diff --git a/frontend/src/app/router.js b/frontend/src/app/router.js
index 8a76cb1..cdfd51a 100644
--- a/frontend/src/app/router.js
+++ b/frontend/src/app/router.js
@@ -38,40 +38,35 @@ const router = createRouter({
 })
 
 // 路由守卫：拦截未登录用户的访问
-router.beforeEach(async (to, from, next) => {
+router.beforeEach(async (to) => {
   const authUserStore = useAuthUserStore()
 
   // 1. 检查内存中是否有用户信息 (乐观检查)
   let isAuthenticated = !!(authUserStore.userInfo && authUserStore.userInfo.id)
 
   // 2. 如果内存无状态，但目标页需要登录 OR 是仅游客页面(如登录页)，尝试通过 Cookie 恢复会话
-  // (Option 1B: 即使访问登录页，也先确认是否已登录，防止误判)
   if (!isAuthenticated && (to.meta.requiresAuth || to.meta.guestOnly)) {
     try {
       await authUserStore.fetchUserInfo()
       isAuthenticated = !!(authUserStore.userInfo && authUserStore.userInfo.id)
     } catch (e) {
-      // Handle the case where the application environment is unstable/not healthy
       if (e.isSecurity || e.message === 'Security Check Failed') {
-        next('/health')
-        return
+        return '/health'
       }
     }
   }
 
   // 3. 处理需要登录的页面
   if (to.meta.requiresAuth && !isAuthenticated) {
-    next('/login')
-    return
+    return '/login'
   }
 
-  // 4. 处理仅限游客的页面 (Option 2B: 已登录用户访问登录页则跳转首页)
+  // 4. 处理仅限游客的页面
   if (to.meta.guestOnly && isAuthenticated) {
-    next('/')
-    return
+    return '/'
   }
 
-  next()
+  return true
 })
 
 export default router
\ No newline at end of file
diff --git a/frontend/src/app/styles/modules/components/migration.css b/frontend/src/app/styles/modules/components/migration.css
index e7bd8b7..dd1c1d7 100644
--- a/frontend/src/app/styles/modules/components/migration.css
+++ b/frontend/src/app/styles/modules/components/migration.css
@@ -148,7 +148,7 @@
     display: flex;
     flex-direction: column;
     gap: 16px;
-    padding: 20px 20px 0;
+    padding: 20px;
     background-color: none;
     border: 1px solid var(--el-border-color-lighter);
     border-radius: 12px;
@@ -210,14 +210,14 @@
     background-color: transparent;
 }
 
-.ecosystem-collapse :deep(.el-collapse),
-.ecosystem-collapse :deep(.el-collapse-item),
-.ecosystem-collapse :deep(.el-collapse-item__header),
-.ecosystem-collapse :deep(.el-collapse-item__wrap) {
+.ecosystem-collapse,
+.ecosystem-collapse .el-collapse-item,
+.ecosystem-collapse .el-collapse-item__header,
+.ecosystem-collapse .el-collapse-item__wrap {
     border: none !important;
 }
 
-.ecosystem-collapse :deep(.el-collapse-item__header) {
+.ecosystem-collapse .el-collapse-item__header {
     background-color: transparent;
     padding: 0;
     font-size: 13px;
@@ -226,11 +226,11 @@
     line-height: 32px;
 }
 
-.ecosystem-collapse :deep(.el-collapse-item__wrap) {
+.ecosystem-collapse .el-collapse-item__wrap {
     background-color: transparent;
 }
 
-.ecosystem-collapse :deep(.el-collapse-item__content) {
+.ecosystem-collapse .el-collapse-item__content {
     padding: 0;
 }
 
@@ -321,6 +321,6 @@ html.dark .ecosystem-item:hover {
     padding: 10px;
 }
 
-.migration-tabs :deep(.el-tabs__nav-wrap::after) {
+.migration-tabs .el-tabs__nav-wrap::after {
     height: 1px;
 }
\ No newline at end of file
diff --git a/frontend/src/app/styles/modules/components/shared.css b/frontend/src/app/styles/modules/components/shared.css
index cfb9fe8..2fa9d13 100644
--- a/frontend/src/app/styles/modules/components/shared.css
+++ b/frontend/src/app/styles/modules/components/shared.css
@@ -99,11 +99,6 @@
     transform: translateY(-50%);
 }
 
-html.dark .global-offline-banner {
-    background-color: rgba(230, 162, 60, 0.1);
-    border-bottom-color: rgba(230, 162, 60, 0.2);
-}
-
 /* 3. QrScanner Component */
 .qr-scanner-container {
     width: 100%;
diff --git a/frontend/src/app/styles/modules/components/vault.css b/frontend/src/app/styles/modules/components/vault.css
index 55b51d6..c5873a0 100644
--- a/frontend/src/app/styles/modules/components/vault.css
+++ b/frontend/src/app/styles/modules/components/vault.css
@@ -262,7 +262,7 @@
 
 /* AddVaultManual.vue */
 .vault-manual-form-wrapper {
-    padding: 10px 0;
+    padding: 0;
 }
 
