.shell--lab:has(.lab-workspace){max-width:1760px;padding-inline:48px}.lab-workspace{--lab-line:color-mix(in srgb, var(--ink) 14%, transparent);--lab-frame:var(--hairline);--lab-surface:color-mix(in srgb, var(--ink) 4.5%, transparent)}.lab-workspace button{cursor:pointer}.lab-workspace button:disabled{cursor:default;opacity:.35}.lab-workspace :is(button,[role=separator],[tabindex="0"]):focus-visible{outline:2px solid var(--accent);outline-offset:3px}.lab-workspace [lang=zh]{letter-spacing:0;text-transform:none}.lab-ui-icon{fill:none;stroke:currentColor;stroke-width:1.25px;flex:none;width:16px;height:16px}.lab-workspace-grid{grid-template-columns:36px 24px minmax(0,1fr);align-items:start;display:grid}.lab-workspace[data-nav-open] .lab-workspace-grid{grid-template-columns:var(--lab-nav-width) 32px minmax(0, 1fr)}.lab-sidebar{grid-column:1;align-self:stretch;min-width:0;padding-top:40px}.lab-sidebar-sticky{position:sticky;top:24px}.lab-directory-toggle{border:1px solid var(--accent);background:var(--lab-surface);width:100%;min-height:40px;color:var(--ink);justify-content:space-between;align-items:center;gap:8px;padding:0 10px;display:flex}.lab-directory-label{letter-spacing:.1em;text-transform:uppercase;align-items:baseline;gap:10px;font-size:11px;font-weight:700;display:flex}.lab-directory-label [lang=zh]{color:var(--n600);font-size:11px;font-weight:500}.lab-workspace:not([data-nav-open]) .lab-directory-toggle{justify-content:center;padding:0}.lab-workspace:not([data-nav-open]) .lab-directory-label{display:none}.lab-layout-reset{min-height:36px;color:var(--n600);align-items:center;gap:8px;margin-top:12px;font-size:11px;display:inline-flex}.lab-sidebar .lab-index{scrollbar-width:thin;scrollbar-color:var(--n400) transparent;overscroll-behavior-y:contain;gap:16px;max-height:calc(100dvh - 184px);padding:0 8px 8px 0;position:relative;top:auto}.lab-sidebar .lab-index::-webkit-scrollbar{width:4px;display:block}.lab-sidebar .lab-index__rule,.lab-sidebar .lab-index__foot,.lab-sidebar .lab-index__head{display:none}.lab-sidebar .lab-index__project{letter-spacing:.1em;margin-top:24px;margin-bottom:8px}.lab-sidebar .lab-index__group:first-child .lab-index__project{margin-top:16px}.lab-sidebar .lab-index__project-sub{letter-spacing:.08em;margin-top:4px;font-size:9px}.lab-sidebar .lab-index__scale{letter-spacing:.08em;margin-block:8px;font-weight:600}.lab-sidebar .lab-index__item{padding-block:8px;line-height:1.4}.lab-sidebar .lab-index__title{font-size:12px}.lab-sidebar .lab-index__no{letter-spacing:.02em;font-weight:600}.lab-sidebar .lab-index__item:before{background-image:none}.lab-nav-divider{grid-column:2;align-self:stretch;padding-top:48px}.lab-nav-divider>.lab-splitter{height:calc(100dvh - 72px);position:sticky;top:24px}.lab-workspace-grid>.lab-main{grid-column:3;min-width:0}.lab-page-intro{padding-block:48px 40px!important}.lab-page-intro>p{color:var(--n700)}.lab-title-line{justify-content:space-between;align-items:center;gap:24px;display:flex}.lab-language-switch{flex:none}.lab-language-switch .lang-switch{min-height:42px}.lab-language-switch .lang-switch__opt{min-width:80px;min-height:42px;font-size:15px}.lab-language-root[data-lang=zh] :is(.lab-panel-title h2,.lab-panel-number,.lab-index__project,.lab-index__scale,.lab-details-head,.lab-details h3){letter-spacing:.02em;text-transform:none}@media (max-width:600px){.lab-title-line{flex-wrap:wrap;gap:20px}.lab-language-switch .lang-switch__opt{min-width:72px}}.lab-panel-anchor{margin-top:32px;scroll-margin-top:24px}.lab-panel{--lab-figure-height:min(58dvh, 520px);border-bottom:1px solid var(--lab-frame);padding-bottom:48px;container-type:inline-size}.lab-panel-heading{grid-template-columns:minmax(0,1fr) auto;gap:12px 24px;padding:16px 0 24px;display:grid}.lab-panel-number{letter-spacing:.14em;color:var(--lab-tone);grid-column:1/-1;align-items:center;gap:8px;font-size:12px;font-weight:800;line-height:1;display:flex}.lab-live-dot{background:currentColor;width:6px;height:6px}.lab-panel-title{min-width:0}.lab-panel-title