/* © 2026 Сергеев Антон Валентинович. Все права защищены. */
:root{--ink:#172a45;--ink2:#53677e;--line:#dbe3ed;--accent:#041f56;--cyan:#66d8f5;--soft:#eaf0f7;--bg:#f7f9fc;--card:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;font:17px/1.65 "Inter","Segoe UI","Roboto","DejaVu Sans",Arial,sans-serif;color:var(--ink);background:var(--bg)}
.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:14px;padding:10px 24px;background:#fff;border-bottom:1px solid var(--line);min-height:64px}
.top .ttl{flex:1;font-size:18px}.back{color:var(--accent);text-decoration:none;font-weight:600;min-height:44px;display:inline-flex;align-items:center}
#q{min-height:44px;padding:0 14px;border:1px solid #b9c7d8;border-radius:12px;font:inherit;width:260px;max-width:40vw}
#menuBtn{display:none;min-height:44px;padding:0 16px;border:1px solid var(--line);border-radius:12px;background:var(--soft);color:var(--accent);font:inherit;cursor:pointer}
.layout{display:grid;grid-template-columns:330px minmax(0,1fr);gap:0;max-width:1500px;margin:0 auto}
#toc{position:sticky;top:64px;align-self:start;max-height:calc(100vh - 64px);overflow:auto;padding:18px 16px 40px;font-size:15px;line-height:1.35}
#toc ul{list-style:none;margin:0;padding:0}#toc li{margin:0}#toc a{display:block;padding:7px 10px;border-radius:8px;color:var(--ink);text-decoration:none}
#toc a:hover{background:var(--soft)}#toc a.cur{background:var(--accent);color:#fff}#toc .l1{margin-top:12px;font-weight:650}#toc .l2{padding-left:12px}#toc .l3{padding-left:24px;font-size:14px;color:var(--ink2)}
#toc .num{color:var(--ink2);margin-right:4px}#toc a.cur .num{color:#cfe}.tochint{color:var(--ink2);font-size:14px;margin:0 8px 6px}
main{padding:28px 40px 80px;max-width:980px;min-width:0}main:focus{outline:none}
h1{font-size:clamp(28px,3.2vw,40px);line-height:1.2;margin:0 0 20px;letter-spacing:-.5px}
h2{font-size:28px;margin:64px 0 14px;padding-top:24px;border-top:3px solid var(--accent);line-height:1.25}
h3{font-size:22px;margin:40px 0 10px;line-height:1.3}h4{font-size:18px;margin:28px 0 8px}
.num{color:var(--ink2);font-weight:500;margin-right:4px}.anchor{color:#b9c7d8;text-decoration:none;margin-right:6px;font-weight:400}h2:hover .anchor,h3:hover .anchor,h4:hover .anchor{color:var(--accent)}
p{margin:0 0 14px}ul,ol{margin:0 0 16px;padding-left:26px}li{margin:6px 0}
code{background:var(--soft);padding:1px 6px;border-radius:6px;font-size:.92em}
figure{margin:22px 0;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px}
figure img{display:block;width:100%;height:auto;border-radius:8px;border:1px solid var(--line)}figcaption{margin-top:10px;color:var(--ink2);font-size:15px}
.pins{list-style:none;padding:0;margin:-6px 0 22px}.pins li{display:flex;gap:10px;align-items:flex-start}
.pin{flex:none;display:inline-grid;place-items:center;min-width:26px;height:26px;border-radius:50%;background:#d6203a;color:#fff;font-weight:700;font-size:14px;margin-top:1px}
.co{margin:18px 0;padding:14px 16px;border-radius:12px;border-left:6px solid;background:#fff}
.co.tip{border-color:#1c9a5a;background:#effaf4}.co.warn{border-color:#d98a00;background:#fff6e5}.co.key{border-color:#d6203a;background:#fff0f2}.co.ex{border-color:#3563b8;background:#eef3fc}.co.if{border-color:#6b4fb8;background:#f4f0fc}
.tablewrap{overflow:auto;margin:16px 0}table{border-collapse:collapse;width:100%;background:#fff;font-size:15px}th,td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}th{background:var(--soft)}
.end{margin-top:60px;padding-top:20px;border-top:1px solid var(--line);color:var(--ink2);font-size:15px}
mark{background:#fff2a8;padding:0 2px}.hide{display:none!important}
:focus-visible{outline:3px solid #08607b;outline-offset:2px}
@media(max-width:980px){.layout{display:block}#menuBtn{display:inline-block}.top{padding:8px 12px;gap:8px}.top .ttl{display:none}#q{flex:1;width:auto;max-width:none;min-width:0}.back{white-space:nowrap}main{overflow-wrap:anywhere}
#toc{display:none;position:fixed;top:64px;left:0;right:0;bottom:0;max-height:none;background:#fff;z-index:15;padding:16px 20px 60px}#toc.open{display:block}
main{padding:20px 16px 60px}body{font-size:16px}h2{font-size:24px}h3{font-size:20px}}
@media print{.top,#toc{display:none}.layout{display:block}main{max-width:none;padding:0}figure{break-inside:avoid}h2{break-before:page}}