 .vault-manual-submit-btn {
diff --git a/frontend/src/features/auth/views/securitySettings.vue b/frontend/src/features/auth/views/securitySettings.vue
index fa9a8b0..3dac81a 100644
--- a/frontend/src/features/auth/views/securitySettings.vue
+++ b/frontend/src/features/auth/views/securitySettings.vue
@@ -242,7 +242,14 @@ const handleDelete = async (row) => {
 
 const formatDate = (timestamp) => {
   if (!timestamp) return '-'
-  return new Date(timestamp).toLocaleString()
+  const date = new Date(timestamp)
+  const Y = date.getFullYear()
+  const M = String(date.getMonth() + 1).padStart(2, '0')
+  const D = String(date.getDate()).padStart(2, '0')
+  const h = String(date.getHours()).padStart(2, '0')
+  const m = String(date.getMinutes()).padStart(2, '0')
+  const s = String(date.getSeconds()).padStart(2, '0')
+  return `${Y}-${M}-${D} ${h}:${m}:${s}`
 }
 
 onMounted(() => {
diff --git a/frontend/src/features/backup/components/backupSettings.vue b/frontend/src/features/backup/components/backupSettings.vue
index 41920ab..99ccb67 100644
--- a/frontend/src/features/backup/components/backupSettings.vue
+++ b/frontend/src/features/backup/components/backupSettings.vue
@@ -39,7 +39,7 @@
           <div class="card-content">
             <p class="backup-status-text">
               {{ $t('backup.last_backup') }} 
-              <span v-if="provider.lastBackupAt">{{ new Date(provider.lastBackupAt).toLocaleString() }}</span>
+              <span v-if="provider.lastBackupAt">{{ formatDate(provider.lastBackupAt) }}</span>
               <span v-else>{{ $t('backup.never_backed_up') }}</span>
               <el-tag v-if="provider.lastBackupStatus" size="small" :type="provider.lastBackupStatus === 'success' ? 'success' : 'danger'" class="ml-5">
                 {{ provider.lastBackupStatus }}
@@ -513,7 +513,11 @@
             {{ formatSize(scope.row.size) }}
           </template>
         </el-table-column>
-        <el-table-column prop="lastModified" :label="$t('backup.time')" width="180" />
+        <el-table-column :label="$t('backup.time')" width="180">
+          <template #default="scope">
+            {{ formatDate(scope.row.lastModified) }}
+          </template>
+        </el-table-column>
         <el-table-column :label="$t('backup.action')" width="100">
           <template #default="scope">
             <el-button link type="primary" @click="selectRestoreFile(scope.row)">{{ $t('backup.restore') }}</el-button>
@@ -597,14 +601,14 @@ const handleSmtpSecureChange = (val) => {
 
 const getProviderTypeTag = (type) => {
   const map = {
-    webdav: 'primary',
+    webdav: 'danger',
     s3: 'warning',
-    telegram: 'success',
-    gdrive: 'danger',
-    onedrive: 'success',
-    baidu: 'warning',
+    telegram: 'primary',
+    gdrive: 'success',
+    onedrive: 'primary',
+    baidu: 'primary',
     dropbox: 'primary',
-    email: 'info'
+    email: 'success'
   }
   return map[type] || 'info'
 }
@@ -616,4 +620,16 @@ const formatSize = (bytes) => {
   const i = Math.floor(Math.log(bytes) / Math.log(k))
   return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i]
 }
+
+const formatDate = (dateStr) => {
+  if (!dateStr) return '-'
+  const date = new Date(dateStr)
+  const Y = date.getFullYear()
+  const M = String(date.getMonth() + 1).padStart(2, '0')
+  const D = String(date.getDate()).padStart(2, '0')
+  const h = String(date.getHours()).padStart(2, '0')
+  const m = String(date.getMinutes()).padStart(2, '0')
+  const s = String(date.getSeconds()).padStart(2, '0')
+  return `${Y}-${M}-${D} ${h}:${m}:${s}`
+}
 </script>
\ No newline at end of file
diff --git a/frontend/src/features/migration/views/dataImport.vue b/frontend/src/features/migration/views/dataImport.vue
index cae5af2..99b98de 100644
--- a/frontend/src/features/migration/views/dataImport.vue
+++ b/frontend/src/features/migration/views/dataImport.vue
@@ -64,9 +64,9 @@
               <el-collapse class="ecosystem-collapse">
                 <el-collapse-item name="1">
                   <template #title>
-                    <h4 class="group-title">
-                      <el-icon class="mr-8"><QuestionFilled /></el-icon> <strong>{{ $t('migration.ga_ms_import_guide') }}</strong>
-                    </h4>
+                    <div class="migration-guide">
+                      <strong>{{ $t('migration.ga_ms_import_guide') }}</strong>
+                    </div>
                   </template>
                   <div class="migration-ga-tip">
                     <span><el-icon><iconGoogleAuth /></el-icon> Google Authenticator</span>
diff --git a/frontend/src/features/vault/components/appSidebar.vue b/frontend/src/features/vault/components/appSidebar.vue
index 4a7af27..0f03352 100644
--- a/frontend/src/features/vault/components/appSidebar.vue
+++ b/frontend/src/features/vault/components/appSidebar.vue
@@ -49,7 +49,7 @@
     <div class="sidebar-footer" :class="{ 'is-collapsed': isCollapse }">
       <el-button circle :icon="isCollapse ? Expand : Fold" @click="toggleCollapse" :title="isCollapse ? '展开' : '折叠'" />
       <el-button circle :icon="themeStore.isDark ? Sunny : Moon" @click="themeStore.toggleTheme" />
-      <el-button circle size="medium" :icon="iconLocales" :title="$i18n.locale === 'zh-CN' ? 'English' : '切换语言'" @click="toggleLanguage" />
+      <el-button circle size="default" :icon="iconLocales" :title="$i18n.locale === 'zh-CN' ? 'English' : '切换语言'" @click="toggleLanguage" />
       <el-button circle @click="handleLogout" :title="$t('menu.logout')">
         <el-icon><SwitchButton /></el-icon>
       </el-button>
@@ -128,9 +128,9 @@
       </el-menu>
 
