diff --git a/public/images/auth/download.png b/public/images/auth/download.png
index f0761a0..2ed48d2 100644
Binary files a/public/images/auth/download.png and b/public/images/auth/download.png differ
diff --git a/public/images/auth/file.png b/public/images/auth/file.png
index e2d94ae..d1b200c 100644
Binary files a/public/images/auth/file.png and b/public/images/auth/file.png differ
diff --git a/public/images/auth/revise.png b/public/images/auth/revise.png
new file mode 100644
index 0000000..e6a4143
Binary files /dev/null and b/public/images/auth/revise.png differ
diff --git a/public/images/profile/del.png b/public/images/profile/del.png
index 7eee424..6bc8c41 100644
Binary files a/public/images/profile/del.png and b/public/images/profile/del.png differ
diff --git a/public/images/profile/edit.png b/public/images/profile/edit.png
index 9250d53..e6a4143 100644
Binary files a/public/images/profile/edit.png and b/public/images/profile/edit.png differ
diff --git a/public/images/profile/search.png b/public/images/profile/search.png
index eb5deec..48ee0f0 100644
Binary files a/public/images/profile/search.png and b/public/images/profile/search.png differ
diff --git a/public/logo/logo2.png b/public/logo/logo2.png
index 5d466e8..8652ce8 100644
Binary files a/public/logo/logo2.png and b/public/logo/logo2.png differ
diff --git a/public/logo/logo3.png b/public/logo/logo3.png
index 54bb4b5..6992cd6 100644
Binary files a/public/logo/logo3.png and b/public/logo/logo3.png differ
diff --git a/public/nav-icons/切换_switch备份 2.png b/public/nav-icons/切换_switch备份 2.png
new file mode 100644
index 0000000..a41bc99
Binary files /dev/null and b/public/nav-icons/切换_switch备份 2.png differ
diff --git a/public/nav-icons/切换_switch备份.png b/public/nav-icons/切换_switch备份.png
new file mode 100644
index 0000000..50aa00e
Binary files /dev/null and b/public/nav-icons/切换_switch备份.png differ
diff --git a/public/nav-icons/学习中心-选中.png b/public/nav-icons/学习中心-选中.png
new file mode 100644
index 0000000..1738b2b
Binary files /dev/null and b/public/nav-icons/学习中心-选中.png differ
diff --git a/public/nav-icons/学习中心.png b/public/nav-icons/学习中心.png
index f85d915..e1728fb 100644
Binary files a/public/nav-icons/学习中心.png and b/public/nav-icons/学习中心.png differ
diff --git a/public/nav-icons/提醒,感叹号_jurassic.png备份.png b/public/nav-icons/提醒,感叹号_jurassic.png备份.png
new file mode 100644
index 0000000..e9fb206
Binary files /dev/null and b/public/nav-icons/提醒,感叹号_jurassic.png备份.png differ
diff --git a/public/nav-icons/用户_user备份 2.png b/public/nav-icons/用户_user备份 2.png
new file mode 100644
index 0000000..5cffd5b
Binary files /dev/null and b/public/nav-icons/用户_user备份 2.png differ
diff --git a/public/nav-icons/用户_user备份.png b/public/nav-icons/用户_user备份.png
new file mode 100644
index 0000000..b8a4ac3
Binary files /dev/null and b/public/nav-icons/用户_user备份.png differ
diff --git a/public/nav-icons/矩形-选中.png b/public/nav-icons/矩形-选中.png
new file mode 100644
index 0000000..0386dc0
Binary files /dev/null and b/public/nav-icons/矩形-选中.png differ
diff --git a/public/nav-icons/矩形.png b/public/nav-icons/矩形.png
index bae11f6..184352d 100644
Binary files a/public/nav-icons/矩形.png and b/public/nav-icons/矩形.png differ
diff --git a/public/nav-icons/管理端-选中.png b/public/nav-icons/管理端-选中.png
new file mode 100644
index 0000000..6b4299e
