section { padding: 120px 0 80px; }
  .hero-title { font-size: 34px; }
  .hero-sub { font-size: 16px; }
  .hero-stats { gap: 24px; }
  .cat-grid, .news-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .cta-box { padding: 48px 28px; }
  .cta-box h2 { font-size: 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .search-form input { width: 80px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .section-title { font-size: 26px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .flow-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 28px; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-outline-light { width: 100%; justify-content: center; }
  .search-form { display: none; }
  .brand-logo i { font-size: 18px; }
  .brand-logo { font-size: 17px; }
}

/* roulang page: article */
:root {
  --primary: #6c63ff;
  --primary-600: #5a4ff2;
  --primary-100: #eceafe;
  --accent: #22d3ee;
  --accent-600: #0ba7c7;
  --bg-deep: #070b16;
  --bg-body: #0d1220;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-solid: #161c31;
  --border: rgba(255, 255, 255, 0.08);
  --text-primary: #eef1f8;
  --text-secondary: #a3afc7;
  --text-muted: #6b7794;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 100px;
  --shadow-md: 0 12px 40px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.55);
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  background: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

button, input {
  font-family: inherit;
  outline: none;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 站点头部 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13, 18, 32, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  white-space: nowrap;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-logo i {
  font-size: 1.5rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: var(--transition);
  border: 1px solid transparent;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.nav-link.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-600));
  box-shadow: 0 4px 18px rgba(108, 99, 255, 0.35);
}

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

.header-search {
  position: relative;
}

.header-search input {
  width: 180px;
  height: 40px;
  padding: 0 14px 0 38px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-size: 0.85rem;
  transition: var(--transition);
}

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

.header-search input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.15);
  width: 220px;
}

.header-search i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 42px;
  padding: 0 22px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary), #8b7dff);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(108, 99, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(108, 99, 255, 0.45);
  color: #fff;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 42px;
  padding: 0 22px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  background: transparent;
  cursor: pointer;
  transition: var(--transition);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--text-primary);
  background: rgba(108, 99, 255, 0.08);
}

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

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* 文章横幅 */
.article-banner {
  position: relative;
  padding: 90px 0 70px;
  background-size: cover;
  background-position: center;
}

.article-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 11, 22, 0.75) 0%, rgba(13, 18, 32, 0.92) 100%);
  z-index: 1;
}

.article-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 42px 42px;
  z-index: 1;
}

.article-banner-inner {
  position: relative;
  z-index: 2;
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 26px;
}

.breadcrumb a {
  color: var(--text-secondary);
}

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

.breadcrumb i {
  font-size: 0.65rem;
  color: var(--text-muted);
}

.category-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: var(--radius-full);
  background: rgba(108, 99, 255, 0.15);
  border: 1px solid rgba(108, 99, 255, 0.35);
  color: #a9a2ff;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
}

.article-banner h1 {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.35;
  color: #fff;
  margin-bottom: 24px;
  letter-spacing: 0.5px;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.article-meta i {
  color: var(--accent);
  font-size: 0.9rem;
}

/* 主内容区 */
.article-main {
  padding: 70px 0 20px;
}

.article-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 40px;
  align-items: start;
}

.article-content-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 52px;
  box-shadow: var(--shadow-md);
}

.rich-text {
  color: #d8deeb;
  font-size: 1.02rem;
  line-height: 1.95;
}

.rich-text p {
  margin-bottom: 1.6rem;
}

.rich-text h2 {
  font-size: 1.55rem;
  font-weight: 700;
  color: #fff;
  margin: 2.6rem 0 1.2rem;
  padding-left: 16px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}

.rich-text h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #f0f2fa;
  margin: 2rem 0 0.9rem;
}

.rich-text ul, .rich-text ol {
  padding-left: 1.6rem;
  margin-bottom: 1.5rem;
}

.rich-text ul li, .rich-text ol li {
  margin-bottom: 0.55rem;
}

.rich-text ul li::marker {
  color: var(--accent);
}

.rich-text a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.rich-text a:hover {
  color: #7de3f5;
}

.rich-text blockquote {
  border-left: 4px solid var(--accent);
  background: rgba(34, 211, 238, 0.07);
  padding: 18px 24px;
  border-radius: 0 12px 12px 0;
  margin: 1.8rem 0;
  color: var(--text-secondary);
  font-style: italic;
}

.rich-text img {
  border-radius: var(--radius-md);
  margin: 1.8rem 0;
  box-shadow: var(--shadow-md);
}

.rich-text table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.8rem 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  font-size: 0.92rem;
}

.rich-text table th {
  background: rgba(108, 99, 255, 0.15);
  color: #fff;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
}

.rich-text table td {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
}

.rich-text table tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

.not-found-box {
  text-align: center;
  padding: 80px 30px;
}

.not-found-box i {
  font-size: 4rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.not-found-box h2 {
  font-size: 1.8rem;
  color: var(--text-primary);
  margin-bottom: 15px;
}

.not-found-box p {
  color: var(--text-secondary);
  margin-bottom: 30px;
}

/* 侧边栏 */
.sidebar-col {
  display: flex;
  flex-direction: column;
  gap: 28px;
  position: sticky;
  top: 96px;
}

.side-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  transition: var(--transition);
}

.side-card:hover {
  border-color: rgba(108, 99, 255, 0.3);
  box-shadow: var(--shadow-md);
}

.side-card-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.side-card-title i {
  color: var(--primary);
  font-size: 1.05rem;
}

.side-cat-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.side-cat-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 14px;
  border-radius: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.side-cat-list a:hover {
  background: rgba(108, 99, 255, 0.08);
  color: var(--text-primary);
  transform: translateX(4px);
}

.side-cat-list a span {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.side-post-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.side-post-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.side-post-item img {
  width: 66px;
  height: 52px;
  object-fit: cover;
  border-radius: 8px;
  flex-shrink: 0;
}

.side-post-item a {
  font-size: 0.86rem;
  line-height: 1.5;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.side-post-item a:hover {
  color: var(--accent);
}

