diff --git a/index.php b/index.php
index c25c892..01840d1 100644
--- a/index.php
+++ b/index.php
@@ -179,20 +179,20 @@
             <!-- Mobile Menu -->
             <div id="mobile-menu" class="hidden md:hidden border-t border-slate-200 py-4">
                 <div class="flex flex-col gap-3">
-                    <a href="sales_scenario/" class="text-sm font-medium text-slate-600 hover:text-brand-600 transition-colors px-2 py-2 hover:bg-slate-50 rounded-lg">영업 시나리오</a>
-                    <a href="sales_manager_scenario/" class="text-sm font-medium text-slate-600 hover:text-brand-600 transition-colors px-2 py-2 hover:bg-slate-50 rounded-lg">매니저 시나리오</a>
-                    <a href="salesmanagement/" class="text-sm font-medium text-slate-600 hover:text-brand-600 transition-colors px-2 py-2 hover:bg-slate-50 rounded-lg">영업관리</a>
-                    <a href="corp/kodata.php" class="text-sm font-medium text-slate-600 hover:text-brand-600 transition-colors px-2 py-2 hover:bg-slate-50 rounded-lg">기업분석</a>
+                    <a href="sales_scenario/" class="text-sm font-medium text-slate-600 hover:text-brand-600 transition-colors px-2 py-2 hover:bg-slate-50 rounded-lg" onclick="closeMobileMenu()">영업 시나리오</a>
+                    <a href="sales_manager_scenario/" class="text-sm font-medium text-slate-600 hover:text-brand-600 transition-colors px-2 py-2 hover:bg-slate-50 rounded-lg" onclick="closeMobileMenu()">매니저 시나리오</a>
+                    <a href="salesmanagement/" class="text-sm font-medium text-slate-600 hover:text-brand-600 transition-colors px-2 py-2 hover:bg-slate-50 rounded-lg" onclick="closeMobileMenu()">영업관리</a>
+                    <a href="corp/kodata.php" class="text-sm font-medium text-slate-600 hover:text-brand-600 transition-colors px-2 py-2 hover:bg-slate-50 rounded-lg" onclick="closeMobileMenu()">기업분석</a>
                     <?php if (isset($_SESSION['userid']) && $_SESSION['userid'] != ''): ?>
                         <div class="flex items-center gap-2 px-2 py-2 border-t border-slate-200 mt-2 pt-3">
                             <div class="w-8 h-8 rounded-full bg-slate-200 flex items-center justify-center text-slate-500 font-bold border border-slate-300">
                                 <?= mb_substr($_SESSION['name'], 0, 1) ?>
                             </div>
                             <span class="text-sm font-medium text-slate-700 flex-1"><?= $_SESSION['name'] ?>님</span>
-                            <a href="login/logout.php" class="px-3 py-1.5 bg-slate-100 text-slate-600 text-xs font-bold rounded hover:bg-slate-200 transition-colors border border-slate-200">로그아웃</a>
+                            <a href="login/logout.php" class="px-3 py-1.5 bg-slate-100 text-slate-600 text-xs font-bold rounded hover:bg-slate-200 transition-colors border border-slate-200" onclick="closeMobileMenu()">로그아웃</a>
                         </div>
                     <?php else: ?>
-                        <a href="login/login_form.php" class="px-4 py-2 bg-brand-600 text-white text-sm font-bold rounded-lg hover:bg-brand-700 transition-colors shadow-lg shadow-brand-200 text-center mt-2">
+                        <a href="login/login_form.php" class="px-4 py-2 bg-brand-600 text-white text-sm font-bold rounded-lg hover:bg-brand-700 transition-colors shadow-lg shadow-brand-200 text-center mt-2" onclick="closeMobileMenu()">
                             로그인
                         </a>
                     <?php endif; ?>
@@ -477,7 +477,9 @@
         function init() {
             renderFilters();
             renderGrid();
-            lucide.createIcons();
+            if (typeof lucide !== 'undefined') {
+                lucide.createIcons();
+            }
         }
 
         // Filter Logic
@@ -881,12 +883,17 @@
             }
         };
 
-        // Mobile Menu Toggle
+        // Mobile Menu Functions
         window.toggleMobileMenu = () => {
             const mobileMenu = document.getElementById('mobile-menu');
             const menuIcon = document.getElementById('menu-icon');
             const closeIcon = document.getElementById('close-icon');
             
+            if (!mobileMenu || !menuIcon || !closeIcon) {
+                console.error('Mobile menu elements not found');
+                return;
+            }
+            
             if (mobileMenu.classList.contains('hidden')) {
                 mobileMenu.classList.remove('hidden');
                 menuIcon.classList.add('hidden');
@@ -897,7 +904,22 @@
                 closeIcon.classList.add('hidden');
             }
             
-            lucide.createIcons();
+            // 아이콘 재생성
+            if (typeof lucide !== 'undefined') {
+                lucide.createIcons();
+            }
+        };
+
+        window.closeMobileMenu = () => {
+            const mobileMenu = document.getElementById('mobile-menu');
+            const menuIcon = document.getElementById('menu-icon');
+            const closeIcon = document.getElementById('close-icon');
+            
+            if (mobileMenu && !mobileMenu.classList.contains('hidden')) {
+                mobileMenu.classList.add('hidden');
+                if (menuIcon) menuIcon.classList.remove('hidden');
+                if (closeIcon) closeIcon.classList.add('hidden');
+            }
         };
 
         // Close mobile menu when clicking outside
@@ -909,7 +931,7 @@
                 !mobileMenu.classList.contains('hidden') && 
                 !mobileMenu.contains(e.target) && 
                 !mobileMenuButton.contains(e.target)) {
-                toggleMobileMenu();
+                closeMobileMenu();
             }
         });