diff --git a/chat_web_front/src/components/ReadingBox.vue b/chat_web_front/src/components/ReadingBox.vue
index 7a098f0..152035e 100644
--- a/chat_web_front/src/components/ReadingBox.vue
+++ b/chat_web_front/src/components/ReadingBox.vue
@@ -64,18 +64,21 @@ defineExpose({
 <style lang="less" scoped>
 .head {
   display: flex;
-  //第三个title的margin-left为40px
+  flex-wrap: nowrap;
+  overflow-x: auto;
+  &::-webkit-scrollbar { height: 0; }
   .tagLeft{
-    margin-left: 20px;
+    margin-left: 10px;
   }
   .title {
-    min-width: 58px;
+    min-width: auto;
     height: 28px;
-    margin: 20px 15px 0 15px;
+    margin: 16px 8px 0 8px;
     font-family: PingFang SC, PingFang SC;
     font-weight: bold;
-    font-size: 20px;
+    font-size: 15px;
     cursor: pointer;
+    white-space: nowrap;
   }
 
   .active {
@@ -83,16 +86,16 @@ defineExpose({
   }
 
   .title-tag {
-    width: 58px;
-    height: 8px;
-    margin-left: 15px;
+    width: 40px;
+    height: 6px;
+    margin-left: 8px;
     margin-top: 3px;
     background: linear-gradient(90deg, #1F4D9B 0%, rgba(211, 232, 255, 0) 100%);
     border-radius: 8px 0px 0px 0px;
   }
 }
 .message-box{
-  height: calc(100% - 58px);
+  height: calc(100% - 50px);
   overflow: auto;
   &::-webkit-scrollbar {
     width: 0;
diff --git a/chat_web_front/src/views/reading/index.vue b/chat_web_front/src/views/reading/index.vue
index 6d53906..45f390b 100644
--- a/chat_web_front/src/views/reading/index.vue
+++ b/chat_web_front/src/views/reading/index.vue
@@ -1,106 +1,119 @@
 <template>
   <div class="reading-layout">
     <!-- 左栏：文件管理树 -->
-    <div class="left-panel">
-      <div class="left-header">
-        <div class="left-title">文件管理</div>
-        <div class="left-actions">
-          <img src="@/assets/images/reading/create.png" alt="新建" title="新建文件夹" class="action-icon" @click="createFolder()">
+    <div class="left-panel" :style="{ width: leftCollapsed ? '0px' : leftWidth + 'px' }" v-show="!leftCollapsed">
+      <div class="panel-card">
+        <div class="left-header">
+          <div class="left-title">文件管理</div>
+          <div class="left-actions">
+            <img src="@/assets/images/reading/create.png" alt="新建" title="新建文件夹" class="action-icon" @click="createFolder()">
+            <span class="collapse-btn" title="收起" @click="leftCollapsed = true">«</span>
+          </div>
         </div>
-      </div>
 
-      <div class="left-search">
-        <el-input v-model="searchWord" placeholder="搜索文件..." size="small" clearable>
-          <template #prefix>
-            <img src="@/assets/images/search.png" style="width:14px;height:14px;">
-          </template>
-        </el-input>
-      </div>
+        <div class="left-search">
+          <el-input v-model="searchWord" placeholder="搜索文件..." size="small" clearable>
+            <template #prefix>
+              <img src="@/assets/images/search.png" style="width:14px;height:14px;">
+            </template>
+          </el-input>
+        </div>
 
-      <div class="left-tree">
-        <el-tree
-          ref="treeRef"
-          :data="filteredTreeData"
-          :props="treeProps"
-          node-key="id"
-          :expand-on-click-node="false"
-          :default-expand-all="false"
-          highlight-current
-          @node-click="handleNodeClick"
-        >
-          <template #default="{ node, data }">
-            <div class="tree-node" :class="{ 'is-file': !data.isFolder, 'is-selected-file': selectedFile && selectedFile.fileId === data.id && !data.isFolder }">
-              <div class="tree-node-content">
-                <img v-if="data.isFolder" src="@/assets/images/reading/folder.png" class="tree-icon folder-icon">
-                <span v-else class="tree-file-icon">{{ getFileIcon(data.label) }}</span>
-                <span class="tree-label" :title="data.label">{{ data.label }}</span>
+        <div class="left-tree">
+          <el-tree
+            ref="treeRef"
+            :data="filteredTreeData"
+            :props="treeProps"
+            node-key="treeId"
+            :expand-on-click-node="false"
+            :default-expand-all="false"
+            highlight-current
+            show-checkbox
+            @node-click="handleNodeClick"
+            @check-change="handleCheckChange"
+          >
+            <template #default="{ node, data }">
+              <div class="tree-node" :class="{ 'is-file': !data.isFolder, 'is-selected-file': selectedFile && selectedFile.fileId === data.id && !data.isFolder }">
+                <div class="tree-node-content">
+                  <img v-if="data.isFolder" src="@/assets/images/reading/folder.png" class="tree-icon folder-icon">
+                  <span v-else class="tree-file-icon">{{ getFileIcon(data.label) }}</span>
+                  <span class="tree-label" :title="data.label">{{ data.label }}</span>
+                </div>
+                <div class="tree-node-actions" @click.stop>
+                  <el-dropdown trigger="click" size="small">
+                    <img src="@/assets/images/reading/operates.png" class="tree-operate-icon">
+                    <template #dropdown>
+                      <el-dropdown-menu>
+                        <template v-if="data.isFolder">
+                          <el-dropdown-item @click="uploadToFolder(data)">上传文件</el-dropdown-item>
+                          <el-dropdown-item @click="createFolder(data)">重命名</el-dropdown-item>
+                          <el-dropdown-item @click="delFolder(data)" style="color:#BE0000">删除</el-dropdown-item>
+                        </template>
+                        <template v-else>
+                          <el-dropdown-item @click="renameFile(data)">重命名</el-dropdown-item>
+                          <el-dropdown-item @click="downLoadDoc(data)">下载</el-dropdown-item>
+                          <el-dropdown-item @click="delFileItem(data)" style="color:#BE0000">删除</el-dropdown-item>
+                        </template>
+                      </el-dropdown-menu>
+                    </template>
+                  </el-dropdown>
+                </div>
               </div>
-              <div class="tree-node-actions" v-if="data.isFolder" @click.stop>
-                <el-dropdown trigger="click" size="small">
-                  <img src="@/assets/images/reading/operates.png" class="tree-operate-icon">
-                  <template #dropdown>
-                    <el-dropdown-menu>
-                      <el-dropdown-item @click="uploadToFolder(data)">上传文件</el-dropdown-item>
-                      <el-dropdown-item @click="createFolder(data)">重命名</el-dropdown-item>
-                      <el-dropdown-item @click="delFolder(data)" style="color:#BE0000">删除</el-dropdown-item>
-                    </el-dropdown-menu>
-                  </template>
-                </el-dropdown>
-              </div>
-              <div class="tree-node-actions" v-if="!data.isFolder" @click.stop>
-                <el-dropdown trigger="click" size="small">
-                  <img src="@/assets/images/reading/operates.png" class="tree-operate-icon">
-                  <template #dropdown>
-                    <el-dropdown-menu>
-                      <el-dropdown-item @click="renameFile(data)">重命名</el-dropdown-item>
-                      <el-dropdown-item @click="downLoadDoc(data)">下载</el-dropdown-item>
-                      <el-dropdown-item @click="delFile(data)" style="color:#BE0000">删除</el-dropdown-item>
-                    </el-dropdown-menu>
-                  </template>
-                </el-dropdown>
-              </div>
-            </div>
-          </template>
-        </el-tree>
-      </div>
+            </template>
+          </el-tree>
+        </div>
 
-      <div class="left-footer">
-        <div class="batch-del-btn" @click="delBatch">
-          <img src="@/assets/images/reading/del.png" alt="">
-          <span>批量删除</span>
+        <div class="left-footer">
+          <div class="batch-del-btn" @click="delBatch">
+            <img src="@/assets/images/reading/del.png" alt="">
+            <span>批量删除</span>
+          </div>
         </div>
       </div>
     </div>
 
