/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #5B6CF0;
  --primary-dark: #4050D6;
  --primary-soft: #EDF0FF;
  --accent: #F59E0B;
  --accent-soft: #FFF4E0;
  --bg: #F5F7FB;
  --surface: #FFFFFF;
  --text: #1C2333;
  --muted: #6B7280;
  --border: #E5E9F2;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(28,35,51,.06);
  --shadow-md: 0 8px 30px rgba(28,35,51,.08);
  --shadow-lg: 0 16px 40px rgba(28,35,51,.12);
  --transition: .25s ease;
  --container: 1200px;
}

/* ===== 基础 Reset ===== */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
button, input { font-family: inherit; }
h1, h2, h3, h4, h5 { margin: 0; font-weight: 700; line-height: 1.3; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

/* ===== 容器 ===== */
.grid-container {
  max-width: var(--container);
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 72px;
}
.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.header-logo {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.header-logo a {
  font-size: 1.42rem;
  font-weight: 800;
  letter-spacing: 1px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}
.header-logo a:hover { opacity: .85; }
.header-nav {
  display: flex;
  gap: 6px;
  align-items: center;
}
.header-nav-left { margin-right: auto; }
.header-nav-right { margin-left: auto; }
.header-nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 50px;
  font-size: .92rem;
  font-weight: 500;
  color: var(--muted);
  transition: all var(--transition);
}
.header-nav a:hover {
  color: var(--primary);
  background: var(--primary-soft);
}
.header-nav a.active {
  color: var(--primary);
  background: var(--primary-soft);
  font-weight: 600;
}
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border: none;
  background: none;
  cursor: pointer;
  position: absolute;
  right: 16px;
  top: 12px;
  z-index: 1100;
  padding: 0;
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all .3s;
}
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  padding: 16px;
  z-index: 1090;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: .95rem;
  font-weight: 500;
  color: var(--text);
}
.mobile-menu a:hover,
.mobile-menu a.active {
  background: var(--primary-soft);
  color: var(--primary);
}

/* ===== Hero 首屏 ===== */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: -2;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(78deg, rgba(18,22,40,.9) 15%, rgba(18,22,40,.35) 72%);
  z-index: -1;
}
.hero-content {
  max-width: 720px;
  padding: 90px 0;
  color: #fff;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 50px;
  font-size: .84rem;
  font-weight: 500;
  backdrop-filter: blur(8px);
  margin-bottom: 24px;
}
.hero h1 {
  font-size: 3.2rem;
  line-height: 1.16;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.hero p {
  font-size: 1.08rem;
  color: rgba(255,255,255,.82);
  margin-bottom: 30px;
  max-width: 560px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 50px;
  font-size: .95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(91,108,240,.35);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(91,108,240,.45);
}
.btn-primary:focus-visible {
  outline: 3px solid rgba(91,108,240,.4);
  outline-offset: 2px;
}
.btn-ghost {
  background: rgba(255,255,255,.12);
  color: #fff;
  border: 1px solid rgba(255,255,255,.3);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover {
  background: rgba(255,255,255,.22);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-light {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 4px 14px rgba(0,0,0,.12);
}
.btn-light:hover {
  background: var(--primary-soft);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(91,108,240,.18);
}

/* ===== 板块通用 ===== */
.section { padding: 90px 0; }
.section-alt { background: #fff; }
.section-header {
  max-width: 680px;
  margin: 0 auto 56px;
  text-align: center;
}
.section-tag {
  display: inline-block;
  padding: 6px 18px;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 50px;
  font-size: .82rem;
  font-weight: 600;
  margin-bottom: 14px;
}
.section-header h2 { font-size: 2.1rem; }
.section-header p { color: var(--muted); margin-top: 10px; font-size: .98rem; }

/* ===== 核心说明 ===== */
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 28px;
  height: 100%;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: var(--primary);
  transition: height .4s ease;
}
.feature-card:hover::after { height: 100%; }
.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  margin-bottom: 20px;
  background: var(--primary-soft);
  color: var(--primary);
}
.feature-card:nth-child(2) .feature-icon {
  background: var(--accent-soft);
  color: var(--accent);
}
.feature-card h3 { font-size: 1.16rem; margin-bottom: 10px; }
.feature-card p { color: var(--muted); font-size: .94rem; }

/* ===== 分类入口 ===== */
.cat-grid .cell { margin-bottom: 24px; }
.category-card {
  display: block;
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  height: 100%;
  transition: all var(--transition);
}
.category-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: rgba(91,108,240,.3);
}
.card-img {
  height: 220px;
  overflow: hidden;
  position: relative;
}
.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.category-card:hover .card-img img { transform: scale(1.06); }
.card-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(18,22,40,.35), transparent 60%);
}
.card-body { padding: 26px; }
.cat-badge {
  display: inline-block;
  padding: 5px 14px;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 50px;
  font-size: .78rem;
  font-weight: 600;
  margin-bottom: 12px;
}
.card-body h3 { font-size: 1.25rem; margin-bottom: 8px; }
.card-body p { color: var(--muted); font-size: .92rem; }
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: .88rem;
  font-weight: 600;
  color: var(--primary);
}
.card-link i { transition: transform .25s ease; }
.category-card:hover .card-link i { transform: translateX(4px); }

/* ===== 资讯列表 ===== */
.news-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.info-item {
  display: grid;
  grid-template-columns: 130px 1fr 170px;
  gap: 16px;
  align-items: center;
  padding: 20px 26px;
  border-bottom: 1px solid var(--border);
  transition: background .2s ease;
}
.info-item:last-child { border-bottom: none; }
.info-item:hover { background: var(--primary-soft); }
.info-cat {
  justify-self: start;
  display: inline-block;
  font-size: .8rem;
  padding: 5px 14px;
  border-radius: 50px;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
  white-space: nowrap;
}
.info-title {
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.5;
}
.info-desc {
  color: var(--muted);
  font-size: .88rem;
  grid-column: 2;
  margin-top: -8px;
}
.info-time {
  color: var(--muted);
  font-size: .84rem;
  text-align: right;
  white-space: nowrap;
}
.no-data {
  padding: 48px 24px;
  text-align: center;
  color: var(--muted);
  font-size: .95rem;
}

/* ===== 数据统计 ===== */
.section-stats {
  position: relative;
  padding: 80px 0;
  overflow: hidden;
  isolation: isolate;
}
.stats-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: -2;
}
.section-stats::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(20,28,52,.9), rgba(31,41,82,.82));
  z-index: -1;
}
.stats-grid .cell { margin-bottom: 20px; }
.stat-card {
  text-align: center;
  color: #fff;
  padding: 26px 16px;
  border-radius: var(--radius);
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  backdrop-filter: blur(6px);
  transition: all var(--transition);
}
.stat-card:hover {
  background: rgba(255,255,255,.12);
  transform: translateY(-3px);
}
.stat-num {
  display: block;
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: 1px;
  line-height: 1.2;
}
.stat-label {
  font-size: .95rem;
  opacity: .8;
  margin-top: 4px;
  display: block;
}

/* ===== 热门推荐 ===== */
.featured-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 22px;
  border: 1px solid var(--border);
  height: 100%;
  transition: all var(--transition);
}
.featured-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.featured-img {
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 18px;
  aspect-ratio: 16 / 9;
}
.featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.featured-card:hover .featured-img img { transform: scale(1.04); }
.featured-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: .76rem;
  font-weight: 600;
}
.badge-blue { background: var(--primary-soft); color: var(--primary); }
.badge-orange { background: var(--accent-soft); color: var(--accent); }
.featured-card h3 { font-size: 1.06rem; margin-bottom: 8px; }
.featured-card p { font-size: .9rem; color: var(--muted); }

/* ===== FAQ ===== */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 28px;
  margin-bottom: 16px;
  transition: all var(--transition);
}
.faq-item:hover {
  box-shadow: var(--shadow-sm);
  border-color: rgba(91,108,240,.2);
}
.faq-item h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.faq-item h3::before {
  content: '\f059';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  color: var(--primary);
  font-size: .95rem;
}
.faq-item p { color: var(--muted); font-size: .94rem; padding-left: 28px; }

