/* roulang page: index */
:root {
  --bg: #0D0B14;
  --surface: #17131F;
  --surface-2: #1F1A2A;
  --primary: #00E5A0;
  --primary-hover: #2DF0B4;
  --accent: #FF7A1A;
  --text: #F2F0EB;
  --text-dim: #9B95A7;
  --border: rgba(255,255,255,0.08);
  --glow: rgba(0,229,160,0.35);
  --radius-card: 16px;
  --radius-pill: 999px;
  --radius-small: 8px;
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-hover: 0 8px 40px rgba(0,0,0,0.5), 0 0 0 1px var(--border);
  --container: 1200px;
  --space: 96px;
  --font-main: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color .25s ease; }
img { max-width: 100%; display: block; height: auto; }
button { font-family: inherit; border: none; background: none; cursor: pointer; color: inherit; }
input, textarea { font-family: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section-pad { padding: var(--space) 0; }
.text-dim { color: var(--text-dim); }

.section-head { text-align: center; margin-bottom: 56px; }
.section-head h2 {
  font-size: 26px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: .5px;
}
.section-head h2::after {
  content: '';
  display: block;
  width: 48px;
  height: 4px;
  background: var(--primary);
  transform: skewX(-20deg);
  margin: 12px auto 0;
  box-shadow: 0 0 12px var(--glow);
}
.section-head p {
  color: var(--text-dim);
  margin-top: 14px;
  font-size: 15px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
  transition: all .25s ease;
  white-space: nowrap;
  position: relative;
}
.btn i { transition: transform .25s ease; }
.btn-primary {
  background: var(--primary);
  color: #0A0A0A;
  box-shadow: 0 0 20px var(--glow), 0 4px 14px rgba(0,0,0,0.2);
}
.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 0 32px rgba(0,229,160,0.55), 0 6px 20px rgba(0,0,0,0.25);
  transform: translateY(-2px);
}
.btn-primary:hover i { transform: translateX(4px); }
.btn-primary:active { transform: translateY(0) scale(0.98); }
.btn-primary:focus-visible {
  outline: 3px solid var(--glow);
  outline-offset: 2px;
}
.btn-outline {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: rgba(0,229,160,0.08);
  border-color: var(--primary-hover);
  color: var(--primary-hover);
  transform: translateY(-2px);
}
.btn-outline:active { transform: scale(0.98); }
.btn-outline:focus-visible {
  outline: 3px solid var(--glow);
  outline-offset: 2px;
}
.btn-sm { padding: 8px 20px; font-size: 14px; }

/* ===== Navigation ===== */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  max-width: calc(100% - 32px);
  background: rgba(13,11,20,0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 8px 16px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.35);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0;
}
.brand {
  font-size: 18px;
  font-weight: 800;
  display: flex;
  align-items: baseline;
  gap: 4px;
  padding: 6px 0;
  color: var(--text);
}
.brand strong { color: var(--primary); font-weight: 800; }
.brand span { color: var(--accent); font-weight: 700; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.nav-links a {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 500;
  color: var(--text-dim);
  position: relative;
  transition: color .25s ease, background .25s ease;
}
.nav-links a:hover { color: var(--primary-hover); background: rgba(0,229,160,0.06); }
.nav-links a.active { color: var(--primary); font-weight: 600; }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px var(--glow);
}
.btn-nav { margin-left: 8px; }
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 18px;
  align-items: center;
  justify-content: center;
  transition: all .25s ease;
}
.nav-toggle:hover { border-color: var(--primary); color: var(--primary); }
.nav-toggle:focus-visible { outline: 2px solid var(--glow); }

/* ===== Hero ===== */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  padding: 140px 0 100px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(13,11,20,0.96) 0%, rgba(13,11,20,0.82) 45%, rgba(13,11,20,0.55) 75%, rgba(13,11,20,0.3) 100%);
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -40px;
  right: -20px;
  width: 300px;
  height: 200px;
  background: radial-gradient(circle, rgba(0,229,160,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 48px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: rgba(0,229,160,0.1);
  border: 1px solid rgba(0,229,160,0.3);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero-badge i { font-size: 14px; }
.hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: 1px;
}
.hero h1 .highlight {
  color: var(--primary);
  position: relative;
  display: inline-block;
  margin-top: 4px;
}
.hero h1 .highlight::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 8px;
  background: var(--glow);
  clip-path: polygon(0 40%, 100% 0, 100% 100%, 0 70%);
  opacity: 0.4;
}
.hero-sub {
  font-size: 17px;
  color: var(--text-dim);
  margin-top: 20px;
  max-width: 420px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; margin-top: 32px; flex-wrap: wrap; }
.hero-trust {
  display: flex;
  gap: 20px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.hero-trust span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-dim);
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: rgba(13,11,20,0.5);
}
.hero-trust i { color: var(--primary); font-size: 13px; }
.hero-visual {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
  transform: rotate(1deg);
}
.hero-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, transparent 65%, rgba(0,229,160,0.1) 100%);
  z-index: 1;
  pointer-events: none;
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; }
.hero-visual::after {
  content: '';
  position: absolute;
  top: -20px;
  right: -20px;
  width: 80px;
  height: 80px;
  border: 2px solid var(--primary);
  border-radius: 12px;
  opacity: 0.35;
  transform: rotate(20deg);
  z-index: 0;
}

