:root {
  --bg: #ffffff;
  --fg: #1f2328;
  --muted: #59636e;
  --line: #d1d9e0;
  --link: #0969da;
  --code: #f6f8fa;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --fg: #e6edf3;
    --muted: #9198a1;
    --line: #30363d;
    --link: #4493f8;
    --code: #161b22;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
.top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--line);
}
.brand { font-weight: 600; font-size: 1.05rem; color: var(--fg); }
.tag { color: var(--muted); font-size: 0.85rem; }
.wrap {
  display: flex;
  align-items: flex-start;
  gap: 2.5rem;
  max-width: 1080px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}
.side { flex: 0 0 180px; position: sticky; top: 1rem; }
.navhead {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.side ul { list-style: none; margin: 0; padding: 0; }
.side li { margin: 0.15rem 0; }
.side a { font-size: 0.9rem; }
main { flex: 1 1 auto; min-width: 0; }
main h1 { font-size: 1.75rem; margin: 0 0 1rem; }
main h2 { font-size: 1.2rem; margin: 2rem 0 0.6rem; padding-bottom: 0.25rem; border-bottom: 1px solid var(--line); }
main h3 { font-size: 1rem; margin: 1.5rem 0 0.4rem; }
code {
  background: var(--code);
  padding: 0.1em 0.35em;
  border-radius: 5px;
  font-size: 0.88em;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}
pre {
  background: var(--code);
  padding: 0.85rem 1rem;
  border-radius: 6px;
  overflow-x: auto;
}
pre code { background: none; padding: 0; }
table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: 0.92rem; }
th, td { border: 1px solid var(--line); padding: 0.4rem 0.6rem; text-align: left; vertical-align: top; }
th { background: var(--code); }
blockquote { margin: 1rem 0; padding: 0 1rem; border-left: 3px solid var(--line); color: var(--muted); }
.foot {
  border-top: 1px solid var(--line);
  padding: 1rem 1.5rem 2rem;
  color: var(--muted);
  font-size: 0.85rem;
}
@media (max-width: 720px) {
  .wrap { flex-direction: column; gap: 1rem; }
  .side { position: static; }
}