:root{--bg:#fbfaf7;--fg:#1c1b19;--muted:#6b675f;--line:#e4e0d6;--accent:#1f5f8b;--card:#fff}
@media (prefers-color-scheme:dark){:root{--bg:#161614;--fg:#ecebe6;--muted:#a19d93;--line:#2e2d29;--accent:#7fb6dd;--card:#1e1e1b}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,system-ui,sans-serif}
header{display:flex;justify-content:space-between;align-items:center;max-width:760px;margin:0 auto;padding:20px 16px;border-bottom:1px solid var(--line)}
.brand{font-weight:700;color:var(--fg);text-decoration:none;letter-spacing:-.01em}
nav a{margin-left:20px;color:var(--muted);text-decoration:none}
nav a[aria-current]{color:var(--fg);font-weight:600}
main{max-width:760px;margin:0 auto;padding:32px 16px 48px}
h1{font-size:2rem;letter-spacing:-.02em;margin:0 0 8px}
h2{font-size:1.2rem;margin:36px 0 10px}
h3{font-size:1rem;margin:20px 0 6px}
a{color:var(--accent)}
.muted{color:var(--muted)}
.lead{font-size:1.1rem;color:var(--muted)}
ul{padding-left:22px}
li{margin:4px 0}
code{font-size:.9em;background:var(--card);border:1px solid var(--line);border-radius:4px;padding:1px 5px}
.contact{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px 20px;margin:24px 0}
.contact p{margin:4px 0}
details{border-bottom:1px solid var(--line);padding:10px 0}
summary{cursor:pointer;font-weight:600}
details p{margin:8px 0 4px;color:var(--fg)}
footer{max-width:760px;margin:0 auto;padding:20px 16px 40px;color:var(--muted);border-top:1px solid var(--line);font-size:.9rem}