/* ===== Advantage ===== */
.advantages { padding: var(--space) 0 60px; }
.advantage-grid {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.advantage-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 36px 40px;
  position: relative;
  overflow: hidden;
  transition: all .3s ease;
  box-shadow: var(--shadow-card);
  max-width: 72%;
}
.advantage-card:nth-child(2) { margin-left: 15%; }
.advantage-card:nth-child(3) { margin-left: 3%; }
.advantage-card::before {
  content: attr(data-num);
  position: absolute;
  top: -10px;
  right: 20px;
  font-size: 80px;
  font-weight: 800;
  color: rgba(0,229,160,0.1);
  line-height: 1;
  font-family: 'Segoe UI', system-ui, sans-serif;
}
.advantage-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover), 0 0 24px rgba(0,229,160,0.08);
}
.adv-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-small);
  background: rgba(0,229,160,0.12);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 20px;
}
.advantage-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.advantage-card p { color: var(--text-dim); font-size: 14px; line-height: 1.7; max-width: 340px; }
.adv-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  margin-top: 18px;
  transition: gap .25s ease;
}
.adv-link:hover { gap: 12px; color: var(--primary-hover); }
.adv-link i { font-size: 12px; }

/* ===== Showcase ===== */
.showcase { padding: 40px 0 80px; }
.showcase-panel {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  aspect-ratio: 16/7;
  margin-bottom: 36px;
}
.showcase-panel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.showcase-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(13,11,20,0.4) 0%, transparent 60%);
}
.float-card {
  position: absolute;
  background: rgba(13,11,20,0.85);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  border-radius: 12px;
  padding: 18px 24px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  backdrop-filter: blur(8px);
  max-width: 260px;
}
.float-event { bottom: 20px; left: 24px; }
.float-stats { top: 20px; right: 24px; text-align: right; }
.float-tag {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  display: block;
  margin-bottom: 6px;
}
.float-card h3 { font-size: 20px; font-weight: 700; }
.float-card p { font-size: 13px; color: var(--text-dim); margin-top: 4px; }
.float-card em { color: var(--accent); font-style: normal; font-weight: 700; }
.feature-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
}
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 24px 32px;
}
.feature-row + .feature-row {
  border-top: 1px solid var(--border);
}
.feature-row div {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text);
}
.feature-row i {
  color: var(--primary);
  font-size: 16px;
  width: 20px;
  text-align: center;
}

/* ===== Social Proof ===== */
.social-proof { padding: 60px 0 var(--space); }
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 56px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 36px 24px;
  box-shadow: var(--shadow-card);
}
.stat-item {
  text-align: center;
  padding: 12px;
}
.stat-item strong {
  font-size: 40px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}
.stat-item small {
  font-size: 18px;
  color: var(--accent);
  font-weight: 700;
}
.stat-item span {
  display: block;
  color: var(--text-dim);
  font-size: 14px;
  margin-top: 6px;
}
.quotes-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
}
.quotes-grid blockquote {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px 32px;
  position: relative;
  max-width: 65%;
  box-shadow: var(--shadow-card);
}
.quotes-grid blockquote:nth-child(2) {
  margin-left: 22%;
  max-width: 60%;
  border-left: 3px solid var(--accent);
}
.quotes-grid blockquote > i {
  color: var(--primary);
  font-size: 28px;
  opacity: 0.35;
  margin-bottom: 12px;
  display: block;
}
.quotes-grid blockquote p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}
.quotes-grid footer {
  color: var(--text-dim);
  font-size: 13px;
  margin-top: 12px;
  font-weight: 600;
}

/* ===== News List ===== */
.news { padding: 40px 0 var(--space); }
.news-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.news-card {
  display: flex;
  gap: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 20px 24px;
  transition: all .3s ease;
  position: relative;
}
.news-card:hover {
  background: var(--surface-2);
  border-color: rgba(0,229,160,0.4);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}
.news-thumb {
  flex-shrink: 0;
  width: 180px;
  height: 110px;
  border-radius: var(--radius-small);
  overflow: hidden;
  background: var(--surface-2);
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.news-card:hover .news-thumb img { transform: scale(1.05); }
.news-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.news-tag {
  align-self: flex-start;
  display: inline-flex;
  padding: 2px 10px;
  border-radius: 4px;
  background: rgba(0,229,160,0.1);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 8px;
  white-space: nowrap;
}
.news-body h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
}
.news-body h3 a { color: var(--text); transition: color .2s; }
.news-body h3 a:hover { color: var(--primary); }
.news-body > p {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.6;
  margin-top: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 10px;
  font-size: 13px;
  color: var(--text-dim);
}
.news-more {
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .2s ease;
}
.news-more:hover { gap: 10px; }
.news-more i { font-size: 12px; }
.empty-tip {
  text-align: center;
  padding: 48px 24px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-card);
  color: var(--text-dim);
  font-size: 15px;
  background: var(--surface);
}

