:root{--bg:#f8f5ef;--paper:#fffefa;--ink:#333f39;--muted:#6d756e;--green:#496b58;--line:#e3e4da}
@media(prefers-color-scheme:dark){:root{--bg:#1d211f;--paper:#262b28;--ink:#e9ece6;--muted:#a9b0a8;--green:#9cc2a9;--line:#3a413c}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 system-ui,-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif}
main{max-width:720px;margin:0 auto;padding:32px 16px 64px}
header{display:flex;align-items:center;gap:14px;margin-bottom:20px}
header img{width:64px;height:64px;border-radius:15px}
h1{font-size:26px;margin:0}h2{font-size:19px;margin:32px 0 6px}
.muted{color:var(--muted);font-size:14px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:18px 20px;margin:16px 0}
a{color:var(--green)}
nav{display:flex;gap:16px;flex-wrap:wrap;font-size:14px;margin-top:40px;border-top:1px solid var(--line);padding-top:16px}
ul{padding-left:1.2em}