:root{--paper:#f3f0e8;--ink:#282b27;--muted:#757970;--line:#d8d8cc;--accent:#a95e37;--dark:#182323;--sans:Arial,Helvetica,sans-serif;--serif:Georgia,'Times New Roman',serif}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:14px/1.55 var(--sans)}button,a,input{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid #bf764c;outline-offset:4px}a{color:inherit}button{color:inherit}button:disabled{cursor:default;opacity:.45}.masthead{max-width:1512px;margin:auto;padding:28px 5%;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.wordmark{text-decoration:none;display:flex;gap:16px;align-items:center;font-size:10px;font-weight:700;letter-spacing:2px}.wordmark small{display:block;font-size:10px;letter-spacing:.5px;font-weight:400;margin-top:3px;color:var(--muted)}.mark{font:italic 26px 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label{display:flex;justify-content:space-between;font-size:8px;letter-spacing:1.5px;color:#818879}.part-browser label span{letter-spacing:0}#part-search{width:100%;border:0;border-bottom:1px solid var(--line);padding:10px 0;background:transparent;font:10px var(--sans);border-radius:0;color:var(--ink);outline-offset:0;margin-bottom:5px}.part-list{height:143px;overflow:auto;scrollbar-width:thin;scrollbar-color:#c8ccbc transparent}.part-list button{background:transparent;border:0;border-bottom:1px solid #e8e9df;width:100%;text-align:left;padding:8px 4px;display:flex;align-items:center;justify-content:space-between;font-size:10px;color:#7b8273}.part-list button.active{color:#9c5836}.part-list button span:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.part-list button span:last-child{font-size:10px;margin-left:7px}.part-list .empty{font-size:11px;color:#7b8273}.explode-controls{display:flex;align-items:center;gap:35px;padding:22px 25px;background:#ecece2}.explode-title .eyebrow{margin:0 0 5px;font-size:8px}.explode-title strong{font:normal 15px var(--serif)}.slider-wrap{flex:1;min-width:100px}.slider-labels{display:flex;align-items:center;justify-content:space-between;font-size:9px;color:#777e70;margin-bottom:9px}.slider-labels output{font:10px monospace;color:#a55e39}input[type=range]{appearance:none;-webkit-appearance:none;width:100%;height:3px;background:linear-gradient(to right,#a86a46 var(--progress,0%),#c9cebd var(--progress,0%));border-radius:4px;margin:0;cursor:pointer}input[type=range]::-webkit-slider-thumb{appearance:none;width:14px;height:14px;background:#f5f4ea;border:3px solid #a86a46;border-radius:50%;box-shadow:0 1px 3px #0002}input[type=range]::-moz-range-thumb{width:9px;height:9px;background:#f5f4ea;border:3px solid #a86a46;border-radius:50%}#motion{border:1px solid #c8cdbe;border-radius:3px;background:transparent;padding:10px 13px;font-size:10px;white-space:nowrap}#motion span{font-size:15px;margin-right:7px}#motion[aria-pressed=true]{background:#344a40;color:#fff}.subsystems{display:flex;align-items:center;gap:5px;padding:15px 20px;background:#f7f6ef;border-top:1px solid var(--line);flex-wrap:wrap}.subsystems>span{font-size:7px;letter-spacing:1.5px;color:#939987;margin-right:12px}.subsystems button{font-size:9px;border:1px solid transparent;border-radius:20px;padding:6px 10px;background:transparent;color:#808977}.subsystems button.active{border-color:#bfc7b4;color:#465b42;background:#edf0e5}.stories{padding:70px 0 58px}.section-heading{position:relative}.section-heading .eyebrow{margin-bottom:15px}h2{font:normal 34px/1.15 var(--serif);letter-spacing:-.8px}.section-heading h2{margin:0 0 30px}.section-heading>p:last-child{position:absolute;bottom:0;right:0;color:#7b8373;font-size:11px;line-height:1.8}.story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.story{position:relative;text-align:left;border:0;border-top:1px solid 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5% 30px;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:8px;letter-spacing:1px;color:#858c7c}.footer-sep{margin:0 12px}footer>span:last-child{font:italic 12px var(--serif);letter-spacing:0}#loading{position:absolute;inset:45% 0 auto;text-align:center;color:#d2d7c8;font:italic 20px var(--serif)}#render-error{position:absolute;inset:100px 