:root { --bg: #ffffff; --fg: #0f172a; --muted: #475569; --line: #e2e8f0; --accent: #2563eb; --soft: #f1f5f9; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --bg: #0b1220; --fg: #e5e7eb; --muted: #94a3b8; --line: #243044; --accent: #60a5fa; --soft: #111a2e; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
.bar { position: sticky; top: 0; z-index: 2; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: .75rem; padding: .7rem 1rem; background: var(--bg); border-bottom: 1px solid var(--line); }
.bar .brand { font-weight: 700; color: var(--fg); text-decoration: none; } .bar nav { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }
.bar button, .btn { background: var(--accent); color: #fff; border: 0; padding: .45rem .9rem; border-radius: .5rem; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; display: inline-block; }
.layout { display: grid; grid-template-columns: 17rem minmax(0, 1fr); gap: 2rem; max-width: 76rem; margin: 0 auto; padding: 1.5rem 1rem 4rem; }
.toc { position: sticky; top: 4.2rem; align-self: start; max-height: calc(100vh - 5rem); overflow: auto; font-size: .9rem; border-right: 1px solid var(--line); padding-right: 1rem; }
.toc ol { list-style: none; padding: 0; margin: .5rem 0 0; } .toc li { margin: .25rem 0; } .toc li.d3 { padding-left: 1rem; } .toc a { text-decoration: none; color: var(--muted); } .toc a:hover { color: var(--accent); }
.doc { min-width: 0; max-width: 52rem; }
.doc h1 { font-size: 2rem; line-height: 1.2; } .doc h2 { margin-top: 2.2rem; padding-bottom: .3rem; border-bottom: 1px solid var(--line); } .doc h3 { margin-top: 1.6rem; }
.anchor { margin-left: .4rem; text-decoration: none; opacity: 0; font-weight: 400; } h1:hover .anchor, h2:hover .anchor, h3:hover .anchor { opacity: .6; }
.doc code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9em; background: var(--soft); padding: .1em .35em; border-radius: .3rem; }
.doc pre { background: #0b1220; color: #e5e7eb; padding: 1rem; border-radius: .6rem; overflow-x: auto; } .doc pre code { background: none; padding: 0; color: inherit; }
.doc table { border-collapse: collapse; width: 100%; display: block; overflow-x: auto; margin: 1rem 0; } .doc th, .doc td { border: 1px solid var(--line); padding: .45rem .65rem; text-align: left; vertical-align: top; } .doc th { background: var(--soft); }
.doc blockquote { margin: 1rem 0; padding: .1rem 1rem; border-left: 4px solid var(--accent); background: var(--soft); }
.foot { margin-top: 3rem; color: var(--muted); font-size: .85rem; border-top: 1px solid var(--line); padding-top: 1rem; } .foot .url { font-family: ui-monospace, monospace; }
.index { max-width: 52rem; margin: 2rem auto; padding: 0 1rem; } .index .cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr)); gap: 1rem; margin: 1.5rem 0; } .index article { border: 1px solid var(--line); border-radius: .8rem; padding: 1.2rem; }
@media (max-width: 52rem) { .layout { grid-template-columns: 1fr; } .toc { position: static; max-height: none; border-right: 0; border-bottom: 1px solid var(--line); padding: 0 0 1rem; } }
@media print {
  :root { --bg: #fff; --fg: #000; --muted: #333; --line: #bbb; --accent: #000; --soft: #f3f3f3; }
  body { font-size: 11pt; line-height: 1.45; }
  .bar, .toc, .anchor, .foot .url { display: none; }
  .layout { display: block; max-width: none; padding: 0; } .doc { max-width: none; }
  .doc h1, .doc h2, .doc h3 { break-after: avoid; } .doc pre, .doc table, .doc tr, .doc blockquote { break-inside: avoid; }
  .doc pre { background: #f3f3f3; color: #000; border: 1px solid #bbb; white-space: pre-wrap; word-break: break-word; } .doc code { background: #f3f3f3; }
  .doc table { display: table; font-size: 9.5pt; } a { color: #000; text-decoration: none; } .doc a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 9pt; }
}
.index table { border-collapse: collapse; width: 100%; margin: 1rem 0; } .index th, .index td { border: 1px solid var(--line); padding: .45rem .65rem; text-align: left; vertical-align: top; } .index thead th { background: var(--soft); }
.index .btn { color: #fff; }