@import url('data:text/css,');
:root{color-scheme:dark;--bg:#0b1219;--panel:#111b24;--line:#243440;--text:#e6ecef;--muted:#8fa4b3;--accent:#57d6d0;--amber:#edac73}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.5 system-ui,-apple-system,sans-serif}a{color:inherit;text-decoration:none}button,select{font:inherit;color:var(--text);background:#17252f;border:1px solid #31434f;border-radius:5px;cursor:pointer}button:hover,select:hover{border-color:var(--accent)}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:3px}header{height:72px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 28px}.brand{font-size:15px;font-weight:750;letter-spacing:.14em;display:flex;align-items:center;gap:13px}.brand-mark{font-size:38px;color:var(--accent);line-height:1}.revision{font-size:10px;color:var(--muted);font-weight:500;letter-spacing:.12em;border-left:1px solid var(--line);padding-left:18px;margin-left:5px}nav{display:flex;gap:26px;font-size:12px;color:#b7c8d2}nav a:hover{color:var(--accent)}main{display:grid;grid-template-columns:264px minmax(400px,1fr) 276px;min-height:calc(100vh - 72px)}aside{padding:28px 22px}.controls{border-right:1px solid var(--line)}.eyebrow{font:9px/1.5 ui-monospace,monospace;letter-spacing:.16em;color:var(--muted)}h1{font-weight:450;letter-spacing:-.05em;line-height:1.03;font-size:43px;margin:17px 0 17px}p{margin:0 0 16px}.intro{font-size:12px;color:#a8bac7;line-height:1.7}section{margin-top:27px}.section-label{display:flex;align-items:center;gap:8px;font:10px ui-monospace,monospace;color:var(--accent);margin-bottom:13px}.section-label span{font:12px system-ui;color:#cedae0}.section-label output{margin-left:auto;color:var(--muted)}.segmented{display:flex;gap:6px}.segmented button{flex:1;font-size:23px;padding:9px 0 7px;background:transparent}.segmented button span{display:block;font:8px ui-monospace,monospace;letter-spacing:.1em;color:var(--muted);margin-top:3px}.segmented button.active{border-color:var(--accent);background:#143034;color:var(--accent)}.small{font-size:10px;color:var(--muted);margin:9px 0 0}input[type=range]{width:100%;accent-color:var(--accent);height:4px;cursor:pointer;margin:12px 0}.range-label{display:flex;justify-content:space-between;color:var(--muted);font-size:10px;margin-top:3px}.button-row{display:flex;gap:8px;margin-top:12px}.button-row button{width:50%;padding:7px;font-size:11px}select{width:100%;padding:9px;font-size:12px}.checks{display:flex;gap:9px;margin-top:12px;font-size:10px;color:var(--muted)}input[type=checkbox]{accent-color:var(--accent);vertical-align:middle;margin:0 3px 0 0}.prototype-note{margin-top:25px;background:#251f1b;border:1px solid #513c2c;border-radius:5px;padding:12px;font-size:11px}.prototype-note strong{font-size:11px;font-weight:500;color:#f3c69f}.status-dot,.live-dot{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--amber);margin-right:7px}.prototype-note p{color:#b6a79b;font-size:10px;line-height:1.6;margin:7px 0 0}.download{margin-top:20px;display:grid;font-size:10px;color:#a6bbc8}.download a{padding:7px 0;border-bottom:1px solid #1d2c36}.download span{float:right;color:var(--accent)}.stage{position:relative;min-height:800px;background:radial-gradient(ellipse at 50% 42%,#1a2c38 0,#111f2a 40%,#0c151e 82%);overflow:hidden}#viewport{position:absolute;inset:0}canvas{display:block;width:100%;height:100%;touch-action:none}.stage-top{position:absolute;top:22px;left:24px;right:24px;display:flex;gap:15px;justify-content:space-between;align-items:center;pointer-events:none}.stage-title{font:9px ui-monospace,monospace;letter-spacing:.13em;color:#c7d7df}.live-dot{background:var(--accent);box-shadow:0 0 10px #57d6d04d}.view-buttons{display:flex;gap:5px;pointer-events:auto}.view-buttons button{font-size:9px;padding:7px 9px;background:#15242bdd}.scale-info{position:absolute;bottom:100px;left:24px;color:#7e99aa;font:9px/1.8 