:root{--bg:#fbfaf7;--fg:#1d1f24;--muted:#5d6370;--line:#e4e1da;--accent:#2f6f5e}
@media (prefers-color-scheme:dark){:root{--bg:#15171b;--fg:#ecebe7;--muted:#a2a7b1;--line:#2b2f36;--accent:#7cc4ad}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
.wrap{max-width:760px;margin:0 auto;padding:48px 20px 64px}
header{display:flex;justify-content:space-between;align-items:center;margin-bottom:48px}
.brand{font-weight:700;font-size:20px;letter-spacing:-.01em;color:var(--fg);text-decoration:none}
nav a{color:var(--muted);text-decoration:none;margin-left:20px;font-size:14px}
nav a:hover{color:var(--fg)}
h1{font-size:36px;line-height:1.2;letter-spacing:-.02em;margin:0 0 16px}
h2{font-size:20px;margin:40px 0 8px}
p,li{color:var(--fg)}
.lead{font-size:19px;color:var(--muted);margin:0 0 32px}
.muted{color:var(--muted);font-size:14px}
ul{padding-left:20px}
a{color:var(--accent)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin:32px 0}
.card{border:1px solid var(--line);border-radius:10px;padding:16px}
.card b{display:block;margin-bottom:4px}
footer{border-top:1px solid var(--line);margin-top:56px;padding-top:20px;font-size:14px;color:var(--muted)}
footer a{color:var(--muted);margin-right:16px}