/* Instruments: a black frame, a white reading surface, one yellow signal. */
.scenario.lab-panel{--accent:#FFD400;padding:0;margin:64px 0;background:#fff;color:#000;border:3px solid #000;border-radius:0;overflow:hidden;box-shadow:none}
.lab-header{display:grid;grid-template-columns:100px minmax(0,1fr) auto;align-items:stretch;border-bottom:3px solid #000;padding:0;gap:0}
.lab-header>div{min-width:0}
.lab-index{display:grid;place-items:center;align-self:stretch;background:#FFD400;color:#000;border-right:3px solid #000;padding:20px 12px;font:72px/1 var(--display)}
.lab-header>div:not(.lab-index){padding:24px 26px}
.lab-header .eyebrow{font:700 11px/1.5 var(--body);color:#444;letter-spacing:1.2px;margin:0 0 10px}
.lab-header h2{font:400 39px/1.08 var(--display);text-transform:uppercase;letter-spacing:0;margin:0;overflow-wrap:anywhere}
.lab-type{display:flex;align-items:center;max-width:130px;border-left:2px solid #000;padding:20px;font:700 11px/1.5 var(--body);text-transform:uppercase;letter-spacing:1px}
.lab-intro{margin:0;padding:23px 30px;max-width:950px;font:16px/1.65 var(--body);color:#333}
.lab-workbench{display:grid;grid-template-columns:minmax(0,1.75fr) minmax(260px,1fr);border-block:3px solid #000}
.lab-stage{margin:0;min-width:0;position:relative;background:#000;color:#fff;padding:24px 25px;color-scheme:dark}
.lab-stage-heading{display:flex;justify-content:space-between;align-items:center;gap:14px;padding-bottom:15px;border-bottom:1px solid #555;font:650 12px/1.45 var(--body)}
.lab-stage-heading>span{min-width:0}
.lab-stage-heading>span:first-child{color:#fff}
.lab-status{display:inline-block;flex-shrink:0;border:1px solid #fff;padding:7px 9px;background:#000;color:#fff;font:650 10px/1.4 var(--body)}
.lab-status:before{content:'';display:inline-block;width:6px;height:6px;background:#FFD400;margin-right:7px}
.lab-status.warning{color:#000;background:#FFD400;border-color:#FFD400}
.lab-status.warning:before{background:#000}
.lab-stage figcaption{font:12px/1.65 var(--body);color:#bbb;border-top:1px solid #555;padding-top:15px}
.lab-panel .model-graphic{height:auto;min-height:0;margin:12px 0;display:block;width:100%}
.lab-diagram{display:block;width:100%;height:auto;overflow:visible;font-family:var(--body);color:#fff;background:#000}
.lab-diagram text{fill:currentColor}
.diagram-label{font-size:11px;font-weight:650;letter-spacing:1px;fill:#bbb!important}
.diagram-small,.axis-label{font-size:13px;font-weight:450;fill:#ccc!important}
.diagram-value{font-size:16px;font-weight:650}
.diagram-wire{stroke:#fff;stroke-width:2;fill:none;stroke-linecap:square}
.diagram-flow{stroke:#FFD400;stroke-width:4;fill:none}
.diagram-node{stroke:#fff;stroke-width:2;fill:#000}
.generator-blades{stroke:#FFD400;stroke-width:3;fill:none}
.solid-accent{fill:#FFD400}
.junction{fill:#FFD400;stroke:#000;stroke-width:2}
.building{stroke:#fff;stroke-width:2;fill:#000}
.diagram-rule{stroke:#555}
.chart-track{fill:#000;stroke:#666;stroke-width:1}
.chart-response{fill:#fff}
.chart-warning{fill:#FFD400;stroke:#fff;stroke-width:2}
.chart-threshold{stroke:#fff;stroke-width:1;stroke-dasharray:4 4;fill:none}
.chart-grid{stroke:#666;stroke-width:1;fill:none}
.chart-cursor{stroke:#fff;stroke-width:1;stroke-dasharray:4 4}
.chart-point{fill:#FFD400;stroke:#000;stroke-width:3}
.water-pipe{stroke:#fff;stroke-width:7;fill:none;stroke-linejoin:miter}
.failure-mark{stroke:#FFD400;stroke-width:3;stroke-linecap:square;fill:none}
.tank-outline{stroke:#fff;stroke-width:2;fill:#000}
.water-volume{fill:#FFD400}
.water-surface{stroke:#fff;stroke-width:2}
.tank-reading{font:44px var(--display);fill:#fff;paint-order:stroke;stroke:#000;stroke-width:5px;stroke-linejoin:round}
