diff --git a/src/App.jsx b/src/App.jsx
index 6f3a265..d38ee43 100644
--- a/src/App.jsx
+++ b/src/App.jsx
@@ -6,9 +6,13 @@ import ChartContainer from './components/ChartContainer';
 import { ComparisonControls } from './components/ComparisonControls';
 import { Header } from './components/Header';
 import { FileConfigModal } from './components/FileConfigModal';
+import CollapsibleSection from './components/CollapsibleSection';
+import { ChevronLeft, ChevronRight } from 'lucide-react';
 
 function App() {
   const [uploadedFiles, setUploadedFiles] = useState([]);
+
+  const [sidebarVisible, setSidebarVisible] = useState(true);
   
   // 全局解析配置状态
   const [globalParsingConfig, setGlobalParsingConfig] = useState({
@@ -231,17 +235,25 @@ function App() {
       )}
 
       <div className="w-full px-3 py-3">
-        
-        <main 
+
+        <main
           id="main-content"
-          className="grid grid-cols-1 xl:grid-cols-5 gap-3" 
+          className="grid grid-cols-1 xl:grid-cols-5 gap-3 h-[calc(100vh-2rem)]"
           role="main"
         >
-          <aside 
-            className="xl:col-span-1 space-y-3"
-            role="complementary"
-            aria-label="控制面板"
-          >
+          {sidebarVisible && (
+            <aside
+              className="xl:col-span-1 space-y-3 overflow-y-auto pr-2"
+              role="complementary"
+              aria-label="控制面板"
+            >
+              <button
+                onClick={() => setSidebarVisible(false)}
+                className="absolute -right-3 top-3 bg-white border rounded-r px-1 py-0.5 shadow"
+                aria-label="隐藏侧边栏"
+              >
+                <ChevronLeft size={14} />
+              </button>
             {/* 标题信息 */}
             <div className="bg-white rounded-lg shadow-md p-3">
               <div className="flex items-center gap-2 mb-2">
@@ -282,38 +294,43 @@ function App() {
               </div>
             </div>
             
-            <FileUpload onFilesUploaded={handleFilesUploaded} />
-            
-            <RegexControls
-              globalParsingConfig={globalParsingConfig}
-              onGlobalParsingConfigChange={handleGlobalParsingConfigChange}
-              uploadedFiles={uploadedFiles}
-              xRange={xRange}
-              onXRangeChange={setXRange}
-              maxStep={maxStep}
-            />
-            
-            <FileList
-              files={uploadedFiles}
-              onFileRemove={handleFileRemove}
-              onFileToggle={handleFileToggle}
-              onFileConfig={handleFileConfig}
-            />
+            <CollapsibleSection id="file-list" title="📋 已加载文件" defaultCollapsed={false}>
+              <FileList
+                files={uploadedFiles}
+                onFileRemove={handleFileRemove}
+                onFileToggle={handleFileToggle}
+                onFileConfig={handleFileConfig}
+                showTitle={false}
+              />
+            </CollapsibleSection>
 
-            {uploadedFiles.filter(file => file.enabled).length === 2 && (
-              <ComparisonControls
-                compareMode={compareMode}
-                onCompareModeChange={setCompareMode}
+            <CollapsibleSection id="file-upload" title="📁 文件上传" defaultCollapsed={true}>
+              <FileUpload onFilesUploaded={handleFilesUploaded} showTitle={false} />
+            </CollapsibleSection>
+
+            <CollapsibleSection id="regex-controls" title="⚙️ 数据解析配置" defaultCollapsed={true}>
+              <RegexControls
+                globalParsingConfig={globalParsingConfig}
+                onGlobalParsingConfigChange={handleGlobalParsingConfigChange}
+                uploadedFiles={uploadedFiles}
+                xRange={xRange}
+                onXRangeChange={setXRange}
+                maxStep={maxStep}
+                showTitle={false}
               />
+            </CollapsibleSection>
+
+            {uploadedFiles.filter(file => file.enabled).length === 2 && (
+              <CollapsibleSection id="comparison-controls" title="⚖️ 对比模式" defaultCollapsed={true}>
+                <ComparisonControls
+                  compareMode={compareMode}
+                  onCompareModeChange={setCompareMode}
+                  showTitle={false}
+                />
+              </CollapsibleSection>
             )}
 