       <div class="sidebar-footer" style="display: flex; gap: 15px; justify-content: center; padding: 20px 0;">
-        <el-button circle size="medium" :icon="themeStore.isDark ? Sunny : Moon" @click="themeStore.toggleTheme" />
-        <el-button circle size="medium" :icon="iconLocales" :title="$i18n.locale === 'zh-CN' ? 'English' : '切换语言'" @click="toggleLanguage" />
-        <el-button circle size="medium" @click="handleLogout" :title="$t('menu.logout')">
+        <el-button circle size="default" :icon="themeStore.isDark ? Sunny : Moon" @click="themeStore.toggleTheme" />
+        <el-button circle size="default" :icon="iconLocales" :title="$i18n.locale === 'zh-CN' ? 'English' : '切换语言'" @click="toggleLanguage" />
+        <el-button circle size="default" @click="handleLogout" :title="$t('menu.logout')">
           <el-icon><SwitchButton /></el-icon>
         </el-button>
       </div>
@@ -170,7 +170,7 @@ const themeStore = useThemeStore()
 const authUserStore = useAuthUserStore()
 const router = useRouter()
 
-const isCollapse = ref(localStorage.getItem('sidebar_collapse') === 'true')
+const isCollapse = ref(localStorage.getItem('sidebar_collapse') !== 'false')
 
 const toggleCollapse = () => {
   isCollapse.value = !isCollapse.value
diff --git a/frontend/src/locales/en-US.json b/frontend/src/locales/en-US.json
index 62bd68c..6476f0d 100644
--- a/frontend/src/locales/en-US.json
+++ b/frontend/src/locales/en-US.json
@@ -41,7 +41,7 @@
         "backup": "Cloud Backup",
         "migration": "Migration",
         "tools": "Toolbox",
-        "security": "PassKey",
+        "security": "Passkey",
         "settings": "Settings",
         "logout": "Sign Out"
     },
@@ -733,7 +733,7 @@
         "connection_failed": "Cannot connect to server for health check"
     },
     "security": {
-        "management": "Passkey Management",
+        "management": "Passkey List",
         "passkey_title": "Passkey Management",
         "passkey_desc": "Enable passwordless login using biometrics such as fingerprint or face recognition for a more secure and convenient access experience.",
         "passkey_list": "Registered Passkeys",
diff --git a/frontend/src/locales/zh-CN.json b/frontend/src/locales/zh-CN.json
index 2be8249..3dfe2f2 100644
--- a/frontend/src/locales/zh-CN.json
+++ b/frontend/src/locales/zh-CN.json
@@ -734,7 +734,7 @@
     },
     "security": {
         "management": "通行密钥管理",
-        "passkey_title": "通行密钥管理",
+        "passkey_title": "通行密钥",
         "passkey_desc": "通过生物识别（如指纹或面容）实现无密码登录，为您提供更安全、更快速的账户访问体验。",
         "passkey_list": "已绑定的通行密钥",
         "add_passkey": "添加通行密钥",
diff --git a/frontend/vite.config.js b/frontend/vite.config.js
index 69ae15c..d409248 100644
--- a/frontend/vite.config.js
+++ b/frontend/vite.config.js
@@ -92,7 +92,14 @@ export default defineConfig({
         clientsClaim: true,
         skipWaiting: true,
         navigateFallback: '/index.html',
-        navigateFallbackDenylist: [/^\/api/],
+        // 排除 API 和 Vite 开发环境下的内部路径，防止 Service Worker 拦截干扰
+        navigateFallbackDenylist: [
+          /^\/api/,
+          /\/@vite\//,
+          /\/@fs\//,
+          /\/@id\//,
+          /node_modules/
+        ],
         runtimeCaching: [
           {
             urlPattern: ({ url }) => url.pathname.startsWith('/api'),