:root{--bg:#f6f4ef;--fg:#2b2a27;--muted:#7a766d;--accent:#2f6f5e;--card:#fffdf8}
@media (prefers-color-scheme:dark){:root{--bg:#1c1b19;--fg:#e8e4da;--muted:#9a958a;--accent:#7fc3ad;--card:#262421}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 Georgia,"Times New Roman",serif}
header{padding:28px 20px 10px;max-width:720px;margin:0 auto}header a{color:var(--fg);text-decoration:none;font-weight:bold;letter-spacing:.04em}
nav a{color:var(--muted);margin-right:16px;text-decoration:none;font-size:14px}nav a:hover{color:var(--accent)}
main{max-width:720px;margin:0 auto;padding:10px 20px 60px}h1{font-weight:normal;font-size:30px;margin:.4em 0}
h2{font-weight:normal;font-size:20px;margin:1.6em 0 .4em;color:var(--accent)}
.card{background:var(--card);border:1px solid rgba(0,0,0,.06);border-radius:8px;padding:16px 18px;margin:14px 0}
.meta{color:var(--muted);font-size:14px}footer{max-width:720px;margin:0 auto;padding:20px;color:var(--muted);font-size:13px;border-top:1px solid rgba(0,0,0,.08)}
code{font:14px/1.4 ui-monospace,Menlo,Consolas,monospace;background:rgba(0,0,0,.06);padding:1px 5px;border-radius:4px}