+    <!-- 左栏展开按钮（折叠时显示） -->
+    <div class="expand-btn" v-if="leftCollapsed" @click="leftCollapsed = false" title="展开文件管理">»</div>
+
+    <!-- 左分隔条（可拖拽） -->
+    <div class="splitter" v-show="!leftCollapsed" @mousedown="startResizeLeft"></div>
+
     <!-- 中间栏：文件预览 -->
     <div class="center-panel">
-      <div v-if="!selectedFile" class="center-placeholder">
-        <div class="placeholder-content">
-          <img src="@/assets/images/reading/empty.png" alt="" style="width:80px;height:80px;opacity:0.5;">
-          <p>点击左侧文件查看内容</p>
+      <div class="panel-card">
+        <div v-if="!selectedFile" class="center-placeholder">
+          <div class="placeholder-content">
+            <img src="@/assets/images/reading/empty.png" alt="" style="width:80px;height:80px;opacity:0.5;">
+            <p>点击左侧文件查看内容</p>
+          </div>
         </div>
-      </div>
-      <div v-else class="center-content">
-        <div class="center-header">
-          <span class="center-title" :title="selectedFile.fileName">{{ selectedFile.fileName }}</span>
-        </div>
-        <div class="file-content" ref="fileContent" id="file-content">
-          <div class="view-md" id="file-html-content" v-html="docHtml"></div>
-          <div id="note-content" :title="noteContent" class="file-note"></div>
+        <div v-else class="center-content">
+          <div class="center-header">
+            <span class="center-title" :title="selectedFile.fileName">{{ selectedFile.fileName }}</span>
+          </div>
+          <div class="file-content" ref="fileContent" id="file-content">
+            <div class="view-md" id="file-html-content" v-html="docHtml"></div>
+            <div id="note-content" :title="noteContent" class="file-note"></div>
+          </div>
         </div>
       </div>
     </div>
 
+    <!-- 右分隔条（可拖拽） -->
+    <div class="splitter" @mousedown="startResizeRight"></div>
+
     <!-- 右栏：ReadingBox -->
-    <div class="right-panel">
-      <div v-if="!selectedFile" class="right-placeholder">
-        <div class="placeholder-content">
-          <img src="@/assets/images/reading/empty.png" alt="" style="width:60px;height:60px;opacity:0.4;">
-          <p class="placeholder-title">知识库问答</p>
-          <p class="placeholder-sub">选择文件后开始提问</p>
+    <div class="right-panel" :style="{ width: rightWidth + 'px' }">
+      <div class="panel-card right-card">
+        <div v-if="!selectedFile" class="right-placeholder">
+          <div class="placeholder-content">
+            <img src="@/assets/images/reading/empty.png" alt="" style="width:60px;height:60px;opacity:0.4;">
+            <p class="placeholder-title">知识库问答</p>
+            <p class="placeholder-sub">选择文件后开始提问</p>
+          </div>
         </div>
+        <ReadingBox v-else ref="readingBox" />
       </div>
-      <ReadingBox v-else ref="readingBox" />
     </div>
 
     <!-- 右键菜单 -->
@@ -113,10 +126,8 @@
   </div>
 
   <!-- 创建/重命名文件夹弹框 -->
-  <el-dialog v-model="folderDialogVisible" :title="folderDialogTitle" width="500"
-             :close-on-click-modal="false">
-    <el-input v-model="submitFolderParam.name" placeholder="请输入文件夹名称"
-              @keyup.enter="submitFolderName"></el-input>
+  <el-dialog v-model="folderDialogVisible" :title="folderDialogTitle" width="500" :close-on-click-modal="false">
+    <el-input v-model="submitFolderParam.name" placeholder="请输入文件夹名称" @keyup.enter="submitFolderName"></el-input>
     <template #footer>
       <el-button @click="folderDialogVisible = false">取消</el-button>
       <el-button type="primary" @click="submitFolderName">确定</el-button>
@@ -133,26 +144,15 @@
   </el-dialog>
 
   <!-- 上传文件弹框 -->
-  <el-dialog v-model="showUploadDialog" title="上传文件" width="715" @close="closeUpload()"
-             :close-on-click-modal="false">
-    <el-upload
-        class="upload-demo"
-        action="#"
-        :auto-upload="false"
-        accept=".pdf,.docx,.txt,.xlsx,.xls"
-        name="files"
-        multiple
-        :show-file-list="false"
-        :on-change="handleFileChange"
-    >
+  <el-dialog v-model="showUploadDialog" title="上传文件" width="715" @close="closeUpload()" :close-on-click-modal="false">
+    <el-upload class="upload-demo" action="#" :auto-upload="false" accept=".pdf,.docx,.txt,.xlsx,.xls"
+        name="files" multiple :show-file-list="false" :on-change="handleFileChange">
       <el-icon :size="100" class="el-icon--upload" style="display: flex;flex-wrap: wrap">
         <upload-filled style="color: #004EA0"/>
         <span style="margin-top:-50px;font-size:13px; font-style: normal;color:#004EA0">选择文件</span>
       </el-icon>
       <template #tip>
-        <div class="el-upload__tip">
-          支持TXT/DOCX/PDF/XLSX/XLS格式文件，文件大小不超过10M
-        </div>
+        <div class="el-upload__tip">支持TXT/DOCX/PDF/XLSX/XLS格式文件，文件大小不超过10M</div>
       </template>
     </el-upload>
     <div class="files-upload-result">
@@ -160,35 +160,26 @@
         <div class="file-name" :title="item.name">{{ item.name }}</div>
         <div class="result-info">
           <div class="fail-msg" v-if="item.status === 'fail'" :title="item.message">{{ item.message }}</div>
-          <img class="upload-remove" v-if="item.status === 'ready'" src="@/assets/images/reading/upload_remove.png"
-               alt="" @click="handleRemove(item)">
-          <div class="loading" v-if="item.status === 'uploading'">
-            <Loading></Loading>
-          </div>
-          <img v-if="item.status === 'success'" src="@/assets/images/reading/upload_success.png" alt="">
-          <img v-if="item.status === 'fail'" src="@/assets/images/reading/upload_fail.png" alt="">
+          <img class="upload-remove" v-if="item.status === 'ready'" src="@/assets/images/reading/upload_remove.png" @click="handleRemove(item)">
+          <div class="loading" v-if="item.status === 'uploading'"><Loading /></div>
+          <img v-if="item.status === 'success'" src="@/assets/images/reading/upload_success.png">
+          <img v-if="item.status === 'fail'" src="@/assets/images/reading/upload_fail.png">
         </div>
       </div>
     </div>
     <template #footer>
       <div style="text-align: center" v-if="uploadingFileList.length > 0">
         <el-button @click="closeUpload()">关闭</el-button>
-        <div class="dialog-tips">
-          <img src="@/assets/images/reading/tips.png" alt="">
-          <span>关闭弹窗后文件将继续上传</span>
-        </div>
+        <div class="dialog-tips"><img src="@/assets/images/reading/tips.png"><span>关闭弹窗后文件将继续上传</span></div>
       </div>
     </template>
   </el-dialog>
 
   <!-- 添加笔记弹框 -->
-  <el-dialog v-model="showAddNoteDialog" title="写下你的想法吧" width="715"
-             :close-on-click-modal="false" @open="openAddNoteDialog">
+  <el-dialog v-model="showAddNoteDialog" title="写下你的想法吧" width="715" :close-on-click-modal="false" @open="openAddNoteDialog">
     <el-input ref="noteMsgRef" v-model="noteMsg" type="textarea" :rows="10" placeholder="请输入笔记内容"/>
     <template #footer>
-      <div style="text-align: center;">
-        <el-button type="primary" @click="submitNote()">发表</el-button>
-      </div>
+      <div style="text-align: center;"><el-button type="primary" @click="submitNote()">发表</el-button></div>
     </template>
   </el-dialog>
 </template>
@@ -209,11 +200,55 @@ import {UploadFilled} from '@element-plus/icons-vue';
 import {ElMessage, ElMessageBox, type UploadFile, type UploadFiles} from "element-plus";
 import Mark from "mark.js";
 
