:root{--bg:#fff;--fg:#1b1f24;--muted:#5b6470;--link:#0b5cad;--line:#e3e6ea}
@media (prefers-color-scheme:dark){:root{--bg:#121417;--fg:#e8eaed;--muted:#9aa3ad;--link:#7ab4ff;--line:#2a2f35}}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
header,main,footer{max-width:760px;margin:0 auto;padding:16px}
header{border-bottom:1px solid var(--line);font-weight:600}
footer{border-top:1px solid var(--line);color:var(--muted);font-size:14px}
a{color:var(--link);text-decoration:none}
header a{color:var(--fg)}
h1{font-size:1.6em;line-height:1.25}
.soon{color:var(--muted)}
.toc{padding-inline-start:20px}
.toc li{margin:6px 0}
img{max-width:100%;height:auto}