.lab-diagram .tank-unit{fill:#fff!important;paint-order:stroke;stroke:#000;stroke-width:3px;stroke-linejoin:round}
.storage-curve{stroke:#FFD400;stroke-width:3;fill:none;stroke-linecap:square;stroke-linejoin:miter}
.network-idle{stroke:#fff;stroke-width:2;fill:none;stroke-dasharray:7 6}
.network-selected{stroke:#FFD400;stroke-width:4;fill:none;stroke-linecap:square}
.packet-flow{stroke:#fff;stroke-width:5;stroke-dasharray:1 40;stroke-linecap:square;fill:none;animation:lab-packet 5s linear infinite}
.network-failed{stroke:#fff;stroke-width:2;stroke-dasharray:4 6;fill:none}
.failure-disc{fill:#000;stroke:#FFD400;stroke-width:2}
.router-body{fill:#000;stroke:#fff;stroke-width:2}
.router-ports{stroke:#FFD400;stroke-width:3}
.router-letter{font:26px var(--display)}
.route-label{font-size:13px;fill:#ccc!important}
.track-rail{stroke:#fff;stroke-width:2}
.track-sleeper{stroke:#fff;stroke-width:2}
.train-body{fill:#FFD400;stroke:#fff;stroke-width:1}
.train-window{fill:#000}
.train-detail{stroke:#000;stroke-width:1}
.train-wheel{fill:#fff;stroke:#000;stroke-width:2}
.platform{fill:#fff}
.interval-line{stroke:#fff;stroke-width:1;stroke-dasharray:3 3}
.timeline-baseline{fill:#fff}
.timeline-grid{stroke:#666;stroke-width:1}

/* Input and response are separate, numbered stations on the panel. */
.lab-controls{padding:28px;min-width:0;background:#fff;border-left:3px solid #000}
.lab-control-step{display:block;font:750 11px/1.5 var(--body);text-transform:uppercase;letter-spacing:1.3px;color:#000}
.lab-controls label{display:block;font:600 18px/1.4 var(--body);margin:25px 0 10px}
.lab-readout{display:flex;flex-wrap:wrap;align-items:baseline;min-width:0;gap:12px;margin:0 0 18px}
.lab-readout .range-value{font:400 78px/1 var(--display);letter-spacing:0;color:#000;display:block;margin:0;min-height:0}
.lab-unit{font:500 18px/1.4 var(--body);color:#444}
.lab-controls:has(.lab-switch) .range-value{font:400 40px/1.1 var(--display);letter-spacing:0;text-transform:uppercase}
.lab-panel input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:44px;min-height:44px;margin:0;padding:0;background:transparent;border:0;border-radius:0;cursor:pointer;accent-color:#000}
.lab-panel input[type=range]::-webkit-slider-runnable-track{height:6px;border-radius:0;background:linear-gradient(to right,#000 0 var(--range-progress,50%),#aaa var(--range-progress,50%) 100%)}
.lab-panel input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;box-sizing:border-box;width:28px;height:28px;margin-top:-11px;border-radius:0;background:#FFD400;border:3px solid #000;box-shadow:none}
.lab-panel input[type=range]::-moz-range-track{height:6px;border-radius:0;background:#aaa}
.lab-panel input[type=range]::-moz-range-progress{height:6px;border-radius:0;background:#000}
.lab-panel input[type=range]::-moz-range-thumb{width:22px;height:22px;border-radius:0;background:#FFD400;border:3px solid #000}
.lab-panel .range-ends{font:600 11px/1.5 var(--body);color:#444;margin:0 0 18px;display:flex;justify-content:space-between}
.lab-presets{display:flex;gap:7px;flex-wrap:wrap;margin:20px 0}
.lab-presets button{border:2px solid #000;background:#fff;color:#000;border-radius:0;padding:9px 11px;font:650 11px/1.35 var(--body);cursor:pointer;min-height:44px}
.lab-presets button:hover{background:#FFD400}
.lab-presets button[aria-pressed=true]{background:#000;border-color:#000;color:#FFD400}
.lab-switch{display:grid;grid-template-columns:1fr;gap:9px}
.lab-switch button{text-align:left;padding:12px 13px;font-size:13px}
.lab-switch button:before{content:'';display:inline-block;width:9px;height:9px;border:2px solid currentColor;margin-right:10px}