+// ===================== 面板尺寸与折叠 =====================
+const leftWidth = ref(280);
+const rightWidth = ref(420);
+const leftCollapsed = ref(false);
+let resizingPanel = '' as '' | 'left' | 'right';
+let startX = 0;
+let startWidth = 0;
+
+const startResizeLeft = (e: MouseEvent) => {
+  resizingPanel = 'left';
+  startX = e.clientX;
+  startWidth = leftWidth.value;
+  document.addEventListener('mousemove', onResize);
+  document.addEventListener('mouseup', stopResize);
+  document.body.style.cursor = 'col-resize';
+  document.body.style.userSelect = 'none';
+};
+const startResizeRight = (e: MouseEvent) => {
+  resizingPanel = 'right';
+  startX = e.clientX;
+  startWidth = rightWidth.value;
+  document.addEventListener('mousemove', onResize);
+  document.addEventListener('mouseup', stopResize);
+  document.body.style.cursor = 'col-resize';
+  document.body.style.userSelect = 'none';
+};
+const onResize = (e: MouseEvent) => {
+  if (resizingPanel === 'left') {
+    const newWidth = startWidth + (e.clientX - startX);
+    leftWidth.value = Math.max(200, Math.min(500, newWidth));
+  } else if (resizingPanel === 'right') {
+    const newWidth = startWidth - (e.clientX - startX);
+    rightWidth.value = Math.max(300, Math.min(600, newWidth));
+  }
+};
+const stopResize = () => {
+  resizingPanel = '';
+  document.removeEventListener('mousemove', onResize);
+  document.removeEventListener('mouseup', stopResize);
+  document.body.style.cursor = '';
+  document.body.style.userSelect = '';
+};
+
 // ===================== 文件树数据 =====================
 const treeRef = ref(null);
 const searchWord = ref('');
 const treeData = ref<any[]>([]);
 const treeProps = { children: 'children', label: 'label' };
+const checkedNodes = ref<any[]>([]);
 
 // ===================== 选中文件 =====================
 const selectedFile = ref<any>(null);
@@ -293,13 +328,15 @@ const FILE_MAX_SIZE = 10 * 1024 * 1024;
 const TOTAL_FILE_MAX_SIZE = 50 * 1024 * 1024;
 
 // ========================================
-// 文件树：加载、过滤
+// 文件树：加载、过滤、checkbox
 // ========================================
+let treeIdCounter = 0;
 const loadTreeData = async () => {
   try {
     let res = await getKnowledgeBaseList<any>({ folderType: "0" });
     if (res && res.data) {
       const folders = res.data.map((f: any) => ({
+        treeId: 'folder-' + f.id,
         id: f.id, label: f.name, isFolder: true, children: [], raw: f, loaded: false
       }));
       treeData.value = folders;
@@ -317,6 +354,7 @@ const loadFolderFiles = async (folder: any) => {
     });
     if (res && res.data) {
       folder.children = res.data.map((f: any) => ({
+        treeId: 'file-' + f.id,
         id: f.id, label: f.filename, isFolder: false, isLeaf: true, raw: f,
         folderId: folder.id, folderName: folder.label
       }));
@@ -334,15 +372,12 @@ const filteredTreeData = computed(() => {
     const folderMatch = folder.label.toLowerCase().includes(keyword);
     const childMatch = folder.children?.some((f: any) => f.label.toLowerCase().includes(keyword));
     return folderMatch || childMatch;
-  }).map((folder: any) => {
-    if (!searchWord.value.trim()) return folder;
-    return {
-      ...folder,
-      children: folder.children?.filter((f: any) =>
-        f.label.toLowerCase().includes(keyword) || folder.label.toLowerCase().includes(keyword)
-      )
-    };
-  });
+  }).map((folder: any) => ({
+    ...folder,
+    children: folder.children?.filter((f: any) =>
+      f.label.toLowerCase().includes(keyword) || folder.label.toLowerCase().includes(keyword)
+    )
+  }));
 });
 
 const handleNodeClick = async (data: any) => {
@@ -350,14 +385,10 @@ const handleNodeClick = async (data: any) => {
     await loadFolderFiles(data);
     return;
   }
-  // 点击文件
   const doc = data.raw;
   selectedFile.value = {
-    fileId: doc.id,
-    fileName: doc.filename,
-    embeddingId: doc.embeddingId,
-    folderId: data.folderId,
-    folderName: data.folderName,
+    fileId: doc.id, fileName: doc.filename, embeddingId: doc.embeddingId,
+    folderId: data.folderId, folderName: data.folderName,
     articleAbstract: doc.articleAbstract || '暂无内容，请重试',
     articleKeywords: doc.articleKeywords || '暂无内容，请重试',
     articleParagraph: doc.articleParagraph || '暂无内容，请重试',
@@ -366,17 +397,22 @@ const handleNodeClick = async (data: any) => {
   await loadFileContent();
 };
 
+const handleCheckChange = () => {
+  if (treeRef.value) {
+    checkedNodes.value = (treeRef.value as any).getCheckedNodes();
+  }
+};
+
 const getFileIcon = (filename: string) => {
   const ext = filename?.split('.').pop()?.toLowerCase() || '';
   const icons: Record<string, string> = {
-    'pdf': '📄', 'docx': '📝', 'doc': '📝', 'txt': '📃',
-    'xlsx': '📊', 'xls': '📊', 'md': '📋'
+    'pdf': '📄', 'docx': '📝', 'doc': '📝', 'txt': '📃', 'xlsx': '📊', 'xls': '📊', 'md': '📋'
   };
   return icons[ext] || '📄';
 };
 
 // ========================================
-// 文件预览：加载内容、笔记、交互
+// 文件预览：加载内容
 // ========================================
 const pattern = /(\$\$.*?\$\$|\$.*?\$)/g;
 
@@ -392,45 +428,30 @@ const loadFileContent = async () => {
     if (res && res.code === 200 && res.data && res.data.content) {
       let content = res.data.content;
       content = content.replace(pattern, (match: string, _cg: string, offset: number) => {
-        offsets.push(offset);
-        return transforMd(match);
+        offsets.push(offset); return transforMd(match);
       });
       docHtml.value = content.replace(/<p>(.*?<span class="katex">.*?<\/span>.*?)<\/p>/g, '$1');
       fileNote.notes = res.data.notes || [];
     } else {
       docHtml.value = '<p style="color:#999;text-align:center;margin-top:40px;">文件内容获取失败</p>';
     }
-  } catch (error: any) {
+  } catch {
     docHtml.value = '<p style="color:#999;text-align:center;margin-top:40px;">文件内容获取失败</p>';
   }
   await nextTick();
-  try {
-    handelLaTeXElements(offsets);
-    handelCommentElements();
-    bindFileContentEvents();
-    handelNoteFlagMouseEvent();
-  } catch (err) { /* ignore */ }
+  try { handelLaTeXElements(offsets); handelCommentElements(); bindFileContentEvents(); handelNoteFlagMouseEvent(); } catch {}
 };
 
-provide('updateFileContent', async () => {
-  await loadFileContent();
-});
+provide('updateFileContent', async () => { await loadFileContent(); });
 
 const handelLaTeXElements = (offsets: number[]) => {
-  let katexElements = document.querySelectorAll('span[class="katex"]');
-  for (let i = 0; i < katexElements.length; i++) {
-    katexElements[i].setAttribute('id', 'katex-' + offsets[i]);
-  }
+  let els = document.querySelectorAll('span[class="katex"]');
+  for (let i = 0; i < els.length; i++) els[i].setAttribute('id', 'katex-' + offsets[i]);
 };
-
 const handelCommentElements = () => {
-  document.querySelectorAll('a[href^="#comment-"]').forEach(element => {
-    let targetId = element.getAttribute('href');
-    (element as HTMLElement).onclick = function (e) {
-      e.preventDefault();
-      const targetElement = document.querySelector(targetId!);
-      if (targetElement) targetElement.scrollIntoView({ behavior: 'smooth' });
-    };
+  document.querySelectorAll('a[href^="#comment-"]').forEach(el => {
+    let targetId = el.getAttribute('href');
+    (el as HTMLElement).onclick = (e) => { e.preventDefault(); document.querySelector(targetId!)?.scrollIntoView({ behavior: 'smooth' }); };
   });
 };
 
