:root { --bg:#fafaf8; --fg:#1d1d1b; --muted:#6b6b66; --line:#e3e3de; --card:#fff; --accent:#1f4e79; }
@media (prefers-color-scheme: dark) {
  :root { --bg:#151514; --fg:#ededea; --muted:#a3a39d; --line:#2e2e2b; --card:#1e1e1c; --accent:#8fb8e0; }
}
* { 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; }
.wrap { max-width:760px; margin:0 auto; padding:0 16px; }
a { color:var(--accent); }
header { border-bottom:1px solid var(--line); }
.nav { display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:8px; padding-top:14px; padding-bottom:14px; }
.brand { font-weight:700; color:var(--fg); text-decoration:none; }
nav a { margin-left:16px; text-decoration:none; }
nav a:first-child { margin-left:0; }
.hero { padding:48px 0 16px; }
h1 { font-size:2rem; line-height:1.2; margin:32px 0 8px; }
.hero h1 { margin-top:0; }
h2 { margin-top:40px; font-size:1.3rem; }
.card { background:var(--card); border:1px solid var(--line); border-radius:10px; padding:4px 20px; }
.muted { color:var(--muted); font-size:.93rem; }
li { margin-bottom:6px; }
footer { border-top:1px solid var(--line); margin-top:56px; padding:20px 0; color:var(--muted); font-size:.9rem; }