ui-monospace,monospace;display:flex;gap:20px}.stage-bottom{position:absolute;bottom:78px;left:24px;right:24px;display:flex;justify-content:space-between;gap:10px;color:#7992a2;font-size:9px}.legend{display:flex;gap:11px}.legend i{display:inline-block;width:6px;height:6px;border-radius:1px;margin-right:5px}.laser{background:#bc9562}.printed{background:#42bec5}.hardware{background:#b4c2d0}.experimental{background:#ec9064}.motion-bar{position:absolute;bottom:0;left:0;right:0;padding:16px 22px;background:#0b141de6;border-top:1px solid var(--line);display:flex;align-items:center;gap:13px}.motion-bar button{font-size:10px;white-space:nowrap;padding:8px 12px;border-color:#3e676a;color:var(--accent)}.motion-bar input{width:100px;flex:1;max-width:220px}.motion-bar output{font:10px monospace;min-width:32px}.motion-bar span{font-size:9px;color:var(--muted);max-width:132px}.inspector{border-left:1px solid var(--line);background:#101922}.inspector h2{font-size:21px;letter-spacing:-.025em;font-weight:480;line-height:1.2;margin:13px 0}.inspector>p{font-size:12px;color:var(--muted);line-height:1.7}.part-meta{font-size:10px;color:var(--accent)}.part-meta a{display:block;margin-top:8px;text-decoration:underline}.rule{height:1px;background:var(--line);margin:25px 0}.braid-option{display:flex;gap:12px;padding-top:21px}.option-number{flex-shrink:0;width:24px;height:24px;border:1px solid #3a505f;display:grid;place-items:center;color:#a0bbc9;font:11px monospace;border-radius:50%}.braid-option.active .option-number{color:var(--accent);border-color:#448784}.braid-option h3{font-size:13px;font-weight:500;margin:0 0 6px}.braid-option p{font-size:11px;line-height:1.65;color:var(--muted);margin-bottom:8px}.tag{font:8px ui-monospace,monospace;letter-spacing:.08em;color:var(--accent)}.tag.muted{color:#bdad9b}.relationship{margin-top:27px;padding-top:20px;border-top:1px solid var(--line)}.relationship h3{font-size:12px;font-weight:500;margin:0 0 9px}.relationship p{font-size:11px;color:var(--muted);line-height:1.7}.relationship b{font-weight:500;color:#c5d3dc}.guide-link{font-size:11px;color:var(--accent)}#loading{position:absolute;inset:0;display:grid;place-items:center;background:#101b25d9;color:var(--accent);z-index:20}#labelsLayer{position:absolute;inset:0;pointer-events:none}.model-label{position:absolute;border-left:2px solid #537784;background:#0a151dd9;padding:5px 8px;font:9px ui-monospace,monospace;color:#c6d6df;white-space:nowrap;transform:translate(12px,-50%)}.model-label em{font-style:normal;color:var(--accent);margin-right:6px}@media(min-width:1600px){main{grid-template-columns:290px minmax(400px,1fr) 300px}aside{padding:34px 28px}.stage{min-height:calc(100vh - 72px)}}@media(max-width:1200px){main{grid-template-columns:230px minmax(350px,1fr)}.inspector{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px 25px}.inspector>.eyebrow,.inspector>.rule,.inspector>.relationship{display:none}.inspector h2{grid-column:1}.inspector>p{grid-column:1}.braid-option{grid-row:1/4;padding-top:0}.inspector .braid-option:nth-of-type(4){grid-column:2}.gesture{display:none}.stage{min-height:840px}.view-buttons button{padding:6px}.stage-top{flex-direction:column;align-items:flex-start}.revision{display:none}}@media(max-width:700px){header{height:58px;padding:0 15px}.brand{font-size:12px;gap:8px}nav{gap:14px;font-size:10px}nav a:nth-child(2){display:none}main{display:flex;flex-direction:column}.stage{order:0;min-height:610px}.controls{order:1;padding:20px;display:grid;grid-template-columns:1fr 1fr;gap:0 22px;border-right:0}.controls>.eyebrow,.controls>h1,.controls>.intro{display:none}.controls section{margin-top:0;margin-bottom:22px}.prototype-note{margin-top:0}.download{margin-top:0}.inspector{order:2;display:block}.inspector>.eyebrow,.inspector>.relationship{display:block}.braid-option{margin-top:20px}.stage-bottom{left:14px;bottom:77px}.scale-info{left:14px;bottom:98px;gap:12px}.stage-top{top:16px;left:16px}.motion-bar{padding:14px}.motion-bar span{display:none}.model-label{font-size:8px;padding:4px 6px}.legend{gap:8px;font-size:8px}}