-            <section className="bg-white rounded-lg shadow-md p-3" aria-labelledby="display-options-heading">
-              <h3 
-                id="display-options-heading"
-                className="text-base font-semibold text-gray-800 mb-2"
-              >
-                🎛️ 显示选项
-              </h3>
+            <CollapsibleSection id="display-options-heading" title="🎛️ 显示选项" defaultCollapsed={true}>
               <div className="space-y-3">
                 <div>
                   <h4 className="text-xs font-medium text-gray-700 mb-2">📊 图表显示</h4>
@@ -375,11 +392,11 @@ function App() {
                   </div>
                 </div>
               </div>
-            </section>
-          </aside>
+            </CollapsibleSection>
+          </aside>)}
 
-          <section 
-            className="xl:col-span-4"
+          <section
+            className={`${sidebarVisible ? 'xl:col-span-4' : 'xl:col-span-5'} overflow-y-auto`}
             role="region"
             aria-label="图表显示区域"
           >
@@ -395,6 +412,15 @@ function App() {
             />
           </section>
         </main>
+        {!sidebarVisible && (
+          <button
+            onClick={() => setSidebarVisible(true)}
+            className="fixed left-0 top-1/2 -translate-y-1/2 bg-white border rounded-r px-1 py-0.5 shadow z-10"
+            aria-label="显示侧边栏"
+          >
+            <ChevronRight size={14} />
+          </button>
+        )}
       </div>
       
       <FileConfigModal
diff --git a/src/components/CollapsibleSection.jsx b/src/components/CollapsibleSection.jsx
new file mode 100644
index 0000000..ab01653
--- /dev/null
+++ b/src/components/CollapsibleSection.jsx
@@ -0,0 +1,27 @@
+import React, { useState } from 'react';
+import { ChevronDown, ChevronRight } from 'lucide-react';
+
+export default function CollapsibleSection({ id, title, defaultCollapsed = false, children }) {
+  const [collapsed, setCollapsed] = useState(defaultCollapsed);
+
+  return (
+    <section className="bg-white rounded-lg shadow-md" aria-labelledby={id}>
+      <header className="flex items-center justify-between p-3">
+        <h3 id={id} className="text-base font-semibold text-gray-800">
+          {title}
+        </h3>
+        <button
+          onClick={() => setCollapsed(!collapsed)}
+          className="text-gray-600 hover:text-gray-800 focus:outline-none"
+          aria-expanded={!collapsed}
+          aria-controls={`${id}-content`}
+        >
+          {collapsed ? <ChevronRight size={16} /> : <ChevronDown size={16} />}
+        </button>
+      </header>
+      <div id={`${id}-content`} className={`${collapsed ? 'hidden' : 'p-3 border-t'}`}>
+        {children}
+      </div>
+    </section>
+  );
+}
diff --git a/src/components/ComparisonControls.jsx b/src/components/ComparisonControls.jsx
index e2661ee..d74bad6 100644
--- a/src/components/ComparisonControls.jsx
+++ b/src/components/ComparisonControls.jsx
@@ -1,9 +1,10 @@
 import React from 'react';
 import { BarChart2 } from 'lucide-react';
 
-export function ComparisonControls({ 
-  compareMode, 
-  onCompareModeChange
+export function ComparisonControls({
+  compareMode,
+  onCompareModeChange,
+  showTitle = true
 }) {
   const modes = [
     { value: 'normal', label: '📊 Normal', description: '原始差值' },
@@ -13,19 +14,21 @@ export function ComparisonControls({
 
   return (
     <section className="bg-white rounded-lg shadow-md p-3" aria-labelledby="comparison-controls-heading">
-      <div className="flex items-center gap-2 mb-2">
-        <BarChart2 
-          size={16} 
-          className="text-gray-600" 
-          aria-hidden="true"
-        />
-        <h3 
-          id="comparison-controls-heading"
-          className="text-base font-semibold text-gray-800"
-        >
-          ⚖️ 对比模式
-        </h3>
-      </div>
+      {showTitle && (
+        <div className="flex items-center gap-2 mb-2">
+          <BarChart2
+            size={16}
+            className="text-gray-600"
+            aria-hidden="true"
+          />
+          <h3
+            id="comparison-controls-heading"
+            className="text-base font-semibold text-gray-800"
+          >
+            ⚖️ 对比模式
+          </h3>
+        </div>
+      )}
       
       <fieldset className="space-y-2">
         <legend className="sr-only">选择数据对比模式</legend>
diff --git a/src/components/FileList.jsx b/src/components/FileList.jsx
index 37fb183..6399778 100644
--- a/src/components/FileList.jsx
+++ b/src/components/FileList.jsx
@@ -1,16 +1,18 @@
 import React from 'react';
 import { FileText, X, Settings } from 'lucide-react';
 