/* ===== FAQ ===== */
.faq { padding: 40px 0 var(--space); }
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  transition: border-color .25s ease;
}
.faq-item:hover { border-color: rgba(0,229,160,0.4); }
.faq-item.active { border-color: rgba(0,229,160,0.5); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  padding: 4px 0;
  text-align: left;
}
.faq-q::after {
  content: '+';
  font-size: 24px;
  color: var(--primary);
  font-weight: 400;
  transition: transform .3s ease;
  flex-shrink: 0;
  line-height: 1;
}
.faq-item.active .faq-q::after { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .3s ease;
  padding: 0;
}
.faq-item.active .faq-a {
  max-height: 220px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  margin-top: 12px;
}
.faq-a p {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.75;
}

/* ===== CTA ===== */
.cta { padding: 40px 0 var(--space); }
.cta-panel {
  position: relative;
  background: linear-gradient(120deg, rgba(0,229,160,0.08) 0%, var(--surface) 60%);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 64px 48px;
  text-align: center;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.cta-panel::before {
  content: '';
  position: absolute;
  top: -80px;
  left: -80px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,122,26,0.2) 0%, transparent 70%);
}
.cta-panel::after {
  content: '';
  position: absolute;
  bottom: -60px;
  right: -60px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,229,160,0.18) 0%, transparent 70%);
}
.cta-panel h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--text);
  position: relative;
  z-index: 1;
}
.cta-panel p {
  color: var(--text-dim);
  font-size: 16px;
  margin: 16px 0 28px;
  position: relative;
  z-index: 1;
}
.cta-panel .btn { position: relative; z-index: 1; }

/* ===== Footer ===== */
.site-footer {
  background: #08060F;
  border-top: 1px solid var(--border);
  padding-top: 64px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 48px;
  padding-bottom: 40px;
}
.footer-logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 6px;
}
.footer-logo strong { color: var(--primary); }
.footer-brand p {
  color: var(--text-dim);
  font-size: 14px;
  margin-top: 10px;
  max-width: 240px;
  line-height: 1.7;
}
.copyright { color: #6b6478 !important; font-size: 13px !important; margin-top: 18px !important; }
.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.link-group h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
}
.link-group a {
  display: block;
  color: var(--text-dim);
  font-size: 14px;
  padding: 5px 0;
  transition: color .2s;
}
.link-group a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-bottom span { color: #6b6478; font-size: 13px; }
.social-icons { display: flex; gap: 10px; }
.social-icons a {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: 15px;
  transition: all .25s ease;
}
.social-icons a:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 12px var(--glow);
}

/* ===== Float Bar ===== */
.float-bar {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 900;
  background: rgba(13,11,20,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 10px 14px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  max-width: calc(100% - 32px);
}
.float-bar-inner {
  display: flex;
  align-items: center;
  gap: 18px;
}
.float-bar-inner p {
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}
.float-badge {
  background: rgba(0,229,160,0.15);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: var(--radius-pill);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding-top: 120px; }
  .hero-visual { max-width: 520px; }
  .advantage-card { max-width: 85%; }
  .advantage-card:nth-child(2) { margin-left: 8%; }
  .advantage-card:nth-child(3) { margin-left: 0%; }
  .quotes-grid blockquote { max-width: 80%; }
  .quotes-grid blockquote:nth-child(2) { margin-left: 10%; max-width: 75%; }
  .news-thumb { width: 150px; height: 100px; }
}
@media (max-width: 768px) {
  :root { --space: 64px; }
  .site-nav { top: 12px; padding: 8px 12px; }
  .nav-links {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    background: rgba(13,11,20,0.92);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 12px;
    flex-direction: column;
    gap: 4px;
    display: none;
    box-shadow: 0 16px 40px rgba(0,0,0,0.5);
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; text-align: center; padding: 12px; }
  .nav-links a.active::after { display: none; }
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .btn-nav { display: none; }
  .hero h1 { font-size: 34px; }
  .hero-sub { font-size: 16px; }
  .hero-actions .btn { padding: 12px 24px; font-size: 15px; }
  .advantage-card, .advantage-card:nth-child(2), .advantage-card:nth-child(3) { max-width: 100%; margin-left: 0; }
  .feature-list { grid-template-columns: 1fr; }
  .feature-row { grid-template-columns: 1fr 1fr; padding: 20px; gap: 14px; }
  .stats-row { grid-template-columns: 1fr; gap: 16px; padding: 28px 20px; }
  .stat-item strong { font-size: 36px; }
  .quotes-grid blockquote, .quotes-grid blockquote:nth-child(2) { max-width: 100%; margin-left: 0; }
  .news-card { flex-direction: column; padding: 16px; }
  .news-thumb { width: 100%; height: 160px; }
  .news-body h3 { font-size: 16px; }
  .cta-panel { padding: 48px 24px; }
  .cta-panel h2 { font-size: 26px; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-links { grid-template-columns: 1fr 1fr; }
  .float-bar {
    bottom: 0;
    left: 0;
    right: 0;
    transform: none;
    border-radius: 0;
    background: #0D0B14;
    padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
    max-width: 100%;
    border-left: none;
    border-right: none;
    border-bottom: none;
  }
  .float-bar-inner { justify-content: space-between; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 28px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .hero-trust { gap: 10px; }
  .hero-trust span { padding: 4px 10px; }
  .feature-row { grid-template-columns: 1fr; }
  .business-row { grid-template-columns: 1fr; }
  .float-card { max-width: 200px; padding: 14px 16px; }
  .float-card h3 { font-size: 16px; }
  .float-event { bottom: 10px; left: 10px; }
  .float-stats { top: 10px; right: 10px; }
  .section-head h2 { font-size: 22px; }
  .faq-q { font-size: 15px; }
  .footer-links { grid-template-columns: 1fr; }
  .cta-panel h2 { font-size: 22px; }
  .social-icons a { width: 32px; height: 32px; }
}

