@layer nb-base,nb-print;@layer nb-base{:root{color-scheme:light dark;--nb-bg: light-dark(#ffffff, #0e1116);--nb-bg-soft: light-dark(#f6f7f9, #151a21);--nb-bg-elev: light-dark(#ffffff, #161b22);--nb-border: light-dark(#e4e7ec, #272e38);--nb-text: light-dark(#1c2024, #e7ebf0);--nb-text-soft: light-dark(#5b6470, #aab2bd);--nb-text-faint: light-dark(#8a929e, #768091);--nb-accent: light-dark(#2f6feb, #6ea0ff);--nb-accent-soft: light-dark(#e8f0ff, #182539);--nb-ref: light-dark(#2f6feb, #6ea0ff);--nb-work: light-dark(#b5651d, #e0a060);--nb-code-bg: light-dark(#0d1117, #0b0e13);--nb-topbar-h: 52px;--nb-sidebar-w: 290px;--nb-toc-w: 320px;--nb-content-max: clamp(50rem, 62vw, 80rem);--nb-radius: 8px;--nb-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;--nb-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--bg: var(--nb-bg);--bg-soft: var(--nb-bg-soft);--bg-elev: var(--nb-bg-elev);--border: var(--nb-border);--text: var(--nb-text);--text-soft: var(--nb-text-soft);--text-faint: var(--nb-text-faint);--accent: var(--nb-accent);--accent-soft: var(--nb-accent-soft);--ref: var(--nb-ref);--work: var(--nb-work);--code-bg: var(--nb-code-bg);--topbar-h: var(--nb-topbar-h);--sidebar-w: var(--nb-sidebar-w);--toc-w: var(--nb-toc-w);--content-max: var(--nb-content-max);--radius: var(--nb-radius);--mono: var(--nb-mono);--sans: var(--nb-sans)}:root[data-scheme=light]{color-scheme:light}:root[data-scheme=dark]{color-scheme:dark}*{box-sizing:border-box}[hidden]{display:none!important}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--topbar-h) + 1rem)}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.topbar{position:sticky;top:0;z-index:50;height:var(--topbar-h);display:flex;align-items:center;gap:1.5rem;padding:0 1rem;background:var(--bg-elev);border-bottom:1px solid var(--border)}.brand{font-weight:700;color:var(--text);white-space:nowrap}.brand span{font-weight:400;color:var(--text-faint)}.brand:hover{text-decoration:none}.search{position:relative;flex:1;max-width:520px}.topbar-link{font-size:13px;font-weight:600;color:var(--text-soft);white-space:nowrap}.topbar-link:hover{color:var(--accent);text-decoration:none}.nb-nav-link{display:inline-flex;align-items:center;gap:6px}.nb-nav-link svg{flex:none}.nb-nav-link--icon{padding:4px;border-radius:6px}.nb-nav-link--icon:hover{background:var(--accent-soft)}.topbar-me{display:inline-flex;align-items:center;gap:4px;font-size:13px;color:var(--text-faint)}.topbar-me input{width:8ch;padding:2px 6px;font-size:13px;color:var(--text);background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius)}.topbar-me input:focus{width:12ch;border-color:var(--accent);outline:none}.search input{width:100%;height:34px;padding:0 .75rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-soft);color:var(--text);font-size:14px}.search input:focus{outline:none;border-color:var(--accent);background:var(--bg)}.search-results{position:absolute;top:40px;left:0;right:0;max-height:60vh;overflow-y:auto;background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 8px 28px #0000002e;padding:4px}.search-results a{display:flex;align-items:center;flex-wrap:wrap;gap:.6rem;padding:7px 9px;border-radius:6px;color:var(--text)}.search-results a:hover{background:var(--accent-soft);text-decoration:none}.r-space{font-size:11px;font-weight:600;padding:1px 6px;border-radius:999px;color:#fff;flex-shrink:0}.r-space.reference{background:var(--ref)}.r-space.workbench{background:var(--work)}.r-empty{padding:10px;color:var(--text-faint)}.r-excerpt{flex-basis:100%;font-size:12px;line-height:1.35;color:var(--text-faint);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.r-excerpt mark{background:var(--accent-soft);color:var(--text);border-radius:3px;padding:0 2px}.topbar-spacer{flex:1 1 0}.lang-opt{padding:2px 6px;font-size:12px;font-weight:600;color:var(--text-faint);border-radius:6px}.lang-opt:hover{color:var(--accent);text-decoration:none}.lang-opt.active{color:var(--text);background:var(--bg-soft)}.lang-menu,.export-menu{display:inline-flex;align-items:center}.lang-menu{position:relative}.lang-menu>summary{cursor:pointer;list-style:none}.lang-menu>summary::-webkit-details-marker{display:none}.lang-summary{display:inline-flex;align-items:center;gap:5px;padding:3px 