.cgc-lesson-lab .cgc-sheet-open{display:block;width:100%;padding:0;border:0;background:transparent;color:inherit;cursor:zoom-in;text-align:inherit}.cgc-lesson-lab .cgc-sheet-open:focus-visible{outline:3px solid #1f9ab6;outline-offset:4px}.cgc-sheet-viewer{box-sizing:border-box;width:min(1500px,96vw);max-width:96vw;height:94dvh;max-height:94dvh;padding:0;border:1px solid #c8dce2;border-radius:12px;background:#f2f7f9;color:#163a43;overflow:hidden}.cgc-sheet-viewer[open]{display:flex;flex-direction:column}.cgc-sheet-viewer::backdrop{background:rgba(6,25,38,.75)}.cgc-sheet-toolbar{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:12px 18px;background:#fff;border-bottom:1px solid #d7e4e8;flex-shrink:0}.cgc-sheet-caption{font:14px/1.4 system-ui,sans-serif;overflow-wrap:anywhere}.cgc-sheet-actions{display:flex;gap:6px;flex-shrink:0}.cgc-sheet-actions button{font:14px/1.2 system-ui,sans-serif;padding:10px 13px;border:1px solid #bfd9e0;border-radius:6px;background:#edf6f8;color:#145d70;cursor:pointer;min-height:40px}.cgc-sheet-actions button:hover{background:#d6edf2}.cgc-sheet-actions button:focus-visible{outline:3px solid #1f9ab6;outline-offset:1px}.cgc-sheet-actions button[hidden]{display:none}.cgc-sheet-stage{flex:1;min-height:0;overflow:auto;overscroll-behavior:contain;padding:12px;box-sizing:border-box;touch-action:pan-x pan-y pinch-zoom}.cgc-sheet-stage img{display:block;max-width:none!important;max-height:none!important;height:auto;margin:0 auto;background:white;box-shadow:0 2px 14px #163a431a}.cgc-sheet-help{margin:0;padding:10px 18px;font:12px/1.4 system-ui,sans-serif;background:white;color:#4a6570;flex-shrink:0}@media(max-width:650px){.cgc-sheet-toolbar{flex-direction:column;align-items:stretch;gap:8px;padding:10px}.cgc-sheet-actions{justify-content:space-between;gap:4px}.cgc-sheet-actions button{padding:9px 10px}.cgc-sheet-help{padding:8px 12px;font-size:11px}}