:root{color:#263c39;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--ink:#263c39;--muted:#63716c;--teal:#246b5e;--line:#dcded2;background:#f7f5ed;font-family:ui-rounded,Segoe UI,system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;overflow-x:clip}button,input,select,textarea{font:inherit}button{cursor:pointer}button:disabled{opacity:.5;cursor:default}[hidden]{display:none!important}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{outline-offset:3px;outline:3px solid #cb6d3d}h1[tabindex="-1"]:focus{outline:none}.lab{max-width:1060px;margin:0 auto;padding:24px 32px}.lab-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;padding-bottom:22px;display:flex}.brand{color:var(--ink);align-items:center;gap:9px;font-size:21px;font-weight:750;text-decoration:none;display:flex}.brand-light{font-weight:400}.sun{color:#cd6e38;font-size:34px}.development{letter-spacing:.4px;color:#665423;white-space:nowrap;background:#eee5bc;border-radius:30px;padding:7px 12px;font-size:12px}.hero{max-width:780px;padding:45px 0 30px}.eyebrow{letter-spacing:1.8px;color:var(--muted);margin:0 0 10px;font-size:11px;font-weight:750}h1{letter-spacing:-2px;margin:0;font-size:clamp(36px,5.8vw,65px);line-height:1.08}h1 span{color:var(--teal)}.hero>p:not(.eyebrow){color:var(--muted);max-width:650px;font-size:18px;line-height:1.6}.age-label{color:var(--muted);font-size:12px}.concepts{flex-direction:column;gap:18px;display:flex}.concept{text-align:left;border:1px solid var(--line);width:100%;color:var(--ink);background:#fffdf8;border-radius:18px;grid-template-columns:minmax(180px,32%) minmax(0,1fr);align-items:stretch;padding:0;transition:transform .15s,box-shadow .15s;display:grid;overflow:hidden}.concept:hover{transform:translateY(-2px);box-shadow:0 8px 24px #263c390b}.concept-art{color:#2a7360;background:#dcebe2;justify-content:center;align-items:center;padding:20px;display:flex}.spin .concept-art{color:#a95834;background:#f5e2cd}.interlock .concept-art{color:#6c589a;background:#e7e1f1}.shape .concept-art{color:#947127;background:#f3eac8}.concept-art svg{fill:none;stroke:currentColor;stroke-width:5px;stroke-linecap:round;stroke-linejoin:round;width:100%;max-width:300px}.concept-art .fine{stroke-width:2px}.concept-art circle,.concept-art ellipse,.concept-art rect{fill:currentColor;stroke:none}.concept-art .eye{fill:#fffdf8}.concept-art text{fill:currentColor;stroke:none;font-size:26px}.concept-copy{flex-direction:column;gap:10px;padding:26px 30px;display:flex}.concept-number{letter-spacing:1px;color:var(--muted);font-size:10px;font-weight:750}.concept strong{font-size:26px;line-height:1.2}.concept-copy>span:not(.concept-number,.play-arrow){color:#5c6d65;font-size:15px;line-height:1.5}.play-arrow{padding-top:6px;font-size:14px;font-weight:750}.about,.feedback{border-top:1px solid var(--line);color:#5c6e65;margin-top:26px;padding-top:18px;font-size:13px;line-height:1.6}summary{cursor:pointer;font-weight:650}.game-heading{align-items:center;gap:20px;margin:28px 0 22px;display:flex}.game-heading h1{letter-spacing:-1px;font-size:clamp(26px,4vw,40px)}.game-heading .eyebrow{margin-bottom:5px}.button{min-height:44px;color:var(--ink);touch-action:manipulation;background:#fffdf8;border:1px solid #c7d2c8;border-radius:10px;justify-content:center;align-items:center;gap:6px;padding:10px 16px;font-size:14px;font-weight:650;display:inline-flex}.button:hover{background:#edf2e5}.button.primary{background:var(--teal);border-color:var(--teal);color:#fff}.button.primary:hover{background:#1b5c50}.button.small{padding:8px 12px}.button[aria-pressed=true]{background:#dcecd9;border-color:#447660}.game-layout{flex-direction:column;gap:16px;width:100%;min-width:0;display:flex}.game-scene{border:1px solid var(--line);background:#e9efe2;border-radius:16px;width:100%;min-width:0;height:clamp(300px,53vw,540px);position:relative;overflow:hidden}.game-scene canvas{touch-action:pan-y;width:100%;height:100%;display:block}.game-controls{grid-template-columns:repeat(auto-fit,minmax(min(190px,100%),1fr));align-items:start;gap:14px;width:100%;min-width:0;padding:18px 0;display:grid}.game-controls>p,.game-controls>details,.game-controls>.game-status,.game-controls>.metric,.game-controls>.wide{grid-column:1/-1}.game-controls