:root {
  --background:#fff; --surface:#fff; --aside:#fafbfe; --ink:#172338; --ink-strong:#101b30; --muted:#6c788d; --faint:#8b96a8;
  --line:#e7ebf1; --line-strong:#dce3ed; --soft:#f5f7fb; --soft-blue:#eff4ff; --blue:#315bd7; --blue-bright:#335DFF;
  --cyan:#02a9c6; --nav-hover:#f0f3f8; --code-bg:#142139; --code-fg:#e6edf9;
  --header:68px; --left:280px; --right:248px; --shadow:0 20px 65px rgba(15,32,63,.18);
  color-scheme:light;
}
html[data-theme="dark"] {
  --background:#101722; --surface:#151f2d; --aside:#111a27; --ink:#d6deeb; --ink-strong:#f7f9fd; --muted:#a5afbf; --faint:#8592a8;
  --line:#263247; --line-strong:#32415a; --soft:#1b283a; --soft-blue:#192c4c; --blue:#8bacff; --blue-bright:#85a5ff;
  --cyan:#5ed5eb; --nav-hover:#1b293a; --code-bg:#0a101b; --code-fg:#dfe9fc;
  color-scheme:dark;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--background);color:var(--ink);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;font-size:14px;line-height:1.7;-webkit-font-smoothing:antialiased}button,input{font:inherit}button{cursor:pointer}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:none;color:var(--blue-bright)}svg{width:20px;height:20px;display:block;flex-shrink:0}::selection{background:rgba(75,124,244,.2)}
button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #60a5fa;outline-offset:2px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
.topbar{z-index:30;height:var(--header);position:fixed;inset:0 0 auto;background:var(--surface);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 22px;gap:16px}.brand-zone{display:flex;align-items:center;gap:14px;min-width:255px}.brand{display:flex;align-items:center;gap:10px;color:var(--ink-strong)}.brand:hover{color:var(--ink-strong)}.brand-mark{display:grid;place-items:center;color:white;width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,#3158e9,#02bbbd);font:800 26px/1 Georgia,serif;box-shadow:0 5px 13px rgba(36,93,225,.17)}.brand-text{font-weight:850;letter-spacing:-.9px;font-size:21px;line-height:17px}.brand-text span{font-weight:450}.brand-text small{display:block;color:var(--faint);font-size:8.5px;font-weight:730;letter-spacing:1.4px;margin-top:5px}.brand-divider{width:1px;height:28px;background:var(--line-strong);margin-left:4px}.app-name{font-weight:670;color:var(--muted);font-size:14px}.top-middle{display:flex;gap:14px;align-items:center;color:var(--muted);font-size:12px}.quiet-pill{display:inline-flex;align-items:center;gap:8px;font-weight:620;color:var(--muted);border:1px solid var(--line);padding:6px 12px;border-radius:20px;background:var(--aside)}.live-dot,.status-dot{width:7px;height:7px;border-radius:50%;background:#24bea4;box-shadow:0 0 0 3px rgba(36,190,164,.1)}.top-version{font-size:12px}.header-actions{display:flex;align-items:center;gap:11px}.search-trigger{height:36px;display:flex;align-items:center;gap:9px;min-width:246px;padding:0 9px 0 12px;border-radius:8px;border:1px solid var(--line-strong);background:var(--aside);color:var(--muted);font-size:12px;text-align:left}.search-trigger:hover{border-color:var(--blue);background:var(--soft-blue)}.search-trigger svg{width:17px;height:17px}.search-trigger span{flex:1}.search-trigger kbd{font-size:11px;font-family:inherit;color:var(--faint);padding:1px 5px;border:1px solid var(--line-strong);border-radius:4px;background:var(--surface)}.icon-button{height:36px;width:36px;display:grid;place-items:center;background:transparent;color:var(--muted);border:1px solid var(--line);border-radius:8px}.icon-button:hover{color:var(--ink-strong);background:var(--soft)}.mobile-menu{display:none}
