/* roulang page: index */
:root {
  --primary: #6c5ce7;
  --primary-light: #8b7cf7;
  --primary-dark: #5546c8;
  --accent: #ff9f43;
  --accent-dark: #f08a2b;
  --bg: #f5f6fb;
  --surface: #ffffff;
  --sidebar-bg: #141628;
  --sidebar-text: #a7a9c0;
  --sidebar-active: #ffffff;
  --text: #1e2235;
  --text-weak: #7a7f96;
  --border: #e6e8f0;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(20, 22, 40, 0.05);
  --shadow-md: 0 6px 28px rgba(20, 22, 40, 0.08);
  --shadow-lg: 0 16px 48px rgba(20, 22, 40, 0.12);
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
section { padding: 80px 0; }
.section-head { text-align: center; margin-bottom: 48px; }
.section-eyebrow {
  display: inline-block; background: rgba(108, 92, 231, 0.1);
  color: var(--primary); font-size: 13px; font-weight: 600;
  letter-spacing: 2px; padding: 6px 18px; border-radius: 100px;
  margin-bottom: 14px; text-transform: uppercase;
}
.section-title { font-size: 34px; font-weight: 700; color: var(--text); line-height: 1.3; }
.section-desc { font-size: 16px; color: var(--text-weak); max-width: 640px; margin: 12px auto 0; }

/* ===== Layout ===== */
.site { display: flex; min-height: 100vh; }
.sidebar {
  width: 260px; position: fixed; left: 0; top: 0; bottom: 0;
  background: var(--sidebar-bg); color: var(--sidebar-text);
  display: flex; flex-direction: column; z-index: 100;
  padding: 32px 24px; overflow-y: auto;
}
.main-wrap { flex: 1; margin-left: 260px; min-width: 0; }

/* ===== Sidebar ===== */
.sidebar-brand {
  display: flex; align-items: center; gap: 12px;
  padding: 8px 4px 28px; border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 24px;
}
.sidebar-brand .brand-icon {
  width: 44px; height: 44px; border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; color: #fff; flex-shrink: 0;
  box-shadow: 0 6px 20px rgba(108, 92, 231, 0.4);
}
.brand-name { font-size: 18px; font-weight: 700; color: #fff; line-height: 1.3; }
.brand-name small { display: block; font-size: 11px; font-weight: 400; color: var(--sidebar-text); margin-top: 2px; letter-spacing: 1px; }

.side-nav { flex: 1; }
.side-link {
  display: flex; align-items: center; gap: 14px;
  padding: 13px 16px; border-radius: 12px;
  color: var(--sidebar-text); font-size: 15px; font-weight: 500;
  margin-bottom: 4px; position: relative; transition: var(--transition);
}
.side-link i { font-size: 18px; width: 22px; text-align: center; }
.side-link:hover { background: rgba(255, 255, 255, 0.06); color: #fff; transform: translateX(4px); }
.side-link.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff; box-shadow: 0 8px 24px rgba(108, 92, 231, 0.35);
}
.side-link.active i { color: #fff; }

.sidebar-cta {
  margin-top: 24px; padding: 24px 18px; text-align: center;
  background: rgba(255, 255, 255, 0.04); border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.07);
}
.sidebar-cta p { font-size: 12px; color: var(--sidebar-text); margin-top: 10px; }

/* ===== Mobile Header ===== */
.mobile-header {
  display: none; position: sticky; top: 0; z-index: 200;
  background: rgba(20, 22, 40, 0.95); backdrop-filter: blur(12px);
  padding: 14px 20px; align-items: center; justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.mobile-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; font-size: 16px; }
.mobile-brand i { font-size: 20px; color: var(--accent); }
.menu-toggle { color: #fff; font-size: 22px; padding: 6px; border-radius: 8px; transition: var(--transition); }
.menu-toggle:hover { background: rgba(255, 255, 255, 0.1); }

.mobile-drawer {
  display: none; position: fixed; top: 0; right: -320px; bottom: 0;
  width: 280px; background: var(--sidebar-bg); z-index: 300;
  padding: 32px 24px; transition: right 0.35s ease; box-shadow: -8px 0 32px rgba(0, 0, 0, 0.3);
}
.mobile-drawer.open { right: 0; }
.drawer-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0, 0, 0, 0.5);
  z-index: 250; backdrop-filter: blur(2px);
}
.drawer-overlay.show { display: block; }
.mobile-drawer .drawer-brand { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 28px; display: flex; align-items: center; gap: 12px; }
.mobile-drawer .drawer-brand i { color: var(--accent); font-size: 22px; }
.mobile-drawer .drawer-link {
  display: flex; align-items: center; gap: 14px; padding: 14px 12px;
  color: var(--sidebar-text); border-radius: 10px; font-size: 15px; font-weight: 500;
}
.mobile-drawer .drawer-link:hover, .mobile-drawer .drawer-link.active { background: rgba(255, 255, 255, 0.08); color: #fff; }

@media (max-width: 1024px) {
  .sidebar { display: none; }
  .main-wrap { margin-left: 0; }
  .mobile-header { display: flex; }
  .mobile-drawer { display: block; }
  .drawer-overlay.show { display: block; }
}

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 620px; display: flex; align-items: center;
  background: linear-gradient(135deg, rgba(20, 22, 40, 0.92) 0%, rgba(108, 92, 231, 0.78) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff; overflow: hidden;
}
.hero::after {
  content: ''; position: absolute; bottom: -80px; right: -40px;
  width: 380px; height: 380px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 159, 67, 0.35), transparent 70%);
  pointer-events: none;
}
.hero-content { position: relative; z-index: 2; max-width: 680px; padding: 80px 0; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255, 255, 255, 0.14); border-radius: 100px;
  padding: 8px 20px; font-size: 13px; font-weight: 500;
  backdrop-filter: blur(4px); border: 1px solid rgba(255, 255, 255, 0.15);
  margin-bottom: 24px;
}
.hero-badge i { color: var(--accent); }
.hero-title { font-size: 46px; font-weight: 700; line-height: 1.25; letter-spacing: 1px; }
.hero-title span { background: linear-gradient(120deg, var(--accent), #ffd28a); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-desc { font-size: 17px; color: rgba(255, 255, 255, 0.85); margin: 22px 0 34px; max-width: 540px; line-height: 1.8; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  display: flex; gap: 36px; margin-top: 48px;
  border-top: 1px solid rgba(255, 255, 255, 0.15); padding-top: 28px;
}
.hero-stat-num { font-size: 28px; font-weight: 700; color: #fff; }
.hero-stat-label { font-size: 13px; color: rgba(255, 255, 255, 0.7); margin-top: 2px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 30px; border-radius: 100px; font-size: 15px; font-weight: 600;
  transition: var(--transition); border: none; line-height: 1.4;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff; box-shadow: 0 8px 24px rgba(108, 92, 231, 0.35);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 32px rgba(108, 92, 231, 0.45); }
.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff; box-shadow: 0 8px 24px rgba(255, 159, 67, 0.35);
}
.btn-accent:hover { transform: translateY(-3px); box-shadow: 0 14px 32px rgba(255, 159, 67, 0.45); }
.btn-outline {
  background: transparent; color: #fff; border: 1.5px solid rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(4px);
}
.btn-outline:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); transform: translateY(-3px); }
.btn-block { width: 100%; justify-content: center; }

/* ===== Feature Cards ===== */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.feature-card {
  background: var(--surface); border-radius: var(--radius-lg);
  padding: 36px 28px; box-shadow: var(--shadow-sm);
  border: 1px solid rgba(230, 232, 240, 0.6);
  transition: var(--transition); position: relative; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0; transition: var(--transition);
}
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 60px; height: 60px; border-radius: 16px;
  background: rgba(108, 92, 231, 0.1); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 22px; transition: var(--transition);
}
.feature-card:hover .feature-icon { background: var(--primary); color: #fff; transform: scale(1.05); }
.feature-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

/* ===== Category Cards ===== */
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.category-card {
  background: var(--surface); border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-sm); transition: var(--transition);
  display: block; border: 1px solid rgba(230, 232, 240, 0.6);
}
.category-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); }
.category-cover { position: relative; height: 200px; overflow: hidden; }
.category-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.category-card:hover .category-cover img { transform: scale(1.06); }
.category-cover::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(20, 22, 40, 0.35), transparent 60%);
}
.category-body { padding: 28px 24px; }
.category-body h3 { font-size: 20px; font-weight: 600; margin-bottom: 8px; }
.category-body p { font-size: 14px; color: var(--text-weak); line-height: 1.7; margin-bottom: 16px; }
.category-more { font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 8px; }
.category-card:hover .category-more i { transform: translateX(6px); }
.category-more i { transition: transform 0.3s ease; }

/* ===== News Cards ===== */
.news-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.news-card {
  background: var(--surface); border-radius: var(--radius-md);
  padding: 26px 28px; box-shadow: var(--shadow-sm);
  border: 1px solid rgba(230, 232, 240, 0.6); position: relative;
  transition: var(--transition); display: block; overflow: hidden;
}
.news-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  opacity: 0; transition: var(--transition);
}
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.news-card:hover::before { opacity: 1; }
.news-card-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.news-date { font-size: 13px; color: var(--text-weak); display: flex; align-items: center; gap: 6px; }
.news-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; line-height: 1.5; }
.news-card p { font-size: 14px; color: var(--text-weak); line-height: 1.7; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-more { font-size: 13px; color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.news-card:hover .news-more i { transform: translateX(4px); }
.news-more i { transition: transform 0.3s ease; }
.empty-tip {
  grid-column: 1 / -1; text-align: center; padding: 50px 20px;
  background: var(--surface); border-radius: var(--radius-md);
  color: var(--text-weak); font-size: 15px; border: 1px dashed var(--border);
}