Binary files /dev/null and b/public/nav-icons/管理端-选中.png differ
diff --git a/public/nav-icons/管理端.png b/public/nav-icons/管理端.png
index 7122414..eccfdfc 100644
Binary files a/public/nav-icons/管理端.png and b/public/nav-icons/管理端.png differ
diff --git a/public/nav-icons/路径备份 2.png b/public/nav-icons/路径备份 2.png
new file mode 100644
index 0000000..76cd169
Binary files /dev/null and b/public/nav-icons/路径备份 2.png differ
diff --git a/public/nav-icons/退出_logout备份 2.png b/public/nav-icons/退出_logout备份 2.png
new file mode 100644
index 0000000..9cb02c1
Binary files /dev/null and b/public/nav-icons/退出_logout备份 2.png differ
diff --git a/public/nav-icons/退出_logout备份 3.png b/public/nav-icons/退出_logout备份 3.png
new file mode 100644
index 0000000..babd81f
Binary files /dev/null and b/public/nav-icons/退出_logout备份 3.png differ
diff --git a/src/components/FirstProject.vue b/src/components/FirstProject.vue
index e7e6e33..e5dca18 100644
--- a/src/components/FirstProject.vue
+++ b/src/components/FirstProject.vue
@@ -19,6 +19,6 @@
 </template>
 <script setup lang="ts">
 function open() {
-  window.location.href = 'http://110.42.96.65:55613/demo/'
+  window.location.href = 'http://103.40.14.23:25538/demo/'
 }
 </script> 
\ No newline at end of file
diff --git a/src/components/FourthProject.vue b/src/components/FourthProject.vue
index 67af5c4..9c3c603 100644
--- a/src/components/FourthProject.vue
+++ b/src/components/FourthProject.vue
@@ -19,6 +19,6 @@
 </template>
 <script setup lang="ts">
 function open() {
-  window.location.href = 'http://110.42.96.65:55611/'
+  window.location.href = 'http://103.40.14.23:25539/'
 }
 </script> 
\ No newline at end of file
diff --git a/src/components/SecondProject.vue b/src/components/SecondProject.vue
index 1e9622c..4c3f807 100644
--- a/src/components/SecondProject.vue
+++ b/src/components/SecondProject.vue
@@ -22,6 +22,6 @@
 </template>
 <script setup lang="ts">
 function open() {
-  window.location.href = 'http://110.42.96.65:55612/'
+  window.location.href = 'http://103.40.14.23:25537/'
 }
 </script> 
\ No newline at end of file
diff --git a/src/components/ThirdProject.vue b/src/components/ThirdProject.vue
index 1087bfe..6232b81 100644
--- a/src/components/ThirdProject.vue
+++ b/src/components/ThirdProject.vue
@@ -22,6 +22,6 @@
 </template>
 <script setup lang="ts">
 function open() {
-  window.location.href = 'http://110.42.96.65:55610/'
+  window.location.href = 'http://103.40.14.23:25540/llm'
 }
 </script> 
\ No newline at end of file
diff --git a/src/components/layout/AppHeader.vue b/src/components/layout/AppHeader.vue
index bb1b91d..aec8657 100644
--- a/src/components/layout/AppHeader.vue
+++ b/src/components/layout/AppHeader.vue
@@ -64,7 +64,8 @@
     <div class="header-actions">
       <!-- 切换语言 -->
       <div class="action-item language-switcher" @click="toggleLanguageDropdown" ref="languageSwitcherRef">
-        <img src="/nav-icons/矩形.png" alt="" class="action-icon" />
+        <img src="/nav-icons/矩形.png" alt="" class="action-icon default-icon" />
+        <img src="/nav-icons/矩形-选中.png" alt="" class="action-icon hover-icon" />
         <span>{{ t('header.languageSwitch') }}</span>
         <div v-if="showLanguageDropdown" class="language-dropdown">
           <div class="language-option" @click.stop="switchLanguage('zh')">
@@ -78,13 +79,15 @@
 