/* roulang page: category1 */
:root {
  --bg: #0D0B14;
  --surface: #17131F;
  --surface-2: #1F1A2A;
  --primary: #00E5A0;
  --primary-hover: #2DF0B4;
  --accent: #FF7A1A;
  --text: #F2F0EB;
  --text-dim: #9B95A7;
  --border: rgba(255,255,255,0.08);
  --glow: rgba(0,229,160,0.35);
  --radius-card: 16px;
  --radius-pill: 999px;
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-hover: 0 8px 40px rgba(0,0,0,0.5), 0 0 0 1px var(--border);
  --container: 1200px;
  --spacer: 96px;
  --font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
::selection { background: rgba(0,229,160,0.3); color: #fff; }
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 6px;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font);
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  transition: all .28s ease;
  letter-spacing: .01em;
  white-space: nowrap;
}
.btn i { transition: transform .28s ease; }
.btn:hover i { transform: translateX(4px); }
.btn-primary {
  background: var(--primary);
  color: #0D0B14;
  box-shadow: 0 0 20px var(--glow);
}
.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 0 32px var(--glow), 0 4px 16px rgba(0,229,160,0.25);
  transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(1px); }
.btn-outline {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}
.btn-outline:hover {
  background: rgba(0,229,160,0.1);
  box-shadow: 0 0 16px var(--glow);
}
.btn-outline:active { transform: translateY(1px); }
.btn-sm { padding: 10px 20px; font-size: 14px; }
.btn-lg { padding: 18px 36px; font-size: 16px; }
.btn-ghost {
  background: transparent;
  color: var(--primary);
  padding: 8px 4px;
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-ghost i { font-size: 14px; }
.btn-ghost:hover { color: var(--primary-hover); }
.btn-ghost:hover i { transform: translateX(4px); }
/* ===== 导航 ===== */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: calc(100% - 32px);
  max-width: 1060px;
  background: rgba(13,11,20,0.72);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 8px 12px 8px 20px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: inline-flex;
  align-items: baseline;
  font-size: 19px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: .02em;
}
.brand strong { color: var(--primary); font-weight: 800; }
.brand span { color: var(--primary); font-weight: 800; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-links a {
  position: relative;
  display: inline-block;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 500;
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.nav-links a.active { color: var(--primary); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 5px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--primary);
}
.btn-nav { box-shadow: 0 2px 12px var(--glow); }
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 18px;
  color: var(--text);
  background: rgba(255,255,255,0.06);
  align-items: center;
  justify-content: center;
  transition: background .2s, color .2s;
}
.nav-toggle:hover { background: rgba(0,229,160,0.15); color: var(--primary); }
/* ===== 分类 HERO ===== */
.cat-hero {
  position: relative;
  min-height: 540px;
  display: flex;
  align-items: center;
  padding: 160px 0 80px;
  background-image: linear-gradient(rgba(13,11,20,0.85), rgba(13,11,20,0.92)), url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.cat-hero::after {
  content: '';
  position: absolute;
  right: -60px;
  bottom: 30px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, var(--glow), transparent 70%);
  opacity: .5;
  pointer-events: none;
}
.cat-hero .container { position: relative; z-index: 2; }
.cat-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  background: rgba(0,229,160,0.1);
  border: 1px solid rgba(0,229,160,0.25);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  margin-bottom: 24px;
  width: fit-content;
}
.cat-hero-badge i { font-size: 13px; }
.cat-hero h1 {
  font-size: clamp(32px, 4.2vw, 48px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.01em;
  margin-bottom: 20px;
}
.cat-hero h1 .hl {
  color: var(--primary);
  position: relative;
  display: inline-block;
}
.cat-hero h1 .hl::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), transparent);
  transform: skewX(-20deg);
}
.cat-hero-sub {
  font-size: 16px;
  color: var(--text-dim);
  max-width: 640px;
  line-height: 1.8;
  margin-bottom: 32px;
}
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.hero-stats .stat-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-dim);
  transition: border-color .2s, box-shadow .2s;
}
.hero-stats .stat-chip i { color: var(--primary); font-size: 14px; }
.hero-stats .stat-chip strong { color: var(--text); font-weight: 700; font-size: 15px; margin-right: 2px; }
.hero-stats .stat-chip:hover { border-color: rgba(0,229,160,0.3); box-shadow: 0 0 12px var(--glow); }
/* ===== 通用板块 ===== */
.section {
  padding: var(--spacer) 0;
}
.section-head {
  margin-bottom: 48px;
}
.section-head .sec-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-head h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.01em;
}
.section-head p {
  color: var(--text-dim);
  font-size: 15px;
  margin-top: 12px;
  max-width: 640px;
  line-height: 1.75;
}
/* ===== 简介区 ===== */
.cat-intro {
  padding: 72px 0 24px;
}
.cat-intro .intro-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-card);
  padding: 36px 40px;
  box-shadow: var(--shadow-card);
}
.cat-intro .intro-box p {
  font-size: 16px;
  color: var(--text);
  line-height: 1.85;
  max-width: 900px;
}
/* ===== 精选指南 ===== */
.featured-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.featured-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
  display: flex;
  flex-direction: column;
}
.featured-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,229,160,0.4);
  box-shadow: var(--shadow-hover);
}
.featured-card .card-img {
  height: 220px;
  overflow: hidden;
  position: relative;
}
.featured-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.featured-card:hover .card-img img { transform: scale(1.03); }
.featured-card .card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(13,11,20,0.6));
  pointer-events: none;
}
.card-body {
  padding: 28px 30px 30px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  border-radius: 6px;
