/* K76 assembly study. The original CAD meshes and film load only on demand. */
.assembly-lab{margin:38px 0 48px;scroll-margin-top:95px;border:1px solid #cddbd9;border-radius:20px;overflow:hidden;background:#f1f5f2}
.case-hero-copy>.text-link[href="#assembly"]{display:block;margin-top:15px;font-size:13px}
.assembly-heading{display:flex;justify-content:space-between;align-items:end;gap:24px;padding:28px 30px 22px}
.assembly-heading h2{font-size:clamp(23px,3vw,32px);letter-spacing:-.035em;margin:0 0 10px;color:#203f43}
.assembly-heading p{margin:0;font-size:13px;line-height:1.65;color:#5a7072;max-width:570px}
.assembly-heading .eyebrow{color:#4d7671;font-size:10px;letter-spacing:.12em;margin-bottom:10px}
.assembly-tabs{display:flex;flex-shrink:0;padding:4px;border:1px solid #c7d8d1;background:#fff;border-radius:12px;gap:4px}
.assembly-lab button{font:inherit;cursor:pointer;touch-action:manipulation}
.assembly-tabs button{font-size:12px;font-weight:650;padding:12px 16px;min-height:44px;border:0;border-radius:8px;background:transparent;color:#4d6968;white-space:nowrap}
.assembly-tabs button[aria-selected=true]{background:#264e49;color:#fff}
.assembly-lab button:focus-visible,.assembly-lab input:focus-visible,.assembly-lab canvas:focus-visible{outline:3px solid #4676ad;outline-offset:3px}
.assembly-lab button:disabled{cursor:wait;opacity:.65}
.assembly-video{display:block;width:100%;aspect-ratio:16/9;height:auto;max-height:620px;object-fit:contain;background:#edf2ef}
.assembly-chapters{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-block:1px solid #cddbd9;background:#fff}
.assembly-chapters button{display:flex;align-items:center;gap:11px;text-align:left;border:0;border-right:1px solid #dbe5e0;background:none;min-height:69px;padding:16px 20px;font-size:12px;line-height:1.4;color:#315651}
.assembly-chapters button:last-child{border-right:0}
.assembly-chapters button:hover,.assembly-chapters button[aria-current=true]{background:#e3eee7}
.assembly-chapters time{font-size:10px;font-variant-numeric:tabular-nums;color:#668079;white-space:nowrap}
.assembly-meta{display:flex;justify-content:space-between;gap:20px;padding:12px 22px;font-size:11px;color:#607471;border-bottom:1px solid #d4e0d9}
.assembly-meta p{margin:0;line-height:1.5}
.assembly-meta a{color:#365f60;white-space:nowrap}
.assembly-note{margin:0;padding:18px 24px;font-size:12px;line-height:1.7;color:#5b706e;background:#f8faf7}
.assembly-note strong{color:#305650}
.assembly-note a{color:#305650;text-underline-offset:3px}
.assembly-note details{margin-top:8px;font-size:11px}
.assembly-note summary{cursor:pointer;color:#567770}
.assembly-note details p{margin:8px 0 0}
.model-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;min-height:540px;border-top:1px solid #d1dfd7}
.model-left{min-width:0;background:#fff;border-right:1px solid #d1dfd7}
.model-stage{height:470px;position:relative;overflow:hidden;background:radial-gradient(ellipse at 50% 40%,#fff 8%,#f1f6f1 80%)}
.model-stage canvas{width:100%;height:100%;display:block;cursor:grab;touch-action:none}
.model-stage canvas.dragging{cursor:grabbing}
.model-badge{position:absolute;left:18px;top:17px;color:#5e7a70;font-size:10px;letter-spacing:.08em;pointer-events:none;text-transform:uppercase}
.model-camera{position:absolute;right:15px;top:13px;display:flex;gap:5px}
.model-camera button{border:1px solid #cfddd4;background:#ffffffed;color:#32594f;border-radius:7px;min-width:36px;height:36px;font-size:16px}
.model-camera button:last-child{font-size:11px;padding:0 10px}
.model-hotspot{position:absolute;max-width:180px;pointer-events:none;z-index:2;transform:translate(-50%,-100%);padding:7px 10px;background:#244f47;color:#fff;border-radius:6px;font-size:11px;line-height:1.4;box-shadow:0 3px 12px #244f4720}
.model-hotspot:after{content:'';position:absolute;left:50%;top:100%;border:5px solid transparent;border-top-color:#244f47;transform:translateX(-50%)}
.model-hint{position:absolute;bottom:15px;left:18px;right:18px;font-size:10px;color:#6b8178;margin:0;pointer-events:none}
.model-fallback{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:12px;background:#edf2ef;padding:22px;text-align:center;z-index:3}
