:root{color-scheme:light;--page:#f7f7f7;--surface:#fff;--ink:#242424;--muted:#686868;--border:#e3e3e3;--accent:#b84c56;--soft:#f7e9eb;--deep:#81303a}
*{box-sizing:border-box}html{scroll-behavior:auto}body{margin:0;background:var(--page);color:var(--ink);font:16px/1.7 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif}
a{color:var(--deep);text-underline-offset:4px}a:hover{color:#a9404b}a:focus-visible{outline:3px solid var(--accent);outline-offset:4px;border-radius:3px}
.skip{position:absolute;left:16px;top:-80px;padding:8px;background:var(--surface)}.skip:focus{top:8px}
header,main,footer{max-width:880px;margin:auto;padding:24px}header{display:flex;justify-content:space-between;align-items:center;gap:16px;border-bottom:1px solid var(--border)}
.brand{font-size:14px;font-weight:650;letter-spacing:.06em;color:var(--muted);text-decoration:none}nav{display:flex;gap:16px;flex-wrap:wrap;font-size:14px}nav [aria-current]{font-weight:700}
main{padding-top:32px}article{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:clamp(20px,5vw,48px);box-shadow:0 2px 12px #24242405}
.kicker{font-size:14px;color:var(--deep);font-weight:600;margin:0 0 8px}h1{font-size:clamp(28px,5vw,40px);line-height:1.2;font-weight:650;margin:0 0 16px}
h2{font-size:21px;line-height:1.4;margin:32px 0 12px;font-weight:600}p{margin:0 0 16px}.meta{font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums}
.notice{background:var(--soft);color:var(--deep);border-left:3px solid var(--accent);padding:16px;border-radius:0 8px 8px 0;margin:24px 0}
li{margin:8px 0}ul{padding-left:22px}code{font-size:.9em;overflow-wrap:anywhere;word-break:break-word}
footer{font-size:14px;color:var(--muted);padding-bottom:40px}footer p{margin:0}strong{font-weight:650} @media(max-width:400px){header,main,footer{padding:16px}header{align-items:flex-start}.brand{max-width:140px}nav{gap:10px}article{padding:20px}}