-export function FileList({ files, onFileRemove, onFileToggle, onFileConfig }) {
+export function FileList({ files, onFileRemove, onFileToggle, onFileConfig, showTitle = true }) {
   if (files.length === 0) {
     return (
       <section className="bg-white rounded-lg shadow-md p-3" aria-labelledby="file-list-heading">
-        <h3 
-          id="file-list-heading"
-          className="text-base font-semibold text-gray-800 mb-2"
-        >
-          📋 已加载文件
-        </h3>
+        {showTitle && (
+          <h3
+            id="file-list-heading"
+            className="text-base font-semibold text-gray-800 mb-2"
+          >
+            📋 已加载文件
+          </h3>
+        )}
         <p className="text-gray-500 text-center py-4 text-sm" role="status">
           📂 暂无文件
         </p>
@@ -20,12 +22,14 @@ export function FileList({ files, onFileRemove, onFileToggle, onFileConfig }) {
 
   return (
     <section className="bg-white rounded-lg shadow-md p-3" aria-labelledby="file-list-heading">
-      <h3 
-        id="file-list-heading"
-        className="text-base font-semibold text-gray-800 mb-2"
-      >
-        📋 已加载文件 ({files.length})
-      </h3>
+      {showTitle && (
+        <h3
+          id="file-list-heading"
+          className="text-base font-semibold text-gray-800 mb-2"
+        >
+          📋 已加载文件 ({files.length})
+        </h3>
+      )}
       <ul className="space-y-2" role="list" aria-label={`已加载 ${files.length} 个文件`}>
         {files.map((file, index) => (
           <li
diff --git a/src/components/FileUpload.jsx b/src/components/FileUpload.jsx
index e437d3d..94124ca 100644
--- a/src/components/FileUpload.jsx
+++ b/src/components/FileUpload.jsx
@@ -1,7 +1,7 @@
 import React, { useCallback, useState } from 'react';
 import { Upload, FileText } from 'lucide-react';
 
-export function FileUpload({ onFilesUploaded }) {
+export function FileUpload({ onFilesUploaded, showTitle = true }) {
   const [isDragOver, setIsDragOver] = useState(false);
 
   const processFiles = useCallback((files) => {
@@ -64,12 +64,14 @@ export function FileUpload({ onFilesUploaded }) {
 
   return (
     <div className="bg-white rounded-lg shadow-md p-3">
-      <h3 
-        id="file-upload-heading"
-        className="text-base font-semibold text-gray-800 mb-2"
-      >
-        📁 文件上传
-      </h3>
+      {showTitle && (
+        <h3
+          id="file-upload-heading"
+          className="text-base font-semibold text-gray-800 mb-2"
+        >
+          📁 文件上传
+        </h3>
+      )}
       <div
         className={`drag-area border-2 border-dashed rounded-lg p-4 text-center cursor-pointer ${
           isDragOver ? 'border-blue-500 bg-blue-50' : 'border-gray-300 hover:border-gray-400'
diff --git a/src/components/RegexControls.jsx b/src/components/RegexControls.jsx
index 971cce9..72841b0 100644
--- a/src/components/RegexControls.jsx
+++ b/src/components/RegexControls.jsx
@@ -202,7 +202,8 @@ export function RegexControls({
   uploadedFiles = [],
   xRange,
   onXRangeChange,
-  maxStep
+  maxStep,
+  showTitle = true
 }) {
   const [showPreview, setShowPreview] = useState(false);
   const [previewResults, setPreviewResults] = useState({});
@@ -413,20 +414,21 @@ export function RegexControls({
 
   return (
     <section className="bg-white rounded-lg shadow-md p-3" aria-labelledby="regex-controls-heading">
-      <div className="flex items-center justify-between mb-3">
-        <div className="flex items-center gap-2">
-          <Settings 
-            size={16} 
-            className="text-gray-600" 
-            aria-hidden="true"
-          />
-          <h3 
-            id="regex-controls-heading"
-            className="text-base font-semibold text-gray-800"
-          >
-            数据解析配置
-          </h3>
-        </div>
+      {showTitle && (
+        <div className="flex items-center justify-between mb-3">
+          <div className="flex items-center gap-2">
+            <Settings
+              size={16}
+              className="text-gray-600"
+              aria-hidden="true"
+            />
+            <h3
+              id="regex-controls-heading"
+              className="text-base font-semibold text-gray-800"
+            >
+              数据解析配置
+            </h3>
+          </div>
         
         <div className="flex items-center gap-1">
           {uploadedFiles.length > 0 && (
@@ -446,7 +448,8 @@ export function RegexControls({
             <Eye size={14} />
           </button>
         </div>
-      </div>
+        </div>
+      )}
       
       <div className="space-y-4">
         {globalParsingConfig.metrics.map((cfg, idx) => (