.model-fallback img{width:100%;height:100%;object-fit:contain;position:absolute;inset:0;opacity:.22}
.model-fallback p,.model-fallback button{position:relative;z-index:1;max-width:400px}
.model-fallback p{font-size:13px;color:#244e49;line-height:1.6;margin:0;padding:12px 15px;border-radius:8px;background:#fffffff2}
.model-fallback button{min-height:44px;padding:10px 18px;border:1px solid #a4bbb0;border-radius:9px;background:#fff;color:#284e46}
.model-controls{padding:15px 18px;border-top:1px solid #d7e2da}
.model-presets{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:15px}
.model-presets button{min-height:38px;padding:8px 11px;border:1px solid #c7d9cd;background:#f7faf6;border-radius:7px;color:#436457;font-size:11px}
.model-presets button[aria-pressed=true]{background:#dcebe0;border-color:#79a38a;color:#224e38}
.model-presets .model-play{margin-left:auto;background:#2e5949;color:white;border-color:#2e5949}
.model-presets .model-play[aria-pressed=true]{background:#183e31;color:#fff}
.model-range-label{display:flex;justify-content:space-between;gap:16px;font-size:11px;color:#5a7766;margin-bottom:9px}
.model-controls input{display:block;width:100%;accent-color:#356a51;cursor:pointer;margin:0;height:22px}
.model-current{margin:7px 0 0;font-size:11px;line-height:1.45;min-height:16px;color:#5a7766}
.model-components{padding:24px 20px;background:#f8faf6}
.model-components h3{font-size:17px;letter-spacing:-.02em;color:#2d5446;margin:0 0 7px}
.model-components>p{font-size:11px;line-height:1.6;color:#688071;margin:0 0 20px}
.component-list{display:grid;gap:6px}
.component-button{display:flex;align-items:center;gap:10px;text-align:left;width:100%;padding:11px 10px;min-height:44px;border:1px solid transparent;border-radius:8px;background:transparent;color:#496b56;font-size:12px!important}
.component-button>span:first-child{display:grid;place-items:center;width:25px;height:25px;border:1px solid #cbddce;border-radius:7px;font-size:10px;font-variant-numeric:tabular-nums;flex-shrink:0}
.component-button:hover{background:#ecf2e9}
.component-button[aria-pressed=true]{background:#e0edde;border-color:#bad0b8;color:#2e5933}
.component-info{border-top:1px solid #d3e0cf;padding-top:16px;margin-top:18px;min-height:102px}
.component-info strong{display:block;font-size:12px;color:#355d40;margin-bottom:7px}
.component-info p{font-size:11px;line-height:1.65;color:#617b62;margin:0}
.model-clear{margin-top:14px;border:0;background:transparent;padding:5px 0;font-size:11px!important;color:#426a4b;text-decoration:underline;text-underline-offset:3px}
.assembly-lab .model-ready-status{font-size:10px;color:#688071;margin-top:20px}
.assembly-accessible{font-size:12px;padding:20px}
@media(max-width:1050px){.assembly-heading{align-items:start;flex-direction:column;gap:18px}.model-layout{grid-template-columns:minmax(0,1fr) 235px}.assembly-chapters button{padding:14px 13px;gap:8px;font-size:11px}}
@media(max-width:700px){.assembly-heading{padding:24px 20px 18px}.assembly-tabs{width:100%}.assembly-tabs button{flex:1}.assembly-chapters{grid-template-columns:1fr 1fr}.assembly-chapters button{border-bottom:1px solid #dbe5e0;min-height:61px}.assembly-chapters button:nth-child(even){border-right:0}.assembly-chapters button:nth-child(n+3){border-bottom:0}.assembly-video{max-height:none}.assembly-meta{padding:12px 16px;font-size:10px}.assembly-note{padding:16px 19px}.model-layout{grid-template-columns:1fr}.model-left{border-right:0}.model-stage{height:395px}.model-components{border-top:1px solid #d1dfd7;padding:20px}.component-list{grid-template-columns:1fr 1fr;gap:5px}.component-button{font-size:11px!important;padding:9px 7px;gap:7px}.component-info{min-height:0;margin-top:14px}.model-ready-status{margin-top:12px!important}.model-controls{padding:14px 15px}.model-badge{max-width:120px;line-height:1.5}.model-presets .model-play{margin-left:0}.model-hint{font-size:9px}.model-presets button{padding:8px 10px}}
@media(max-width:380px){.model-stage{height:365px}.assembly-meta{flex-wrap:wrap;gap:6px}.model-camera button{min-width:32px}.component-button{padding-inline:3px}.assembly-tabs button{padding-inline:10px}}