.lab-switch button[aria-pressed=true]:before{background:#FFD400;border-color:#FFD400}
.lab-hint{font:14px/1.65 var(--body);color:#444;margin:18px 0}
.lab-panel .reset-scenario{display:flex;gap:15px;align-items:center;font:650 12px/1.4 var(--body);color:#000;text-decoration:underline;text-underline-offset:4px;border:0;border-radius:0;padding:10px 0;min-height:44px;background:transparent;cursor:pointer}
.reset-scenario span{font-size:21px}
.lab-observation{padding:28px 30px 30px;background:#fff}
.lab-result-heading{display:flex;align-items:baseline;justify-content:space-between;gap:20px}
.lab-comparison{font:12px/1.6 var(--body);color:#444;overflow-wrap:anywhere}
.lab-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin:24px 0;border-block:2px solid #000;padding:22px 0;gap:22px}
.lab-metric{min-width:0;border-right:2px solid #000;padding-right:20px}
.lab-metric:last-child{border:0;padding:0}
.lab-metric dt{font:650 12px/1.4 var(--body);color:#444;margin:0 0 12px}
.lab-metric dd{font:400 64px/1 var(--display);letter-spacing:0;color:#000;margin:0;overflow-wrap:anywhere}
.lab-metric dd.metric-text{font:650 25px/1.25 var(--body);letter-spacing:-.4px}
.lab-metric dd span{display:block;font:500 11px/1.5 var(--body);letter-spacing:0;color:#444;margin-top:10px}
.lab-panel .lab-result{background:#000;border:0;padding:26px;display:grid;grid-template-columns:1fr 1.8fr;gap:30px;min-width:0;min-height:0}
.lab-panel .lab-result strong{display:block;font:400 31px/1.12 var(--display);text-transform:uppercase;letter-spacing:0;margin:0;color:#FFD400;overflow-wrap:anywhere}
.lab-panel .lab-result p{font:15px/1.75 var(--body);margin:0;color:#fff}
.lab-assumptions{border-top:3px solid #000;background:#fff}
.lab-assumptions>summary{display:flex;justify-content:space-between;align-items:center;gap:15px;cursor:pointer;padding:19px 30px;min-height:56px;list-style:none;background:#FFD400;color:#000;font:750 13px/1.5 var(--body)}
.lab-assumptions>summary::-webkit-details-marker{display:none}
.lab-assumptions>summary>span:last-child{font:550 12px/1.5 var(--body);color:#000}
.lab-assumptions summary i{display:inline-block;font-style:normal;margin-left:24px;font-size:24px;line-height:1}
.lab-assumptions[open] summary{border-bottom:2px solid #000}
.lab-assumptions[open] summary i{transform:rotate(45deg)}
.lab-panel .scenario-limits{margin:0;border:0;background:#fff;padding:24px 30px}
.lab-panel .scenario-limits p,.lab-panel .scenario-limits li{font:14px/1.8 var(--body);color:#333}
.lab-panel .scenario-limits ul{columns:2;column-gap:45px;padding-left:18px}
.lab-panel .scenario-limits li{break-inside:avoid;margin-bottom:9px}
.lab-panel .scenario-limits .small{font-size:12px}
.lab-panel .scenario-limits a{text-decoration:underline;text-underline-offset:3px;overflow-wrap:anywhere}
.lab-panel :is(button,input,summary):focus-visible{outline:3px solid #000;outline-offset:4px}
.lab-stage :is(button,[tabindex]):focus-visible{outline:3px solid #FFD400;outline-offset:4px}
.paused .packet-flow,.scenario:not(.motion-ready) .packet-flow{animation-play-state:paused}
@keyframes lab-packet{to{stroke-dashoffset:-164}}

/* Reading inserts use numbered facts and hard-edged editorial callouts. */
.component-brief{padding:26px 0;border-block:3px solid #000;margin:0 0 34px}
.component-brief>span{font:400 23px/1.2 var(--display);letter-spacing:.3px;text-transform:uppercase;color:#000}
.component-brief ul{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:25px;list-style:none;padding:0;margin:22px 0 0;counter-reset:fact}
.component-brief li{counter-increment:fact;font:15px/1.6 var(--body);padding-left:17px;border-left:2px solid #000;color:#000}
