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16px;display:grid;position:relative}.vp-edges{pointer-events:none;z-index:-1;width:100%;height:100%;position:absolute;inset:0;overflow:visible}.vp-edge{fill:none;stroke:var(--hairline);stroke-width:1.4px}.vp-edge[data-active=true]{stroke:var(--accent);stroke-width:1.8px}.vp-flow-dot{fill:var(--accent);opacity:0}.vp-flow-dot.active{opacity:1}.vp-edge-label{fill:var(--muted);font-size:10px}.vp-actor{border:1px solid var(--hairline);background:var(--surface);text-align:center;border-radius:9px;flex-direction:column;align-items:center;width:100%;min-width:0;min-height:160px;padding:19px 10px 13px;line-height:1.55;transition:border-color .25s,background .25s,box-shadow .25s;display:flex;position:relative}.vp-actor[data-active=true]{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 8%,transparent)}.vp-actor:hover{border-color:var(--accent)}.vp-actor small{letter-spacing:1.5px;color:var(--muted);margin-bottom:8px;font:10px 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button[aria-selected=true]{color:var(--accent-text);font-weight:650}.vp-inspector-tabs button[aria-selected=true]:after{content:"";background:var(--accent);height:2px;position:absolute;bottom:-1px;left:0;right:0}.vp-inspector-body{scrollbar-width:thin;flex:1;min-height:277px;max-height:322px;padding:19px 0 16px;overflow-y:auto}.vp-inspector-step{letter-spacing:1px;color:var(--accent-text);margin-bottom:13px;font:11px ui-monospace,Consolas,monospace}.vp-inspector h3{letter-spacing:-.5px;min-height:28px;font-size:17px;font-weight:620;line-height:1.6}.vp-inspector p{color:var(--muted);margin-top:11px;font-size:13px;line-height:1.9}.vp-insight{border-top:1px solid var(--hairline);color:var(--accent-text);align-items:flex-start;gap:7px;margin-top:16px;padding-top:12px;font-size:11px;line-height:1.7;display:flex}.vp-insight svg{margin-top:2px}.vp-context-row{border-bottom:1px solid var(--hairline);padding:10px 0}.vp-context-row:first-child{padding-top:0}.vp-context-row>span{color:var(--accent-text);margin-bottom:5px;font:10px ui-monospace,Consolas,monospace;display:block}.vp-context-row>div{overflow-wrap:anywhere;white-space:pre-line;font-size:11px;line-height:1.8}.vp-context-footnote{font-size:10px!important}.vp-trace-row{border-bottom:1px solid var(--hairline);grid-template-columns:21px 1fr;gap:6px;padding:8px 0;font-size:11px;display:grid}.vp-trace-row>span{color:var(--muted);padding-top:2px;font:10px ui-monospace,Consolas,monospace}.vp-trace-row strong{color:var(--accent-text);font-size:10px;font-weight:550}.vp-trace-row p{color:var(--ink);margin-top:3px;font-size:11px;line-height:1.6}.vp-trace-row code{color:var(--muted);overflow-wrap:anywhere;white-space:pre-line;margin-top:3px;font-size:9px;line-height:1.7;display:block}.vp-phase-rail{border-top:1px solid var(--hairline);grid-template-columns:repeat(7,minmax(0,1fr));gap:2px;margin:17px 0 0;padding:13px 0 10px;display:grid}.vp-phase-rail button{color:var(--muted);text-align:center;white-space:nowrap;background:0 0;flex-direction:column;align-items:center;gap:5px;padding:5px 0;font-size:10px;line-height:1.5;display:flex;position:relative}.vp-phase-rail button:before{content:"";background:0 0;height:2px;position:absolute;top:-14px;left:0;right:0}.vp-phase-rail button[aria-current=step]{color:var(--accent-text);font-weight:650}.vp-phase-rail button[aria-current=step]:before{background:var(--accent)}.vp-phase-rail button.done:before{background:color-mix(in srgb,var(--accent) 