:root{--bg:#f6f7f9;--card:#ffffff;--text:#14181d;--soft:#3b434d;--muted:#66707b;--line:#e3e6ea;--accent:#4a8f00;
--chip:#eef1f4;--band:#000000;color-scheme:light}
@media (prefers-color-scheme:dark){:root{--bg:#0e1116;--card:#151a21;--text:#eef1f4;--soft:#c9d0d8;--muted:#8d96a1;
--line:#252c35;--accent:#a6f11d;--chip:#1d242d;color-scheme:dark}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans",
"Noto Sans Arabic","Noto Sans Devanagari",Arial,sans-serif}
header.band{background:var(--band);padding:14px 16px}
header.band .in{max-width:780px;margin:0 auto;display:flex;align-items:center;gap:16px;justify-content:space-between}
header.band img{height:56px;width:auto;display:block}
.langs{display:flex;align-items:center;gap:8px;color:#cfd6dd;font-size:14px}
.langs select{font:inherit;color:#fff;background:#1a1f26;border:1px solid #333b45;border-radius:8px;padding:6px 10px;max-width:58vw}
.langs noscript a{color:#a6f11d;margin:0 4px}
main{max-width:780px;margin:0 auto;padding:8px 16px 40px}
article{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:8px 28px 28px;margin:20px 0}
.js article{display:none}.js article.on{display:block}
h1{font-size:30px;line-height:1.2;margin:22px 0 10px}
h2{font-size:21px;line-height:1.3;margin:34px 0 8px;padding-top:18px;border-top:1px solid var(--line);scroll-margin-top:16px}
h3{font-size:17px;margin:22px 0 4px}
p,li{color:var(--soft)}
b{color:var(--text)}
b.ui{background:var(--chip);border-radius:6px;padding:1px 6px;font-weight:600;white-space:nowrap}
.meta{color:var(--muted);font-size:15px}
a{color:var(--accent);text-underline-offset:2px}
ul,ol{padding-inline-start:22px}
li{margin:6px 0}
nav.toc{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 6px}
nav.toc a{background:var(--chip);color:var(--text);text-decoration:none;border-radius:999px;padding:5px 12px;font-size:14px}
nav.toc a:hover{color:var(--accent)}
:target{outline:none}
h2:target{color:var(--accent)}
footer{max-width:780px;margin:0 auto;padding:0 16px 32px;color:var(--muted);font-size:13px}
[dir=rtl] b.ui{white-space:normal}
@media (max-width:600px){article{padding:4px 18px 22px;border-radius:12px}h1{font-size:25px}h2{font-size:19px}
header.band img{height:44px}body{font-size:15.5px}}

.topnav{max-width:780px;margin:0 auto;padding:10px 16px 0;display:flex;flex-wrap:wrap;gap:6px 14px}
.topnav a{color:var(--muted);text-decoration:none;font-size:14px;padding:4px 0;border-bottom:2px solid transparent}
.topnav a.here{color:var(--text);border-bottom-color:var(--accent)}
.lead{font-size:18px;color:var(--text)}
.soon{display:inline-block;background:var(--chip);color:var(--text);border-radius:999px;padding:6px 14px;font-weight:600}
nav.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px;margin:22px 0}
nav.cards a.card{display:block;background:var(--chip);color:var(--text);text-decoration:none;border-radius:12px;padding:14px 16px;font-weight:600}
nav.cards a.card:hover{color:var(--accent)}