diff --git a/lib/ui/main_dashboard.dart b/lib/ui/main_dashboard.dart
index c45b618..fbe8c9a 100644
--- a/lib/ui/main_dashboard.dart
+++ b/lib/ui/main_dashboard.dart
@@ -629,28 +629,39 @@ class _MainDashboardState extends State<MainDashboard> {
       child: LayoutBuilder(
         builder: (context, constraints) {
           final double width = constraints.maxWidth;
+          // 🔲 정사각형 1칸 기준 4×3 배치 — 화면이 넓어도 6칸까지 늘리지 않고 4칸에서 멈춘다.
           final int crossAxisCount = width < 420
               ? 2
               : width < 700
               ? 3
-              : width < 1000
-              ? 4
-              : 6;
+              : 4;
+          // 📏 캔버스 자체를 700px에서 더 넓어지지 않게 막고, 타일 크기를 전체적으로
+          // 20% 줄여서 화면이 꽉 차 보이지 않고 여백이 생기게 한다.
+          const double maxGridWidth = 700;
+          final double cappedWidth = width < maxGridWidth
+              ? width
+              : maxGridWidth;
+          final double gridWidth = cappedWidth * 0.8;
 
-          return StaggeredGrid.count(
-            crossAxisCount: crossAxisCount,
-            mainAxisSpacing: 12,
-            crossAxisSpacing: 12,
-            children: [
-              for (final tile in tiles)
-                StaggeredGridTile.count(
-                  crossAxisCellCount: _spanFor(
-                    tile.id,
-                  ).$1.clamp(1, crossAxisCount),
-                  mainAxisCellCount: _spanFor(tile.id).$2,
-                  child: tile.child,
-                ),
-            ],
+          return Center(
+            child: SizedBox(
+              width: gridWidth,
+              child: StaggeredGrid.count(
+                crossAxisCount: crossAxisCount,
+                mainAxisSpacing: 12,
+                crossAxisSpacing: 12,
+                children: [
+                  for (final tile in tiles)
+                    StaggeredGridTile.count(
+                      crossAxisCellCount: _spanFor(
+                        tile.id,
+                      ).$1.clamp(1, crossAxisCount),
+                      mainAxisCellCount: _spanFor(tile.id).$2,
+                      child: tile.child,
+                    ),
+                ],
+              ),
+            ),
           );
         },
       ),