/* roulang page: index */
:root {
  --primary: #6c5ce7;
  --primary-dark: #5a4bd1;
  --primary-light: #eeeafd;
  --accent: #f59e0b;
  --accent-light: #fff8ed;
  --bg: #f7f8fc;
  --card: #ffffff;
  --text: #1e2240;
  --text-muted: #6b7192;
  --border: #e7e9f2;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(30, 35, 60, 0.05);
  --shadow-md: 0 10px 30px rgba(30, 35, 60, 0.08);
  --shadow-lg: 0 20px 50px rgba(30, 35, 60, 0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-h: 72px;
  --container: 1200px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
body.nav-lock { overflow: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea { font-family: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
::selection { background: var(--primary); color: #fff; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn-sm { padding: 8px 20px; font-size: 14px; }
.btn-lg { padding: 16px 38px; font-size: 17px; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 16px rgba(108, 92, 231, 0.3); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(90, 75, 209, 0.35); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(90, 75, 209, 0.3); }
.btn-secondary { background: #fff; color: var(--primary); border-color: var(--primary); }
.btn-secondary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(108, 92, 231, 0.15); }
.btn-ghost { background: rgba(255, 255, 255, 0.08); color: #fff; border-color: rgba(255, 255, 255, 0.4); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.18); transform: translateY(-2px); }
.btn-accent { background: var(--accent); color: #1e2240; box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3); }
.btn-accent:hover { background: #e08e00; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4); }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid rgba(108, 92, 231, 0.4); outline-offset: 2px; }

/* Tags */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: var(--primary-light);
  color: var(--primary);
  transition: var(--transition);
}
.tag-accent { background: var(--accent-light); color: #c07600; }
.tag-green { background: #e8f7ee; color: #1e9e57; }
.tag:hover { transform: translateY(-1px); opacity: 0.85; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled { box-shadow: var(--shadow-md); }
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 16px;
  padding-bottom: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), #8b7cf6);
  color: #fff;
  font-size: 19px;
  box-shadow: 0 4px 14px rgba(108, 92, 231, 0.35);
}
.brand-name {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.3px;
  color: var(--text);
}
.brand-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--accent);
  color: #1e2240;
  letter-spacing: 0.5px;
}
.header-search {
  display: flex;
  align-items: center;
  background: #f3f4fa;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 4px 4px 4px 18px;
  flex: 1;
  max-width: 420px;
  transition: var(--transition);
}
.header-search:focus-within { background: #fff; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(108, 92, 231, 0.1); }
.header-search input {
  width: 100%;
  border: none;
  background: transparent;
  padding: 8px 0;
  font-size: 14px;
  color: var(--text);
  outline: none;
}
.header-search input::placeholder { color: #a0a6c2; }
.header-search button {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: var(--transition);
  flex-shrink: 0;
}
.header-search button:hover { background: var(--primary-dark); }
.header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.search-toggle { display: none; width: 42px; height: 42px; border-radius: 50%; background: var(--primary-light); color: var(--primary); align-items: center; justify-content: center; font-size: 16px; transition: var(--transition); }
.search-toggle:hover { background: var(--primary); color: #fff; }

/* Nav */
.header-nav { border-top: 1px solid var(--border); }
.nav-list {
  display: flex;
  gap: 6px;
  padding: 10px 0;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.nav-list::-webkit-scrollbar { display: none; }
.nav-link {
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
  transition: var(--transition);
  border: 1px solid transparent;
}
.nav-link:hover { color: var(--primary); background: var(--primary-light); }
.nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 4px 12px rgba(108, 92, 231, 0.3); }

/* Hero */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, rgba(20, 18, 55, 0.88) 0%, rgba(40, 32, 90, 0.75) 60%, rgba(70, 45, 120, 0.65) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  background-attachment: fixed;
  color: #fff;
  padding: 100px 0;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent, rgba(247, 248, 252, 1));
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; max-width: 760px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  padding: 7px 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: #f8f4ff;
  margin-bottom: 28px;
  backdrop-filter: blur(8px);
}
.hero-badge i { color: var(--accent); }
.hero h1 {
  font-size: clamp(38px, 6vw, 62px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -1.5px;
  margin-bottom: 18px;
}
.hero h1 .gradient-text {
  background: linear-gradient(120deg, #fff 30%, #c8b9ff 80%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.7;
  margin-bottom: 38px;
  max-width: 600px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 54px; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 0;
  max-width: 560px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 28px;
}
.hero-stat { padding-right: 40px; }
.hero-stat + .hero-stat { padding-left: 40px; border-left: 1px solid rgba(255, 255, 255, 0.18); }
.hero-stat strong {
  display: block;
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.hero-stat span { font-size: 13px; color: rgba(255, 255, 255, 0.7); }

/* Section Common */
.section { padding: 96px 0; }
.section + .section { padding-top: 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head .section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.section-title {
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 800;
  letter-spacing: -0.8px;
  line-height: 1.2;
  margin-bottom: 14px;
  color: var(--text);
}
.section-subtitle { font-size: 16px; color: var(--text-muted); line-height: 1.7; }

/* Features */
.features { background: var(--bg); }
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}
.feature-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 34px 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), #a78bfa);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 22px;
  transition: var(--transition);
}
.feature-card:hover .feature-icon { background: var(--primary); color: #fff; transform: scale(1.06); }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* Categories */
.categories { background: linear-gradient(180deg, var(--bg) 0%, #fff 100%); }
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.category-card {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.category-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.category-image { position: relative; height: 200px; overflow: hidden; }
.category-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.category-card:hover .category-image img { transform: scale(1.06); }
.category-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.45), transparent 60%);
}
.category-body { padding: 28px 26px; display: flex; flex-direction: column; flex: 1; }
.category-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.category-body p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 18px; flex: 1; }
.category-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.category-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  transition: var(--transition);
}
.category-link:hover { gap: 10px; }

/* News */
.news-section { background: var(--bg); }
.news-list { columns: 2; column-gap: 26px; }
.news-card {
  break-inside: avoid;
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 26px 26px 22px;
  margin-bottom: 26px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: block;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(108, 92, 231, 0.2); }
.news-card-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.news-date { font-size: 12px; color: var(--text-muted); display: flex; align-items: center; gap: 5px; }
.news-title { font-size: 17px; font-weight: 700; line-height: 1.45; margin-bottom: 10px; color: var(--text); transition: var(--transition); }
.news-card:hover .news-title { color: var(--primary); }
.news-desc { font-size: 14px; color: var(--text-muted); line-height: 1.65; margin-bottom: 16px; }
.news-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.news-link i { transition: transform 0.3s; }
.news-card:hover .news-link i { transform: translateX(4px); }
.empty-tip {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px dashed var(--border);
  padding: 50px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 15px;
  grid-column: 1 / -1;
}
.news-more { text-align: center; margin-top: 40px; }

/* Rank Section */
.rank-section {
  background: linear-gradient(135deg, rgba(20, 18, 55, 0.92), rgba(45, 35, 100, 0.88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
  padding: 100px 0;
}
.rank-section .section-title { color: #fff; }
.rank-section .section-subtitle { color: rgba(255, 255, 255, 0.7); }
.rank-section .section-eyebrow { background: rgba(255, 255, 255, 0.12); color: #e6deff; }
.rank-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 48px; align-items: center; }
.rank-list { display: flex; flex-direction: column; gap: 12px; }
.rank-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  padding: 15px 20px;
  transition: var(--transition);
  backdrop-filter: blur(6px);
}
.rank-item:hover { background: rgba(255, 255, 255, 0.14); transform: translateX(4px); }
.rank-num {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-weight: 800;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.rank-item:first-child .rank-num { background: var(--accent); color: #1e2240; }
.rank-info { flex: 1; min-width: 0; }
.rank-info h4 { font-size: 16px; font-weight: 700; margin-bottom: 2px; }
.rank-info p { font-size: 13px; color: rgba(255, 255, 255, 0.65); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rank-heat { font-size: 13px; font-weight: 700; color: #ffc96b; display: flex; align-items: center; gap: 5px; white-space: nowrap; }
.rank-side { background: rgba(255, 255, 255, 0.07); border-radius: var(--radius); padding: 34px; border: 1px solid rgba(255, 255, 255, 0.1); }
.rank-side h3 { font-size: 19px; font-weight: 700; margin-bottom: 20px; display: flex; align-items: center; gap: 8px; }
.hot-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.hot-tags .tag { background: rgba(255, 255, 255, 0.1); color: #e0d8ff; border: 1px solid rgba(255, 255, 255, 0.14); }
.hot-tags .tag:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-2px); }

