:root {
  --bg: #ffffff; --fg: #1d1f23; --muted: #5d636e; --line: #e3e5e8; --code-bg: #f5f6f8; --link: #0b5cad; --accent: #0b5cad;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #15171a; --fg: #e6e8eb; --muted: #9aa1ab; --line: #2b2f35; --code-bg: #1d2024; --link: #6cb2ff; --accent: #6cb2ff; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--link); }
header { border-bottom: 1px solid var(--line); padding: 12px 16px; }
header .home { font-weight: 700; text-decoration: none; color: var(--fg); }
.layout { display: grid; grid-template-columns: 240px minmax(0, 1fr); max-width: 1100px; margin: 0 auto; }
nav { padding: 16px; border-right: 1px solid var(--line); font-size: 14px; }
nav p { margin: 16px 0 4px; color: var(--muted); font-weight: 600; text-transform: uppercase; font-size: 12px; letter-spacing: .04em; }
nav ul { list-style: none; margin: 0; padding: 0; }
nav li a { display: block; padding: 3px 0; text-decoration: none; color: var(--fg); }
nav li a[aria-current="page"] { color: var(--accent); font-weight: 600; }
main { padding: 16px 32px 48px; min-width: 0; max-width: 820px; }
h1, h2, h3 { line-height: 1.25; }
h2 { margin-top: 2em; padding-bottom: .2em; border-bottom: 1px solid var(--line); }
code { font: 14px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; background: var(--code-bg); padding: .1em .3em; border-radius: 4px; }
pre { background: var(--code-bg); padding: 12px 16px; border-radius: 6px; overflow-x: auto; }
pre code { padding: 0; background: none; }
table { border-collapse: collapse; display: block; overflow-x: auto; max-width: 100%; }
th, td { border: 1px solid var(--line); padding: 6px 10px; text-align: left; vertical-align: top; }
footer { margin-top: 48px; padding-top: 12px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; }
  nav { border-right: none; border-bottom: 1px solid var(--line); }
  main { padding: 16px; }
}