.side-security {
  background: linear-gradient(145deg, rgba(108, 99, 255, 0.12), rgba(34, 211, 238, 0.08));
  border-color: rgba(108, 99, 255, 0.25);
}

.side-security i.shield-icon {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 14px;
}

.side-security p {
  font-size: 0.87rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 相关阅读 */
.related-section {
  padding: 60px 0 30px;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
}

.section-head h2 {
  font-size: 1.75rem;
  font-weight: 800;
  position: relative;
  padding-left: 18px;
}

.section-head h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 26px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  border-radius: 3px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.related-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(108, 99, 255, 0.35);
}

.related-card-img {
  height: 180px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.related-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(13, 18, 32, 0.85) 100%);
}

.related-card-body {
  padding: 22px 24px 26px;
}

.related-card-body a {
  font-size: 1.02rem;
  font-weight: 600;
  color: #f0f2fa;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card-body a:hover {
  color: var(--accent);
}

.related-card-tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--accent);
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.25);
  padding: 3px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

/* FAQ */
.faq-section {
  padding: 60px 0 30px;
}

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

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

.faq-item:hover {
  border-color: rgba(108, 99, 255, 0.3);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 26px;
  cursor: pointer;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-primary);
  width: 100%;
  background: transparent;
  border: none;
  text-align: left;
}

.faq-question i {
  color: var(--accent);
  font-size: 0.9rem;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer-inner {
  padding: 0 26px 22px;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.85;
}

/* CTA 区域 */
.cta-section {
  padding: 80px 0;
}

.cta-box {
  position: relative;
  border-radius: 26px;
  padding: 65px 50px;
  text-align: center;
  background: linear-gradient(135deg, #1a1440 0%, #151b2e 50%, #0a2540 100%);
  border: 1px solid rgba(108, 99, 255, 0.25);
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(108, 99, 255, 0.25), transparent 70%);
  border-radius: 50%;
}

.cta-box::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -40px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.15), transparent 70%);
  border-radius: 50%;
}

.cta-box > * {
  position: relative;
  z-index: 2;
}

.cta-box h2 {
  font-size: 1.9rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}

.cta-box p {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto 32px;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* 页脚 */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}

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

.footer-brand .brand-logo {
  margin-bottom: 16px;
  font-size: 1.25rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.88rem;
  max-width: 300px;
  line-height: 1.75;
}

.social-row {
  display: flex;
  gap: 12px;
  margin-top: 18px;
}

.social-row a {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition);
}

.social-row a:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-3px);
  border-color: var(--primary);
}

.footer-col h4 {
  font-size: 0.95rem;
  color: #fff;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-col a {
  display: block;
  padding: 5px 0;
  color: var(--text-muted);
  font-size: 0.88rem;
}

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

.footer-col p {
  color: var(--text-muted);
  font-size: 0.86rem;
  padding: 4px 0;
  line-height: 1.65;
}

.footer-col p i {
  width: 20px;
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 22px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.82rem;
}

/* 响应式 */
@media (max-width: 1024px) {
  .article-grid {
    grid-template-columns: 1fr;
  }
  .sidebar-col {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }
  .side-card {
    flex: 1;
    min-width: 240px;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .header-search input {
    width: 140px;
  }
  .header-search input:focus {
    width: 170px;
  }
}

@media (max-width: 768px) {
  .header-wrap {
    height: 68px;
  }
  .main-nav {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(13, 18, 32, 0.98);
    backdrop-filter: blur(18px);
    padding: 18px 24px;
    gap: 6px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    transition: transform 0.35s ease;
    z-index: 999;
  }
  .main-nav.open {
    transform: translateY(0);
  }
  .nav-link {
    padding: 13px 18px;
    font-size: 0.95rem;
  }
  .hamburger {
    display: flex;
  }
  .header-tools {
    gap: 8px;
  }
  .header-search {
    display: none;
  }
  .btn-primary {
    height: 38px;
    padding: 0 16px;
    font-size: 0.84rem;
  }
  .btn-outline {
    display: none;
  }
  .article-banner {
    padding: 60px 0 45px;
  }
  .article-banner h1 {
    font-size: 1.65rem;
  }
  .article-content-card {
    padding: 28px 22px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .cta-box {
    padding: 45px 24px;
  }
  .cta-box h2 {
    font-size: 1.4rem;
  }
  .article-meta {
    gap: 14px;
    font-size: 0.8rem;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }
  .brand-logo {
    font-size: 1.08rem;
  }
  .brand-logo i {
    font-size: 1.1rem;
  }
  .btn-primary {
    padding: 0 14px;
    font-size: 0.8rem;
  }
  .article-banner h1 {
    font-size: 1.35rem;
  }
  .breadcrumb {
    font-size: 0.75rem;
    flex-wrap: wrap;
  }
  .rich-text {
    font-size: 0.95rem;
  }
  .rich-text h2 {
    font-size: 1.25rem;
  }
  .section-head h2 {
    font-size: 1.35rem;
  }
  .cta-actions {
    flex-direction: column;
    width: 100%;
  }
  .cta-actions .btn-primary,
  .cta-actions .btn-outline {
    width: 100%;
    justify-content: center;
  }
}