/* ===== Badge ===== */
.badge {
  display: inline-block; font-size: 12px; font-weight: 600;
  padding: 4px 14px; border-radius: 100px; letter-spacing: 0.5px;
}
.badge-primary { background: rgba(108, 92, 231, 0.1); color: var(--primary); }
.badge-accent { background: rgba(255, 159, 67, 0.12); color: var(--accent-dark); }
.badge-green { background: rgba(46, 213, 115, 0.12); color: #2ecc71; }

/* ===== Stats Section ===== */
.stats-section {
  position: relative; background: linear-gradient(135deg, #141628, #1d1f3a);
  color: #fff; overflow: hidden;
}
.stats-section::before {
  content: ''; position: absolute; top: -60px; left: 10%;
  width: 320px; height: 320px; border-radius: 50%;
  background: radial-gradient(circle, rgba(108, 92, 231, 0.3), transparent 70%);
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; text-align: center; position: relative; z-index: 2; }
.stat-item { padding: 20px; }
.stat-num { font-size: 42px; font-weight: 700; background: linear-gradient(120deg, #fff, #c9c4ff); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.stat-label { font-size: 14px; color: rgba(255, 255, 255, 0.7); margin-top: 8px; letter-spacing: 1px; }
.stat-divider { width: 1px; background: rgba(255, 255, 255, 0.1); }

/* ===== Steps ===== */
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; counter-reset: step; }
.step-card {
  background: var(--surface); border-radius: var(--radius-lg); padding: 36px 24px;
  text-align: center; box-shadow: var(--shadow-sm); position: relative;
  transition: var(--transition); border: 1px solid rgba(230, 232, 240, 0.6);
}
.step-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); }
.step-num {
  width: 48px; height: 48px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff; font-size: 18px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px; box-shadow: 0 6px 16px rgba(108, 92, 231, 0.35);
}
.step-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

/* ===== Featured Section ===== */
.featured-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.featured-card { display: flex; background: var(--surface); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); border: 1px solid rgba(230, 232, 240, 0.6); }
.featured-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.featured-cover { width: 45%; min-height: 240px; overflow: hidden; position: relative; }
.featured-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.featured-card:hover .featured-cover img { transform: scale(1.06); }
.featured-body { flex: 1; padding: 32px 28px; display: flex; flex-direction: column; justify-content: center; }
.featured-body h3 { font-size: 20px; font-weight: 600; margin: 12px 0 10px; }
.featured-body p { font-size: 14px; color: var(--text-weak); line-height: 1.7; flex: 1; }
.featured-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.featured-link { margin-top: 14px; font-size: 14px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }
.featured-link i { transition: transform 0.3s ease; }
.featured-card:hover .featured-link i { transform: translateX(4px); }

/* ===== FAQ ===== */
.faq-wrap { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--surface); border-radius: var(--radius-md); margin-bottom: 16px; box-shadow: var(--shadow-sm); border: 1px solid rgba(230, 232, 240, 0.6); overflow: hidden; }
.faq-item summary {
  padding: 22px 28px; font-size: 16px; font-weight: 600; cursor: pointer;
  list-style: none; display: flex; align-items: center; justify-content: space-between;
  transition: var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+'; font-size: 24px; font-weight: 300; color: var(--primary);
  transition: transform 0.3s ease; flex-shrink: 0; margin-left: 16px;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item summary:hover { background: rgba(108, 92, 231, 0.04); }
.faq-item .faq-body { padding: 0 28px 24px; color: var(--text-weak); font-size: 15px; line-height: 1.8; }

/* ===== CTA ===== */
.cta-section {
  position: relative; background: linear-gradient(135deg, rgba(20, 22, 40, 0.9), rgba(108, 92, 231, 0.7)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff; text-align: center; padding: 90px 0; overflow: hidden;
}
.cta-section::before {
  content: ''; position: absolute; top: 20%; right: 10%;
  width: 260px; height: 260px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 159, 67, 0.3), transparent 70%);
}
.cta-section h2 { font-size: 36px; font-weight: 700; position: relative; z-index: 2; }
.cta-section p { font-size: 16px; color: rgba(255, 255, 255, 0.8); margin: 16px auto 36px; max-width: 520px; position: relative; z-index: 2; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; z-index: 2; }

/* ===== Footer ===== */
.site-footer {
  background: #141628; color: var(--sidebar-text); padding: 60px 0 0; margin-top: 40px;
}
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .footer-logo { display: flex; align-items: center; gap: 12px; color: #fff; font-size: 18px; font-weight: 700; margin-bottom: 16px; }
.footer-brand .footer-logo i { color: var(--accent); }
.footer-brand p { font-size: 14px; line-height: 1.8; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 20px; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { font-size: 14px; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent); padding-left: 6px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.07); padding: 24px 0;
  display: flex; align-items: center; justify-content: space-between;
  font-size: 13px; flex-wrap: wrap; gap: 12px;
}
.footer-bottom .domain { color: rgba(255, 255, 255, 0.4); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .container { padding: 0 24px; }
  section { padding: 60px 0; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .hero { min-height: 520px; }
  .hero-title { font-size: 32px; }
  .hero-desc { font-size: 15px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .hero-stats { gap: 20px; justify-content: space-between; }
  .hero-stat-num { font-size: 22px; }
  .section-title { font-size: 26px; }
  .category-grid { grid-template-columns: 1fr; }
  .news-list { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .featured-grid { grid-template-columns: 1fr; }
  .featured-card { flex-direction: column; }
  .featured-cover { width: 100%; min-height: 180px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-section h2 { font-size: 28px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .feature-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .hero { min-height: 460px; }
  .hero-title { font-size: 28px; }
  .section-title { font-size: 24px; }
  .section-eyebrow { font-size: 12px; padding: 5px 14px; }
  .category-cover { height: 160px; }
  .faq-item summary { padding: 18px 20px; font-size: 15px; }
  .faq-item .faq-body { padding: 0 20px 20px; font-size: 14px; }
}

/* Focus accessibility */
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px;
}

/* roulang page: category1 */
:root{
  --primary:#6d5ef4;
  --primary-light:#8b7df8;
  --primary-dark:#4e3fd8;
  --accent:#ffb03a;
  --accent-light:#ffe9c7;
  --bg:#f6f5fb;
  --surface:#ffffff;
  --text:#241f4a;
  --text-weak:#77729e;
  --border:#eae7f6;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(46,38,99,.06);
  --shadow-md:0 8px 30px rgba(46,38,99,.10);
  --shadow-lg:0 18px 50px rgba(46,38,99,.16);
  --space-section:96px;
  --font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-family);
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;border:none;cursor:pointer}
.container{max-width:1200px;margin:0 auto;padding:0 28px}
.section{padding:var(--space-section) 0}
.section-head{margin-bottom:48px}
.section-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary);
  background:rgba(109,94,244,.10);
  padding:6px 16px;border-radius:30px;letter-spacing:.5px;
  margin-bottom:14px;
}
.section-title{font-size:clamp(26px,3vw,36px);line-height:1.3;font-weight:800;letter-spacing:-.5px}
.section-desc{margin-top:12px;color:var(--text-weak);font-size:16px;max-width:680px}
.section-head.center{text-align:center}
.section-head.center .section-desc{margin-left:auto;margin-right:auto}

/* Layout */
.layout{display:flex;min-height:100vh}
.sidebar{
  width:264px;position:fixed;top:0;left:0;bottom:0;z-index:100;
  background:#1e1745;color:#fff;
  display:flex;flex-direction:column;
  padding:30px 22px;
  background-image:linear-gradient(160deg,#241c52 0%,#1a1440 60%,#140f33 100%);
  box-shadow:4px 0 30px rgba(20,15,51,.25);
}
.side-brand{
  display:flex;align-items:center;gap:12px;
  font-size:20px;font-weight:800;letter-spacing:.3px;
  padding:6px 8px 26px;
  border-bottom:1px solid rgba(255,255,255,.10);
  margin-bottom:26px;
}
.side-brand i{
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,var(--accent),#ff8c42);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;color:#241c52;box-shadow:0 6px 18px rgba(255,176,58,.35);
}
.side-nav{display:flex;flex-direction:column;gap:8px}
.side-link{
  display:flex;align-items:center;gap:14px;
  padding:13px 16px;border-radius:14px;
  color:rgba(255,255,255,.72);font-size:15px;font-weight:500;
  transition:all .25s ease;
}
.side-link i{width:20px;text-align:center;font-size:16px;opacity:.9}
.side-link:hover{background:rgba(255,255,255,.08);color:#fff;transform:translateX(4px)}
.side-link.active{
  background:linear-gradient(135deg,var(--primary-light),var(--primary));
  color:#fff;box-shadow:0 8px 24px rgba(109,94,244,.40);
}
.side-foot{
  margin-top:auto;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:rgba(255,255,255,.45);line-height:1.6;
  text-align:center;
}
.main-content{flex:1;margin-left:264px;min-width:0}
.mobile-toggle{display:none}

/* Hero */
.page-hero{
  position:relative;padding:110px 0 110px;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color:#fff;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(30,23,69,.92) 0%,rgba(36,28,82,.70) 45%,rgba(109,94,244,.35) 100%);
}
.page-hero::after{
  content:"";position:absolute;bottom:0;left:0;right:0;height:70px;
  background:linear-gradient(to top,var(--bg),transparent);
}
.page-hero .container{position:relative;z-index:2}
.crumb{
  display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.75);
  margin-bottom:22px;
}
.crumb a{transition:color .2s}
.crumb a:hover{color:var(--accent)}
.crumb i{font-size:11px;color:rgba(255,255,255,.4)}
.hero-title{font-size:clamp(34px,5vw,54px);font-weight:900;line-height:1.2;letter-spacing:-1px}
.hero-title span{color:var(--accent)}
.hero-desc{margin-top:20px;font-size:17px;max-width:620px;color:rgba(255,255,255,.85);line-height:1.8}
.hero-stats{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero-stat{
  background:rgba(255,255,255,.12);backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.18);border-radius:14px;
  padding:14px 24px;text-align:center;min-width:130px;
}
.hero-stat b{display:block;font-size:26px;font-weight:800;color:var(--accent)}
.hero-stat span{font-size:13px;color:rgba(255,255,255,.75)}