h2{letter-spacing:-.01em;text-transform:uppercase;text-wrap:balance;margin:0;font-size:26px;font-weight:800;line-height:1.05}.lab-panel-title p{max-width:62ch;color:var(--n600);margin:12px 0 0;font-size:13px;line-height:1.6}.lab-panel-actions{align-items:flex-start;gap:8px;display:flex}.lab-panel-actions button{border:1px solid var(--lab-frame);letter-spacing:.04em;white-space:nowrap;justify-content:flex-start;align-items:center;gap:8px;min-height:36px;padding:8px 12px;font-size:11px;font-weight:600;display:inline-flex}.lab-panel-actions button [lang=zh]{color:var(--n600);font-size:10px}.lab-panel-actions button[data-on]{background:var(--surface)}.lab-panel-actions .lab-expand{border-color:color-mix(in srgb, var(--lab-tone) 55%, transparent);color:var(--lab-tone)}.lab-panel-body{grid-template-columns:minmax(0,1fr) 0 0;align-items:stretch;display:grid}.lab-panel[data-details] .lab-panel-body{grid-template-columns:minmax(0, 1fr) 32px var(--lab-detail-width)}.lab-stage-column{border:1px solid var(--lab-frame);border-top:3px solid var(--lab-tone);background:var(--lab-surface);grid-column:1;align-self:start;min-width:0}.lab-stage{min-width:0}.lab-stage .lab-wrap{background:0 0}.lab-stage .lab-fig>:is(canvas,svg){max-width:calc(var(--lab-figure-height) * 700 / 520);margin-inline:auto}.lab-stage .layer-study .lab-fig>:is(canvas,svg){max-width:calc(var(--lab-figure-height) * 700 / 440)}.lab-stage .lab-fig :is(canvas,svg){height:auto}.lab-panel:not([data-expanded]) .lab-fig :is(canvas,svg){touch-action:pan-y pinch-zoom!important}.lab-stage :is(.lab-ctl,.lab-ctl__row){letter-spacing:.02em;justify-content:center;gap:12px 0;padding:12px 8px;font-size:11px;font-weight:600}.lab-stage .lab-ctl--tiered{gap:0;padding:0}.lab-stage .lab-ctl .grp{border-left-color:var(--lab-line);flex-wrap:wrap;gap:8px;min-width:0;max-width:100%;padding:0 12px}.lab-stage .lab-ctl .seg{flex-wrap:wrap;max-width:100%}.lab-stage .lab-ctl button{letter-spacing:0;min-height:28px;font-weight:600}.lab-stage .lab-ctl input[type=range]{max-width:100%}.lab-stage .lab-hud{letter-spacing:.04em;font-weight:600}.lab-stage .lab-hud .dim{opacity:.65}.lab-view-tools{border-top:1px solid var(--lab-line);justify-content:space-between;align-items:center;gap:8px;min-height:48px;padding:8px 16px;display:flex}.lab-view-tools p{color:var(--n600);margin:0;font-size:11px;line-height:1.5}.lab-touch-note{display:none}.lab-zoom-controls{gap:4px;display:flex}.lab-zoom-controls button{border:1px solid var(--lab-frame);justify-content:center;align-items:center;min-width:32px;min-height:28px;padding:4px 8px;font-size:11px;display:inline-flex}.lab-detail-divider{grid-column:2}.lab-details{min-width:0;max-height:calc(var(--lab-figure-height) + 220px);flex-direction:column;grid-column:3;display:flex;position:relative}.lab-details[hidden],.lab-detail-divider[hidden],.lab-nav-divider[hidden]{display:none}.lab-details-head{border-bottom:1px solid var(--lab-line);letter-spacing:.1em;min-height:44px;color:var(--n600);justify-content:space-between;align-items:center;gap:8px;padding:3px 0 12px;font-size:10px;font-weight:600;display:flex}.lab-details-scroll{scrollbar-width:thin;scrollbar-color:var(--n400) transparent;overscroll-behavior-y:contain;padding:16px 8px 4px 0;position:relative;overflow-y:auto}.lab-description{max-width:62ch;color:var(--n700);margin:0;font-size:14px;line-height:1.6}.lab-details h3{letter-spacing:.1em;text-transform:uppercase;color:var(--n600);margin:32px 0 12px;font-size:10px;font-weight:600}.lab-details dl{margin:0}.lab-details dl>div{border-top:1px solid var(--lab-line);grid-template-columns:92px minmax(0,1fr);gap:12px;padding:8px 0;display:grid}.lab-details dl>div:last-child{border-bottom:1px solid var(--lab-line)}.lab-details dt{letter-spacing:.06em;text-transform:uppercase;color:var(--n600);margin:0;padding-top:2px;font-size:10px;font-weight:600;line-height:1.5}.lab-details