:root{--bg:#F7F6F2;--ink:#23252E;--muted:#6C7080;--line:#E5E4DE;--accent:#5457C9;--card:#FFF}
@media (prefers-color-scheme:dark){:root{--bg:#131419;--ink:#ECEDF2;--muted:#9AA0AF;--line:#2C2E3A;--accent:#8B8DF0;--card:#1C1E27}}
*{box-sizing:border-box;margin:0}
body{background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;line-height:1.65;padding:0 20px 64px}
.wrap{max-width:720px;margin:0 auto}
header{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:22px 0 18px;border-bottom:1px solid var(--line);margin-bottom:30px}
.brand{font-weight:800;font-size:17px;letter-spacing:-.01em;text-decoration:none;color:var(--ink)}
nav a{color:var(--muted);text-decoration:none;font-size:14px;font-weight:600;margin-left:18px}
nav a:hover,nav a[aria-current]{color:var(--accent)}
h1{font-size:30px;font-weight:800;letter-spacing:-.02em;margin-bottom:6px;text-wrap:balance}
.updated{color:var(--muted);font-size:13.5px;margin-bottom:26px}
h2{font-size:19px;font-weight:750;margin:30px 0 8px}
h3{font-size:15.5px;font-weight:700;margin:20px 0 6px}
p,li{font-size:15.5px}
ul{padding-left:22px;display:flex;flex-direction:column;gap:5px;margin:8px 0}
a{color:var(--accent)}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin:22px 0}
.card p:first-child{margin-top:0}
footer{margin-top:44px;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:13.5px}