:root{color-scheme:dark;--bg:#0a171c;--panel:#102027;--line:#29414a;--ink:#e9eee9;--soft:#9ab0b6;--mint:#acf2d1;--gold:#e2bd83;--display:Georgia,'Times New Roman',serif;font:13px/1.6 Arial,Helvetica,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink)}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{cursor:pointer;color:var(--ink);background:#162b33;border:1px solid var(--line);border-radius:6px;padding:9px 12px;line-height:1.35}button:hover,a.button:hover{background:#27444d;border-color:#73908d}button:disabled{opacity:.4;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--mint);outline-offset:3px}[hidden]{display:none!important}.primary{color:#09271f!important;background:var(--mint)!important;border-color:var(--mint)!important;font-weight:700}.primary:hover{filter:brightness(1.08)}.eyebrow{font:700 9px/1.6 Arial;letter-spacing:1.9px;color:var(--mint);margin:0}.topbar{height:70px;padding:0 28px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:#0c1b21;position:relative;z-index:4}.brand{display:flex;align-items:center;gap:11px;font-weight:700;letter-spacing:1.8px;font-size:11px}.brand-icon{font:35px Georgia;color:var(--gold)}.brand small{display:block;font-size:8px;letter-spacing:1.3px;color:var(--soft);margin-top:2px;font-weight:400}.topbar nav{display:flex;gap:25px;align-items:center;font-size:11px;color:#c1d6d6}.store-link{border:1px solid #40534e;border-radius:5px;padding:9px 13px}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 345px;height:calc(100dvh - 70px);min-height:650px}.stage{position:relative;overflow:hidden;background:radial-gradient(ellipse at 54% 37%,#27434a 0,#112831 36%,#07151c 78%);min-width:0}#viewport{position:absolute;inset:0 0 180px;outline:none;touch-action:none}#viewport canvas{display:block;width:100%;height:100%}.hero{position:absolute;left:30px;top:27px;z-index:1;pointer-events:none}.hero h1{font:clamp(34px,3.3vw,58px)/1.02 var(--display);letter-spacing:-1.6px;margin:14px 0 13px;color:#e5eee7}.hero em{font-weight:400;color:#b8ddd0}.hero>p:last-child{color:#95adb5;font-size:11px;line-height:1.7}.hero .eyebrow{font-size:8px;letter-spacing:1.4px}.view-tools{position:absolute;left:28px;bottom:211px;z-index:2;display:flex;gap:4px}.view-tools button{font-size:10px;padding:7px 10px;background:#0c2026dd}.view-tools button[aria-pressed=true],.modes button[aria-pressed=true]{color:var(--mint);border-color:#9bddbd;background:#22443f}#loading{position:absolute;top:45%;left:28px;right:28px;text-align:center;color:var(--mint);font-size:12px}#error{position:absolute;top:36%;left:32px;right:32px;padding:25px;border:1px solid var(--gold);background:#15282d;z-index:4}.scene-caption{position:absolute;top:27px;right:26px;display:flex;gap:7px;align-items:center;color:#9eb6bb;font-size:8px;letter-spacing:1px;flex-wrap:wrap;max-width:250px;justify-content:flex-end}.signal{height:5px;width:5px;border-radius:50%;background:#a7f1cd;box-shadow:0 0 12px #92ffc2}.model-note{width:100%;text-align:right;font-size:8px;letter-spacing:.1px;color:#7c9ba4}.transport{position:absolute;bottom:0;left:0;right:0;padding:15px 28px 21px;background:linear-gradient(#0b1b23e8,#0b1b23);border-top:1px solid #30454d}.modes{display:flex;gap:5px;margin-bottom:13px}.modes button{flex:1;white-space:nowrap;font-size:11px;padding:8px 7px}.transport-row{display:flex;justify-content:space-between;align-items:center;font:9px Arial;letter-spacing:1.4px;color:#98b5bd}.transport-row