/* News Categories */
.cat-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.cat-card{
  background:var(--surface);border-radius:var(--radius-md);
  border:1px solid var(--border);padding:24px 18px;text-align:center;
  transition:all .3s ease;position:relative;overflow:hidden;
}
.cat-card::after{
  content:"";position:absolute;bottom:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:scaleX(0);transition:transform .3s ease;transform-origin:left;
}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:transparent}
.cat-card:hover::after{transform:scaleX(1)}
.cat-icon{
  width:52px;height:52px;border-radius:16px;margin:0 auto 14px;
  background:rgba(109,94,244,.10);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:22px;
  transition:all .3s ease;
}
.cat-card:hover .cat-icon{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;box-shadow:0 8px 20px rgba(109,94,244,.3)}
.cat-card h3{font-size:16px;font-weight:700;margin-bottom:6px}
.cat-card p{font-size:13px;color:var(--text-weak);line-height:1.5}

/* News Cards */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.news-card{
  background:var(--surface);border-radius:var(--radius-lg);
  overflow:hidden;border:1px solid var(--border);
  transition:all .35s ease;display:flex;flex-direction:column;
}
.news-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.news-cover{position:relative;height:200px;overflow:hidden}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-card:hover .news-cover img{transform:scale(1.06)}
.news-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(20,15,51,.25),transparent)}
.news-badge{
  position:absolute;top:14px;left:14px;z-index:2;
  background:rgba(255,255,255,.92);backdrop-filter:blur(6px);
  color:var(--primary);font-size:12px;font-weight:700;
  padding:5px 12px;border-radius:20px;box-shadow:var(--shadow-sm);
}
.news-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1}
.news-body h3{font-size:17px;font-weight:700;line-height:1.45;margin-bottom:10px}
.news-body h3 a{transition:color .2s}
.news-body h3 a:hover{color:var(--primary)}
.news-body p{font-size:14px;color:var(--text-weak);line-height:1.7;flex:1}
.news-meta{display:flex;align-items:center;gap:14px;margin-top:18px;padding-top:14px;border-top:1px solid var(--border);font-size:13px;color:var(--text-weak)}
.news-meta i{margin-right:4px;color:var(--primary-light)}
.news-meta .read-more{margin-left:auto;color:var(--primary);font-weight:600;transition:gap .2s;display:inline-flex;align-items:center;gap:4px}
.news-meta .read-more:hover{gap:8px}

/* Hot Rank */
.rank-wrap{display:grid;grid-template-columns:1.2fr 1fr;gap:36px;align-items:stretch}
.rank-feature{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;min-height:420px;
  display:flex;align-items:flex-end;color:#fff;
  background:url('/assets/images/coverpic/cover-2.png') center/cover no-repeat;
}
.rank-feature::before{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(20,15,51,.92) 0%,rgba(20,15,51,.25) 70%,transparent)}
.rank-feature-content{position:relative;z-index:2;padding:32px}
.rank-feature-tag{display:inline-block;background:var(--accent);color:#241f4a;font-size:12px;font-weight:700;padding:4px 14px;border-radius:20px;margin-bottom:12px}
.rank-feature-content h3{font-size:24px;font-weight:800;line-height:1.4;margin-bottom:10px}
.rank-feature-content p{font-size:14px;color:rgba(255,255,255,.8);line-height:1.7}
.rank-list{display:flex;flex-direction:column;gap:14px}
.rank-item{
  display:flex;align-items:center;gap:16px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
  padding:16px 18px;transition:all .25s ease;
}
.rank-item:hover{transform:translateX(-4px);box-shadow:var(--shadow-md);border-color:transparent}
.rank-num{
  width:38px;height:38px;flex-shrink:0;border-radius:12px;
  background:rgba(109,94,244,.10);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:800;
}
.rank-item:nth-child(1) .rank-num{background:linear-gradient(135deg,var(--accent),#ff8c42);color:#241f4a}
.rank-item:nth-child(2) .rank-num{background:linear-gradient(135deg,#c0c0c0,#e8e8e8);color:#333}
.rank-item:nth-child(3) .rank-num{background:linear-gradient(135deg,#d4a056,#c9823a);color:#fff}
.rank-info{flex:1;min-width:0}
.rank-info h4{font-size:15px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rank-info span{font-size:13px;color:var(--text-weak)}
.rank-trend{font-size:13px;font-weight:700;color:#22c55e;flex-shrink:0}
.rank-trend.down{color:#ef4444}

/* Stats */
.stats-section{background:linear-gradient(135deg,#1e1745 0%,#2a2160 55%,#3a2f7e 100%);position:relative;overflow:hidden}
.stats-section::before{
  content:"";position:absolute;width:400px;height:400px;border-radius:50%;
  background:rgba(109,94,244,.25);filter:blur(120px);top:-100px;right:-80px;
}
.stats-section::after{
  content:"";position:absolute;width:300px;height:300px;border-radius:50%;
  background:rgba(255,176,58,.14);filter:blur(100px);bottom:-120px;left:10%;
}
.stats-section .section-title,.stats-section .section-desc{color:#fff}
.stats-section .section-desc{color:rgba(255,255,255,.7)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:2}
.stat-card{
  background:rgba(255,255,255,.08);backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-lg);
  padding:36px 24px;text-align:center;transition:transform .3s ease;
}
.stat-card:hover{transform:translateY(-6px)}
.stat-card i{font-size:30px;color:var(--accent);margin-bottom:14px}
.stat-card b{display:block;font-size:38px;font-weight:900;color:#fff;letter-spacing:-1px}
.stat-card b em{font-style:normal;font-size:20px;color:var(--accent)}
.stat-card span{font-size:14px;color:rgba(255,255,255,.75);margin-top:6px;display:block}

/* Feature */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{
  background:var(--surface);border-radius:var(--radius-lg);
  border:1px solid var(--border);padding:34px 28px;
  transition:all .3s ease;position:relative;
}
.feature-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-6px)}
.feature-card .f-icon{
  width:56px;height:56px;border-radius:18px;font-size:24px;
  display:flex;align-items:center;justify-content:center;margin-bottom:20px;
}
.feature-card:nth-child(1) .f-icon{background:rgba(109,94,244,.12);color:var(--primary)}
.feature-card:nth-child(2) .f-icon{background:rgba(255,176,58,.15);color:#d4850a}
.feature-card:nth-child(3) .f-icon{background:rgba(34,197,94,.12);color:#22c55e}
.feature-card h3{font-size:19px;font-weight:700;margin-bottom:12px}
.feature-card p{font-size:14px;color:var(--text-weak);line-height:1.7}
.feature-card ul{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.feature-card ul li{font-size:14px;color:var(--text);display:flex;align-items:center;gap:8px}
.feature-card ul li i{color:var(--primary-light);font-size:13px}

/* FAQ */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);
  margin-bottom:14px;overflow:hidden;transition:all .3s ease;
}
.faq-item:hover{border-color:var(--primary-light)}
.faq-item.active{box-shadow:var(--shadow-sm);border-color:var(--primary-light)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:transparent;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);transition:color .2s;
}
.faq-q:hover{color:var(--primary)}
.faq-q i{color:var(--primary-light);transition:transform .3s ease;flex-shrink:0}
.faq-item.active .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease, padding .3s ease;padding:0 24px}
.faq-item.active .faq-a{max-height:300px;padding:0 24px 22px}
.faq-a p{font-size:14px;color:var(--text-weak);line-height:1.8}

/* CTA */
.cta-section{padding-top:0}
.cta-card{
  position:relative;border-radius:30px;overflow:hidden;padding:60px 56px;
  background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  text-align:center;color:#fff;
}
.cta-card::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(30,23,69,.94),rgba(77,63,216,.85))}
.cta-inner{position:relative;z-index:2}
.cta-inner h2{font-size:clamp(24px,3.5vw,36px);font-weight:800;margin-bottom:12px}
.cta-inner p{font-size:15px;color:rgba(255,255,255,.85);max-width:560px;margin:0 auto 30px}
.cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 28px;border-radius:40px;font-size:15px;font-weight:600;
  transition:all .25s ease;border:2px solid transparent;
}
.btn-primary{background:var(--accent);color:#241f4a;box-shadow:0 8px 24px rgba(255,176,58,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(255,176,58,.45);background:#ffbd55}
.btn-outline{border-color:rgba(255,255,255,.6);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-2px)}
.btn:focus-visible{outline:4px solid rgba(255,176,58,.4);outline-offset:2px}

/* Footer */
.site-footer{
  background:#171233;color:rgba(255,255,255,.7);
  padding:64px 0 30px;position:relative;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;margin-bottom:44px}
.footer-brand .footer-logo{
  display:flex;align-items:center;gap:12px;
  font-size:22px;font-weight:800;color:#fff;margin-bottom:16px;
}
.footer-brand .footer-logo i{
  width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--accent),#ff8c42);
  display:flex;align-items:center;justify-content:center;color:#241c52;font-size:18px;
}
.footer-brand p{font-size:14px;line-height:1.8;max-width:360px}
.footer-col h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul li a{font-size:14px;color:rgba(255,255,255,.6);transition:all .2s ease;display:inline-flex;align-items:center;gap:6px}
.footer-col ul li a:hover{color:var(--accent);transform:translateX(4px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding-top:26px;
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13px;color:rgba(255,255,255,.4);
}
.footer-bottom .domain{color:rgba(255,255,255,.25);letter-spacing:.5px}

