:root{
  --bg:#ffffff; --fg:#16181d; --muted:#5c6370; --line:#e4e7ec;
  --accent:#2f5bea; --card:#f7f8fa;
}
@media (prefers-color-scheme: dark){
  :root{--bg:#101216;--fg:#e8eaed;--muted:#9aa2ae;--line:#262a31;--accent:#7f9bff;--card:#171a1f}
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}
header.site{border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;padding-block:18px}
.brand{font-weight:650;letter-spacing:-.01em;text-decoration:none;color:var(--fg)}
nav a{color:var(--muted);text-decoration:none;margin-left:18px;font-size:14px}
nav a:hover{color:var(--accent)}
main .wrap{padding-block:48px 64px}
h1{font-size:2rem;line-height:1.2;letter-spacing:-.02em;margin:0 0 .5em}
h2{font-size:1.15rem;margin:2.2em 0 .6em;letter-spacing:-.01em}
h3{font-size:1rem;margin:1.6em 0 .4em}
p,li{color:var(--fg)}
.lead{font-size:1.1rem;color:var(--muted);margin-bottom:2em}
.meta{font-size:.875rem;color:var(--muted)}
a{color:var(--accent)}
ul{padding-left:1.2em}
li{margin:.35em 0}
table{border-collapse:collapse;width:100%;font-size:.9rem;margin:1em 0}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-weight:600}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin:1.5em 0}
.card p:first-child{margin-top:0}.card p:last-child{margin-bottom:0}
footer.site{border-top:1px solid var(--line);margin-top:56px}
footer.site .wrap{padding-block:28px 48px;font-size:.85rem;color:var(--muted)}
footer.site a{color:var(--muted)}
.tablewrap{overflow-x:auto}