/* ===== CTA ===== */
.cta-section {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.cta-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: -2;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(18,24,50,.92), rgba(38,45,85,.78));
  z-index: -1;
}
.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 90px 24px;
}
.cta-inner h2 {
  font-size: 2.2rem;
  color: #fff;
  margin-bottom: 14px;
}
.cta-inner p {
  color: rgba(255,255,255,.82);
  margin-bottom: 28px;
  font-size: 1.02rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #141A2E;
  color: rgba(255,255,255,.65);
  padding-top: 64px;
  font-size: .92rem;
}
.footer-grid { padding-bottom: 40px; }
.footer-brand .footer-logo {
  font-size: 1.35rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: 1px;
  background: linear-gradient(135deg, #fff, #cfd6ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-brand p {
  color: rgba(255,255,255,.55);
  line-height: 1.7;
  margin-bottom: 20px;
}
.footer-social {
  display: flex;
  gap: 10px;
}
.footer-social a {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,.08);
  color: rgba(255,255,255,.7);
  font-size: .9rem;
  transition: all var(--transition);
}
.footer-social a:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}
.site-footer h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 16px;
  font-weight: 600;
}
.site-footer .footer-links a {
  display: block;
  padding: 4px 0;
  color: rgba(255,255,255,.55);
  font-size: .9rem;
}
.site-footer .footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-info p {
  color: rgba(255,255,255,.45);
  font-size: .86rem;
  margin-bottom: 8px;
  line-height: 1.7;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  text-align: center;
  padding: 20px;
  font-size: .84rem;
  color: rgba(255,255,255,.4);
}

/* ===== Foundation 覆盖 ===== */
.button { margin-bottom: 0; }
.grid-margin-x { margin-left: -12px; margin-right: -12px; }
.grid-margin-x > .cell { padding-left: 12px; padding-right: 12px; }

/* ===== 响应式断点 ===== */
@media (max-width: 1024px) {
  .hero { min-height: 540px; }
  .hero h1 { font-size: 2.6rem; }
  .header-nav a { padding: 7px 12px; font-size: .86rem; }
  .info-item { grid-template-columns: 110px 1fr 140px; padding: 16px 20px; }
  .section { padding: 70px 0; }
}

@media (max-width: 768px) {
  .site-header { height: 64px; }
  .header-inner { height: 64px; padding: 0 16px; }
  .header-logo { position: relative; left: auto; transform: none; margin: 0 auto; }
  .header-nav { display: none; }
  .menu-toggle { display: flex; }
  .hero { min-height: 480px; }
  .hero-content { padding: 60px 0; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: .96rem; }
  .hero-actions .btn { padding: 11px 24px; }
  .section { padding: 56px 0; }
  .section-header { margin-bottom: 32px; }
  .section-header h2 { font-size: 1.7rem; }
  .feature-card { padding: 26px 22px; }
  .card-img { height: 190px; }
  .info-item { grid-template-columns: 1fr; gap: 8px; padding: 16px; }
  .info-cat { justify-self: start; }
  .info-desc { grid-column: 1; margin-top: 0; }
  .info-time { text-align: left; }
  .stat-num { font-size: 2.2rem; }
  .cta-inner { padding: 64px 20px; }
  .cta-inner h2 { font-size: 1.7rem; }
  .footer-grid { padding-bottom: 24px; }
  .footer-grid .cell { margin-bottom: 28px; }
}

@media (max-width: 520px) {
  .hero h1 { font-size: 1.65rem; }
  .hero-badge { font-size: .78rem; padding: 5px 14px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .section-header h2 { font-size: 1.45rem; }
  .cat-grid .cell { margin-bottom: 16px; }
  .card-body { padding: 18px; }
  .stat-num { font-size: 1.9rem; }
  .faq-item { padding: 20px; }
  .faq-item p { padding-left: 0; }
  .cta-inner h2 { font-size: 1.5rem; }
  .btn-light { width: 100%; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
    :root {
      --primary: #1e3a8a;
      --primary-dark: #13285e;
      --primary-light: #e8eeff;
      --accent: #f97316;
      --accent-dark: #e2640a;
      --bg: #f5f7fc;
      --bg-white: #ffffff;
      --bg-deep: #0f172a;
      --text: #0f172a;
      --text-light: #64748b;
      --border: #e2e8f0;
      --radius: 16px;
      --radius-sm: 10px;
      --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
      --shadow-hover: 0 18px 40px rgba(15, 23, 42, 0.15);
      --transition: all 0.3s ease;
      --space-section: 80px;
      --hero-scale: 1.02;
    }

    /* ===== 基础 Reset ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.75;
      font-size: 16px;
      -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 { font-family: inherit; border: none; background: none; cursor: pointer; }
    input, textarea { font-family: inherit; }

    /* ===== 通用容器 ===== */
    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
    .section { padding: var(--space-section) 0; }
    .section-alt { background: var(--bg-white); }

    /* ===== Header / 导航 ===== */
    .site-header {
      position: sticky; top: 0; z-index: 100;
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
      box-shadow: 0 2px 12px rgba(15,23,42,0.06);
    }
    .header-inner {
      display: flex; align-items: center; justify-content: space-between;
      height: 76px; gap: 12px;
    }
    .header-nav { display: flex; align-items: center; gap: 4px; flex: 1; }
    .header-nav-left { justify-content: flex-start; }
    .header-nav-right { justify-content: flex-end; }
    .header-nav a {
      display: inline-flex; align-items: center; gap: 8px;
      padding: 10px 16px; border-radius: 999px;
      font-size: 15px; font-weight: 500; color: var(--text-light);
      white-space: nowrap;
    }
    .header-nav a i { font-size: 13px; color: var(--primary); opacity: 0.7; }
    .header-nav a:hover {
      color: var(--primary); background: var(--primary-light);
    }
    .header-nav a.active {
      color: #fff; background: var(--primary);
      box-shadow: 0 4px 14px rgba(30,58,138,0.25);
    }
    .header-nav a.active i { color: #fff; opacity: 1; }
    .header-logo {
      display: flex; align-items: center; gap: 10px;
      flex-shrink: 0; padding: 6px 18px;
      font-size: 20px; font-weight: 800; color: var(--primary);
      letter-spacing: 0.5px;
    }
    .logo-mark {
      width: 38px; height: 38px; display: flex; align-items: center; justify-content: center;
      background: linear-gradient(135deg, var(--primary), #4f46e5);
      color: #fff; border-radius: 12px; font-size: 16px;
      box-shadow: 0 4px 12px rgba(30,58,138,0.3);
    }
    .menu-toggle {
      display: none; width: 42px; height: 42px;
      border-radius: 10px; border: 1px solid var(--border);
      background: var(--bg-white); color: var(--primary);
      font-size: 18px; align-items: center; justify-content: center;
      transition: var(--transition);
    }
    .menu-toggle:hover { background: var(--primary-light); }

    .mobile-menu {
      display: none; flex-direction: column; gap: 4px;
      padding: 16px 24px 24px; border-top: 1px solid var(--border);
      background: var(--bg-white);
    }
    .mobile-menu.is-open { display: flex; }
    .mobile-menu a {
      padding: 12px 16px; border-radius: var(--radius-sm);
      font-size: 15px; font-weight: 500; color: var(--text);
      display: flex; align-items: center; gap: 10px;
    }
    .mobile-menu a i { color: var(--primary); width: 20px; text-align: center; }
    .mobile-menu a:hover { background: var(--primary-light); color: var(--primary); }
    .mobile-menu a.active { background: var(--primary); color: #fff; }
    .mobile-menu a.active i { color: #fff; }

    /* ===== Hero / 页面横幅 ===== */
    .page-hero {
      position: relative; padding: 100px 0 110px;
      background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
      color: #fff; text-align: center; overflow: hidden;
    }
    .page-hero::before {
      content: ""; position: absolute; inset: 0;
      background: linear-gradient(135deg, rgba(15,23,42,0.86), rgba(30,58,138,0.72));
    }
    .page-hero .hero-content { position: relative; z-index: 2; max-width: 820px; margin: 0 auto; }
    .page-hero .hero-badge {
      display: inline-flex; align-items: center; gap: 8px;
      padding: 8px 20px; border-radius: 999px;
      background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.3);
      font-size: 14px; letter-spacing: 1px; margin-bottom: 24px;
      backdrop-filter: blur(4px);
    }
    .page-hero h1 {
      font-size: 48px; font-weight: 800; line-height: 1.2;
      margin-bottom: 20px; letter-spacing: 0.5px;
      text-shadow: 0 4px 20px rgba(0,0,0,0.3);
    }
    .page-hero h1 span { color: #fbbf24; }
    .page-hero p {
      font-size: 18px; line-height: 1.8; color: rgba(255,255,255,0.9);
      max-width: 640px; margin: 0 auto 36px;
    }
    .hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
    .hero-actions .btn-primary {
      display: inline-flex; align-items: center; gap: 8px;
      padding: 14px 30px; border-radius: 999px;
      background: var(--accent); color: #fff; font-size: 16px; font-weight: 600;
      box-shadow: 0 6px 20px rgba(249,115,22,0.35);
      transition: var(--transition);
    }
    .hero-actions .btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(249,115,22,0.45); }
    .hero-actions .btn-ghost {
      display: inline-flex; align-items: center; gap: 8px;
      padding: 14px 30px; border-radius: 999px;
      background: rgba(255,255,255,0.12); color: #fff; font-size: 16px; font-weight: 500;
      border: 1.5px solid rgba(255,255,255,0.4); backdrop-filter: blur(4px);
      transition: var(--transition);
    }
    .hero-actions .btn-ghost:hover { background: rgba(255,255,255,0.2); border-color: #fff; transform: translateY(-2px); }

