:root{--bg:#f6f7f9;--card:#ffffff;--text:#1b1f24;--muted:#5b6470;--line:#e3e6ea;--green:#00a862;--todo-bg:#fff3cd;--todo-text:#7a5a00}
@media (prefers-color-scheme:dark){:root{--bg:#0d1117;--card:#151b23;--text:#e6edf3;--muted:#9aa5b1;--line:#262f3a;--green:#00e080;--todo-bg:#3a2f0b;--todo-text:#ffd66b}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:var(--green)}
header{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:2}
.bar{max-width:860px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.brand{font-weight:800;font-size:18px;text-decoration:none;color:var(--text);display:flex;align-items:center;gap:6px}
.brand span{color:var(--green)}
nav{display:flex;gap:6px;flex-wrap:wrap}
nav a{font-size:13px;text-decoration:none;color:var(--muted);padding:6px 10px;border-radius:8px;border:1px solid var(--line)}
nav a[aria-current=page]{color:var(--green);border-color:var(--green);font-weight:600}
main{max-width:860px;margin:0 auto;padding:24px 16px 48px}
.doc{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:28px 24px}
h1{font-size:28px;line-height:1.25;margin:0 0 6px}
.updated{color:var(--muted);font-size:14px;margin:0 0 22px}
h2{font-size:19px;margin:30px 0 8px;padding-top:6px;border-top:1px solid var(--line)}
h2:first-of-type{border-top:0;padding-top:0}
h3{font-size:16px;margin:18px 0 6px}
p,li{color:var(--text)}
ul,ol{padding-left:22px}
li{margin:4px 0}
.box{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:14px 16px;margin:14px 0}
.box p{margin:4px 0}
table{width:100%;border-collapse:collapse;font-size:14px;margin:10px 0}
th,td{text-align:left;padding:8px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-weight:600}
.table-wrap{overflow-x:auto}
mark.todo{background:var(--todo-bg);color:var(--todo-text);padding:1px 5px;border-radius:4px;font-weight:600}
.toc{columns:2;column-gap:28px;font-size:14px;margin:0 0 10px;padding-left:18px}
footer{max-width:860px;margin:0 auto;padding:0 16px 32px;color:var(--muted);font-size:13px;text-align:center}
@media (max-width:620px){h1{font-size:23px}.doc{padding:20px 16px}.toc{columns:1}}
@media print{header,footer,nav{display:none}body{background:#fff;color:#000}.doc{border:0;padding:0}}