  background: rgba(0,229,160,0.1);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .03em;
  width: fit-content;
  margin-bottom: 14px;
}
.tag.orange { background: rgba(255,122,26,0.1); color: var(--accent); }
.card-body h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
  color: var(--text);
}
.card-body p {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.75;
  flex: 1;
  margin-bottom: 20px;
}
/* ===== 关联分类胶囊组 ===== */
.cat-related {
  padding: 24px 0 var(--spacer);
}
.related-wrapper {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 40px;
  box-shadow: var(--shadow-card);
}
.related-wrapper .section-head { margin-bottom: 28px; }
.pill-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.pill-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  transition: all .25s ease;
}
.pill-link i { color: var(--primary); }
.pill-link:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(0,229,160,0.08);
  box-shadow: 0 0 16px var(--glow);
  transform: translateY(-2px);
}
.pill-link:active { transform: translateY(0); }
/* ===== FAQ ===== */
.cat-faq {
  padding: 0 0 var(--spacer);
}
.cat-faq .section-head { text-align: center; }
.cat-faq .section-head p { margin-left: auto; margin-right: auto; }
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 20px;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.faq-item:hover { border-color: rgba(0,229,160,0.35); }
.faq-item.active { border-color: rgba(0,229,160,0.5); box-shadow: 0 0 20px rgba(0,229,160,0.12); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 26px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  user-select: none;
}
.faq-q .faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(0,229,160,0.1);
  color: var(--primary);
  font-size: 14px;
  font-weight: 400;
  transition: transform .3s ease, background .3s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #0D0B14;
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-item.active .faq-a { max-height: 260px; }
.faq-a-inner {
  padding: 0 26px 22px;
  border-top: 1px solid var(--border);
  margin: 0 26px 0;
  padding-top: 16px;
  padding-left: 0;
  padding-right: 0;
}
.faq-a-inner p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.75;
}
/* ===== CTA ===== */
.cat-cta {
  padding: 0 0 var(--spacer);
}
.cta-box {
  position: relative;
  background-image: linear-gradient(rgba(13,11,20,0.88), rgba(13,11,20,0.92)), url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  border-radius: 20px;
  padding: 64px 48px;
  text-align: center;
  border: 1px solid rgba(0,229,160,0.2);
  box-shadow: 0 0 40px rgba(0,229,160,0.08), var(--shadow-card);
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
  opacity: .7;
}
.cta-box h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}
.cta-box p {
  color: var(--text-dim);
  font-size: 15px;
  max-width: 520px;
  margin: 0 auto 32px;
  position: relative;
  z-index: 1;
  line-height: 1.75;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
/* ===== 页脚 ===== */
.site-footer {
  background: #0A0810;
  border-top: 1px solid var(--border);
  padding: 64px 0 0;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
}
.footer-brand .brand { font-size: 22px; margin-bottom: 12px; display: inline-flex; }
.footer-brand p {
  color: var(--text-dim);
  font-size: 14px;
  margin-top: 14px;
  line-height: 1.75;
}
.footer-brand .signature {
  color: rgba(255,255,255,0.45);
  font-size: 13px;
  font-style: italic;
  letter-spacing: .02em;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 8px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  border-radius: 1px;
  background: var(--primary);
}
.footer-col a {
  display: block;
  color: var(--text-dim);
  font-size: 14px;
  padding: 6px 0;
  transition: color .2s, transform .2s;
}
.footer-col a:hover {
  color: var(--primary);
  transform: translateX(4px);
}
.social-row {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}
.social-row a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 15px;
  transition: all .25s ease;
}
.social-row a:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 0 12px var(--glow);
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 24px 0 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--text-dim);
}
.footer-bottom p:first-child {
  color: rgba(255,255,255,0.4);
}
/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  .nav-links { gap: 0; }
  .nav-links a { padding: 8px 14px; font-size: 13px; }
  .related-wrapper { padding: 32px; }
}
@media (max-width: 767px) {
  :root { --spacer: 64px; }
  .site-nav {
    top: 12px;
    padding: 8px 10px 8px 16px;
    width: calc(100% - 20px);
  }
  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    width: 100%;
    background: rgba(13,11,20,0.96);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    box-shadow: 0 16px 40px rgba(0,0,0,0.5);
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    display: block;
    padding: 12px 16px;
    text-align: center;
    font-size: 15px;
  }
  .nav-links a.active::after { display: none; }
  .nav-toggle { display: flex; }
  .btn-nav { display: none; }
  .cat-hero { min-height: 440px; padding: 130px 0 60px; }
  .cat-hero h1 { font-size: 30px; }
  .cat-hero-sub { font-size: 15px; }
  .hero-stats { gap: 8px; }
  .hero-stats .stat-chip { padding: 6px 12px; font-size: 12px; }
  .section-head { margin-bottom: 32px; }
  .featured-grid { grid-template-columns: 1fr; }
  .featured-card .card-img { height: 180px; }
  .card-body { padding: 22px 22px 24px; }
  .card-body h3 { font-size: 18px; }
  .related-wrapper { padding: 24px 20px; }
  .pill-links { gap: 10px; }
  .pill-link { padding: 10px 16px; font-size: 13px; }
  .cat-intro .intro-box { padding: 26px 22px; }
  .cat-intro .intro-box p { font-size: 15px; }
  .faq-q { padding: 18px 20px; font-size: 14px; }
  .faq-a-inner { margin: 0 20px 0; padding-bottom: 18px; }
  .cta-box { padding: 44px 22px; }
  .cta-actions .btn { width: 100%; margin-bottom: 4px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .cat-hero { padding-top: 120px; }
  .hero-stats { flex-direction: column; align-items: stretch; }
  .hero-stats .stat-chip { justify-content: center; }
  .cat-hero-badge { font-size: 12px; padding: 5px 14px; }
}