/* Responsive */
@media (max-width:1200px){
  .cat-grid{grid-template-columns:repeat(3,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1024px){
  .layout{flex-direction:column}
  .sidebar{
    position:sticky;top:0;width:100%;height:auto;
    flex-direction:row;align-items:center;padding:14px 22px;
    border-radius:0;z-index:100;
  }
  .side-brand{padding:0;margin:0;border-bottom:none;flex-shrink:0}
  .side-nav{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:#1e1745;padding:14px 20px 20px;
    box-shadow:0 20px 40px rgba(20,15,51,.3);
  }
  .side-nav.open{display:flex;flex-direction:column}
  .mobile-toggle{
    display:flex;margin-left:auto;width:42px;height:42px;border-radius:12px;
    background:rgba(255,255,255,.1);color:#fff;font-size:18px;
    align-items:center;justify-content:center;transition:background .2s;
  }
  .mobile-toggle:hover{background:rgba(255,255,255,.2)}
  .main-content{margin-left:0}
  .page-hero{padding:80px 0}
  .rank-wrap{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .cta-card{padding:46px 30px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  :root{--space-section:72px}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat-card b{font-size:30px}
  .cta-card{padding:40px 24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
  .hero-stats{flex-direction:column}
  .hero-stat{min-width:auto}
  .page-hero{padding:64px 0}
  .section{padding:var(--space-section) 0}
  .section-title{font-size:26px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .cat-grid{grid-template-columns:1fr 1fr;gap:12px}
  .cat-card{padding:18px 12px}
  .news-meta{flex-wrap:wrap}
  .cta-btns{flex-direction:column;width:100%}
  .cta-btns .btn{width:100%;justify-content:center}
  .rank-item{padding:12px 14px}
  .rank-num{width:32px;height:32px;font-size:14px}
  .faq-q{padding:18px;font-size:15px}
  .faq-item.active .faq-a{padding:0 18px 18px}
}

/* roulang page: article */
/* ========== 设计变量 ========== */
        :root {
            --primary: #6C5CE7;
            --primary-dark: #5A4BD1;
            --primary-light: #EEF0FF;
            --accent: #A855F7;
            --accent-soft: #F5EFFF;
            --amber: #F59E0B;
            --amber-light: #FFF7E5;
            --bg: #F7F7FC;
            --surface: #FFFFFF;
            --ink: #1C1A2E;
            --ink-soft: #5B5876;
            --ink-mute: #8D8AA8;
            --line: #E6E6F0;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 12px rgba(44, 42, 80, 0.06);
            --shadow-md: 0 6px 30px rgba(44, 42, 80, 0.10);
            --shadow-lg: 0 16px 50px rgba(44, 42, 80, 0.16);
            --gradient: linear-gradient(135deg, #6C5CE7 0%, #A855F7 100%);
            --gradient-warm: linear-gradient(135deg, #F59E0B 0%, #FF6B6B 100%);
            --sidebar-w: 280px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ========== 基础 Reset ========== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--ink);
            background: var(--bg);
            min-height: 100vh;
        }

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

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

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

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

        ul, ol {
            list-style: none;
        }

        /* ========== 通用容器 ========== */
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 40px;
        }

        .container-narrow {
            max-width: 1000px;
        }

        /* ========== 布局骨架 ========== */
        .site-layout {
            display: flex;
            min-height: 100vh;
            width: 100%;
        }

        .site-sidebar {
            width: var(--sidebar-w);
            flex-shrink: 0;
            background: var(--surface);
            border-right: 1px solid var(--line);
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 200;
            padding: 0;
            overflow-y: auto;
            transition: transform var(--transition);
            display: flex;
            flex-direction: column;
        }

        .page-wrapper {
            flex: 1;
            min-width: 0;
            margin-left: var(--sidebar-w);
            display: flex;
            flex-direction: column;
        }

        .site-main {
            flex: 1;
        }

        /* ========== 侧边栏品牌 ========== */
        .sidebar-inner {
            display: flex;
            flex-direction: column;
            height: 100%;
            padding: 32px 24px 28px;
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 8px 10px 28px;
            margin-bottom: 20px;
            border-bottom: 1px solid var(--line);
            font-weight: 800;
            font-size: 20px;
            color: var(--ink);
            letter-spacing: 0.5px;
        }

        .sidebar-logo i {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            background: var(--gradient);
            border-radius: 14px;
            box-shadow: 0 6px 20px rgba(108, 92, 231, 0.4);
            transition: transform var(--transition);
        }

        .sidebar-logo:hover i {
            transform: rotate(-8deg) scale(1.05);
        }

        .sidebar-logo span {
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* ========== 侧边导航 ========== */
        .sidebar-nav-caption {
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--ink-mute);
            padding: 0 12px;
            margin-bottom: 14px;
        }

        .side-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .side-link {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 13px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--ink-soft);
            transition: all var(--transition);
            position: relative;
        }

        .side-link i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--ink-mute);
            transition: color var(--transition);
        }

        .side-link:hover {
            background: var(--primary-light);
            color: var(--primary);
            transform: translateX(4px);
        }

        .side-link:hover i {
            color: var(--primary);
        }

        .side-link.active {
            background: var(--gradient);
            color: #fff;
            box-shadow: 0 8px 24px rgba(108, 92, 231, 0.35);
        }

        .side-link.active i {
            color: #fff;
        }

        .side-link.active::after {
            content: "";
            position: absolute;
            right: 12px;
            width: 6px;
            height: 6px;
            background: #fff;
            border-radius: 50%;
            opacity: 0.7;
        }

        /* ========== 侧边卡片 ========== */
        .sidebar-card {
            margin-top: auto;
            background: var(--gradient);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .sidebar-card::after {
            content: "";
            position: absolute;
            width: 100px;
            height: 100px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 50%;
            top: -30px;
            right: -30px;
        }

        .sidebar-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }

        .sidebar-card p {
            font-size: 13px;
            opacity: 0.9;
            line-height: 1.6;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .sidebar-card .btn {
            position: relative;
            z-index: 1;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 14px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
        }

        .sidebar-card .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        /* ========== 移动端顶栏 ========== */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 300;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--line);
            padding: 12px 20px;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--shadow-sm);
        }

        .mobile-topbar .logo-text {
            font-weight: 800;
            font-size: 17px;
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .menu-toggle {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
        }

        .menu-toggle:hover {
            background: var(--primary);
            color: #fff;
        }

        .nav-backdrop {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(20, 18, 40, 0.5);
            z-index: 150;
            opacity: 0;
            transition: opacity var(--transition);
            pointer-events: none;
        }

        .nav-backdrop.show {
            opacity: 1;
            pointer-events: auto;
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-wrap {
            padding: 22px 0;
            background: var(--surface);
            border-bottom: 1px solid var(--line);
        }

        .breadcrumb-list {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 14px;
            color: var(--ink-mute);
        }

        .breadcrumb-list a {
            color: var(--ink-soft);
            font-weight: 500;
        }

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

        .breadcrumb-list .separator {
            font-size: 12px;
            color: var(--line);
        }

        .breadcrumb-list .current {
            color: var(--primary);
            font-weight: 600;
            max-width: 320px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: all var(--transition);
            cursor: pointer;
            border: 1px solid transparent;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--gradient);
            color: #fff;
            box-shadow: 0 8px 24px rgba(108, 92, 231, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(108, 92, 231, 0.42);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-accent {
            background: var(--amber);
            color: #fff;
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.32);
        }

        .btn-accent:hover {
            background: #EC8B00;
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(245, 158, 11, 0.4);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 10px 28px rgba(108, 92, 231, 0.28);
        }

        .btn-white {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(108, 92, 231, 0.4);
            outline-offset: 2px;
        }

        /* ========== 文章板块 ========== */
        .article-section {
            padding: 48px 0 72px;
        }

        .article-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            border: 1px solid rgba(108, 92, 231, 0.08);
        }

        /* 文章 Hero */
        .article-hero {
            position: relative;
            padding: 56px 64px 48px;
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }

        .article-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(28, 26, 46, 0.88) 30%, rgba(108, 92, 231, 0.55) 70%, rgba(168, 85, 247, 0.35) 100%);
        }

        .article-hero-inner {
            position: relative;
            z-index: 1;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 18px;
        }

        .badge-glass {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.18);
            border: 1px solid rgba(255, 255, 255, 0.32);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 50px;
            letter-spacing: 0.5px;
        }

        .hero-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 14px;
            opacity: 0.9;
            font-weight: 400;
        }

        .hero-meta-item i {
            font-size: 14px;
            opacity: 0.8;
        }

        .article-title {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.35;
            letter-spacing: 0.5px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
            max-width: 760px;
            margin-bottom: 0;
        }

        /* 文章正文 */
        .article-body {
            padding: 48px 64px 36px;
            font-size: 16.5px;
            line-height: 2;
            color: var(--ink-soft);
        }

        .article-body > *:first-child {
            margin-top: 0;
        }

        .article-body p {
            margin-bottom: 1.5em;
            word-break: break-word;
        }

        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--ink);
            margin: 2.2em 0 0.8em;
            letter-spacing: 0.5px;
            position: relative;
            padding-left: 18px;
        }

        .article-body h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0.15em;
            width: 6px;
            height: 1.1em;
            background: var(--gradient);
            border-radius: 4px;
        }

        .article-body h3 {
            font-size: 21px;
            font-weight: 700;
            color: var(--ink);
            margin: 1.8em 0 0.8em;
        }

        .article-body h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--ink);
            margin: 1.5em 0 0.6em;
        }

        .article-body ul {
            margin-bottom: 1.5em;
            padding-left: 6px;
        }

        .article-body ul li {
            position: relative;
            padding-left: 26px;
            margin-bottom: 0.7em;
        }

        .article-body ul li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0.62em;
            width: 10px;
            height: 10px;
            background: var(--gradient);
            border-radius: 50%;
            opacity: 0.7;
        }

        .article-body ol {
            margin-bottom: 1.5em;
            padding-left: 24px;
        }

        .article-body ol li {
            margin-bottom: 0.7em;
            padding-left: 6px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            padding: 18px 26px;
            margin: 2em 0;
            color: var(--ink-soft);
            font-style: italic;
            position: relative;
        }