.component-brief li:before{content:counter(fact,decimal-leading-zero);display:block;width:fit-content;padding:3px 7px;margin-bottom:12px;background:#FFD400;color:#000;font:34px/1 var(--display)}
.article-example{background:#fff;border:3px solid #000;border-left:12px solid #FFD400;border-radius:0;padding:28px 30px;margin:34px 0;box-shadow:none}
.article-layout article .article-example h2{font:400 35px/1.12 var(--display);text-transform:uppercase;letter-spacing:0;color:#000;margin:14px 0 18px}
.article-example .eyebrow{font:750 10px/1.5 var(--body);color:#000;letter-spacing:1px}
.article-layout article .article-example p{font-size:17px;color:#000;margin-bottom:0}
.journey-step-notes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:3px solid #000;gap:24px;margin:25px 0;padding-top:22px}
.journey-step-notes span{display:block;width:fit-content;padding:4px 7px;font:750 11px/1.4 var(--body);letter-spacing:1px;text-transform:uppercase;color:#000;background:#FFD400;margin-bottom:11px}
.journey-step-notes p{font:15px/1.65 var(--body);color:#000;margin:0}
.journey-understanding{margin:38px 0;border:3px solid #000;border-radius:0;padding:32px;background:#000;color:#fff}
.journey-understanding .eyebrow{color:#fff}
.journey-understanding h2{font:400 38px/1.12 var(--display);text-transform:uppercase;max-width:850px;color:#FFD400;margin:14px 0 24px;letter-spacing:0}
.journey-understanding summary{cursor:pointer;width:fit-content;max-width:100%;border:2px solid #fff;padding:11px 15px;font:650 14px/1.5 var(--body);min-height:44px;color:#fff}
.journey-understanding summary:focus-visible{outline:3px solid #FFD400;outline-offset:4px}
.journey-understanding details>p{max-width:850px;font:16px/1.75 var(--body);color:#fff;margin:20px 0 0}
.journey-transcript .step-context{font:14px/1.7 var(--body);color:#444;margin:12px 0}
.step-context strong{font-weight:750;color:#000}
.journey-stage-art{border-radius:0;box-shadow:none}
.journey-stage-content{min-width:0}
.journey-progress{overflow-x:auto}
.journey-progress button{min-width:44px;min-height:44px}

/* Enlarged diagrams stay native, bounded and keyboard-scrollable. */
.lab-figure-tools{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:16px}
.lab-panel .expand-diagram,.lab-panel .lab-motion{background:#000;color:#fff;border:1px solid #fff;border-radius:0;padding:11px 13px;min-height:44px;margin:0;font:650 11px/1.4 var(--body);cursor:pointer}
.expand-diagram span{margin-left:9px}
.expand-diagram:hover,.lab-motion:hover{color:#FFD400;border-color:#FFD400}
.diagram-dialog{border:3px solid #FFD400;border-radius:0;width:min(1080px,calc(100% - 32px - env(safe-area-inset-left,0px) - env(safe-area-inset-right,0px)));max-width:calc(100% - 32px - env(safe-area-inset-left,0px) - env(safe-area-inset-right,0px));max-height:calc(100vh - 32px - env(safe-area-inset-top,0px) - env(safe-area-inset-bottom,0px));max-height:calc(100dvh - 32px - env(safe-area-inset-top,0px) - env(safe-area-inset-bottom,0px));padding:0;color:#fff;background:#000;margin:auto;overflow:hidden;overscroll-behavior:contain;color-scheme:dark}
.diagram-dialog[open]{display:grid;grid-template-rows:auto minmax(0,1fr) auto}
.diagram-dialog::backdrop{background:#000d;backdrop-filter:none}
.diagram-dialog>header{display:flex;align-items:center;justify-content:space-between;min-width:0;gap:15px;padding:18px 23px;background:#FFD400;color:#000;border-bottom:3px solid #000}
.diagram-dialog h3{font:400 29px/1.1 var(--display);text-transform:uppercase;letter-spacing:0;margin:0;min-width:0;overflow-wrap:anywhere}
.lab-panel .close-diagram{border:2px solid #000;color:#fff;border-radius:0;background:#000;min-height:44px;min-width:76px;padding:10px 14px;font:650 12px/1.4 var(--body);white-space:nowrap;cursor:pointer;flex-shrink:0}
