.file-lab main{max-width:1420px}.file-lab .lab-layout{display:grid;grid-template-columns:minmax(260px,420px) minmax(0,1fr);gap:24px}.lab-card{padding:24px;border:1px solid var(--line,#dbe4f0);border-radius:16px;background:var(--panel,#fff)}.lab-drop{display:block;width:100%;min-height:100px;border:2px dashed var(--brand,#0068b4);border-radius:12px;text-align:center;padding:20px;background:var(--panel,#fff);color:var(--text,#0a1534);cursor:pointer}.lab-drop:focus-visible{outline:3px solid #008ad8;outline-offset:3px}.lab-preview{display:block;max-width:100%;max-height:600px;object-fit:contain;margin:16px auto;background:repeating-conic-gradient(#ddd 0% 25%,#fff 0% 50%) 50%/20px 20px}.lab-canvas{width:100%;height:auto;touch-action:none;cursor:crosshair}.lab-empty{padding:40px 16px;text-align:center;color:var(--muted)}.lab-metrics{font-size:.9rem;overflow-wrap:anywhere}.lab-status{min-height:2em}.lab-options[hidden],.file-lab [hidden]{display:none!important}.lab-help{font-size:.9rem;line-height:1.6}.lab-rects{padding-left:24px}.lab-rects button{margin-left:12px}.file-lab textarea{min-height:240px;width:100%}.file-lab label{display:block;margin:12px 0}.file-lab input,.file-lab select{width:100%}.file-lab input[type=checkbox]{width:auto}.file-lab nav.lab-tools{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0 24px}.lab-tools a{padding:10px 14px;border:1px solid var(--line);border-radius:8px;min-height:44px}.lab-tools a[aria-current=page]{background:var(--brand,#0068b4);color:white}@media(max-width:800px){.file-lab .lab-layout{grid-template-columns:1fr}.lab-card{padding:16px}}