output{color:var(--mint);font-size:14px;font-variant-numeric:tabular-nums}input[type=range]{width:100%;margin:10px 0 14px;accent-color:var(--mint);cursor:pointer;height:5px}.playback{display:flex;gap:6px;align-items:center}.playback button{font-size:10px;white-space:nowrap;padding:8px 10px}.gesture{color:#829ca5;font-size:9px;line-height:1.5;margin-left:auto;max-width:156px;text-align:right}.inspector{background:linear-gradient(130deg,#142831,#0d2028);border-left:1px solid var(--line);padding:25px 23px 17px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#47636a #102027;outline:none}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:5px}.pill{font-size:8px;border:1px solid #41524e;border-radius:20px;padding:3px 7px;white-space:nowrap;color:var(--gold)}h2{font:34px/1.1 var(--display);letter-spacing:-.7px;margin:16px 0 12px}.intro{color:#9fb7bc;font-size:12px;line-height:1.6;margin:0 0 21px}.tabs{display:flex;border-bottom:1px solid var(--line);margin:0 0 20px;gap:0}.tabs button{flex:1;border:0;background:transparent;border-radius:0;padding:10px 4px;font-size:11px;color:#9bb0b7;border-bottom:2px solid transparent}.tabs button[aria-selected=true]{color:var(--mint);border-color:var(--mint)}.inspector label{display:block;font-size:10px;color:#a2bdc3;margin:14px 0 7px}.inspector input[type=search],.inspector select{width:100%;border:1px solid #37525c;background:#0b1c23;color:var(--ink);padding:11px 10px;border-radius:5px;font-size:11px;min-height:40px}.inspector select{margin-top:8px;padding-right:4px}#part-list{max-width:100%}.part-detail{background:#0c1d24;border:1px solid #2b454f;border-radius:8px;padding:17px 16px;margin:18px 0 12px;min-height:215px}h3{font:25px/1.2 var(--display);margin:10px 0 12px;color:#e5efdf}p{color:#b1c6c9;line-height:1.7}.part-detail p{font-size:12px;margin:9px 0}.part-detail #part-detail{color:#88a6b0;font-size:11px}.part-number{font:9px/1.6 Arial;color:var(--gold);display:block;margin-top:12px;letter-spacing:.3px}.selection-actions{display:flex;gap:7px;margin:12px 0}.selection-actions button{flex:1;font-size:10px;min-height:36px}.selection-actions button[aria-pressed=true]{border-color:var(--mint);color:var(--mint)}.reference{border-top:1px solid var(--line);margin-top:24px;padding-top:15px;font-size:10px;color:#8faab2}.reference summary{cursor:pointer;color:#a8c3c9}.reference p{font-size:10px}.reference a{display:block;padding:5px 0;color:#a8e4cf;text-decoration:underline;text-underline-offset:3px}.reference small{display:block;font-size:9px;margin-top:12px}.inspector footer{border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:19px;padding-top:15px;font-size:10px}.inspector footer button{font-size:9px;padding:7px}.lesson-progress{display:flex;gap:5px;margin:0 0 20px}.lesson-progress button{height:22px;min-width:0;flex:1;font-size:9px;padding:0;border-radius:3px}.lesson-progress button[aria-current=step]{background:var(--mint);color:#08251c;border-color:var(--mint)}#lesson-body{min-height:135px}.lesson-nav{display:flex;justify-content:space-between;align-items:center;gap:7px;margin:19px 0 10px}.lesson-nav button{font-size:11px}.lesson-nav span{color:#7f9aa3;font-size:10px}.wide{display:block;width:100%;text-align:center;font-size:11px;padding:12px}.flow-key{background:#0b1d24;border:1px solid var(--line);border-radius:6px;padding:13px;margin-top:20px}.flow-key h4{font-size:11px;margin:0 0 10px}.flow-key