.lab-panel .close-diagram:focus-visible{outline:3px solid #000;outline-offset:4px}
.diagram-dialog-canvas{min-width:0;min-height:0;overflow:auto;padding:20px;overscroll-behavior:contain;scroll-padding:12px;-webkit-overflow-scrolling:touch}
.diagram-dialog-canvas:focus-visible{outline:3px solid #FFD400;outline-offset:-5px}
.diagram-dialog-canvas .lab-diagram{width:100%;min-width:660px;max-height:none;margin:0}
.diagram-dialog>p{font:12px/1.7 var(--body);color:#ccc;border-top:1px solid #555;padding:16px 23px;margin:0;overflow-wrap:anywhere}
.diagram-dialog .packet-flow{animation:none}

@media(max-width:1000px){
 .lab-workbench{grid-template-columns:minmax(0,1.45fr) minmax(240px,1fr)}
 .lab-header{grid-template-columns:86px minmax(0,1fr)}
 .lab-header>div:not(.lab-index){padding:23px}
 .lab-index{font-size:62px}
 .lab-header h2{font-size:35px}
 .lab-type{display:none}
 .lab-stage{padding:21px 18px}
 .lab-stage-heading{display:block}
 .lab-stage-heading>span:first-child{display:block;margin-bottom:11px}
 .lab-controls{padding:25px 22px}
 .lab-metric dd{font-size:58px}
 .lab-metric dd.metric-text{font-size:22px}
 .lab-panel .lab-result{grid-template-columns:1fr 1.6fr;gap:24px}
}
@media(max-width:800px){
 .lab-workbench{grid-template-columns:minmax(0,1fr)}
 .lab-stage{padding:25px 30px}
 .lab-stage-heading{display:flex}
 .lab-stage-heading>span:first-child{margin:0}
 .lab-diagram{max-height:380px}
 .lab-controls{padding:28px 30px;border-left:0;border-top:3px solid #000;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 28px;align-items:start}
 .lab-controls>.lab-control-step,.lab-controls>label,.lab-controls>.lab-readout,.lab-controls>input,.lab-controls>.range-ends{grid-column:1}
 .lab-controls>label{margin:18px 0 12px}
 .lab-controls>.lab-presets{grid-column:2;grid-row:2/4;margin:18px 0 10px}
 .lab-controls>.lab-hint{grid-column:2;grid-row:4/7;margin:0}
 .lab-controls>.reset-scenario{grid-column:1}
 .lab-controls>.lab-switch{grid-row:2/5}
 .lab-controls:has(.lab-switch)>.lab-hint{grid-row:5/7}
 .component-brief ul{gap:20px}
 .journey-step-notes{grid-template-columns:1fr}
}
@media(max-width:540px){
 .scenario.lab-panel{margin:44px 0;border-width:2px}
 .lab-header{grid-template-columns:64px minmax(0,1fr);border-bottom-width:2px}
 .lab-index{font-size:47px;padding:17px 6px;border-right-width:2px}
 .lab-header>div:not(.lab-index){padding:20px 16px}
 .lab-header .eyebrow{font-size:9px;letter-spacing:.8px;margin-bottom:9px}
 .lab-header h2{font-size:28px;line-height:1.12}
 .lab-intro{font-size:14px;padding:20px 18px}
 .lab-workbench{border-block-width:2px}
 .lab-stage{padding:20px 12px}
 .lab-stage-heading{display:block;margin:0 5px}
 .lab-stage-heading>span:first-child{font-size:12px;margin-bottom:10px}
 .lab-stage figcaption{font-size:11px;margin:0 5px}
 .lab-diagram .diagram-label{font-size:15px;letter-spacing:.3px}
 .lab-diagram .diagram-small,.lab-diagram .axis-label{font-size:17px}
 .lab-diagram .diagram-value{font-size:18px}
 .lab-diagram .route-label{font-size:16px}
 .lab-controls{display:block;padding:24px 18px;border-top-width:2px}
 .lab-controls label{font-size:17px}
 .lab-readout .range-value{font-size:72px}
 .lab-readout{margin:12px 0 18px}
 .lab-controls:has(.lab-switch) .range-value{font-size:37px}
 .lab-controls .lab-presets{margin:20px 0}
 .lab-presets button{font-size:11px;padding:10px;flex:1}
 .lab-controls .lab-hint{font-size:14px;margin:17px 0}
 .lab-switch{grid-template-columns:repeat(2,minmax(0,1fr))}
 .lab-switch button{font-size:11px;flex:initial}
 .lab-switch button:before{margin-right:6px}
 .lab-observation{padding:24px 18px}
 .lab-result-heading{display:block}
