:root {
  --bg: #fbfbfa; --fg: #1d1d1f; --muted: #5f6368; --line: #e3e3e0; --accent: #0b57d0; --code: #f1f1ee;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #111214; --fg: #ececec; --muted: #a0a3a8; --line: #2a2c30; --accent: #8ab4f8; --code: #1c1e21; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 48px 16px 64px; }
header { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap;
  padding-bottom: 16px; border-bottom: 1px solid var(--line); margin-bottom: 32px; }
header a.brand { font-weight: 700; font-size: 20px; color: var(--fg); text-decoration: none; }
nav a { margin-left: 16px; color: var(--muted); text-decoration: none; font-size: 14px; }
nav a:first-child { margin-left: 0; }
nav a:hover, a { color: var(--accent); }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 20px; margin: 32px 0 8px; }
p, li { color: var(--fg); }
.lead { color: var(--muted); font-size: 18px; margin-top: 0; }
.muted { color: var(--muted); font-size: 14px; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 14px; background: var(--code); border-radius: 6px; }
code { padding: 1px 5px; }
pre { padding: 12px 14px; overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }