:root {
  --bg: #edf6f2;
  --fg: #1a2e28;
  --muted: #5f746c;
  --card: #ffffff;
  --accent: #2a9d7a;
  --line: rgba(26, 46, 40, 0.08);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--fg);
  background: linear-gradient(180deg, #e7f3ee 0%, var(--bg) 40%, #f7faf8 100%);
  min-height: 100vh;
  line-height: 1.7;
}
.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
}
.brand { font-weight: 700; color: var(--fg); text-decoration: none; }
nav { display: flex; gap: 14px; flex-wrap: wrap; }
nav a, .links a { color: var(--accent); text-decoration: none; font-size: 14px; }
nav a:hover, .links a:hover { text-decoration: underline; }
.doc, .home {
  max-width: 720px;
  margin: 24px auto 48px;
  padding: 28px 22px;
  background: var(--card);
  border-radius: 16px;
  box-shadow: 0 8px 28px rgba(26, 46, 40, 0.06);
}
h1 { font-size: 28px; margin: 0 0 12px; line-height: 1.3; }
h2 { font-size: 18px; margin: 28px 0 10px; }
h3 { font-size: 16px; margin: 20px 0 8px; }
p, li { color: var(--fg); font-size: 15px; }
.lead { color: var(--muted); font-size: 16px; }
ul, ol { padding-left: 1.25em; }
hr { border: 0; border-top: 1px solid var(--line); margin: 24px 0; }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92em;
  background: #f1f6f3;
  padding: 0.1em 0.35em;
  border-radius: 4px;
}
.foot { text-align: center; padding: 8px 16px 40px; color: var(--muted); font-size: 13px; }
.foot a { color: var(--muted); }
.beian { margin-top: 4px; }
.links { list-style: none; padding: 0; }
.links li { margin: 10px 0; }
@media (max-width: 640px) {
  .doc, .home { margin: 12px; padding: 20px 16px; }
  .top { flex-direction: column; align-items: flex-start; }
}