/* roulang page: category1 */
:root {
            --primary: #4f46e5;
            --primary-dark: #312e81;
            --accent: #f59e0b;
            --deep: #0f172a;
            --bg: #f8fafc;
            --text: #1e293b;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius-xl: 24px;
            --radius-lg: 16px;
            --radius-md: 12px;
            --shadow-card: 0 10px 30px rgba(15, 23, 42, .06);
            --shadow-hover: 0 20px 40px rgba(15, 23, 42, .12);
            --transition: all .3s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Segoe UI', Roboto, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            font-size: 15px;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input,
        select,
        textarea {
            font-family: inherit;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 20px rgba(15, 23, 42, .04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            gap: 32px;
            height: 72px;
        }
        .brand-logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            letter-spacing: -.5px;
        }
        .brand-logo i {
            font-size: 1.2rem;
            color: var(--accent);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
        }
        .nav-link {
            padding: 9px 15px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-weak);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: #eef2ff;
        }
        .nav-link.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 6px 14px rgba(79, 70, 229, .35);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #f1f5f9;
            border-radius: 999px;
            padding: 8px 16px;
            border: 1px solid transparent;
            transition: var(--transition);
            min-width: 180px;
        }
        .search-box:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(79, 70, 229, .12);
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 13px;
            width: 100%;
            color: var(--text);
        }
        .search-box i {
            color: var(--text-weak);
            font-size: 13px;
        }
        .btn-login {
            padding: 8px 16px;
            border-radius: 999px;
            background: #eef2ff;
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            border: 1px solid #e0e7ff;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .btn-login:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-start {
            padding: 9px 18px;
            border-radius: 999px;
            background: linear-gradient(135deg, #4f46e5, #7c3aed);
            color: #fff;
            font-weight: 700;
            font-size: 13px;
            box-shadow: 0 6px 16px rgba(79, 70, 229, .35);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .btn-start:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(79, 70, 229, .45);
        }
        .menu-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 8px 10px;
            color: var(--text);
            font-size: 16px;
        }
        .page-hero {
            position: relative;
            padding: 96px 0 80px;
            background-color: var(--deep);
            background-image: linear-gradient(120deg, rgba(15, 23, 42, .88), rgba(49, 46, 129, .78)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            text-align: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .22);
            border-radius: 999px;
            padding: 7px 18px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
            backdrop-filter: blur(6px);
        }
        .page-hero h1 {
            font-size: clamp(2rem, 5vw, 3.4rem);
            font-weight: 900;
            letter-spacing: -1px;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .page-hero h1 span {
            background: linear-gradient(90deg, #c7d2fe, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .page-hero .hero-desc {
            max-width: 720px;
            margin: 0 auto;
            color: rgba(255, 255, 255, .85);
            font-size: 16px;
            line-height: 1.8;
        }
        .breadcrumb-hero {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-bottom: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, .7);
        }
        .breadcrumb-hero a:hover {
            color: #fbbf24;
        }
        .breadcrumb-hero i {
            font-size: 10px;
            align-self: center;
        }
        .hero-chip-row {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 30px;
        }
        .hero-chip {
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: 999px;
            padding: 8px 16px;
            font-size: 13px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .hero-chip i {
            color: #fbbf24;
        }
        .hero-chip:hover {
            background: rgba(255, 255, 255, .2);
            transform: translateY(-2px);
        }
        .section {
            padding: 88px 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 48px;
        }
        .section-tag {
            display: inline-block;
            background: #eef2ff;
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .08em;
            border-radius: 999px;
            padding: 6px 14px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-header h2 {
            font-size: clamp(1.6rem, 3.6vw, 2.5rem);
            font-weight: 900;
            line-height: 1.3;
            letter-spacing: -.5px;
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--text-weak);
            font-size: 15px;
            line-height: 1.7;
        }
        .card-surface {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }
        .card-surface:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .platform-type-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
        }
        .platform-type-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .platform-type-card .card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .platform-type-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .platform-type-card:hover .card-img img {
            transform: scale(1.06);
        }
        .platform-type-card .card-body {
            padding: 24px;
        }
        .platform-type-card .badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(15, 23, 42, .75);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .15);
        }
        .platform-type-card h3 {
            font-size: 1.15rem;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .platform-type-card p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.65;
        }
        .platform-type-card .card-meta {
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
        }
        .platform-type-card .card-meta .link-more {
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .platform-type-card .card-meta .link-more:hover {
            gap: 8px;
        }
        .path-guide-section {
            background: var(--deep);
            color: #fff;
            position: relative;
            background-image: linear-gradient(115deg, rgba(15, 23, 42, .94), rgba(49, 46, 129, .86)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
        }
        .path-guide-section .section-header h2 {
            color: #fff;
        }
        .path-guide-section .section-header p {
            color: rgba(255, 255, 255, .7);
        }
        .path-guide-section .section-tag {
            background: rgba(251, 191, 36, .15);
            color: #fbbf24;
        }
        .path-steps {
            position: relative;
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            margin-top: 48px;
        }
        .path-step {
            position: relative;
            background: rgba(255, 255, 255, .07);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--radius-lg);
            padding: 26px 20px;
            backdrop-filter: blur(10px);
            transition: var(--transition);
        }
        .path-step:hover {
            background: rgba(255, 255, 255, .12);
            transform: translateY(-4px);
            border-color: rgba(251, 191, 36, .4);
        }
        .step-node {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, #4f46e5, #7c3aed);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 15px;
            color: #fff;
            box-shadow: 0 6px 16px rgba(79, 70, 229, .4);
            margin-bottom: 16px;
            border: 2px solid rgba(255, 255, 255, .25);
        }
        .path-step h3 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .path-step p {
            font-size: 13px;
            color: rgba(255, 255, 255, .7);
            line-height: 1.6;
        }
        .progress-note {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            margin-top: 40px;
            font-size: 14px;
            color: rgba(255, 255, 255, .8);
        }
        .progress-note .bar {
            width: 160px;
            height: 6px;
            background: rgba(255, 255, 255, .2);
            border-radius: 999px;
            overflow: hidden;
        }
        .progress-note .bar span {
            display: block;
            width: 68%;
            height: 100%;
            background: linear-gradient(90deg, #4f46e5, #fbbf24);
            border-radius: 999px;
        }
        .feature-card {
            padding: 24px;
            border-radius: var(--radius-lg);
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            height: 100%;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: #eef2ff;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(-6deg);
        }
        .feature-card h3 {
            font-size: 16px;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .feature-card p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.65;
        }
        .rank-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .rank-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .rank-cover {
            height: 150px;
            overflow: hidden;
            position: relative;
        }
        .rank-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .rank-card:hover .rank-cover img {
            transform: scale(1.06);
        }
        .rank-num {
            position: absolute;
            top: 12px;
            left: 12px;
            width: 30px;
            height: 30px;
            border-radius: 10px;
            background: rgba(15, 23, 42, .8);
            backdrop-filter: blur(6px);
            color: #fbbf24;
            font-weight: 800;
            font-size: 13px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .rank-score {
            position: absolute;
            right: 12px;
            top: 12px;
            background: linear-gradient(135deg, #4f46e5, #7c3aed);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 999px;
            box-shadow: 0 4px 10px rgba(79, 70, 229, .3);
        }
        .rank-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .rank-body h3 {
            font-size: 15px;
            font-weight: 800;
            margin-bottom: 6px;
        }
        .rank-body p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.6;
            flex: 1;
        }
        .rank-tags {
            display: flex;
            gap: 6px;
            margin-top: 14px;
            flex-wrap: wrap;
        }
        .rank-tag {
            background: #eef2ff;
            color: var(--primary);
            font-size: 11px;
            font-weight: 600;
            padding: 3px 8px;
            border-radius: 999px;
        }
        .rank-action {
            margin-top: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            border-radius: 999px;
            padding: 7px 16px;
            background: var(--deep);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            transition: var(--transition);
        }
        .rank-action:hover {
            background: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(79, 70, 229, .3);
        }
        .stats-section {
            background: linear-gradient(135deg, #312e81, #0f172a);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(circle at 20% 50%, rgba(129, 140, 248, .3) 0, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(251, 191, 36, .2) 0, transparent 40%);
        }
        .stat-item {
            position: relative;
            text-align: center;
            padding: 32px 20px;
        }
        .stat-item .num {
            font-size: 2.8rem;
            font-weight: 900;
            background: linear-gradient(90deg, #c7d2fe, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.1;
        }
        .stat-item .label {
            color: rgba(255, 255, 255, .75);
            font-size: 14px;
            margin-top: 8px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            margin-bottom: 12px;
            box-shadow: 0 2px 8px rgba(15, 23, 42, .03);
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: #c7d2fe;
            box-shadow: 0 6px 16px rgba(15, 23, 42, .06);
        }
        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            font-weight: 700;
            font-size: 15px;
        }
        .faq-q i {
            color: var(--primary);
            flex-shrink: 0;
            transition: transform .3s ease;
        }
        .faq-item.open .faq-q i {
            transform: rotate(45deg);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, opacity .4s ease, margin .4s ease;
            opacity: 0;
            margin-top: 0;
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.75;
        }
        .faq-item.open .faq-a {
            max-height: 240px;
            opacity: 1;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px dashed var(--border);
        }
        .cta-section {
            position: relative;
            background-image: linear-gradient(115deg, rgba(15, 23, 42, .9), rgba(79, 70, 229, .85)), url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            padding: 80px 0;
            color: #fff;
        }
        .cta-section h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            font-weight: 900;
            margin-bottom: 14px;
            letter-spacing: -.5px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, .8);
            max-width: 600px;
            margin: 0 auto;
        }
        .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
            color: #0f172a;
            font-weight: 800;
            border-radius: 999px;
            padding: 14px 30px;
            font-size: 15px;
            box-shadow: 0 10px 24px rgba(245, 158, 11, .35);
            transition: var(--transition);
        }
        .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 32px rgba(245, 158, 11, .45);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid rgba(255, 255, 255, .35);
            color: #fff;
            font-weight: 600;
            border-radius: 999px;
            padding: 14px 26px;
            font-size: 14px;
            transition: var(--transition);
            background: rgba(255, 255, 255, .08);
            backdrop-filter: blur(6px);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, .18);
            border-color: rgba(255, 255, 255, .6);
            transform: translateY(-2px);
        }
        .site-footer {
            background: var(--deep);
            color: rgba(255, 255, 255, .7);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-brand .brand-logo {
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            line-height: 1.75;
            margin-bottom: 18px;
            max-width: 320px;
        }
        .social-row {
            display: flex;
            gap: 10px;
        }
        .social-row a {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, .08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, .7);
            border: 1px solid rgba(255, 255, 255, .08);
            transition: var(--transition);
        }
        .social-row a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 99px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            margin-bottom: 10px;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: #c7d2fe;
            padding-left: 6px;
        }
        .footer-col p {
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            margin-bottom: 10px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, .45);
        }
        .mr-2 {
            margin-right: .5rem;
        }
        @media (max-width: 1024px) {
            .header-inner {
                gap: 16px;
            }
            .search-box {
                min-width: 140px;
            }
            .path-steps {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            .main-nav,
            .header-actions {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .main-nav.open {
                display: flex;
                flex-direction: column;
                align-items: stretch;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                padding: 12px 24px 20px;
                box-shadow: 0 12px 28px rgba(15, 23, 42, .1);
                gap: 4px;
            }
            .main-nav.open .nav-link {
                text-align: left;
                padding: 10px 16px;
                border-radius: 10px;
            }
            .page-hero {
                padding: 72px 0 60px;
            }
            .section {
                padding: 68px 0;
            }
            .path-steps {
                grid-template-columns: 1fr;
                max-width: 420px;
                margin-left: auto;
                margin-right: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .btn-start {
                display: none;
            }
            .page-hero {
                padding: 56px 0 48px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .hero-chip-row {
                gap: 6px;
            }
            .hero-chip {
                padding: 6px 12px;
                font-size: 12px;
            }
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(79, 70, 229, .45);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: category2 */
:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #a5b4fc;
  --secondary: #06b6d4;
  --secondary-dark: #0891b2;
  --accent: #f59e0b;
  --text-dark: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --bg-light: #f8fafc;
  --bg-alt: #eef2ff;
  --border-light: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-card: 0 4px 24px rgba(15, 23, 42, 0.08);
  --shadow-hover: 0 12px 32px rgba(15, 23, 42, 0.14);
  --transition: all 0.3s ease;
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { font-family:'Inter','PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif; background:#fff; color:var(--text-body); line-height:1.7; -webkit-font-smoothing:antialiased; }
a { text-decoration:none; color:inherit; transition:var(--transition); }
img { max-width:100%; display:block; }
button,input { font-family:inherit; }
.container { max-width:1200px; margin:0 auto; padding:0 24px; }