    /* ===== 板块通用标题 ===== */
    .section-head { text-align: center; max-width: 680px; margin: 0 auto 50px; }
    .section-head .eyebrow {
      display: inline-flex; align-items: center; gap: 6px;
      padding: 6px 16px; border-radius: 999px;
      background: var(--primary-light); color: var(--primary);
      font-size: 13px; font-weight: 600; letter-spacing: 0.5px;
      margin-bottom: 14px;
    }
    .section-head h2 { font-size: 34px; font-weight: 800; color: var(--text); line-height: 1.3; margin-bottom: 12px; }
    .section-head p { font-size: 16px; color: var(--text-light); line-height: 1.7; }

    /* ===== 入口卡片区 ===== */
    .entry-grid .cell { margin-bottom: 24px; }
    .entry-card {
      background: var(--bg-white); border-radius: var(--radius);
      padding: 32px 26px; height: 100%;
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
      transition: var(--transition);
      position: relative; overflow: hidden;
    }
    .entry-card::after {
      content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      opacity: 0; transition: var(--transition);
    }
    .entry-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(30,58,138,0.15); }
    .entry-card:hover::after { opacity: 1; }
    .entry-icon {
      width: 56px; height: 56px; border-radius: 14px;
      display: flex; align-items: center; justify-content: center;
      font-size: 22px; color: #fff; margin-bottom: 20px;
      background: linear-gradient(135deg, var(--primary), #4f46e5);
      box-shadow: 0 6px 16px rgba(30,58,138,0.25);
    }
    .entry-card:nth-child(2) .entry-icon { background: linear-gradient(135deg, #f97316, #fbbf24); box-shadow: 0 6px 16px rgba(249,115,22,0.25); }
    .entry-card:nth-child(3) .entry-icon { background: linear-gradient(135deg, #10b981, #06b6d4); box-shadow: 0 6px 16px rgba(16,185,129,0.25); }
    .entry-card:nth-child(4) .entry-icon { background: linear-gradient(135deg, #8b5cf6, #6366f1); box-shadow: 0 6px 16px rgba(139,92,246,0.25); }
    .entry-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
    .entry-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; margin-bottom: 0; }
    .entry-card .card-meta {
      display: flex; gap: 6px; flex-wrap: wrap; margin-top: 18px;
    }
    .entry-card .card-meta span {
      font-size: 12px; padding: 4px 12px; border-radius: 999px;
      background: var(--bg); color: var(--text-light); font-weight: 500;
    }

    /* ===== 内容推荐卡片 ===== */
    .content-card {
      background: var(--bg-white); border-radius: var(--radius);
      overflow: hidden; border: 1px solid var(--border);
      box-shadow: var(--shadow); transition: var(--transition);
      height: 100%; display: flex; flex-direction: column;
    }
    .content-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
    .content-card .card-img { position: relative; height: 200px; overflow: hidden; }
    .content-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
    .content-card:hover .card-img img { transform: scale(1.06); }
    .content-card .card-img .tag {
      position: absolute; top: 14px; left: 14px;
      background: var(--accent); color: #fff;
      font-size: 12px; padding: 5px 14px; border-radius: 999px; font-weight: 600;
      box-shadow: 0 4px 12px rgba(249,115,22,0.3);
    }
    .content-card .card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
    .content-card .card-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
    .content-card .card-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; flex: 1; }
    .content-card .card-link {
      margin-top: 18px; display: inline-flex; align-items: center; gap: 8px;
      color: var(--primary); font-size: 14px; font-weight: 600;
    }
    .content-card .card-link:hover { gap: 12px; color: var(--accent); }

    /* ===== 流程区 ===== */
    .flow-section { background: var(--bg-deep); color: #fff; position: relative; overflow: hidden; }
    .flow-section::before {
      content: ""; position: absolute; top: -50%; right: -20%;
      width: 500px; height: 500px; border-radius: 50%;
      background: radial-gradient(circle, rgba(30,58,138,0.4), transparent 70%);
    }
    .flow-grid .cell { position: relative; padding: 10px; }
    .flow-item {
      text-align: center; padding: 36px 28px; height: 100%;
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius); backdrop-filter: blur(6px);
      transition: var(--transition);
    }
    .flow-item:hover { background: rgba(255,255,255,0.09); transform: translateY(-4px); }
    .flow-num {
      width: 52px; height: 52px; margin: 0 auto 18px;
      border-radius: 50%; display: flex; align-items: center; justify-content: center;
      font-size: 22px; font-weight: 800; color: var(--primary);
      background: #fff; box-shadow: 0 6px 20px rgba(255,255,255,0.15);
    }
    .flow-item h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
    .flow-item p { font-size: 14px; color: rgba(255,255,255,0.7); line-height: 1.7; }

    /* ===== FAQ ===== */
    .faq-item {
      background: var(--bg-white); border-radius: var(--radius);
      padding: 26px 28px; margin-bottom: 16px;
      border: 1px solid var(--border); box-shadow: 0 4px 16px rgba(15,23,42,0.04);
      transition: var(--transition);
    }
    .faq-item:hover { border-color: rgba(30,58,138,0.2); box-shadow: var(--shadow); }
    .faq-item h3 {
      font-size: 17px; font-weight: 700; color: var(--text);
      display: flex; align-items: center; gap: 12px; margin-bottom: 6px;
    }
    .faq-item h3 i { color: var(--accent); font-size: 16px; width: 24px; text-align: center; }
    .faq-item p { font-size: 14px; color: var(--text-light); line-height: 1.8; padding-left: 36px; }

    /* ===== CTA ===== */
    .cta-section {
      background: linear-gradient(135deg, var(--primary), #4f46e5);
      color: #fff; text-align: center; padding: 70px 0;
      position: relative; overflow: hidden;
    }
    .cta-section::after {
      content: ""; position: absolute; bottom: -60%; left: -10%;
      width: 400px; height: 400px; border-radius: 50%;
      background: rgba(255,255,255,0.08);
    }
    .cta-section h2 { font-size: 32px; font-weight: 800; margin-bottom: 14px; }
    .cta-section p { font-size: 16px; color: rgba(255,255,255,0.85); max-width: 560px; margin: 0 auto 30px; }
    .cta-section .btn-cta {
      display: inline-flex; align-items: center; gap: 10px;
      padding: 15px 36px; border-radius: 999px;
      background: var(--accent); color: #fff; font-size: 16px; font-weight: 600;
      box-shadow: 0 8px 24px rgba(249,115,22,0.4);
      transition: var(--transition);
    }
    .cta-section .btn-cta:hover { background: var(--accent-dark); transform: translateY(-3px); box-shadow: 0 12px 32px rgba(249,115,22,0.5); }

    /* ===== 页脚 ===== */
    .site-footer {
      background: var(--bg-deep); color: #94a3b8;
      padding: 60px 0 30px; font-size: 14px;
    }
    .footer-grid { margin-bottom: 36px; }
    .footer-logo {
      font-size: 22px; font-weight: 800; color: #fff;
      display: flex; align-items: center; gap: 10px; margin-bottom: 14px;
    }
    .footer-logo i {
      width: 36px; height: 36px; border-radius: 10px;
      background: var(--accent); color: #fff; font-size: 16px;
      display: flex; align-items: center; justify-content: center;
    }
    .footer-brand p { line-height: 1.8; margin-bottom: 18px; max-width: 340px; }
    .footer-social { display: flex; gap: 10px; }
    .footer-social a {
      width: 38px; height: 38px; border-radius: 10px;
      background: rgba(255,255,255,0.08); color: #e2e8f0;
      display: flex; align-items: center; justify-content: center; font-size: 16px;
      transition: var(--transition);
    }
    .footer-social a:hover { background: var(--accent); color: #fff; transform: translateY(-3px); }
    .site-footer h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 18px; }
    .footer-links { display: flex; flex-direction: column; gap: 10px; }
    .footer-links a { color: #94a3b8; display: inline-flex; align-items: center; gap: 8px; }
    .footer-links a:hover { color: #fff; padding-left: 4px; }
    .footer-info p { margin-bottom: 8px; line-height: 1.7; }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.08);
      padding-top: 24px; text-align: center; color: #64748b;
      font-size: 13px;
    }
    .footer-bottom p { margin: 0; }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      :root { --space-section: 60px; }
      .page-hero h1 { font-size: 38px; }
      .section-head h2 { font-size: 28px; }
    }

