:root{--bg:#fbfaf7;--fg:#1d1f24;--muted:#5f636b;--line:#e6e2da;--accent:#b8801c}
@media (prefers-color-scheme:dark){:root{--bg:#16181d;--fg:#ecebe7;--muted:#a3a6ad;--line:#2b2e35;--accent:#f5b542}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB",sans-serif}
main{max-width:680px;margin:0 auto;padding:48px 16px 64px}
header{display:flex;align-items:center;gap:14px;margin-bottom:28px}
header img{width:56px;height:56px;border-radius:50%}
h1{font-size:26px;margin:0;line-height:1.3}
h2{font-size:18px;margin:32px 0 8px}
p,li{color:var(--fg)}
.sub{color:var(--muted);margin:2px 0 0;font-size:14px}
a{color:var(--accent)}
footer{margin-top:48px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}