40px;color:#d2d7c8}#render-error h2{font-size:25px}#render-error p{max-width:340px;font-size:13px}#part-labels{position:absolute;inset:0;pointer-events:none}.part-label{position:absolute;color:#d4d8c6;font-size:8px;letter-spacing:.5px;white-space:nowrap;padding:4px 7px;background:#182825c9;border:1px solid #b3ba963d;border-radius:2px;transform:translate(-50%,-100%);box-shadow:0 1px 5px #0002}.part-label:after{content:'';position:absolute;left:50%;bottom:-12px;height:11px;width:1px;background:#b3ba9680}@media(min-width:1600px){.viewport{height:650px}.part-list{height:210px}}@media(max-width:1050px){.specs{gap:20px}.specs b{font-size:25px}.specs small{font-size:6px}.workbench{grid-template-columns:minmax(0,1fr) 260px}.inspector{padding:22px 18px 0}.viewport{height:550px}.explode-controls{gap:22px}.explode-title strong{font-size:13px}.view-buttons button{padding:7px 9px}}@media(max-width:760px){main{padding:0 5%}.masthead{padding:20px 5%}.source-link{font-size:9px;max-width:110px;text-align:right}.source-link span{padding-left:3px}.intro{padding:35px 0 27px;display:block}.intro h1{font-size:46px}.lede{max-width:350px}.specs{margin-top:28px;justify-content:space-between;gap:10px}.specs b{font-size:25px}.specs small{font-size:7px}.workbench{grid-template-columns:1fr}.viewport{height:420px}.inspector{padding:22px;display:grid;grid-template-columns:1fr 1fr;gap:0 24px}.inspector-top{grid-column:1/-1}#detail{min-height:180px;margin-top:18px}#detail h2{font-size:25px}.part-browser{grid-column:2;grid-row:2/4;margin-top:18px}.part-list{height:200px}.part-actions{border:0;align-self:end;flex-wrap:wrap;gap:1px;padding-bottom:16px}.scene-toolbar{padding:10px 12px;gap:5px;flex-wrap:wrap;font-size:9px}.view-buttons button{font-size:9px;padding:6px 8px}.view-buttons #reset{padding-left:10px;margin-left:2px}.scene-caption{font-size:7px;left:18px;right:18px}.gesture-hint{left:18px;font-size:8px;bottom:19px;max-width:230px}.gesture-hint span{padding:0 4px}.floating-button{right:15px;font-size:8px}.explode-controls{flex-wrap:wrap;padding:20px;gap:18px}.explode-title{flex:1}.slider-wrap{flex-basis:100%;order:3}#motion{font-size:9px;padding:8px}.subsystems{padding:12px;gap:2px}.subsystems>span{width:100%;margin:0 0 5px 8px}.subsystems button{font-size:9px;padding:6px 8px}.stories{padding-top:45px}.section-heading h2{font-size:29px}.section-heading>p:last-child{position:static;margin-bottom:27px}.story-grid{gap:24px;grid-template-columns:1fr}.story h3{margin-top:22px}.story p{max-width:90%;margin-bottom:15px}.story{padding-bottom:0}.sources{grid-template-columns:1fr;gap:25px;padding:35px 0}.source-grid{gap:14px 12px}footer{gap:25px;font-size:7px}footer>span:last-child{font-size:11px}.wordmark{font-size:9px;letter-spacing:1.5px}.wordmark small{font-size:9px}.scene-caption span:last-child{display:none}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media(max-width:390px){.inspector{grid-template-columns:1fr}#detail{min-height:0}.part-browser{grid-column:1;grid-row:auto;margin-top:0;padding-bottom:15px}.part-list{height:130px}.part-actions{padding-top:10px}.viewport{height:350px}.view-buttons{gap:0}.intro h1{font-size:40px}}

.dimensions{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:22px;padding:12px 0}.dimensions summary{font-size:10px;cursor:pointer;list-style:none;color:#8e6146}.dimensions summary span{float:right}.dimensions[open] summary{margin-bottom:15px}.dimensions table{width:100%;border-collapse:collapse;font-size:10px;margin:12px 0 15px}.dimensions th{text-align:left;font-size:8px;letter-spacing:1px;color:#89917e;text-transform:uppercase;font-weight:400}.dimensions td,.dimensions th{padding:7px 4px;border-bottom:1px solid #dddfd3}.dimensions td:last-child{font-variant-numeric:tabular-nums}.dimensions td{color:#606b5a}.dimensions p{font-size:10px!important}
/* Running mechanism, explicit attribution and touch layouts. */
