:root{--bg:#fff8ec;--fg:#3b2214;--muted:#7a5a46;--card:#ffffff;--line:#ecd9c2;--accent:#e8890c}
@media (prefers-color-scheme:dark){:root{--bg:#1d0e07;--fg:#f6e9dc;--muted:#c9ab93;--card:#2a160c;--line:#4a2c1b;--accent:#ffb347}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
main{max-width:720px;margin:0 auto;padding:40px 16px 64px}h1{font-size:30px;line-height:1.2;margin:0 0 6px}h2{font-size:19px;margin:28px 0 6px}
.sub{color:var(--muted);margin:0 0 24px}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin:16px 0}
a{color:var(--accent)}ul{padding-left:20px}nav{display:flex;gap:16px;margin-bottom:28px;font-weight:600}footer{margin-top:40px;color:var(--muted);font-size:14px}