:root{
  --bg:#ffffff;--fg:#1b2330;--mut:#4a5568;--card:#f4f6fa;--line:#d5dbe5;
  --link:#1d4ed8;--accent:#2563eb;
  --code:#e9edf4;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#10151d;--fg:#e6eaf1;--mut:#a9b3c2;--card:#18202b;--line:#2b3646;
    --link:#8db4ff;--accent:#5b8cff;
    --code:#222c3a;
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
a{color:var(--link);text-underline-offset:2px}
a:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:3px}
.skip{position:absolute;left:-999px;top:0;background:var(--bg);color:var(--fg);padding:8px 12px;z-index:10}
.skip:focus{left:8px;top:8px}
header.site{border-bottom:1px solid var(--line);background:var(--card)}
.wrap{max-width:860px;margin:0 auto;padding:0 20px}
header.site .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 20px;padding-top:12px;padding-bottom:12px}
.brand{font-weight:700;font-size:1.1rem;color:var(--fg);text-decoration:none}
nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px 18px}
nav a{display:inline-block;padding:4px 0}
nav a[aria-current="page"]{font-weight:700;color:var(--fg);text-decoration:none;border-bottom:2px solid var(--accent)}
main{padding:28px 0 48px}
h1{font-size:2rem;line-height:1.2;margin:0 0 .4em}
h2{font-size:1.35rem;line-height:1.3;margin:2em 0 .5em;padding-top:.3em;border-top:1px solid var(--line)}
h3{font-size:1.05rem;margin:1.4em 0 .3em}
p,ul,ol,dl{margin:.6em 0}
li{margin:.3em 0}
.lede{font-size:1.1rem;color:var(--mut)}
.meta{color:var(--mut);font-size:.92rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px 18px;margin:1em 0}
.card>:first-child{margin-top:0}.card>:last-child{margin-bottom:0}
.quote{border-left:4px solid var(--accent);margin:1em 0;padding:.2em 1em;background:var(--card);border-radius:0 8px 8px 0}
.tablewrap{overflow-x:auto;margin:1em 0;border:1px solid var(--line);border-radius:8px}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:.93rem}
caption{text-align:left;padding:8px 12px;font-weight:600}
th,td{text-align:left;vertical-align:top;padding:8px 12px;border-top:1px solid var(--line)}
thead th{background:var(--card);border-top:0}
code{background:var(--code);padding:1px 5px;border-radius:4px;font:.88em ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;overflow-wrap:anywhere}
details{border:1px solid var(--line);border-radius:8px;margin:.6em 0;background:var(--card)}
summary{cursor:pointer;padding:10px 14px;font-weight:600}
details>*:not(summary){margin-left:14px;margin-right:14px}
details>:last-child{margin-bottom:14px}
.toc{columns:2;column-gap:2em;padding-left:1.2em}
@media (max-width:560px){.toc{columns:1}body{font-size:15.5px}h1{font-size:1.65rem}}
footer.site{border-top:1px solid var(--line);padding:20px 0 40px;color:var(--mut);font-size:.9rem}
footer.site p{margin:.4em 0}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
@media (max-width:600px){
  table{min-width:0}
  thead{position:absolute;left:-9999px}
  tr,td{display:block}
  tr{border-top:1px solid var(--line);padding:6px 0}
  tr:first-child{border-top:0}
  td{border:0;padding:4px 12px}
  td::before{content:attr(data-label);display:block;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.03em;color:var(--mut)}
}