/* Process */
.process-section { background: #fff; }
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.process-step {
  position: relative;
  text-align: center;
  padding: 44px 28px 36px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.process-step:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.process-step-num {
  position: absolute;
  top: -18px;
  left: 50%;
  transform: translateX(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(108, 92, 231, 0.4);
  font-size: 14px;
}
.process-step-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  margin: 0 auto 18px;
  background: var(--card);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: var(--shadow-sm);
}
.process-step h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.process-step p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* FAQ */
.faq-section { background: var(--bg); }
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
  background: var(--card);
  border-radius: 14px;
  border: 1px solid var(--border);
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.faq-item.active { border-color: rgba(108, 92, 231, 0.3); box-shadow: var(--shadow-md); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  background: transparent;
  transition: var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
  transition: var(--transition);
}
.faq-item.active .faq-icon { background: var(--primary); color: #fff; transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease; }
.faq-answer-inner { padding: 0 24px 22px; color: var(--text-muted); font-size: 14px; line-height: 1.75; }

/* CTA */
.cta-section { padding: 100px 0; background: linear-gradient(135deg, rgba(20, 18, 55, 0.9), rgba(60, 40, 120, 0.85)), url('/assets/images/backpic/back-3.png') center/cover no-repeat; color: #fff; text-align: center; }
.cta-inner { max-width: 680px; margin: 0 auto; }
.cta-title { font-size: clamp(28px, 4vw, 42px); font-weight: 800; line-height: 1.2; margin-bottom: 14px; }
.cta-subtitle { font-size: 16px; color: rgba(255, 255, 255, 0.8); margin-bottom: 36px; }
.cta-buttons { display: flex; justify-content: center; flex-wrap: wrap; gap: 16px; }

/* Footer */
.site-footer { background: #12143a; color: rgba(255, 255, 255, 0.75); padding: 80px 0 0; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px; padding-bottom: 50px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.footer-brand .brand-name { color: #fff; }
.footer-brand .brand-icon { background: linear-gradient(135deg, var(--primary), #a78bfa); }
.footer-brand p { font-size: 14px; line-height: 1.7; margin-top: 18px; color: rgba(255, 255, 255, 0.6); max-width: 320px; }
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 22px;
  position: relative;
  padding-bottom: 12px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 26px;
  height: 3px;
  border-radius: 3px;
  background: var(--primary);
}
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.footer-col ul a:hover { color: var(--primary); }
.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}
.footer-bottom a { color: rgba(255, 255, 255, 0.5); transition: var(--transition); }
.footer-bottom a:hover { color: #fff; }

/* Back to top */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: var(--transition);
  z-index: 99;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--primary-dark); transform: translateY(-4px); }

/* Responsive */
@media (max-width: 1024px) {
  .container { padding: 0 20px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); gap: 22px; }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .rank-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 768px) {
  :root { --header-h: 60px; }
  .section { padding: 72px 0; }
  .header-top { flex-wrap: wrap; gap: 12px; padding-top: 12px; padding-bottom: 12px; }
  .header-search { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; border-radius: 0; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-sm); padding: 12px 20px; max-width: none; z-index: 100; }
  .header-search.open { display: flex; }
  .header-search:focus-within { box-shadow: none; border-color: transparent; }
  .search-toggle { display: flex; }
  .header-actions { gap: 8px; }
  .hero { min-height: auto; padding: 90px 0; background-attachment: scroll; }
  .hero-stats { grid-template-columns: 1fr 1fr 1fr; }
  .hero-stat { padding-right: 16px; }
  .hero-stat + .hero-stat { padding-left: 16px; }
  .hero-stat strong { font-size: 24px; }
  .hero-stat span { font-size: 11px; }
  .news-list { columns: 1; }
  .process-grid { grid-template-columns: 1fr; gap: 36px; }
  .category-card { height: auto; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .brand-name { font-size: 17px; }
  .brand-badge { font-size: 10px; padding: 2px 8px; }
  .btn { padding: 10px 20px; font-size: 14px; }
  .btn-lg { padding: 14px 28px; font-size: 15px; }
  .hero h1 { font-size: 34px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { grid-template-columns: 1fr 1fr 1fr; gap: 0; }
  .hero-stat { padding: 0 8px; text-align: center; }
  .hero-stat + .hero-stat { padding-left: 8px; }
  .features-grid { grid-template-columns: 1fr; }
  .categories-grid { grid-template-columns: 1fr; }
  .rank-item { padding: 12px 14px; gap: 10px; }
  .rank-info p { font-size: 12px; }
  .category-image { height: 170px; }
  .news-card { padding: 20px 18px 16px; }
  .faq-question { font-size: 15px; padding: 17px 18px; }
  .cta-section { padding: 72px 0; }
}