       <!-- 学习中心 -->
       <div class="action-item" @click="handleLearningCenter">
-        <img src="/nav-icons/学习中心.png" alt="" class="action-icon" />
+        <img src="/nav-icons/学习中心.png" alt="" class="action-icon default-icon" />
+        <img src="/nav-icons/学习中心-选中.png" alt="" class="action-icon hover-icon" />
         <span>{{ t('header.learningCenter') }}</span>
       </div>
 
       <!-- 管理端 -->
       <div class="action-item">
-        <img src="/nav-icons/管理端.png" alt="" class="action-icon" />
+        <img src="/nav-icons/管理端.png" alt="" class="action-icon default-icon" />
+        <img src="/nav-icons/管理端-选中.png" alt="" class="action-icon hover-icon" />
         <span>{{ t('header.management') }}</span>
       </div>
 
@@ -101,8 +104,11 @@
       <div v-else class="user-menu">
         <n-dropdown :options="userMenuOptions" @select="handleUserMenuSelect">
           <div class="user-info">
-            <SafeAvatar :src="userStore.user?.avatar" :name="userStore.user?.profile?.realName || userStore.user?.nickname || userStore.user?.username" :size="32" />
-            <span class="username">{{ userStore.user?.profile?.realName || userStore.user?.nickname || userStore.user?.username }}</span>
+            <SafeAvatar :src="userStore.user?.avatar"
+              :name="userStore.user?.profile?.realName || userStore.user?.nickname || userStore.user?.username"
+              :size="32" />
+            <span class="username">{{ userStore.user?.profile?.realName || userStore.user?.nickname ||
+              userStore.user?.username }}</span>
           </div>
         </n-dropdown>
       </div>
@@ -331,58 +337,71 @@ onUnmounted(() => {
   height: 64px;
   background: white;
   position: fixed;
-    top: 0;
-    left: 0;
-    right: 0;
-    z-index: 1001;
-  }
-  
-  /* Logo区域 */
-  .logo-section {
-    flex-shrink: 0;
-    margin-right: 40px;
-  }
-  
-  .logo {
-    display: flex;
-    align-items: center;
-    cursor: pointer;
-    gap: 8px;
-  }
-  
-  .logo:hover {
-    opacity: 0.8;
-  }
-  
-  .logo-image {
-    width: 72px;
-    height: 61px;
-    object-fit: contain;
-  }
-  
-  .nav-icon {
-    max-width: 12px;
-    max-height: 12px;
-    width: auto;
-    height: auto;
-    margin-right: 4px;
-    object-fit: contain;
-  }
-  
-  /* AI图标样式 */
-  .ai-icon {
-    max-width: 34px;
-    max-height: 34px;
-    margin-right: 0;
-  }
-  
-  .action-icon {
-    max-width: 18px;
-    max-height: 18px;
-    width: auto;
-    height: auto;
-    object-fit: contain;
-  }
+  top: 0;
+  left: 0;
+  right: 0;
+  z-index: 1001;
+}
+
+/* Logo区域 */
+.logo-section {
+  flex-shrink: 0;
+  margin-right: 40px;
+}
+
+.logo {
+  display: flex;
+  align-items: center;
+  cursor: pointer;
+  gap: 8px;
+}
+
+.logo:hover {
+  opacity: 0.8;
+}
+
+.logo-image {
+  width: 72px;
+  height: 61px;
+  object-fit: contain;
+}
+
+.nav-icon {
+  max-width: 12px;
+  max-height: 12px;
+  width: auto;
+  height: auto;
+  margin-right: 4px;
+  object-fit: contain;
+}
+
+/* AI图标样式 */
+.ai-icon {
+  max-width: 34px;
+  max-height: 34px;
+  margin-right: 0;
+}
+
+.action-icon {
+  max-width: 18px;
+  max-height: 18px;
+  width: auto;
+  height: auto;
+  object-fit: contain;
+}
+
+/* 图标悬停效果 */
+.action-item .hover-icon {
+  display: none;
+}
+
+.action-item:hover .default-icon {
+  display: none;
+}
+
+.action-item:hover .hover-icon {
+  display: block;
+}
   
