diff --git a/src/components/LayoutStep.tsx b/src/components/LayoutStep.tsx
index bde04f1..40e739c 100644
--- a/src/components/LayoutStep.tsx
+++ b/src/components/LayoutStep.tsx
@@ -298,6 +298,16 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
     }
   };
 
+  // --- ДОБАВЛЕНО: Очистка при выходе мыши ---
+  const handleMouseLeave = () => {
+      setDragging(null);
+      setPhantomMainAxis(null);
+      setHoveredMainSplit(null);
+      setHoveredCell(null);
+      setHoveredPartition(null);
+      setPhantomPartition(null);
+  };
+
   // --- RENDER ---
   const renderCellsAndPartitions = () => {
     const elements = [];
@@ -430,7 +440,12 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
 
           <div className="flex-1 bg-slate-800/30 flex items-center justify-center p-4 overflow-hidden relative">
                 <div className="relative shadow-2xl bg-[#1e293b] border border-slate-600 rounded-sm overflow-hidden" style={{ width: aspectRatio > 1 ? 'auto' : '100%', height: aspectRatio > 1 ? '100%' : 'auto', aspectRatio: `${1/aspectRatio}`, maxHeight: '100%', maxWidth: '100%', cursor: mode === 'lines' ? (dragging ? 'grabbing' : hoveredMainSplit ? 'col-resize' : 'crosshair') : (dragging ? 'grabbing' : hoveredPartition ? 'grab' : hoveredCell ? 'crosshair' : 'default') }}>   
-                   <svg ref={svgRef} viewBox={`0 0 ${viewBoxW} ${viewBoxH}`} className="w-full h-full touch-none block" onMouseMove={handleMouseMove} onMouseDown={handleMouseDown} onMouseUp={() => setDragging(null)} onMouseLeave={() => setDragging(null)} onContextMenu={(e) => e.preventDefault()}>
+                   <svg ref={svgRef} viewBox={`0 0 ${viewBoxW} ${viewBoxH}`} className="w-full h-full touch-none block" 
+                        onMouseMove={handleMouseMove} 
+                        onMouseDown={handleMouseDown} 
+                        onMouseUp={() => setDragging(null)} 
+                        onMouseLeave={handleMouseLeave} // ДОБАВЛЕН ОБРАБОТЧИК
+                        onContextMenu={(e) => e.preventDefault()}>
                       <defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="rgba(255,255,255,0.03)" strokeWidth="1"/></pattern></defs>
                       <rect width="100%" height="100%" fill="url(#grid)" />
                       {renderCellsAndPartitions()}