:root{--bg:#fff;--fg:#1f2328;--mute:#656d76;--line:#d0d7de;--side:#f6f8fa;--link:#0b5cad}
@media (prefers-color-scheme:dark){:root{--bg:#0d1117;--fg:#e6edf3;--mute:#8d96a0;--line:#30363d;--side:#161b22;--link:#4493f8}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.6 -apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
.wrap{display:flex;min-height:100vh}
nav{width:200px;flex:none;background:var(--side);border-right:1px solid var(--line);padding:20px 16px}
nav b{display:block;margin-bottom:12px}
nav a{display:block;padding:3px 0;color:var(--link);text-decoration:none}
main{flex:1;max-width:760px;padding:24px 32px 64px}
h1{font-size:24px;border-bottom:1px solid var(--line);padding-bottom:8px}
h2{font-size:18px;margin-top:28px}
a{color:var(--link)}
table{border-collapse:collapse;width:100%;margin:12px 0}
th,td{border:1px solid var(--line);padding:6px 10px;text-align:left}
th{background:var(--side)}
.upd{color:var(--mute);font-size:13px;margin-top:40px}
@media (max-width:640px){.wrap{display:block}nav{width:auto;border-right:0;border-bottom:1px solid var(--line)}main{padding:16px}}