.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-light);
  box-shadow:0 1px 12px rgba(15,23,42,0.04);
}
.header-inner { display:flex; align-items:center; justify-content:space-between; height:64px; gap:20px; }
.brand-logo { display:flex; align-items:center; gap:8px; font-weight:800; font-size:1.15rem; color:var(--text-dark); white-space:nowrap; }
.brand-logo i { color:var(--primary); font-size:1.3rem; }
.main-nav { display:flex; align-items:center; gap:4px; margin:0 auto; }
.nav-link {
  padding:8px 16px; border-radius:8px; font-size:0.95rem; font-weight:500;
  color:var(--text-body); transition:var(--transition); white-space:nowrap;
}
.nav-link:hover { background:var(--bg-alt); color:var(--primary); }
.nav-link.active { background:var(--primary); color:#fff; font-weight:600; box-shadow:0 2px 8px rgba(99,102,241,0.35); }
.header-actions { display:flex; align-items:center; gap:8px; }
.search-box { display:flex; align-items:center; background:var(--bg-light); border:1px solid var(--border-light); border-radius:30px; padding:6px 14px; height:36px; width:200px; transition:var(--transition); }
.search-box:focus-within { border-color:var(--primary); box-shadow:0 0 0 3px rgba(99,102,241,0.15); }
.search-box i { font-size:0.85rem; color:var(--text-muted); margin-right:8px; }
.search-box input { border:none; outline:none; background:transparent; font-size:0.85rem; width:100%; color:var(--text-dark); }
.btn-login { padding:7px 16px; font-size:0.9rem; font-weight:600; border-radius:8px; border:1px solid var(--border-light); background:#fff; color:var(--text-dark); cursor:pointer; transition:var(--transition); }
.btn-login:hover { border-color:var(--primary); color:var(--primary); background:var(--bg-alt); }
.btn-primary { padding:7px 18px; font-size:0.9rem; font-weight:600; border-radius:8px; border:none; background:var(--primary); color:#fff; cursor:pointer; transition:var(--transition); box-shadow:0 2px 8px rgba(99,102,241,0.3); }
.btn-primary:hover { background:var(--primary-dark); box-shadow:0 4px 16px rgba(99,102,241,0.4); transform:translateY(-1px); }
.nav-toggle { display:none; background:none; border:none; font-size:1.4rem; color:var(--text-dark); cursor:pointer; padding:4px 8px; border-radius:8px; }
.nav-toggle:hover { background:var(--bg-light); }
.mobile-drawer { display:none; position:fixed; top:64px; left:0; right:0; background:#fff; border-bottom:1px solid var(--border-light); box-shadow:0 8px 24px rgba(15,23,42,0.1); padding:16px; z-index:99; flex-direction:column; gap:4px; }
.mobile-drawer.open { display:flex; }
.mobile-drawer .nav-link { padding:12px 16px; font-size:1rem; }
.mobile-drawer .nav-link.active { color:var(--primary); background:var(--bg-alt); }

