:root {
  color-scheme: light dark;
  --bg: #fbfaf7; --surface: #ffffff; --fg: #1b1f24; --muted: #59636e;
  --border: #d9dde2; --accent: #0b5cad; --accent-fg: #ffffff; --code-bg: #f1f2f4;
  --ok: #1a7f37; --warn: #9a6700; --bad: #b42318; --info: #5a4ab5;
  --radius: 10px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116; --surface: #161b22; --fg: #e6edf3; --muted: #9da7b3;
    --border: #30363d; --accent: #6cb6ff; --accent-fg: #0e1116; --code-bg: #1f252d;
    --ok: #56d364; --warn: #e3b341; --bad: #ff7b72; --info: #b8a8ff;
  }
}
* { box-sizing: border-box; }
html { background: var(--bg); color: var(--fg); font: 16px/1.6 var(--font); }
body { margin: 0; }
a { color: var(--accent); text-underline-offset: 2px; }
a:focus-visible, button:focus-visible, [tabindex]:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.skip-link { position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--accent-fg); padding: .5rem 1rem; z-index: 10; }
.skip-link:focus { left: 1rem; top: 1rem; }
.site-header { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1.5rem; padding: .85rem 1.5rem; border-bottom: 1px solid var(--border); background: var(--surface); }
.brand { font-weight: 700; font-size: 1.1rem; color: var(--fg); text-decoration: none; }
.brand small { font-weight: 500; color: var(--muted); margin-left: .5rem; font-size: .85rem; }
.site-header nav { display: flex; gap: 1.25rem; margin-left: auto; flex-wrap: wrap; }
.site-header nav a { color: var(--muted); text-decoration: none; font-weight: 500; }
.site-header nav a:hover { color: var(--fg); text-decoration: underline; }
code, pre { font-family: var(--mono); font-size: .9em; }
:not(pre) > code { background: var(--code-bg); padding: .1em .35em; border-radius: 4px; }
pre { background: var(--code-bg); padding: 1rem; border-radius: var(--radius); overflow-x: auto; line-height: 1.45; }
footer.site-footer { color: var(--muted); font-size: .875rem; border-top: 1px solid var(--border); padding: 1.25rem 1.5rem; }

.shell { display: grid; grid-template-columns: minmax(0, 1fr); max-width: 1180px; margin: 0 auto; }
@media (min-width: 900px) { .shell { grid-template-columns: 250px minmax(0, 1fr); } }
.site-nav { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--border); }
@media (min-width: 900px) { .site-nav { border-bottom: 0; border-right: 1px solid var(--border); position: sticky; top: 0; align-self: start; max-height: 100vh; overflow-y: auto; } }
.site-nav h2 { font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 1.25rem 0 .4rem; }
.site-nav h2:first-child { margin-top: 0; }
.site-nav ul { list-style: none; margin: 0; padding: 0; }
.site-nav li a { display: block; padding: .25rem .5rem; margin-left: -.5rem; border-radius: 6px; color: var(--fg); text-decoration: none; font-size: .95rem; }
.site-nav li a:hover { background: var(--code-bg); }
.site-nav li a[aria-current="page"] { background: var(--code-bg); color: var(--accent); font-weight: 600; }
main.content { padding: 1.5rem; min-width: 0; }
@media (min-width: 900px) { main.content { padding: 2rem 3rem; } }
.doc { max-width: 78ch; }
.doc h1 { font-size: 2rem; line-height: 1.25; margin-top: 0; }
.doc h2 { margin-top: 2.25rem; padding-bottom: .3rem; border-bottom: 1px solid var(--border); }
.doc h1, .doc h2, .doc h3, .doc h4 { scroll-margin-top: 1rem; }
.doc .anchor { margin-left: .4rem; color: var(--muted); text-decoration: none; opacity: 0; font-weight: 400; }
.doc :is(h1, h2, h3, h4, h5, h6):hover .anchor, .doc .anchor:focus { opacity: 1; }
.doc img { max-width: 100%; height: auto; }
.doc pre.mermaid { background: transparent; text-align: center; }
