:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #16181d;
  --muted: #5d6573;
  --line: #e2e5ea;
  --accent: #2f5bea;
  --code: #f0f2f5;
  --note: #eef3ff;
  --radius: 10px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --panel: #171a21;
    --text: #e8eaee;
    --muted: #9aa3b2;
    --line: #2a2f3a;
    --accent: #7b98ff;
    --code: #1f2430;
    --note: #1a2235;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
a { color: var(--accent); }
header.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 12px 24px; background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 2; }
header.top .brand { font-weight: 700; font-size: 17px; color: var(--text); text-decoration: none; }
header.top .brand span { color: var(--muted); font-weight: 500; }
header.top nav { display: flex; gap: 16px; flex-wrap: wrap; }
header.top nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
header.top nav a:hover { color: var(--text); }
.layout { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 32px; max-width: 1240px; margin: 0 auto; padding: 24px; }
nav.side { position: sticky; top: 72px; align-self: start; max-height: calc(100vh - 96px); overflow-y: auto; }
nav.side h2 { font-size: 12px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); margin: 16px 0 6px; }
nav.side h2:first-child { margin-top: 0; }
nav.side ul { list-style: none; margin: 0; padding: 0; }
nav.side li a { display: block; padding: 4px 10px; border-radius: 6px; color: var(--text); text-decoration: none; font-size: 15px; }
nav.side li a:hover { background: var(--code); }
nav.side li a.active { background: var(--note); color: var(--accent); font-weight: 600; }
main.doc { min-width: 0; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 36px 40px; }
main.doc h1 { font-size: 30px; line-height: 1.25; margin: 0 0 16px; }
main.doc h2 { font-size: 22px; margin: 36px 0 12px; padding-top: 8px; border-top: 1px solid var(--line); }
main.doc h3 { font-size: 17px; margin: 24px 0 8px; }
main.doc h4 { font-size: 15px; margin: 18px 0 6px; }
main.doc p, main.doc li { max-width: 78ch; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13.5px; background: var(--code); padding: 1px 5px; border-radius: 5px; overflow-wrap: anywhere; }
pre { background: var(--code); border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; overflow-x: auto; line-height: 1.45; }
pre code { background: none; padding: 0; font-size: 13px; overflow-wrap: normal; }
.table-wrap { overflow-x: auto; margin: 12px 0 20px; }
table { border-collapse: collapse; width: 100%; font-size: 14.5px; }
th, td { text-align: left; vertical-align: top; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-size: 12.5px; text-transform: uppercase; letter-spacing: .4px; white-space: nowrap; }
.note { background: var(--note); border-left: 3px solid var(--accent); border-radius: 6px; padding: 2px 16px; margin: 16px 0; }
hr { border: none; border-top: 1px solid var(--line); margin: 28px 0; }
.md-link { margin-top: 40px; font-size: 14px; color: var(--muted); }
footer.foot { max-width: 1240px; margin: 0 auto; padding: 8px 24px 40px; color: var(--muted); font-size: 14px; }
@media (max-width: 860px) {
  header.top { padding: 10px 16px; position: static; }
  .layout { display: block; padding: 12px 16px; }
  nav.side { position: static; max-height: none; margin-bottom: 16px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; }
  nav.side ul { display: flex; flex-wrap: wrap; gap: 4px; }
  nav.side li a { padding: 4px 8px; font-size: 14px; border: 1px solid var(--line); }
  main.doc { padding: 18px 16px 28px; }
  main.doc h1 { font-size: 24px; }
  main.doc h2 { font-size: 19px; }
  th, td { padding: 6px; }
}