:root{--bg:#fbfaf7;--ink:#1d201f;--muted:#5b625f;--accent:#8A5A00;--line:#e4e1da;--card:#ffffff}
@media (prefers-color-scheme:dark){:root{--bg:#121413;--ink:#ecefed;--muted:#a3aaa6;--line:#2a2e2c;--card:#1a1d1c}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
main{max-width:720px;margin:0 auto;padding:48px 20px 80px}
h1{font-size:2rem;line-height:1.2;margin:0 0 .25em}
h2{font-size:1.15rem;margin:2em 0 .4em}
p,li{color:var(--ink)} .muted{color:var(--muted);font-size:.95rem}
a{color:var(--accent)}
nav{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:32px;font-size:.95rem}
.lang{display:flex;gap:12px;font-size:.9rem;margin:8px 0 24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 18px}