diff --git a/index.html b/index.html
index a9f7fb2..ab990f8 100644
--- a/index.html
+++ b/index.html
@@ -27,17 +27,22 @@
         <h2>ITAM 시스템</h2>
         <p>자산 관리 포털에 오신 것을 환영합니다</p>
       </div>
-      <form id="login-form" class="login-form">
-        <div class="form-group">
-          <label for="username">사용자 아이디</label>
-          <input type="text" id="username" placeholder="아이디를 입력하세요" required autofocus />
+      <div id="login-selection" class="login-selection">
+        <div class="role-card" data-role="admin">
+          <div class="role-icon">
+            <i data-lucide="settings"></i>
+          </div>
+          <h3>관리자</h3>
+          <p>시스템 설정 및 자산 마스터 관리</p>
         </div>
-        <div class="form-group">
-          <label for="password">비밀번호</label>
-          <input type="password" id="password" placeholder="비밀번호를 입력하세요" required />
+        <div class="role-card" data-role="user">
+          <div class="role-icon">
+            <i data-lucide="monitor"></i>
+          </div>
+          <h3>실무자</h3>
+          <p>자산 조회 및 현황 확인</p>
         </div>
-        <button type="submit" class="btn-login">로그인</button>
-      </form>
+      </div>
       <div class="login-footer">
         <p>&copy; 2026 BARON Consultant Co,Ltd. All rights reserved.</p>
       </div>
@@ -59,6 +64,14 @@
         </nav>
 
         <div class="header-actions">
+          <div class="role-switcher" id="role-switcher">
+            <span class="role-label user active">실무자</span>
+            <label class="switch">
+              <input type="checkbox" id="role-toggle-checkbox">
+              <span class="slider round"></span>
+            </label>
+            <span class="role-label admin">관리자</span>
+          </div>
           <button id="btn-admin-page" class="hidden"></button> <!-- JS 호환용 숨김 -->
           <button id="btn-open-guide-header" class="btn btn-outline" title="프로세스 가이드">
             <i data-lucide="book-open"></i> 가이드
diff --git a/src/core/state.ts b/src/core/state.ts
index a2a4daf..b66ebc9 100644
--- a/src/core/state.ts
+++ b/src/core/state.ts
@@ -38,6 +38,7 @@ export interface AppState {
   activeSubTab: string;
   masterData: MasterAssetData;
   activeCharts: any[];
+  currentUserRole: 'admin' | 'user';
 }
 
 // 초기 상태
@@ -45,6 +46,7 @@ export const state: AppState = {
   activeCategory: 'hw',
   activeSubTab: '서버', // 대시보드 제거됨에 따라 기본값 변경
   activeCharts: [],
+  currentUserRole: 'user',
   masterData: {
     users: [],
     pc: [], server: [], storage: [], network: [],
diff --git a/src/main.ts b/src/main.ts
index 6a268fd..7b50fc7 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -136,35 +136,76 @@ function initApp() {
   window.addEventListener('refresh-view', () => refreshView());
 }
 
+/**
+ * 헤더 역할 전환 토글 로직
+ */
+function initRoleSwitcher() {
+  const checkbox = document.getElementById('role-toggle-checkbox') as HTMLInputElement;
+  const userLabel = document.querySelector('.role-label.user');
+  const adminLabel = document.querySelector('.role-label.admin');
+
+  if (!checkbox || !userLabel || !adminLabel) return;
+
+  checkbox.addEventListener('change', () => {
+    if (checkbox.checked) {
+      alert('관리자 모드는 현재 준비 중입니다. 나중에 관리자 전용 페이지와 연결될 예정입니다.');
+      checkbox.checked = false; // UI 강제 되돌리기
+      return;
+    }
+    
+    // 실무자 모드 전환 (현재는 Admin 진입이 차단되므로 사실상 fallback 로직)
+    state.currentUserRole = 'user';
+    adminLabel.classList.remove('active');
+    userLabel.classList.add('active');
+    document.body.classList.remove('admin-mode');
+  });
+}
+
 /**
  * 로그인 처리 로직
  */
 function handleLogin() {
   const loginContainer = document.getElementById('login-container');
   const appLayout = document.getElementById('app-layout');
-  const loginForm = document.getElementById('login-form') as HTMLFormElement;
+  const roleCards = document.querySelectorAll('.role-card');
 