@@ -439,63 +460,36 @@ const handelCommentElements = () => {
 // ========================================
 const fileContentMenu = (index: number) => {
   disShowShortMenu();
-  if (index === 0) {
-    quoteMsg.value = selectText.value;
-    if (quoteMsg.value && quoteMsg.value.length > 1000) quoteMsg.value = quoteMsg.value.slice(0, 1000);
-    readingBox.value?.changeHead(2);
-  }
-  if (index === 1) {
-    copyToClip(selectText.value);
-    ElMessage.success("复制成功");
-  }
-  if (index === 2) {
-    let sendText = "我想请你解释一下这个词语的含义：" + selectText.value;
-    readingBox.value?.changeHead(2);
-    readingBox.value?.readingBoxSend(sendText, '1');
-  }
-  if (index === 3) {
-    readingBox.value?.changeHead(3);
-    showAddNoteDialog.value = true;
-  }
-  if (index === 4) {
-    readingBox.value?.changeHead(4);
-    readingBox.value?.translateQuery(selectText.value);
-  }
+  if (index === 0) { quoteMsg.value = selectText.value?.slice(0, 1000) || ''; readingBox.value?.changeHead(2); }
+  if (index === 1) { copyToClip(selectText.value); ElMessage.success("复制成功"); }
+  if (index === 2) { readingBox.value?.changeHead(2); readingBox.value?.readingBoxSend("我想请你解释一下这个词语的含义：" + selectText.value, '1'); }
+  if (index === 3) { readingBox.value?.changeHead(3); showAddNoteDialog.value = true; }
+  if (index === 4) { readingBox.value?.changeHead(4); readingBox.value?.translateQuery(selectText.value); }
 };
-
 const disShowShortMenu = () => { shortMenuShow.value = false; };
 
 const bindFileContentEvents = () => {
   if (!fileContent.value) return;
-
-  fileContent.value.addEventListener('mouseup', function (event: MouseEvent) {
-    activeNoteIndex.value = -1;
-    displayFileNote();
-    removeHighlightSelectedWord();
+  fileContent.value.addEventListener('mouseup', (event: MouseEvent) => {
+    activeNoteIndex.value = -1; displayFileNote(); removeHighlightSelectedWord();
     setTimeout(() => {
-      const selection = window.getSelection();
-      if (!selection) return;
-      selectText.value = selection.toString();
-      let position = getGlobalSelectionPosition(selection);
-      positionInfo.value = position;
-      if (selectText.value && shortMenuDom.value && fileContent.value?.contains(selection.anchorNode)) {
-        let offset = getViewportOffsetByEvent(event);
+      const sel = window.getSelection(); if (!sel) return;
+      selectText.value = sel.toString();
+      positionInfo.value = getGlobalSelectionPosition(sel);
+      if (selectText.value && shortMenuDom.value && fileContent.value?.contains(sel.anchorNode)) {
         shortMenuShow.value = true;
-        (shortMenuDom.value as HTMLElement).style.left = offset.left + 'px';
-        (shortMenuDom.value as HTMLElement).style.top = offset.top + 'px';
+        (shortMenuDom.value as HTMLElement).style.left = event.clientX + 'px';
+        (shortMenuDom.value as HTMLElement).style.top = event.clientY + 'px';
       }
     });
   });
-
   fileContent.value.addEventListener('scroll', () => {
-    let noteElement = document.getElementById('note-' + (activeNoteIndex.value + 1));
-    let noteContentElement = document.getElementById('note-content');
-    if (noteElement && noteContentElement) {
-      const rectNoteElement = noteElement.getBoundingClientRect();
-      let top = rectNoteElement.top - rectNoteElement.height - 8;
-      noteContentElement.style.top = top + 'px';
-      if (top < 75) noteContentElement.style.display = 'none';
-      else if (activeNoteIndex.value != -1) noteContentElement.style.display = 'block';
+    let noteEl = document.getElementById('note-' + (activeNoteIndex.value + 1));
+    let ncEl = document.getElementById('note-content');
+    if (noteEl && ncEl) {
+      let top = noteEl.getBoundingClientRect().top - noteEl.getBoundingClientRect().height - 8;
+      ncEl.style.top = top + 'px';
+      ncEl.style.display = top < 75 ? 'none' : (activeNoteIndex.value != -1 ? 'block' : 'none');
     }
   });
 };
@@ -503,129 +497,47 @@ const bindFileContentEvents = () => {
 // ========================================
 // 笔记功能
 // ========================================
-const openAddNoteDialog = async () => {
-  await nextTick();
-  noteMsgRef.value?.focus();
-};
+const openAddNoteDialog = async () => { await nextTick(); noteMsgRef.value?.focus(); };
 
 const submitNote = async () => {
   if (noteParam.value.id) {
     noteParam.value.noteContent = noteMsg.value;
-    try {
-      let res = await withLoading(addFileNote)(noteParam.value);
-      if (res.code == 200) {
-        ElMessage.success('笔记修改成功');
-        showAddNoteDialog.value = false;
-        noteMsg.value = '';
-        await loadFileContent();
-      } else ElMessage.error('笔记修改失败');
-    } catch (error: any) { ElMessage.error(error?.message || '未知错误'); }
+    try { let res = await withLoading(addFileNote)(noteParam.value); if (res.code == 200) { ElMessage.success('笔记修改成功'); showAddNoteDialog.value = false; noteMsg.value = ''; await loadFileContent(); } else ElMessage.error('笔记修改失败'); } catch (e: any) { ElMessage.error(e?.message || '未知错误'); }
   } else {
-    noteParam.value.fileId = selectedFile.value?.fileId;
-    noteParam.value.pstartId = positionInfo.value.parentStart || '';
-    noteParam.value.pendId = positionInfo.value.parentEnd || '';
-    noteParam.value.wordContent = selectText.value;
-    noteParam.value.startIndex = positionInfo.value.start;
-    noteParam.value.endIndex = positionInfo.value.end;
-    noteParam.value.noteContent = noteMsg.value;
-    try {
-      let res = await withLoading(addFileNote)(noteParam.value);
-      if (res.code == 200) {
-        ElMessage.success('笔记添加成功');
-        showAddNoteDialog.value = false;
-        noteMsg.value = '';
-        await loadFileContent();
-      } else ElMessage.error('笔记添加失败');
-    } catch (error: any) { ElMessage.error(error?.message || '未知错误'); }
+    Object.assign(noteParam.value, { fileId: selectedFile.value?.fileId, pstartId: positionInfo.value.parentStart || '', pendId: positionInfo.value.parentEnd || '', wordContent: selectText.value, startIndex: positionInfo.value.start, endIndex: positionInfo.value.end, noteContent: noteMsg.value });
+    try { let res = await withLoading(addFileNote)(noteParam.value); if (res.code == 200) { ElMessage.success('笔记添加成功'); showAddNoteDialog.value = false; noteMsg.value = ''; await loadFileContent(); } else ElMessage.error('笔记添加失败'); } catch (e: any) { ElMessage.error(e?.message || '未知错误'); }
   }
 };
 
 const displayFileNote = () => {
-  const noteElements = document.querySelectorAll('span[id^="note-"]');
-  noteElements.forEach((element) => { element.classList.remove('note-flag-active'); });
-  let noteContentElement = document.getElementById('note-content');
-  if (noteContentElement) noteContentElement.style.display = 'none';
-  const previousHighlights = document.querySelectorAll('.highlight');
-  previousHighlights.forEach(highlight => {
-    const parent = highlight.parentNode!;
-    const textNode = document.createTextNode(highlight.textContent || '');
-    parent.replaceChild(textNode, highlight);
-    parent.normalize();
-  });
+  document.querySelectorAll('span[id^="note-"]').forEach(el => el.classList.remove('note-flag-active'));
+  let ncEl = document.getElementById('note-content'); if (ncEl) ncEl.style.display = 'none';
+  document.querySelectorAll('.highlight').forEach(hl => { const p = hl.parentNode!; p.replaceChild(document.createTextNode(hl.textContent || ''), hl); p.normalize(); });
 };
 
-const showFileNote = (note: any, isPosition: boolean = false) => {
-  displayFileNote();
-  if (!note) return;
-  let noteElement = document.getElementById('note-' + (activeNoteIndex.value + 1));
-  let noteContentEl = document.getElementById('note-content');
-  let fileContentEl = document.getElementById("file-content");
-  if (!fileContentEl) return;
-  const rectFileContent = fileContentEl.getBoundingClientRect();
-  if (noteElement) {
-    noteElement.classList.add('note-flag-active');
-    highlightSelectedWord(note);
-    if (isPosition) {
-      let selectedElements = document.querySelectorAll('mark[class^="highlight"]');
-      if (selectedElements.length > 0) selectedElements[0].scrollIntoView({ behavior: 'smooth', block: 'center' });
-    }
+const showFileNote = (note: any, isPosition = false) => {
+  displayFileNote(); if (!note) return;
+  let noteEl = document.getElementById('note-' + (activeNoteIndex.value + 1));
+  let ncEl = document.getElementById('note-content');
+  let fcEl = document.getElementById("file-content"); if (!fcEl) return;
+  const rcFC = fcEl.getBoundingClientRect();
+  if (noteEl) {
+    noteEl.classList.add('note-flag-active');
+    new Mark('#file-html-content').markRanges([{ start: note.startIndex, length: note.endIndex - note.startIndex }], { className: 'highlight', exclude: ['.note-flag'] });
+    if (isPosition) { let sels = document.querySelectorAll('mark[class^="highlight"]'); if (sels.length > 0) sels[0].scrollIntoView({ behavior: 'smooth', block: 'center' }); }
     noteContent.value = note.noteContent;
-    const rectNoteElement = noteElement.getBoundingClientRect();
-    if (noteContentEl) {
-      noteContentEl.innerHTML = noteContent.value;
-      noteContentEl.style.display = 'block';
-      let rectNoteContentElement = noteContentEl.getBoundingClientRect();
-      let left = rectNoteElement.left - 10;
-      if (left + rectNoteContentElement.width > rectFileContent.width) left = rectFileContent.width - rectNoteContentElement.width;
-      noteContentEl.style.left = left + 'px';
-      noteContentEl.style.top = rectNoteElement.top - rectNoteElement.height - 8 + 'px';
-    }
+    const rn = noteEl.getBoundingClientRect();
+    if (ncEl) { ncEl.innerHTML = noteContent.value; ncEl.style.display = 'block'; let rnc = ncEl.getBoundingClientRect(); let left = rn.left - 10; if (left + rnc.width > rcFC.width) left = rcFC.width - rnc.width; ncEl.style.left = left + 'px'; ncEl.style.top = rn.top - rn.height - 8 + 'px'; }
   }
 };
 