7px;border-radius:6px;color:var(--text-faint);font-size:12px;font-weight:600}.lang-summary:hover,.lang-menu[open] .lang-summary{color:var(--text);background:var(--bg-soft)}.lang-summary svg{display:block}.lang-menu-pop{position:absolute;top:calc(100% + 6px);right:0;z-index:60;min-width:160px;display:flex;flex-direction:column;padding:4px;background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 8px 28px #0000002e}.lang-menu-pop a,.lang-menu-pop button{display:flex;align-items:baseline;gap:8px;width:100%;padding:7px 10px;border:none;background:none;border-radius:6px;color:var(--text);font:inherit;font-size:13px;white-space:nowrap;text-align:left;cursor:pointer}.lang-menu-pop a:hover,.lang-menu-pop button:hover{background:var(--accent-soft);text-decoration:none}.lang-menu-pop a.active,.lang-menu-pop button.active{background:var(--bg-soft)}.lang-menu-pop .lang-code{min-width:2.2ch;font-weight:700;font-size:11px;color:var(--text-faint)}.lang-menu-pop a.active .lang-code,.lang-menu-pop button.active .lang-code{color:var(--accent)}.i18n-banner{margin:0 0 18px;padding:8px 12px;font-size:13px;color:var(--text-faint);background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius)}.export-menu{position:relative}.export-menu>summary{cursor:pointer;list-style:none}.export-menu>summary::-webkit-details-marker{display:none}.export-summary{display:inline-flex;align-items:center;padding:2px}.export-summary svg{display:block}.export-menu-pop{position:absolute;top:calc(100% + 6px);right:0;z-index:60;min-width:220px;display:flex;flex-direction:column;padding:4px;background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 8px 28px #0000002e}.export-menu-pop a{padding:7px 10px;border-radius:6px;color:var(--text);font-size:13px;white-space:nowrap}.export-menu-pop a:hover{background:var(--accent-soft);text-decoration:none}button.topbar-me,button.drawer-me{font-family:inherit;background:none;border:none;cursor:pointer}button.topbar-me{padding:4px 8px;border-radius:6px;color:var(--text-faint)}button.topbar-me:hover{color:var(--text);background:var(--bg-soft)}.nb-identity-name{max-width:16ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nb-dialog{width:calc(100vw - 2rem);max-width:420px;padding:0;border:1px solid var(--border);border-radius:12px;background:var(--bg-elev);color:var(--text);box-shadow:0 24px 60px #0006}.nb-dialog::backdrop{background:#00000080}.nb-identity-form{display:flex;flex-direction:column;gap:1rem;padding:1.5rem}.nb-identity-form h2{margin:0;font-size:1.2rem}.nb-identity-lede{margin:0;color:var(--text-soft);font-size:.9rem;line-height:1.5}.nb-field{display:flex;flex-direction:column;gap:5px}.nb-field-label{font-size:.85rem;font-weight:600}.nb-field-label em{font-weight:400;font-style:normal;color:var(--text-faint)}.nb-field input{padding:9px 11px;font-size:.95rem;color:var(--text);background:var(--bg-soft);border:1px solid var(--border);border-radius:8px}.nb-field input:focus{outline:none;border-color:var(--accent);background:var(--bg)}.nb-hint{color:var(--text-faint);font-size:.8rem}.nb-identity-actions{display:flex;justify-content:flex-end;gap:.5rem;margin-top:.25rem}.nb-btn,.nb-btn-ghost{padding:8px 16px;font:inherit;font-weight:600;border-radius:8px;cursor:pointer}.nb-btn{border:none;background:var(--accent);color:#fff}.nb-btn-ghost{border:1px solid var(--border);background:none;color:var(--text-soft)}.shell{display:grid;grid-template-columns:var(--sidebar-w) minmax(0,1fr) var(--toc-w);align-items:start}.shell--full{grid-template-columns:var(--sidebar-w) minmax(0,1fr)}.sidebar,.rail{position:sticky;top:var(--topbar-h);height:calc(100vh - var(--topbar-h));overflow-y:auto}@supports (height: 100dvh){.sidebar,.rail{height:calc(100dvh - var(--topbar-h))}}.sidebar{border-right:1px solid var(--border);padding:.75rem .5rem 3rem;background:var(--bg-soft)}.rail{padding:1.1rem .9rem 3rem}.content{min-width:0;padding:1.25rem clamp(1rem,4vw,3rem) 5rem}.content>.prose,.content>.breadcrumb{max-width:var(--content-max);margin-inline:auto}.site-footer{padding:1.1rem clamp(1rem,4vw,3rem);border-top:1px solid var(--border);background:var(--bg-soft);font-size:13px;color:var(--text-soft)}.site-footer-inner{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1.4rem}.site-footer-links{display:flex;flex-wrap:wrap;gap:.4rem 1.2rem}.nb-footer-link{color:var(--text-soft)}.nb-footer-link:hover{color:var(--accent);text-decoration:none}.site-footer-powered{margin-left:auto;color:var(--text-faint)}.nav-filter{padding:.25rem .4rem .6rem}.nav-filter input{width:100%;height:30px;padding:0 .6rem;border:1px solid var(--border);border-radius:6px;background:var(--bg);color:var(--text);font-size:13px}.nav-filter input:focus{outline:none;border-color:var(--accent)}.space{margin-bottom:.75rem}.space>.space-title{display:flex;align-items:baseline;gap:.5rem;padding:.35rem .5rem;cursor:pointer;list-style:none;border-radius:6px}.space>.space-title::-webkit-details-marker{display:none}.space>.space-title:hover{background:var(--accent-soft)}.space-name{font-weight:700;font-size:13px;text-transform:uppercase;letter-spacing:.04em}.space[open] .space-name{color:var(--accent)}.space-sub{font-family:var(--mono);font-size:11px;color:var(--text-faint)}.space-link{margin:0 0 .25rem;padding-left:.75rem;font-size:12px}.nb-sidebar-links{display:flex;flex-direction:column;gap:2px;margin:1rem 0 0;padding-top:.75rem;border-top:1px solid var(--border)}.nb-sidebar-links-title{margin:0 0 .25rem;padding:0 .5rem;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--text-faint)}.nb-sidebar-link{padding:5px 8px;border-radius:6px;font-size:13px;color:var(--text-soft)}.nb-sidebar-link:hover{background:var(--accent-soft);color:var(--accent);text-decoration:none}.nav-list{list-style:none;margin:0;padding:0 0 0 .55rem}.nav-list .nav-list{border-left:1px solid var(--border);margin-left:.35rem;padding-left:.5rem}.nav-group>details>summary{display:block;padding:3px 6px;cursor:pointer;font-weight:600;font-size:13px;color:var(--text-soft);border-radius:5px;list-style:none}.nav-group>details>summary::-webkit-details-marker{display:none}.nav-group>details>summary:before{content:"▸";display:inline-block;width:1em;font-size:10px;color:var(--text-faint);transition:transform .12s}.nav-group>details[open]>summary:before{transform:rotate(90deg)}.nav-group>details>summary:hover{background:var(--accent-soft)}.nav-a{display:block;padding:3px 6px 3px 1.4em;font-size:13px;color:var(--text-soft);border-radius:5px}.nav-a:hover{background:var(--accent-soft);color:var(--text);text-decoration:none}.nav-a.active{background:var(--accent-soft);color:var(--accent);font-weight:600}.breadcrumb{font-size:12.5px;color:var(--text-faint);margin-bottom:1rem}.breadcrumb .sep{margin:0 .4rem;opacity:.6}.toc-title{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-faint);margin:0 0 .5rem}.toc-inner ul{list-style:none;margin:0;padding:0;border-left:1px solid var(--border)}.toc-inner li a{display:block;padding:2px 0 2px .75rem;font-size:12.5px;color:var(--text-soft);border-left:2px solid transparent;margin-left:-1px}.toc-inner li.d3 a{padding-left:1.5rem}.toc-inner li a:hover{color:var(--accent);text-decoration:none}.prose{word-wrap:break-word}.prose h1{font-size:1.9rem;line-height:1.2;margin:0 0 1.2rem;letter-spacing:-.01em}.prose h2{font-size:1.4rem;margin:2.2rem 0 .9rem;padding-bottom:.3rem;border-bottom:1px solid var(--border)}.prose h3{font-size:1.15rem;margin:1.8rem 0 .7rem}.prose h4{font-size:1rem;margin:1.4rem 0 .5rem}.prose h2,.prose h3,.prose h4{scroll-margin-top:calc(var(--topbar-h) + 1rem)}.prose p,.prose li{color:var(--text)}.prose a{text-decoration:underline;text-underline-offset:2px}.prose code{font-family:var(--mono);font-size:.86em;background:var(--bg-soft);border:1px solid var(--border);border-radius:4px;padding:.1em .35em}.prose pre{background:var(--code-bg)!important;border:1px solid