:root { --fg:#1d1d1f; --muted:#5b5b66; --bg:#ffffff; --card:#f5f5f7; --line:#e3e3e8; --accent:#6139f6; color-scheme: light dark; }
@media (prefers-color-scheme: dark) { :root { --fg:#f2f2f5; --muted:#a6a6b2; --bg:#111114; --card:#1b1b20; --line:#2b2b33; --accent:#9c85ff; } }
* { box-sizing: border-box; }
body { margin:0; font-family: system-ui,-apple-system,"Segoe UI",Roboto,sans-serif; color:var(--fg); background:var(--bg); line-height:1.65; }
main { max-width: 780px; margin: 0 auto; padding: 48px 20px 80px; }
header.top { display:flex; justify-content:space-between; align-items:center; max-width:780px; margin:0 auto; padding:20px; }
header.top a.logo { font-weight:800; font-size:1.15rem; color:var(--fg); text-decoration:none; letter-spacing:-.02em; }
header.top nav a { color:var(--muted); text-decoration:none; margin-left:18px; font-size:.95rem; }
h1 { font-size: 2rem; line-height:1.2; letter-spacing:-.02em; margin: .2em 0 .3em; }
h2 { font-size: 1.2rem; margin-top: 2.2em; padding-top: .4em; border-top: 1px solid var(--line); }
p.meta { color: var(--muted); margin-top:0; }
a { color: var(--accent); }
ul { padding-left: 1.2em; }
li { margin: .25em 0; }
.card { background: var(--card); border:1px solid var(--line); border-radius: 14px; padding: 18px 20px; margin: 18px 0; }
footer { color: var(--muted); font-size: .9rem; border-top: 1px solid var(--line); margin-top: 48px; padding-top: 18px; }
.grid { display:grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: 14px; margin-top: 24px; }
.grid a.card { text-decoration:none; color:var(--fg); display:block; margin:0; }
.grid a.card strong { display:block; margin-bottom:4px; }
.grid a.card span { color: var(--muted); font-size:.95rem; }