        .article-body blockquote::before {
            content: "\201C";
            font-size: 60px;
            font-family: Georgia, serif;
            color: var(--primary);
            position: absolute;
            left: 10px;
            top: -6px;
            opacity: 0.35;
        }

        .article-body blockquote p {
            margin-bottom: 0;
        }

        .article-body img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin: 2em 0;
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 4px;
            text-decoration-color: rgba(108, 92, 231, 0.4);
        }

        .article-body a:hover {
            text-decoration-color: var(--primary);
        }

        .article-body strong {
            color: var(--ink);
            font-weight: 700;
        }

        .article-body hr {
            border: none;
            height: 1px;
            background: var(--line);
            margin: 2.5em 0;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 2em 0;
            font-size: 15px;
        }

        .article-body table th {
            background: var(--primary-light);
            color: var(--ink);
            font-weight: 600;
            padding: 12px 16px;
            text-align: left;
            border: 1px solid var(--line);
        }

        .article-body table td {
            padding: 12px 16px;
            border: 1px solid var(--line);
        }

        .article-body code {
            background: var(--primary-light);
            color: var(--primary-dark);
            font-family: "SF Mono", Monaco, Consolas, monospace;
            font-size: 14px;
            padding: 3px 8px;
            border-radius: 6px;
        }

        .article-body pre {
            background: #1C1A2E;
            color: #D6D2F0;
            padding: 22px 26px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            font-size: 14px;
            line-height: 1.7;
            margin: 2em 0;
        }

        .article-body pre code {
            background: none;
            color: inherit;
            padding: 0;
        }

        /* 文章底部 */
        .article-foot {
            padding: 28px 64px 44px;
            border-top: 1px solid var(--line);
            margin-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            transition: all var(--transition);
            cursor: default;
        }

        .tag:hover {
            background: var(--gradient);
            color: #fff;
            transform: translateY(-2px);
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--ink-mute);
        }

        .share-btn {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: all var(--transition);
        }

        .share-btn:hover {
            background: var(--gradient);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(108, 92, 231, 0.35);
        }

        /* ========== 文章未找到 ========== */
        .article-notfound {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--line);
            padding: 90px 60px;
            text-align: center;
        }

        .article-notfound i {
            font-size: 64px;
            color: var(--ink-mute);
            opacity: 0.4;
            margin-bottom: 20px;
        }

        .article-notfound h1 {
            font-size: 30px;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: 12px;
        }

        .article-notfound p {
            color: var(--ink-soft);
            font-size: 16px;
            margin-bottom: 32px;
        }

        /* ========== 相关推荐 ========== */
        .related-section {
            padding: 64px 0;
            background: var(--surface);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            padding: 6px 20px;
            border-radius: 50px;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }

        .section-title {
            font-size: 34px;
            font-weight: 800;
            color: var(--ink);
            letter-spacing: 0.5px;
            line-height: 1.3;
        }

        .section-title .highlight {
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-subtitle {
            color: var(--ink-mute);
            font-size: 15px;
            margin-top: 12px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .related-card {
            background: var(--bg);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--line);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(108, 92, 231, 0.2);
        }

        .related-cover {
            position: relative;
            padding-top: 62%;
            overflow: hidden;
        }

        .related-cover img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .related-card:hover .related-cover img {
            transform: scale(1.06);
        }

        .related-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(20, 18, 40, 0.35) 100%);
        }

        .related-cover .category-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 50px;
            box-shadow: var(--shadow-sm);
        }

        .related-info {
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 14px;
            flex: 1;
        }

        .related-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.5;
            transition: color var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card:hover .related-title {
            color: var(--primary);
        }

        .related-desc {
            font-size: 14px;
            color: var(--ink-mute);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-bottom {
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--line);
            font-size: 13px;
            color: var(--ink-mute);
        }

        .related-bottom .read-more {
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }

        .related-bottom .read-more:hover {
            gap: 10px;
        }

        /* ========== FAQ 板块 ========== */
        .faq-section {
            padding: 72px 0;
            background: var(--bg);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(108, 92, 231, 0.2);
        }

        .faq-item.open {
            box-shadow: var(--shadow-md);
            border-color: rgba(108, 92, 231, 0.3);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 28px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            cursor: pointer;
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            width: 34px;
            height: 34px;
            flex-shrink: 0;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: all var(--transition);
        }

        .faq-item.open .faq-icon {
            background: var(--gradient);
            color: #fff;
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease;
            color: var(--ink-soft);
            font-size: 15px;
            line-height: 1.8;
        }

        .faq-answer-inner {
            padding: 0 28px 24px 78px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        /* ========== CTA 板块 ========== */
        .cta-section {
            padding: 80px 0;
            background: var(--surface);
        }

        .cta-box {
            position: relative;
            border-radius: var(--radius-lg);
            padding: 64px;
            background-size: cover;
            background-position: center;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(28, 26, 46, 0.92) 40%, rgba(108, 92, 231, 0.7) 100%);
        }

        .cta-content {
            position: relative;
            z-index: 1;
            text-align: left;
            color: #fff;
            max-width: 560px;
        }

        .cta-content h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 14px;
        }

        .cta-content p {
            font-size: 16px;
            opacity: 0.9;
            line-height: 1.8;
            margin-bottom: 30px;
        }

        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .cta-box .btn-outline {
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
        }

        .cta-box .btn-outline:hover {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #191733;
            color: rgba(255, 255, 255, 0.72);
            padding: 64px 0 0;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-logo {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .footer-logo i {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            background: var(--gradient);
            border-radius: 12px;
            box-shadow: 0 6px 18px rgba(108, 92, 231, 0.45);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 360px;
            opacity: 0.72;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            letter-spacing: 1px;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 12px;
        }

        .footer-col h4::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 3px;
            background: var(--gradient);
            border-radius: 3px;
        }

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

        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-col ul a::before {
            content: "";
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.3);
            transition: all var(--transition);
        }

        .footer-col ul a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-col ul a:hover::before {
            background: var(--accent);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 24px 0 28px;
            font-size: 13px;
            opacity: 0.55;
        }

        .footer-bottom .domain {
            letter-spacing: 1px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .container {
                padding: 0 28px;
            }

            .article-body {
                padding: 40px 40px 32px;
            }

            .article-foot {
                padding: 24px 40px 40px;
            }

            .article-hero {
                padding: 48px 40px 40px;
            }

            .article-title {
                font-size: 30px;
            }

            .cta-box {
                padding: 48px 40px;
            }
        }

        @media (max-width: 900px) {
            :root {
                --sidebar-w: 280px;
            }

            .site-sidebar {
                transform: translateX(-100%);
                box-shadow: 4px 0 30px rgba(0, 0, 0, 0.15);
            }

            .site-sidebar.open {
                transform: translateX(0);
            }

            .page-wrapper {
                margin-left: 0;
                padding-top: 66px;
            }

            .mobile-topbar {
                display: flex;
            }

            .nav-backdrop {
                display: block;
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 20px;
            }

            .breadcrumb-wrap {
                padding: 16px 0;
            }

            .breadcrumb-list .current {
                max-width: 180px;
            }

            .article-section {
                padding: 24px 0 48px;
            }

            .article-card {
                border-radius: var(--radius-md);
            }

            .article-hero {
                padding: 40px 28px 32px;
            }

            .article-title {
                font-size: 24px;
            }

            .article-meta {
                gap: 12px;
            }

            .article-body {
                padding: 32px 28px 28px;
                font-size: 15.5px;
                line-height: 1.9;
            }

            .article-body h2 {
                font-size: 22px;
            }

            .article-body h3 {
                font-size: 19px;
            }

            .article-foot {
                padding: 20px 28px 34px;
                flex-direction: column;
                align-items: flex-start;
            }

            .article-notfound {
                padding: 60px 28px;
            }

            .article-notfound h1 {
                font-size: 24px;
            }

            .section-head {
                margin-bottom: 32px;
            }

            .section-title {
                font-size: 28px;
            }

            .related-section {
                padding: 48px 0;
            }

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

            .faq-section {
                padding: 48px 0;
            }

            .faq-question {
                padding: 16px 20px;
                font-size: 14.5px;
                gap: 12px;
            }

            .faq-answer-inner {
                padding: 0 20px 20px 20px;
            }

            .cta-section {
                padding: 48px 0;
            }

            .cta-box {
                padding: 40px 28px;
                border-radius: var(--radius-md);
            }

            .cta-content h2 {
                font-size: 24px;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-buttons .btn {
                justify-content: center;
            }

            .site-footer {
                padding-top: 48px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
                padding-bottom: 36px;
            }

            .footer-brand {
                grid-column: auto;
            }

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

        @media (max-width: 520px) {
            .related-grid {
                grid-template-columns: 1fr;
            }

            .article-title {
                font-size: 22px;
            }

            .hero-meta-item {
                font-size: 13px;
            }

            .badge-glass {
                font-size: 12px;
                padding: 4px 12px;
            }

            .sidebar-card {
                padding: 18px 16px;
            }
        }

        /* ========== 滚动条 ========== */
        .site-sidebar::-webkit-scrollbar {
            width: 4px;
        }

        .site-sidebar::-webkit-scrollbar-track {
            background: transparent;
        }

        .site-sidebar::-webkit-scrollbar-thumb {
            background: rgba(108, 92, 231, 0.3);
            border-radius: 4px;
        }

        .site-sidebar::-webkit-scrollbar-thumb:hover {
            background: rgba(108, 92, 231, 0.5);
        }

        /* ========== 焦点可见性 ========== */
        a:focus-visible {
            outline: 3px solid rgba(108, 92, 231, 0.4);
            outline-offset: 2px;
            border-radius: 6px;
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                animation: none !important;
                transition: none !important;
                scroll-behavior: auto !important;
            }
        }

