:root {
  color-scheme: dark;
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  background: #111318;
  color: #f0ebdf;
  line-height: 1.65;
  --gold: #f1bc68;
  --muted: #c8bfad;
  --line: #3c3830;
  --panel: #1c1c20;
}

* { box-sizing: border-box; }
body { margin: 0; }
a { color: var(--gold); text-underline-offset: .2em; overflow-wrap: anywhere; }
a:focus-visible, summary:focus-visible, .scroll:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
h1, h2, h3, h4 { line-height: 1.25; scroll-margin-block-start: 1rem; }
h1 { font-size: clamp(1.8rem, 4vw, 3rem); }
h2 { font-size: clamp(1.35rem, 3vw, 1.9rem); margin-block-start: 2rem; }
main { inline-size: min(100% - 2rem, 65rem); margin: 0 auto; padding-block: 2rem 4rem; }
.site-head { border-block-end: 1px solid var(--line); }
.site-head nav {
  inline-size: min(100% - 2rem, 65rem); margin: auto; padding-block: 1rem; display: flex; flex-wrap: wrap; gap: .75rem 1.5rem;
}
.intro { max-inline-size: 48rem; margin-block-end: 2.25rem; }
.eyebrow, .guide span { font-size: .78rem; font-weight: 700; letter-spacing: .12em; color: var(--gold); }
.guide, .toc { padding: 1rem 1.3rem; border: 1px solid var(--line); background: var(--panel); margin-block-end: 1.2rem; }
.guide h2 { margin-block: .45rem .25rem; }
.guide p { margin-block: .25rem .5rem; }
.guide small, footer { color: var(--muted); }
.toc ol { columns: 2 15rem; margin-block-end: 0; }
.toc li { break-inside: avoid; margin-block-end: .35rem; }
.catalogue { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr)); gap: .85rem; }
.catalogue li { border: 1px solid var(--line); padding: 1rem; background: var(--panel); }
.catalogue span, .catalogue strong { display: block; }
.catalogue span, .catalogue p { color: var(--muted); }
.catalogue p { margin-block: .65rem 0; }
article { min-inline-size: 0; overflow-wrap: anywhere; }
article li { margin-block-end: .25rem; }
article img { display: block; max-inline-size: 100%; block-size: auto; }
.scroll { max-inline-size: 100%; overflow: auto; margin-block: 1rem; }
table { border-collapse: collapse; inline-size: 100%; min-inline-size: 40rem; background: var(--panel); }
th, td { padding: .6rem .7rem; text-align: start; vertical-align: top; border: 1px solid var(--line); }
th { color: var(--gold); background: #24211d; }
.align-left { text-align: left; }
.align-center { text-align: center; }
.align-right { text-align: right; }
pre { background: var(--panel); padding: .9rem; border: 1px solid var(--line); white-space: pre-wrap; overflow-wrap: anywhere; }
code { color: #ffd99f; }
blockquote { border-inline-start: 2px solid var(--gold); margin-inline: 0; padding-inline: 1rem 0; }
.diagram { margin-inline: 0; }
.diagram .scroll { background: #faf9f5; padding: .65rem; }
.diagram img { inline-size: min(100%, 62rem); min-inline-size: 38rem; margin-inline: auto; }
.internal-reference { color: var(--muted); }
footer { border-block-start: 1px solid var(--line); padding: 1rem; text-align: center; }