    @media (max-width: 768px) {
      .header-inner { height: 64px; }
      .header-nav-left, .header-nav-right { display: none; }
      .menu-toggle { display: flex; }
      .header-logo { margin: 0 auto; font-size: 18px; padding: 6px 8px; }
      .header-logo .logo-mark { width: 34px; height: 34px; font-size: 15px; }
      .page-hero { padding: 70px 0 80px; }
      .page-hero h1 { font-size: 30px; }
      .page-hero p { font-size: 16px; }
      .hero-actions .btn-primary, .hero-actions .btn-ghost { padding: 12px 24px; font-size: 15px; }
      .section-head { margin-bottom: 36px; }
      .section-head h2 { font-size: 24px; }
      .cta-section h2 { font-size: 26px; }
      .cta-section p { font-size: 15px; }
      .footer-grid .cell { margin-bottom: 28px; }
    }

    @media (max-width: 520px) {
      :root { --space-section: 50px; }
      .container { padding: 0 18px; }
      .header-logo span:last-child { font-size: 17px; }
      .page-hero h1 { font-size: 25px; }
      .page-hero .hero-badge { font-size: 12px; padding: 6px 14px; }
      .hero-actions { flex-direction: column; align-items: center; }
      .hero-actions .btn-primary, .hero-actions .btn-ghost { width: 100%; justify-content: center; }
      .entry-card { padding: 24px 20px; }
      .entry-card h3 { font-size: 18px; }
      .content-card .card-img { height: 170px; }
      .faq-item { padding: 20px; }
      .faq-item p { padding-left: 0; margin-top: 8px; }
      .flow-item { padding: 26px 18px; }
    }

    /* Foundation 在手机上的默认 cell 间距调整 */
    .grid-margin-x { margin-left: -0.7rem; margin-right: -0.7rem; }
    .grid-margin-x > .cell { margin-left: 0.7rem; margin-right: 0.7rem; }
    .grid-x > .cell { margin-bottom: 0; }
    .grid-padding-x > .cell { padding-left: 0.65rem; padding-right: 0.65rem; }

/* roulang page: article */
:root{
    --primary:#2563eb;
    --primary-dark:#1d4ed8;
    --primary-light:#eff6ff;
    --accent:#f59e0b;
    --accent-light:#fef3c7;
    --bg:#f5f7fd;
    --surface:#ffffff;
    --text:#1e293b;
    --text-light:#64748b;
    --border:#e2e8f0;
    --radius:16px;
    --radius-sm:10px;
    --shadow:0 4px 24px rgba(30,64,175,.06);
    --shadow-hover:0 12px 32px rgba(30,64,175,.12);
    --navbar-height:76px;
    --transition:all .3s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,Arial,sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--text);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:var(--transition)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(37,99,235,.35);outline-offset:2px}
button{font-family:inherit;border:none;cursor:pointer;background:none}
ul,ol{list-style:none}
.grid-container{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
.grid-container.full{padding-left:0;padding-right:0}

/* ---------- Header & Nav ---------- */
.site-header{
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--border);
    position:sticky;
    top:0;
    z-index:100;
    box-shadow:0 1px 8px rgba(0,0,0,.03);
}
.header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:var(--navbar-height);
    gap:16px;
}
.header-logo{
    font-size:1.45rem;
    font-weight:800;
    letter-spacing:.5px;
    color:var(--text);
    padding:8px 16px;
    border-radius:12px;
    background:linear-gradient(135deg,var(--primary-light),var(--surface));
    border:1px solid var(--border);
    white-space:nowrap;
    transition:var(--transition);
}
.header-logo:hover{box-shadow:var(--shadow);border-color:var(--primary);color:var(--primary)}
.header-nav{display:flex;align-items:center;gap:6px;flex-wrap:nowrap}
.header-nav a{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:10px 16px;
    border-radius:999px;
    font-size:.95rem;
    font-weight:500;
    color:var(--text-light);
    white-space:nowrap;
    transition:var(--transition);
}
.header-nav a i{font-size:.9rem;opacity:.85}
.header-nav a:hover{color:var(--primary);background:var(--primary-light)}
.header-nav a.active{color:var(--primary);background:var(--primary-light);font-weight:600}
.nav-toggle{
    display:none;
    width:44px;height:44px;
    border-radius:12px;
    background:var(--primary-light);
    color:var(--primary);
    font-size:1.1rem;
    align-items:center;
    justify-content:center;
    transition:var(--transition);
    border:1px solid var(--border);
}
.nav-toggle:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.mobile-nav{
    display:none;
    background:#fff;
    border-top:1px solid var(--border);
    padding:12px 20px 20px;
    flex-direction:column;
    gap:6px;
}
.mobile-nav.open{display:flex;animation:fadeDown .25s ease}
.mobile-nav a{
    display:flex;
    align-items:center;
    gap:10px;
    padding:14px 18px;
    border-radius:12px;
    font-size:1rem;
    font-weight:500;
    color:var(--text);
    background:var(--bg);
    transition:var(--transition);
}
.mobile-nav a:hover{background:var(--primary-light);color:var(--primary)}
.mobile-nav a i{width:20px;text-align:center;color:var(--primary)}
@keyframes fadeDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}

/* ---------- Breadcrumb ---------- */
.breadcrumb{
    display:flex;
    align-items:center;
    gap:10px;
    flex-wrap:wrap;
    padding:26px 0 16px;
    font-size:.92rem;
    color:var(--text-light);
}
.breadcrumb a{
    display:inline-flex;
    align-items:center;
    gap:6px;
    color:var(--text-light);
    font-weight:500;
}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#c0c8d4;font-size:1rem}
.breadcrumb .current{color:var(--text);font-weight:600;max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- Article Card ---------- */
.article-main{padding-bottom:50px}
.article-card{
    background:var(--surface);
    border-radius:var(--radius);
    box-shadow:var(--shadow);
    overflow:hidden;
    border:1px solid rgba(226,232,240,.6);
    margin-bottom:40px;
}
.article-header{padding:32px 36px 12px}
.article-category{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:6px 16px;
    background:var(--primary-light);
    color:var(--primary);
    border-radius:999px;
    font-size:.85rem;
    font-weight:600;
    letter-spacing:.3px;
    margin-bottom:16px;
}
.article-category i{font-size:.8rem}
.article-header h1{
    font-size:2.1rem;
    line-height:1.3;
    font-weight:800;
    color:var(--text);
    letter-spacing:-.3px;
    margin-bottom:18px;
}
.article-meta{
    display:flex;
    align-items:center;
    gap:20px;
    flex-wrap:wrap;
    font-size:.9rem;
    color:var(--text-light);
    margin-bottom:22px;
    padding-bottom:22px;
    border-bottom:1px solid var(--border);
}
.article-meta span{
    display:inline-flex;
    align-items:center;
    gap:7px;
}
.article-meta i{color:var(--primary);font-size:.95rem}
.article-cover{
    position:relative;
    overflow:hidden;
    margin:0;
    background:var(--primary-light);
}
.article-cover img{
    width:100%;
    height:420px;
    object-fit:cover;
    transition:transform .5s ease;
}
.article-cover::after{
    content:'';
    position:absolute;
    inset:0;
    background:linear-gradient(to top,rgba(2,6,23,.08),rgba(2,6,23,0) 40%);
    pointer-events:none;
}
.article-content{
    padding:36px 36px 20px;
    font-size:1.05rem;
    color:#334155;
    line-height:1.9;
}
.article-content p{margin-bottom:1.5em}
.article-content h2{
    font-size:1.55rem;
    font-weight:700;
    color:var(--text);
    margin:1.8em 0 .7em;
    padding-left:14px;
    border-left:4px solid var(--primary);
    line-height:1.4;
}
.article-content h3{
    font-size:1.25rem;
    font-weight:700;
    color:var(--text);
    margin:1.5em 0 .6em;
}
.article-content img{border-radius:var(--radius);margin:24px 0;box-shadow:var(--shadow)}
.article-content blockquote{
    background:var(--primary-light);
    border-left:4px solid var(--primary);
    padding:18px 24px;
    border-radius:0 var(--radius-sm) var(--radius-sm) 0;
    color:var(--text);
    font-style:normal;
    margin:24px 0;
}
.article-content ul,.article-content ol{margin:0 0 1.5em;padding-left:1.4em}
.article-content ul li{list-style:disc;margin-bottom:.5em}
.article-content ol li{list-style:decimal;margin-bottom:.5em}
.article-content a{color:var(--primary);border-bottom:1px solid rgba(37,99,235,.3)}
.article-content a:hover{color:var(--primary-dark);border-bottom-color:var(--primary-dark)}
.article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:.95rem}
.article-content th,.article-content td{border:1px solid var(--border);padding:12px 16px;text-align:left}
.article-content th{background:var(--primary-light);font-weight:600;color:var(--text)}
.not-found{
    text-align:center;
    padding:40px 20px 50px;
}
.not-found i{font-size:3.2rem;color:var(--primary);margin-bottom:16px}
.not-found p{font-size:1.2rem;color:var(--text);margin-bottom:20px}
.btn-primary{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:14px 36px;
    background:var(--primary);
    color:#fff;
    border-radius:999px;
    font-weight:600;
    font-size:1rem;
    border:2px solid var(--primary);
    transition:var(--transition);
    box-shadow:0 4px 14px rgba(37,99,235,.25);
}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(37,99,235,.3)}
.btn-ghost{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:13px 34px;
    background:transparent;
    color:#fff;
    border-radius:999px;
    font-weight:600;
    border:2px solid rgba(255,255,255,.5);
    transition:var(--transition);
}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.12);transform:translateY(-2px)}
.article-tags{
    display:flex;
    align-items:center;
    gap:10px;
    flex-wrap:wrap;
    padding:20px 36px 10px;
    border-top:1px solid var(--border);
    margin-top:10px;
}
.article-tags span{font-size:.9rem;color:var(--text-light);font-weight:500}
.tag{
    display:inline-flex;
    align-items:center;
    gap:5px;
    padding:5px 16px;
    background:var(--bg);
    border:1px solid var(--border);
    border-radius:999px;
    font-size:.85rem;
    color:var(--text-light);
    transition:var(--transition);
}
.tag:hover{background:var(--primary-light);border-color:var(--primary);color:var(--primary)}
.article-share{
    display:flex;
    align-items:center;
    gap:12px;
    padding:14px 36px 28px;
}
.article-share span{font-size:.9rem;color:var(--text-light);font-weight:500}
.article-share a{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:40px;height:40px;
    border-radius:12px;
    background:var(--bg);
    border:1px solid var(--border);
    color:var(--text-light);
    font-size:1.05rem;
    transition:var(--transition);
}
.article-share a:hover{background:var(--primary);color:#fff;border-color:var(--primary);transform:translateY(-2px)}

