html,body{margin:0;width:100%;height:100%;overflow:hidden;font-family:system-ui,-apple-system,sans-serif;background:#0d0d14}canvas{display:block;width:100vw;height:100vh}#guiL{position:fixed;top:16px;left:16px;z-index:100;pointer-events:none}#gui{position:fixed;top:16px;right:16px;z-index:100;pointer-events:none}.gui-panel{pointer-events:all;background:#0a0a12e0;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:16px 18px;color:#e0e8ff;width:240px;box-shadow:0 8px 32px #0009}.gui-title{font-size:15px;font-weight:700;letter-spacing:.04em;margin-bottom:14px;color:#a8c8ff}.gui-section{margin-bottom:14px;border-bottom:1px solid rgba(255,255,255,.06);padding-bottom:14px}.gui-section:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.gui-label{font-size:10px;text-transform:uppercase;letter-spacing:.12em;color:#6888bb;margin-bottom:8px}.file-input{width:100%;font-size:11px;color:#89b;background:#ffffff0a;border:1px solid rgba(255,255,255,.1);border-radius:6px;padding:4px 6px;cursor:pointer;box-sizing:border-box}.model-btns{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:8px}.model-btn,.shape-btn{flex:1 1 auto;padding:5px 4px;font-size:11px;font-weight:600;border:1px solid rgba(255,255,255,.12);border-radius:6px;background:#ffffff0d;color:#8aacdd;cursor:pointer;transition:background .15s,color .15s,border-color .15s}.model-btn:hover,.shape-btn:hover{background:#64a0ff26;color:#c4daff;border-color:#64a0ff59}.model-btn.active,.shape-btn.active{background:#4a9eff40;color:#d0e8ff;border-color:#4a9eff99}.model-desc{font-size:11px;line-height:1.55;color:#89b;min-height:32px;padding:4px 0}.slider-row{display:flex;align-items:center;gap:6px;margin-bottom:6px}.slider-label{font-size:11px;color:#89b;width:86px;flex-shrink:0}.slider-row input[type=range]{flex:1;accent-color:#4a9eff;height:4px;cursor:pointer}.slider-val{font-size:11px;color:#a0bce0;width:32px;text-align:right;font-variant-numeric:tabular-nums}.checkbox-row{display:flex;align-items:center;gap:8px;font-size:11px;color:#89b;cursor:pointer;margin-top:4px}.checkbox-row input{accent-color:#4a9eff}.color-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px;font-size:11px;color:#89b}.color-row input[type=color]{width:40px;height:24px;border:none;border-radius:4px;cursor:pointer;background:none;padding:0}.gui-hint{font-size:10px;color:#456;text-align:center;margin-top:10px;letter-spacing:.04em;line-height:1.6}