.hero-section { position:relative; background-size:cover; background-position:center; padding:120px 0 96px; overflow:hidden; }
.hero-overlay { position:absolute; inset:0; background:linear-gradient(135deg, rgba(15,23,42,0.88) 0%, rgba(30,41,59,0.72) 50%, rgba(99,102,241,0.55) 100%); }
.hero-content { position:relative; z-index:2; color:#fff; }
.hero-badge { display:inline-flex; align-items:center; gap:8px; background:rgba(255,255,255,0.15); border:1px solid rgba(255,255,255,0.25); border-radius:30px; padding:6px 18px; font-size:0.9rem; font-weight:500; margin-bottom:20px; backdrop-filter:blur(4px); }
.hero-badge i { color:var(--accent); }
.hero-title { font-size:3.2rem; font-weight:800; line-height:1.2; margin-bottom:16px; letter-spacing:-0.02em; }
.hero-title span { color:#a5b4fc; }
.hero-sub { font-size:1.15rem; color:rgba(255,255,255,0.85); max-width:680px; margin-bottom:32px; line-height:1.8; }
.hero-stats { display:flex; gap:48px; margin-top:40px; flex-wrap:wrap; }
.hero-stat { text-align:left; }
.hero-stat .num { font-size:2rem; font-weight:800; color:#fff; line-height:1.2; }
.hero-stat .label { font-size:0.9rem; color:rgba(255,255,255,0.7); margin-top:2px; }
.hero-actions { display:flex; gap:16px; flex-wrap:wrap; }
.hero-btn-primary { background:var(--primary); color:#fff; padding:14px 28px; border-radius:12px; font-size:1rem; font-weight:600; transition:var(--transition); box-shadow:0 4px 20px rgba(99,102,241,0.4); border:none; cursor:pointer; }
.hero-btn-primary:hover { background:var(--primary-dark); transform:translateY(-2px); box-shadow:0 8px 32px rgba(99,102,241,0.5); }
.hero-btn-ghost { background:rgba(255,255,255,0.12); color:#fff; padding:14px 28px; border-radius:12px; font-size:1rem; font-weight:600; border:1px solid rgba(255,255,255,0.25); cursor:pointer; transition:var(--transition); backdrop-filter:blur(4px); }
.hero-btn-ghost:hover { background:rgba(255,255,255,0.2); transform:translateY(-2px); }

.section { padding:88px 0; }
.section-alt { background:var(--bg-light); }
.section-header { text-align:center; max-width:720px; margin:0 auto 56px; }
.section-tag { display:inline-block; background:var(--bg-alt); color:var(--primary); font-size:0.8rem; font-weight:700; padding:5px 14px; border-radius:30px; letter-spacing:0.02em; margin-bottom:16px; }
.section-title { font-size:2.2rem; font-weight:800; color:var(--text-dark); margin-bottom:12px; letter-spacing:-0.01em; }
.section-sub { font-size:1rem; color:var(--text-muted); line-height:1.7; }

.card-hover { transition:var(--transition); }
.card-hover:hover { transform:translateY(-6px); box-shadow:var(--shadow-hover); }