.sidebar{width:var(--left);position:fixed;top:var(--header);left:0;bottom:0;border-right:1px solid var(--line);background:var(--aside);z-index:20;overflow-y:auto;overscroll-behavior:contain}.sidebar-inner{min-height:100%;display:flex;flex-direction:column;padding:28px 15px 18px}.sidebar-header{padding:0 10px;display:flex;justify-content:space-between;align-items:center;font-size:10px;font-weight:770;letter-spacing:1.35px;color:var(--faint);margin-bottom:21px}.count-tag{font-size:10px;background:var(--soft);border:1px solid var(--line);color:var(--faint);padding:1px 8px;border-radius:20px;letter-spacing:0}.nav-group{margin-bottom:20px}.nav-heading{font-size:10px;text-transform:uppercase;letter-spacing:1.1px;font-weight:770;color:var(--muted);margin:0 0 7px;padding:0 10px;display:flex;align-items:center;gap:8px}.nav-heading::after{content:"";flex:1;height:1px;background:var(--line);margin-left:7px}.nav-item{display:flex;align-items:center;gap:10px;font-size:12.6px;font-weight:530;color:var(--muted);padding:8px 11px;border-radius:7px;line-height:1.35;position:relative;margin-bottom:2px;transition:background .15s}.nav-item:hover{color:var(--ink-strong);background:var(--nav-hover)}.nav-item.active{color:var(--blue);background:var(--soft-blue);font-weight:725}.nav-item.active:before{content:"";position:absolute;left:-15px;top:6px;bottom:6px;width:3px;background:var(--blue-bright);border-radius:0 4px 4px 0}.nav-bullet{width:5px;height:5px;flex:0 0 5px;border-radius:50%;border:1.5px solid var(--faint);opacity:.75}.nav-item.active .nav-bullet{border-color:var(--blue-bright);background:var(--blue-bright);opacity:1}.sidebar-footer{margin-top:auto;border:1px solid var(--line);background:var(--surface);border-radius:11px;padding:13px 12px;display:flex;align-items:center;gap:12px}.sidebar-footer .status-dot{flex-shrink:0}.sidebar-footer strong{display:block;font-size:12px;color:var(--ink-strong);line-height:1.25}.sidebar-footer small{display:block;font-size:10px;color:var(--faint);line-height:1.5;margin-top:4px}.footer-arrow{font-size:17px;margin-left:auto;color:var(--faint)}
.layout{margin-left:var(--left);padding-top:var(--header);display:flex;align-items:flex-start;min-height:100vh}.layout main{flex:1;min-width:0;min-height:calc(100vh - var(--header));display:flex;justify-content:center}.article-wrap{width:100%;max-width:940px;padding:40px 64px 42px}.breadcrumb{font-size:12px;display:flex;align-items:center;gap:10px;color:var(--faint);margin-bottom:18px}.breadcrumb a{color:var(--muted)}.breadcrumb a:hover{color:var(--blue)}.crumb-chevron{font-size:15px;color:var(--faint)}.breadcrumb .current-crumb{color:var(--ink);font-weight:610;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.article-tools{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.draft-indicator{font-size:11px;font-weight:670;color:var(--muted);display:inline-flex;gap:7px;align-items:center}.draft-indicator span{width:6px;height:6px;border-radius:50%;background:#d69a3e}.copy-link{display:flex;gap:7px;align-items:center;background:transparent;color:var(--muted);font-size:11px;border:0;padding:7px 0}.copy-link:hover{color:var(--blue)}.copy-link svg{height:14px;width:14px}
.doc-article{padding-bottom:42px}.doc-article h1,.doc-article h2,.doc-article h3,.doc-article h4{color:var(--ink-strong);line-height:1.25;scroll-margin-top:calc(var(--header) + 24px);letter-spacing:-.48px}.doc-article h1{font-size:39px;font-weight:790;letter-spacing:-1.55px;margin:0 0 19px}.doc-article h2{font-size:23px;font-weight:745;margin:45px 0 15px;padding-top:1px;letter-spacing:-.85px}.doc-article h3{font-size:18px;font-weight:730;margin:32px 0 10px}.doc-article h4{font-size:15px;margin:24px 0 8px}.doc-article p{color:var(--ink);margin:0 0 18px;font-size:14px;line-height:1.87}.doc-article > p:first-of-type{font-size:15px;color:var(--muted);line-height:1.8}.doc-article ul,.doc-article ol{margin:11px 0 22px;padding-left:24px}.doc-article li{margin:8px 0;line-height:1.7;padding-left:3px}.doc-article li::marker{color:var(--blue)}.doc-article strong{font-weight:750;color:var(--ink-strong)}.doc-article a{font-weight:590;border-bottom:1px solid rgba(49,91,215,.25)}.doc-article a:hover{border-color:var(--blue)}.doc-article hr{border:0;border-top:1px solid var(--line);margin:28px 0}.doc-article blockquote{position:relative;border-left:3px solid var(--blue-bright);padding:17px 19px 15px;margin:25px 0;border-radius:0 9px 9px 0;background:var(--soft-blue);font-size:13px}.doc-article blockquote p{margin:0;color:var(--ink);font-size:13px;line-height:1.72}.doc-article blockquote strong{color:var(--blue)}
