:root {
  color-scheme: light;
  --ink:#17212f; --muted:#5a6675; --bg:#f6f8fb; --panel:#fff; --soft:#eef4f8; --line:#d7e0ea;
  --brand:#155e9f; --brand-dark:#0e3f6b; --accent:#1e9b7b; --gold:#d89b2b; --danger:#b4442f;
  --code-bg:#111827; --code-ink:#e7eef8; --shadow:0 14px 36px rgba(23,33,47,.12);
}
*{box-sizing:border-box} html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI",Arial,"Noto Sans","Noto Sans CJK SC","Noto Sans Devanagari","Noto Sans Arabic",sans-serif;color:var(--ink);background:linear-gradient(135deg,rgba(21,94,159,.08),rgba(30,155,123,.07)),var(--bg);line-height:1.58}
:lang(ar),:lang(ur),:lang(fa){font-family:"Segoe UI","Tahoma","Noto Naskh Arabic","Noto Sans Arabic",Arial,sans-serif}
a{color:var(--brand)} a:hover{color:var(--brand-dark)} a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(216,155,43,.7);outline-offset:3px}
.shell{width:min(1180px,calc(100% - 32px));margin:0 auto}.skip-link{position:absolute;left:-999px;top:8px;z-index:10;padding:10px 12px;background:var(--ink);color:#fff;border-radius:8px}.skip-link:focus{left:8px}
.site-header{position:sticky;top:0;z-index:5;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-shell{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:14px}.brand{display:inline-flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none;min-width:245px}.brand-mark{display:grid;place-items:center;flex:0 0 46px;width:46px;height:46px;border-radius:11px;overflow:hidden;background:#111820;box-shadow:0 8px 18px rgba(23,33,47,.18)}.brand-mark img{display:block;width:100%;height:100%;object-fit:cover}.brand small{display:block;color:var(--muted);font-size:.82rem}.version-badge{white-space:nowrap;border:1px solid var(--line);background:var(--soft);color:var(--brand-dark);border-radius:999px;padding:5px 10px;font-weight:800;font-size:.82rem}
.site-nav{display:flex;align-items:center;justify-content:flex-end;gap:3px;flex-wrap:wrap}.site-nav a{padding:8px 9px;border-radius:8px;color:var(--muted);text-decoration:none;font-size:.92rem;font-weight:650}.site-nav a:hover,.site-nav a[aria-current=page]{color:var(--brand-dark);background:var(--soft)}
.nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:8px;padding:9px 12px;font:inherit;font-weight:700;color:var(--brand-dark)}
.utility-row{display:grid;grid-template-columns:auto minmax(220px,430px) auto;align-items:start;gap:12px;padding:0 0 12px}.external-links{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.external-links a,.language-switcher summary{border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px 9px;text-decoration:none;color:var(--brand-dark);font-weight:700;font-size:.9rem;cursor:pointer}
.language-switcher{position:relative}.language-switcher div{position:absolute;top:40px;left:0;z-index:6;display:grid;grid-template-columns:repeat(3,minmax(110px,1fr));gap:4px;width:min(520px,calc(100vw - 32px));max-height:340px;overflow:auto;padding:10px;border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:var(--shadow)}[dir=rtl] .language-switcher div{left:auto;right:0}.language-switcher:not([open]) div{display:none}.language-switcher a{padding:8px;border-radius:6px;text-decoration:none;color:var(--ink)}.language-switcher a:hover{background:var(--soft)}
.search-form{position:relative;display:grid;grid-template-columns:auto 1fr;align-items:center;gap:8px}.search-form label{font-weight:800;color:var(--muted);font-size:.9rem}.search-form input{min-height:38px;border:1px solid var(--line);border-radius:8px;padding:8px 10px;font:inherit}.search-results{position:absolute;left:0;right:0;top:44px;z-index:7;max-height:360px;overflow:auto;border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:var(--shadow);padding:8px}.search-results a{display:block;text-decoration:none;padding:8px;border-radius:6px}.search-results a:hover{background:var(--soft)}.search-results small{display:block;color:var(--muted)}
.hero-home{min-height:72vh;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(280px,.9fr);align-items:center;gap:clamp(28px,6vw,72px);padding:50px 0 34px}.product-shot{position:relative;display:grid;place-items:center;min-height:410px}.product-shot:before{content:"";position:absolute;width:78%;aspect-ratio:1;border-radius:30px;background:linear-gradient(135deg,rgba(21,94,159,.14),rgba(216,155,43,.16));transform:rotate(4deg)}.product-shot img{position:relative;width:min(88%,390px);border-radius:28px;filter:drop-shadow(0 26px 30px rgba(23,33,47,.25))}
.kicker{display:inline-flex;align-items:center;gap:8px;margin:0 0 14px;color:var(--brand-dark);font-size:.83rem;font-weight:800;text-transform:uppercase}.kicker:before{content:"";width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 5px rgba(30,155,123,.14)}