/* ---------- Related Section ---------- */
.related-section{
    padding:64px 0 40px;
    background:linear-gradient(180deg,var(--bg) 0%,#fff 100%);
}
.section-head{text-align:center;margin-bottom:38px}
.section-head h2{font-size:1.8rem;font-weight:800;color:var(--text);position:relative;display:inline-block}
.section-head h2::after{
    content:'';
    position:absolute;
    bottom:-8px;left:50%;
    transform:translateX(-50%);
    width:48px;height:4px;
    background:var(--primary);
    border-radius:4px;
}
.section-head p{margin-top:14px;color:var(--text-light);font-size:.98rem}
.related-card{
    display:block;
    background:var(--surface);
    border-radius:var(--radius);
    border:1px solid var(--border);
    overflow:hidden;
    box-shadow:var(--shadow);
    transition:var(--transition);
    height:100%;
}
.related-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:var(--primary)}
.related-cover{height:170px;overflow:hidden;background:var(--primary-light)}
.related-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.related-card:hover .related-cover img{transform:scale(1.06)}
.related-body{padding:18px 18px 20px}
.related-body h3{
    font-size:.98rem;
    font-weight:600;
    color:var(--text);
    line-height:1.5;
    margin-bottom:10px;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
    min-height:3em;
}
.related-body h3:hover{color:var(--primary)}
.related-date{
    font-size:.82rem;
    color:var(--text-light);
    display:inline-flex;
    align-items:center;
    gap:6px;
}
.related-date i{font-size:.85rem}

/* ---------- Category Cards ---------- */
.category-section{padding:60px 0 70px;background:#fff}
.category-card{
    position:relative;
    display:block;
    height:100%;
    border-radius:var(--radius);
    overflow:hidden;
    background:var(--surface);
    border:1px solid var(--border);
    box-shadow:var(--shadow);
    transition:var(--transition);
}
.category-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-hover);border-color:var(--primary)}
.category-card-cover{
    height:190px;
    overflow:hidden;
    position:relative;
    background:var(--primary-light);
}
.category-card-cover img{
    width:100%;height:100%;object-fit:cover;
    transition:transform .5s ease;
}
.category-card:hover .category-card-cover img{transform:scale(1.07)}
.category-card-cover::after{
    content:'';
    position:absolute;inset:0;
    background:linear-gradient(to top,rgba(15,23,42,.35),rgba(15,23,42,0) 55%);
}
.category-card-body{
    padding:22px 24px 26px;
    position:relative;
    background:var(--surface);
}
.category-icon{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:48px;height:48px;
    background:var(--primary-light);
    color:var(--primary);
    border-radius:14px;
    font-size:1.2rem;
    margin-top:-46px;
    position:relative;
    z-index:2;
    box-shadow:var(--shadow);
    border:1px solid rgba(37,99,235,.12);
    transition:var(--transition);
}
.category-card:hover .category-icon{background:var(--primary);color:#fff;transform:rotate(-6deg)}
.category-card-body h3{font-size:1.12rem;font-weight:700;color:var(--text);margin:12px 0 8px}
.category-card-body p{font-size:.9rem;color:var(--text-light);line-height:1.6;margin-bottom:16px}
.category-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:.9rem;
    font-weight:600;
    color:var(--primary);
}
.category-link i{transition:transform .3s ease}
.category-card:hover .category-link i{transform:translateX(4px)}
.category-card:nth-child(2) .category-icon{background:var(--accent-light);color:var(--accent)}
.category-card:nth-child(3) .category-icon{background:var(--primary-light);color:var(--primary)}

/* ---------- CTA Section ---------- */
.cta-section{
    padding:70px 0;
    background:
        linear-gradient(rgba(15,23,42,.82),rgba(15,23,42,.85)),
        url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    position:relative;
    text-align:center;
}
.cta-inner{max-width:720px;margin:0 auto;padding:0 20px}
.cta-title{font-size:2rem;font-weight:800;color:#fff;margin-bottom:14px;letter-spacing:.5px}
.cta-text{color:rgba(255,255,255,.75);font-size:1.05rem;margin-bottom:30px}
.cta-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* ---------- Footer ---------- */
.site-footer{
    background:#0f172a;
    color:rgba(255,255,255,.7);
    padding:60px 0 0;
}
.footer-grid{padding-bottom:40px}
.footer-brand .footer-logo{font-size:1.35rem;font-weight:800;color:#fff;margin-bottom:14px;letter-spacing:.5px}
.footer-brand p{font-size:.92rem;line-height:1.7;color:rgba(255,255,255,.6);margin-bottom:18px}
.footer-social{display:flex;gap:10px}
.footer-social a{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:40px;height:40px;
    border-radius:10px;
    background:rgba(255,255,255,.08);
    color:#fff;
    font-size:1rem;
    transition:var(--transition);
}
.footer-social a:hover{background:var(--primary);transform:translateY(-3px)}
.site-footer h4{
    color:#fff;
    font-size:1rem;
    font-weight:600;
    margin-bottom:18px;
    position:relative;
    padding-bottom:10px;
}
.site-footer h4::after{
    content:'';
    position:absolute;
    left:0;bottom:0;
    width:28px;height:3px;
    background:var(--primary);
    border-radius:3px;
}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:.92rem;color:rgba(255,255,255,.6);transition:var(--transition);display:inline-flex;align-items:center;gap:6px}
.footer-links a:hover{color:var(--primary);transform:translateX(4px)}
.footer-links a i{font-size:.75rem}
.footer-info p{font-size:.9rem;color:rgba(255,255,255,.5);margin-bottom:10px;display:flex;align-items:center;gap:8px}
.footer-info p i{color:var(--primary);width:18px}
.footer-bottom{
    border-top:1px solid rgba(255,255,255,.08);
    padding:20px 0;
    text-align:center;
    font-size:.85rem;
    color:rgba(255,255,255,.4);
}
.footer-bottom p{margin-bottom:0}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
    .header-nav a{padding:9px 12px;font-size:.88rem}
    .article-header h1{font-size:1.7rem}
    .article-cover img{height:340px}
}
@media (max-width:768px){
    .header-nav{display:none}
    .nav-toggle{display:flex}
    .mobile-nav{display:flex;flex-direction:column;display:none}
    .mobile-nav.open{display:flex}
    .header-inner{height:64px}
    .header-logo{font-size:1.2rem;padding:6px 14px}
    .article-header{padding:24px 20px 10px}
    .article-header h1{font-size:1.4rem}
    .article-content{padding:24px 20px 16px;font-size:1rem}
    .article-meta{gap:12px;font-size:.85rem}
    .article-cover img{height:240px}
    .article-tags{padding:18px 20px 10px}
    .article-share{padding:12px 20px 24px}
    .related-section{padding:44px 0 30px}
    .category-section{padding:44px 0 50px}
    .cta-section{padding:54px 0}
    .cta-title{font-size:1.5rem}
    .breadcrumb{padding:16px 0 10px}
    .footer-grid .cell{margin-bottom:30px}
}
@media (max-width:520px){
    .grid-container{padding-left:16px;padding-right:16px}
    .article-card{margin-bottom:28px}
    .article-cover img{height:190px}
    .related-card .related-cover{height:150px}
    .cta-buttons .btn-primary,.cta-buttons .btn-ghost{width:100%;justify-content:center}
    .article-meta{flex-direction:column;align-items:flex-start;gap:8px}
}