.doc-article table{display:block;width:100%;border-collapse:collapse;overflow-x:auto;white-space:normal;font-size:12.7px;margin:22px 0 31px;scrollbar-width:thin}.doc-article table thead{background:var(--soft)}.doc-article th,.doc-article td{padding:12px 15px;border-bottom:1px solid var(--line);text-align:left;line-height:1.52;min-width:90px;vertical-align:top}.doc-article th{font-size:11.5px;font-weight:745;color:var(--ink-strong);white-space:nowrap;border-top:1px solid var(--line)}.doc-article td{color:var(--ink)}.doc-article tr:hover td{background:var(--aside)}.doc-article pre{overflow:auto;padding:19px 22px;background:var(--code-bg);color:var(--code-fg);border-radius:10px;font-size:12.4px;line-height:1.7;margin:23px 0 27px;white-space:pre;tab-size:2}.doc-article code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.91em;background:var(--soft);color:var(--blue);border-radius:4px;padding:2px 5px}.doc-article pre code{font-size:inherit;background:transparent;color:inherit;padding:0}.doc-article h1 + p{font-size:15.4px;color:var(--muted)}
.quick-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:28px 0 36px}.quick-card{padding:19px 17px 16px;border:1px solid var(--line);border-radius:12px;background:var(--surface);box-shadow:0 3px 12px rgba(16,42,71,.025);transition:transform .16s,border-color .16s}.quick-card:hover{border-color:var(--blue);transform:translateY(-2px)}.quick-card .q-icon{width:34px;height:34px;border-radius:9px;background:var(--soft-blue);color:var(--blue);display:grid;place-items:center;font-weight:820;font-size:18px;margin-bottom:16px}.quick-card strong{display:block;font-size:14px;margin-bottom:3px}.quick-card small{font-size:11px;color:var(--muted);line-height:1.5;display:block}.quick-card .q-arrow{float:right;color:var(--blue)}
.page-pagination{border-top:1px solid var(--line);padding-top:24px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.page-next{min-height:80px;padding:14px 16px;border:1px solid var(--line);border-radius:10px;display:flex;flex-direction:column;justify-content:center;transition:border-color .15s,background .15s}.page-next:hover{border-color:var(--blue);background:var(--soft)}.page-next.next{text-align:right}.page-next small{color:var(--faint);font-size:11px;margin-bottom:4px}.page-next strong{color:var(--ink-strong);font-size:13px}.page-next.blank{visibility:hidden}.main-footer{margin-top:38px;border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;gap:10px;color:var(--faint);font-size:10.7px}
.toc-sidebar{width:var(--right);flex:0 0 var(--right);border-left:1px solid var(--line);min-height:calc(100vh - var(--header));align-self:stretch}.toc-stick{position:sticky;top:var(--header);padding:48px 21px 28px 24px;max-height:calc(100vh - var(--header));overflow-y:auto}.toc-heading{color:var(--faint);font-size:10px;letter-spacing:1.2px;font-weight:790;margin-bottom:15px}.toc-link{display:block;padding:6px 0 6px 13px;color:var(--muted);font-size:11.8px;line-height:1.52;border-left:1px solid var(--line-strong);margin:0;transition:color .12s}.toc-link.level-3{padding-left:27px}.toc-link:hover{color:var(--blue)}.toc-link.active{border-left:2px solid var(--blue);color:var(--blue);font-weight:680;padding-left:12px}.toc-link.active.level-3{padding-left:26px}.toc-help{display:flex;align-items:center;gap:10px;padding:14px 0;margin-top:33px;border-top:1px solid var(--line)}.toc-help-icon{display:grid;place-items:center;width:30px;height:30px;border:1px solid var(--line-strong);border-radius:9px;font-size:18px;font-weight:650;color:var(--blue);background:var(--soft)}.toc-help strong{font-size:12px;color:var(--ink-strong);display:block}.toc-help small{display:block;font-size:10.4px;line-height:1.5;color:var(--muted);margin-top:2px}.toc-help:hover strong{color:var(--blue)}
