:root{--bg:#f7f8fa;--fg:#16202a;--muted:#5a6672;--accent:#0b6e99;--card:#fff;--line:#dfe3e8}
@media (prefers-color-scheme:dark){:root{--bg:#0e141a;--fg:#e6edf3;--muted:#9aa7b3;--accent:#59c3ef;--card:#151d25;--line:#26323d}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
header,main,footer{max-width:760px;margin:0 auto;padding:0 16px}
header{padding-top:28px;display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:8px}
header .brand{font-weight:700;letter-spacing:.04em;color:var(--fg);text-decoration:none}
nav a{margin-left:16px;color:var(--accent);text-decoration:none}
nav a:first-child{margin-left:0}
main{padding-top:12px;padding-bottom:32px}
h1{font-size:1.9rem;line-height:1.25;margin:.6em 0 .3em}
h2{font-size:1.2rem;margin:1.8em 0 .4em}
p,li{color:var(--fg)}
.lead{font-size:1.1rem;color:var(--muted)}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px 20px;margin:20px 0}
code{font-size:.92em;word-break:break-word}
a{color:var(--accent)}
table{border-collapse:collapse;width:100%;font-size:.95rem}
td,th{border-top:1px solid var(--line);padding:8px 6px;text-align:left;vertical-align:top}
footer{border-top:1px solid var(--line);padding-top:16px;padding-bottom:40px;color:var(--muted);font-size:.9rem}