var(--border);border-radius:var(--radius);padding:.9rem 1rem;overflow-x:auto;font-size:13px;line-height:1.5}.prose pre code{background:none;border:none;padding:0;font-size:inherit}.prose pre.mermaid{background:none!important;border:none;padding:0;margin:1.25rem 0;text-align:center;overflow-x:auto;font-family:var(--mono);color:var(--text-soft)}.prose pre.mermaid.nb-mermaid-ok{font-family:inherit;overflow:visible}.prose pre.mermaid svg{max-width:100%;height:auto}.prose pre.mermaid.nb-mermaid-error{text-align:left;color:#dc143c}.cmt-blockbar{position:fixed;z-index:45;display:flex;gap:4px;padding:3px;background:var(--bg-elev);border:1px solid var(--border);border-radius:9px;box-shadow:0 2px 10px #0000002e}.cmt-blockbar button{display:inline-flex;align-items:center;justify-content:center;border:none;background:none;cursor:pointer;font-size:18px;line-height:1;padding:7px 9px;border-radius:6px;color:var(--text)}.cmt-blockbar button svg{display:block}.cmt-blockbar button:hover{background:var(--accent-soft)}.prose pre.mermaid.cmt-block-has,.prose img.cmt-block-has{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;cursor:pointer}.cmt-block-badge{position:absolute;z-index:61;display:inline-flex;align-items:center;gap:3px;background:var(--accent);color:#fff;font:600 12.5px/1 var(--sans);padding:5px 9px;border:none;border-radius:999px;box-shadow:0 1px 6px #0000004d;cursor:pointer}.cmt-block-badge:hover{filter:brightness(1.08)}.prose pre.mermaid.cmt-block-flash,.prose img.cmt-block-flash{animation:nb-block-flash 1.4s ease-out}@keyframes nb-block-flash{0%,45%{outline:3px solid var(--accent);outline-offset:4px}to{outline:3px solid transparent;outline-offset:4px}}.cmt-quote.cmt-block{font-style:normal}.nb-lightbox{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;padding:3vmin;background:#000000c7}.nb-lightbox[hidden]{display:none}.nb-lightbox-stage{position:relative;width:94vw;height:90vh;overflow:hidden;background:var(--bg);border-radius:var(--radius);cursor:grab;touch-action:none;overscroll-behavior:contain}.nb-lightbox-stage.nb-grabbing{cursor:grabbing}.nb-lightbox-content{position:absolute;top:0;left:0;transform-origin:0 0;will-change:transform}.nb-lightbox-content svg,.nb-lightbox-content img{display:block;width:100%;height:100%;user-select:none;-webkit-user-drag:none}.nb-lightbox-close{position:absolute;top:12px;right:16px;width:40px;height:40px;border-radius:50%;border:none;background:#ffffff29;color:#fff;font-size:18px;cursor:pointer}.nb-lightbox-close:hover{background:#ffffff47}.nb-lightbox-tools{position:absolute;bottom:18px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:2px;padding:4px;border-radius:999px;background:#14161cd1;box-shadow:0 6px 20px #0006;backdrop-filter:blur(6px)}.nb-lightbox-tools button{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border:none;border-radius:50%;background:transparent;color:#fff;font-size:17px;line-height:1;cursor:pointer}.nb-lightbox-tools button:hover{background:#ffffff2e}.nb-lightbox-pct{min-width:54px;text-align:center;color:#fff;font-size:12px;font-variant-numeric:tabular-nums;user-select:none}.prose blockquote{margin:1rem 0;padding:.4rem 1rem;border-left:3px solid var(--accent);background:var(--accent-soft);border-radius:0 6px 6px 0;color:var(--text-soft)}.prose blockquote p{margin:.3rem 0}.prose table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:13.5px;display:block;overflow-x:auto}.prose .nb-diff{display:table;width:100%}.prose th,.prose td{border:1px solid var(--border);padding:.45rem .7rem;text-align:left;vertical-align:top}.prose th{background:var(--bg-soft);font-weight:600}.prose img{max-width:100%;border-radius:6px}.prose hr{border:none;border-top:1px solid var(--border);margin:2rem 0}.prose ul,.prose ol{padding-left:1.4rem}.prose li{margin:.2rem 0}.lede{font-size:1.05rem;color:var(--text-soft);margin:-.4rem 0 1.6rem}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:1rem}.card{border:1px solid var(--border);border-radius:var(--radius);padding:.9rem 1rem;background:var(--bg-elev)}.card h3{margin:0 0 .5rem;font-size:1rem}.card ul{list-style:none;margin:0;padding:0}.card li{margin:.15rem 0;font-size:13.5px}.card .more{margin:.5rem 0 0;font-size:12px;color:var(--text-faint)}.home-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.25rem;margin-top:1.5rem}.home-card{display:block;border:1px solid var(--border);border-radius:12px;padding:1.5rem;background:var(--bg-elev);color:var(--text);transition:border-color .15s,transform .15s}.home-card:hover{border-color:var(--accent);transform:translateY(-2px);text-decoration:none}.home-card h2{margin:0 0 .3rem}.home-card p{margin:.2rem 0;color:var(--text-soft)}.nf{text-align:center;padding:2.5rem 1rem .5rem}.nf-code{margin:0;font-size:clamp(4rem,13vw,7rem);font-weight:800;line-height:1;letter-spacing:-.03em;color:var(--accent)}.nf h1{margin:.25rem 0 .5rem;font-size:1.6rem}.nf .lede{margin:0 auto 1.25rem;max-width:34rem}.nf-path{margin:0 0 1.5rem;font-size:13px;color:var(--text-faint)}.nf-path code{padding:2px 8px;background:var(--bg-soft);border:1px solid var(--border);border-radius:6px;color:var(--text-soft);font-family:var(--mono);word-break:break-all}.nf-actions{margin:0}.nf-home{display:inline-block;padding:.55rem 1.4rem;background:var(--accent);border-radius:999px;color:#fff;font-weight:600}.nf-home:hover{filter:brightness(1.06);text-decoration:none}.nf-spaces-label{margin:2.25rem 0 0;text-align:center;font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text-faint)}.nb-nav-toggle,.nb-cmt-sheet-btn,.toc-inline,.drawer-util{display:none}.nb-scrim{position:fixed;inset:0;z-index:100;background:#00000073;border:none}@media(max-width:1024px){.shell{grid-template-columns:minmax(0,1fr)}.rail{display:none}.nb-nav-toggle{display:inline-flex;align-items:center;justify-content:center;padding:6px;margin-left:-4px;background:none;border:none;border-radius:var(--radius);color:var(--text);cursor:pointer}.nb-nav-toggle:hover{background:var(--accent-soft)}.topbar-util{display:none}.nb-cmt-sheet-btn{display:inline-flex;align-items:center;gap:4px;margin-left:auto;padding:5px 11px;background:none;border:1px solid var(--border);border-radius:999px;color:var(--text-soft);font-size:13px;white-space:nowrap;cursor:pointer}.nb-cmt-sheet-count:empty{display:none}.sidebar{position:fixed;top:0;left:0;bottom:0;width:min(84vw,320px);height:100dvh;z-index:110;transform:translate(-100%);transition:transform .22s ease;border-right:1px solid var(--border);padding-top:calc(env(safe-area-inset-top) + .75rem);will-change:transform}.sidebar.nb-open{transform:translate(0);box-shadow:0 0 40px #0000004d}.drawer-util{display:flex;flex-direction:column;gap:2px;margin-top:1rem;padding-top:1rem;border-top:1px solid var(--border)}.drawer-link{padding:10px 8px;font-size:14px;font-weight:600;color:var(--text-soft);border-radius:6px}.drawer-link:hover{background:var(--accent-soft);text-decoration:none}.drawer-me{display:flex;align-items:center;gap:6px;margin-top:6px;padding:6px 8px}.drawer-me input{flex:1;min-height:40px;padding:6px 10px;font-size:16px;color:var(--text);background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius)}.toc-inline{display:block;max-width:var(--content-max);margin:0 auto 1.25rem;padding:0 .9rem;background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius)}.toc-inline>summary{padding:.6rem 0;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-faint);list-style:none;cursor:pointer}.toc-inline>summary::-webkit-details-marker{display:none}.toc-inline .toc-title{display:none}.toc-inline .toc-inner{padding-bottom:.6rem}.rail.nb-sheet,#cmt-pop:not([hidden]),#cmt-view:not([hidden]){position:fixed;inset:auto 0 var(--nb-kb, 0px) 0;width:auto;max-width:none;max-height:85svh;z-index:110;border:1px solid var(--border);border-bottom:none;border-radius:14px 14px 0 0;box-shadow:0 -8px 28px #00000047;padding-bottom:calc(env(safe-area-inset-bottom) + 12px);overflow-y:auto;overscroll-behavior:contain;touch-action:pan-y}.rail.nb-sheet{display:block;padding:12px 14px calc(env(safe-area-inset-bottom) 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