@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&family=Instrument+Serif:ital@0;1&display=swap');

:root{font-family:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:#303a32;background:#f5f4ee;font-synthesis:none;--green:#294e40;--muted:#777b71;--line:#ddded4;--paper:#fafaf5;--accent:#47aab3}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.4;cursor:wait}button,a,select,input{outline-offset:5px}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid #447b69}button{color:inherit}button svg,.brand svg,.motion-note svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.icon-defs{position:absolute;width:0;height:0;overflow:hidden}.header{height:82px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:34px;padding:0 40px;background:#fafaf6}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:#2d4638;font-size:29px;letter-spacing:-1.4px;font-weight:650}.brand-light{font-weight:400}.brand-period{color:#9a9f5f}.brand-icon{display:grid;place-items:center;width:37px;height:37px;background:#e5e9dc;border:1px solid #d5dccb;border-radius:50%}.brand-icon svg{width:26px;height:26px}.header-subtitle{font-size:9px;letter-spacing:2px;color:#85897b;padding-top:5px}.header>.button{margin-left:auto}.button{border:0;background:none;border-radius:7px;min-height:40px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:10px 15px;font-size:12px;font-weight:550;white-space:nowrap;transition:background .15s,box-shadow .15s}.button-outline{border:1px solid #d5d9cd;background:#fafbf5}.button-outline:hover{background:#eaf0e3}.button-primary{background:var(--green);color:#fff}.button-primary:hover{background:#386450}.file-type{font-size:9px;color:#7e8578;border-left:1px solid var(--line);padding-left:9px;margin-left:3px}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 334px;max-width:1920px;margin:0 auto;min-height:calc(100dvh - 82px)}.explorer{min-width:0;padding:36px 34px 20px;display:flex;flex-direction:column;position:relative;overflow:hidden}.eyebrow{font-size:9px;letter-spacing:1.7px;color:#777d6c;font-weight:550;display:flex;align-items:center;gap:8px}.live-dot{width:5px;height:5px;border-radius:50%;background:#6a8d64}.intro-number{color:#a3a797;margin-left:6px}.intro h1{font-family:'Instrument Serif',Georgia,serif;font-size:clamp(36px,4.3vw,58px);font-weight:400;letter-spacing:-1.5px;margin:13px 0 8px;line-height:1.07}.intro h1>span{color:#73896b}.intro p{font-size:12px;color:var(--muted);margin:0;line-height:1.6}.stage{position:relative;flex:1;min-height:420px;margin-top:24px;background:radial-gradient(ellipse at 48% 45%,#fffcf0 0%,#f4f3eb 59%,#eceee3 100%);border:1px solid #e0e2d6;border-radius:12px;overflow:hidden}.stage:after{content:'';position:absolute;inset:0;pointer-events:none;border-radius:12px;box-shadow:inset 0 0 45px #d7d9c61a}.stage canvas{display:block;width:100%;height:100%;position:absolute;inset:0;touch-action:none}.stage-top{position:absolute;top:17px;left:17px;right:17px;display:flex;justify-content:space-between;align-items:center;gap:10px;z-index:3;pointer-events:none}.stage-top>*{pointer-events:auto}.segment{display:flex;background:#e9ebdfcf;padding:3px;border:1px solid #dbded0;border-radius:7px}.segment button{border:0;background:none;font-size:11px;padding:8px 13px;border-radius:4px;color:#727968;white-space:nowrap}.segment button.active{background:#fdfdf8;box-shadow:0 1px 4px #35412513;color:#35472d}.stage-actions{display:flex;gap:7px}.tool{display:flex;align-items:center;justify-content:center;gap:6px;background:#f9faf2bd;border:1px solid #dce0d1;border-radius:6px;font-size:10px;padding:8px 10px;color:#64705b;white-space:nowrap}.tool