/* roulang page: article */
:root {
            --primary: #6C5CE7;
            --primary-dark: #5749C9;
            --primary-light: #EEECFD;
            --accent: #00B894;
            --accent-dark: #009A7E;
            --accent-light: #E6FAF5;
            --warning: #F39C12;
            --danger: #E74C3C;
            --bg: #F6F7FB;
            --surface: #FFFFFF;
            --surface-dark: #171A26;
            --text: #1A1D29;
            --text-weak: #667085;
            --border: #E7E9F2;
            --radius-sm: 10px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 10px rgba(23,26,38,.06);
            --shadow: 0 10px 32px rgba(23,26,38,.1);
            --shadow-lg: 0 20px 50px rgba(108,92,231,.2);
            --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, sans-serif;
            --container: 1200px;
            --trans: .3s cubic-bezier(.4, 0, .2, 1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--trans);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--trans);
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #8D6BF7);
            color: #fff;
            box-shadow: 0 8px 24px rgba(108, 92, 231, .3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(108, 92, 231, .42);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-light {
            background: #fff;
            color: var(--primary);
        }
        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 13px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 4px 14px;
            border-radius: 30px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
        }
        .tag-green {
            background: var(--accent-light);
            color: var(--accent-dark);
        }
        .tag-warm {
            background: #FEF3E2;
            color: #B9770E;
        }
        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), #8D6BF7);
            color: #fff;
            border-radius: 11px;
            font-size: 17px;
            box-shadow: 0 5px 14px rgba(108, 92, 231, .35);
        }
        .brand-name {
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: .5px;
        }
        .brand-badge {
            background: linear-gradient(135deg, var(--accent), #00CEA6);
            color: #fff;
            font-size: 11px;
            padding: 2px 10px;
            border-radius: 30px;
            font-weight: 700;
            letter-spacing: 1px;
        }
        .header-search {
            flex: 1;
            max-width: 380px;
            display: flex;
            margin-left: auto;
        }
        .header-search input {
            flex: 1;
            height: 42px;
            padding: 0 18px;
            border: 1px solid var(--border);
            border-radius: 24px 0 0 24px;
            background: var(--bg);
            font-size: 14px;
            transition: border-color var(--trans), box-shadow var(--trans), background var(--trans);
        }
        .header-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(108, 92, 231, .14);
        }
        .header-search button {
            width: 46px;
            height: 42px;
            border-radius: 0 24px 24px 0;
            background: linear-gradient(135deg, var(--primary), #8D6BF7);
            color: #fff;
            cursor: pointer;
            font-size: 14px;
            transition: opacity var(--trans);
        }
        .header-search button:hover {
            opacity: .88;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg);
            color: var(--text);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all var(--trans);
        }
        .search-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .header-nav {
            border-top: 1px solid var(--border);
            background: #fff;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 8px 0;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-list::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-weak);
            white-space: nowrap;
            transition: all var(--trans);
        }
        .nav-link i {
            font-size: 13px;
            opacity: .75;
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), #8D6BF7);
            box-shadow: 0 5px 16px rgba(108, 92, 231, .32);
            font-weight: 600;
        }
        .nav-link.active i {
            opacity: 1;
        }
        /* ===== Banner ===== */
        .page-banner {
            position: relative;
            padding: 62px 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(23, 26, 38, .85) 0%, rgba(108, 92, 231, .55) 60%, rgba(0, 184, 148, .35) 100%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .banner-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, .8);
            margin-bottom: 12px;
        }
        .banner-breadcrumb a:hover {
            color: #fff;
        }
        .banner-breadcrumb i {
            font-size: 10px;
        }
        .page-banner h1 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 10px;
            line-height: 1.3;
            text-shadow: 0 4px 20px rgba(0, 0, 0, .25);
        }
        .page-banner p {
            font-size: 15px;
            color: rgba(255, 255, 255, .82);
            max-width: 620px;
        }
        /* ===== Article Layout ===== */
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 350px;
            gap: 36px;
            padding-top: 40px;
            padding-bottom: 60px;
        }
        .article-main {
            min-width: 0;
        }
        .article-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 34px 38px 40px;
            border: 1px solid rgba(231, 233, 242, .6);
        }
        .article-header {
            margin-bottom: 26px;
        }
        .article-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 16px;
            border-radius: 30px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .article-title {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.4;
            color: var(--text);
            margin-bottom: 14px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            color: var(--text-weak);
            font-size: 13px;
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i {
            color: var(--primary);
            opacity: .75;
        }
        .article-cover {
            border-radius: var(--radius);
            overflow: hidden;
            margin-bottom: 26px;
            position: relative;
        }
        .article-cover img {
            width: 100%;
            aspect-ratio: 16 / 7;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .article-cover:hover img {
            transform: scale(1.03);
        }
        .article-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(23, 26, 38, .18), transparent 45%);
            pointer-events: none;
        }
        .article-content {
            font-size: 16px;
            line-height: 1.95;
            color: #2C3242;
        }
        .article-content p {
            margin-bottom: 20px;
        }
        .article-content h2 {
            font-size: 23px;
            font-weight: 800;
            margin: 34px 0 14px;
            color: var(--text);
            position: relative;
            padding-left: 15px;
        }
        .article-content h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 4px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
        }
        .article-content h3 {
            font-size: 19px;
            font-weight: 700;
            margin: 26px 0 10px;
            color: var(--text);
        }
        .article-content ul,
        .article-content ol {
            margin: 0 0 20px;
            padding-left: 24px;
        }
        .article-content ul li,
        .article-content ol li {
            padding: 5px 0;
            position: relative;
        }
        .article-content ul li::before {
            content: '\f111';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 6px;
            color: var(--primary);
            position: absolute;
            left: -16px;
            top: 15px;
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 18px 22px;
            border-radius: 0 14px 14px 0;
            margin: 24px 0;
            color: #444B5A;
            font-size: 15px;
        }
        .article-content blockquote p {
            margin-bottom: 0;
        }
        .article-content img {
            border-radius: 14px;
            margin: 20px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-content a {
            color: var(--primary);
            border-bottom: 1px solid rgba(108, 92, 231, .35);
            transition: border-color var(--trans);
        }
        .article-content a:hover {
            border-color: var(--primary);
            color: var(--primary-dark);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 22px 0;
            font-size: 14px;
            border-radius: 10px;
            overflow: hidden;
        }
        .article-content th,
        .article-content td {
            border: 1px solid var(--border);
            padding: 12px 16px;
            text-align: left;
        }
        .article-content th {
            background: var(--bg);
            font-weight: 700;
            color: var(--text);
        }
        /* ===== Not Found ===== */
        .not-found-card {
            text-align: center;
            padding: 70px 40px;
        }
        .not-found-icon {
            width: 90px;
            height: 90px;
            margin: 0 auto 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
            color: var(--primary);
            font-size: 38px;
        }
        .not-found-card h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .not-found-card p {
            color: var(--text-weak);
            margin-bottom: 28px;
            font-size: 15px;
        }
        /* ===== Sidebar ===== */
        .article-side {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .side-widget {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 26px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(231, 233, 242, .5);
        }
        .side-widget-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            padding-bottom: 14px;
            border-bottom: 2px solid var(--bg);
        }
        .side-widget-title i {
            color: var(--primary);
            font-size: 15px;
        }
        .side-intro p {
            font-size: 13.5px;
            color: var(--text-weak);
            line-height: 1.85;
        }
        .side-intro .side-intro-points {
            margin-top: 16px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .side-intro .side-intro-points li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text);
        }
        .side-intro .side-intro-points i {
            color: var(--accent);
            font-size: 12px;
        }
        .side-cats {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .side-cats a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 14px;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            background: var(--bg);
            transition: all var(--trans);
            border: 1px solid transparent;
        }
        .side-cats a i {
            width: 26px;
            height: 26px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            flex-shrink: 0;
        }
        .side-cats a:hover {
            background: var(--primary-light);
            border-color: rgba(108, 92, 231, .25);
            transform: translateX(4px);
            color: var(--primary);
        }
        .side-news li {
            padding: 12px 0;
            border-bottom: 1px dashed var(--border);
        }
        .side-news li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .side-news a {
            display: block;
            font-size: 13.5px;
            font-weight: 500;
            color: var(--text);
            line-height: 1.55;
            transition: color var(--trans);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .side-news a:hover {
            color: var(--primary);
        }
        .side-news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 5px;
            font-size: 12px;
            color: var(--text-weak);
        }
        .side-news-meta i {
            font-size: 10px;
            color: var(--accent);
        }
        .side-cta {
            background: linear-gradient(135deg, var(--primary), #8D6BF7);
            color: #fff;
            border: none;
        }
        .side-cta .side-widget-title i {
            color: rgba(255, 255, 255, .8);
        }
        .side-cta .side-widget-title {
            border-bottom-color: rgba(255, 255, 255, .2);
        }
        .side-cta p {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 18px;
        }
        .side-cta .btn {
            width: 100%;
        }
        /* ===== Related ===== */
        .related-section {
            padding: 56px 0 64px;
            background: var(--surface);
            border-top: 1px solid var(--border);
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 30px;
        }
        .section-head h2 {
            font-size: 26px;
            font-weight: 800;
            position: relative;
            padding-left: 16px;
        }
        .section-head h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
        }
        .section-head p {
            color: var(--text-weak);
            font-size: 14px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }
        .related-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--trans);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(108, 92, 231, .3);
        }
        .related-thumb {
            position: relative;
            overflow: hidden;
        }
        .related-thumb img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .related-card:hover .related-thumb img {
            transform: scale(1.06);
        }
        .related-body {
            padding: 16px 18px 18px;
        }
        .related-body .tag {
            margin-bottom: 10px;
        }
        .related-body h3 {
            font-size: 15px;
            font-weight: 650;
            color: var(--text);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--trans);
        }
        .related-card:hover .related-body h3 {
            color: var(--primary);
        }
        .empty-tip {
            text-align: center;
            color: var(--text-weak);
            padding: 40px 0;
            font-size: 14px;
        }
        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 70px 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(23, 26, 38, .88), rgba(108, 92, 231, .7));
        }
        .cta-box {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-box p {
            color: rgba(255, 255, 255, .82);
            margin-bottom: 30px;
            font-size: 15px;
        }
        .cta-btns {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--surface-dark);
            color: #9CA3AF;
            padding: 64px 0 0;
            font-size: 14px;
        }
        .site-footer .brand .brand-name {
            color: #fff;
        }
        .site-footer .brand .brand-icon {
            background: linear-gradient(135deg, var(--primary), var(--accent));
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 42px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand p {
            margin-top: 18px;
            line-height: 1.75;
            color: #7C838F;
            max-width: 360px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col a {
            color: #9CA3AF;
            font-size: 13.5px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--trans);
        }
        .footer-col a i {
            font-size: 10px;
            color: var(--primary);
            transition: transform var(--trans);
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 3px;
        }
        .footer-col a:hover i {
            transform: translateX(3px);
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding: 24px 0;
            font-size: 13px;
            color: #6B7280;
            flex-wrap: wrap;
        }
        .footer-bottom span:last-child {
            color: rgba(255, 255, 255, .4);
        }
        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr 300px;
                gap: 26px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 860px) {
            .article-layout {
                grid-template-columns: 1fr;
                padding-top: 28px;
            }
            .article-side {
                flex-direction: column;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .site-footer .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }
        @media (max-width: 768px) {
            .header-search {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                max-width: 100%;
                padding: 14px 20px;
                background: #fff;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow);
                z-index: 99;
                border-radius: 0 0 16px 16px;
            }
            .header-search.active {
                display: flex;
            }
            .search-toggle {
                display: inline-flex;
            }
            .header-top {
                height: 60px;
                gap: 12px;
            }
            .brand-name {
                font-size: 18px;
            }
            .brand-badge {
                font-size: 10px;
                padding: 1px 8px;
            }
            .nav-link {
                padding: 8px 16px;
                font-size: 13px;
            }
            .page-banner {
                padding: 44px 0;
            }
            .page-banner h1 {
                font-size: 26px;
            }
            .article-card {
                padding: 24px 20px 28px;
                border-radius: 18px;
            }
            .article-title {
                font-size: 23px;
            }
            .article-content {
                font-size: 15px;
            }
            .article-content h2 {
                font-size: 20px;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
            .section-head h2 {
                font-size: 22px;
            }
            .related-section {
                padding: 44px 0 50px;
            }
            .cta-section {
                padding: 54px 0;
            }
            .cta-box h2 {
                font-size: 26px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .brand-name {
                font-size: 16px;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 14px;
                border-radius: 9px;
            }
            .brand-badge {
                display: none;
            }
            .header-actions .btn {
                padding: 7px 14px;
                font-size: 12px;
            }
            .article-side {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .site-footer .footer-top {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                padding: 20px 0;
            }
            .page-banner {
                padding: 36px 0;
            }
            .page-banner h1 {
                font-size: 22px;
            }
            .page-banner p {
                font-size: 13px;
            }
            .article-cover img {
                aspect-ratio: 4 / 3;
            }
            .article-meta {
                gap: 10px;
                font-size: 12px;
            }
            .cta-btns {
                flex-direction: column;
                align-items: center;
            }
            .cta-btns .btn {
                width: 100%;
                max-width: 280px;
            }
            .not-found-card {
                padding: 50px 20px;
            }
        }
        @media (max-width: 360px) {
            .brand-name {
                font-size: 15px;
            }
            .nav-link {
                padding: 7px 12px;
                font-size: 12px;
            }
            .article-title {
                font-size: 20px;
            }
        }