/* roulang page: category2 */
:root{
  --primary:#6d4aff;
  --primary-dark:#5438d6;
  --primary-light:#efeaff;
  --accent:#ff7a59;
  --accent-light:#fff1ec;
  --bg:#f6f7fd;
  --bg-deep:#1a1d2e;
  --surface:#ffffff;
  --text:#1f2337;
  --text-weak:#6b7089;
  --text-light:#9ba0b8;
  --border:#e7e8f2;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(30,30,80,.04);
  --shadow-md:0 8px 30px rgba(30,30,80,.08);
  --shadow-lg:0 16px 50px rgba(30,30,80,.12);
  --space-lg:96px;
  --space-md:64px;
  --space-sm:40px;
  --side-width:260px;
  --transition:all .25s ease;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit;transition:var(--transition);}
img{max-width:100%;display:block;}
ul,ol{list-style:none;}
button,input,textarea{font-family:inherit;}

/* 布局 */
.site-shell{min-height:100vh;display:flex;}
.main-shell{flex:1;margin-left:var(--side-width);min-width:0;display:flex;flex-direction:column;}
.container{max-width:1280px;margin:0 auto;padding:0 40px;width:100%;}

/* 左侧导航 */
.side-nav-wrap{
  width:var(--side-width);
  background:var(--bg-deep);
  position:fixed;
  top:0;left:0;bottom:0;
  z-index:1000;
  display:flex;
  flex-direction:column;
  padding:32px 22px 24px;
  overflow-y:auto;
}
.side-brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:8px 8px 22px;
  margin-bottom:18px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.side-logo{
  width:44px;height:44px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:20px;
  box-shadow:0 6px 18px rgba(109,74,255,.35);
  flex-shrink:0;
}
.side-brand-text{
  font-size:18px;
  font-weight:800;
  color:#fff;
  letter-spacing:.5px;
  line-height:1.3;
}
.side-brand-text span{
  display:block;
  font-size:12px;
  font-weight:400;
  color:rgba(255,255,255,.45);
  letter-spacing:1px;
  margin-top:2px;
}
.side-label{
  font-size:11px;
  color:rgba(255,255,255,.4);
  text-transform:uppercase;
  letter-spacing:2px;
  margin:18px 12px 10px;
}
.side-nav{
  display:flex;
  flex-direction:column;
  gap:4px;
}
.side-link{
  display:flex;
  align-items:center;
  gap:12px;
  padding:12px 16px;
  border-radius:14px;
  color:rgba(255,255,255,.68);
  font-size:15px;
  font-weight:500;
  position:relative;
  background:transparent;
  transition:var(--transition);
}
.side-link i{
  width:20px;
  text-align:center;
  font-size:16px;
  opacity:.85;
}
.side-link:hover{
  background:rgba(255,255,255,.06);
  color:#fff;
  transform:translateX(4px);
}
.side-link.active{
  background:linear-gradient(135deg,var(--primary),#845eff);
  color:#fff;
  box-shadow:0 8px 24px rgba(109,74,255,.32);
}
.side-link.active::before{
  content:"";
  position:absolute;
  left:-22px;
  top:50%;
  transform:translateY(-50%);
  width:4px;height:24px;
  border-radius:4px;
  background:var(--accent);
}
.side-foot{
  margin-top:auto;
  padding:16px 14px;
  border-radius:16px;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.06);
}
.side-foot-text{
  font-size:13px;
  color:rgba(255,255,255,.55);
}
.side-foot-tag{
  color:var(--accent);
  font-weight:600;
  font-size:17px;
  display:block;
  margin-top:4px;
}

/* 移动端顶栏 */
.mobile-top{
  display:none;
  background:rgba(26,29,46,.96);
  backdrop-filter:blur(8px);
  padding:14px 20px;
  align-items:center;
  justify-content:space-between;
  position:sticky;
  top:0;
  z-index:900;
}
.mobile-menu-btn{
  background:none;border:none;
  color:#fff;
  font-size:20px;
  cursor:pointer;
  width:40px;height:40px;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
}
.mobile-menu-btn:hover{background:rgba(255,255,255,.1);}
.mobile-brand{
  color:#fff;
  font-weight:700;
  font-size:16px;
  display:flex;align-items:center;gap:8px;
}
.mobile-brand i{color:var(--accent);}
.mobile-cta{
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;
  padding:7px 14px;
  border-radius:20px;
  font-size:13px;
  font-weight:600;
}
.mobile-cta:hover{opacity:.9;}
.mobile-nav{
  display:none;
  background:var(--bg-deep);
  padding:10px 20px 18px;
  flex-wrap:wrap;
  gap:6px;
}
.mobile-nav a{
  color:rgba(255,255,255,.75);
  font-size:14px;
  font-weight:500;
  padding:8px 14px;
  border-radius:10px;
  background:rgba(255,255,255,.05);
}
.mobile-nav a.active{
  background:var(--primary);
  color:#fff;
}
.mobile-nav.open{display:flex;}

/* 页面横幅 */
.page-hero{
  position:relative;
  padding:80px 0 64px;
  overflow:hidden;
  background:var(--bg-deep) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(120deg,rgba(26,29,46,.92) 30%,rgba(109,74,255,.62) 70%,rgba(255,122,89,.45));
}
.page-hero .container{position:relative;z-index:2;}
.crumb{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(6px);
  padding:7px 16px;
  border-radius:30px;
  font-size:13px;
  color:rgba(255,255,255,.78);
  margin-bottom:22px;
}
.crumb a:hover{color:#fff;}
.crumb i{font-size:10px;opacity:.6;}
.hero-title{
  font-size:44px;
  color:#fff;
  font-weight:800;
  line-height:1.25;
  margin-bottom:16px;
  letter-spacing:.5px;
}
.hero-title em{
  font-style:normal;
  background:linear-gradient(90deg,#ffd7a8,#ff9a76);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero-desc{
  font-size:17px;
  color:rgba(255,255,255,.75);
  max-width:640px;
  margin-bottom:30px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.btn-primary,.btn-outline{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 30px;
  border-radius:40px;
  font-size:15px;font-weight:600;
  transition:var(--transition);
  border:none;cursor:pointer;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),#845eff);
  color:#fff;
  box-shadow:0 10px 26px rgba(109,74,255,.35);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 34px rgba(109,74,255,.45);
}
.btn-outline{
  background:rgba(255,255,255,.12);
  color:#fff;
  border:1px solid rgba(255,255,255,.24);
  backdrop-filter:blur(6px);
}
.btn-outline:hover{
  background:rgba(255,255,255,.2);
  transform:translateY(-2px);
}
.page-meta{
  display:flex;
  gap:22px;
  margin-top:34px;
  flex-wrap:wrap;
  color:rgba(255,255,255,.6);
  font-size:14px;
}
.page-meta span{display:flex;align-items:center;gap:7px;}

/* 板块 */
.section{padding:var(--space-lg) 0;}
.section-alt{background:var(--surface);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:30px;
  margin-bottom:44px;
  flex-wrap:wrap;
}
.section-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--primary-light);
  color:var(--primary-dark);
  font-size:12px;
  font-weight:700;
  letter-spacing:1px;
  padding:7px 16px;
  border-radius:30px;
  margin-bottom:14px;
}
.section-title{
  font-size:32px;
  font-weight:800;
  line-height:1.3;
  letter-spacing:.3px;
}
.section-title em{
  font-style:normal;
  color:var(--primary);
}
.section-desc{
  font-size:15px;
  color:var(--text-weak);
  max-width:600px;
  margin-top:8px;
  line-height:1.8;
}
.section-link{
  color:var(--primary);
  font-size:14px;
  font-weight:600;
  display:inline-flex;align-items:center;gap:6px;
  white-space:nowrap;
  padding-bottom:4px;
  border-bottom:2px solid transparent;
}
.section-link:hover{border-color:var(--primary);gap:10px;}

/* 分类卡片 */
.cat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
}
.cat-card{
  background:var(--surface);
  border-radius:var(--radius-lg);
  border:1px solid var(--border);
  overflow:hidden;
  transition:var(--transition);
  position:relative;
  box-shadow:var(--shadow-sm);
}
.cat-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:var(--primary);
}
.cat-cover{
  height:150px;
  overflow:hidden;
  position:relative;
}
.cat-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.cat-card:hover .cat-cover img{transform:scale(1.08);}
.cat-cover::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(20,20,40,.25));
}
.cat-body{
  padding:20px 20px 24px;
  position:relative;
}
.cat-icon{
  width:44px;height:44px;
  border-radius:14px;
  background:var(--primary-light);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;
  margin-top:-38px;
  margin-bottom:12px;
  position:relative;
  z-index:2;
  border:3px solid #fff;
  box-shadow:var(--shadow-sm);
}
.cat-body h3{font-size:18px;font-weight:700;margin-bottom:8px;}
.cat-body p{
  font-size:13px;
  color:var(--text-weak);
  line-height:1.7;
  margin-bottom:14px;
}
.cat-tag{
  display:inline-block;
  font-size:12px;
  color:var(--primary);
  font-weight:600;
  background:var(--primary-light);
  border-radius:20px;
  padding:4px 12px;
}

/* 攻略列表 */
.guide-list{
  display:flex;
  flex-direction:column;
  gap:18px;
}
.guide-item{
  display:grid;
  grid-template-columns:230px 1fr auto;
  gap:24px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:18px;
  transition:var(--transition);
  align-items:center;
  box-shadow:var(--shadow-sm);
}
.guide-item:hover{
  border-color:var(--primary);
  box-shadow:var(--shadow-md);
  transform:translateX(6px);
}
.guide-cover{
  height:130px;
  border-radius:var(--radius-md);
  overflow:hidden;
}
.guide-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.guide-item:hover .guide-cover img{transform:scale(1.06);}
.guide-info{min-width:0;}
.guide-meta{
  display:flex;align-items:center;gap:12px;
  font-size:12px;
  color:var(--text-light);
  margin-bottom:10px;
  flex-wrap:wrap;
}
.guide-tag{
  background:var(--primary-light);
  color:var(--primary-dark);
  padding:4px 12px;
  border-radius:20px;
  font-weight:600;
  font-size:12px;
}
.guide-tag.hot{
  background:var(--accent-light);
  color:var(--accent);
}
.guide-info h3{
  font-size:18px;
  font-weight:700;
  margin-bottom:8px;
  line-height:1.4;
  transition:var(--transition);
}
.guide-item:hover .guide-info h3{color:var(--primary);}
.guide-info p{
  font-size:14px;
  color:var(--text-weak);
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.guide-more{
  display:flex;align-items:center;gap:6px;
  color:var(--primary);
  font-size:14px;font-weight:600;
  padding:10px 16px;
  border-radius:30px;
  border:1px solid var(--border);
  white-space:nowrap;
}
.guide-item:hover .guide-more{
  background:var(--primary);
  color:#fff;
  border-color:var(--primary);
}