   
   
diff --git a/src/views/Profile.vue b/src/views/Profile.vue
index 0b2f2cc..20a39c5 100644
--- a/src/views/Profile.vue
+++ b/src/views/Profile.vue
@@ -12,9 +12,11 @@
       <!-- 左侧侧边栏 -->
       <div class="block_14">
         <!-- 用户头像和姓名 -->
-        <SafeAvatar class="image_7" :src="userStore.user?.avatar" :name="userStore.user?.profile?.realName || userStore.user?.nickname || userStore.user?.username || '用户'" :size="96"
-          alt="用户头像" />
-        <span class="text_72">{{ userStore.user?.profile?.realName || userStore.user?.nickname || userStore.user?.username || '用户名' }}</span>
+        <SafeAvatar class="image_7" :src="userStore.user?.avatar"
+          :name="userStore.user?.profile?.realName || userStore.user?.nickname || userStore.user?.username || '用户'"
+          :size="96" alt="用户头像" />
+        <span class="text_72">{{ userStore.user?.profile?.realName || userStore.user?.nickname ||
+          userStore.user?.username || '用户名' }}</span>
 
         <!-- 菜单项容器 -->
         <div class="box_22">
@@ -23,73 +25,66 @@
 
           <!-- 我的课程 -->
           <div :class="['image-text_19', { active: activeTab === 'courses' }]" @click="handleMenuSelect('courses')">
-            <img class="image_8" referrerpolicy="no-referrer" :src="activeTab === 'courses'
-              ? '/images/profile/course-active.png'
-              : '/images/profile/course.png'" />
+            <img class="image_8 default-icon" referrerpolicy="no-referrer" src="/images/profile/course.png" />
+            <img class="image_8 hover-icon" referrerpolicy="no-referrer" src="/images/profile/course-active.png" />
             <span class="text-group_19">我的课程</span>
           </div>
 
           <!-- 我的作业 -->
           <div :class="['image-text_20', { active: activeTab === 'homework' }]" @click="handleMenuSelect('homework')">
-            <img class="label_4" referrerpolicy="no-referrer" :src="activeTab === 'homework'
-              ? '/images/profile/grade-active.png'
-              : '/images/profile/grade.png'" />
+            <img class="label_4 default-icon" referrerpolicy="no-referrer" src="/images/profile/grade.png" />
+            <img class="label_4 hover-icon" referrerpolicy="no-referrer" src="/images/profile/grade-active.png" />
             <span class="text-group_20">我的作业</span>
           </div>
 
           <!-- 我的考试 -->
           <div :class="['image-text_21', { active: activeTab === 'exam' }]" @click="handleMenuSelect('exam')">
-            <img class="label_5" referrerpolicy="no-referrer" :src="activeTab === 'exam'
-              ? '/images/profile/checklist-active.png'
-              : '/images/profile/checklist.png'" />
+            <img class="label_5 default-icon" referrerpolicy="no-referrer" src="/images/profile/checklist.png" />
+            <img class="label_5 hover-icon" referrerpolicy="no-referrer" src="/images/profile/checklist-active.png" />
             <span class="text-group_21">我的考试</span>
           </div>
 
           <!-- 我的练习 -->
           <div :class="['image-text_22', { active: activeTab === 'practice' }]" @click="handleMenuSelect('practice')">
-            <img class="label_6" referrerpolicy="no-referrer" :src="activeTab === 'practice'
-              ? '/images/profile/bookmark-active.png'
-              : '/images/profile/bookmark.png'" />
+            <img class="label_6 default-icon" referrerpolicy="no-referrer" src="/images/profile/bookmark.png" />
+            <img class="label_6 hover-icon" referrerpolicy="no-referrer" src="/images/profile/bookmark-active.png" />
             <span class="text-group_22">我的练习</span>
           </div>
 
