:root{--bg:#fff;--bg-soft:#f6f7f9;--fg:#16181d;--fg-muted:#5b6169;--border:#e4e7ec;--accent:#2f6bff}
@media(prefers-color-scheme:dark){:root{--bg:#0e1014;--bg-soft:#161920;--fg:#f2f4f7;--fg-muted:#9aa2ad;--border:#262b34;--accent:#5b8cff}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}
.wrap{max-width:760px;margin:0 auto;padding:0 24px}
header{border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:62px}
.logo{font-weight:700;font-size:18px;text-decoration:none;color:inherit}.logo span{color:var(--accent)}
.nav a.back{color:var(--fg-muted);text-decoration:none;font-size:15px}
main{padding:56px 0 80px}
h1{font-size:34px;letter-spacing:-.03em;margin:0 0 6px}
.updated{color:var(--fg-muted);font-size:14px;margin:0 0 40px}
h2{font-size:19px;margin:36px 0 10px;letter-spacing:-.01em}
p,li{color:var(--fg-muted)}p{margin:0 0 14px}ul{margin:0 0 14px;padding-left:22px}li{margin:6px 0}
a{color:var(--accent)}
footer{border-top:1px solid var(--border);padding:28px 0;color:var(--fg-muted);font-size:14px}