:root{color-scheme:dark light;--bg:#0b0f1a;--fg:#e6e9f2;--mute:#9aa3ba;--line:#1f2740;--accent:#7cc4ff;--card:#121828}
@media (prefers-color-scheme:light){:root{--bg:#f6f7fb;--fg:#12172a;--mute:#4b5570;--line:#d9ddea;--accent:#0b63b8;--card:#fff}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
.wrap{max-width:40rem;margin:0 auto;padding:2rem 1.25rem 4rem}
header.top{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;flex-wrap:wrap;margin-bottom:3rem}
header.top a.brand{color:var(--fg);font-weight:600;text-decoration:none;letter-spacing:.02em}
nav a{margin-left:1.1rem;color:var(--mute);text-decoration:none}
nav a:hover,nav a[aria-current]{color:var(--accent)}
h1{font-size:2.4rem;line-height:1.15;margin:0 0 .75rem;letter-spacing:-.01em}
h2{font-size:1.2rem;margin:2.25rem 0 .5rem}
p,li{color:var(--fg)}
.lede{font-size:1.2rem;color:var(--mute);margin-bottom:2rem}
a{color:var(--accent)}
.card{background:var(--card);border:1px solid var(--line);border-radius:.75rem;padding:1.1rem 1.25rem;margin:1.5rem 0}
ul{padding-left:1.25rem}
footer{margin-top:4rem;padding-top:1.25rem;border-top:1px solid var(--line);color:var(--mute);font-size:.9rem}
footer a{color:var(--mute)}