:root{--bg:#f7f8fa;--fg:#1f2328;--mut:#656d76;--line:#d8dee4;--acc:#0969da}
*{box-sizing:border-box}
body{margin:0;font:15px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--fg);background:var(--bg)}
header{border-bottom:1px solid var(--line);background:#fff}
nav{max-width:880px;margin:0 auto;padding:14px 24px;display:flex;gap:22px;align-items:center}
nav b{font-weight:600}
nav a{color:var(--mut);text-decoration:none;font-size:14px}
nav a:hover{color:var(--acc)}
main{max-width:880px;margin:0 auto;padding:40px 24px 80px}
h1{font-size:26px;margin:0 0 10px;font-weight:600}
h2{font-size:17px;margin:32px 0 10px;font-weight:600}
p{margin:0 0 14px;color:var(--mut)}
.card{background:#fff;border:1px solid var(--line);border-radius:8px;padding:18px 20px;margin:18px 0}
code{background:#eff1f3;border-radius:4px;padding:2px 6px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}
pre{background:#fff;border:1px solid var(--line);border-radius:8px;padding:14px 16px;overflow-x:auto;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}
table{border-collapse:collapse;width:100%;font-size:14px}
th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line)}
th{color:var(--mut);font-weight:500}
footer{border-top:1px solid var(--line);color:var(--mut);font-size:13px;padding:20px 24px;max-width:880px;margin:0 auto}
.ok{color:#1a7f37}