#inspector-content{display:flex;flex-direction:column;min-height:0}.inspector-toggle{display:none}.running-controls{padding:17px 25px;background:#f7f6ef;border-top:1px solid var(--line)}.running-readout{display:flex;align-items:center;gap:12px;font-size:10px}.running-readout .live-dot{margin:0}.running-readout strong{font-size:10px;font-weight:400;color:#5a6e55;min-width:88px}#movement-time{font:20px/1.2 monospace;letter-spacing:1px;color:#435342}.date-readout{font-size:8px;color:#8b917f;letter-spacing:1px}.date-readout b{font:13px monospace;padding-left:5px;color:#5c6d50}.running-options{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-top:14px}.running-options label{font-size:9px;color:#7f8873;margin-right:3px}.running-options select,.running-options button{font:10px var(--sans);padding:8px 10px;border:1px solid #d0d5c4;border-radius:3px;color:#586b50;background:transparent}.running-options select{background:#eeefe5}#running-note{font-size:9px;color:#87917d;margin:12px 0 0;line-height:1.6}.credits{margin-top:26px}.credits h3{font:22px var(--serif);margin:0 0 17px}.credits strong{font-weight:600;color:#59664e}.credits a{font-size:10px;color:#986142}.credits p{margin-bottom:12px!important}.ss-ref{margin-left:10px}footer a{text-decoration:none}
@media(max-width:760px){
 html{scroll-padding-top:12px}body{overflow-x:clip}.masthead{padding:15px 5%}.intro{padding-top:27px}.intro h1{font-size:42px}.intro .eyebrow{font-size:8px}.lede{font-size:12px}.specs small{letter-spacing:1px}.explorer{scroll-margin-top:12px}.scene-toolbar{display:block;padding:12px}.scene-toolbar>div:first-child{margin:0 0 10px 3px}.view-buttons{display:grid;grid-template-columns:repeat(4,1fr);gap:4px}.view-buttons button{min-height:44px;font-size:11px;padding:5px}.view-buttons #reset{padding:5px;margin:0}.viewport{height:clamp(300px,49svh,440px);min-height:300px}.scene-caption{top:17px}.gesture-hint{font-size:9px;bottom:18px;max-width:calc(100% - 115px);line-height:1.8}.floating-button{min-width:76px;min-height:44px;bottom:10px;font-size:10px}.inspector{display:block;padding:0}.inspector-toggle{display:flex;align-items:center;width:100%;min-height:58px;gap:10px;background:#eeefe4;border:0;text-align:left;padding:14px 18px;font-size:12px}.inspector-toggle span{font-size:9px;color:#8a927f;flex:1}.inspector-toggle b{font-size:17px;font-weight:400;color:#78866c}#inspector-content{display:none;padding:20px}.inspector.expanded #inspector-content{display:flex}.inspector-top{display:flex}#detail{min-height:0;margin-top:18px}#detail p{font-size:13px;line-height:1.75}#detail .evidence{font-size:10px}#detail a{font-size:11px;display:inline-block;padding:8px 0}.part-actions{display:flex;gap:12px;padding:8px 0 15px}.part-actions button{min-height:44px;font-size:11px;padding:8px 12px}.part-browser{margin-top:10px;padding-bottom:0}.part-browser label{font-size:9px}#part-search{font-size:16px;min-height:46px}.part-list{height:210px;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}.part-list button{min-height:44px;font-size:12px;padding:10px 4px}.explode-controls{padding:18px;gap:16px}.explode-title strong{font-size:14px}#motion{min-height:44px;font-size:11px}.slider-wrap{padding-bottom:5px}.slider-labels{font-size:11px;margin-bottom:7px}input[type=range]{height:44px;background:transparent;position:relative;touch-action:pan-y}input[type=range]::-webkit-slider-runnable-track{height:4px;background:linear-gradient(to right,#a86a46 var(--progress,0%),#c9cebd var(--progress,0%));border-radius:4px}input[type=range]::-webkit-slider-thumb{width:24px;height:24px;margin-top:-10px;border-width:4px}input[type=range]::-moz-range-track{height:4px;background:#c9cebd}input[type=range]::-moz-range-thumb{width:17px;height:17px;border-width:4px}.running-controls{padding:17px 18px}.running-readout{flex-wrap:wrap;gap:9px}.running-readout strong{font-size:10px;min-width:80px}#movement-time{font-size:20px}.running-options{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:15px}.running-options label{display:none}.running-options select,.running-options button{min-height:44px;font-size:11px;padding:8px;min-width:0;width:100%}.running-options select{font-size:16px;grid-column:1/-1}#running-note{font-size:10px}.subsystems{display:flex;flex-wrap:nowrap;overflow-x:auto;gap:6px;padding:12px;scrollbar-width:thin;-webkit-overflow-scrolling:touch}.subsystems>span{display:none}.subsystems