:root{
  --bg:#ffffff;--surface:#f4f7ff;--ink:#0b1220;--muted:#5a647c;--border:#e6ebf7;--accent:#2563eb;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;--maxw:760px;
}
@media(prefers-color-scheme:dark){:root{--bg:#070d1c;--surface:#101a30;--ink:#e6e9ee;--muted:#8b95a8;--border:#1e2b48;--accent:#60a5fa;}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.65}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
nav.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:10px;padding:12px 24px;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;letter-spacing:-.02em;color:var(--ink)}
.brand .mk{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:linear-gradient(150deg,#3b82f6,#1d4ed8);color:#fff;font-weight:800}
.spacer{flex:1}
nav.top a.lnk{color:var(--muted);font-size:14.5px;font-weight:500}nav.top a.lnk:hover{color:var(--ink);text-decoration:none}
main{max-width:var(--maxw);margin:0 auto;padding:44px 24px 100px}
h1{font-size:32px;letter-spacing:-.03em;margin:0 0 6px}
.updated{color:var(--muted);font-size:14px;margin:0 0 10px}
.note{border:1px solid var(--border);border-left:3px solid var(--accent);background:color-mix(in srgb,var(--accent) 8%,transparent);border-radius:8px;padding:12px 15px;margin:18px 0;font-size:14px}
h2{font-size:20px;letter-spacing:-.02em;margin:34px 0 10px}
h3{font-size:15px;margin:20px 0 6px}
p,li{font-size:15.5px;color:var(--ink)}
.muted,footer{color:var(--muted)}
ul{padding-left:22px}li{margin:5px 0}
table{border-collapse:collapse;width:100%;font-size:14px;margin:14px 0}
th,td{text-align:left;padding:8px 12px;border:1px solid var(--border);vertical-align:top}
th{background:var(--surface);font-weight:600}
footer{max-width:var(--maxw);margin:40px auto 0;padding:20px 24px;border-top:1px solid var(--border);font-size:13px}