:root{--bg:#f7f8f6;--ink:#0b2e36;--muted:#4f666c;--line:#d7e0dd;--accent:#0f4c5c;--card:#fff}
@media (prefers-color-scheme:dark){:root{--bg:#0b1d22;--ink:#e7f0ee;--muted:#a3b8b6;--line:#26424a;--accent:#8fd3c8;--card:#10272d}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
main,header.top,footer{max-width:760px;margin:0 auto;padding:0 18px}
header.top{padding-top:24px;display:flex;gap:12px;justify-content:space-between;flex-wrap:wrap}
header.top a{color:var(--muted);font-size:.9rem}
h1{font-size:clamp(1.7rem,6vw,2.3rem);line-height:1.15;margin:28px 0 8px;text-wrap:balance}
h2{font-size:1.12rem;margin:30px 0 6px}
p,li{overflow-wrap:anywhere}ul{padding-left:20px}
a{color:var(--accent)}.meta{color:var(--muted);font-size:.92rem}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:10px 0;text-decoration:none;color:inherit}
.card b{color:var(--accent)}.card span{display:block;color:var(--muted);font-size:.93rem}
.box{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:14px 0}
table{border-collapse:collapse;width:100%;font-size:.93rem;margin:10px 0}th,td{border:1px solid var(--line);padding:8px;text-align:left;vertical-align:top}
pre{white-space:pre-wrap;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;font:inherit}
footer{padding-top:28px;padding-bottom:36px;color:var(--muted);font-size:.88rem}