-const highlightSelectedWord = (note: any) => {
-  if (!note) return;
-  let marked = new Mark('#file-html-content');
-  marked.markRanges([{ start: note.startIndex, length: note.endIndex - note.startIndex }], {
-    className: 'highlight', exclude: ['.note-flag']
-  });
-};
-
-const removeHighlightSelectedWord = () => {
-  const previousHighlights = document.querySelectorAll('.highlight');
-  previousHighlights.forEach(highlight => {
-    const parent = highlight.parentNode!;
-    const textNode = document.createTextNode(highlight.textContent || '');
-    parent.replaceChild(textNode, highlight);
-  });
-};
+const removeHighlightSelectedWord = () => { document.querySelectorAll('.highlight').forEach(hl => { const p = hl.parentNode!; p.replaceChild(document.createTextNode(hl.textContent || ''), hl); }); };
 
 const handelNoteFlagMouseEvent = () => {
-  const noteElements = document.querySelectorAll('span[id^="note-"]');
-  noteElements.forEach((element) => {
-    element.addEventListener('mouseover', () => {
-      showFileNoteEvent.value = 'mouseover';
-      let elementId = Number(element.id.replace('note-', ''));
-      for (let i = 0; i < fileNote.notes.length; i++) {
-        if (i + 1 == elementId) { activeNoteIndex.value = i; showFileNote(fileNote.notes[i]); break; }
-      }
-    });
-    element.addEventListener('mouseleave', () => {
-      if (showFileNoteEvent.value === 'mouseover') { activeNoteIndex.value = -1; displayFileNote(); }
-    });
-    element.addEventListener('click', async (e) => {
-      showFileNoteEvent.value = 'click';
-      let elementId = Number(element.id.replace('note-', ''));
-      for (let i = 0; i < fileNote.notes.length; i++) {
-        if (i + 1 == elementId) { activeNoteIndex.value = i; break; }
-      }
-      readingBox.value?.changeHead(3);
-      await nextTick();
-      let rightNoteElement = document.getElementById('right-note-' + elementId);
-      if (rightNoteElement) rightNoteElement.scrollIntoView({ behavior: 'smooth' });
-      showFileNote(fileNote.notes[activeNoteIndex.value]);
-      e.stopPropagation();
-    });
+  document.querySelectorAll('span[id^="note-"]').forEach(el => {
+    el.addEventListener('mouseover', () => { showFileNoteEvent.value = 'mouseover'; let eid = Number(el.id.replace('note-', '')); for (let i = 0; i < fileNote.notes.length; i++) if (i + 1 == eid) { activeNoteIndex.value = i; showFileNote(fileNote.notes[i]); break; } });
+    el.addEventListener('mouseleave', () => { if (showFileNoteEvent.value === 'mouseover') { activeNoteIndex.value = -1; displayFileNote(); } });
+    el.addEventListener('click', async (e) => { showFileNoteEvent.value = 'click'; let eid = Number(el.id.replace('note-', '')); for (let i = 0; i < fileNote.notes.length; i++) if (i + 1 == eid) { activeNoteIndex.value = i; break; } readingBox.value?.changeHead(3); await nextTick(); document.getElementById('right-note-' + eid)?.scrollIntoView({ behavior: 'smooth' }); showFileNote(fileNote.notes[activeNoteIndex.value]); e.stopPropagation(); });
   });
 };
 
@@ -633,237 +545,113 @@ const handelNoteFlagMouseEvent = () => {
 // 文件夹操作
 // ========================================
 const createFolder = (item: any = null) => {
-  if (item) {
-    submitFolderParam.id = item.id;
-    submitFolderParam.name = item.label || item.name;
-    folderDialogTitle.value = "重命名文件夹";
-  } else {
-    submitFolderParam.id = 0;
-    submitFolderParam.name = "";
-    folderDialogTitle.value = "新建文件夹";
-  }
+  if (item) { submitFolderParam.id = item.id; submitFolderParam.name = item.label || item.name; folderDialogTitle.value = "重命名文件夹"; }
+  else { submitFolderParam.id = 0; submitFolderParam.name = ""; folderDialogTitle.value = "新建文件夹"; }
   folderDialogVisible.value = true;
 };
 
 const submitFolderName = async () => {
-  if (submitFolderParam.name.trim().length === 0) {
-    ElMessage.warning("请输入文件夹名称");
-    return;
-  }
+  if (!submitFolderParam.name.trim()) { ElMessage.warning("请输入文件夹名称"); return; }
   try {
-    if (submitFolderParam.id !== 0) {
-      let res = await withLoading(editKnowledgeBase<any>)({
-        id: submitFolderParam.id + "", name: submitFolderParam.name.trim(), folderType: "0"
-      });
-      if (res?.code === 200) ElMessage.success("重命名成功");
-      else ElMessage.error(res.msg);
-    } else {
-      let res = await withLoading(addKnowledgeBase<any>)({ name: submitFolderParam.name.trim() });
-      if (res?.code === 200) ElMessage.success("文件夹创建成功");
-      else ElMessage.error(res.msg);
-    }
-    folderDialogVisible.value = false;
-    await loadTreeData();
-  } catch (error: any) { ElMessage.error(error?.message || '未知错误'); }
+    if (submitFolderParam.id !== 0) { let res = await withLoading(editKnowledgeBase<any>)({ id: submitFolderParam.id + "", name: submitFolderParam.name.trim(), folderType: "0" }); if (res?.code === 200) ElMessage.success("重命名成功"); else ElMessage.error(res.msg); }
+    else { let res = await withLoading(addKnowledgeBase<any>)({ name: submitFolderParam.name.trim() }); if (res?.code === 200) ElMessage.success("文件夹创建成功"); else ElMessage.error(res.msg); }
+    folderDialogVisible.value = false; await loadTreeData(); for (let f of treeData.value) await loadFolderFiles(f);
+  } catch (e: any) { ElMessage.error(e?.message || '未知错误'); }
 };
 
 const delFolder = async (item: any) => {
-  ElMessageBox.confirm("确定删除该文件夹？", "提示", {
-    confirmButtonText: "确定", cancelButtonText: "取消", type: "warning",
-  }).then(async () => {
-    try {
-      let res = await withLoading(delKnowledgeBase<any>)({ knowledgeBaseId: item.id + "", folderType: "0" });
-      if (res?.code === 200) { ElMessage.success("删除成功"); await loadTreeData(); }
-      else ElMessage.error(res.msg);
-    } catch (error: any) { ElMessage.error(error?.message || '未知错误'); }
+  ElMessageBox.confirm("确定删除该文件夹？", "提示", { confirmButtonText: "确定", cancelButtonText: "取消", type: "warning" }).then(async () => {
+    try { let res = await withLoading(delKnowledgeBase<any>)({ knowledgeBaseId: item.id + "", folderType: "0" }); if (res?.code === 200) { ElMessage.success("删除成功"); await loadTreeData(); for (let f of treeData.value) await loadFolderFiles(f); } else ElMessage.error(res.msg); } catch (e: any) { ElMessage.error(e?.message || '未知错误'); }
   }).catch(() => {});
 };
 