/* Keep playback controls together on compact model viewports. */
.motion-bar{flex-wrap:wrap;column-gap:10px;row-gap:8px}
.motion-bar input{min-width:48px;width:72px}
.motion-bar output{min-width:36px}
.speed-control{display:flex;align-items:center;gap:7px;font-size:10px;color:var(--muted);white-space:nowrap}
.speed-control input[type=range]{width:100px;max-width:100px;flex:none}
.speed-control output{color:var(--accent);width:42px;text-align:right}
.motion-bar>span{margin-left:auto}
@media(max-width:1500px){.motion-bar>span{display:none}}
@media(max-width:700px){.motion-bar{padding:10px 14px;column-gap:7px;row-gap:0}.motion-bar button{padding:7px 8px}.speed-control{width:100%;gap:10px}.speed-control input[type=range]{flex:1;width:auto;max-width:none}.motion-bar output{min-width:34px}.stage .stage-bottom{bottom:103px}.stage .scale-info{bottom:123px}}

[hidden]{display:none!important}.mode-switch{display:flex;gap:6px;margin-top:20px}.mode-switch button{flex:1;padding:9px 4px;font-size:10px}.mode-switch button.active{border-color:var(--accent);color:var(--accent);background:#143034}.control-label{display:block;font-size:10px;color:var(--muted);margin-bottom:12px}.control-label select{display:block;margin-top:5px}.industrial-guide{display:block;margin-top:18px;line-height:1.7}.supply-note{border-left:2px solid #3a777b;padding-left:13px;margin-bottom:25px}.supply-note h3,#industrialFacts h3{font-size:12px;font-weight:500}.supply-note p,#industrialFacts p{font-size:11px;color:var(--muted);line-height:1.7}.supply-note a{font-size:10px;color:var(--accent)}#industrialLegend{font-size:9px;color:var(--muted)}
@media(max-width:1200px) and (min-width:701px){.inspector{display:block;columns:2}.inspector>*{break-inside:avoid}.inspector>.rule{display:block}.supply-note{margin-top:20px}}
@media(max-width:700px){.mode-switch{grid-column:1/-1;margin:0 0 22px;max-width:360px}.scale-info{gap:7px;flex-wrap:wrap;right:12px}.scale-info span{font-size:8px}#industrialLegend{font-size:8px;max-width:310px}.controls{gap:0 14px}.stage-bottom{bottom:82px}}

@media(min-width:701px){.stage{position:sticky;top:0;height:calc(100vh - 72px);min-height:760px}}
@media(max-width:700px){.stage{position:relative;min-height:610px;height:610px}}

.formation-controls .small{line-height:1.65;margin-bottom:12px}.crossing-buttons{display:flex;gap:4px}.crossing-buttons button{flex:1;font-size:10px;padding:7px 2px}#nextCrossing{width:100%;font-size:11px;padding:7px;margin-top:6px;color:var(--accent)}.checks.vertical{flex-direction:column;gap:9px}.live-explanation{border-left:2px solid var(--accent);padding-left:13px;margin-bottom:22px}.live-explanation h2{font-size:21px}.live-explanation p{font-size:11px;line-height:1.7;color:#a4bac7}.live-explanation #crossingText{color:#f1ca98}.live-explanation .mono{font:10px/1.7 ui-monospace,monospace}.live-explanation details{font-size:10px;color:var(--muted)}.live-explanation summary{cursor:pointer;color:var(--accent)}.live-explanation details p{margin-top:10px;font-size:10px}#formation{border-color:#4a9394;color:#7fe4df}
@media(max-width:700px){.view-buttons{flex-wrap:wrap;max-width:310px}.formation-controls{grid-column:1/-1}.formation-controls .checks{flex-direction:row;flex-wrap:wrap}.crossing-buttons{max-width:360px}#nextCrossing{max-width:360px}.live-explanation{columns:auto}}
.fell-label{position:absolute;pointer-events:none;padding:5px 8px;border-left:2px solid #a2e7ec;color:#bfe3e7;background:#10242ce6;font:10px/1.6 ui-monospace,monospace;max-width:200px}.fell-label span{display:block;color:#93adb8;font-size:9px}
.stage-crossings{position:absolute;top:65px;left:24px;display:flex;gap:5px}.stage-crossings button{padding:6px 10px;font-size:10px;background:#10252eed;border-color:#47757a;color:#a5e5e2}@media(max-width:1200px){.stage-crossings{top:100px}}@media(max-width:700px){.stage-crossings{top:113px;left:16px;right:16px;gap:4px}.stage-crossings button{padding:6px 8px;flex:1;font-size:9px}}

/* Keep annotation away from the actual strand contact being inspected. */
.fell-label{left:24px;top:105px;max-width:220px}@media(max-width:1200px){.fell-label{top:145px}}@media(max-width:700px){.fell-label{left:16px;top:155px}}