:root {
  --bg: #0f172a;
  --card: #1e293b;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #818cf8;
  --line: #334155;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 15px;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 860px; margin: 0 auto; padding: 28px 20px 64px; }
.doc-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  padding: 14px 0 22px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 24px;
  font-size: 14px;
}
h1 { font-size: 1.55rem; letter-spacing: -0.02em; margin: 0 0 12px; }
h2 { font-size: 1.12rem; margin: 28px 0 10px; color: #f8fafc; }
h3 { font-size: 1rem; margin: 18px 0 8px; color: #cbd5e1; font-weight: 700; }
p, li { color: var(--text); }
.muted { color: var(--muted); font-size: 13px; }
.box {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 20px;
  margin: 14px 0;
}
ul { padding-left: 1.25rem; }
li { margin: 6px 0; }
footer.doc-foot {
  margin-top: 40px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}
.icp-beian {
  margin-top: 12px;
  font-size: 12px;
  text-align: center;
}
.icp-beian a {
  color: var(--muted);
}
.icp-beian a:hover {
  color: var(--text);
  text-decoration: underline;
}