.login-method-card { background:#fff; border:1px solid var(--border-light); border-radius:var(--radius); padding:32px 24px; text-align:center; transition:var(--transition); position:relative; overflow:hidden; }
.login-method-card::before { content:''; position:absolute; top:0; left:0; right:0; height:4px; background:linear-gradient(90deg, var(--primary), var(--secondary)); opacity:0; transition:var(--transition); }
.login-method-card:hover::before { opacity:1; }
.login-method-card .icon-wrap { width:64px; height:64px; border-radius:20px; background:var(--bg-alt); display:flex; align-items:center; justify-content:center; margin:0 auto 20px; font-size:1.8rem; color:var(--primary); transition:var(--transition); }
.login-method-card:hover .icon-wrap { background:var(--primary); color:#fff; transform:scale(1.05); }
.login-method-card h3 { font-size:1.2rem; font-weight:700; color:var(--text-dark); margin-bottom:10px; }
.login-method-card p { font-size:0.93rem; color:var(--text-muted); line-height:1.7; margin-bottom:16px; }
.tag-row { display:flex; gap:6px; justify-content:center; flex-wrap:wrap; }
.tag { display:inline-block; background:var(--bg-light); border:1px solid var(--border-light); color:var(--text-body); font-size:0.78rem; font-weight:500; padding:3px 10px; border-radius:20px; }

.steps-path { max-width:820px; margin:0 auto; position:relative; padding:24px 0; }
.steps-path::before { content:''; position:absolute; left:31px; top:40px; bottom:40px; width:3px; background:linear-gradient(180deg, var(--primary-light), var(--secondary)); border-radius:3px; }
.step-item { display:flex; gap:20px; margin-bottom:32px; position:relative; }
.step-node { width:62px; height:62px; border-radius:50%; background:#fff; border:3px solid var(--primary); display:flex; align-items:center; justify-content:center; flex-shrink:0; z-index:1; box-shadow:0 0 0 5px rgba(99,102,241,0.15); transition:var(--transition); }
.step-item:hover .step-node { background:var(--primary); }
.step-item:hover .step-node .step-num { color:#fff; }
.step-num { font-weight:800; font-size:1.2rem; color:var(--primary); transition:var(--transition); }
.step-content { background:#fff; border:1px solid var(--border-light); border-radius:var(--radius); padding:24px 28px; flex:1; transition:var(--transition); }
.step-item:hover .step-content { box-shadow:var(--shadow-card); border-color:var(--primary-light); }
.step-content h3 { font-size:1.1rem; font-weight:700; color:var(--text-dark); margin-bottom:6px; }
.step-content p { font-size:0.92rem; color:var(--text-muted); line-height:1.7; }

.platform-card { background:#fff; border:1px solid var(--border-light); border-radius:var(--radius); overflow:hidden; transition:var(--transition); }
.platform-card:hover { transform:translateY(-6px); box-shadow:var(--shadow-hover); }
.platform-card img { width:100%; height:200px; object-fit:cover; }
.platform-card-body { padding:24px; }
.platform-card-body h3 { font-size:1.15rem; font-weight:700; color:var(--text-dark); margin-bottom:8px; }
.platform-card-body p { font-size:0.92rem; color:var(--text-muted); line-height:1.7; }
.platform-badge { display:inline-flex; align-items:center; gap:5px; background:var(--bg-alt); color:var(--primary); font-size:0.75rem; font-weight:600; padding:3px 10px; border-radius:20px; margin-top:12px; }

.issue-card { background:#fff; border:1px solid var(--border-light); border-radius:var(--radius); padding:28px; transition:var(--transition); display:flex; gap:16px; }
.issue-card:hover { box-shadow:var(--shadow-hover); border-color:var(--primary-light); }
.issue-icon { width:48px; height:48px; border-radius:12px; background:var(--bg-alt); display:flex; align-items:center; justify-content:center; font-size:1.3rem; color:var(--primary); flex-shrink:0; }
.issue-card h3 { font-size:1.05rem; font-weight:700; color:var(--text-dark); margin-bottom:6px; }
.issue-card p { font-size:0.9rem; color:var(--text-muted); line-height:1.7; }

.security-tip-card { background:#fff; border-radius:var(--radius); padding:24px; box-shadow:var(--shadow-card); display:flex; gap:14px; align-items:flex-start; transition:var(--transition); }
.security-tip-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-hover); }
.tip-icon { width:40px; height:40px; border-radius:10px; background:rgba(245,158,11,0.12); color:var(--accent); font-size:1rem; display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.security-tip-card h4 { font-size:1rem; font-weight:700; color:var(--text-dark); margin-bottom:4px; }
.security-tip-card p { font-size:0.87rem; color:var(--text-muted); line-height:1.6; }

.faq-item { background:#fff; border:1px solid var(--border-light); border-radius:var(--radius); margin-bottom:12px; overflow:hidden; transition:var(--transition); }
.faq-item:hover { border-color:var(--primary-light); }
.faq-item.open { box-shadow:var(--shadow-card); border-color:var(--primary-light); }
.faq-question { display:flex; align-items:center; justify-content:space-between; padding:20px 24px; cursor:pointer; font-size:1rem; font-weight:600; color:var(--text-dark); transition:var(--transition); }
.faq-question:hover { color:var(--primary); }
.faq-question i { color:var(--text-muted); transition:var(--transition); }
.faq-item.open .faq-question i { transform:rotate(180deg); color:var(--primary); }
.faq-answer { max-height:0; overflow:hidden; transition:max-height 0.4s ease; padding:0 24px; color:var(--text-muted); font-size:0.92rem; line-height:1.8; }

