diff --git a/src/TaxBaik.Web.Client/wwwroot/index.html b/src/TaxBaik.Web.Client/wwwroot/index.html
index cfc5749..8f19682 100644
--- a/src/TaxBaik.Web.Client/wwwroot/index.html
+++ b/src/TaxBaik.Web.Client/wwwroot/index.html
@@ -3,18 +3,69 @@
 <head>
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>TaxBaik Admin</title>
+    <title>백원숙 세무회계 - 관리자</title>
     <base href="/taxbaik/admin/" />
+    <link rel="icon" type="image/svg+xml" href="/taxbaik/favicon.svg" />
+    <link rel="alternate icon" href="/taxbaik/favicon.ico" />
+    <link rel="preconnect" href="https://fonts.googleapis.com" />
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Noto+Sans+KR:wght@400;500;600;700;800&display=swap" rel="stylesheet" />
+    <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet" />
+    <link href="_content/MudBlazor/MudBlazor.min.css" rel="stylesheet" />
+    <link href="css/admin.css" rel="stylesheet" />
+    <script>
+        window.taxbaikAdminBuildVersion = 'unknown';
+        window.taxbaikAdminComponent = 'AdminWasmApp';
+        document.documentElement.classList.toggle(
+            'admin-login-route',
+            window.location.pathname.toLowerCase().endsWith('/admin/login'));
+    </script>
 </head>
 <body>
-    <div id="app"></div>
-
-    <div id="blazor-error-ui">
-        <p>An unhandled exception has occurred. See browser console for details.</p>
-        <a href="" class="reload">Reload</a>
-        <a class="dismiss">🗙</a>
+    <div id="app">
+        <div id="blazor-loading" class="blazor-loading-overlay show">
+            <div class="blazor-loading-spinner smartadmin-boot-card">
+                <div class="spinner"></div>
+                <strong>TaxBaik Admin</strong>
+                <p>관리 콘솔을 준비 중입니다.</p>
+            </div>
+        </div>
     </div>
 
+    <div id="components-reconnect-modal" class="admin-reconnect-modal">
+        <div class="admin-reconnect-card">
+            <strong>연결 재설정 중...</strong>
+            <span>새로운 버전으로 업데이트되었습니다.</span>
+            <span style="font-size: 0.85rem; margin-top: 0.5rem; opacity: 0.8;">자동으로 페이지를 새로고침합니다. 잠시만 기다려주세요.</span>
+        </div>
+    </div>
+
+    <div id="blazor-error-ui">
+        <p>관리자 화면을 불러오는 중 오류가 발생했습니다. 브라우저 콘솔 또는 서버 client-logs를 확인하세요.</p>
+        <a href="" class="reload">새로고침</a>
+        <a class="dismiss">닫기</a>
+    </div>
+
+    <script src="_content/MudBlazor/MudBlazor.min.js"></script>
+    <script src="js/admin-session.js"></script>
     <script src="_framework/blazor.webassembly.js"></script>
+    <script>
+        function initSession() {
+            if (window.taxbaikAdminSession) {
+                if (typeof window.taxbaikAdminSession.initErrorLogging === 'function') {
+                    window.taxbaikAdminSession.initErrorLogging();
+                }
+                if (typeof window.taxbaikAdminSession.bindLoginForm === 'function') {
+                    window.taxbaikAdminSession.bindLoginForm();
+                }
+                if (typeof window.taxbaikAdminSession.watchReconnect === 'function') {
+                    window.taxbaikAdminSession.watchReconnect();
+                }
+            } else {
+                setTimeout(initSession, 50);
+            }
+        }
+        initSession();
+    </script>
 </body>
-</html>
+</html>
\ No newline at end of file
diff --git a/src/TaxBaik.Web/Program.cs b/src/TaxBaik.Web/Program.cs
index 38396bf..c26b9cb 100644
--- a/src/TaxBaik.Web/Program.cs
+++ b/src/TaxBaik.Web/Program.cs
@@ -394,7 +394,6 @@ app.MapStaticAssets();
 
 // SPA 라우팅 폴백 (가장 마지막에!)
 app.MapFallbackToFile("admin/{*path:nonfile}", "admin/index.html");
-app.MapFallbackToFile("portal/{*path:nonfile}", "portal/index.html");
 
 // 애플리케이션 시작/종료 로깅
 try
