.bs-lab{margin:1rem 0;border:1px solid #cbd5e1;border-radius:12px;background:#fff;color:#1e293b;overflow:hidden}
.bs-lab summary{min-height:48px;padding:.85rem;font-weight:800;cursor:pointer}
.bs-lab summary:focus-visible,.bs-lab button:focus-visible,.bs-lab input:focus-visible,.bs-lab select:focus-visible{outline:3px solid #f97316;outline-offset:2px}
.bs-lab-body{padding:0 .85rem .85rem;display:grid;gap:.7rem}
.bs-lab-body p{font-size:.83rem;line-height:1.5}
.bs-lab label{display:grid;gap:.25rem;font-size:.82rem;font-weight:700}
.bs-lab select{width:100%;min-height:44px;border:1px solid #94a3b8;border-radius:6px;padding:.4rem;font:inherit;background:#fff;color:inherit}
.bs-lab input[type=range]{width:100%;min-height:44px;accent-color:#f97316;cursor:pointer}
.bs-lab-offset{font:500 .8rem 'JetBrains Mono',monospace}
.bs-lab-stage{position:relative;height:128px;border-radius:8px;background:#0f172a;overflow:hidden}
.bs-lab-stage:before{content:'';position:absolute;left:50%;top:12px;bottom:12px;border-left:1px dashed #64748b}
.bs-lab-brick{position:absolute;height:24px;border-radius:2px;border-top:3px solid #ffffff55}
.bs-lab-moving,.bs-lab-offcut{top:46px}
.bs-lab-moving{background:#f97316}
.bs-lab-support{top:70px;background:#94a3b8}
.bs-lab-offcut{background:repeating-linear-gradient(135deg,#ef4444 0 4px,#ef444455 4px 8px);border:1px dashed #fca5a5}
.bs-lab-stage-label{position:absolute;left:.5rem;color:#e2e8f0;font-size:.7rem;line-height:1.5}
.bs-lab-stage-label:first-child{top:12px}
.bs-lab-stage-label:last-child{bottom:7px}
.bs-lab-buttons{display:grid;grid-template-columns:1fr 1fr;gap:.5rem}
.bs-lab button{min-height:44px;min-width:44px;border:1px solid #94a3b8;border-radius:7px;background:#f8fafc;padding:.5rem;font:700 .8rem 'Plus Jakarta Sans',system-ui,sans-serif;color:#1e293b;cursor:pointer;touch-action:manipulation}
.bs-lab button[data-lab-drop]{background:#f97316;color:#fff;border-color:#f97316}
.bs-lab-report{min-height:3.8em;font-weight:700}
.bs-lab [hidden]{display:none}