/* 流程 */
.process-section{
  background:var(--bg-deep) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  position:relative;
  color:#fff;
}
.process-section::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(130deg,rgba(26,29,46,.95) 25%,rgba(109,74,255,.75));
}
.process-section .container{position:relative;z-index:2;}
.process-section .section-title{color:#fff;}
.process-section .section-desc{color:rgba(255,255,255,.7);}
.process-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:18px;
}
.process-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-lg);
  padding:28px 24px;
  text-align:center;
  backdrop-filter:blur(4px);
  transition:var(--transition);
  position:relative;
}
.process-card:hover{
  background:rgba(255,255,255,.12);
  transform:translateY(-5px);
}
.process-num{
  width:54px;height:54px;
  margin:0 auto 18px;
  border-radius:18px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:800;
  box-shadow:0 10px 25px rgba(109,74,255,.4);
}
.process-card h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.process-card p{font-size:13px;color:rgba(255,255,255,.65);line-height:1.7;}
.process-step{
  position:absolute;
  top:24px;right:24px;
  font-size:11px;
  color:rgba(255,255,255,.3);
  letter-spacing:1px;
}

/* 数据 */
.stats-wrap{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.stat-card{
  text-align:center;
  padding:34px 20px;
  background:var(--surface);
  border-radius:var(--radius-lg);
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
  transition:var(--transition);
  position:relative;
  overflow:hidden;
}
.stat-card::after{
  content:"";
  position:absolute;
  bottom:-40px;left:50%;
  transform:translateX(-50%);
  width:120px;height:120px;
  border-radius:50%;
  background:var(--primary-light);
  opacity:.5;
}
.stat-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
}
.stat-icon{
  width:48px;height:48px;
  margin:0 auto 18px;
  border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;
  color:var(--primary);
  background:var(--primary-light);
}
.stat-num{
  font-size:38px;font-weight:800;
  color:var(--text);
  line-height:1.2;
  letter-spacing:-1px;
}
.stat-num em{font-style:normal;color:var(--primary);}
.stat-label{
  font-size:14px;
  color:var(--text-weak);
  margin-top:6px;
}

/* 图文专区 */
.feature-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:30px;
}
.feature-card{
  background:var(--surface);
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
  transition:var(--transition);
}
.feature-card:hover{
  box-shadow:var(--shadow-md);
  transform:translateY(-4px);
}
.feature-cover{
  height:220px;
  overflow:hidden;
  position:relative;
}
.feature-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.feature-card:hover .feature-cover img{transform:scale(1.05);}
.feature-cover::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 50%,rgba(20,22,40,.35));
  z-index:1;
}
.feature-badge{
  position:absolute;
  top:18px;left:18px;
  z-index:2;
  background:rgba(255,255,255,.92);
  color:var(--primary-dark);
  font-size:12px;
  font-weight:700;
  padding:6px 14px;
  border-radius:24px;
  box-shadow:var(--shadow-sm);
  backdrop-filter:blur(4px);
}
.feature-body{padding:26px 26px 30px;}
.feature-body h3{font-size:21px;font-weight:700;margin-bottom:12px;}
.feature-body p{font-size:14px;color:var(--text-weak);line-height:1.8;margin-bottom:18px;}
.feature-list{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.feature-list li{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--text);
}
.feature-list li i{
  color:var(--primary);
  font-size:12px;
}

/* FAQ */
.faq-wrap{
  max-width:860px;
  margin:0 auto;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.faq-item{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-md);
  overflow:hidden;
  transition:var(--transition);
  box-shadow:var(--shadow-sm);
}
.faq-item:hover{border-color:var(--primary);}
.faq-question{
  padding:20px 24px;
  font-size:16px;
  font-weight:600;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  background:none;
  border:none;
  width:100%;
  text-align:left;
  color:var(--text);
}
.faq-question:hover{color:var(--primary);}
.faq-question i{
  font-size:14px;
  color:var(--primary);
  transition:transform .3s ease;
  flex-shrink:0;
}
.faq-item.active .faq-question i{transform:rotate(45deg);}
.faq-answer{
  padding:0 24px;
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease,padding .35s ease;
  color:var(--text-weak);
  font-size:14px;
  line-height:1.8;
}
.faq-item.active .faq-answer{
  padding:0 24px 20px;
  max-height:220px;
}

/* CTA */
.cta-banner{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  padding:52px 50px;
  background:linear-gradient(120deg,var(--primary),#845eff 45%,var(--accent));
  text-align:center;
  box-shadow:var(--shadow-lg);
}
.cta-banner::before{
  content:"";
  position:absolute;
  top:-50%;right:-30%;
  width:400px;height:400px;
  border-radius:50%;
  background:rgba(255,255,255,.12);
}
.cta-banner::after{
  content:"";
  position:absolute;
  bottom:-60%;left:-20%;
  width:350px;height:350px;
  border-radius:50%;
  background:rgba(255,255,255,.08);
}
.cta-banner .container{position:relative;z-index:2;}
.cta-title{
  font-size:30px;
  font-weight:800;
  color:#fff;
  margin-bottom:12px;
}
.cta-desc{
  font-size:16px;
  color:rgba(255,255,255,.82);
  max-width:560px;
  margin:0 auto 28px;
}
.cta-btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  background:#fff;
  color:var(--primary-dark);
  font-size:15px;
  font-weight:700;
  padding:15px 36px;
  border-radius:40px;
  box-shadow:0 12px 30px rgba(0,0,0,.15);
  transition:var(--transition);
}
.cta-btn:hover{
  transform:translateY(-2px) scale(1.02);
  box-shadow:0 18px 40px rgba(0,0,0,.2);
}

/* 页脚 */
.site-footer{
  background:var(--bg-deep);
  color:rgba(255,255,255,.6);
  margin-top:auto;
  padding:60px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:48px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand{}
.footer-logo{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:20px;
  font-weight:800;
  color:#fff;
  margin-bottom:16px;
}
.footer-logo i{
  width:40px;height:40px;
  border-radius:12px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  display:flex;align-items:center;justify-content:center;
  font-size:16px;
}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  max-width:400px;
}
.footer-col h4{
  color:#fff;
  font-size:16px;
  font-weight:600;
  margin-bottom:18px;
}
.footer-col ul{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-col a{
  font-size:14px;
  color:rgba(255,255,255,.55);
  transition:var(--transition);
}
.footer-col a:hover{color:#fff;padding-left:5px;}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:20px 0;
  flex-wrap:wrap;
  gap:10px;
  font-size:13px;
  color:rgba(255,255,255,.35);
}
.footer-bottom .domain{
  font-family:monospace;
  background:rgba(255,255,255,.05);
  padding:3px 10px;
  border-radius:6px;
}

/* 焦点状态 */
a:focus-visible,button:focus-visible{
  outline:3px solid var(--primary);
  outline-offset:2px;
}

/* 响应式 */
@media (max-width:1200px){
  .cat-grid{grid-template-columns:repeat(2,1fr);}
  .guide-item{grid-template-columns:200px 1fr;}
  .guide-more{display:none;}
}
@media (max-width:1024px){
  :root{--space-lg:72px;--space-md:46px;}
  .side-nav-wrap{width:220px;padding:22px 16px;}
  .main-shell{margin-left:220px;}
  .container{padding:0 28px;}
  .process-grid{grid-template-columns:repeat(2,1fr);}
  .stats-wrap{grid-template-columns:repeat(2,1fr);}
  .feature-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .side-nav-wrap{display:none;}
  .main-shell{margin-left:0;}
  .mobile-top{display:flex;}
  .container{padding:0 20px;}
  .page-hero{padding:56px 0 44px;}
  .hero-title{font-size:32px;}
  .section{padding:52px 0;}
  .section-title{font-size:26px;}
  .cat-grid{grid-template-columns:1fr;}
  .guide-item{grid-template-columns:1fr;}
  .guide-cover{height:160px;}
  .stats-wrap{grid-template-columns:1fr 1fr;gap:14px;}
  .stat-num{font-size:30px;}
  .process-grid{grid-template-columns:1fr 1fr;gap:14px;}
  .process-card{padding:20px 16px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-banner{padding:40px 24px;}
  .cta-title{font-size:24px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .hero-title{font-size:26px;}
  .hero-desc{font-size:14px;}
  .hero-actions .btn-primary,.hero-actions .btn-outline{width:100%;justify-content:center;}
  .page-meta{flex-direction:column;gap:6px;}
  .cat-grid,.process-grid,.stats-wrap{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .footer-bottom{flex-direction:column;text-align:center;}
}

/* roulang page: category3 */
:root {
  --primary: #6C5CE7;
  --primary-light: #8B7CF7;
  --primary-dark: #4B3FBF;
  --accent: #F5A623;
  --accent-light: #FFD57A;
  --bg: #F5F6FA;
  --bg-deep: #171B2E;
  --bg-sidebar: #1B1F38;
  --surface: #FFFFFF;
  --text: #1E2A3A;
  --text-weak: #6B7A90;
  --border: #E8EBF2;
  --success: #22C55E;
  --danger: #EF4444;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(23,27,46,.06);
  --shadow-md: 0 8px 24px rgba(23,27,46,.08);
  --shadow-lg: 0 16px 40px rgba(23,27,46,.12);
  --font: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  --transition: all .25s ease;
}
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  min-height: 100vh;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul,ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input,select,textarea { font-family: inherit; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Layout ===== */
.layout { display: flex; min-height: 100vh; }