svg{width:14px;height:14px}.tool:hover,.tool[aria-pressed=true],#drag[aria-pressed=true]{background:#dce8d7;border-color:#96b098;color:#2b5b3f}.stage-bottom{position:absolute;bottom:17px;left:20px;right:17px;display:flex;justify-content:space-between;align-items:center;pointer-events:none;z-index:3}.stage-bottom button{pointer-events:auto}.specimen{font-size:8px;letter-spacing:1.3px;color:#939985;display:flex;align-items:center;gap:9px}.specimen-cross{font-size:18px;font-weight:400;color:#a0a891}.labels-layer{position:absolute;inset:0;pointer-events:none;overflow:hidden;z-index:2}.model-label{position:absolute;transform:translate(-50%,-50%);display:flex;align-items:center;gap:6px;white-space:nowrap;border:1px solid #dddccb;background:#fffff2e8;border-radius:5px;padding:7px 9px;font-size:10px;font-weight:500;box-shadow:0 2px 6px #41462b0a;pointer-events:auto;transition:opacity .2s}.model-label:before{content:'';width:5px;height:5px;background:var(--part-color);border-radius:50%;box-shadow:0 0 0 2px #fff8}.model-label.selected{border-color:var(--part-color);color:#283d37;box-shadow:0 2px 10px #344a3b14}.model-label[hidden]{display:none}.model-label:after{content:'';position:absolute;left:50%;top:100%;height:15px;border-left:1px solid #7c8c6f88;pointer-events:none}.interaction-dock{margin-top:16px;border:1px solid #dfe1d5;border-radius:10px;background:#fafbf5;display:flex;align-items:center;gap:18px;padding:15px 16px;box-shadow:0 2px 3px #3c493203}.separation-control{display:flex;gap:17px;align-items:center;flex:1;min-width:0}.range-wrap{flex:1;min-width:95px;max-width:260px}.range-heading,.range-endpoints{display:flex;justify-content:space-between;font-size:10px}.range-heading{color:#59624f;gap:10px}.range-heading output{font-variant-numeric:tabular-nums;color:#77816c;font-size:10px}.range-endpoints{font-size:8px;color:#969b8b;margin-top:0}.range-wrap input{width:100%;height:4px;display:block;margin:12px 0 8px;accent-color:#416c50;cursor:ew-resize}.animation-control{display:flex;align-items:center;gap:9px;border-left:1px solid #dfe1d4;padding-left:17px}.play-button{width:32px;height:32px;border-radius:50%;border:1px solid #d7ddcd;background:#edf1e6;display:grid;place-items:center}.play-button svg{width:14px;height:14px;stroke-width:2}.animation-caption{display:flex;flex-direction:column;gap:3px;white-space:nowrap}.animation-caption strong{font-size:10px;font-weight:550}.animation-caption span{font-size:8px;color:#929982}.speed-label select{font-size:10px;border:0;background:transparent;color:#6c775e;cursor:pointer;padding:5px 0 5px 5px}.explorer-footnote{display:flex;justify-content:space-between;align-items:center;margin:15px 1px 0;color:#999d8e;font-size:9px;gap:15px}.explorer-footnote #gesture-hint span{padding:0 7px;color:#b6bcab}.real-3d{font-size:8px;letter-spacing:1px;display:flex;gap:6px;align-items:center;white-space:nowrap}.real-3d>span{width:4px;height:4px;background:#8eae74;border-radius:50%}.sidebar{background:#fbfbf6;border-left:1px solid var(--line);padding:27px 25px 20px;min-width:0}.guide-heading{display:flex;align-items:center;justify-content:space-between;font-size:9px;letter-spacing:1.6px;font-weight:600;color:#717e62;border-bottom:1px solid #e4e6d9;padding-bottom:21px}.guide-edition{font-size:9px;letter-spacing:0;color:#929885;font-weight:400}.part-detail{padding:25px 0 20px}.part-kicker{display:flex;gap:7px;align-items:center;color:#78866d;font-size:8px;letter-spacing:.8px}.part-swatch{width:7px;height:7px;border-radius:50%;background:var(--accent)}#part-index{margin-left:auto;color:#a7ad9a;font-size:9px;letter-spacing:0}.part-detail h2{font-family:'Instrument