/* roulang page: category2 */
:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #eef2ff;
    --accent: #f97316;
    --accent-light: #fff7ed;
    --dark: #0b1120;
    --bg: #f4f6fb;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --text-mute: #94a3b8;
    --border: #e6eaf0;
    --radius-lg: 22px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --shadow-sm: 0 4px 14px rgba(2, 6, 23, 0.05);
    --shadow-md: 0 10px 30px rgba(2, 6, 23, 0.08);
    --shadow-lg: 0 24px 50px rgba(2, 6, 23, 0.14);
    --transition: all 0.3s ease;
    --header-h: 78px;
}
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}
img {
    max-width: 100%;
    display: block;
}
a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}
ul {
    list-style: none;
}
button {
    border: none;
    cursor: pointer;
    font-family: inherit;
}
.grid-container {
    max-width: 1280px;
}

/* ========== Header ========== */
.site-header {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(2, 6, 23, 0.03);
}
.header-row {
    min-height: var(--header-h);
    position: relative;
}
.site-logo {
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: var(--primary);
    background: linear-gradient(135deg, #4f46e5 20%, #9333ea 80%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
    white-space: nowrap;
    line-height: 1.2;
}
.header-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}
.header-nav-left {
    justify-content: flex-start;
}
.header-nav-right {
    justify-content: flex-end;
}
.header-nav a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 16px;
    border-radius: 100px;
    color: var(--text-light);
    font-size: 0.92rem;
    font-weight: 500;
    transition: var(--transition);
}
.header-nav a i {
    font-size: 0.85rem;
    opacity: 0.8;
}
.header-nav a:hover {
    color: var(--primary);
    background: var(--primary-light);
}
.header-nav a.active {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    box-shadow: 0 6px 18px rgba(79, 70, 229, 0.28);
}
.nav-toggle {
    display: none;
    position: absolute;
    right: 16px;
    top: 22px;
    background: var(--primary-light);
    width: 40px;
    height: 36px;
    border-radius: 10px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    z-index: 200;
}
.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}
.mobile-menu {
    display: none;
    padding: 12px 16px 18px;
    border-top: 1px solid var(--border);
    background: #fff;
}
.mobile-menu a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    color: var(--text);
    font-weight: 500;
    border-bottom: 1px solid var(--border);
}
.mobile-menu a:last-child {
    border-bottom: none;
}
.mobile-menu a.active {
    color: var(--primary);
    background: var(--primary-light);
}
.mobile-menu a i {
    width: 20px;
    text-align: center;
    color: var(--text-mute);
}

/* ========== Page Hero ========== */
.page-hero {
    position: relative;
    padding: 90px 0 80px;
    background: linear-gradient(135deg, rgba(11, 17, 32, 0.92), rgba(30, 27, 75, 0.88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    color: #fff;
    text-align: center;
}
.page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 100%, rgba(79, 70, 229, 0.3), transparent 70%);
    pointer-events: none;
}
.page-hero .grid-container {
    position: relative;
    z-index: 2;
}
.hero-breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.65);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 7px 18px;
    border-radius: 100px;
    margin-bottom: 22px;
}
.hero-breadcrumb a {
    color: rgba(255, 255, 255, 0.85);
}
.hero-breadcrumb a:hover {
    color: #fff;
}
.page-hero h1 {
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 18px;
    letter-spacing: 0.02em;
}
.page-hero h1 span {
    background: linear-gradient(90deg, #fbbf24, #fb7185);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.page-hero .hero-desc {
    font-size: 1.08rem;
    color: rgba(255, 255, 255, 0.82);
    max-width: 680px;
    margin: 0 auto 30px;
    line-height: 1.8;
}

/* ========== Section base ========== */
.section-block {
    padding: 88px 0;
}
.section-light {
    background: var(--bg);
}
.section-white {
    background: #fff;
}
.section-dark {
    background: var(--dark);
    color: #fff;
}
.section-head {
    text-align: center;
    margin-bottom: 52px;
}
.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--primary);
    background: var(--primary-light);
    border: 1px solid #c7d2fe;
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 14px;
}
.section-head h2 {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 12px;
    color: var(--text);
}
.section-head p {
    color: var(--text-light);
    font-size: 1rem;
    max-width: 620px;
    margin: 0 auto;
}

/* ========== Stats ========== */
.stats-wrap {
    margin-top: -58px;
    position: relative;
    z-index: 3;
}
.stats-card {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 34px 24px;
    text-align: center;
    border: 1px solid var(--border);
    transition: var(--transition);
}
.stats-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.stats-card .stat-num {
    font-size: 2.3rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
    margin-bottom: 6px;
}
.stats-card .stat-label {
    font-size: 0.92rem;
    color: var(--text-light);
    font-weight: 500;
}

/* ========== Ranking Cards ========== */
.rank-grid .cell {
    display: flex;
}
.rank-card {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    width: 100%;
}
.rank-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: #c7d2fe;
}
.rank-card-media {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    background: var(--primary-light);
}
.rank-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.rank-card:hover .rank-card-media img {
    transform: scale(1.05);
}
.rank-card-media::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(2, 6, 23, 0.25), transparent 60%);
}
.score-badge {
    position: absolute;
    top: 14px;
    right: 14px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    border-radius: 12px;
    padding: 6px 12px;
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--accent);
    box-shadow: 0 4px 12px rgba(2, 6, 23, 0.12);
    z-index: 2;
}
.rank-card-body {
    padding: 22px 22px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.rank-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.rank-card-title .rank-no {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-mute);
    background: var(--bg);
    padding: 3px 10px;
    border-radius: 100px;
}
.rank-card-cat {
    display: inline-block;
    font-size: 0.85rem;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 12px;
    border-radius: 100px;
    font-weight: 600;
    align-self: flex-start;
}
.rank-card-desc {
    font-size: 0.92rem;
    color: var(--text-light);
    line-height: 1.7;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.tag-list .tag {
    font-size: 0.78rem;
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 3px 10px;
    border-radius: 100px;
    color: var(--text-light);
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 26px;
    border-radius: 100px;
    font-size: 0.94rem;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid transparent;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    color: #fff;
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(79, 70, 229, 0.4);
}
.btn-outline {
    border-color: var(--border);
    color: var(--text);
    background: #fff;
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}
.btn-light {
    background: #fff;
    color: var(--primary);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}
.btn-light:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.2);
}
.btn-sm {
    padding: 8px 18px;
    font-size: 0.85rem;
}

/* ========== Criteria ========== */
.criteria-wrap {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}
.criteria-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--border);
    display: flex;
    gap: 20px;
    transition: var(--transition);
}
.criteria-card:hover {
    border-color: #c7d2fe;
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}
.criteria-icon {
    flex: 0 0 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}
.criteria-icon.i-blue {
    background: #eef2ff;
    color: #4f46e5;
}
.criteria-icon.i-green {
    background: #ecfdf5;
    color: #10b981;
}
.criteria-icon.i-orange {
    background: #fff7ed;
    color: #f97316;
}
.criteria-icon.i-purple {
    background: #f5f3ff;
    color: #8b5cf6;
}
.criteria-icon.i-pink {
    background: #fdf2f8;
    color: #ec4899;
}
.criteria-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 6px;
}
.criteria-card p {
    font-size: 0.88rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* ========== Top List ========== */
.top-list {
    max-width: 780px;
    margin: 0 auto;
}
.top-item {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 20px 26px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 20px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.top-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(6px);
}
.top-rank {
    flex: 0 0 42px;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.05rem;
    background: var(--bg);
    color: var(--text-mute);
}
.top-rank.r-1 {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #fff;
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
}
.top-rank.r-2 {
    background: linear-gradient(135deg, #94a3b8, #64748b);
    color: #fff;
}
.top-rank.r-3 {
    background: linear-gradient(135deg, #d97706, #b45309);
    color: #fff;
}
.top-info {
    flex: 1;
}
.top-info .name {
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 6px;
}
.top-bar {
    height: 7px;
    background: var(--bg);
    border-radius: 100px;
    overflow: hidden;
    position: relative;
}
.top-bar span {
    display: block;
    height: 100%;
    border-radius: 100px;
    background: linear-gradient(90deg, var(--primary), #a855f7);
}
.top-score {
    flex: 0 0 70px;
    text-align: right;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--accent);
}