-const delBatch = () => {
-  ElMessage.info("请使用文件夹或文件旁的操作菜单进行删除");
+const delBatch = async () => {
+  if (!treeRef.value) return;
+  const checked = (treeRef.value as any).getCheckedNodes();
+  const fileIds = checked.filter((n: any) => !n.isFolder).map((n: any) => n.id);
+  const folderIds = checked.filter((n: any) => n.isFolder).map((n: any) => n.id);
+  if (fileIds.length === 0 && folderIds.length === 0) { ElMessage.warning("请先勾选要删除的文件或文件夹"); return; }
+  ElMessageBox.confirm(`确定删除选中的 ${folderIds.length} 个文件夹和 ${fileIds.length} 个文件？`, "提示", { confirmButtonText: "确定", cancelButtonText: "取消", type: "warning" }).then(async () => {
+    try {
+      if (fileIds.length > 0) await delFiles({ fileList: fileIds, folderList: [] });
+      for (const fid of folderIds) await delKnowledgeBase<any>({ knowledgeBaseId: fid + "", folderType: "0" });
+      ElMessage.success("删除成功");
+      if (selectedFile.value && fileIds.includes(selectedFile.value.fileId)) { selectedFile.value = null; docHtml.value = ''; }
+      await loadTreeData(); for (let f of treeData.value) await loadFolderFiles(f);
+    } catch { ElMessage.error("删除失败"); }
+  }).catch(() => {});
 };
 
 // ========================================
 // 文件操作
 // ========================================
 const renameFile = (data: any) => {
-  const filename = data.label || data.raw?.filename;
-  if (filename) {
-    let names = filename.split('.');
-    renameDocName.value = names[0];
-    renameDocType.value = names.length >= 2 ? names[names.length - 1] : '';
-  }
-  renameDocId.value = data.id;
-  showRenameDialog.value = true;
+  const fn = data.label || data.raw?.filename;
+  if (fn) { let ns = fn.split('.'); renameDocName.value = ns[0]; renameDocType.value = ns.length >= 2 ? ns[ns.length - 1] : ''; }
+  renameDocId.value = data.id; showRenameDialog.value = true;
 };
 
 const saveDocName = async () => {
   if (!renameDocName.value.trim()) { ElMessage.error("请输入文件名"); return; }
-  let param = new FormData();
-  param.append('fileId', renameDocId.value + '');
-  param.append('fileName', renameDocName.value + (renameDocType.value ? '.' + renameDocType.value : ''));
-  param.append('folderId', '0');
-  try {
-    await withLoading(editFile)(param);
-    ElMessage.success("修改成功");
-    showRenameDialog.value = false;
-    await refreshCurrentFolder();
-  } catch { ElMessage.error("修改失败"); }
+  let p = new FormData(); p.append('fileId', renameDocId.value + ''); p.append('fileName', renameDocName.value + (renameDocType.value ? '.' + renameDocType.value : '')); p.append('folderId', '0');
+  try { await withLoading(editFile)(p); ElMessage.success("修改成功"); showRenameDialog.value = false; await refreshFolders(); } catch { ElMessage.error("修改失败"); }
 };
 
 const downLoadDoc = async (data: any) => {
-  try {
-    const response = await downloadFile({ fileId: data.id });
-    const url = URL.createObjectURL(new Blob([response]));
-    const link = document.createElement('a');
-    link.href = url;
-    link.setAttribute('download', data.label || data.raw?.filename);
-    document.body.appendChild(link);
-    link.click();
-    document.body.removeChild(link);
-  } catch (error: any) { ElMessage.error(error?.message || '下载失败'); }
+  try { const resp = await downloadFile({ fileId: data.id }); const url = URL.createObjectURL(new Blob([resp])); const a = document.createElement('a'); a.href = url; a.setAttribute('download', data.label || data.raw?.filename); document.body.appendChild(a); a.click(); document.body.removeChild(a); } catch (e: any) { ElMessage.error(e?.message || '下载失败'); }
 };
 
-const delFile = (data: any) => {
-  ElMessageBox.confirm("确认删除文档吗？", "提示", {
-    confirmButtonText: "确定", cancelButtonText: "取消", type: "warning",
-  }).then(async () => {
-    try {
-      let res = await withLoading(delFiles)({ fileList: [data.id], folderList: [] });
-      if (res?.code === 200) {
-        ElMessage.success("删除成功");
-        if (selectedFile.value?.fileId === data.id) { selectedFile.value = null; docHtml.value = ''; }
-        await refreshCurrentFolder();
-      } else ElMessage.error("删除失败");
-    } catch { ElMessage.error("删除失败"); }
+const delFileItem = (data: any) => {
+  ElMessageBox.confirm("确认删除文档吗？", "提示", { confirmButtonText: "确定", cancelButtonText: "取消", type: "warning" }).then(async () => {
+    try { let res = await withLoading(delFiles)({ fileList: [data.id], folderList: [] }); if (res?.code === 200) { ElMessage.success("删除成功"); if (selectedFile.value?.fileId === data.id) { selectedFile.value = null; docHtml.value = ''; } await refreshFolders(); } else ElMessage.error("删除失败"); } catch { ElMessage.error("删除失败"); }
   }).catch(() => {});
 };
 
-const refreshCurrentFolder = async () => {
-  // 重新加载所有已展开的文件夹
-  for (let folder of treeData.value) {
-    if (folder.loaded) {
-      folder.loaded = false;
-      await loadFolderFiles(folder);
-    }
-  }
+const refreshFolders = async () => {
+  for (let f of treeData.value) if (f.loaded) { f.loaded = false; await loadFolderFiles(f); }
 };
 
 // ========================================
 // 上传文件
 // ========================================
-const uploadToFolder = async (data: any) => {
-  uploadFolderId.value = data.id;
-  await getUploadedSize();
-  showUploadDialog.value = true;
-  if (uploadFinishFlag.value) uploadingFileList.value = [];
-};
-
-const getUploadedSize = async () => {
-  try {
-    let res = await getSize();
-    if (res.code === 200) totalFileSize.value = res.data;
-  } catch {}
-};
+const uploadToFolder = async (data: any) => { uploadFolderId.value = data.id; try { let r = await getSize(); if (r.code === 200) totalFileSize.value = r.data; } catch {} showUploadDialog.value = true; if (uploadFinishFlag.value) uploadingFileList.value = []; };
 
 const handleFileChange = async (file: UploadFile) => {
-  const fileExtension = file.name.split('.').pop()?.toUpperCase();
-  if (!allowFileTypes.includes(fileExtension as string)) {
-    ElMessage.warning(file.name + '文件格式不匹配');
-    return;
-  }
-  if (file.size && file.size > FILE_MAX_SIZE) {
-    ElMessage.warning(file.name + '文件大小已超过10M');
-    return;
-  }
+  const ext = file.name.split('.').pop()?.toUpperCase();
+  if (!allowFileTypes.includes(ext as string)) { ElMessage.warning(file.name + '文件格式不匹配'); return; }
+  if (file.size && file.size > FILE_MAX_SIZE) { ElMessage.warning(file.name + '文件大小已超过10M'); return; }
   totalFileSize.value += file.size || 0;
-  if (totalFileSize.value > TOTAL_FILE_MAX_SIZE) {
-    totalFileSize.value -= file.size || 0;
-    ElMessage.warning('个人素材总量不能超过50M');
-    return;
-  }
+  if (totalFileSize.value > TOTAL_FILE_MAX_SIZE) { totalFileSize.value -= file.size || 0; ElMessage.warning('个人素材总量不能超过50M'); return; }
   uploadingFileList.value.push(file as CusUploadFile);
 };
 
-watch(uploadingFileList, newVal => {
-  if (!isUploading.value) {
-    for (let i = 0; i < newVal.length; i++) {
-      if (newVal[i].status === 'ready') {
-        isUploading.value = true;
-        newVal[i].status = 'uploading';
-        startUpload();
-        break;
-      }
-    }
-  }
+watch(uploadingFileList, nv => {
+  if (!isUploading.value) for (let i = 0; i < nv.length; i++) if (nv[i].status === 'ready') { isUploading.value = true; nv[i].status = 'uploading'; uploadNext(); break; }
 }, { immediate: true, deep: true });
 
-const handleRemove = (file: UploadFile) => {
-  uploadingFileList.value = uploadingFileList.value.filter(item => item.uid !== file.uid);
-};
+const handleRemove = (file: UploadFile) => { uploadingFileList.value = uploadingFileList.value.filter(i => i.uid !== file.uid); };
 
