:root{--bg:#fafafa;--fg:#1d1d1f;--muted:#5f6368;--line:#e2e2e5;--accent:#2f6fed;color-scheme:light dark}
@media (prefers-color-scheme:dark){:root{--bg:#18181a;--fg:#e8e8ea;--muted:#a0a0a8;--line:#2e2e33;--accent:#7aa2ff}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif}
main{max-width:720px;margin:0 auto;padding:40px 16px 64px}
header{display:flex;gap:16px;align-items:baseline;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:12px;margin-bottom:24px}
header a.home{font-weight:650;color:var(--fg);text-decoration:none;font-size:18px}
nav a{margin-right:14px}
a{color:var(--accent)}
h1{font-size:28px;line-height:1.25;margin:0 0 4px}
h2{font-size:19px;margin:32px 0 8px}
.date{color:var(--muted);margin:0 0 24px}
footer{margin-top:48px;border-top:1px solid var(--line);padding-top:12px;color:var(--muted);font-size:14px}
li{margin:4px 0}