-  if (!loginForm || !loginContainer || !appLayout) return;
+  if (!loginContainer || !appLayout || roleCards.length === 0) return;
 
-  loginForm.addEventListener('submit', (e) => {
-    e.preventDefault();
-    
-    // Mock 로그인: 아이디/비밀번호 입력 여부만 확인
-    const username = (document.getElementById('username') as HTMLInputElement).value;
-    const password = (document.getElementById('password') as HTMLInputElement).value;
-
-    if (username && password) {
-      console.log('🔓 Login successful (Mock)');
+  roleCards.forEach(card => {
+    card.addEventListener('click', () => {
+      const role = card.getAttribute('data-role');
       
-      // UI 전환
-      loginContainer.style.display = 'none';
-      appLayout.style.display = 'flex';
-      
-      // 앱 초기화 시작
-      initApp();
-    } else {
-      alert('아이디와 비밀번호를 입력해주세요.');
-    }
+      if (role === 'admin') {
+        alert('관리자 모드는 현재 준비 중입니다. 실무자 모드를 이용해 주세요.');
+        return;
+      }
+
+      if (role === 'user') {
+        console.log('🔓 Entering as Practitioner');
+        
+        // 초기 토글 상태 설정 (실무자 고정)
+        const checkbox = document.getElementById('role-toggle-checkbox') as HTMLInputElement;
+        if (checkbox) checkbox.checked = false;
+        state.currentUserRole = 'user';
+
+        // UI 전환
+        loginContainer.style.display = 'none';
+        appLayout.style.display = 'flex';
+        
+        // 역할 스위처 및 앱 초기화 시작
+        initRoleSwitcher();
+        initApp();
+        
+        // 로고 클릭 시 초기화면 복귀 로직 (한 번만 등록)
+        const brand = document.querySelector('.brand') as HTMLElement;
+        if (brand) {
+          brand.style.cursor = 'pointer';
+          brand.onclick = () => {
+            location.reload(); // 즉시 초기화면으로 복귀
+          };
+        }
+      }
+    });
   });
 }
 
diff --git a/src/styles/common.css b/src/styles/common.css
index 8aa830f..d340b05 100644
--- a/src/styles/common.css
+++ b/src/styles/common.css
@@ -229,6 +229,85 @@ body {
   }
 }
 
+/* --- Role Switcher Toggle --- */
+.role-switcher {
+  display: flex;
+  align-items: center;
+  gap: 0.75rem;
+  margin-right: 0.5rem;
+  padding: 0 0.75rem;
+  border-right: 1px solid var(--border-color);
+  height: 24px;
+}
+
+.role-label {
+  font-size: 11px;
+  font-weight: 700;
+  color: var(--text-muted);
+  transition: color 0.2s;
+}
+
+.role-label.active {
+  color: var(--primary-color);
+}
+
+.role-label.admin.active {
+  color: var(--color-orange);
+}
+
+/* Toggle Switch Base */
+.switch {
+  position: relative;
+  display: inline-block;
+  width: 34px;
+  height: 18px;
+}
+
+.switch input {
+  opacity: 0;
+  width: 0;
+  height: 0;
+}
+
+.slider {
+  position: absolute;
+  cursor: pointer;
+  top: 0; left: 0; right: 0; bottom: 0;
+  background-color: #ccc;
+  transition: .4s;
+}
+
+.slider:before {
+  position: absolute;
+  content: "";
+  height: 12px;
+  width: 12px;
+  left: 3px;
+  bottom: 3px;
+  background-color: white;
+  transition: .4s;
+}
+
+input:checked + .slider {
+  background-color: var(--color-orange);
+}
+
+input:focus + .slider {
+  box-shadow: 0 0 1px var(--color-orange);
+}
+
+input:checked + .slider:before {
+  transform: translateX(16px);
+}
+
+.slider.round {
+  border-radius: 34px;
+}
+
+.slider.round:before {
+  border-radius: 50%;
+}
+
 /* --- Global Actions & Buttons --- */
 .header-actions {
   display: flex;
diff --git a/src/styles/login.css b/src/styles/login.css
index 9eacc9b..af288c7 100644
--- a/src/styles/login.css
+++ b/src/styles/login.css
@@ -11,12 +11,12 @@
 
