diff --git a/lib/ui/teacher_dashboard.dart b/lib/ui/teacher_dashboard.dart
index 5223903..7cc97be 100644
--- a/lib/ui/teacher_dashboard.dart
+++ b/lib/ui/teacher_dashboard.dart
@@ -136,62 +136,68 @@ class _TeacherDashboardState extends State<TeacherDashboard> {
             const SizedBox(height: 16),
 
             // 📊 [그리드 레이아웃 메뉴] 시후의 카드 컴포넌트 스타일 적용
-            // 🖥️ 데스크톱 브라우저에서 카드가 지나치게 커지지 않도록 최대 너비를 제한한다.
-            Center(
-              child: ConstrainedBox(
-                constraints: const BoxConstraints(maxWidth: 700),
-                child: Padding(
-                  padding: const EdgeInsets.symmetric(horizontal: 24.0),
-                  child: GridView.count(
-                    shrinkWrap: true,
-                    physics: const NeverScrollableScrollPhysics(),
-                    crossAxisCount: 2,
-                    crossAxisSpacing: 16,
-                    mainAxisSpacing: 16,
-                    childAspectRatio: 0.95,
-                    children: [
-                      _buildModernCard(
-                        icon: Icons.assignment_turned_in_rounded,
-                        title: '실시간 출석 확인',
-                        subtitle: '학생 제출 로그 모니터링',
-                        color: Colors.blue,
-                        onTap: () => Navigator.push(
-                          context,
-                          MaterialPageRoute(
-                            builder: (context) => const TeacherAttendancePage(),
+            LayoutBuilder(
+              builder: (context, constraints) {
+                // 🖥️ 웹(넓은 화면)은 한 줄에 5개씩, 폰(좁은 화면)은 기존 2개 그대로.
+                final bool isWide = constraints.maxWidth >= 800;
+                return Center(
+                  child: ConstrainedBox(
+                    constraints: BoxConstraints(maxWidth: isWide ? 1300 : 700),
+                    child: Padding(
+                      padding: const EdgeInsets.symmetric(horizontal: 24.0),
+                      child: GridView.count(
+                        shrinkWrap: true,
+                        physics: const NeverScrollableScrollPhysics(),
+                        crossAxisCount: isWide ? 5 : 2,
+                        crossAxisSpacing: 16,
+                        mainAxisSpacing: 16,
+                        childAspectRatio: 0.95,
+                        children: [
+                          _buildModernCard(
+                            icon: Icons.assignment_turned_in_rounded,
+                            title: '실시간 출석 확인',
+                            subtitle: '학생 제출 로그 모니터링',
+                            color: Colors.blue,
+                            onTap: () => Navigator.push(
+                              context,
+                              MaterialPageRoute(
+                                builder: (context) =>
+                                    const TeacherAttendancePage(),
+                              ),
+                            ),
                           ),
-                        ),
-                      ),
-                      _buildModernCard(
-                        icon: Icons.manage_accounts_rounded,
-                        title: '학생 계정 관리',
-                        subtitle: '계정 추가 및 강제 리셋',
-                        color: Colors.orange,
-                        onTap: () => Navigator.push(
-                          context,
-                          MaterialPageRoute(
-                            builder: (context) =>
-                                const TeacherStudentManagementPage(),
+                          _buildModernCard(
+                            icon: Icons.manage_accounts_rounded,
+                            title: '학생 계정 관리',
+                            subtitle: '계정 추가 및 강제 리셋',
+                            color: Colors.orange,
+                            onTap: () => Navigator.push(
+                              context,
+                              MaterialPageRoute(
+                                builder: (context) =>
+                                    const TeacherStudentManagementPage(),
+                              ),
+                            ),
                           ),
-                        ),
-                      ),
-                      _buildModernCard(
-                        icon: Icons.tablet_mac_rounded,
-                        title: '스마트기기 반출 대장',
-                        subtitle: '패드 반출 신청 승인/거절',
-                        color: Colors.teal,
-                        onTap: () => Navigator.push(
-                          context,
-                          MaterialPageRoute(
-                            builder: (context) =>
-                                const DeviceCheckoutLedgerPage(),
+                          _buildModernCard(
+                            icon: Icons.tablet_mac_rounded,
+                            title: '스마트기기 반출 대장',
+                            subtitle: '패드 반출 신청 승인/거절',
+                            color: Colors.teal,
+                            onTap: () => Navigator.push(
+                              context,
+                              MaterialPageRoute(
+                                builder: (context) =>
+                                    const DeviceCheckoutLedgerPage(),
+                              ),
+                            ),
                           ),
-                        ),
+                        ],
                       ),
-                    ],
+                    ),
                   ),
-                ),
-              ),
+                );
+              },
             ),
             const SizedBox(height: 32),
           ],