:root{color-scheme:dark;--bg:#101216;--card:#16191F;--line:#2A2F39;--text:#EDEFF2;--soft:#C9CED6;--muted:#8E96A3;--amber:#F2B705;--amber-ink:#F2B705}
:root[data-theme="light"]{color-scheme:light;--bg:#F6F7F9;--card:#FFFFFF;--line:#DADDE3;--text:#12151B;--soft:#3A414D;--muted:#646C7A;--amber-ink:#8A6400}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--text);font-family:"Archivo",system-ui,sans-serif;font-size:16.5px;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--amber-ink)}
.wrap{max-width:820px;margin:0 auto;padding:0 clamp(16px,4vw,40px)}
header{border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
header .mark img{height:30px;width:auto;display:block}
:root:not([data-theme="light"]) header .mark .l{display:none}
:root[data-theme="light"] header .mark .d{display:none}
header nav a{color:var(--muted);text-decoration:none;font-size:15px;margin-left:18px}
header nav a:hover,header nav a[aria-current]{color:var(--text)}
main{padding:56px 0 80px}
h1{font-size:clamp(32px,4.4vw,46px);line-height:1.1;letter-spacing:-.02em;font-weight:600}
.updated{color:var(--muted);margin-top:10px;font-size:15px}
.intro{color:var(--soft);font-size:18px;margin-top:22px}
h2{font-size:21px;font-weight:600;letter-spacing:-.01em;margin:40px 0 10px;padding-top:24px;border-top:1px solid var(--line)}
p,li{color:var(--soft)}
p + p{margin-top:12px}
ul{margin:10px 0 0 22px;display:grid;gap:6px}
strong{color:var(--text);font-weight:600}
.box{margin-top:28px;padding:18px 20px;border:1px solid var(--line);border-radius:14px;background:var(--card)}
.toc{margin-top:26px;columns:2;column-gap:28px;font-size:15px}
.toc a{color:var(--soft);text-decoration:none;display:block;padding:3px 0}
.toc a:hover{color:var(--amber-ink)}
footer{border-top:1px solid var(--line);padding:28px 0;color:var(--muted);font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between}
footer a{color:var(--muted)}
@media (max-width:560px){.toc{columns:1}header nav a{margin-left:12px}}
@media print{header,footer,.toc{display:none}body{background:#fff;color:#000}p,li{color:#000}}