/* roulang page: article */
:root {
  --bg: #0D0B14;
  --surface: #17131F;
  --surface-2: #1F1A2A;
  --primary: #00E5A0;
  --primary-hover: #2DF0B4;
  --accent: #FF7A1A;
  --text: #F2F0EB;
  --text-dim: #9B95A7;
  --border: rgba(255,255,255,0.08);
  --glow: rgba(0,229,160,0.35);
  --radius: 16px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.5), 0 0 0 1px var(--border);
  --container: 1200px;
  --space: 96px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 600px 300px at 85% 0%, rgba(0,229,160,0.06), transparent),
    radial-gradient(ellipse 700px 400px at 10% 100%, rgba(255,122,26,0.05), transparent);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color .25s ease;
}

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

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-pill);
  padding: 14px 28px;
  transition: all .28s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #0A1420;
  box-shadow: 0 0 20px var(--glow);
}

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 0 32px var(--glow);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 0 16px var(--glow);
}

.btn-primary:focus-visible {
  outline: 3px solid var(--glow);
  outline-offset: 2px;
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}

.btn-outline:hover {
  background: rgba(0,229,160,0.1);
  transform: translateY(-2px);
}

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

.btn-outline:focus-visible {
  outline: 3px solid var(--glow);
  outline-offset: 2px;
}