/* roulang page: category1 */
:root {
  --clr-primary: #4f46e5;
  --clr-primary-dark: #4338ca;
  --clr-primary-light: #eef2ff;
  --clr-accent: #f59e0b;
  --clr-accent-dark: #d97706;
  --clr-danger: #ef4444;
  --clr-bg: #f5f7fb;
  --clr-surface: #ffffff;
  --clr-text: #1e293b;
  --clr-text-soft: #64748b;
  --clr-text-light: #94a3b8;
  --clr-border: #e2e8f0;
  --clr-dark: #0f172a;
  --grad-primary: linear-gradient(135deg, #6366f1, #8b5cf6);
  --grad-accent: linear-gradient(135deg, #f59e0b, #ef4444);
  --grad-dark: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 8px 30px rgba(15, 23, 42, .08);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, .12);
  --shadow-brand: 0 10px 30px rgba(79, 70, 229, .25);
  --space: 24px;
  --header-h: 62px;
  --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.7;
  color: var(--clr-text);
  background: var(--clr-bg);
  -webkit-font-smoothing: antialiased;
}

body.no-scroll {
  overflow: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color .2s ease;
}

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

input, textarea, select {
  font-family: inherit;
  font-size: 14px;
  outline: none;
}

ul, ol {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding: 84px 0;
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 52px;
}

.section-head .tagline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--clr-primary-light);
  color: var(--clr-primary);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 30px;
  margin-bottom: 16px;
  letter-spacing: .5px;
}

.section-head .tagline i {
  font-size: 12px;
}

.section-head h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.5px;
  color: var(--clr-text);
}

.section-head p {
  color: var(--clr-text-soft);
  font-size: 16px;
  margin-top: 14px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  padding: 12px 24px;
  border-radius: 999px;
  border: 2px solid transparent;
  transition: all .25s ease;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn i {
  font-size: 14px;
}

.btn-sm {
  font-size: 13px;
  padding: 9px 20px;
}

.btn-lg {
  font-size: 16px;
  padding: 15px 36px;
}

.btn-primary {
  background: var(--clr-primary);
  color: #fff;
  border-color: var(--clr-primary);
  box-shadow: 0 6px 20px rgba(79, 70, 229, .28);
}

.btn-primary:hover {
  background: var(--clr-primary-dark);
  border-color: var(--clr-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(79, 70, 229, .34);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(79, 70, 229, .25);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, .55);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, .12);
  border-color: #fff;
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--clr-accent);
  color: #fff;
  border-color: var(--clr-accent);
  box-shadow: 0 6px 20px rgba(245, 158, 11, .32);
}

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

button:focus-visible, a:focus-visible, input:focus-visible {
  outline: 3px solid rgba(79, 70, 229, .4);
  outline-offset: 2px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  box-shadow: 0 1px 12px rgba(15, 23, 42, .06);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  flex-shrink: 0;
  text-decoration: none;
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--grad-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 6px 16px rgba(99, 102, 241, .35);
}

.brand-name {
  font-size: 21px;
  font-weight: 800;
  color: var(--clr-text);
  letter-spacing: -0.3px;
  line-height: 1;
}

.brand-badge {
  background: var(--grad-accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 30px;
  letter-spacing: .3px;
}

.header-search {
  flex: 1;
  max-width: 440px;
  height: 42px;
  background: #f1f5f9;
  border: 1px solid transparent;
  border-radius: 30px;
  display: flex;
  align-items: center;
  padding-left: 18px;
  transition: all .25s ease;
}

.header-search:focus-within {
  background: #fff;
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, .12);
}

.header-search input {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--clr-text);
  font-size: 14px;
}

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

.header-search button {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
  font-size: 15px;
  transition: background .2s ease;
}

.header-search button:hover {
  background: rgba(79, 70, 229, .1);
}

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

.search-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #f1f5f9;
  color: var(--clr-text);
  font-size: 15px;
  align-items: center;
  justify-content: center;
  transition: all .2s ease;
}

.search-toggle:hover {
  background: var(--clr-primary-light);
  color: var(--clr-primary);
}

.header-nav {
  border-top: 1px solid #eef2f7;
  background: #fafbfc;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  white-space: nowrap;
  padding: 6px 24px;
  max-width: 1200px;
  margin: 0 auto;
  list-style: none;
}

.nav-list::-webkit-scrollbar {
  display: none;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  font-size: 14.5px;
  font-weight: 500;
  color: #475569;
  border-radius: 30px;
  transition: all .2s ease;
  text-decoration: none;
}

.nav-link i {
  font-size: 12px;
  opacity: .65;
}

.nav-link:hover {
  color: var(--clr-primary);
  background: var(--clr-primary-light);
}

.nav-link.active {
  color: var(--clr-primary);
  background: var(--clr-primary-light);
  font-weight: 700;
}

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  padding: 90px 0 100px;
  background: linear-gradient(130deg, rgba(15, 23, 42, .92) 0%, rgba(30, 27, 75, .82) 55%, rgba(79, 70, 229, .62) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}

.page-hero::after {
  content: "";
  position: absolute;
  right: -100px;
  top: -50px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(139, 92, 246, .35), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

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

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: rgba(255, 255, 255, .72);
  margin-bottom: 22px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, .85);
  transition: color .2s ease;
}

.breadcrumb a:hover {
  color: #fff;
}

.breadcrumb i {
  font-size: 10px;
  opacity: .7;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .18);
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
  backdrop-filter: blur(6px);
}

.hero-tag i {
  font-size: 12px;
  color: #fbbf24;
}

.page-hero h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 18px;
}

.page-hero h1 span {
  background: var(--grad-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-hero .lead {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .82);
  max-width: 620px;
  margin-bottom: 30px;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255, 255, 255, .68);
}

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

.hero-meta i {
  font-size: 13px;
  opacity: .8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 34px;
  flex-wrap: wrap;
}

/* ===== Steps ===== */
.steps-section {
  background: var(--clr-surface);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.step-card {
  position: relative;
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 34px 24px 28px;
  transition: all .3s ease;
  overflow: hidden;
}

.step-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--grad-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s ease;
}

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

.step-card:hover::before {
  transform: scaleX(1);
}

.step-num {
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 18px;
  display: block;
}

.step-icon {
  position: absolute;
  top: 30px;
  right: 22px;
  width: 52px;
  height: 52px;
  background: var(--clr-surface);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
  font-size: 20px;
  border: 1px solid var(--clr-border);
  box-shadow: var(--shadow);
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.2px;
}

.step-card p {
  font-size: 14px;
  color: var(--clr-text-soft);
  line-height: 1.7;
}

/* ===== Guides Grid ===== */
.guides-section {
  background: var(--clr-bg);
}

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

.guide-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all .3s ease;
}

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

.guide-cover {
  position: relative;
  aspect-ratio: 16 / 9.5;
  overflow: hidden;
}

.guide-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

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

.guide-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, .35), transparent 45%);
}

.guide-badge {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 2;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(4px);
  color: var(--clr-primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 30px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 12px rgba(15, 23, 42, .15);
}

.guide-body {
  padding: 22px 24px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.guide-body h3 {
  font-size: 17.5px;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 10px;
  letter-spacing: -0.2px;
}

.guide-body h3 a {
  color: var(--clr-text);
  transition: color .2s ease;
}

.guide-body h3 a:hover {
  color: var(--clr-primary);
}

.guide-body p {
  font-size: 14px;
  color: var(--clr-text-soft);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.guide-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--clr-text-light);
  padding-top: 14px;
  border-top: 1px solid #f1f5f9;
}

.guide-footer .views i,
.guide-footer .date i {
  margin-right: 5px;
  font-size: 12px;
}

/* ===== Rank ===== */
.rank-section {
  background: var(--clr-surface);
}

.rank-wrap {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 36px;
  align-items: start;
}

.rank-card {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 32px 34px;
}

.rank-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 24px;
}

.rank-title i {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--grad-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  box-shadow: var(--shadow-brand);
}

.rank-list {
  list-style: none;
}

.rank-list li {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 15px 4px;
  border-bottom: 1px solid var(--clr-border);
  transition: all .2s ease;
  cursor: pointer;
}

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

.rank-list li:hover {
  padding-left: 10px;
  background: rgba(79, 70, 229, .03);
  border-radius: 8px;
}

.rank-num {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: #e9eef5;
  color: var(--clr-text-soft);
  font-size: 14px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.rank-list li:nth-child(1) .rank-num {
  background: var(--grad-accent);
  color: #fff;
}

.rank-list li:nth-child(2) .rank-num {
  background: linear-gradient(135deg, #f97316, #fbbf24);
  color: #fff;
}

.rank-list li:nth-child(3) .rank-num {
  background: linear-gradient(135deg, #64748b, #94a3b8);
  color: #fff;
}

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

.rank-info h4 {
  font-size: 15px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-bottom: 3px;
}

.rank-stats {
  font-size: 13px;
  color: var(--clr-text-light);
  display: flex;
  align-items: center;
  gap: 14px;
}