           <!-- 我的活动 -->
           <div :class="['image-text_23', { active: activeTab === 'activity' }]" @click="handleMenuSelect('activity')">
-            <img class="thumbnail_40" referrerpolicy="no-referrer" :src="activeTab === 'activity'
-              ? '/images/profile/gift-active.png'
-              : '/images/profile/gift.png'" />
+            <img class="thumbnail_40 default-icon" referrerpolicy="no-referrer" src="/images/profile/gift.png" />
+            <img class="thumbnail_40 hover-icon" referrerpolicy="no-referrer" src="/images/profile/gift-active.png" />
             <span class="text-group_23">我的活动</span>
           </div>
 
           <!-- 我的关注 -->
           <div :class="['image-text_27', { active: activeTab === 'follows' }]" @click="handleMenuSelect('follows')">
-            <img class="thumbnail_42" referrerpolicy="no-referrer" :src="activeTab === 'follows'
-              ? '/images/profile/concern-active.png'
-              : '/images/profile/concern.png'" />
+            <img class="thumbnail_42 default-icon" referrerpolicy="no-referrer" src="/images/profile/concern.png" />
+            <img class="thumbnail_42 hover-icon" referrerpolicy="no-referrer"
+              src="/images/profile/concern-active.png" />
             <span class="text-group_27">我的关注</span>
           </div>
 
           <!-- 我的消息 -->
           <div :class="['image-text_24', { active: activeTab === 'message' }]" @click="handleMenuSelect('message')">
-            <img class="label_7" referrerpolicy="no-referrer" :src="activeTab === 'message'
-              ? '/images/profile/message-active.png'
-              : '/images/profile/message.png'" />
+            <img class="label_7 default-icon" referrerpolicy="no-referrer" src="/images/profile/message.png" />
+            <img class="label_7 hover-icon" referrerpolicy="no-referrer" src="/images/profile/message-active.png" />
             <span class="text-group_24">我的消息</span>
           </div>
 
           <!-- 我的资料 -->
           <div :class="['image-text_25', { active: activeTab === 'materials' }]" @click="handleMenuSelect('materials')">
-            <img class="image_9" referrerpolicy="no-referrer" :src="activeTab === 'materials'
-              ? '/images/profile/profile-active.png'
-              : '/images/profile/profile.png'" />
+            <img class="image_9 default-icon" referrerpolicy="no-referrer" src="/images/profile/profile.png" />
+            <img class="image_9 hover-icon" referrerpolicy="no-referrer" src="/images/profile/profile-active.png" />
             <span class="text-group_25">我的资料</span>
           </div>
 
           <!-- 我的下载 -->
           <div :class="['image-text_26', { active: activeTab === 'download' }]" @click="handleMenuSelect('download')">
-            <img class="thumbnail_41" referrerpolicy="no-referrer" :src="activeTab === 'download'
-              ? '/images/profile/download-active.png'
-              : '/images/profile/download.png'" />
+            <img class="thumbnail_41 default-icon" referrerpolicy="no-referrer" src="/images/profile/download.png" />
+            <img class="thumbnail_41 hover-icon" referrerpolicy="no-referrer"
+              src="/images/profile/download-active.png" />
             <span class="text-group_26">我的下载</span>
           </div>
         </div>
@@ -187,7 +182,7 @@
         <!-- 作业内容 -->
         <div v-else-if="isHomeworkTab" class="homework-content">
           <!-- 作业筛选标签 -->
-          <div class="text-wrapper_1 flex-row">
+          <div v-if="!showDraftBoxView" class="text-wrapper_1 flex-row">
             <span class="text_12" :class="{ active: activeHomeworkTab === 'all' }"
               @click="handleHomeworkTabChange('all')">全部作业</span>
             <span class="text_13" :class="{ active: activeHomeworkTab === 'pending' }"
@@ -200,7 +195,7 @@
             </span>
           </div>
           <!-- 分割线 -->
-          <div class="course-divider"></div>
+          <div v-if="!showDraftBoxView" class="course-divider"></div>
 