.btn-lg {
  padding: 18px 42px;
  font-size: 17px;
}

.btn-sm {
  padding: 10px 22px;
  font-size: 14px;
}

/* ---------- 悬浮导航 ---------- */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: calc(100% - 32px);
  max-width: 860px;
  background: rgba(13,11,20,0.72);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 32px rgba(0,0,0,0.35);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 16px 10px 24px;
}

.brand {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text);
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
}

.brand strong {
  color: var(--primary);
  font-weight: 800;
}

.brand span {
  color: var(--accent);
  font-weight: 800;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-dim);
  position: relative;
  padding: 6px 2px;
}

.nav-links a:hover {
  color: var(--text);
}

.nav-links a.active {
  color: var(--primary);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px var(--glow);
}

.btn-nav {
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 16px;
  align-items: center;
  justify-content: center;
  transition: border-color .25s ease, color .25s ease;
}

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

.nav-toggle:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ---------- 文章页主体 ---------- */
.article-page {
  padding-top: 130px;
  min-height: 60vh;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 32px;
}

.breadcrumb a {
  color: var(--text-dim);
  transition: color .2s ease;
}

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

.breadcrumb .sep {
  color: rgba(255,255,255,0.3);
}

.breadcrumb .current {
  color: var(--text);
  font-weight: 500;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  max-width: 60vw;
}

.article-header {
  margin-bottom: 40px;
}

.article-header-inner {
  max-width: 860px;
}

.article-header h1 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
  background: linear-gradient(90deg, var(--text) 60%, var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 14px;
  color: var(--text-dim);
}

.article-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-meta i {
  color: var(--primary);
  font-size: 13px;
}

.article-meta a {
  color: var(--accent);
}

.article-meta a:hover {
  color: var(--primary);
}

/* ---------- 文章正文区 ---------- */
.article-main {
  padding-bottom: 64px;
}

.article-container {
  max-width: 820px;
  margin: 0 auto;
}

.article-summary {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 24px 28px;
  margin-bottom: 40px;
  box-shadow: var(--shadow);
}

.article-summary p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-dim);
}

.article-summary::before {
  content: "\f10d";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 22px;
  color: var(--primary);
  opacity: 0.25;
  position: absolute;
  top: 18px;
  right: 20px;
}

.article-body {
  font-size: 16px;
  line-height: 1.85;
  color: rgba(242, 240, 235, 0.92);
}

.article-body p {
  margin: 0 0 1.6em;
}

.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin: 2.4em 0 1em;
  padding-bottom: 0.5em;
  border-bottom: 1px solid var(--border);
}

.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin: 2em 0 0.8em;
}

.article-body a {
  color: var(--primary);
  border-bottom: 1px solid transparent;
}

.article-body a:hover {
  border-bottom-color: var(--primary);
}

.article-body img {
  max-width: 100%;
  border-radius: var(--radius);
  margin: 1.5em auto;
  box-shadow: var(--shadow);
}

.article-body blockquote {
  border-left: 3px solid var(--primary);
  background: var(--surface);
  padding: 18px 22px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.5em 0;
  color: var(--text-dim);
  font-style: normal;
}

.article-body ul,
.article-body ol {
  padding-left: 1.5em;
  margin: 1em 0 1.6em;
}

.article-body li {
  margin-bottom: 0.6em;
}

.article-body li::marker {
  color: var(--primary);
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 14px;
}

.article-body th,
.article-body td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}

.article-body th {
  background: var(--surface-2);
  color: var(--primary);
  font-weight: 600;
}

.article-body tr:nth-child(even) td {
  background: rgba(255,255,255,0.02);
}

.article-body code {
  background: var(--surface-2);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 14px;
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  color: var(--primary);
}

.article-body pre {
  background: var(--surface);
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow-x: auto;
  margin: 1.5em 0;
}

.article-body pre code {
  background: none;
  padding: 0;
  color: var(--text);
}

.article-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2em 0;
}

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

/* ---------- 标签区 ---------- */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(0,229,160,0.25);
  background: rgba(0,229,160,0.06);
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
  transition: background .25s ease, border-color .25s ease;
}

.tag:hover {
  background: rgba(0,229,160,0.12);
  border-color: var(--primary);
}

/* ---------- 空态 ---------- */
.article-empty {
  text-align: center;
  padding: 80px 24px;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

.article-empty i {
  font-size: 42px;
  color: var(--text-dim);
  margin-bottom: 20px;
}

.article-empty h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
}

.article-empty .btn {
  margin-top: 24px;
}

/* ---------- 相关推荐 ---------- */
.related-section {
  padding: 80px 0 96px;
  background: linear-gradient(180deg, transparent, rgba(255,255,255,0.015));
  border-top: 1px solid var(--border);
}

.related-section .section-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 36px;
}

.related-section .section-head h2 {
  font-size: 26px;
  font-weight: 800;
  position: relative;
}