.search-overlay[hidden],.mobile-shade[hidden]{display:none}.search-overlay{position:fixed;inset:0;z-index:80}.search-backdrop{position:absolute;inset:0;background:rgba(12,22,39,.52);backdrop-filter:blur(3px)}.search-dialog{position:relative;z-index:81;width:calc(100% - 36px);max-width:620px;margin:14vh auto 0;background:var(--surface);border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow);overflow:hidden}.search-input-row{display:flex;gap:12px;align-items:center;padding:16px;border-bottom:1px solid var(--line)}.search-input-row>svg{color:var(--blue)}.search-input-row input{background:transparent;border:0;outline:none;width:100%;min-width:0;font-size:15px;color:var(--ink-strong)}.search-input-row input:focus-visible{outline:0}.search-input-row input::placeholder{color:var(--faint)}#search-escape{border:1px solid var(--line-strong);color:var(--faint);background:var(--soft);border-radius:5px;padding:3px 6px;font-size:10px}.search-results{max-height:min(50vh,480px);overflow:auto;padding:8px}.result-group-label{font-size:10px;font-weight:770;letter-spacing:1px;color:var(--faint);padding:14px 12px 8px}.search-result{display:flex;align-items:flex-start;gap:13px;width:100%;text-align:left;padding:11px;border:0;background:transparent;border-radius:8px;color:var(--ink);border-bottom:1px solid transparent}.search-result:hover,.search-result.selected{background:var(--soft-blue)}.result-icon{display:grid;place-items:center;flex:0 0 30px;width:30px;height:30px;background:var(--soft);color:var(--blue);border-radius:7px;font-size:16px}.result-content{min-width:0;flex:1}.result-content strong{display:block;font-size:13px;color:var(--ink-strong);margin-bottom:1px}.result-content small{display:block;color:var(--muted);font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.result-section{color:var(--faint);font-size:10px;flex-shrink:0;max-width:120px;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.no-results{padding:30px 20px;color:var(--muted);text-align:center;font-size:13px}.search-bottom{padding:11px 16px;border-top:1px solid var(--line);color:var(--faint);font-size:10.5px;display:flex;justify-content:space-between;background:var(--aside)}.toast{position:fixed;bottom:26px;left:50%;transform:translate(-50%,14px);background:var(--ink-strong);color:var(--background);border-radius:9px;padding:10px 18px;font-size:12px;box-shadow:var(--shadow);z-index:100;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}.toast.show{transform:translate(-50%,0);opacity:1}
@media(max-width:1350px){:root{--right:215px;--left:266px}.article-wrap{padding-left:42px;padding-right:42px}.toc-stick{padding-left:17px;padding-right:12px}.top-middle{display:none}}
@media(max-width:1120px){.toc-sidebar{display:none}.article-wrap{max-width:930px;padding-left:58px;padding-right:58px}.top-middle{display:flex}}
@media(max-width:840px){:root{--left:0px;--header:62px}.topbar{padding:0 15px}.brand-zone{min-width:0;gap:11px}.mobile-menu{display:grid}.sidebar{width:286px;transform:translateX(-105%);transition:transform .2s;box-shadow:var(--shadow)}body.nav-open .sidebar{transform:translateX(0)}.mobile-shade{position:fixed;inset:var(--header) 0 0;background:rgba(16,28,46,.45);z-index:19}.layout{margin-left:0}.article-wrap{max-width:860px;padding:32px 30px 40px}.top-middle{display:none}.search-trigger{min-width:36px;width:36px;justify-content:center;padding:0}.search-trigger span,.search-trigger kbd{display:none}.brand-divider,.app-name{display:none}}
@media(max-width:550px){.brand-mark{height:34px;width:34px;font-size:24px}.brand-text{font-size:19px}.brand-text small{font-size:7.5px}.article-wrap{padding:26px 21px 35px}.doc-article h1{font-size:31px;letter-spacing:-1.15px}.doc-article h2{font-size:20px}.doc-article h3{font-size:17px}.doc-article p,.doc-article li{font-size:13.2px}.quick-cards{grid-template-columns:1fr;gap:9px}.quick-card{display:grid;grid-template-columns:34px 1fr;column-gap:14px;padding:13px}.quick-card .q-icon{grid-row:span 2;margin:0}.quick-card strong{margin:0}.quick-card small{margin:0}.copy-link span{display:none}.main-footer{flex-direction:column}.page-next{min-height:65px}.page-next strong{font-size:11.5px}.doc-article th,.doc-article td{padding:10px 12px}.search-dialog{margin-top:8vh}.result-section{display:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.doc-article img{display:block;max-width:100%;height:auto;border-radius:12px;margin:20px 0 24px}