/* 分类落地页 */
body.hub-page {
  background:
    radial-gradient(900px 420px at 10% -10%, rgba(56, 189, 248, 0.16), transparent 55%),
    radial-gradient(800px 380px at 90% 0%, rgba(52, 211, 153, 0.12), transparent 50%),
    linear-gradient(180deg, #0b1220 0%, #111827 100%);
  color: #e5eef8;
  min-height: 100vh;
  padding: 20px 16px 48px;
}
body.hub-page .container {
  max-width: 960px;
  margin: 0 auto;
}
body.hub-page .hub-hero {
  margin: 12px 0 28px;
}
body.hub-page .hub-hero h1 {
  margin: 0 0 10px;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  letter-spacing: 0.02em;
}
body.hub-page .hub-hero p {
  margin: 0;
  max-width: 42rem;
  line-height: 1.7;
  color: #94a3b8;
}
body.hub-page .hub-hero .hub-meta {
  margin-top: 12px;
  font-size: 13px;
  color: #64748b;
}
body.hub-page .hub-paths,
body.hub-page .hub-list {
  background: rgba(15, 23, 42, 0.72);
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 16px;
  padding: 20px 22px;
  margin-bottom: 18px;
}
body.hub-page h2 {
  margin: 0 0 14px;
  font-size: 1.1rem;
  color: #f1f5f9;
}
body.hub-page .hub-path-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
body.hub-page .hub-path-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(30, 41, 59, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.2);
  text-decoration: none;
  color: inherit;
}
body.hub-page .hub-path-card:hover {
  border-color: #38bdf8;
}
body.hub-page .hub-path-card strong {
  color: #e0f2fe;
}
body.hub-page .hub-path-card span {
  font-size: 13px;
  color: #94a3b8;
  line-height: 1.5;
}
body.hub-page .hub-path-card em {
  font-style: normal;
  font-size: 13px;
  color: #38bdf8;
  font-weight: 650;
}
body.hub-page .hub-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}
body.hub-page .hub-list a {
  display: block;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(30, 41, 59, 0.75);
  border: 1px solid rgba(148, 163, 184, 0.18);
  text-decoration: none;
  color: inherit;
}
body.hub-page .hub-list a:hover {
  border-color: #34d399;
}
body.hub-page .hub-title {
  display: block;
  font-weight: 650;
  color: #f8fafc;
}
body.hub-page .hub-desc {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: #94a3b8;
  line-height: 1.45;
}
body.hub-page .hub-error {
  color: #fda4af;
}
body.hub-page .hub-back {
  display: inline-block;
  margin-bottom: 8px;
  color: #7dd3fc;
  text-decoration: none;
  font-size: 14px;
}
body.hub-page #demo-related {
  background: rgba(15, 23, 42, 0.85);
  border-color: rgba(148, 163, 184, 0.22);
}
body.hub-page #demo-related h2,
body.hub-page #demo-related .t {
  color: #f8fafc;
}
body.hub-page #demo-related .demo-related-sub,
body.hub-page #demo-related .d {
  color: #94a3b8;
}
body.hub-page #demo-related a {
  background: rgba(30, 41, 59, 0.9);
  border-color: rgba(148, 163, 184, 0.25);
  color: #e2e8f0;
}