*{box-sizing:border-box}:root{color:#292924;background:#faf9f6;font:14px/1.7 ui-monospace,SFMono-Regular,Consolas,Liberation Mono,monospace;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}body{min-width:280px;min-height:100vh;margin:0;padding:25px 24px 20px}button,a,select{color:inherit;font:inherit}a{text-decoration-thickness:1px;text-underline-offset:4px}a:hover,button:not(:disabled):hover{color:#91613b}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid #91613b;outline-offset:4px}.viewer-page{width:min(100%,1360px);margin:0 auto}.viewer-header{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;padding-bottom:17px;border-bottom:1px solid #deddd6}.eyebrow,.model-meta,.manual-page,.step-position{color:#858579;font-size:11px}.eyebrow{margin:0 0 5px;letter-spacing:.04em}h1{margin:0;font-size:19px;font-weight:500;letter-spacing:-.6px;line-height:1.3}.back-link{color:#77776d;font-size:12px;text-decoration:none}main{padding-top:18px}.model-stage{position:relative;height:clamp(420px,58vh,700px);min-height:380px;overflow:hidden;border:1px solid #deddd6;background:#f6f5f1}#model-canvas{display:block;width:100%;height:100%;cursor:grab;touch-action:none}#model-canvas:active{cursor:grabbing}#model-canvas:focus-visible{outline:3px solid #91613b;outline-offset:-5px}.part-tooltip{position:absolute;z-index:3;max-width:min(260px,calc(100% - 16px));padding:6px 10px;border:1px solid rgba(255,255,255,.48);background:#272621f0;box-shadow:0 4px 14px #231f1933;color:#fffdf7;font-size:12px;line-height:1.35;pointer-events:none}.part-tooltip[data-kind=hardware]{border-color:#d09a68}.part-tooltip[hidden]{display:none}.viewer-status{position:absolute;inset:50% auto auto 50%;width:max-content;max-width:calc(100% - 32px);margin:0;color:#77776d;font-size:12px;text-align:center;transform:translate(-50%,-50%);pointer-events:none}.viewer-status[hidden]{display:none}.viewer-controls{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 0 0}.viewer-controls p{margin:0;color:#77776d;font-size:12px}.viewer-controls button,.step-controls button{padding:5px 9px;border:1px solid #deddd6;background:transparent;cursor:pointer}button:disabled{color:#aaa99e;cursor:not-allowed}.model-meta{margin:8px 0 0}.parts-inventory{margin-top:9px;border-top:1px solid #e4e2db;border-bottom:1px solid #e4e2db}.parts-inventory summary{padding:8px 0;color:#68685f;font-size:12px;cursor:pointer}.parts-inventory summary::marker{color:#91613b}.inventory-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;padding:4px 0 14px}.inventory-group h3{margin:0 0 6px;color:#858579;font-size:10px;font-weight:500;letter-spacing:.06em;text-transform:uppercase}.inventory-group ul{margin:0;padding:0;list-style:none}.inventory-group li{display:grid;grid-template-columns:2ch minmax(0,1fr) auto;gap:8px;padding:3px 0;border-bottom:1px dotted #e4e2db;font-size:11px;line-height:1.5}.inventory-code{color:#91613b}.inventory-quantity{color:#858579}.step-guide{margin-top:21px;padding-top:14px;border-top:1px solid #deddd6}.step-guide-meta{display:flex;align-items:baseline;justify-content:space-between;gap:16px}.manual-page{margin:0}.step-copy{min-height:96px;padding-top:5px}.step-copy h2{margin:0 0 6px;font-size:15px;font-weight:500;letter-spacing:-.3px;line-height:1.4}.step-copy p{max-width:70ch;margin:0;color:#55554e;font-size:13px;line-height:1.65}.step-controls{display:grid;grid-template-columns:auto minmax(60px,1fr) auto;align-items:center;gap:12px}.step-controls--animated{grid-template-columns:auto auto minmax(60px,1fr) auto}.step-controls .play-step{color:#91613b;white-space:nowrap}.step-controls .play-step[hidden]{display:none}.step-controls input{width:100%;margin:0;accent-color:#91613b}.step-control-footer{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:8px}.step-position{display:block;margin:0}.animation-speed-control{display:inline-flex;align-items:center;gap:8px;color:#77776d;font-size:11px;white-space:nowrap}.animation-speed-control select{min-height:32px;padding:4px 8px;border:1px solid #deddd6;background:#faf9f6;color:#292924;font-size:12px}.step-note{margin:4px 0 0;color:#858579;font-size:11px}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;clip-path:inset(50%)}@media(max-width:520px){body{padding:18px 16px}.viewer-header{align-items:flex-start}.back-link{text-align:right}.model-stage{height:min(48vh,390px);min-height:320px}.inventory-list{grid-template-columns:1fr;gap:14px}.viewer-controls{align-items:flex-start}.viewer-controls p{max-width:65%}.step-controls{grid-template-columns:auto minmax(40px,1fr) auto;gap:8px}.step-controls--animated{grid-template-columns:auto auto minmax(40px,1fr) auto}.step-control-footer{flex-wrap:wrap}.step-controls button{padding:5px 7px;font-size:12px}}