:root{
  --bg:#f6f5f1; --fg:#1d1f21; --muted:#5f6368; --line:#dcd9d0; --accent:#2f5d50; --card:#ffffff;
}
@media (prefers-color-scheme: dark){
  :root{ --bg:#14161a; --fg:#e7e5e0; --muted:#9aa0a6; --line:#2b2f36; --accent:#7fb8a6; --card:#1b1e23; }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);
  font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;}
.wrap{max-width:720px;margin:0 auto;padding:56px 20px 40px;min-height:100vh;display:flex;flex-direction:column}
header{margin-bottom:40px}
.brand{font-weight:700;font-size:1.05rem;letter-spacing:.02em;color:var(--fg);text-decoration:none}
.brand span{color:var(--accent)}
h1{font-size:clamp(1.7rem,4vw,2.2rem);line-height:1.2;margin:0 0 16px;font-weight:700}
h2{font-size:1.1rem;margin:32px 0 8px}
p,li{color:var(--fg)}
.lead{font-size:1.1rem;color:var(--muted);margin:0 0 32px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:20px 22px;margin:0 0 16px}
.card h2{margin-top:0}
dl{display:grid;grid-template-columns:max-content 1fr;gap:6px 18px;margin:0}
dt{color:var(--muted)}
dd{margin:0;overflow-wrap:anywhere}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}
a{color:var(--accent)}
main{flex:1}
footer{margin-top:48px;padding-top:16px;border-top:1px solid var(--line);font-size:.9rem;color:var(--muted);
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}
footer nav{display:flex;gap:16px}
footer a{color:var(--muted)}
.small{font-size:.9rem;color:var(--muted)}
@media (max-width:480px){ .wrap{padding-top:36px} dl{grid-template-columns:1fr} dt{margin-top:6px} }