 .lab-comparison{display:block;margin-top:10px;font-size:12px}
 .lab-metrics{gap:10px;margin:22px 0;padding:18px 0}
 .lab-metric{padding-right:9px;border-right-width:1px}
 .lab-metric dt{font-size:10px;line-height:1.5;min-height:30px}
 .lab-metric dd{font-size:42px}
 .lab-metric dd.metric-text{font-size:16px;letter-spacing:-.3px}
 .lab-metric dd span{font-size:10px;line-height:1.4;margin-top:8px}
 .lab-panel .lab-result{display:block;padding:22px 19px}
 .lab-panel .lab-result strong{font-size:28px;line-height:1.15;margin-bottom:16px}
 .lab-panel .lab-result p{font-size:14px}
 .lab-assumptions{border-top-width:2px}
 .lab-assumptions>summary{padding:17px 18px;align-items:flex-start;font-size:12px}
 .lab-assumptions>summary>span:last-child{font-size:10px;max-width:130px;text-align:right;line-height:1.6}
 .lab-assumptions summary i{margin-left:8px}
 .lab-panel .scenario-limits{padding:20px 18px}
 .lab-panel .scenario-limits ul{columns:1}
 .component-brief ul{grid-template-columns:minmax(0,1fr);gap:20px}
 .component-brief li{font-size:15px}
 .component-brief li:before{font-size:30px}
 .article-example{padding:24px 20px;margin:28px 0;border-left-width:8px}
 .article-layout article .article-example h2{font-size:28px}
 .article-layout article .article-example p{font-size:16px}
 .journey-understanding{padding:26px 22px}
 .journey-understanding h2{font-size:31px}
 .journey-step-notes{gap:22px;margin:24px 0}
 .journey-step-notes p{font-size:15px}
 .journey-transcript .step-context{font-size:14px}
 .journey-progress button{flex-shrink:0}
 .journey-stage{padding:26px 22px}
 .lab-figure-tools{margin-inline:5px;gap:9px}
 .lab-panel .expand-diagram,.lab-panel .lab-motion{font-size:10px;padding-inline:10px}
 .diagram-dialog>header{padding:15px}
 .diagram-dialog h3{font-size:23px}
 .diagram-dialog-canvas{padding:12px}
 .diagram-dialog>p{padding:14px 15px;font-size:11px}
 .diagram-dialog .diagram-label{font-size:11px;letter-spacing:1px}
 .diagram-dialog .diagram-small,.diagram-dialog .axis-label{font-size:13px}
 .diagram-dialog .diagram-value{font-size:16px}
 .diagram-dialog .route-label{font-size:13px}
}
@media(max-height:500px) and (orientation:landscape){
 .diagram-dialog>header{padding:10px 16px}
 .diagram-dialog h3{font-size:23px}
 .diagram-dialog-canvas{padding:12px}
 .diagram-dialog>p{padding:10px 16px;font-size:11px;line-height:1.45}
}
@media(forced-colors:active){
 .lab-stage,.diagram-dialog{border:1px solid CanvasText}
 .lab-panel :is(button,input,summary):focus-visible,.lab-stage :is(button,[tabindex]):focus-visible,.diagram-dialog-canvas:focus-visible,.journey-understanding summary:focus-visible{outline-color:Highlight}
 .lab-panel .lab-presets button[aria-pressed=true]{forced-color-adjust:none;background:Highlight;color:HighlightText;border-color:Highlight}
 .lab-status:before{forced-color-adjust:none;background:CanvasText}
 .lab-panel .close-diagram,.lab-panel .expand-diagram{border:1px solid ButtonText}
 .lab-diagram{forced-color-adjust:none;background:#000;color:#fff}
 .lab-panel input[type=range]{appearance:auto;accent-color:auto}
 .lab-panel input[type=range]::-webkit-slider-runnable-track{background:CanvasText}
 .lab-panel input[type=range]::-webkit-slider-thumb{appearance:auto;-webkit-appearance:auto;background:ButtonFace;border-color:ButtonText}
 .lab-panel input[type=range]::-moz-range-track{background:CanvasText}
 .lab-panel input[type=range]::-moz-range-thumb{background:ButtonFace;border-color:ButtonText}
 .lab-panel input[type=range]::-moz-range-progress{background:Highlight}
}
@media(prefers-reduced-motion:reduce){.packet-flow{animation:none}.diagram-dialog-canvas{scroll-behavior:auto}}