.rank-stats i {
  font-size: 11px;
  margin-right: 3px;
}

.rank-tooltip {
  margin-left: auto;
  color: var(--clr-primary);
  font-size: 14px;
  flex-shrink: 0;
}

.tip-card {
  background: var(--grad-dark);
  border-radius: var(--radius-lg);
  padding: 34px 32px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.tip-card::before {
  content: "\f6a9";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 90px;
  position: absolute;
  right: -18px;
  bottom: -24px;
  opacity: .12;
  color: #fff;
}

.tip-card .tip-tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(255, 255, 255, .14);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 30px;
  margin-bottom: 18px;
}

.tip-card .tip-tag i {
  color: #fbbf24;
}

.tip-card h3 {
  font-size: 21px;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}

.tip-card p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .78);
  margin-bottom: 20px;
}

.tip-board {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255, 255, 255, .08);
  border-radius: 12px;
  padding: 12px 16px;
  font-size: 13px;
  color: rgba(255, 255, 255, .85);
  border: 1px solid rgba(255, 255, 255, .1);
}

.tip-board i {
  font-size: 20px;
  color: #fbbf24;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--clr-bg);
}

.faq-wrap {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: 14px;
  margin-bottom: 16px;
  overflow: hidden;
  transition: all .3s ease;
}

.faq-item:hover {
  border-color: rgba(79, 70, 229, .25);
  box-shadow: var(--shadow);
}

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--clr-text);
  background: transparent;
  transition: all .2s ease;
  cursor: pointer;
  gap: 16px;
}

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

.faq-q .faq-icon {
  width: 30px;
  height: 30px;
  background: var(--clr-primary-light);
  color: var(--clr-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: all .35s ease;
}

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

.faq-a {
  max-height: 0;
  overflow: hidden;
  padding: 0 24px;
  transition: max-height .4s ease, padding .4s ease;
}

.faq-item.open .faq-a {
  max-height: 400px;
  padding: 0 24px 22px;
}

.faq-a div {
  font-size: 14.5px;
  color: var(--clr-text-soft);
  line-height: 1.8;
  border-top: 1px solid #f1f5f9;
  padding-top: 16px;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, rgba(15, 23, 42, .94) 0%, rgba(67, 56, 202, .88) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: 90px 0;
  color: #fff;
  text-align: center;
  overflow: hidden;
}

.cta-section::before {
  content: "\f11b";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 200px;
  position: absolute;
  left: -40px;
  top: -30px;
  opacity: .06;
  color: #fff;
}

.cta-section h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.6px;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 16px;
  color: rgba(255, 255, 255, .78);
  max-width: 600px;
  margin: 0 auto 34px;
}

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

/* ===== Footer ===== */
.site-footer {
  background: #0b1120;
  color: #94a3b8;
  padding-top: 56px;
  font-size: 14px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.footer-brand .brand {
  margin-bottom: 16px;
}

.footer-brand .brand-name {
  color: #fff;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.9;
  color: #94a3b8;
  margin-top: 14px;
  max-width: 360px;
}

.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: .5px;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul a {
  color: #94a3b8;
  font-size: 14px;
  transition: all .2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-col ul a i {
  font-size: 11px;
  opacity: .6;
  transition: transform .2s ease;
}

.footer-col ul a:hover {
  color: #fff;
}

.footer-col ul a:hover i {
  transform: translateX(4px);
  opacity: 1;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0 26px;
  font-size: 13px;
  color: #64748b;
  flex-wrap: wrap;
  gap: 10px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .section {
    padding: 64px 0;
  }

  .page-hero {
    padding: 70px 0 80px;
  }

  .page-hero h1 {
    font-size: 38px;
  }

  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .guides-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .rank-wrap {
    grid-template-columns: 1fr;
  }

  .tip-card {
    padding: 28px 26px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 50px 0;
  }

  .section-head {
    margin-bottom: 38px;
  }

  .section-head h2 {
    font-size: 28px;
  }

  .header-search {
    display: none;
    position: absolute;
    top: 62px;
    left: 0;
    right: 0;
    max-width: 100%;
    margin: 0;
    border-radius: 0;
    background: #fff;
    border-bottom: 1px solid var(--clr-border);
    box-shadow: 0 16px 30px rgba(15, 23, 42, .1);
    height: 52px;
    padding-left: 18px;
    z-index: 99;
  }

  .header-search.show {
    display: flex;
  }

  .search-toggle {
    display: inline-flex;
  }

  .header-actions .btn {
    display: none;
  }

  .header-top {
    padding: 10px 16px;
  }

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

  .brand-badge {
    font-size: 10px;
    padding: 2px 8px;
  }

  .nav-list {
    padding: 6px 16px;
    gap: 2px;
  }

  .nav-link {
    padding: 8px 14px;
    font-size: 13.5px;
  }

  .page-hero {
    padding: 56px 0 66px;
  }

  .page-hero h1 {
    font-size: 30px;
  }

  .page-hero .lead {
    font-size: 15px;
  }

  .hero-meta {
    gap: 14px;
    font-size: 12px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .step-card {
    padding: 26px 20px 22px;
  }

  .guides-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .guide-body {
    padding: 18px 18px 16px;
  }

  .rank-card {
    padding: 22px 20px;
  }

  .rank-list li {
    align-items: flex-start;
  }

  .rank-info h4 {
    white-space: normal;
    line-height: 1.4;
  }

  .rank-tooltip {
    display: none;
  }

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

  .faq-a {
    font-size: 14px;
  }

  .cta-section {
    padding: 64px 0;
  }

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

  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

@media (max-width: 520px) {
  .section-head h2 {
    font-size: 24px;
  }

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

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

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .step-icon {
    width: 44px;
    height: 44px;
    font-size: 16px;
    top: 24px;
  }

  .step-num {
    font-size: 34px;
  }

  .guide-body h3 {
    font-size: 16px;
  }

  .rank-title {
    font-size: 16px;
  }

  .rank-stats {
    flex-wrap: wrap;
    gap: 6px;
  }

  .tip-board {
    flex-direction: column;
    text-align: center;
    gap: 10px;
  }

  .brand-badge {
    display: none;
  }
}

/* roulang page: category2 */
:root {
  --primary: #6c5ce7;
  --primary-dark: #5a4bd1;
  --primary-light: #8b7bf5;
  --accent: #fd79a8;
  --accent-light: #ffe0ec;
  --bg: #f8f9fe;
  --bg-deep: #14162a;
  --bg-card: #ffffff;
  --text: #1e2130;
  --text-weak: #7a7f95;
  --border: #e8e9f2;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 40px rgba(30, 33, 48, .08);
  --shadow-hover: 0 16px 44px rgba(108, 92, 231, .16);
  --transition: all .3s ease;
  --container-w: 1200px;
}

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

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
  line-height: 1.4;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 6px 20px rgba(108, 92, 231, .32);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(108, 92, 231, .42);
}
.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(108, 92, 231, .06);
}
.btn-light {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 6px 24px rgba(0, 0, 0, .12);
}
.btn-light:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, .2);
}
.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
  border-radius: 10px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 11px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 19px;
  box-shadow: 0 4px 16px rgba(108, 92, 231, .35);
}
.brand-name {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .5px;
  color: var(--text);
}
.brand-badge {
  background: var(--accent-light);
  color: #d63031;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  letter-spacing: 1px;
}
.header-search {
  display: flex;
  align-items: center;
  background: #f1f2fa;
  border-radius: 12px;
  border: 2px solid transparent;
  transition: var(--transition);
  flex: 1;
  max-width: 380px;
}
.header-search:focus-within {
  border-color: var(--primary);
  background: #fff;
}
.header-search input {
  flex: 1;
  background: transparent;
  padding: 10px 16px;
  font-size: 14px;
  color: var(--text);
  min-width: 0;
}
.header-search button {
  width: 46px;
  height: 44px;
  background: transparent;
  color: var(--text-weak);
  font-size: 16px;
  cursor: pointer;
  border-radius: 10px;
}
.header-search button:hover {
  color: var(--primary);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.search-toggle {
  display: none;
  width: 42px;
  height: 42px;
  background: #f1f2fa;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  color: var(--text);
  font-size: 16px;
  cursor: pointer;
}
.search-toggle:hover {
  color: var(--primary);
}

/* ===== 导航 ===== */
.header-nav {
  background: #fff;
  border-top: 1px solid var(--border);
}
.nav-list {
  display: flex;
  align-items: center;
  height: 54px;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-list::-webkit-scrollbar {
  display: none;
}
.nav-link {
  padding: 10px 22px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-weak);
  white-space: nowrap;
  transition: var(--transition);
}
.nav-link:hover {
  color: var(--primary);
  background: rgba(108, 92, 231, .08);
}
.nav-link.active {
  color: var(--primary);
  background: rgba(108, 92, 231, .12);
}

