:root{--bg:#f2f5fa;--panel:#fff;--soft:#F4F6F8;--ink:#16232E;--ink2:#55646F;--line:#D9DFE4;--accent:#111111;--accent-ink:#fff;color-scheme:light}
@media all{:root:not([data-theme=light]){--bg:#000;--panel:#0A0A0A;--soft:#141414;--ink:#ECECEC;--ink2:#9A9A9A;--line:#222;--accent:#F2F2F2;--accent-ink:#0A0A0A;color-scheme:dark}}
*,*::before,*::after{box-sizing:border-box;border-radius:0!important}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.7}
html[lang=ar] body,html[lang=ar] button{font-family:'Noto Sans Arabic',Arial,Helvetica,sans-serif}
a{color:var(--ink);text-underline-offset:3px}
.lg-top{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.lg-wrap{max-width:1100px;margin:0 auto;padding:0 20px}
.lg-bar{display:flex;align-items:center;gap:20px;height:64px}
.lg-brand{display:inline-flex;align-items:baseline;text-decoration:none;color:var(--ink);font:400 24px/1 "JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;letter-spacing:-.03em;direction:ltr}
.lg-brand b{font-weight:400}.lg-brand u{display:inline-block;width:.6em;height:.13em;background:var(--ink);margin-inline-start:.08em}
.lg-nav{display:flex;gap:4px;margin-inline-start:auto;flex-wrap:wrap}
.lg-nav a{padding:8px 12px;text-decoration:none;color:var(--ink2);font-size:14.5px}
.lg-nav a[aria-current=page]{color:var(--ink);box-shadow:inset 0 -2px 0 var(--ink)}
.lg-body{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;padding:40px 20px 80px;max-width:1100px;margin:0 auto}
.lg-toc{position:sticky;top:96px;align-self:start;font-size:14px}
.lg-toc b{display:block;font-size:12.5px;color:var(--ink2);margin:0 0 8px}
.lg-toc ol{list-style:none;margin:0;padding:0;border-inline-start:1px solid var(--line)}
.lg-toc a{display:block;padding:5px 12px;color:var(--ink2);text-decoration:none;line-height:1.4}
.lg-toc a:hover{color:var(--ink)}
main{min-width:0;max-width:72ch}
main h1{font-size:clamp(32px,5vw,48px);line-height:1.08;letter-spacing:-.03em;margin:0 0 8px}
main .upd{color:var(--ink2);margin:0 0 28px;font-size:14.5px}
main .lead{font-size:18px;margin:0 0 28px}
main h2{font-size:20px;line-height:1.3;margin:40px 0 10px;padding-top:18px;border-top:1px solid var(--line)}
main h3{font-size:16px;margin:20px 0 6px}
main p,main li{color:var(--ink)}main ul,main ol{padding-inline-start:22px}main li{margin:4px 0}
main table{width:100%;border-collapse:collapse;margin:12px 0;font-size:14.5px}main th,main td{text-align:start;padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}main th{color:var(--ink2);font-weight:600}
.note{background:var(--soft);border-inline-start:3px solid var(--ink2);padding:12px 14px;font-size:14.5px;margin:20px 0}
.lg-ft{border-top:1px solid var(--line);padding:24px 0;color:var(--ink2);font-size:14px}
.lg-ft .lg-wrap{display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}
@media(max-width:860px){.lg-body{grid-template-columns:minmax(0,1fr)!important;gap:20px;padding-top:24px}.lg-toc{position:static;border:1px solid var(--line);padding:12px;background:var(--panel);max-height:260px!important;overflow:auto}}
@media(max-width:560px){.lg-bar{height:auto;padding:12px 20px;flex-wrap:wrap;gap:8px}.lg-nav{margin-inline-start:0;width:100%}.lg-nav a{padding:6px 10px 6px 0}body{font-size:15.5px}}