:root{--ink:#16181d;--muted:#5d6370;--line:#e4e2dc;--bg:#fbfaf7;--accent:#1f3a5f;--card:#fff}
@media (prefers-color-scheme:dark){:root{--ink:#ecebe7;--muted:#a3a7b0;--line:#2c2f36;--bg:#121418;--accent:#8fb4e3;--card:#1a1d22}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,sans-serif}
a{color:var(--accent)}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}
header.top{border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;justify-content:space-between;align-items:center;height:64px}
.brand{font:600 22px/1 Georgia,"Times New Roman",serif;letter-spacing:.5px;color:var(--ink);text-decoration:none}
nav a{color:var(--muted);text-decoration:none;margin-left:18px;font-size:14px}nav a:hover{color:var(--ink)}
.hero{padding:72px 0 40px}
.hero h1{font:600 40px/1.15 Georgia,"Times New Roman",serif;margin:0 0 16px;letter-spacing:-.3px}
.lede{font-size:19px;color:var(--muted);margin:0}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:14px;margin:36px 0}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:18px}
.card h3{margin:0 0 6px;font-size:16px}.card p{margin:0;color:var(--muted);font-size:14.5px}
h2{font:600 24px/1.3 Georgia,"Times New Roman",serif;margin:44px 0 10px}
.doc h2{font-size:20px;margin:32px 0 6px}.doc h3{font-size:16px;margin:20px 0 4px}
.doc p,.doc li{color:var(--ink)}.doc .meta{color:var(--muted);font-size:14px}
.note{border-left:3px solid var(--accent);padding:4px 0 4px 14px;color:var(--muted)}
footer{border-top:1px solid var(--line);margin-top:64px;padding:24px 0 40px;color:var(--muted);font-size:13.5px}
footer a{color:var(--muted)}
@media (max-width:560px){.hero h1{font-size:31px}.hero{padding:48px 0 28px}nav a{margin-left:12px}}