/* ========== Process ========== */
.process-wrap {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}
.process-step {
    text-align: center;
    padding: 30px 20px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}
.process-step:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-6px);
}
.process-step .step-num {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), #a855f7);
    color: #fff;
    font-weight: 800;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    box-shadow: 0 8px 20px rgba(79, 70, 229, 0.35);
}
.process-step h3 {
    font-size: 1rem;
    margin-bottom: 8px;
    color: #fff;
}
.process-step p {
    font-size: 0.84rem;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.6;
}

/* ========== FAQ ========== */
.faq-wrap {
    max-width: 860px;
    margin: 0 auto;
}
.faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 14px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.faq-question {
    padding: 20px 26px;
    font-weight: 600;
    font-size: 1.02rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
}
.faq-question:hover {
    color: var(--primary);
}
.faq-question i {
    color: var(--primary);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}
.faq-item.open .faq-question i {
    transform: rotate(45deg);
}
.faq-answer {
    display: none;
    padding: 0 26px 20px;
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.8;
}

/* ========== CTA ========== */
.cta-section {
    background: linear-gradient(135deg, var(--primary), #7c3aed 55%, #db2777);
    border-radius: var(--radius-lg);
    padding: 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    top: -100px;
    right: -60px;
}
.cta-section::after {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    bottom: -80px;
    left: -40px;
}
.cta-section h2 {
    color: #fff;
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    margin-bottom: 12px;
    position: relative;
    z-index: 2;
}
.cta-section p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1rem;
    margin-bottom: 30px;
    position: relative;
    z-index: 2;
}
.cta-section .btn-wrap {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}

/* ========== Footer ========== */
.site-footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.72);
    padding: 70px 0 0;
    margin-top: 0;
}
.footer-grid {
    padding-bottom: 44px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand .footer-logo {
    font-size: 1.35rem;
    font-weight: 800;
    background: linear-gradient(90deg, #fff, #c7d2fe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 14px;
}
.footer-brand p {
    font-size: 0.92rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 20px;
}
.footer-social {
    display: flex;
    gap: 12px;
}
.footer-social a {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
    transition: var(--transition);
}
.footer-social a:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-3px);
}
.site-footer h4 {
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 18px;
    letter-spacing: 0.02em;
}
.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-links a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}
.footer-links a:hover {
    color: #fff;
    padding-left: 6px;
}
.footer-info p {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 8px;
    line-height: 1.7;
}
.footer-bottom {
    padding: 22px 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    margin-top: 0;
}
.footer-bottom p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.45);
}

/* ========== Responsive ========== */
@media screen and (max-width: 1024px) {
    .header-nav a {
        padding: 8px 12px;
        font-size: 0.86rem;
    }
    .header-nav a i {
        display: none;
    }
    .criteria-wrap {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .process-wrap {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}
@media screen and (max-width: 768px) {
    :root {
        --header-h: 64px;
    }
    .header-row {
        min-height: var(--header-h);
    }
    .header-nav {
        display: none;
    }
    .nav-toggle {
        display: flex;
    }
    .site-logo {
        font-size: 1.15rem;
    }
    .header-row .cell.small-4:first-child {
        display: flex;
        align-items: center;
    }
    .header-row .cell.small-4:last-child {
        display: flex;
        justify-content: flex-end;
    }
    .page-hero {
        padding: 64px 0 54px;
    }
    .section-block {
        padding: 60px 0;
    }
    .section-head {
        margin-bottom: 36px;
    }
    .stats-wrap {
        margin-top: -40px;
    }
    .stats-card {
        padding: 24px 18px;
    }
    .stats-card .stat-num {
        font-size: 1.8rem;
    }
    .rank-card-body {
        padding: 18px;
    }
    .criteria-card {
        padding: 24px;
        flex-direction: column;
        gap: 12px;
    }
    .top-item {
        padding: 16px 18px;
        gap: 14px;
    }
    .top-rank {
        flex: 0 0 36px;
        width: 36px;
        height: 36px;
        font-size: 0.95rem;
    }
    .top-score {
        font-size: 1.05rem;
        flex: 0 0 46px;
    }
    .process-wrap {
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .process-step {
        padding: 22px 16px;
    }
    .cta-section {
        padding: 40px 24px;
        border-radius: var(--radius-md);
    }
    .footer-grid {
        padding-bottom: 30px;
    }
    .footer-brand {
        margin-bottom: 20px;
    }
    .site-footer h4 {
        margin-top: 20px;
    }
}
@media screen and (max-width: 520px) {
    body {
        font-size: 15px;
    }
    .page-hero h1 {
        font-size: 1.8rem;
    }
    .page-hero .hero-desc {
        font-size: 0.95rem;
    }
    .hero-breadcrumb {
        font-size: 0.78rem;
        padding: 6px 14px;
    }
    .stats-card {
        padding: 18px 12px;
    }
    .stats-card .stat-num {
        font-size: 1.55rem;
    }
    .rank-card-media {
        aspect-ratio: 16 / 10;
    }
    .top-item {
        flex-wrap: wrap;
        gap: 12px;
    }
    .top-score {
        text-align: left;
        flex: none;
        width: 100%;
        font-size: 1.2rem;
    }
    .btn {
        padding: 10px 20px;
        font-size: 0.88rem;
    }
    .footer-links a {
        font-size: 0.88rem;
    }
}

/* roulang page: category3 */
/* ===== 设计变量 ===== */
:root {
  --primary: #4f6df5;
  --primary-dark: #3a50d0;
  --primary-light: #eef1fe;
  --accent: #ff8a3d;
  --accent-light: #fff2ea;
  --bg: #f6f8fc;
  --bg-white: #ffffff;
  --bg-dark: #171f2e;
  --text: #1e2536;
  --text-weak: #67718a;
  --border: #e4e8f0;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 6px 28px rgba(30, 37, 54, 0.07);
  --shadow-lg: 0 18px 50px rgba(30, 37, 54, 0.13);
  --transition: all 0.3s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; }

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

:focus-visible {
  outline: 3px solid rgba(79, 109, 245, 0.4);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ===== Header ===== */
.site-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 16px rgba(30, 37, 54, 0.05);
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 74px;
  gap: 12px;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.header-nav-left { justify-content: flex-start; }
.header-nav-right { justify-content: flex-end; }

.header-nav a {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-weak);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
  transition: var(--transition);
}

.header-nav a i { font-size: 14px; color: inherit; }

.header-nav a:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.header-nav a.active {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 6px 18px rgba(79, 109, 245, 0.35);
}

.brand-logo {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 1px;
  background: linear-gradient(135deg, var(--primary) 0%, #8b5cf6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  line-height: 1.2;
  z-index: 2;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  width: 44px;
  height: 44px;
  font-size: 19px;
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  margin-left: auto;
  flex-shrink: 0;
}

.mobile-menu-btn:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: rgba(79, 109, 245, 0.3);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 74px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 14px 20px 20px;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  flex-direction: column;
  gap: 6px;
}

.mobile-menu.open { display: flex; }

.mobile-menu a {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
}

.mobile-menu a i { width: 20px; text-align: center; color: var(--primary); }

.mobile-menu a:hover,
.mobile-menu a.active {
  background: var(--primary-light);
  color: var(--primary);
}

/* ===== Hero ===== */
.page-hero {
  position: relative;
  background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 96px 0 76px;
  color: #fff;
  text-align: center;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(17, 26, 42, 0.78) 0%, rgba(79, 109, 245, 0.62) 100%);
  z-index: 1;
}

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

.hero-breadcrumb {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  background: rgba(255, 255, 255, 0.13);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  padding: 7px 22px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 26px;
}

.hero-breadcrumb a:hover { color: #fff; opacity: 0.85; }

.hero-breadcrumb i {
  font-size: 11px;
  opacity: 0.7;
}

.page-hero h1 {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: 3px;
  text-shadow: 0 6px 26px rgba(0, 0, 0, 0.3);
  line-height: 1.3;
}

.page-hero .hero-sub {
  font-size: 18px;
  opacity: 0.92;
  max-width: 760px;
  margin: 0 auto;
  line-height: 1.85;
}

/* ===== Section 通用 ===== */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-white); }

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  padding: 7px 18px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.section-label i { font-size: 13px; }

