.merge-stage{display:flex;flex-direction:column;gap:16px}.merge-controls{align-items:flex-end}.merge-controls .ctrl-group{min-width:0}.merge-hint{color:var(--muted);font-size:14px;margin:0;text-align:center}.merge-hint strong{color:var(--ink-soft)}.merge-canvas-wrap{background:conic-gradient(#e9eef5 90deg,#f5f7ff 90deg 180deg,#e9eef5 180deg 270deg,#f5f7ff 270deg);background-size:22px 22px;border:1px solid var(--line);border-radius:var(--radius);padding:16px;overflow:auto;max-height:70vh;display:flex;justify-content:center}.merge-canvas-wrap canvas{display:block;max-width:100%;height:auto;box-shadow:var(--shadow-md);cursor:default;touch-action:none}.merge-canvas-wrap canvas.over-image{cursor:move}.merge-canvas-wrap canvas.over-handle{cursor:nwse-resize}.merge-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}.merge-controls input[type=number]{font-family:var(--mono);font-weight:700;font-size:15px;color:var(--ink);border:1px solid var(--line-strong);border-radius:8px;padding:8px 12px;outline:0;width:70px;transition:border-color .15s,box-shadow .15s;-moz-appearance:textfield}.merge-controls input[type=number]:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.15)}.merge-controls input[type=number]::-webkit-inner-spin-button,.merge-controls input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}