/* ===== 版面通用 ===== */
.page-banner {
  position: relative;
  padding: 100px 0 70px;
  background: linear-gradient(135deg, var(--bg-deep) 0%, #2a2d4a 50%, #3d3057 100%);
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(108, 92, 231, .35), transparent 65%);
  border-radius: 50%;
}
.page-banner::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(253, 121, 168, .22), transparent 60%);
  border-radius: 50%;
}
.page-banner .container {
  position: relative;
  z-index: 2;
}
.page-banner .banner-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .12);
  backdrop-filter: blur(8px);
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 13px;
  color: rgba(255, 255, 255, .8);
  margin-bottom: 24px;
}
.page-banner .banner-breadcrumb a:hover {
  color: var(--accent);
}
.page-banner h1 {
  font-size: 42px;
  color: #fff;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.page-banner p.lead {
  font-size: 17px;
  color: rgba(255, 255, 255, .75);
  max-width: 640px;
  line-height: 1.8;
}
.banner-stats {
  display: flex;
  gap: 36px;
  margin-top: 32px;
}
.banner-stats .stat-item {
  text-align: center;
  background: rgba(255, 255, 255, .1);
  backdrop-filter: blur(10px);
  padding: 16px 26px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, .14);
}
.banner-stats .stat-num {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.banner-stats .stat-label {
  font-size: 13px;
  color: rgba(255, 255, 255, .7);
  margin-top: 4px;
}

/* ===== 板块 ===== */
.section {
  padding: 70px 0;
}
.section-alt {
  background: #fff;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 32px;
}
.section-head .title-wrap h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 6px;
}
.section-head .title-wrap h2 span {
  color: var(--primary);
}
.section-head .title-wrap p {
  color: var(--text-weak);
  font-size: 15px;
}
.section-link {
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.section-link:hover {
  color: var(--primary-dark);
  gap: 10px;
}

/* ===== 热门榜单 ===== */
.rank-wrap {
  display: grid;
  grid-template-columns: 1.65fr 1fr;
  gap: 32px;
}
.rank-list {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.rank-item {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
}
.rank-item:last-child {
  border-bottom: none;
}
.rank-item:hover {
  background: rgba(108, 92, 231, .04);
  padding-left: 30px;
}
.rank-num {
  font-size: 24px;
  font-weight: 800;
  color: #d7d8e3;
  width: 44px;
  text-align: center;
  flex-shrink: 0;
}
.rank-item:nth-child(-n+3) .rank-num {
  color: var(--primary);
}
.rank-item:first-child .rank-num {
  color: var(--accent);
  font-size: 28px;
}
.rank-content {
  flex: 1;
  min-width: 0;
}
.rank-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
}
.rank-title:hover {
  color: var(--primary);
}
.rank-meta {
  font-size: 13px;
  color: var(--text-weak);
  display: flex;
  gap: 14px;
  align-items: center;
  flex-wrap: wrap;
}
.rank-tag {
  background: rgba(108, 92, 231, .1);
  color: var(--primary);
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 20px;
  font-weight: 600;
}
.rank-tag.hot {
  background: var(--accent-light);
  color: #d63031;
}
.rank-heat {
  font-size: 13px;
  color: var(--text-weak);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.rank-heat i {
  color: var(--accent);
  font-size: 15px;
}
.rank-thumb {
  width: 92px;
  height: 68px;
  border-radius: 10px;
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, .1);
}

/* 侧栏卡片 */
.side-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 25px;
  margin-bottom: 24px;
}
.side-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
  position: relative;
}
.side-card h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 36px;
  height: 3px;
  background: var(--primary);
  border-radius: 4px;
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-item {
  background: #f1f2fa;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  color: var(--text);
  font-weight: 500;
  transition: var(--transition);
  cursor: pointer;
}
.tag-item:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}
.tag-item.hot {
  background: var(--accent-light);
  color: #d63031;
  font-weight: 600;
}
.mini-list li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 14px;
  display: flex;
  gap: 10px;
  align-items: center;
  cursor: pointer;
  transition: var(--transition);
}
.mini-list li:last-child {
  border-bottom: none;
}
.mini-list li:hover {
  color: var(--primary);
  padding-left: 6px;
}
.mini-list .dot {
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
  flex-shrink: 0;
}
.mini-list .time {
  margin-left: auto;
  color: var(--text-weak);
  font-size: 12px;
  flex-shrink: 0;
}

/* ===== 资讯卡片网格 ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.news-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}
.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.news-card-thumb {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: var(--bg-deep);
}
.news-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.news-card:hover .news-card-thumb img {
  transform: scale(1.06);
}
.news-card-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(20, 22, 42, .28), transparent 50%);
}
.news-card-badge {
  position: absolute;
  left: 14px;
  top: 14px;
  z-index: 2;
  background: rgba(255, 255, 255, .92);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  backdrop-filter: blur(6px);
}
.news-card-badge.badge-accent {
  background: var(--accent);
  color: #fff;
}
.news-card-body {
  padding: 20px;
}
.news-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}
.news-card-body h3:hover {
  color: var(--primary);
}
.news-card-body 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;
  margin-bottom: 14px;
}
.news-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-weak);
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.news-card-meta .author {
  display: flex;
  align-items: center;
  gap: 6px;
}
.news-card-meta .author i {
  color: var(--primary);
}
.news-card-meta .views i {
  margin-right: 4px;
  color: var(--accent);
}

/* ===== 数据版块 ===== */
.stats-block {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, var(--accent) 120%);
  border-radius: 24px;
  padding: 50px 40px;
  color: #fff;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  position: relative;
  overflow: hidden;
}
.stats-block::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(255, 255, 255, .14), transparent 70%);
}
.stat-card {
  text-align: center;
  position: relative;
  z-index: 2;
}
.stat-card .icon {
  font-size: 32px;
  margin-bottom: 10px;
  color: rgba(255, 255, 255, .75);
}
.stat-card .num {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.2;
}
.stat-card .label {
  font-size: 14px;
  opacity: .75;
  margin-top: 6px;
}

/* ===== 视频/内容区 ===== */
.feature-split {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: center;
}
.feature-media {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-hover);
}
.feature-media img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}
.feature-media .play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 72px;
  height: 72px;
  background: rgba(255, 255, 255, .24);
  backdrop-filter: blur(12px);
  border: 2px solid rgba(255, 255, 255, .5);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 24px;
  transition: var(--transition);
  cursor: pointer;
}
.feature-media .play-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  transform: translate(-50%, -50%) scale(1.1);
}
.feature-content h2 {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 16px;
}
.feature-content h2 span {
  color: var(--primary);
}
.feature-content p {
  color: var(--text-weak);
  font-size: 16px;
  line-height: 1.9;
  margin-bottom: 20px;
}
.feature-list {
  margin: 20px 0 28px;
}
.feature-list li {
  padding: 8px 0;
  font-size: 15px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}
.feature-list li i {
  color: var(--primary);
  font-size: 14px;
}

/* ===== 排行榜 ===== */
.rank-panel {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.rank-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: linear-gradient(135deg, var(--bg-deep), #2d2f4d);
  color: #fff;
}
.rank-panel-head h3 {
  font-size: 18px;
  font-weight: 700;
}
.rank-panel-head .bar {
  display: flex;
  gap: 6px;
}
.rank-panel-head .bar span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 1.5s infinite;
}
.rank-panel-head .bar span:nth-child(2) {
  background: var(--primary-light);
  animation-delay: .2s;
}
.rank-panel-head .bar span:nth-child(3) {
  background: #fff;
  animation-delay: .4s;
}
@keyframes pulse {
  0%, 100% { opacity: .4; }
  50% { opacity: 1; }
}
.rank-panel-list {
  padding: 10px 24px;
}
.rank-panel-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.rank-panel-list li:last-child {
  border-bottom: none;
}
.rank-panel-list .badge {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: #f1f2fa;
  color: var(--text-weak);
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.rank-panel-list li:nth-child(1) .badge {
  background: linear-gradient(135deg, #f6d365, #fda085);
  color: #fff;
}
.rank-panel-list li:nth-child(2) .badge {
  background: linear-gradient(135deg, #a8b8d8, #8b9dc3);
  color: #fff;
}
.rank-panel-list li:nth-child(3) .badge {
  background: linear-gradient(135deg, #e6a67a, #c47a4d);
  color: #fff;
}
.rank-panel-list .info {
  flex: 1;
  min-width: 0;
}
.rank-panel-list .info h4 {
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.rank-panel-list .info span {
  font-size: 12px;
  color: var(--text-weak);
}
.rank-panel-list .score {
  font-weight: 700;
  color: var(--primary);
  font-size: 15px;
  flex-shrink: 0;
}

/* ===== 热门话题 ===== */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.topic-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.topic-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}
.topic-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.topic-card:hover::before {
  opacity: 1;
}
.topic-card .icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(108, 92, 231, .12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--primary);
  margin-bottom: 16px;
}
.topic-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}
.topic-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  margin-bottom: 14px;
}
.topic-card .topic-meta {
  font-size: 13px;
  color: var(--text-weak);
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}
.topic-card .topic-meta b {
  color: var(--primary);
}

