:root{--bg:#f6f6f3;--card:#fff;--fg:#1c1f1d;--muted:#5f6763;--line:#dfe2de;--accent:#2f6b4f;color-scheme:light}
@media (prefers-color-scheme:dark){:root{--bg:#121513;--card:#1b1f1d;--fg:#e8ece9;--muted:#9ba49f;--line:#2c3330;--accent:#6cc196;color-scheme:dark}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
.wrap{max-width:720px;margin:0 auto;padding:32px 20px 64px}
header{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:28px}
.brand{font-weight:700;font-size:1.25rem;color:var(--fg);text-decoration:none;letter-spacing:.01em}
nav a{color:var(--muted);text-decoration:none;margin-left:16px;font-size:.95rem}
nav a:hover,nav a[aria-current]{color:var(--accent)}
h1{font-size:2rem;line-height:1.2;margin:0 0 8px}
h2{font-size:1.2rem;margin:32px 0 8px}
p,li{color:var(--fg)}
.lede{font-size:1.15rem;color:var(--muted);margin:0 0 24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin:16px 0}
.muted{color:var(--muted);font-size:.95rem}
a{color:var(--accent)}
ul{padding-left:1.2em}
footer{margin-top:48px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem}
details{border-bottom:1px solid var(--line);padding:12px 0}
summary{cursor:pointer;font-weight:600}