-const startUpload = async () => { await uploadNextFile(); };
-
-const uploadNextFile = async () => {
-  uploadFinishFlag.value = true;
-  for (let i = 0; i < uploadingFileList.value.length; i++) {
-    if (uploadingFileList.value[i].status !== 'success' && uploadingFileList.value[i].status !== 'fail') {
-      uploadFinishFlag.value = false;
-    }
-  }
+const uploadNext = async () => {
+  uploadFinishFlag.value = uploadingFileList.value.every(f => f.status === 'success' || f.status === 'fail');
   if (uploadFinishFlag.value) { isUploading.value = false; return; }
-
-  const file = uploadingFileList.value[currentIndex.value];
-  file.status = 'uploading';
-  const formData = new FormData();
-  formData.append('files', file.raw as Blob);
-  formData.append('folderId', '0');
-  formData.append('knowledgeBaseId', uploadFolderId.value + '');
-
-  try {
-    let res = await uploadFile(formData);
-    if (res.code && res.code != 200) {
-      file.status = 'fail';
-      (file as CusUploadFile).message = res.msg;
-    } else {
-      file.status = 'success';
-    }
-  } catch (error: any) {
-    file.status = 'fail';
-    (file as CusUploadFile).message = error?.message || '未知错误';
-  } finally {
-    currentIndex.value++;
-    await uploadNextFile();
-  }
+  const file = uploadingFileList.value[currentIndex.value]; file.status = 'uploading';
+  const fd = new FormData(); fd.append('files', file.raw as Blob); fd.append('folderId', '0'); fd.append('knowledgeBaseId', uploadFolderId.value + '');
+  try { let r = await uploadFile(fd); if (r.code && r.code != 200) { file.status = 'fail'; (file as CusUploadFile).message = r.msg; } else file.status = 'success'; }
+  catch (e: any) { file.status = 'fail'; (file as CusUploadFile).message = e?.message || '未知错误'; }
+  finally { currentIndex.value++; await uploadNext(); }
 };
 
-const closeUpload = () => {
-  showUploadDialog.value = false;
-  currentIndex.value = 0;
-  refreshCurrentFolder();
-};
-
-// ========================================
-// 工具函数
-// ========================================
-const getViewportOffsetByEvent = (evt: MouseEvent) => {
-  return { left: evt.clientX, top: evt.clientY };
-};
+const closeUpload = () => { showUploadDialog.value = false; currentIndex.value = 0; refreshFolders(); };
 
 // ========================================
 // 生命周期
 // ========================================
 onMounted(async () => {
   await loadTreeData();
-  // 自动展开所有文件夹的文件
-  for (let folder of treeData.value) {
-    await loadFolderFiles(folder);
-  }
-
-  document.addEventListener('mousedown', (event: MouseEvent) => {
-    let execlute = document.getElementById('shortMenuDom');
-    if (execlute && execlute.contains(event.target as Node)) { /* noop */ }
-    else disShowShortMenu();
+  for (let f of treeData.value) await loadFolderFiles(f);
+  document.addEventListener('mousedown', (e: MouseEvent) => {
+    let el = document.getElementById('shortMenuDom');
+    if (!el?.contains(e.target as Node)) disShowShortMenu();
   });
 });
 </script>
@@ -874,126 +662,103 @@ onMounted(async () => {
   height: 100%;
   width: 100%;
   overflow: hidden;
+  padding: 10px;
+  gap: 0;
+  box-sizing: border-box;
+}
+
+.panel-card {
+  height: 100%;
+  background: #fff;
+  border-radius: 12px;
+  box-shadow: 0 0 8px 1px rgba(180, 189, 221, 0.3);
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+}
+
+// ========== 左栏折叠/展开按钮 ==========
+.expand-btn {
+  width: 20px;
+  height: 60px;
+  background: #fff;
+  border-radius: 0 8px 8px 0;
+  box-shadow: 2px 0 6px rgba(180, 189, 221, 0.3);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  cursor: pointer;
+  color: #004EA0;
+  font-size: 14px;
+  font-weight: bold;
+  align-self: center;
+  &:hover { background: #F0F4FF; }
+}
+
+// ========== 分隔条 ==========
+.splitter {
+  width: 6px;
+  cursor: col-resize;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-shrink: 0;
+  &:hover { background: rgba(0, 78, 160, 0.1); border-radius: 3px; }
+  &::after { content: ''; width: 2px; height: 30px; background: #D5DDFF; border-radius: 1px; }
 }
 
 // ========== 左栏 ==========
 .left-panel {
-  width: 280px;
-  min-width: 280px;
+  min-width: 200px;
   height: 100%;
-  background: #fff;
-  border-right: 1px solid #E6EDFF;
-  display: flex;
-  flex-direction: column;
+  flex-shrink: 0;
+  transition: width 0.2s;
 
   .left-header {
     display: flex;
     justify-content: space-between;
     align-items: center;
-    padding: 16px 16px 8px 16px;
-    .left-title {
-      font-weight: bold;
-      font-size: 16px;
-      color: #000;
-    }
-    .action-icon {
-      width: 18px;
-      height: 18px;
-      cursor: pointer;
-      opacity: 0.7;
-      &:hover { opacity: 1; }
+    padding: 14px 12px 6px 16px;
+    .left-title { font-weight: bold; font-size: 15px; color: #000; }
+    .left-actions {
+      display: flex; align-items: center; gap: 8px;
+      .action-icon { width: 18px; height: 18px; cursor: pointer; opacity: 0.7; &:hover { opacity: 1; } }
+      .collapse-btn { font-size: 14px; cursor: pointer; color: #999; padding: 2px 4px; border-radius: 4px; &:hover { background: #F0F4FF; color: #004EA0; } }
     }
   }
 
-  .left-search {
-    padding: 0 12px 8px 12px;
-  }
+  .left-search { padding: 4px 12px 8px 12px; }
 
   .left-tree {
     flex: 1;
     overflow-y: auto;
     padding: 0 4px;
-
     &::-webkit-scrollbar { width: 4px; }
     &::-webkit-scrollbar-thumb { background: #D5DDFF; border-radius: 2px; }
 
-    :deep(.el-tree-node__content) {
-      height: auto;
-      padding: 2px 0;
-    }
+    :deep(.el-tree-node__content) { height: auto; padding: 1px 0; }
+    :deep(.el-checkbox) { margin-right: 4px; }
 
     .tree-node {
-      display: flex;
-      align-items: center;
-      justify-content: space-between;
-      width: 100%;
-      padding: 4px 8px;
-      border-radius: 6px;
-
-      &:hover {
-        background: #F0F4FF;
-        .tree-node-actions { opacity: 1; }
-      }
-
-      &.is-selected-file {
-        background: #E0EAFF;
-      }
-
+      display: flex; align-items: center; justify-content: space-between; width: 100%;
+      padding: 4px 6px; border-radius: 6px;
+      &:hover { background: #F0F4FF; .tree-node-actions { opacity: 1; } }
+      &.is-selected-file { background: #E0EAFF; }
       .tree-node-content {
-        display: flex;
-        align-items: center;
-        flex: 1;
-        min-width: 0;
-
-        .folder-icon {
-          width: 20px;
-          height: 18px;
-          margin-right: 6px;
-        }
-
-        .tree-file-icon {
-          font-size: 14px;
-          margin-right: 6px;
-        }
-
-        .tree-label {
-          font-size: 13px;
-          color: #333;
-          overflow: hidden;
-          text-overflow: ellipsis;
-          white-space: nowrap;
-          cursor: pointer;
-        }
-      }
-
-      .tree-node-actions {
-        opacity: 0;
-        margin-left: 4px;
-
-        .tree-operate-icon {
-          width: 12px;
-          cursor: pointer;
-          padding: 4px;
-        }
+        display: flex; align-items: center; flex: 1; min-width: 0;
+        .folder-icon { width: 18px; height: 16px; margin-right: 5px; }
+        .tree-file-icon { font-size: 13px; margin-right: 5px; }
+        .tree-label { font-size: 13px; color: #333; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; cursor: pointer; }
       }
+      .tree-node-actions { opacity: 0; margin-left: 4px; .tree-operate-icon { width: 10px; cursor: pointer; padding: 4px; } }
     }
   }
 