/* ===== CTA ===== */
.cta-block {
  background: linear-gradient(135deg, var(--bg-deep) 0%, #2a2350 100%);
  border-radius: 24px;
  padding: 56px 40px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-block::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(108, 92, 231, .5), transparent 70%);
}
.cta-block::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -60px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(253, 121, 168, .3), transparent 70%);
}
.cta-block h2 {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 14px;
  position: relative;
  z-index: 2;
}
.cta-block p {
  font-size: 16px;
  color: rgba(255, 255, 255, .7);
  max-width: 540px;
  margin: 0 auto 30px;
  position: relative;
  z-index: 2;
}
.cta-block .btn-wrap {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 780px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-card);
  border-radius: 14px;
  border: 1px solid var(--border);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: var(--primary);
}
.faq-item summary {
  padding: 18px 22px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 13px;
  color: var(--text-weak);
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  transform: rotate(180deg);
  color: var(--primary);
}
.faq-item[open] {
  box-shadow: var(--shadow);
}
.faq-item .faq-content {
  padding: 0 22px 20px;
  font-size: 15px;
  color: var(--text-weak);
  line-height: 1.8;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255, 255, 255, .7);
  padding: 60px 0 0;
  margin-top: 30px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-top: 16px;
  max-width: 340px;
}
.footer-brand .brand-icon {
  background: linear-gradient(135deg, var(--primary), var(--accent));
}
.footer-brand .brand-name {
  color: #fff;
}
.footer-col h4 {
  color: #fff;
  font-size: 17px;
  margin-bottom: 18px;
}
.footer-col ul li {
  padding: 6px 0;
}
.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, .65);
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-col ul li a i {
  font-size: 12px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  flex-wrap: wrap;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .rank-wrap {
    grid-template-columns: 1fr;
  }
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .topic-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-block {
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-split {
    grid-template-columns: 1fr;
  }
  .feature-media img {
    height: 320px;
  }
}
@media (max-width: 768px) {
  .header-top {
    height: 64px;
  }
  .header-search {
    display: none;
  }
  .search-toggle {
    display: flex;
  }
  .header-search.mobile-open {
    display: flex;
    position: absolute;
    top: 64px;
    left: 12px;
    right: 12px;
    z-index: 100;
    background: #fff;
    box-shadow: var(--shadow);
    border-radius: 12px;
    padding: 6px;
  }
  .nav-list {
    height: 50px;
    padding: 0 12px;
  }
  .nav-link {
    padding: 8px 16px;
    font-size: 14px;
  }
  .page-banner {
    padding: 70px 0 50px;
  }
  .page-banner h1 {
    font-size: 30px;
  }
  .banner-stats {
    gap: 12px;
    flex-wrap: wrap;
  }
  .banner-stats .stat-item {
    padding: 12px 18px;
  }
  .banner-stats .stat-num {
    font-size: 22px;
  }
  .section {
    padding: 50px 0;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .brand-name {
    font-size: 17px;
  }
  .brand-badge {
    font-size: 11px;
    padding: 3px 8px;
  }
  .nav-link {
    padding: 6px 12px;
    font-size: 13px;
  }
  .page-banner h1 {
    font-size: 26px;
  }
  .page-banner p.lead {
    font-size: 15px;
  }
  .banner-stats .stat-item {
    flex: 1;
    min-width: 90px;
    padding: 10px 12px;
  }
  .rank-item {
    padding: 14px 14px;
    gap: 12px;
  }
  .rank-thumb {
    width: 64px;
    height: 52px;
  }
  .rank-title {
    font-size: 14px;
  }
  .rank-heat {
    display: none;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .topic-grid {
    grid-template-columns: 1fr;
  }
  .stats-block {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 30px 20px;
  }
  .stat-card .num {
    font-size: 28px;
  }
  .feature-media img {
    height: 220px;
  }
  .cta-block {
    padding: 40px 20px;
  }
  .cta-block h2 {
    font-size: 22px;
  }
  .rank-panel-head {
    padding: 16px;
  }
  .rank-panel-list {
    padding: 8px 16px;
  }
}

/* roulang page: category3 */
:root {
  --primary: #6b5bff;
  --primary-dark: #5746e0;
  --primary-light: #eceaff;
  --accent: #ff9f1c;
  --accent-2: #ff4d6d;
  --success: #22c55e;
  --bg: #f6f7fc;
  --surface: #ffffff;
  --dark: #151927;
  --dark-2: #221a3f;
  --text: #20243a;
  --text-muted: #71768f;
  --border: #e6e8f3;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(26, 28, 54, .06);
  --shadow: 0 10px 30px rgba(26, 28, 54, .10);
  --shadow-lg: 0 20px 50px rgba(26, 28, 54, .16);
  --transition: .25s ease;
  --container: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

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

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

a {
  color: inherit;
  text-decoration: none;
}

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

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  transition: all var(--transition);
  white-space: nowrap;
}

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

.btn-lg {
  padding: 15px 36px;
  font-size: 16px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #9b5cff);
  color: #fff;
  box-shadow: 0 8px 24px rgba(107, 91, 255, .32);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(107, 91, 255, .4);
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

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

.btn-secondary {
  background: var(--surface);
  color: var(--primary);
  border: 1px solid rgba(107, 91, 255, .2);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  border-color: var(--primary);
  background: var(--primary-light);
  transform: translateY(-2px);
}

.btn-light {
  background: rgba(255, 255, 255, .14);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .35);
  backdrop-filter: blur(6px);
}

.btn-light:hover {
  background: rgba(255, 255, 255, .26);
  transform: translateY(-2px);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent), #ffb547);
  color: #241a00;
  box-shadow: 0 8px 24px rgba(255, 159, 28, .35);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(255, 159, 28, .45);
}

.btn:focus-visible,
a:focus-visible,
input:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(107, 91, 255, .35);
  outline-offset: 2px;
}

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 24px rgba(26, 28, 54, .05);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 24px;
  max-width: var(--container);
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-icon {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), #9b5cff);
  color: #fff;
  font-size: 19px;
  border-radius: 13px;
  box-shadow: 0 6px 18px rgba(107, 91, 255, .35);
  transition: transform var(--transition);
}

.brand:hover .brand-icon {
  transform: rotate(-8deg) scale(1.04);
}

.brand-name {
  font-size: 21px;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: .4px;
  line-height: 1.1;
}

.brand-badge {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  background: rgba(255, 159, 28, .12);
  border: 1px solid rgba(255, 159, 28, .28);
  padding: 3px 10px;
  border-radius: 999px;
  letter-spacing: .3px;
}

.header-search {
  flex: 1;
  max-width: 430px;
  display: flex;
  align-items: center;
  background: #f0f1fa;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 5px 5px 5px 18px;
  transition: all var(--transition);
}

.header-search:focus-within {
  border-color: rgba(107, 91, 255, .3);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.header-search input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 14px;
  color: var(--text);
  min-width: 0;
}

.header-search input::placeholder {
  color: #9fa3bc;
}

.header-search button {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #9b5cff);
  color: #fff;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.header-search button:hover {
  transform: scale(1.06);
}

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

.search-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-size: 15px;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.search-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.header-nav {
  border-top: 1px solid var(--border);
  background: #fff;
}

.nav-list {
  display: flex;
  gap: 6px;
  list-style: none;
  max-width: var(--container);
  margin: 0 auto;
  padding: 8px 24px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.nav-list::-webkit-scrollbar {
  display: none;
}

.nav-list li {
  flex-shrink: 0;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  transition: all var(--transition);
  white-space: nowrap;
}

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

.nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
  box-shadow: inset 0 0 0 1px rgba(107, 91, 255, .18);
}

/* ===== 页面首屏 ===== */
.page-hero {
  position: relative;
  padding: 76px 0 70px;
  background: linear-gradient(135deg, #151927 0%, #251b49 58%, #3a2360 100%);
  overflow: hidden;
  color: #fff;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: .14;
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 82% 18%, rgba(255, 159, 28, .18) 0%, transparent 42%),
    radial-gradient(circle at 12% 82%, rgba(107, 91, 255, .22) 0%, transparent 50%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, .68);
  margin-bottom: 22px;
  flex-wrap: wrap;
}

.hero-breadcrumb a {
  color: rgba(255, 255, 255, .8);
  transition: color var(--transition);
}

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

.hero-breadcrumb i {
  font-size: 11px;
  color: rgba(255, 255, 255, .4);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 159, 28, .16);
  border: 1px solid rgba(255, 159, 28, .35);
  color: #ffc56a;
  font-size: 13px;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.page-hero h1 {
  font-size: 42px;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: .5px;
  margin-bottom: 16px;
}

.page-hero h1 span {
  background: linear-gradient(120deg, #ffb547, #ff7e9d);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  max-width: 640px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .76);
  margin-bottom: 30px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 34px;
}