Serif',Georgia,serif;font-weight:400;font-size:35px;line-height:1.1;letter-spacing:-.5px;margin:12px 0}.part-detail>p{font-size:11px;line-height:1.75;color:#7a8172;margin:0}.part-detail h3,.structures-heading h3{font-size:8px;font-weight:600;letter-spacing:1.1px;margin:0}.detail-functions{margin-top:19px}.detail-functions h3{color:#6d795f}.detail-functions ul{list-style:none;margin:9px 0 0;padding:0}.detail-functions li{font-size:10px;line-height:1.6;margin:6px 0;padding-left:13px;color:#6e7863;position:relative}.detail-functions li:before{content:'↳';position:absolute;left:0;color:#a0af8d}.motion-note{display:flex;gap:9px;padding:12px;margin-top:17px;background:#edf1e6;border:1px solid #e1e7d7;border-radius:7px;color:#6d8061}.motion-note svg{width:18px;height:18px}.motion-note h3{font-size:8px;letter-spacing:1px;margin:1px 0 4px}.motion-note p{font-size:9px;line-height:1.6;margin:0;color:#7e8b73}.part-detail>.part-fact{font-size:9px;line-height:1.65;margin-top:13px;color:#919984;font-style:italic}.structures-heading{border-top:1px solid #e3e6d8;padding-top:19px;display:flex;align-items:center;justify-content:space-between;gap:4px}.structures-heading h3{font-size:8px;letter-spacing:.9px;color:#78846a}.structures-heading>span{font-size:6px;letter-spacing:.6px;color:#a0aa94}.part-list{display:flex;flex-direction:column;margin-top:12px;gap:2px}.part-button{display:flex;align-items:center;gap:10px;width:100%;padding:8px 10px;border:1px solid transparent;border-radius:6px;background:transparent;text-align:left;font-size:10px;min-height:34px}.part-button:hover{background:#f0f2e8}.part-button.active{background:#eaf0e5;border-color:#d9e3d0}.part-button .part-dot{width:8px;height:8px;border-radius:3px;background:var(--part-color);box-shadow:inset 0 0 0 1px #0000000b}.part-button .part-number{font-size:8px;color:#a9b09c;margin-left:auto;font-variant-numeric:tabular-nums}.part-button svg{width:13px;height:13px;margin-left:4px;color:#7f9270;opacity:0}.part-button.active svg{opacity:1}.part-button.active .part-number{color:#7e926c}.guide-footer{border-top:1px solid #e6e8dd;margin-top:18px;padding-top:12px;font-size:9px;color:#9aA28c;line-height:1.6}.guide-footer>p{margin:0 0 9px}.guide-footer details summary{cursor:pointer;color:#7f8f70;font-size:9px}.guide-footer details p{margin:10px 0}.guide-footer a{display:block;color:#6b8360;text-underline-offset:3px;margin:7px 0;font-size:9px}.loading,.error{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:15px;z-index:4;background:#f4f3eb;font-size:12px;color:#79856c}.loading[hidden],.error[hidden]{display:none}.loading-orbit{width:35px;height:35px;border-radius:50%;border:1px solid #d5decb;border-top-color:#647e4e;animation:spin 1.3s linear infinite}.error{padding:35px;text-align:center;line-height:1.6}.error strong{font-family:Georgia,serif;font-size:24px;font-weight:400}.error span{max-width:330px}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);padding:12px 22px;background:#2e493a;color:#f5f9f0;border:1px solid #53705b;border-radius:9px;font-size:12px;z-index:20;box-shadow:0 8px 30px #16322020;max-width:90vw;text-align:center}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@keyframes spin{to{transform:rotate(360deg)}}
@media(min-width:1500px){.explorer{padding:43px 47px 24px}.workspace{grid-template-columns:minmax(0,1fr) 365px}.sidebar{padding:30px}.stage{min-height:500px}.part-detail>p{font-size:12px}.part-button{font-size:11px;min-height:36px}}