p{font-size:10px}.flow-key small{font-size:10px;color:#829ea5;display:block}.key{display:inline-block;width:7px;height:7px;border-radius:50%;margin:0 4px 0 8px}.inlet{background:#e5b265}.return{background:#83e3c4}.uv{background:#bba7ff}.waste{background:#e79265}.capacity{margin:20px 0}.capacity>div{display:grid;grid-template-columns:1fr auto;gap:8px;margin:16px 0;font-size:11px}.capacity b{font-weight:400;color:var(--gold)}.capacity i{grid-column:1/-1;height:5px;background:linear-gradient(to right,#7dbaa8 var(--fill),#263d44 var(--fill));border-radius:8px}.fine{font-size:10px;color:#819fa8}.specs{margin:23px 0}.specs>div{display:flex;gap:15px;justify-content:space-between;border-bottom:1px solid var(--line);padding:10px 0;font-size:11px}.specs dt{color:#8faab4}.specs dd{text-align:right;margin:0}#labels{position:absolute;inset:0 0 180px;pointer-events:none;overflow:hidden}.part-label{position:absolute;white-space:nowrap;background:#0a1d25df;border:1px solid #779d9c;padding:5px 8px;font-size:9px;border-radius:3px;color:#cdece0;transform:translate(-50%,-50%);pointer-events:none;max-width:180px;overflow:hidden;text-overflow:ellipsis}.part-label.selected{border-color:#c1f2cf;color:#fff4d9}#tooltip{position:absolute;z-index:5;background:#e7f2df;color:#17362f;padding:7px 10px;border-radius:4px;font-size:10px;pointer-events:none;max-width:210px}.skip{position:fixed;left:10px;top:-100px;background:var(--mint);color:#0b2820;z-index:99;padding:10px}.skip:focus{top:10px}.sr-only{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.no-script{position:fixed;bottom:5px;left:5px;background:#0b2229;padding:10px;z-index:6}
@media(min-width:1600px){.workspace{grid-template-columns:minmax(0,1fr) 390px}.inspector{padding:32px}.hero{left:42px;top:35px}.transport{padding:20px 42px 25px}}
@media(max-width:1100px){.workspace{grid-template-columns:minmax(0,1fr) 310px}.inspector{padding:22px 18px}.hero{left:22px;top:26px}.hero h1{font-size:36px}.hero>p:last-child{display:none}.hero .eyebrow{max-width:150px}.scene-caption{max-width:150px;right:19px}.gesture{display:none}.transport{padding:15px 18px 19px}.view-tools{left:18px}.playback button{flex:1}.modes button{font-size:10px}}
@media(max-width:780px){.topbar{height:63px;padding:0 16px}.brand{font-size:9px}.brand small{font-size:7px}.brand-icon{font-size:29px}.topbar nav{font-size:10px;gap:10px}.topbar nav .store-link{display:none}.workspace{display:block;height:auto;min-height:0}.stage{height:min(790px,92dvh);min-height:620px}.hero h1{font-size:37px}.hero .eyebrow{max-width:none;font-size:8px}.hero{left:20px;top:24px}.scene-caption{top:125px;left:20px;right:auto;justify-content:flex-start;max-width:160px;font-size:7px}.model-note{text-align:left}.inspector{border-left:0;border-top:1px solid var(--line);overflow:visible;padding:25px 22px}.inspector h2 br{display:none}.intro br{display:none}#viewport,#labels{top:160px;bottom:187px}.transport{padding:13px 13px 17px}.playback{gap:4px}.playback button{font-size:10px;padding:10px 6px}.view-tools{bottom:211px;left:15px}.modes{gap:4px}.modes button{padding:10px 5px;font-size:10px}.tabs{margin-bottom:18px}.part-detail{min-height:0}.selection-actions button{min-height:43px}.lesson-progress button{height:33px}.stage:fullscreen{height:100dvh}.workspace:fullscreen{overflow:auto}.hero h1{line-height:1.04}.lesson-nav button{min-height:42px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}