.related-section .section-head h2::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 8px;
  background: rgba(0,229,160,0.18);
  border-radius: 4px;
  z-index: -1;
}

.related-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
}

.related-card {
  display: flex;
  align-items: stretch;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0,229,160,0.3);
}

.related-card img {
  width: 160px;
  flex-shrink: 0;
  object-fit: cover;
  transition: transform .4s ease;
}

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

.related-info {
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
}

.related-info h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .25s ease;
}

.related-card:hover .related-info h3 {
  color: var(--primary);
}

.related-date {
  font-size: 13px;
  color: var(--text-dim);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.related-date::before {
  content: "\f133";
  font-family: "Font Awesome 6 Free";
  font-weight: 400;
  font-size: 12px;
  color: var(--accent);
}

.related-foot {
  text-align: center;
}

/* ---------- CTA 区 ---------- */
.cta-section {
  padding: 0 0 96px;
}

.cta-panel {
  position: relative;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border-radius: 24px;
  padding: 80px 48px;
  text-align: center;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}

.cta-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,11,20,0.93) 20%, rgba(13,11,20,0.68) 60%, rgba(13,11,20,0.82) 100%);
}

.cta-panel h2 {
  position: relative;
  z-index: 2;
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 12px;
}

.cta-panel h2 span {
  color: var(--primary);
}

.cta-panel p {
  position: relative;
  z-index: 2;
  font-size: 16px;
  color: var(--text-dim);
  margin-bottom: 32px;
}

.cta-panel .btn {
  position: relative;
  z-index: 2;
}

.cta-panel .btn i {
  transition: transform .25s ease;
}

.cta-panel .btn:hover i {
  transform: translateX(4px);
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: #0A0812;
  border-top: 1px solid var(--border);
  padding: 64px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand-col .brand {
  font-size: 22px;
  margin-bottom: 16px;
  display: inline-flex;
}

.footer-brand-col p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.8;
  margin-bottom: 20px;
  max-width: 320px;
}

.footer-icons {
  display: flex;
  gap: 10px;
}

.footer-icons a {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid rgba(0,229,160,0.3);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 14px;
  transition: background .25s ease, transform .25s ease, border-color .25s ease;
}

.footer-icons a:hover {
  background: rgba(0,229,160,0.12);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 18px;
  position: relative;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-dim);
  padding: 5px 0;
  transition: color .2s ease, transform .2s ease;
}

.footer-col a:hover {
  color: var(--primary);
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-dim);
}

.footer-bottom a {
  color: var(--text-dim);
}

.footer-bottom a:hover {
  color: var(--primary);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .related-card img {
    width: 140px;
  }
}

@media (max-width: 768px) {
  :root {
    --space: 64px;
  }

  .site-nav {
    top: 12px;
    width: calc(100% - 20px);
  }

  .nav-inner {
    padding: 8px 12px 8px 18px;
  }

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

  .btn-nav {
    display: none;
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    background: rgba(13,11,20,0.97);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    display: none;
    box-shadow: var(--shadow-lg);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 15px;
  }

  .nav-links a:hover {
    background: var(--surface-2);
  }

  .nav-links a.active {
    background: rgba(0,229,160,0.08);
  }

  .nav-links a.active::after {
    display: none;
  }

  .article-page {
    padding-top: 100px;
  }

  .article-header h1 {
    font-size: 26px;
  }

  .article-meta {
    gap: 12px 16px;
    font-size: 13px;
  }

  .article-summary {
    padding: 20px;
  }

  .article-summary p {
    font-size: 14px;
  }

  .article-body {
    font-size: 15px;
  }

  .article-body h2 {
    font-size: 21px;
  }

  .article-body h3 {
    font-size: 18px;
  }

  .article-body table {
    font-size: 13px;
  }

  .article-body th,
  .article-body td {
    padding: 8px 10px;
  }

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

  .related-card img {
    width: 120px;
  }

  .related-info {
    padding: 16px;
  }

  .related-info h3 {
    font-size: 15px;
  }

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

  .cta-panel {
    padding: 56px 24px;
  }

  .cta-panel h2 {
    font-size: 23px;
  }

  .cta-panel p {
    font-size: 14px;
  }

  .btn-lg {
    padding: 16px 34px;
    font-size: 15px;
  }

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

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .breadcrumb {
    font-size: 13px;
    margin-bottom: 24px;
  }
}

@media (max-width: 520px) {
  .article-header h1 {
    font-size: 23px;
  }

  .article-summary::before {
    display: none;
  }

  .related-card {
    flex-direction: row;
  }

  .related-card img {
    width: 100px;
    height: auto;
  }

  .related-info h3 {
    font-size: 14px;
    -webkit-line-clamp: 3;
  }

  .cta-panel {
    padding: 44px 18px;
  }

  .btn-lg {
    width: 100%;
  }

  .footer-icons {
    gap: 8px;
  }
}