.splash-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:200;display:flex;align-items:center;justify-content:center;background:#0a1016f0;opacity:1;transition:opacity .5s ease}.splash-overlay-exit{opacity:0}.splash-content{display:flex;flex-direction:column;align-items:center;max-width:22rem;padding:1.5rem}.splash-image{width:70vw;max-width:18rem;height:auto;border-radius:1rem;opacity:0;animation:splash-fade-in 1.2s ease .2s forwards}.splash-text{margin-top:1.8rem;text-align:center;color:#ccd4dc;font-family:Georgia,Times New Roman,serif;font-size:1.05rem;line-height:1.7;min-height:4.5rem;opacity:0;transition:opacity .5s ease}.splash-text-visible{opacity:1}@keyframes splash-fade-in{0%{opacity:0;transform:scale(.96)}to{opacity:1;transform:scale(1)}}html,body{margin:0;padding:0;width:100%;height:100%;overflow:hidden;background:#1b2a3a;touch-action:none}#app{display:flex;width:100%;height:100%}#gl-canvas{display:block;flex:1 1 auto;min-width:0;min-height:0}#control-panel{flex:0 0 36rem;height:100%}#app[data-panel=hidden] #control-panel{display:none}@media (max-width: 60rem){#control-panel{flex:0 0 22rem}}#unsupported-message:not([hidden]){position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;padding:2rem;color:#eef2f6;font-family:system-ui,sans-serif;text-align:center;background:#1b2a3a}.sculpt-toolbar{position:absolute;top:.6rem;left:.6rem;z-index:10;display:flex;flex-direction:column;gap:.4rem}.sculpt-tool-btn{padding:.35rem .7rem;border:1px solid rgba(255,255,255,.25);border-radius:6px;background:#16222fbf;color:#aab4bf;font-family:system-ui,sans-serif;font-size:.8rem;font-weight:600;cursor:pointer;touch-action:manipulation}.sculpt-tool-btn:active{background:#16222ff2}.sculpt-tool-btn.sculpt-tool-active{background:#3c82c8d9;border-color:#64aae699;color:#eef2f6}.sculpt-tool-icon{padding:.15rem;border:2px solid transparent;border-radius:8px;background:#0000008c}.sculpt-tool-icon img{display:block;width:3.2rem;height:auto;pointer-events:none}.sculpt-tool-icon:active{background:#000000b3}.sculpt-tool-icon.sculpt-tool-active{background:#0000008c;border-color:#ffffff80}.sculpt-bottom-bar{position:absolute;bottom:.6rem;left:.6rem;z-index:10;display:flex;flex-wrap:wrap;gap:.3rem}#app[data-panel=hidden] .dev-tool{display:none}.sculpt-toolbar-preset{padding:.35rem .5rem;border:1px solid rgba(255,255,255,.25);border-radius:6px;background:#16222fbf;color:#aab4bf;font-family:system-ui,sans-serif;font-size:.8rem;cursor:pointer;touch-action:manipulation}.settings-toggle{display:flex;align-items:center;justify-content:center;position:absolute;top:.6rem;right:.6rem;z-index:10;width:2.5rem;height:2.5rem;font-size:1.3rem;border:none;border-radius:6px;cursor:pointer;font-family:system-ui,sans-serif;color:#eef2f6;background:#16222fbf;touch-action:manipulation}.settings-toggle:active{background:#16222ff2}.help-toggle{display:flex;align-items:center;justify-content:center;position:absolute;top:.6rem;right:3.4rem;z-index:10;width:2.5rem;height:2.5rem;font-size:1.1rem;font-weight:700;border:none;border-radius:6px;cursor:pointer;font-family:system-ui,sans-serif;color:#eef2f6;background:#16222fbf;touch-action:manipulation}.help-toggle:active{background:#16222ff2}.help-overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:50;display:flex;align-items:center;justify-content:center;background:#0000008c}.help-overlay[hidden]{display:none}.help-panel{width:min(90%,28rem);max-height:80vh;overflow-y:auto;background:#1a2736;color:#eef2f6;border-radius:10px;padding:1.2rem 1.4rem;font-family:system-ui,sans-serif}.help-panel h2{margin:0 0 .8rem;font-size:1.1rem;font-weight:600}.help-item{border-bottom:1px solid rgba(255,255,255,.1)}.help-item:last-child{border-bottom:none}.help-item summary{padding:.7rem 0;cursor:pointer;font-size:.9rem;font-weight:500;list-style:none}.help-item summary:before{content:"▸ ";font-size:.75rem}.help-item[open] summary:before{content:"▾ "}.help-item p{margin:0 0 .7rem 1rem;font-size:.85rem;line-height:1.45;color:#b0bec5}.settings-back{display:none}@media (max-width: 48rem){#app{display:block;position:relative}#gl-canvas,#control-panel{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%}#control-panel{flex:none}#app[data-panel=visible] #gl-canvas,#app[data-panel=visible] .settings-toggle,#app[data-panel=visible] .help-toggle,#app[data-panel=visible] .sculpt-toolbar,#app[data-panel=visible] .sculpt-bottom-bar{display:none}#app[data-panel=visible] .settings-back{display:flex;align-items:center;justify-content:center;position:absolute;top:0;left:0;right:0;height:2.8rem;z-index:10;font-size:.85rem;font-weight:600;gap:.3rem;border:none;cursor:pointer;font-family:system-ui,sans-serif;color:#eef2f6;background:#0f1922;border-radius:0;touch-action:manipulation}.settings-back:active{background:#1b2a3a}}#control-panel{box-sizing:border-box;padding:.75rem 1rem 1.5rem;overflow-y:auto;background:#16222f;color:#eef2f6;font-family:system-ui,sans-serif;font-size:.85rem;touch-action:auto}#control-panel h2{font-size:.95rem;margin:1rem 0 .4rem;color:#b9c6d4;break-after:avoid}.control-panel-columns>h2:first-child{margin-top:0}.control-panel-columns{column-count:2;column-gap:1.25rem}.control-panel-row,.control-panel-checkbox-row,.control-panel-buttons,.control-panel-save-as-row,.control-panel-readout{break-inside:avoid}.control-panel-run-row{display:flex;gap:.4rem;margin-bottom:.75rem}.control-panel-run-button{flex:2 1 auto;padding:.5rem;font-size:.9rem;font-weight:600;color:#eef2f6;background:#2b6ca3;border:none;border-radius:4px;cursor:pointer}.control-panel-run-button:active{background:#1f5480}.control-panel-restart-button{flex:1 1 auto;padding:.5rem;font-size:.9rem;color:#eef2f6;background:#29405a;border:1px solid #3a5878;border-radius:4px;cursor:pointer}.control-panel-restart-button:active{background:#1f3247}.control-panel-row{margin:.5rem 0}.control-panel-row-label{display:flex;justify-content:space-between;gap:.5rem;align-items:baseline;margin-bottom:.15rem}.control-panel-row-name{min-width:0;cursor:help;text-decoration:underline dotted rgba(185,198,212,.35);text-underline-offset:.2em}.control-panel-row-value{flex:0 0 auto;white-space:nowrap}.control-panel-row-readout{font-variant-numeric:tabular-nums;color:#9fd3ff}.control-panel-row-unit{margin-left:.25rem;font-size:.78rem;color:#8098ad;cursor:help}.control-panel-row input[type=range]{width:100%;touch-action:pan-y}.control-panel-checkbox-row{display:flex;align-items:center;gap:.4rem;margin:.35rem 0 .75rem}.control-panel-buttons{display:flex;flex-wrap:wrap;gap:.4rem;margin:.4rem 0}.control-panel-buttons button{flex:1 1 auto;padding:.4rem .6rem;font-size:.8rem;color:#eef2f6;background:#29405a;border:1px solid #3a5878;border-radius:4px;cursor:pointer}.control-panel-buttons button:active{background:#1f3247}.control-panel-save-as-row:not([hidden]){display:flex;gap:.4rem;margin:.4rem 0}.control-panel-save-as-row input[type=text]{flex:1 1 auto;min-width:0;padding:.3rem .4rem;background:#0f1922;color:#eef2f6;border:1px solid #3a5878;border-radius:4px}.control-panel-error{color:#ff9d8a;font-size:.78rem;margin:.25rem 0}.control-panel-preset-select{width:100%;margin:.4rem 0;padding:.4rem .5rem;font-size:.8rem;color:#eef2f6;background:#29405a;border:1px solid #3a5878;border-radius:4px;cursor:pointer}.control-panel-readout{padding:.5rem;background:#0f1922;border-radius:4px;line-height:1.5;white-space:pre-wrap}@media (max-width: 60rem){.control-panel-columns{column-count:1}}@media (max-width: 48rem){#control-panel{padding-top:3.4rem;overflow-y:scroll;scrollbar-width:auto;scrollbar-color:#3a5878 #16222f}.control-panel-row input[type=range]{width:80%}#control-panel::-webkit-scrollbar{width:28px}#control-panel::-webkit-scrollbar-track{background:#16222f}#control-panel::-webkit-scrollbar-thumb{background:#3a5878;border-radius:6px}}