/* ===== Sidebar ===== */
.sidebar {
  width: 260px;
  position: fixed;
  left: 0; top: 0; bottom: 0;
  background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-sidebar) 100%);
  padding: 28px 18px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  box-shadow: 4px 0 20px rgba(0,0,0,.08);
  transition: transform .3s ease;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px 24px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  margin-bottom: 20px;
}
.brand-icon {
  width: 42px; height: 42px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  color: #fff;
  box-shadow: 0 6px 16px rgba(108,92,231,.35);
}
.brand-name {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .02em;
  line-height: 1.3;
}
.brand-tag {
  font-size: 12px;
  color: rgba(255,255,255,.5);
  letter-spacing: .08em;
  margin-top: 2px;
}
.side-nav { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.side-nav .nav-label {
  font-size: 12px;
  color: rgba(255,255,255,.4);
  text-transform: uppercase;
  letter-spacing: .12em;
  padding: 8px 12px 4px;
}
.side-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,.7);
  transition: var(--transition);
  position: relative;
}
.side-link i { width: 20px; text-align: center; font-size: 16px; }
.side-link:hover {
  background: rgba(255,255,255,.06);
  color: #fff;
  transform: translateX(3px);
}
.side-link.active {
  background: linear-gradient(135deg, rgba(108,92,231,.25), rgba(108,92,231,.08));
  color: #fff;
  font-weight: 600;
}
.side-link.active::before {
  content: '';
  position: absolute;
  left: -18px; top: 50%;
  transform: translateY(-50%);
  width: 4px; height: 24px;
  background: var(--accent);
  border-radius: 0 4px 4px 0;
}
.side-footer {
  margin-top: auto;
  padding: 16px 12px 4px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.side-status {
  display: flex; align-items: center; gap: 10px;
  background: rgba(255,255,255,.04);
  border-radius: 12px;
  padding: 12px 14px;
}
.status-dot {
  width: 8px; height: 8px;
  background: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(34,197,94,.6);
}
.status-text { font-size: 13px; color: rgba(255,255,255,.6); }

/* ===== Main Area ===== */
.main-area { flex: 1; margin-left: 260px; min-height: 100vh; display: flex; flex-direction: column; }

/* ===== Mobile Header ===== */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(23,27,46,.95);
  backdrop-filter: blur(10px);
  padding: 14px 20px;
  align-items: center;
  justify-content: space-between;
}
.mobile-header .m-brand {
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}
.mobile-header .m-brand i {
  color: var(--accent);
}
.menu-btn {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: rgba(255,255,255,.1);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 18px;
  transition: var(--transition);
}
.menu-btn:hover { background: rgba(255,255,255,.18); }

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: 90px 0 80px;
  background: linear-gradient(135deg, rgba(23,27,46,.92) 0%, rgba(108,92,231,.72) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}
.page-hero::after {
  content: '';
  position: absolute;
  right: -60px; bottom: -60px;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(245,166,35,.25) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,.65);
  margin-bottom: 20px;
}
.breadcrumb a { transition: color .2s; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb i { font-size: 12px; }
.hero-content { position: relative; z-index: 2; max-width: 680px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 30px;
  padding: 6px 16px;
  font-size: 13px;
  color: var(--accent-light);
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}
.hero-badge i { font-size: 12px; }
.page-hero h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: .02em;
}
.page-hero h1 span { color: var(--accent); }
.hero-desc {
  font-size: 16px;
  color: rgba(255,255,255,.85);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  border: 2px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  color: #1E2A3A;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(245,166,35,.3);
}
.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,.4);
  color: #fff;
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}
.btn-dark {
  background: var(--primary);
  color: #fff;
}
.btn-dark:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(108,92,231,.3);
}

/* ===== Section ===== */
.section { padding: 80px 0; }
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(108,92,231,.1);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 30px;
  margin-bottom: 14px;
}
.section-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 12px;
  color: var(--text);
}
.section-subtitle {
  font-size: 15px;
  color: var(--text-weak);
  line-height: 1.7;
}

/* ===== Event Types ===== */
.event-types { padding: 80px 0; }
.types-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.type-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 36px 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.type-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}
.type-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.type-card:hover::before { opacity: 1; }
.type-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
  margin-bottom: 20px;
  box-shadow: 0 8px 16px rgba(108,92,231,.25);
}
.type-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.type-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  margin-bottom: 16px;
}
.type-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  background: var(--bg);
  color: var(--text-weak);
  border: 1px solid var(--border);
}
.tag-primary {
  background: rgba(108,92,231,.08);
  color: var(--primary);
  border-color: rgba(108,92,231,.15);
}
.tag-accent {
  background: rgba(245,166,35,.1);
  color: #B7791F;
  border-color: rgba(245,166,35,.2);
}
.tag-success {
  background: rgba(34,197,94,.1);
  color: #15803D;
  border-color: rgba(34,197,94,.2);
}

/* ===== Hot Events ===== */
.hot-events {
  padding: 80px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.events-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.event-card {
  background: var(--bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.event-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.event-cover {
  position: relative;
  height: 200px;
  overflow: hidden;
}
.event-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.event-card:hover .event-cover img { transform: scale(1.05); }
.event-status {
  position: absolute;
  top: 14px; left: 14px;
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  backdrop-filter: blur(6px);
}
.event-status.live { background: rgba(34,197,94,.9); color: #fff; }
.event-status.upcoming { background: rgba(245,166,35,.9); color: #1E2A3A; }
.event-status.open { background: rgba(108,92,231,.85); color: #fff; }
.event-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.event-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}
.event-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  margin-bottom: 14px;
  flex: 1;
}
.event-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-weak);
  border-top: 1px dashed var(--border);
  padding-top: 14px;
  margin-bottom: 14px;
}
.event-meta i { margin-right: 4px; color: var(--primary); }
.event-btn {
  align-self: flex-start;
  padding: 9px 22px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  background: var(--primary);
  color: #fff;
  transition: var(--transition);
}
.event-btn:hover { background: var(--primary-dark); transform: translateY(-2px); }

/* ===== Steps ===== */
.steps-section { padding: 80px 0; }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  counter-reset: step;
}
.step-item {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 24px 28px;
  text-align: center;
  transition: var(--transition);
  counter-increment: step;
}
.step-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.step-num {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  box-shadow: 0 8px 20px rgba(108,92,231,.3);
  position: relative;
}
.step-num::after {
  content: '';
  position: absolute;
  top: 50%; left: 100%;
  width: 28px; height: 1px;
  border-top: 2px dashed var(--border);
  transform: translateY(-50%);
}
.step-item:last-child .step-num::after { display: none; }
.step-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}
.step-item p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.6;
}

/* ===== Stats ===== */
.stats-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--bg-deep) 0%, var(--bg-sidebar) 100%);
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(108,92,231,.2) 0%, transparent 70%);
  border-radius: 50%;
}
.stats-section .section-title { color: #fff; }
.stats-section .section-subtitle { color: rgba(255,255,255,.6); }
.stats-section .section-tag { background: rgba(255,255,255,.1); color: var(--accent-light); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 50px;
  position: relative;
  z-index: 2;
}
.stat-item {
  text-align: center;
  padding: 30px 20px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  transition: var(--transition);
}
.stat-item:hover {
  background: rgba(255,255,255,.1);
  transform: translateY(-4px);
}
.stat-num {
  font-size: 40px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}
.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,.7);
  margin-top: 8px;
}
.stat-desc {
  font-size: 12px;
  color: rgba(255,255,255,.4);
  margin-top: 4px;
}

/* ===== FAQ ===== */
.faq-section { padding: 80px 0; }
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(108,92,231,.3); box-shadow: var(--shadow-sm); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  background: none;
  transition: var(--transition);
  text-align: left;
}
.faq-question i {
  color: var(--primary);
  transition: transform .3s ease;
  flex-shrink: 0;
}
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-answer-inner {
  padding: 0 28px 24px;
  font-size: 15px;
  color: var(--text-weak);
  line-height: 1.8;
}
.faq-item.active .faq-answer { max-height: 300px; }

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
  position: relative;
  background: linear-gradient(135deg, rgba(23,27,46,.88) 0%, rgba(108,92,231,.82) 100%), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  text-align: center;
  color: #fff;
}
.cta-inner { max-width: 700px; margin: 0 auto; position: relative; z-index: 2; }
.cta-inner h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
}
.cta-inner p {
  font-size: 16px;
  color: rgba(255,255,255,.8);
  margin-bottom: 32px;
  line-height: 1.8;
}
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255,255,255,.7);
  padding: 60px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}
.footer-logo i { color: var(--accent); }
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,.55);
  max-width: 360px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 28px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,.6);
  transition: var(--transition);
}
.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,.4);
}
.domain {
  font-family: 'Courier New', monospace;
  background: rgba(255,255,255,.06);
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 13px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); box-shadow: 0 0 40px rgba(0,0,0,.3); }
  .main-area { margin-left: 0; }
  .mobile-header { display: flex; }
  .types-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .page-hero { padding: 60px 0 50px; }
  .page-hero h1 { font-size: 30px; }
  .hero-desc { font-size: 15px; }
  .section { padding: 56px 0; }
  .event-types { padding: 56px 0; }
  .hot-events { padding: 56px 0; }
  .steps-section { padding: 56px 0; }
  .stats-section { padding: 56px 0; }
  .faq-section { padding: 56px 0; }
  .cta-section { padding: 56px 0; }
  .section-title { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-btns { width: 100%; }
  .events-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .types-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .step-num::after { display: none; }
  .cta-inner h2 { font-size: 28px; }
  .page-hero h1 { font-size: 26px; }
  .hero-btns .btn { width: 100%; justify-content: center; }
  .cta-btns .btn { width: 100%; justify-content: center; }
}