:root{--bg:#f7f3ea;--card:#fffdf8;--text:#1f1d1a;--muted:#6b665d;--accent:#2f6f4f;--line:#e6dfd0}
@media (prefers-color-scheme:dark){:root{--bg:#14130f;--card:#1d1b17;--text:#efe9dc;--muted:#a9a196;--accent:#7cc39b;--line:#2c2924}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
main{max-width:720px;margin:0 auto;padding:40px 20px 64px}
header{display:flex;align-items:center;gap:14px;margin-bottom:28px}
.tile{width:48px;height:48px;border-radius:10px;background:#f3e6c8;color:#3a2a14;display:grid;place-items:center;font-weight:800;font-size:26px;box-shadow:0 2px 0 #c9b48a,0 4px 10px rgba(0,0,0,.12);position:relative}
.tile small{position:absolute;right:6px;bottom:3px;font-size:11px;font-weight:700}
h1{font-size:30px;margin:0}h2{font-size:20px;margin:32px 0 8px}h3{font-size:16px;margin:20px 0 4px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:4px 20px 16px;margin:16px 0}
p,li{color:var(--text)}.muted{color:var(--muted);font-size:14px}a{color:var(--accent)}
nav{display:flex;gap:16px;margin-bottom:8px;font-size:15px}hr{border:0;border-top:1px solid var(--line);margin:40px 0}