.cta-box { background:linear-gradient(135deg, var(--primary) 0%, var(--secondary-dark) 100%); border-radius:24px; padding:56px 48px; text-align:center; color:#fff; position:relative; overflow:hidden; }
.cta-box::before { content:''; position:absolute; top:-60px; right:-60px; width:200px; height:200px; border-radius:50%; background:rgba(255,255,255,0.1); }
.cta-box::after { content:''; position:absolute; bottom:-80px; left:-80px; width:240px; height:240px; border-radius:50%; background:rgba(255,255,255,0.08); }
.cta-box h2 { font-size:2.2rem; font-weight:800; margin-bottom:12px; position:relative; z-index:1; }
.cta-box p { font-size:1.1rem; opacity:0.9; max-width:600px; margin:0 auto 32px; position:relative; z-index:1; }
.cta-actions { display:flex; gap:16px; justify-content:center; position:relative; z-index:1; flex-wrap:wrap; }
.cta-btn-white { background:#fff; color:var(--primary); padding:14px 28px; border-radius:12px; font-size:1rem; font-weight:600; border:none; cursor:pointer; transition:var(--transition); }
.cta-btn-white:hover { background:var(--bg-alt); transform:translateY(-2px); box-shadow:0 8px 24px rgba(0,0,0,0.2); }
.cta-btn-outline { background:transparent; color:#fff; padding:13px 26px; border-radius:12px; font-size:1rem; font-weight:600; border:2px solid rgba(255,255,255,0.6); cursor:pointer; transition:var(--transition); }
.cta-btn-outline:hover { background:rgba(255,255,255,0.15); transform:translateY(-2px); border-color:#fff; }

.site-footer { background:var(--dark); color:rgba(255,255,255,0.85); padding:64px 0 0; }
.footer-grid { display:grid; grid-template-columns:1.5fr 1fr 1fr 1.2fr; gap:48px; padding-bottom:40px; }
.footer-brand .brand-logo { color:#fff; font-size:1.2rem; margin-bottom:16px; display:inline-flex; }
.footer-brand .brand-logo i { color:var(--primary-light); }
.footer-brand p { font-size:0.9rem; color:rgba(255,255,255,0.65); line-height:1.8; max-width:320px; }
.social-row { display:flex; gap:10px; margin-top:20px; }
.social-row a { width:36px; height:36px; border-radius:10px; background:rgba(255,255,255,0.1); display:flex; align-items:center; justify-content:center; color:rgba(255,255,255,0.8); font-size:0.9rem; transition:var(--transition); }
.social-row a:hover { background:var(--primary); color:#fff; transform:translateY(-3px); }
.footer-col h4 { color:#fff; font-size:1rem; font-weight:700; margin-bottom:16px; }
.footer-col a { display:block; color:rgba(255,255,255,0.65); font-size:0.9rem; padding:5px 0; transition:var(--transition); }
.footer-col a:hover { color:var(--primary-light); padding-left:4px; }
.footer-col p { font-size:0.9rem; color:rgba(255,255,255,0.65); padding:5px 0; }
.footer-col p i { width:20px; color:var(--primary-light); }
.footer-bottom { border-top:1px solid rgba(255,255,255,0.1); padding:20px 0; text-align:center; font-size:0.85rem; color:rgba(255,255,255,0.5); }

@media (max-width:1024px) {
  .main-nav { gap:2px; }
  .nav-link { padding:8px 10px; font-size:0.88rem; }
  .search-box { width:140px; }
  .header-actions { gap:6px; }
  .btn-primary { padding:7px 12px; font-size:0.85rem; }
  .hero-title { font-size:2.6rem; }
  .footer-grid { grid-template-columns:1fr 1fr 1fr; }
}
@media (max-width:768px) {
  .main-nav { display:none; }
  .header-actions { display:none; }
  .nav-toggle { display:block; }
  .hero-section { padding:80px 0 64px; }
  .hero-title { font-size:2rem; }
  .hero-sub { font-size:1rem; }
  .hero-stats { gap:24px; }
  .section { padding:64px 0; }
  .section-title { font-size:1.6rem; }
  .footer-grid { grid-template-columns:1fr 1fr; gap:32px; }
}
@media (max-width:520px) {
  .container { padding:0 16px; }
  .hero-title { font-size:1.7rem; }
  .hero-stats { flex-direction:column; gap:16px; }
  .section-title { font-size:1.4rem; }
  .footer-grid { grid-template-columns:1fr; }
  .section-header { margin-bottom:36px; }
  .steps-path::before { left:25px; }
  .step-node { width:50px; height:50px; }
  .step-num { font-size:1rem; }
  .step-content { padding:18px 16px; }
  .cta-box { padding:40px 20px; }
  .cta-box h2 { font-size:1.6rem; }
}