.doc blockquote { margin: 1rem 0; padding: .25rem 1rem; border-left: 4px solid var(--border); color: var(--muted); }
.doc table { border-collapse: collapse; width: 100%; }
.doc th, .doc td { border: 1px solid var(--border); padding: .45rem .7rem; text-align: left; vertical-align: top; }
.doc th { background: var(--code-bg); }
.table-scroll { overflow-x: auto; margin: 1rem 0; }
.doc-meta { color: var(--muted); font-size: .875rem; margin-top: 2.5rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.hero { margin-bottom: 2rem; }
.hero .tagline { font-size: 1.15rem; color: var(--muted); margin: .25rem 0 0; }
.section-cards { max-width: 78ch; margin-top: 2.5rem; }
.section-cards > h2 { margin: 0 0 .5rem; padding-bottom: .3rem; border-bottom: 1px solid var(--border); }
.section-cards h3 { font-size: 1rem; margin: 1.25rem 0 .6rem; color: var(--muted); }
.cards { display: grid; gap: .75rem; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
.card { display: block; padding: .9rem 1rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--fg); text-decoration: none; }
.card:hover { border-color: var(--accent); }
.card strong { display: block; color: var(--accent); margin-bottom: .2rem; }
.card span { color: var(--muted); font-size: .9rem; }
.dk-toolbar { position: absolute; z-index: 20; display: flex; gap: .25rem; padding: .3rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); box-shadow: 0 6px 24px rgb(0 0 0 / .18); font: 500 .875rem/1.2 var(--font); opacity: 1; transform: translateY(0); transition: opacity .12s ease, transform .12s ease; }
.dk-toolbar[hidden] { display: none; }
.dk-toolbar.dk-entering { opacity: 0; transform: translateY(4px); }
.dk-toolbar button, .dk-dialog button { font: inherit; color: var(--fg); background: transparent; border: 1px solid transparent; border-radius: 6px; padding: .45rem .7rem; min-height: 2.25rem; cursor: pointer; }
.dk-toolbar button:hover { background: var(--code-bg); }
.dk-toolbar button.dk-primary, .dk-dialog button.dk-primary { background: var(--accent); color: var(--accent-fg); }
.dk-toolbar button.dk-primary:hover { filter: brightness(1.08); }
.dk-toolbar kbd { font: inherit; font-size: .75em; opacity: .7; margin-left: .3rem; }
@media (pointer: coarse) { .dk-toolbar button { min-height: 2.75rem; padding: .6rem .85rem; } .dk-toolbar kbd { display: none; } }
.dk-toast { position: fixed; left: 50%; bottom: 1.5rem; z-index: 30; max-width: min(90vw, 36rem); transform: translate(-50%, 0); padding: .6rem 1rem; border-radius: var(--radius); background: var(--fg); color: var(--bg); font-size: .9rem; box-shadow: 0 6px 24px rgb(0 0 0 / .25); opacity: 0; pointer-events: none; transition: opacity .15s ease, transform .15s ease; }
.dk-toast.dk-visible { opacity: 1; transform: translate(-50%, -.25rem); }
.dk-dialog { max-width: min(92vw, 44rem); width: 100%; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--fg); padding: 1.25rem; }
.dk-dialog::backdrop { background: rgb(0 0 0 / .45); }
.dk-dialog h2 { margin: 0 0 .5rem; font-size: 1.1rem; }
.dk-dialog p { margin: 0 0 .75rem; color: var(--muted); }
.dk-dialog textarea { width: 100%; min-height: 14rem; font: .85rem/1.45 var(--mono); color: var(--fg); background: var(--code-bg); border: 1px solid var(--border); border-radius: 6px; padding: .6rem; resize: vertical; }
.dk-dialog .dk-actions { display: flex; justify-content: flex-end; margin-top: .75rem; }
@media (prefers-reduced-motion: reduce) { .dk-toolbar, .dk-toast { transition: none; } .dk-toolbar.dk-entering { transform: none; } .dk-toast.dk-visible { transform: translate(-50%, 0); } }