dd{overflow-wrap:anywhere;color:var(--ink);margin:0;font-size:12px;line-height:1.6}.lab-splitter{cursor:col-resize;touch-action:none;-webkit-user-select:none;user-select:none;height:100%;min-height:100px;color:var(--n500);justify-content:center;align-items:center;display:flex;position:relative}.lab-splitter:before{content:"";background:var(--lab-line);width:1px;position:absolute;top:0;bottom:0}.lab-splitter span{background:var(--paper);justify-content:center;align-items:center;width:12px;height:32px;display:flex;position:relative}.lab-splitter span:before{content:"";border-inline:1px 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.lab-panel-heading{padding-block:12px}.lab-view-tools{flex-wrap:wrap}}@media (hover:hover) and (pointer:fine){.lab-directory-toggle:hover,.lab-layout-reset:hover{color:var(--accent)}.lab-workspace :is(.lab-detail-size,.lab-zoom-controls) button:hover:not(:disabled){color:var(--accent);border-color:var(--accent)}.lab-panel-actions button:hover{color:var(--lab-tone);border-color:var(--lab-tone);background:var(--surface)}}:is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) .walk-map{display:contents}:is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) .walk-notes{color:var(--n700);font-size:13px;line-height:1.75}:is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) .walk-notes h3{color:var(--ink);letter-spacing:.04em;margin-top:0;font-size:11px}:is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) 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.seg{grid-auto-columns:minmax(0,1fr);grid-auto-flow:column;display:grid}[data-lab-panel="2-14"] .walk-workbench .lab-ctl__solve .seg button{white-space:normal;line-height:1.25}[data-lab-panel="2-14"] .walk-workbench .lab-ctl__solve .seg{width:100%}.lab-workspace :is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) .walk-workbench .lab-ctl .lab-fold__body{flex-direction:column;align-items:stretch;gap:0;padding-top:0}.lab-workspace :is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) .walk-workbench .lab-ctl .lab-fold__body>.grp:last-child{border-bottom:0}:is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) .walk-workbench>.lab-ctl{display:contents}:is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) .lab-fig{grid-area:1/1;grid-template-rows:auto minmax(0,1fr) auto auto;min-width:0;min-height:0;padding:14px 14px 10px;display:grid}:is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) .walk-map{grid-row:2;min-width:0;min-height:0;display:block;position:relative;overflow:hidden;container-type:size}:is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) .walk-map canvas{width:min(140cqw,145.833cqh);max-width:none;height:auto;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}:is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) .lab-hud{letter-spacing:.01em;max-width:none;font-size:10px;line-height:1.6;position:static}:is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) .lab-hud.tl{grid-row:1;padding-bottom:6px}:is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) 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var(--lab-line);border-bottom:0;flex-flow:column;grid-area:1/2;justify-content:space-evenly;align-items:stretch;gap:0;min-height:0;padding:8px 12px;display:flex}:is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) .lab-ctl__solve .grp{border:0;border-bottom:1px solid var(--lab-line);flex:none;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:6px;padding:5px 0;display:grid}:is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) .lab-ctl__solve .grp:last-child{border-bottom:0}:is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) .lab-ctl__solve .grp.walk-behaviour{grid-template-columns:minmax(0,1fr)}:is([data-lab-panel="2-10"],[data-lab-panel="2-11"],[data-lab-panel="2-12"],[data-lab-panel="2-14"]) .walk-behaviour .seg{grid-template-columns:repeat(3,minmax(0,1fr));display:grid}[data-lab-panel="2-11"] .crowd-people 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