:root{color-scheme:dark;--bg:#0e1516;--panel:#192123;--panel2:#222d2e;--line:rgba(215,223,211,.13);--linebright:rgba(201,224,207,.3);--cream:#eee9d7;--muted:#9ba9a5;--gold:#dcb98a;--mint:#a3bbad;--pale:#c6d4c8}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--cream);margin:0;font:14px/1.55 'DM Sans',system-ui,sans-serif}button,select,input{font:inherit}button{cursor:pointer}button:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid var(--gold);outline-offset:2px}a{color:inherit}b,strong{font-weight:700}.app{min-width:305px}.topbar{height:66px;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 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22px;letter-spacing:2px;font-size:10px;color:#d5dfd3;pointer-events:none;background:linear-gradient(180deg,rgba(8,21,24,.68),transparent)}.viewer-head strong{font-size:10px}.render-chip{font-size:10px;color:#d5c2a1;border:1px solid #647169;padding:6px 9px;letter-spacing:.8px}.viewer-instructions{margin-left:auto;color:#b0b9ae;font-size:9px}canvas#scene{display:block;width:100%;height:100%;touch-action:none}.view-overlays{position:absolute;z-index:2;left:20px;bottom:22px;display:flex;flex-direction:column;gap:9px;pointer-events:none}.mode-pill{letter-spacing:2px;font-size:10px;border:1px solid #74817a;background:#1f2e2fb3;padding:9px 12px;width:max-content}.orbit-note{font-size:10px;letter-spacing:1px;color:#b8c8bf}.view-actions{position:absolute;right:16px;bottom:17px;display:flex;gap:7px}.view-actions button{background:#101d1dd9;border:1px solid #53605c;color:var(--cream);padding:7px 12px;font-size:11px}.view-actions 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.18s}.mode.active{background:#303834;border-color:#bb9e70}.mode:hover{background:#313c39}.mode-number{font-family:Georgia,serif;color:var(--gold);font-size:12px}.mode b{display:block;font-size:12px}.mode small{display:block;color:#93a09a;font-size:10px}.mode-arrow{color:var(--gold);font-size:14px}.section-break{height:1px;background:var(--line);margin:20px 0}.inspection{padding:2px}.inspection-name{font-size:15px;font-weight:700;margin-bottom:2px}.inspection-type{letter-spacing:1.5px;color:var(--gold);font-size:10px}.inspection p{font-size:12px;line-height:1.6;color:#cad1ca;margin:11px 0 5px}.part-history{font-size:11px;color:#93a49c;line-height:1.5}.inspection-buttons{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;margin-top:14px}.inspection-buttons button{font-size:10px;background:transparent;border:1px solid #55625a;color:#d4d9cf;padding:8px 3px}.inspection-buttons 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span{color:var(--gold);font-weight:700}footer{display:flex;justify-content:space-between;gap:16px;border-top:1px solid var(--line);padding:25px 0 38px;color:#879a92;font-size:10px;letter-spacing:1px}footer a{color:var(--gold)}
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@media(max-width:800px){.topbar{height:58px;gap:10px;padding:0 16px}.breadcrumb,.separator,.header-right span:not(.dot-live){display:none}.header-right{gap:4px}.workspace{grid-template-columns:1fr}.hero{padding:28px 0 18px}.hero h1{font-size:clamp(25px,6vw,44px);letter-spacing:-1.2px}.eyebrow{font-size:8px;letter-spacing:1.8px}.viewer-area{height:clamp(340px,65vw,520px)}.viewer-instructions{display:none}.viewer-head{padding:0 12px;gap:7px}.viewer-head strong{font-size:9px}.render-chip{font-size:8px}.control-side{grid-column:1;max-height:none;border:1px solid #364641;border-top:0;display:block}.control-side.mobile-collapsed{display:none}.mode-list{grid-template-columns:repeat(5,minmax(0,1fr));gap:4px}.mode{display:flex;flex-direction:column;min-height:64px;justify-content:center;text-align:center;padding:5px 3px}.mode small,.mode-arrow{display:none}.mode b{font-size:10px}.section-break{margin:13px 0}.bottom-panel{display:block;padding:18px}.physics-controls{margin:20px 0}.readouts{grid-template-columns:repeat(3,1fr)}.learning{padding:46px 0 28px}.learning-top{display:block}.learning-cards{grid-template-columns:1fr;gap:10px}.learning article{padding:18px}#quiz-questions{grid-template-columns:1fr;gap:10px}.quiz{padding:19px}.quiz-question h3{min-height:0}.quiz-footer{flex-wrap:wrap}footer{flex-direction:column}.view-actions button span{display:none}}
@media(max-width:450px){.hero h1{font-size:28px}.hero p{font-size:12px}.viewer-area{height:380px}.render-chip{display:none}.mode-number{font-size:10px}.mode b{font-size:9px}.readout strong{font-size:17px}.readout{padding:7px}.readout span{font-size:8px}.mode-control{gap:12px}.mode-control input{width:100%;flex:auto}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;scroll-behavior:auto!important}}