.stat-item {
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 14px;
  padding: 14px 24px;
  text-align: center;
  backdrop-filter: blur(8px);
  min-width: 128px;
  transition: all var(--transition);
}

.stat-item:hover {
  background: rgba(255, 255, 255, .14);
  transform: translateY(-3px);
}

.stat-item strong {
  display: block;
  font-size: 26px;
  font-weight: 900;
  color: #fff;
  line-height: 1.3;
}

.stat-item span {
  font-size: 12px;
  color: rgba(255, 255, 255, .62);
}

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

/* ===== 通用板块 ===== */
.section {
  padding: 80px 0;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.section-head h2 {
  font-size: 30px;
  font-weight: 900;
  color: var(--dark);
  line-height: 1.3;
  letter-spacing: .3px;
  margin-bottom: 12px;
}

.section-head p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ===== 福利总览 ===== */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.overview-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.overview-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), #9b5cff);
  opacity: 0;
  transition: opacity var(--transition);
}

.overview-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: rgba(107, 91, 255, .18);
}

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

.overview-card.hot::before {
  background: linear-gradient(90deg, var(--accent), #ff7e9d);
  opacity: .9;
}

.overview-icon {
  width: 58px;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: 16px;
  margin-bottom: 20px;
}

.overview-card.hot .overview-icon {
  background: rgba(255, 159, 28, .12);
  color: var(--accent);
}

.overview-card h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 10px;
}

.overview-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 16px;
}

.overview-card a {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.overview-card a:hover {
  gap: 10px;
}

/* ===== 活动卡片 ===== */
.event-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.event-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.event-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(107, 91, 255, .15);
}

.event-cover {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.event-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

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

.event-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 38%, rgba(13, 15, 28, .68) 100%);
}

.event-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .18);
  border: 1px solid rgba(255, 255, 255, .3);
  color: #fff;
  backdrop-filter: blur(6px);
}

.event-tag.limited {
  background: rgba(255, 77, 109, .88);
  border-color: transparent;
}

.event-tag.gold {
  background: rgba(255, 159, 28, .88);
  border-color: transparent;
  color: #241a00;
}

.event-time {
  position: absolute;
  bottom: 14px;
  right: 14px;
  z-index: 2;
  font-size: 12px;
  color: rgba(255, 255, 255, .88);
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(13, 15, 28, .5);
  padding: 4px 12px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

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

.event-body h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
  line-height: 1.4;
}

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

.event-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.event-meta .hot {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--accent-2);
  font-weight: 700;
}

.event-meta .members {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.event-body .btn {
  width: 100%;
}

/* ===== 排行 ===== */
.rank-section {
  background: linear-gradient(180deg, var(--surface) 0%, #f3f2fc 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

.rank-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.rank-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: rgba(107, 91, 255, .18);
}

.rank-no {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 900;
  border-radius: 12px;
  background: #f0f1fa;
  color: var(--text-muted);
}

.rank-item:nth-child(1) .rank-no {
  background: linear-gradient(135deg, var(--accent), #ffb547);
  color: #241a00;
  box-shadow: 0 6px 16px rgba(255, 159, 28, .35);
}

.rank-item:nth-child(2) .rank-no {
  background: linear-gradient(135deg, #c0c6d6, #9aa3b8);
  color: #fff;
}

.rank-item:nth-child(3) .rank-no {
  background: linear-gradient(135deg, #e0a577, #c8773f);
  color: #fff;
}

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

.rank-info h4 {
  font-size: 16px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}

.rank-bar {
  height: 8px;
  background: #eef0f8;
  border-radius: 999px;
  overflow: hidden;
}

.rank-bar span {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary), #9b5cff);
}

.rank-item:nth-child(1) .rank-bar span {
  background: linear-gradient(90deg, var(--accent), #ff7e9d);
}

.rank-num {
  flex-shrink: 0;
  text-align: right;
}

.rank-num strong {
  display: block;
  font-size: 26px;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.2;
}

.rank-num span {
  font-size: 12px;
  color: var(--text-muted);
}

.rank-state {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--success);
  background: rgba(34, 197, 94, .1);
  padding: 6px 14px;
  border-radius: 999px;
}

/* ===== 流程 ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
  counter-reset: steps;
}

.step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 26px 28px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
}

.step-card::before {
  counter-increment: steps;
  content: counter(steps, decimal-leading-zero);
  position: absolute;
  top: 18px;
  right: 20px;
  font-size: 28px;
  font-weight: 900;
  color: rgba(107, 91, 255, .12);
  line-height: 1;
}

.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: rgba(107, 91, 255, .16);
}

.step-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #9b5cff);
  border-radius: 20px;
  box-shadow: 0 10px 24px rgba(107, 91, 255, .3);
}

.step-card h3 {
  font-size: 16px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}

.step-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition);
}

.faq-item:hover {
  border-color: rgba(107, 91, 255, .16);
}

.faq-item.open {
  border-color: rgba(107, 91, 255, .28);
  box-shadow: var(--shadow);
}

.faq-question {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  text-align: left;
  padding: 20px 24px;
  background: transparent;
  font-size: 16px;
  font-weight: 700;
  color: var(--dark);
  transition: color var(--transition);
}

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

.faq-question .faq-icon {
  margin-left: auto;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  transition: all var(--transition);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
  padding: 0 24px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 22px;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 86px 0;
  background: linear-gradient(135deg, #151927, #2a1e55);
  overflow: hidden;
  color: #fff;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: .16;
}

.cta-section::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 18% 90%, rgba(107, 91, 255, .35), transparent 45%),
    radial-gradient(circle at 80% 10%, rgba(255, 159, 28, .25), transparent 40%);
}

.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

.cta-inner h2 {
  font-size: 34px;
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 16px;
}

.cta-inner p {
  font-size: 16px;
  color: rgba(255, 255, 255, .78);
  line-height: 1.8;
  margin-bottom: 32px;
}

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

/* ===== 页脚 ===== */
.site-footer {
  background: #12141f;
  color: rgba(255, 255, 255, .72);
  padding: 64px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.footer-brand .brand {
  margin-bottom: 18px;
}

.footer-brand .brand-name {
  color: #fff;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .58);
  max-width: 380px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, .6);
  transition: all var(--transition);
}

.footer-col a i {
  font-size: 12px;
  color: rgba(255, 255, 255, .35);
  transition: transform var(--transition);
}

.footer-col a:hover {
  color: var(--accent);
  transform: translateX(3px);
}

.footer-col a:hover i {
  transform: translateX(3px);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 24px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, .42);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .section {
    padding: 64px 0;
  }

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

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

  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .header-top {
    padding: 12px 20px;
    gap: 14px;
  }

  .header-search {
    display: none;
  }

  .search-toggle {
    display: flex;
  }

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

  .brand-badge {
    display: none;
  }

  .nav-list {
    padding: 8px 20px 10px;
  }

  .nav-link {
    padding: 8px 16px;
    font-size: 13px;
  }

  .page-hero {
    padding: 58px 0 54px;
  }

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

  .hero-desc {
    font-size: 15px;
  }

  .stat-item {
    min-width: 108px;
    padding: 12px 18px;
  }

  .stat-item strong {
    font-size: 22px;
  }

  .section {
    padding: 56px 0;
  }

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

  .event-grid,
  .overview-grid {
    gap: 18px;
  }

  .rank-item {
    flex-wrap: wrap;
    gap: 14px;
  }

  .rank-state {
    display: none;
  }

  .rank-num {
    flex-basis: 70px;
  }

  .cta-inner h2 {
    font-size: 28px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    padding: 20px 0;
  }
}

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

  .hero-inner {
    padding: 0 16px;
  }

  .brand-icon {
    width: 36px;
    height: 36px;
    font-size: 16px;
    border-radius: 10px;
  }

  .brand-name {
    font-size: 16px;
  }

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

  .btn-lg {
    padding: 13px 26px;
    font-size: 15px;
  }

  .page-hero {
    padding: 46px 0 44px;
  }

  .page-hero h1 {
    font-size: 27px;
  }

  .hero-stats {
    gap: 10px;
  }

  .stat-item {
    flex: 1;
    min-width: 90px;
    padding: 10px 12px;
  }

  .stat-item strong {
    font-size: 19px;
  }

  .stat-item span {
    font-size: 11px;
  }

  .event-grid,
  .overview-grid,
  .steps-grid {
    grid-template-columns: 1fr;
  }

  .event-body {
    padding: 20px;
  }

  .section-head {
    margin-bottom: 36px;
  }

  .section-head h2 {
    font-size: 23px;
  }

  .rank-item {
    padding: 16px;
  }

  .rank-no {
    width: 38px;
    height: 38px;
    font-size: 16px;
  }

  .rank-num strong {
    font-size: 22px;
  }

  .step-card {
    padding: 28px 20px 24px;
  }

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

  .faq-answer {
    padding: 0 18px;
  }

  .faq-item.open .faq-answer {
    padding: 0 18px 18px;
  }

  .cta-section {
    padding: 60px 0;
  }

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

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }

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