:root{--bg:#f5f5f7;--text:#1d1d1f;--muted:#6e6e73;--line:#e5e5ea;--accent:#0071e3;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI Variable Text","Segoe UI",system-ui,sans-serif;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
*{box-sizing:border-box}
body{margin:0;padding:40px 16px 64px;background:var(--bg)}
main{max-width:720px;margin:0 auto;background:#fff;border-radius:20px;padding:40px 44px}
nav{max-width:720px;margin:0 auto 18px;display:flex;gap:18px;flex-wrap:wrap;font-size:14px}
nav a{color:var(--accent);text-decoration:none}nav a:hover{text-decoration:underline}
nav .brand{font-weight:650;color:var(--text);margin-right:auto}
h1{font-size:32px;letter-spacing:-.02em;margin:0 0 6px}
.updated{color:var(--muted);font-size:14px;margin:0 0 28px}
h2{font-size:19px;margin:32px 0 8px;letter-spacing:-.01em}
p,li{font-size:15px;line-height:1.65}
ul{padding-left:22px}
table{width:100%;border-collapse:collapse;font-size:14px;margin:8px 0}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-weight:600}
a{color:var(--accent)}
footer{max-width:720px;margin:18px auto 0;color:var(--muted);font-size:13px}
@media(max-width:600px){main{padding:26px 20px}h1{font-size:26px}}