36%,var(--hairline))}.vp-phase-rail button span{font:10px/1 ui-monospace,Consolas,monospace}.vp-lab-controls{border-top:1px solid var(--hairline);background:var(--surface);align-items:center;gap:8px;padding:13px 20px;display:flex}.vp-step-count{font-variant-numeric:tabular-nums;min-width:62px;font:13px ui-monospace,Consolas,monospace}.vp-step-count strong{color:var(--accent-text);font-size:20px;font-weight:550}.vp-step-count span{color:var(--muted);margin-left:4px}.vp-sim-metrics{color:var(--muted);gap:16px;margin-left:9px;font-size:11px;display:flex}.vp-sim-metrics b{color:var(--ink);font-variant-numeric:tabular-nums;margin-left:5px;font-weight:600}.vp-lab-buttons{align-items:center;gap:7px;margin-left:auto;display:flex}.vp-button{border:1px solid var(--hairline);white-space:nowrap;background:0 0;border-radius:6px;justify-content:center;align-items:center;gap:8px;min-height:39px;padding:9px 15px;font-size:12px;font-weight:550;line-height:1.5;display:inline-flex}.vp-button:hover:not(:disabled){background:var(--tint);border-color:var(--accent)}.vp-button-primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.vp-button-primary:hover:not(:disabled){background:var(--accent-strong);color:var(--accent-ink)}.vp-play{border-color:#0000;gap:6px}.vp-speed{color:var(--muted);background:0 0;border:0;min-width:34px;min-height:36px;font:11px ui-monospace,Consolas,monospace}.vp-lab-notice{color:var(--muted);justify-content:space-between;align-items:center;gap:10px;padding:10px 0 0;font-size:11px;display:flex}.vp-lab-notice>span{align-items:center;gap:6px;display:flex}.vp-live-dot{background:var(--accent);border-radius:50%;width:5px;height:5px}.vp-live-dot.stopped{background:var(--muted)}.vp-toc{z-index:30;background:color-mix(in srgb,var(--bg) 96%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline);scrollbar-width:none;align-items:center;gap:29px;margin:36px 0 0;padding:16px 0;font-size:12px;display:flex;position:sticky;top:65px;overflow-x:auto}.vp-toc a{white-space:nowrap;color:var(--muted);align-items:center;gap:7px;display:flex}.vp-toc a>span{font:10px ui-monospace,Consolas,monospace}.vp-toc a.active,.vp-toc a:hover{color:var(--accent-text)}.vp-toc .vp-toc-top{margin-left:auto;font-size:11px}.vp-chapter{border-bottom:1px solid var(--hairline);grid-template-columns:176px minmax(0,1fr);gap:45px;padding:61px 0 59px;scroll-margin-top:145px;display:grid}.vp-chapter-label{color:var(--accent-text);align-items:baseline;gap:11px;padding-top:6px;font-size:12px;display:flex}.vp-chapter-label>span{color:var(--muted);font:12px ui-monospace,Consolas,monospace}.vp-chapter-content{min-width:0}.vp-chapter h2{letter-spacing:-1px;font-size:30px;font-weight:650;line-height:1.55}.vp-chapter h2 em{color:var(--accent-text);font-style:normal}.vp-chapter-content>p{color:var(--muted);max-width:755px;margin-top:16px;font-size:15px;line-height:1.95}.vp-chapter-content>p strong{color:var(--ink);font-weight:600}.vp-chapter-content>p code{background:var(--tint);color:var(--accent-text);border-radius:3px;padding:2px 5px;font-size:13px}.vp-source-inline{color:var(--accent-text);vertical-align:super;margin-left:4px;font-size:10px}.vp-source-inline:hover{text-decoration:underline}.vp-contrast{grid-template-columns:1fr 1fr;gap:25px;margin-top:29px;display:grid}.vp-contrast-col{border-top:1px solid var(--hairline);padding-top:15px}.vp-contrast-col h3{align-items:center;gap:8px;font-size:14px;font-weight:600;display:flex}.vp-contrast-col h3 