           <!-- 面包屑 -->
           <!-- <div class="breadcrumb-wrapper flex-row">
@@ -211,13 +206,13 @@
 
           <!-- 作业详情视图 -->
           <div v-if="showDetailView && detailAssignment">
-            <div class="detail-header">
+            <!-- <div class="detail-header">
               <div class="breadcrumb-nav">
                 <span class="breadcrumb-item" @click="backToAssignmentList">全部作业</span>
                 <span class="breadcrumb-separator">></span>
                 <span class="breadcrumb-current">作业名称</span>
               </div>
-            </div>
+            </div> -->
 
             <div class="group_11">
               <!-- 头部信息 -->
@@ -238,13 +233,14 @@
                     fontSize: '14px'
                   }">
                     {{ detailAssignment.status === '未完成' || detailAssignment.status === '待提交' ? '未完成' :
-  (detailAssignment.status === '已完成' ? '已完成' : '541人已完成') }}
+                      (detailAssignment.status === '已完成' ? '已完成' : '541人已完成') }}
                   </span>
                 </span>
               </div>
 
               <!-- 作业内容 -->
               <div class="text-group_4">
+                <div class="course-divider"></div>
                 <span class="text_33">{{ detailAssignment.title }}</span>
                 <div class="description-container">
                   <span class="text_34 description-full-view">
@@ -854,12 +850,10 @@
               <div class="avatar-section">
                 <div class="avatar-container">
                   <SafeAvatar :src="userStore.user?.avatar"
-                    :name="userStore.user?.profile?.realName || userStore.user?.nickname || userStore.user?.username || '用户'" :size="68" alt="用户头像"
-                    class="user-avatar-large" />
+                    :name="userStore.user?.profile?.realName || userStore.user?.nickname || userStore.user?.username || '用户'"
+                    :size="68" alt="用户头像" class="user-avatar-large" />
                   <div class="avatar-edit-btn">
-                    <img
-                      src="https://lanhu-oss-2537-2.lanhuapp.com/SketchPngf31d99a65996c8c8ed0d6b2446b4176a30b16838933c10b800a735d092717c57"
-                      alt="编辑头像" class="edit-icon" />
+                    <img src="/images/auth/revise.png" alt="编辑头像" class="edit-icon" />
                   </div>
                 </div>
               </div>
@@ -957,8 +951,8 @@
           <!-- 面包屑导航或筛选和操作区域 -->
           <div v-if="isInSubDirectory" class="breadcrumb-controls">
             <div class="breadcrumb-nav">
-              <span class="breadcrumb-text" @click="goBack">课件&gt;图片&gt;</span>
-              <span class="breadcrumb-current">风景图片</span>
+              <span class="breadcrumb-text" @click="goBack">{{ currentPath.join(' > ') }} ></span>
+              <span class="breadcrumb-current">{{ currentPath[currentPath.length - 1] || '文件夹' }}</span>
             </div>
           </div>
 
@@ -979,7 +973,7 @@
                   <input v-model="downloadFilter.keyword" type="text" class="search-input" placeholder="请输入文件名称" />
                   <button class="search-btn">
                     <img
-                      src="https://lanhu-oss-2537-2.lanhuapp.com/SketchPng870a86da8af58a60f35fcb27ef4822e645d2ad5aaabe6416e4179342a53a5a60"
+                      src="/images/profile/search.png"
                       alt="搜索图标" class="search-icon" />
                   </button>
                 </div>
@@ -997,7 +991,8 @@
           <div class="files-grid"
             :class="{ 'subdirectory-grid': isInSubDirectory, 'certificate-grid': activeDownloadTab === 'certificate', 'homework-grid': activeDownloadTab === 'homework' }">
             <div v-for="file in filteredDownloadFiles" :key="file.id" class="file-item"
-              :class="{ 'subdirectory-item': isInSubDirectory }" @click="handleFileClick(file)">
+              :class="{ 'subdirectory-item': isInSubDirectory }" @dblclick="handleFolderDoubleClick(file)"
+              @click="handleFileClick(file)">
               <div class="file-menu">
                 <button class="file-menu-btn" @click.stop="toggleFileMenu(file.id)">
                   <img src="/images/profile/more.png" alt="更多操作" class="more-icon" />
@@ -2486,6 +2481,11 @@ const handleDownloadTabChange = (tab: string) => {
 