@media(max-width:1150px){.header{padding:0 25px}.explorer{padding:28px 23px 18px}.workspace{grid-template-columns:minmax(0,1fr) 305px}.sidebar{padding:25px 20px}.interaction-dock{flex-wrap:wrap;gap:14px;padding:13px}.separation-control{width:100%}.animation-control{border-left:0;border-top:1px solid #e2e6d8;padding:11px 0 0;width:100%;gap:10px}.animation-caption{flex-direction:row;align-items:center;gap:10px}.speed-label{margin-left:auto}.range-wrap{max-width:none}.stage{min-height:410px}.explorer-footnote{font-size:8px}.real-3d{display:none}.header-subtitle{font-size:8px;letter-spacing:1.4px}}
@media(max-width:800px){.header{height:70px;padding:0 20px}.header-subtitle{display:none}.workspace{display:flex;flex-direction:column;min-height:0}.explorer{padding:26px 20px 18px}.intro h1{font-size:48px}.stage{min-height:440px;flex:none;height:55vw;max-height:650px}.sidebar{border-left:0;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:0 28px;padding:25px 25px 30px}.guide-heading{grid-column:1/-1}.part-detail{grid-column:1;grid-row:2/4}.structures-heading{grid-column:2;border-top:0;padding-top:25px;align-self:start}.structures-heading>span{display:none}.part-list{grid-column:2;margin-top:0;align-self:start}.guide-footer{grid-column:1/-1}.interaction-dock{flex-wrap:nowrap}.animation-control{border-top:0;border-left:1px solid #e2e6d8;padding:0 0 0 12px;width:auto}.animation-caption{display:none}.separation-control{width:auto}.stage-top{top:14px;left:14px;right:14px}.stage-bottom{left:16px;right:14px}.range-wrap{min-width:110px}}
@media(max-width:480px){.header{padding:0 16px}.brand{font-size:25px;gap:8px}.brand-icon{width:32px;height:32px}.header>.button{font-size:10px;padding:8px 10px;gap:6px;min-height:35px}.header>.button svg{width:15px}.file-type{display:none}.explorer{padding:23px 13px 18px}.intro{padding-left:4px}.intro h1{font-size:43px}.intro p{font-size:10px;max-width:290px}.eyebrow{font-size:8px;letter-spacing:1.3px}.stage{height:440px;min-height:0;margin-top:20px}.stage-top{left:10px;right:10px;top:10px}.segment button{font-size:10px;padding:8px 9px}.stage-actions{gap:4px}.stage-actions .tool{padding:8px}.stage-actions .tool svg{width:12px}.stage-actions #reset span{display:none}.specimen{font-size:6px;letter-spacing:.6px}.stage-bottom{left:12px;right:11px;bottom:11px}.stage-bottom .tool{font-size:9px;padding:6px}.interaction-dock{flex-wrap:wrap;padding:12px;gap:12px}.separation-control{gap:11px;width:100%}.separation-control>.button{padding:10px;min-height:39px;font-size:10px}.separation-control>#drag{min-width:38px;padding:10px}.separation-control>#drag span{display:none}.range-wrap{min-width:100px}.animation-control{width:100%;border-left:0;border-top:1px solid #e2e6d8;padding:10px 0 0}.animation-caption{display:flex;flex-direction:row;gap:10px}.explorer-footnote{font-size:8px;justify-content:center;line-height:1.6;text-align:center}.explorer-footnote #gesture-hint span{padding:0 4px}.sidebar{padding:23px 20px;display:block}.part-detail{padding-bottom:20px}.part-detail h2{font-size:35px}.part-detail>p{font-size:12px}.detail-functions li{font-size:11px}.motion-note p{font-size:10px}.structures-heading{border-top:1px solid #e3e6d8;padding-top:20px}.structures-heading>span{display:block}.part-list{display:grid;grid-template-columns:1fr 1fr;gap:4px;margin-top:13px}.part-button{font-size:10px;padding:9px 7px;gap:7px;min-height:39px}.part-button svg{display:none}.guide-footer{font-size:10px}.model-label{font-size:9px;padding:6px 7px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}.loading-orbit{animation:none}}
@media(min-width:801px){.workspace{height:calc(100dvh - 82px);min-height:600px}.sidebar{overflow-y:auto}.stage{min-height:250px}.explorer{padding-top:26px}.intro h1{font-size:clamp(36px,4vw,53px)}.stage{margin-top:19px}}