h1,h2,h3{line-height:1.1;letter-spacing:0}h1{margin:0;font-size:clamp(2.2rem,5.2vw,4.8rem)}h2{margin-top:0;font-size:clamp(1.55rem,3vw,2.35rem)}h3{font-size:1.22rem;margin-top:1.8rem}.lead{max-width:760px;color:var(--muted);font-size:clamp(1.06rem,1.8vw,1.26rem)}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 15px;border-radius:8px;border:1px solid transparent;font-weight:800;text-decoration:none}.button.primary{background:var(--brand);color:#fff;box-shadow:0 12px 26px rgba(21,94,159,.24)}.button.primary:hover{background:var(--brand-dark);color:#fff}.button.secondary{background:rgba(255,255,255,.82);border-color:var(--line);color:var(--brand-dark)}
.page-hero{padding:42px 0 30px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.48)}.page-hero h1{font-size:clamp(2rem,4vw,3.5rem);max-width:930px}.page-hero p:last-child{max-width:800px;color:var(--muted);font-size:1.1rem}.breadcrumbs{font-size:.9rem;margin-bottom:14px;color:var(--muted)}.breadcrumbs a{text-decoration:none;color:var(--muted)}
.section{padding:42px 0}.section.tight{padding-top:22px}.grid{display:grid;gap:14px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.card{min-width:0;border:1px solid var(--line);border-radius:8px;background:var(--panel);box-shadow:0 10px 24px rgba(23,33,47,.06);padding:18px}.link-card{display:flex;min-height:112px;flex-direction:column;gap:8px;color:var(--ink);text-decoration:none;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.link-card:hover{color:var(--ink);transform:translateY(-2px);border-color:rgba(21,94,159,.42);box-shadow:var(--shadow)}.link-card span,.muted{color:var(--muted)}.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.stat strong{display:block;color:var(--brand-dark);font-size:1.7rem;line-height:1}
.doc-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:26px;align-items:start}.toc{position:sticky;top:138px;border:1px solid var(--line);border-radius:8px;background:rgba(255,255,255,.82);padding:14px}.toc strong{display:block;margin-bottom:8px}.toc a{display:block;padding:6px 0;color:var(--muted);text-decoration:none;font-size:.94rem}.toc a:hover{color:var(--brand-dark)}.prose{min-width:0}.prose>:first-child{margin-top:0}.prose p,.prose li{color:#2a3544;overflow-wrap:anywhere}.prose img{max-width:100%;height:auto}.prose table{width:100%;border-collapse:collapse;margin:18px 0;overflow:auto;display:block}.prose th,.prose td{border:1px solid var(--line);padding:9px 10px;text-align:left}.prose th{background:var(--soft)}
code{font-family:Consolas,"Cascadia Mono",monospace;font-size:.94em;border-radius:5px;background:#e9eef5;padding:.12em .35em;overflow-wrap:anywhere}pre{position:relative;max-width:100%;overflow-x:auto;border-radius:8px;background:var(--code-bg);color:var(--code-ink);padding:16px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.08)}pre code{display:block;background:transparent;color:inherit;padding:0;white-space:pre;overflow-wrap:normal}.copy-code{position:absolute;top:8px;right:8px;border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.12);color:#fff;border-radius:7px;padding:5px 8px;font-weight:800;cursor:pointer}[dir=rtl] .copy-code{right:auto;left:8px}
.example-card{display:grid;gap:10px}.example-card h3{margin:0}.copy-row{display:flex;justify-content:space-between;align-items:center;gap:10px}.copy-button{border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px 10px;color:var(--brand-dark);font-weight:750;cursor:pointer}
.callout{border-left:4px solid var(--brand);background:#eef6ff;padding:14px 16px;border-radius:8px;margin:14px 0}.callout.tip{border-color:var(--accent);background:#ecfbf6}.callout.warning{border-color:var(--danger);background:#fff0ec}.callout.new-in-2-1-7{border-color:var(--gold);background:#fff8e8}[dir=rtl] .callout{border-left:0;border-right:4px solid var(--brand)}
.language-tools{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:14px;align-items:end;margin-bottom:16px}.language-tools input{width:100%;min-height:44px;border:1px solid var(--line);border-radius:8px;padding:10px 12px;font:inherit}.prev-next{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.site-footer{margin-top:34px;padding:28px 0;border-top:1px solid var(--line);background:rgba(255,255,255,.62);color:var(--muted)}.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.footer-grid p{margin:6px 0 0}
@media (max-width:980px){.utility-row{grid-template-columns:1fr}.external-links{justify-content:flex-start}.hero-home,.grid.two,.grid.three,.stat-grid,.doc-layout,.language-tools,.footer-grid,.prev-next{grid-template-columns:1fr}.product-shot{order:-1;min-height:310px}.product-shot img{width:min(82vw,320px)}.toc{position:static}.nav-toggle{display:inline-flex}.site-nav{display:none;position:absolute;left:16px;right:16px;top:68px;padding:10px;border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:var(--shadow);justify-content:flex-start}.site-nav.is-open{display:grid;grid-template-columns:1fr 1fr}.site-nav a{padding:10px}.version-badge{display:none}}
@media (max-width:560px){.shell{width:min(100% - 22px,1180px)}.brand{min-width:0}.brand small{display:none}.actions,.button{width:100%}.site-nav.is-open{grid-template-columns:1fr}.language-switcher div{grid-template-columns:1fr 1fr}.search-form{grid-template-columns:1fr}.search-results{top:74px}}