   .left-footer {
-    padding: 8px 12px;
-    border-top: 1px solid #E6EDFF;
-
+    padding: 8px 12px; border-top: 1px solid #E6EDFF;
     .batch-del-btn {
-      display: flex;
-      align-items: center;
-      justify-content: center;
-      height: 32px;
-      border: 1px solid #004EA0;
-      border-radius: 4px;
-      cursor: pointer;
-      color: #004EA0;
-      font-size: 13px;
-
+      display: flex; align-items: center; justify-content: center; height: 30px;
+      border: 1px solid #004EA0; border-radius: 4px; cursor: pointer; color: #004EA0; font-size: 13px;
       img { width: 14px; margin-right: 4px; }
       &:hover { background: #F0F4FF; }
     }
@@ -1004,117 +769,48 @@ onMounted(async () => {
 .center-panel {
   flex: 1;
   height: 100%;
+  min-width: 300px;
   overflow: hidden;
-  display: flex;
-  flex-direction: column;
 
   .center-placeholder {
-    flex: 1;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-
-    .placeholder-content {
-      text-align: center;
-      color: #999;
-      p { margin-top: 12px; font-size: 14px; }
-    }
+    flex: 1; display: flex; align-items: center; justify-content: center; height: 100%;
+    .placeholder-content { text-align: center; color: #999; p { margin-top: 12px; font-size: 14px; } }
   }
 
   .center-content {
-    flex: 1;
-    display: flex;
-    flex-direction: column;
-    overflow: hidden;
-
+    flex: 1; display: flex; flex-direction: column; height: 100%; overflow: hidden;
     .center-header {
-      padding: 12px 20px;
-      border-bottom: 1px solid #E6EDFF;
-      background: #fff;
-
-      .center-title {
-        font-weight: bold;
-        font-size: 16px;
-        color: #000;
-      }
+      padding: 12px 20px; border-bottom: 1px solid #E6EDFF;
+      .center-title { font-weight: bold; font-size: 15px; color: #000; }
     }
-
     .file-content {
-      flex: 1;
-      overflow: auto;
-      background: #FFFFFF;
-      margin: 10px;
-      box-shadow: 0px 0px 8px 1px rgba(180, 189, 221, 0.56);
-      border-radius: 12px;
-      position: relative;
-
+      flex: 1; overflow: auto; position: relative; padding: 0;
       .view-md {
-        padding: 24px;
-        position: relative;
-
-        :deep(p) {
-          font-size: 16px;
-          line-height: 1.8rem;
-          margin-block-start: 0;
-        }
-
+        padding: 20px;
+        :deep(p) { font-size: 15px; line-height: 1.8rem; margin-block-start: 0; }
         :deep(.highlight) { background: #D0EAC8; }
-
-        :deep(.note-flag) {
-          width: 23px; height: 28px; line-height: 28px;
-          display: inline-block; text-align: center;
-          font-weight: bold; font-size: 10px; margin-left: 8px; cursor: pointer;
-          background: url("@/assets/images/reading/note.png");
-          color: #004EA0;
-          background-size: contain !important;
-          background-repeat: no-repeat !important;
-          background-position: center bottom !important;
-        }
-
-        :deep(.note-flag:hover) {
-          color: #FAFBFF;
-          background: url("@/assets/images/reading/note_active.png");
-        }
-
-        :deep(.note-flag-active) {
-          color: #FAFBFF;
-          background: url("@/assets/images/reading/note_active.png");
-        }
-      }
-
-      .file-note {
-        max-width: 240px; height: 36px; line-height: 36px;
-        padding: 0 12px; position: absolute; display: none;
-        background: #004EA0;
-        box-shadow: 0px 0px 8px 1px rgba(180, 189, 221, 0.56);
-        border-radius: 8px; border: 1px solid #D5DDFF;
-        font-size: 14px; color: #FFFFFF;
-        overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
+        :deep(.note-flag) { width: 23px; height: 28px; line-height: 28px; display: inline-block; text-align: center; font-weight: bold; font-size: 10px; margin-left: 8px; cursor: pointer; background: url("@/assets/images/reading/note.png"); color: #004EA0; background-size: contain !important; background-repeat: no-repeat !important; background-position: center bottom !important; }
+        :deep(.note-flag:hover) { color: #FAFBFF; background: url("@/assets/images/reading/note_active.png"); }
+        :deep(.note-flag-active) { color: #FAFBFF; background: url("@/assets/images/reading/note_active.png"); }
       }
+      .file-note { max-width: 240px; height: 36px; line-height: 36px; padding: 0 12px; position: absolute; display: none; background: #004EA0; box-shadow: 0 0 8px 1px rgba(180,189,221,0.56); border-radius: 8px; border: 1px solid #D5DDFF; font-size: 14px; color: #fff; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
     }
   }
 }
 
 // ========== 右栏 ==========
 .right-panel {
-  width: 400px;
-  min-width: 400px;
-  height: calc(100% - 20px);
-  margin: 10px 10px 10px 0;
-  background: linear-gradient(180deg, rgba(178, 226, 255, 0.4) 0%, rgba(106, 148, 255, 0.4) 100%);
-  box-shadow: 0 0 8px 1px rgba(180, 189, 221, 0.56);
-  border-radius: 16px;
-  overflow: hidden;
+  min-width: 300px;
+  height: 100%;
+  flex-shrink: 0;
+
+  .right-card {
+    background: linear-gradient(180deg, rgba(178, 226, 255, 0.4) 0%, rgba(106, 148, 255, 0.4) 100%);
+  }
 
   .right-placeholder {
-    height: 100%;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-
-    .placeholder-content {
-      text-align: center;
-      color: #999;
+    height: 100%; display: flex; align-items: center; justify-content: center;
+    .placeholder-content { text-align: center; color: #999;
       .placeholder-title { margin-top: 12px; font-size: 16px; font-weight: bold; color: #666; }
       .placeholder-sub { margin-top: 4px; font-size: 13px; }
     }
@@ -1123,45 +819,24 @@ onMounted(async () => {
 
 // ========== 右键菜单 ==========
 .click-bar-button {
-  height: 36px; padding: 0 4px;
-  background: #FFFFFF;
-  box-shadow: 0px 0px 8px 1px rgba(180, 189, 221, 0.56);
-  border-radius: 8px; border: 1px solid #D5DDFF;
-  display: flex; justify-content: space-evenly; align-items: center;
-  position: fixed; z-index: 9999; font-size: 14px;
-
-  .menu-name { line-height: 36px; cursor: pointer; padding: 0 12px; }
-  .menu-name:hover { color: #004EA0; }
+  height: 36px; padding: 0 4px; background: #fff;
+  box-shadow: 0 0 8px 1px rgba(180,189,221,0.56); border-radius: 8px; border: 1px solid #D5DDFF;
+  display: flex; justify-content: space-evenly; align-items: center; position: fixed; z-index: 9999; font-size: 14px;
+  .menu-name { line-height: 36px; cursor: pointer; padding: 0 12px; &:hover { color: #004EA0; } }
   .vertical-line { height: 16px; width: 2px; background-color: #D5DDFF; }
 }
 
-// ========== 上传弹框 ==========
-.upload-demo {
-  width: 100%; text-align: center;
-  .el-upload__tip { text-align: center; margin-top: 12px; }
-}
-
+// ========== 弹框 ==========
+.upload-demo { width: 100%; text-align: center; .el-upload__tip { text-align: center; margin-top: 12px; } }
 .files-upload-result {
   max-height: 210px; overflow-y: auto; margin-top: 16px;
-  .result {
-    height: 30px; display: flex; justify-content: space-between; align-items: center;
-    .file-name {
-      width: 434px; font-size: 14px; color: #606771;
-      overflow: hidden; text-overflow: ellipsis; white-space: nowrap; padding-left: 10px;
-    }
-    .result-info {
-      display: flex; align-items: center;
+  .result { height: 30px; display: flex; justify-content: space-between; align-items: center;
+    .file-name { width: 434px; font-size: 14px; color: #606771; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; padding-left: 10px; }
+    .result-info { display: flex; align-items: center;
       .fail-msg { width: 192px; text-align: right; font-size: 12px; color: #BD0000; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-right: 8px; }
-      .loading { width: 38px; height: 38px; }
-      img { width: 14px; margin-right: 10px; }
-      .upload-remove { cursor: pointer; }
+      .loading { width: 38px; height: 38px; } img { width: 14px; margin-right: 10px; } .upload-remove { cursor: pointer; }
     }
   }
 }
-
-.dialog-tips {
-  font-size: 12px; color: #858A94; margin-top: 8px;
-  display: flex; align-items: center; justify-content: center;
-  img { width: 12px; height: 12px; margin-right: 3px; }
-}
+.dialog-tips { font-size: 12px; color: #858A94; margin-top: 8px; display: flex; align-items: center; justify-content: center; img { width: 12px; height: 12px; margin-right: 3px; } }
 </style>