:root {
  --bg: #fbfaf7; --fg: #1f1d1a; --muted: #6b665d; --line: #e4e0d8; --accent: #b4432c; --code: #f1ede5;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #16150f; --fg: #ece8df; --muted: #a39d91; --line: #2e2b24; --accent: #ef8a6f; --code: #221f18; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.6 system-ui, sans-serif; }
header { display: flex; gap: 1rem; align-items: center; padding: .75rem 1rem; border-bottom: 1px solid var(--line); position: relative; }
.home { font-weight: 700; color: var(--fg); text-decoration: none; }
#q { flex: 1; max-width: 22rem; padding: .35rem .6rem; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--fg); font: inherit; }
#results { position: absolute; top: 100%; left: 1rem; right: 1rem; max-width: 30rem; margin: 0; padding: .5rem 1rem; list-style: none; background: var(--bg); border: 1px solid var(--line); border-radius: 6px; z-index: 1; }
#results span { color: var(--muted); font-size: .85em; }
.frame { display: grid; grid-template-columns: 16rem minmax(0, 1fr); max-width: 72rem; margin: 0 auto; }
nav { padding: 1rem; border-right: 1px solid var(--line); }
nav summary { font-weight: 600; cursor: pointer; margin: .5rem 0; }
nav ul { list-style: none; padding-left: .75rem; margin: 0; }
nav a { color: var(--muted); text-decoration: none; display: block; padding: .15rem 0; }
nav a[aria-current] { color: var(--accent); font-weight: 600; }
main { padding: 1rem 2rem 4rem; min-width: 0; }
main a { color: var(--accent); }
h1, h2, h3 { line-height: 1.25; }
code { background: var(--code); padding: .1em .3em; border-radius: 4px; font-size: .92em; }
pre { background: var(--code); padding: .75rem 1rem; border-radius: 6px; overflow-x: auto; }
pre code { padding: 0; background: none; }
table { border-collapse: collapse; display: block; overflow-x: auto; }
th, td { border: 1px solid var(--line); padding: .35rem .6rem; text-align: left; vertical-align: top; }
blockquote { margin: 1rem 0; padding: .25rem 1rem; border-left: 3px solid var(--accent); color: var(--muted); }
.diagram { margin: 1.25rem 0; overflow-x: auto; }
.diagram pre.mermaid { background: none; text-align: center; }
.diagram pre.mermaid:not([data-processed]) { background: var(--code); text-align: left; }
.credit { color: var(--muted); font-size: .85em; margin-top: 3rem; }
@media (max-width: 48rem) {
  .frame { grid-template-columns: 1fr; }
  nav { border-right: 0; border-bottom: 1px solid var(--line); }
  main { padding: 1rem; }
}