.section-header h2 {
  font-size: 34px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
  line-height: 1.35;
}

.section-header h2 span {
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header p {
  color: var(--text-weak);
  font-size: 16px;
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.75;
}

/* ===== 主题入口卡片 ===== */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.topic-card {
  background: linear-gradient(145deg, var(--bg-white) 0%, var(--primary-light) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  display: block;
}

.topic-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(79, 109, 245, 0.3);
}

.topic-card .topic-icon {
  width: 58px;
  height: 58px;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: #fff;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin: 0 auto 18px;
  box-shadow: 0 8px 20px rgba(79, 109, 245, 0.28);
  transition: var(--transition);
}

.topic-card:hover .topic-icon {
  transform: rotate(-6deg) scale(1.05);
}

.topic-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.topic-card p {
  font-size: 13px;
  color: var(--text-weak);
  margin: 0;
  line-height: 1.7;
}

/* ===== 攻略内容卡片 ===== */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.guide-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.guide-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(79, 109, 245, 0.26);
}

.guide-card .card-image {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.guide-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.55s ease;
}

.guide-card:hover .card-image img { transform: scale(1.05); }

.guide-card .card-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(12, 18, 32, 0.5) 100%);
}

.card-tag {
  position: absolute;
  left: 16px;
  top: 16px;
  z-index: 3;
  background: rgba(255, 255, 255, 0.93);
  backdrop-filter: blur(6px);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.14);
  line-height: 1.5;
}

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

.guide-card .card-body h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.45;
  color: var(--text);
}

.guide-card .card-body p {
  color: var(--text-weak);
  font-size: 14px;
  margin-bottom: 18px;
  flex: 1;
  line-height: 1.75;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 13px;
  color: var(--text-weak);
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.card-meta i { font-size: 12px; color: var(--primary); }

/* ===== 图文特色 ===== */
.feature-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

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

.feature-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 320px;
}

.feature-text h3 {
  font-size: 29px;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.4;
  color: var(--text);
}

.feature-text > p {
  color: var(--text-weak);
  margin-bottom: 24px;
  line-height: 1.85;
  font-size: 16px;
}

.feature-points {
  list-style: none;
  padding: 0;
  margin: 0;
}

.feature-points li {
  padding: 11px 0 11px 38px;
  position: relative;
  font-size: 15px;
  color: var(--text);
  border-bottom: 1px dashed var(--border);
  line-height: 1.65;
}

.feature-points li:last-child { border-bottom: none; }

.feature-points li::before {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 11px;
  color: var(--primary);
  background: var(--primary-light);
  width: 27px;
  height: 27px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

/* ===== 流程步骤 ===== */
.steps-wrapper {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.step-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 36px 28px;
  border: 1px solid var(--border);
  position: relative;
  box-shadow: 0 4px 18px rgba(30, 37, 54, 0.05);
  transition: var(--transition);
}

.step-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(79, 109, 245, 0.22);
}

.step-card .step-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  width: 36px;
  height: 36px;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.step-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}

.step-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.75;
  margin: 0;
}

/* ===== 排行榜深色区块 ===== */
.rank-section {
  background: var(--bg-dark);
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  color: #fff;
  position: relative;
}

.rank-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(18, 25, 40, 0.86);
  backdrop-filter: blur(2px);
}

.rank-section .container { position: relative; z-index: 2; }

.rank-section .section-header h2 { color: #fff; }

.rank-section .section-header p { color: rgba(255, 255, 255, 0.72); }

.rank-list {
  max-width: 860px;
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
}

.rank-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 22px 26px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  transition: var(--transition);
}

.rank-item:last-child { border-bottom: none; }

.rank-item:hover {
  background: rgba(255, 255, 255, 0.06);
}

.rank-no {
  width: 44px;
  height: 44px;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 6px 16px rgba(79, 109, 245, 0.3);
}

.rank-info { flex: 1; min-width: 0; }

.rank-info h4 {
  color: #fff;
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 4px;
  line-height: 1.45;
}

.rank-info p {
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
  margin: 0;
  line-height: 1.6;
}

.rank-heat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #fbbf24;
  font-size: 14px;
  font-weight: 600;
  padding: 6px 14px;
  background: rgba(251, 191, 36, 0.12);
  border-radius: 999px;
  white-space: nowrap;
}

.rank-heat i { font-size: 13px; }

/* ===== FAQ ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(79, 109, 245, 0.26);
  box-shadow: var(--shadow);
}

.faq-question {
  padding: 21px 26px;
  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);
  transition: var(--transition);
}

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

.faq-question i {
  color: var(--primary);
  font-size: 16px;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-question i { transform: rotate(45deg); }

.faq-answer {
  padding: 0 26px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  padding: 0 26px 22px;
  max-height: 400px;
}

.faq-answer p {
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.85;
  margin: 0;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

/* ===== CTA ===== */
.cta-section {
  padding: 0 0 88px;
  background: var(--bg);
}

.cta-box {
  background: linear-gradient(135deg, var(--primary) 0%, #7c5cf5 55%, #c85cf0 100%);
  border-radius: 24px;
  padding: 68px 54px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 70px rgba(79, 109, 245, 0.34);
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -20px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}

.cta-box::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: 30px;
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
}

.cta-box h2 {
  font-size: 33px;
  font-weight: 700;
  margin-bottom: 14px;
  position: relative;
  z-index: 2;
}

.cta-box p {
  font-size: 16px;
  opacity: 0.92;
  max-width: 580px;
  margin: 0 auto 34px;
  position: relative;
  z-index: 2;
  line-height: 1.8;
}

.cta-btns {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  padding: 15px 38px;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  line-height: 1.2;
}

.btn-white {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.14);
}

.btn-white:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.2);
  color: var(--primary);
}

.btn-ghost {
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.7);
  color: #fff;
}

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

.btn:active {
  transform: translateY(-1px) scale(0.98);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-dark);
  color: #bdc3d1;
  padding: 64px 0 28px;
}

.footer-grid { row-gap: 36px; }

.footer-brand .footer-logo {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: 1px;
  line-height: 1.3;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.85;
  opacity: 0.78;
  margin-bottom: 20px;
  max-width: 360px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: #bdc3d1;
  transition: var(--transition);
}

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

.site-footer h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
}

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

.footer-links a {
  color: #bdc3d1;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.footer-links a:hover {
  color: #fff;
  padding-left: 6px;
}

.footer-info p {
  font-size: 14px;
  color: #bdc3d1;
  margin-bottom: 8px;
  line-height: 1.7;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  padding-top: 24px;
  margin-top: 44px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  opacity: 0.7;
  margin: 0;
}

/* ===== 响应式 ===== */
@media screen and (max-width: 1024px) {
  .topic-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-wrapper { grid-template-columns: repeat(2, 1fr); }
  .feature-wrap { gap: 40px; }
}

@media screen and (max-width: 820px) {
  .header-nav a { padding: 8px 12px; font-size: 14px; }
  .brand-logo { font-size: 20px; }
  .page-hero h1 { font-size: 36px; }
}

@media screen and (max-width: 768px) {
  .section { padding: 64px 0; }
  .page-hero { padding: 68px 0 52px; }
  .page-hero h1 { font-size: 28px; letter-spacing: 1px; }
  .hero-sub { font-size: 15px !important; }

  .header-nav-left,
  .header-nav-right { display: none; }

  .brand-logo {
    position: static;
    transform: none;
    margin-right: auto;
    font-size: 20px;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .section-header h2 { font-size: 27px; }

  .section-header p { font-size: 15px; }

  .feature-wrap { grid-template-columns: 1fr; gap: 32px; }
  .feature-text h3 { font-size: 24px; }
  .feature-image img { min-height: 240px; }

  .cta-box { padding: 48px 24px; }
  .cta-box h2 { font-size: 26px; }

  .rank-item { padding: 18px 18px; gap: 14px; flex-wrap: wrap; }
  .rank-heat { margin-left: auto; }
}

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

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

  .topic-grid { grid-template-columns: 1fr; }
  .guide-grid { grid-template-columns: 1fr; }
  .steps-wrapper { grid-template-columns: 1fr; }

  .page-hero h1 { font-size: 25px; }
  .hero-breadcrumb { font-size: 13px; padding: 6px 14px; }

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

  .rank-info h4 { font-size: 15px; }
  .rank-info p { font-size: 13px; }
  .rank-no { width: 38px; height: 38px; font-size: 16px; }

  .cta-btns .btn { width: 100%; justify-content: center; }
  .faq-question { font-size: 15px; padding: 18px 20px; }
  .faq-answer { padding: 0 20px; }
  .faq-item.active .faq-answer { padding: 0 20px 18px; }
  .footer-bottom p { font-size: 12px; line-height: 1.6; }
}