p{margin:0;line-height:1.5}.game-controls h2{margin:0;font-size:18px}.game-panel{border:1px solid var(--line);background:#fffdf8;border-radius:12px;min-width:0;padding:16px}.control{flex-direction:column;gap:7px;min-width:0;font-size:13px;font-weight:650;display:flex}.control input[type=range]{width:100%;min-height:24px;accent-color:var(--teal)}select,textarea,.control input[type=number]{width:100%;min-width:0;color:var(--ink);background:#fffdf8;border:1px solid #bdcbc0;border-radius:8px;padding:10px;font-size:16px}.hint{color:#5d6f66;font-size:13px;line-height:1.5}.metric{font-variant-numeric:tabular-nums;font-size:14px;font-weight:650}.game-status{padding:14px 0;font-size:15px;font-weight:650;line-height:1.5}.view-toolbar{flex-wrap:wrap;align-items:center;gap:8px;padding:4px 0;display:flex}.view-label{color:var(--muted);margin-right:4px;font-size:12px;font-weight:650}.feedback-row{flex-wrap:wrap;gap:8px;margin:12px 0;display:flex}.feedback .control{max-width:650px}.loading,.load-error{color:var(--muted);padding:35px 0}footer{border-top:1px solid var(--line);color:var(--muted);flex-wrap:wrap;justify-content:space-between;gap:14px;margin-top:35px;padding:20px 0 12px;font-size:11px;display:flex}footer a{color:inherit}.voxel-toolbar{flex-wrap:wrap;gap:8px;display:flex}.voxel-accessible{grid-template-columns:repeat(6,1fr);gap:5px;margin-top:12px;display:grid}.voxel-accessible .button{min-height:36px;padding:6px;font-size:11px}.voxel-accessible button[aria-pressed=false]{background:#eef1e9}.voxel-accessible button[aria-pressed=true]{color:#59481c;background:#efd283}.live-overlay{pointer-events:none;color:var(--ink);background:#fffdf3e8;border-radius:8px;padding:7px 11px;font-size:12px;position:absolute;top:14px;left:14px}@media (max-width:600px){.lab{padding:16px}.lab-header{gap:10px}.brand{font-size:17px}.sun{font-size:28px}.development{padding:6px 9px;font-size:10px}.hero{padding-top:30px}.hero>p:not(.eyebrow){font-size:16px}.concept{grid-template-columns:1fr}.concept-art{max-height:150px;padding:14px}.concept-art svg{max-width:260px;max-height:130px}.concept-copy{padding:20px}.concept strong{font-size:23px}.game-heading{align-items:flex-start;gap:12px}.game-heading .button{white-space:nowrap;padding:8px 10px}.game-scene{height:300px}.game-controls{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.game-controls .button{width:100%}.game-controls>.game-panel{grid-column:1/-1}.view-toolbar{gap:6px}.view-toolbar .button{padding:8px 10px;font-size:12px}footer{flex-direction:column;gap:8px}.voxel-accessible{grid-template-columns:repeat(4,1fr)}}.view-corner{z-index:3;-webkit-user-select:none;user-select:none;width:122px;position:absolute;top:8px;right:8px}.view-cube-space{perspective:240px;pointer-events:none;place-items:center;height:90px;display:grid}.view-cube{width:48px;height:48px;transform-style:preserve-3d;position:relative}.cube-face{color:#526c60;backface-visibility:hidden;pointer-events:auto;touch-action:manipulation;background:#fffdf3ef;border:1px solid #8b9e90;width:48px;height:48px;padding:0;font-size:9px;font-weight:750;position:absolute;inset:0}.cube-face:hover{color:#354a40;background:#eed68b}.cube-front{transform:translateZ(24px)}.cube-back{transform:rotateY(180deg)translateZ(24px)}.cube-right{transform:rotateY(90deg)translateZ(24px)}.cube-left{transform:rotateY(-90deg)translateZ(24px)}.cube-top{transform:rotateX(90deg)translateZ(24px)}.cube-bottom{transform:rotateX(-90deg)translateZ(24px)}.cube-actions{justify-content:center;gap:4px;display:flex}.cube-actions .button{background:#fffdf3da;min-height:44px;padding:5px 8px;font-size:10px}@media (prefers-reduced-motion:reduce){.concept{transition:none}.concept:hover{transform:none}}html{overflow-y:scroll}.concept{touch-action:manipulation;text-decoration:none}.concept-art .outline{fill:none;stroke:currentColor;stroke-width:5px}.pocket .concept-art{color:#245d4c;background:#d6e6df}.deflectors .concept-art{color:#416d97;background:#dce8f3}.builddestroy .concept-art{color:#855d39;background:#ece0d4}.hero .play-guide{max-width:650px;font-size:14px;line-height:1.6}@media (max-width:360px){.brand{font-size:15px}.lab-header{gap:6px}.development{padding:6px;font-size:9px}h1{letter-spacing:-1px}}