 .login-card {
   width: 100%;
-  max-width: 400px;
+  max-width: 500px;
   background-color: var(--white);
   border: 1px solid var(--border-color);
   border-radius: 12px;
-  padding: 2.5rem;
-  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
+  padding: 3rem;
+  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
   animation: slideUp 0.4s ease-out;
 }
 
@@ -27,79 +27,89 @@
 
 .login-header {
   text-align: center;
-  margin-bottom: 2rem;
+  margin-bottom: 2.5rem;
 }
 
 .login-logo {
-  height: 48px;
-  margin-bottom: 1rem;
+  height: 52px;
+  margin-bottom: 1.25rem;
 }
 
 .login-header h2 {
-  font-size: 1.5rem;
+  font-size: 1.75rem;
   font-weight: 800;
   color: var(--text-main);
   margin-bottom: 0.5rem;
 }
 
 .login-header p {
-  font-size: 0.875rem;
-  color: var(--text-muted);
-}
-
-.login-form {
-  display: flex;
-  flex-direction: column;
-  gap: 1.25rem;
-}
-
-.login-form .form-group {
-  display: flex;
-  flex-direction: column;
-  gap: 0.5rem;
-}
-
-.login-form label {
-  font-size: 0.8125rem;
-  font-weight: 600;
-  color: var(--text-muted);
-}
-
-.login-form input {
-  height: 44px;
-  padding: 0 1rem;
-  border: 1px solid var(--border-color);
-  border-radius: 6px;
   font-size: 0.9375rem;
-  outline: none;
+  color: var(--text-muted);
+}
+
+.login-selection {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 1.5rem;
+}
+
+.role-card {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  text-align: center;
+  padding: 2rem 1.5rem;
+  border: 2px solid var(--bg-light);
+  border-radius: 10px;
+  cursor: pointer;
+  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
+  background-color: var(--bg-light);
+}
+
+.role-card:hover {
+  border-color: var(--primary-color);
+  background-color: var(--white);
+  transform: translateY(-4px);
+  box-shadow: 0 10px 20px rgba(30, 81, 73, 0.08);
+}
+
+.role-icon {
+  width: 56px;
+  height: 56px;
+  background-color: var(--white);
+  border-radius: 50%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  margin-bottom: 1.25rem;
+  color: var(--primary-color);
+  border: 1px solid var(--border-color);
   transition: all 0.2s;
 }
 
-.login-form input:focus {
-  border-color: var(--primary-color);
-  box-shadow: 0 0 0 3px rgba(30, 81, 73, 0.1);
-}
-
-.btn-login {
-  height: 48px;
-  margin-top: 0.5rem;
-  font-size: 1rem;
+.role-card:hover .role-icon {
   background-color: var(--primary-color);
   color: var(--white);
-  border: none;
-  border-radius: 6px;
-  font-weight: 700;
-  cursor: pointer;
-  transition: background-color 0.2s;
+  border-color: var(--primary-color);
 }
 
-.btn-login:hover {
-  background-color: var(--primary-hover);
+.role-card h3 {
+  font-size: 1.125rem;
+  font-weight: 700;
+  color: var(--text-main);
+  margin-bottom: 0.5rem;
+}
+
+.role-card p {
+  font-size: 0.8125rem;
+  color: var(--text-muted);
+  line-height: 1.4;
 }
 
 .login-footer {
-  margin-top: 2rem;
+  margin-top: 3rem;
   text-align: center;
   font-size: 0.75rem;
   color: var(--text-muted);
 }
+