 // 筛选后的下载文件
 const filteredDownloadFiles = computed(() => {
+  // 如果在子目录中，返回空数组显示空页面
+  if (isInSubDirectory.value) {
+    return []
+  }
+
   let files = downloadFiles.filter(file => file.category === activeDownloadTab.value)
 
   if (downloadFilter.type !== 'all') {
@@ -2507,10 +2507,16 @@ const toggleFileMenu = (fileId: number) => {
 }
 
 const handleFileClick = (file: any) => {
-  if (file.type === 'folder' && file.name === '图片') {
-    // 点击图片文件夹，进入子目录
+  // 单击文件时的处理逻辑（如选中文件等）
+  console.log('单击文件:', file.name)
+}
+
+const handleFolderDoubleClick = (file: any) => {
+  if (file.type === 'folder') {
+    // 双击文件夹，进入子目录（显示空页面）
     isInSubDirectory.value = true
-    currentPath.value = ['课件', '图片']
+    currentPath.value = ['课件', file.name]
+    console.log('进入文件夹:', file.name)
   }
 }
 
@@ -2541,7 +2547,7 @@ const getFileIcon = (fileId?: number) => {
     return 'https://lanhu-oss-2537-2.lanhuapp.com/SketchPngf45333052202c303acc2c06223c26b820d330459ce2d452a21a3132fbbeab442'
   } else {
     // 默认文件夹图标
-    return 'https://lanhu-oss-2537-2.lanhuapp.com/SketchPng5548891b00234027dbe6dadafbd83596d616261421c0587a85652dc194b2d5ef'
+    return '/images/profile/folder.png'
   }
 }
 
@@ -2689,10 +2695,10 @@ const viewAssignmentDetail = (assignment: Assignment) => {
 }
 
 // 返回作业列表
-const backToAssignmentList = () => {
-  showDetailView.value = false
-  detailAssignment.value = null
-}
+// const backToAssignmentList = () => {
+//   showDetailView.value = false
+//   detailAssignment.value = null
+// }
 
 // 从详情页面跳转到上传作业
 const showUploadFromDetail = () => {
@@ -2967,7 +2973,7 @@ onActivated(() => {
   /* 自适应高度 */
   min-height: 3vh;
   /* 设置最小高度，让盒子更大 */
-  margin: 1.5vh;
+  margin: .5vh;
   /* 减小间距：从2.34vh减少到1.5vh */
   display: flex;
   align-items: center;
@@ -3076,6 +3082,68 @@ onActivated(() => {
   /* 悬停时蓝色 */
 }
 