button{flex:none;min-height:44px;font-size:11px;padding:8px 13px}.sources{gap:22px}.sources p:not(.eyebrow){font-size:13px}.source-grid{grid-template-columns:1fr;gap:5px}.source-grid a{font-size:12px;min-height:44px;display:flex;align-items:center}.dimensions summary{font-size:12px;min-height:44px;padding:10px 0}.dimensions table{font-size:10px}.credits a{font-size:12px;min-height:44px;display:inline-flex;align-items:center}.story p{font-size:13px}.story-action{font-size:12px;min-height:44px;padding:12px 0}.section-heading>p:last-child{font-size:13px}footer{display:block;padding-bottom:max(24px,env(safe-area-inset-bottom))}footer>span{display:block;margin-top:10px}.sources{scroll-margin-top:18px}
}
@media(max-width:390px){.viewport{height:330px}.intro h1{font-size:38px}.specs b{font-size:22px}.specs small{font-size:6px}.inspector-toggle{padding:12px}.inspector-toggle span{font-size:8px}.running-readout{gap:8px}#movement-time{font-size:18px}.running-readout strong{min-width:72px;font-size:9px}.explode-title{flex-basis:100%}#motion{width:100%}}
@media(max-height:550px) and (orientation:landscape) and (max-width:1000px){.viewport{height:74svh;min-height:280px}.intro{padding:20px 0}.intro h1{font-size:35px}.intro .lede{margin-top:12px}.specs{margin-top:18px}.workbench{grid-template-columns:1fr}.inspector{display:block;padding:0}.inspector-toggle{display:flex;width:100%;min-height:48px;align-items:center;justify-content:space-between;border:0;background:#eeefe4;padding:12px 20px}.inspector-toggle span{font-size:10px;color:#7f8b73}#inspector-content{display:none;padding:20px}.inspector.expanded #inspector-content{display:flex}}
/* Optional guided path; the rest of the explorer stays available. */
.subsystems .tour-start{border:1px solid #aa7959;border-radius:4px;color:#8c593b;background:#ede4d5;margin-right:12px;font-size:10px;padding:8px 12px}.tour-start span{font-size:8px;opacity:.8;margin-left:12px}.subsystems .tour-start[aria-expanded=true]{background:#a36a46;color:#fff8ec;border-color:#a36a46}.power-tour{background:#f5eddf;border-top:1px solid #c9b293;padding:23px 25px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px 35px}.power-tour[hidden]{display:none}.tour-heading{grid-column:1/-1;display:flex;align-items:center;gap:20px}.tour-heading .eyebrow{margin:0;font-size:8px}.tour-heading>span:last-child{font:10px monospace;color:#89785d}.tour-copy h2{font-size:26px;margin:0 0 10px}.tour-copy p{font-size:12px;color:#6e715e;line-height:1.8;max-width:650px;margin:0 0 9px}.tour-copy a{font-size:10px;text-underline-offset:3px;color:#94603f}.tour-navigation{display:grid;grid-template-columns:1fr 1fr;align-content:center;gap:9px;max-width:300px}.tour-navigation button{border:1px solid #c4b69d;background:transparent;min-height:44px;padding:9px 12px;font-size:11px;border-radius:3px}.tour-navigation #tour-next{background:#865d3e;color:#fff8ed;border-color:#865d3e}.tour-navigation #tour-return{grid-column:1/-1}.tour-navigation #tour-exit{grid-column:1/-1;border-color:transparent;color:#786b56}.tour-hint{grid-column:1/-1;font-size:10px;line-height:1.7;color:#847965;margin:0;max-width:800px}.power-tour:focus{outline:2px solid #b87d51;outline-offset:-3px}
@media(max-width:760px){.power-tour{padding:18px;display:flex;flex-direction:column;gap:13px}.power-tour[hidden]{display:none}.tour-copy h2{font-size:25px}.tour-copy p{font-size:13px;margin-bottom:8px}.tour-navigation{max-width:none;grid-template-columns:1fr 1fr;gap:8px}.tour-navigation button{font-size:12px}.tour-navigation #tour-return,.tour-navigation #tour-exit{grid-column:auto}.tour-heading{justify-content:space-between}.tour-hint{font-size:11px}.tour-copy a{display:inline-flex;min-height:30px;align-items:center;font-size:11px}.subsystems .tour-start{margin-right:5px;padding:8px 13px;font-size:11px}.tour-start span{display:none}}

@media(max-width:760px){.explorer.touring .viewport{height:32svh;min-height:240px;max-height:320px}.explorer.touring .tour-copy h2{font-size:22px}.explorer.touring .tour-copy p{font-size:12px;line-height:1.65}.explorer.touring .tour-hint{font-size:10px}}