small{letter-spacing:.3px;color:var(--muted);font-size:10px;font-weight:450}.vp-contrast-col:last-child h3{color:var(--accent-text)}.vp-mini-flow{color:var(--muted);flex-wrap:wrap;align-items:center;gap:10px;margin-top:19px;font-size:13px;display:flex}.vp-mini-flow b{border:1px solid var(--hairline);color:var(--ink);border-radius:4px;padding:6px 13px;font-size:13px;font-weight:500}.vp-contrast-col:last-child .vp-mini-flow b{background:var(--tint);border-color:color-mix(in srgb,var(--accent) 28%,var(--hairline));color:var(--accent-text)}.vp-contrast-col p{color:var(--muted);margin-top:15px;font-size:13px;line-height:1.9}.vp-pullquote{color:var(--accent-text);border-top:1px dashed var(--hairline);margin-top:26px;padding-top:17px;font-size:16px;font-weight:500}.vp-anatomy{border:1px solid var(--hairline);background:var(--surface);border-radius:9px;grid-template-columns:228px minmax(0,1fr);margin-top:26px;display:grid;overflow:hidden}.vp-parts{border-right:1px solid var(--hairline);flex-direction:column;padding:8px 0;display:flex}.vp-part{text-align:left;background:0 0;border:0;align-items:center;gap:11px;padding:15px 17px;display:flex}.vp-part>span{color:var(--muted);font:10px ui-monospace,Consolas,monospace}.vp-part strong{font-size:13px;font-weight:550}.vp-part small{color:var(--muted);margin-top:2px;font-size:10px;font-weight:400;display:block}.vp-part[aria-selected=true]{background:var(--tint);color:var(--accent-text)}.vp-part-detail .vp-part-en{letter-spacing:1px;color:var(--accent-text);margin-bottom:10px;font:10px ui-monospace,Consolas,monospace}.vp-part-detail p{color:var(--muted);margin-top:12px;font-size:13px;line-height:1.9}.vp-part-example{color:var(--accent-text);background:var(--tint);white-space:pre-wrap;overflow-wrap:anywhere;border-radius:5px;margin-top:16px;padding:12px 14px;font:12px/1.85 ui-monospace,Consolas,monospace}.vp-note{color:var(--muted)!important;margin-top:17px!important;font-size:12px!important}.vp-code-details{border-top:1px solid var(--hairline);border-bottom:1px solid var(--hairline);margin-top:24px}.vp-code-details summary{cursor:pointer;color:var(--accent-text);justify-content:space-between;align-items:center;padding:16px 0;font-size:13px;list-style:none;display:flex}summary::-webkit-details-marker{display:none}.vp-code-details summary>span{align-items:center;gap:9px;display:flex}.vp-code-panel{background:var(--code-bg);color:var(--code-ink);border-radius:8px;margin:0 0 20px;padding:25px 24px;position:relative}.vp-code-panel pre{white-space:pre-wrap;tab-size:4;margin:0;font-size:12px;line-height:1.9}.vp-code-panel .vp-code-note{color:color-mix(in srgb,var(--code-ink) 67%,transparent);border-top:1px solid #ffffff20;margin-top:17px;padding-top:14px;font-size:11px}.vp-copy{color:var(--code-ink);background:#ffffff0c;border:1px solid #ffffff20;border-radius:4px;padding:7px 10px;font-size:11px;position:absolute;top:12px;right:12px}.vp-code-key{color:#b6cc78}.vp-code-comment{color:#98a18f}.vp-compare-table{border-collapse:collapse;text-align:left;width:100%;margin-top:21px;font-size:14px}.vp-compare-table th,.vp-compare-table td{border-bottom:1px solid var(--hairline);vertical-align:top;padding:17px 0}.vp-compare-table thead th{color:var(--muted);padding-bottom:11px;font-size:11px;font-weight:450}.vp-compare-table th:first-child{width:155px;padding-right:22px}.vp-compare-table tbody th{font-weight:550}.vp-compare-table td{color:var(--muted);font-size:13px}.vp-compare-table tr.is-harness,.vp-compare-table 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