+/* 菜单项图标悬停效果 */
+.image-text_19 .hover-icon,
+.image-text_20 .hover-icon,
+.image-text_21 .hover-icon,
+.image-text_22 .hover-icon,
+.image-text_23 .hover-icon,
+.image-text_24 .hover-icon,
+.image-text_25 .hover-icon,
+.image-text_26 .hover-icon,
+.image-text_27 .hover-icon {
+  display: none;
+}
+
+.image-text_19:hover .default-icon,
+.image-text_20:hover .default-icon,
+.image-text_21:hover .default-icon,
+.image-text_22:hover .default-icon,
+.image-text_23:hover .default-icon,
+.image-text_24:hover .default-icon,
+.image-text_25:hover .default-icon,
+.image-text_26:hover .default-icon,
+.image-text_27:hover .default-icon {
+  display: none;
+}
+
+.image-text_19:hover .hover-icon,
+.image-text_20:hover .hover-icon,
+.image-text_21:hover .hover-icon,
+.image-text_22:hover .hover-icon,
+.image-text_23:hover .hover-icon,
+.image-text_24:hover .hover-icon,
+.image-text_25:hover .hover-icon,
+.image-text_26:hover .hover-icon,
+.image-text_27:hover .hover-icon {
+  display: block;
+}
+
+/* 激活状态的图标显示 */
+.image-text_19.active .default-icon,
+.image-text_20.active .default-icon,
+.image-text_21.active .default-icon,
+.image-text_22.active .default-icon,
+.image-text_23.active .default-icon,
+.image-text_24.active .default-icon,
+.image-text_25.active .default-icon,
+.image-text_26.active .default-icon,
+.image-text_27.active .default-icon {
+  display: none;
+}
+
+.image-text_19.active .hover-icon,
+.image-text_20.active .hover-icon,
+.image-text_21.active .hover-icon,
+.image-text_22.active .hover-icon,
+.image-text_23.active .hover-icon,
+.image-text_24.active .hover-icon,
+.image-text_25.active .hover-icon,
+.image-text_26.active .hover-icon,
+.image-text_27.active .hover-icon {
+  display: block;
+}
+
 /* 右侧课程列表区域 */
 .group_5 {
   width: 65vw;
@@ -4186,9 +4254,8 @@ onActivated(() => {
 }
 
 .course-name {
-  margin-top: 10px;
-  margin-left: 83px;
-  color: #999999;
+  margin-left: 0px;
+  color: #497087;
 }
 
 .course-name span {
@@ -5745,6 +5812,7 @@ onActivated(() => {
   line-height: 1.4;
   padding: 0 1.04vw;
   /* 添加左右内边距 */
+  font-weight: 600;
 }
 
 .activity-details {
@@ -6172,7 +6240,7 @@ onActivated(() => {
   /* height: 5.21vh; */
   padding: 0.52vh 0.57vw;
   /* 100px转换为vh，进一步增加高度 */
-  background: url('https://lanhu-oss-2537-2.lanhuapp.com/SketchPng9491a7fe5bdac8e8a88de63907163bd6b8a259824f56a3c76784ba6cdc7bc32b') 100% no-repeat;
+  background: #F5F8FB;
   background-size: 100% 100%;
   margin-top: 0.26vh;
   /* 5px转换为vh */
@@ -7043,6 +7111,7 @@ onActivated(() => {
 }
 
 .account-display {
+  padding-left: 15px;
   width: 100%;
   height: 41px;
   background: #F5F8FB;
@@ -7609,7 +7678,7 @@ onActivated(() => {
   /* 4px转换为vw，减小图标和文字间距 */
   padding: 0.52vh 0.73vw;
   /* 10px 14px转换 */
-  font-size: 10px;
+  font-size: 14px;
   /* 14px转换为vw */
   font-family: Helvetica, 'Microsoft YaHei', Arial, sans-serif;
   color: #000;
@@ -7620,9 +7689,9 @@ onActivated(() => {
 }
 
 .menu-icon {
-  width: 12px;
-  /* 24px转换为vw，增加一倍 */
-  height: 12px;
+  width: 18px;
+  /* 84px转换为vw，增加一倍 */
+  height: 18px;
   /* 24px转换为vh，增加一倍 */
   object-fit: contain;
   flex-shrink: 0;
@@ -7643,13 +7712,13 @@ onActivated(() => {
 }
 
 .file-icon {
-  width: 5.21vw;
+  width: 131px;
   /* 100px转换为vw */
-  height: 5.21vw;
+  height: 131px;
   /* 100px转换为vw */
-  margin-top: 4.56vh;
+  margin-left: 0.5vw;
+  margin-top: 1.5vh;
   /* 30px转换为vh，增加顶部间距，图片下移 */
-  margin-left: 1.26vh;
   display: flex;
   align-items: center;
   justify-content: center;