/* roulang page: category3 */
:root {
            --primary: #3b5bdb;
            --primary-dark: #1a2d7a;
            --primary-light: #eef4ff;
            --accent: #f59e0b;
            --dark-bg: #0b1026;
            --text-main: #1e2b47;
            --text-sub: #5a6b8c;
            --border-light: #e5eaf3;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 4px 24px rgba(20, 30, 80, 0.08);
            --shadow-hover: 0 12px 40px rgba(20, 30, 80, 0.15);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            color: var(--text-main);
            background: #f7f9fd;
            line-height: 1.7;
            margin: 0;
            padding: 0;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.4);
            box-shadow: 0 2px 20px rgba(20, 30, 80, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
            gap: 16px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-dark);
            white-space: nowrap;
        }
        .brand-logo i {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, #3b5bdb, #1a2d7a);
            border-radius: 10px;
            color: #fff;
            font-size: 17px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: auto;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            border-radius: 10px;
            transition: all .25s ease;
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: auto;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: #f1f4fa;
            border-radius: 50px;
            padding: 0 14px;
            height: 40px;
            border: 1px solid transparent;
            transition: all .25s;
        }
        .header-search:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(59, 91, 219, 0.12);
        }
        .header-search input {
            border: none;
            outline: none;
            background: transparent;
            width: 120px;
            font-size: 14px;
            color: var(--text-main);
        }
        .header-search input::placeholder {
            color: #9aa5b8;
        }
        .header-search i {
            color: #8a94a8;
            font-size: 14px;
            margin-right: 6px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #3b5bdb, #2f4ad6);
            color: #fff;
            border: none;
            padding: 10px 22px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            transition: all .3s;
            box-shadow: 0 4px 16px rgba(59, 91, 219, 0.3);
            white-space: nowrap;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(59, 91, 219, 0.4);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(59, 91, 219, 0.5);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            padding: 9px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            transition: all .3s;
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border: none;
            background: transparent;
            border-radius: 10px;
            color: var(--text-main);
            font-size: 20px;
            align-items: center;
            justify-content: center;
        }
        .mobile-toggle:hover {
            background: #f1f4fa;
        }
        @media (max-width: 1024px) {
            .header-search {
                display: none;
            }
            .main-nav {
                gap: 2px;
            }
            .nav-link {
                padding: 8px 12px;
                font-size: 14px;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 24px 20px;
                gap: 4px;
                box-shadow: 0 20px 40px rgba(20, 30, 80, 0.12);
                transform: translateY(-120%);
                transition: transform .35s ease;
                border-bottom: 1px solid var(--border-light);
            }
            .main-nav.open {
                transform: translateY(0);
            }
            .nav-link {
                width: 100%;
                padding: 12px 16px;
                font-size: 15px;
            }
            .header-actions {
                gap: 6px;
            }
            .header-actions .btn-primary {
                padding: 8px 16px;
                font-size: 13px;
            }
            .header-actions .btn-outline {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
        }
        .hero-banner {
            position: relative;
            padding: 80px 0 100px;
            background: linear-gradient(120deg, #0b1026 0%, #131d42 45%, #1a2d7a 100%);
            overflow: hidden;
        }
        .hero-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: .25;
        }
        .hero-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, transparent 0%, rgba(11, 16, 38, .6) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 50px;
            padding: 6px 16px;
            font-size: 13px;
            color: #c5d0ff;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }
        .hero-title span {
            color: #93b0ff;
        }
        .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 32px;
            line-height: 1.8;
            max-width: 640px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-card {
            position: relative;
            z-index: 2;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border-radius: 20px;
            padding: 24px;
            margin-top: 60px;
            max-width: 480px;
            color: #fff;
        }
        .hero-card .metric {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
        }
        .hero-card .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero-banner {
                padding: 50px 0 60px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-card {
                margin-top: 36px;
                padding: 18px;
            }
        }
        .section {
            padding: 80px 0;
        }
        .section-sm {
            padding: 56px 0;
        }
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 48px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 50px;
            padding: 5px 14px;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-sub);
            line-height: 1.7;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 52px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }
        .card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .feature-card {
            padding: 30px;
            position: relative;
        }
        .feature-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 18px;
            transition: all .3s;
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .feature-desc {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }
        .flow-section {
            background: #fff;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .flow-step {
            display: flex;
            gap: 18px;
            padding: 24px 0;
            border-bottom: 1px dashed var(--border-light);
            align-items: flex-start;
        }
        .flow-step:last-child {
            border-bottom: none;
        }
        .step-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, #3b5bdb, #1a2d7a);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .step-content h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-content p {
            font-size: 14px;
            color: var(--text-sub);
        }
        .security-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .security-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 20px;
            background: #f8faff;
            border: 1px solid var(--border-light);
            border-radius: 14px;
            transition: all .25s;
        }
        .security-item:hover {
            background: #fff;
            border-color: #c8d4f5;
            box-shadow: 0 4px 16px rgba(59, 91, 219, 0.08);
        }
        .security-item i {
            color: var(--primary);
            font-size: 18px;
            margin-top: 3px;
            flex-shrink: 0;
        }
        .security-item .text {
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .security-list {
                grid-template-columns: 1fr;
            }
        }
        .data-section {
            background: var(--dark-bg);
            color: #fff;
        }
        .data-number {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.2;
            background: linear-gradient(135deg, #93b0ff, #fff);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .data-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 8px;
        }
        .post-card {
            overflow: hidden;
        }
        .post-cover {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .post-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s;
        }
        .post-card:hover .post-cover img {
            transform: scale(1.05);
        }
        .post-card .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(4px);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
        }
        .post-body {
            padding: 20px;
        }
        .post-title {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
            color: var(--text-main);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-meta {
            display: flex;
            align-items: center;
            font-size: 12px;
            color: #9aa5b8;
            gap: 12px;
            margin-bottom: 10px;
        }
        .post-desc {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: 16px;
            padding: 24px;
            margin-bottom: 14px;
            transition: box-shadow .25s;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            cursor: pointer;
        }
        .faq-q i {
            color: var(--primary);
            transition: transform .3s;
            font-size: 14px;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-a {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-top: 12px;
            display: none;
        }
        .faq-item.open .faq-a {
            display: block;
        }
        .cta-section {
            background: linear-gradient(120deg, #1a2d7a, #0b1026);
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: .15;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-inner p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
        }
        .site-footer {
            background: #0d132a;
            color: #a5b0c8;
            padding: 60px 0 0;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 44px;
        }
        .footer-brand .brand-logo {
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: #7e8aa8;
            line-height: 1.8;
            margin-bottom: 20px;
            max-width: 320px;
        }
        .social-row {
            display: flex;
            gap: 12px;
        }
        .social-row a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: #a5b0c8;
            transition: all .25s;
        }
        .social-row a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: #7e8aa8;
            padding: 5px 0;
            transition: color .2s, padding-left .2s;
        }
        .footer-col a:hover {
            color: #b4c4ff;
            padding-left: 6px;
        }
        .footer-col p {
            color: #7e8aa8;
            margin: 6px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col i {
            color: #5a7bff;
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 22px 0;
            text-align: center;
            color: #5f6c8e;
            font-size: 13px;
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-sub);
            padding: 18px 0;
        }
        .breadcrumb a {
            color: var(--primary);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: var(--primary-dark);
        }
        .breadcrumb i {
            font-size: 12px;
            color: #b8c0d4;
        }
        .tool-banner {
            position: relative;
            padding: 48px 0 36px;
            background: linear-gradient(120deg, #f0f4ff 0%, #e8eeff 50%, #dfe7ff 100%);
            border-bottom: 1px solid #e0e6f2;
        }
        .tool-banner .container {
            position: relative;
            z-index: 2;
        }