diff --git a/__pycache__/auth.cpython-310.pyc b/__pycache__/auth.cpython-310.pyc
new file mode 100644
index 0000000..e93c07c
Binary files /dev/null and b/__pycache__/auth.cpython-310.pyc differ
diff --git a/__pycache__/config.cpython-310.pyc b/__pycache__/config.cpython-310.pyc
new file mode 100644
index 0000000..db7dcf9
Binary files /dev/null and b/__pycache__/config.cpython-310.pyc differ
diff --git a/__pycache__/llm.cpython-310.pyc b/__pycache__/llm.cpython-310.pyc
new file mode 100644
index 0000000..0ac5831
Binary files /dev/null and b/__pycache__/llm.cpython-310.pyc differ
diff --git a/__pycache__/utils.cpython-310.pyc b/__pycache__/utils.cpython-310.pyc
new file mode 100644
index 0000000..1a4d97e
Binary files /dev/null and b/__pycache__/utils.cpython-310.pyc differ
diff --git a/logs/app.log b/logs/app.log
new file mode 100644
index 0000000..d510c50
--- /dev/null
+++ b/logs/app.log
@@ -0,0 +1,16 @@
+==================================================
+ParamHub - 参数百科 v1.8.0
+==================================================
+模块化重构 + 后台登录认证
+访问地址: http://localhost:16041
+后台管理: http://localhost:16041/admin
+默认密码: admin123 (可在 config.json 中修改)
+==================================================
+ * Serving Flask app 'app'
+ * Debug mode: off
+WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
+ * Running on all addresses (0.0.0.0)
+ * Running on http://127.0.0.1:16041
+ * Running on http://192.168.0.101:16041
+Press CTRL+C to quit
+127.0.0.1 - - [10/Jul/2026 23:59:48] "GET /api/categories/export HTTP/1.1" 200 -
diff --git a/modules/__pycache__/__init__.cpython-310.pyc b/modules/__pycache__/__init__.cpython-310.pyc
new file mode 100644
index 0000000..0e25465
Binary files /dev/null and b/modules/__pycache__/__init__.cpython-310.pyc differ
diff --git a/modules/routes/__pycache__/__init__.cpython-310.pyc b/modules/routes/__pycache__/__init__.cpython-310.pyc
new file mode 100644
index 0000000..c55b598
Binary files /dev/null and b/modules/routes/__pycache__/__init__.cpython-310.pyc differ
diff --git a/modules/routes/__pycache__/api_categories.cpython-310.pyc b/modules/routes/__pycache__/api_categories.cpython-310.pyc
new file mode 100644
index 0000000..32fc2d1
Binary files /dev/null and b/modules/routes/__pycache__/api_categories.cpython-310.pyc differ
diff --git a/modules/routes/__pycache__/api_config.cpython-310.pyc b/modules/routes/__pycache__/api_config.cpython-310.pyc
new file mode 100644
index 0000000..edddff2
Binary files /dev/null and b/modules/routes/__pycache__/api_config.cpython-310.pyc differ
diff --git a/modules/routes/__pycache__/api_cpus.cpython-310.pyc b/modules/routes/__pycache__/api_cpus.cpython-310.pyc
new file mode 100644
index 0000000..0fdea06
Binary files /dev/null and b/modules/routes/__pycache__/api_cpus.cpython-310.pyc differ
diff --git a/modules/routes/__pycache__/api_gpus.cpython-310.pyc b/modules/routes/__pycache__/api_gpus.cpython-310.pyc
new file mode 100644
index 0000000..511d132
Binary files /dev/null and b/modules/routes/__pycache__/api_gpus.cpython-310.pyc differ
diff --git a/modules/routes/__pycache__/api_items.cpython-310.pyc b/modules/routes/__pycache__/api_items.cpython-310.pyc
new file mode 100644
index 0000000..24097df
Binary files /dev/null and b/modules/routes/__pycache__/api_items.cpython-310.pyc differ
diff --git a/modules/routes/__pycache__/api_knowledge.cpython-310.pyc b/modules/routes/__pycache__/api_knowledge.cpython-310.pyc
new file mode 100644
index 0000000..1d885e3
Binary files /dev/null and b/modules/routes/__pycache__/api_knowledge.cpython-310.pyc differ
diff --git a/modules/routes/__pycache__/api_models.cpython-310.pyc b/modules/routes/__pycache__/api_models.cpython-310.pyc
new file mode 100644
index 0000000..9a3af04
Binary files /dev/null and b/modules/routes/__pycache__/api_models.cpython-310.pyc differ
diff --git a/modules/routes/__pycache__/api_pin.cpython-310.pyc b/modules/routes/__pycache__/api_pin.cpython-310.pyc
new file mode 100644
index 0000000..2548ab4
Binary files /dev/null and b/modules/routes/__pycache__/api_pin.cpython-310.pyc differ
diff --git a/modules/routes/__pycache__/api_search.cpython-310.pyc b/modules/routes/__pycache__/api_search.cpython-310.pyc
new file mode 100644
index 0000000..fb3af0a
Binary files /dev/null and b/modules/routes/__pycache__/api_search.cpython-310.pyc differ
diff --git a/modules/routes/__pycache__/api_smart.cpython-310.pyc b/modules/routes/__pycache__/api_smart.cpython-310.pyc
new file mode 100644
index 0000000..7bc055e
Binary files /dev/null and b/modules/routes/__pycache__/api_smart.cpython-310.pyc differ
diff --git a/modules/routes/__pycache__/api_upload.cpython-310.pyc b/modules/routes/__pycache__/api_upload.cpython-310.pyc
new file mode 100644
index 0000000..52012eb
Binary files /dev/null and b/modules/routes/__pycache__/api_upload.cpython-310.pyc differ
diff --git a/modules/routes/__pycache__/pages.cpython-310.pyc b/modules/routes/__pycache__/pages.cpython-310.pyc
new file mode 100644
index 0000000..e4f725d
Binary files /dev/null and b/modules/routes/__pycache__/pages.cpython-310.pyc differ
diff --git a/modules/routes/api_categories.py b/modules/routes/api_categories.py
index 3a7ec16..9e83f1e 100644
--- a/modules/routes/api_categories.py
+++ b/modules/routes/api_categories.py
@@ -2,10 +2,11 @@
 分类管理 API
 """
 import uuid
+import json
 from datetime import datetime
-from flask import Blueprint, request, jsonify
-from config import CATEGORIES_FILE
-from utils import load_data, save_data
+from flask import Blueprint, request, jsonify, Response
+from config import CATEGORIES_FILE, DATA_DIR
+from utils import load_data, save_data, load_config
 
 cat_bp = Blueprint('api_categories', __name__)
 
@@ -70,3 +71,271 @@ def api_toggle_category_visible(category_id):
     category['visible'] = not category.get('visible', True)
     save_data(CATEGORIES_FILE, categories)
     return jsonify({'success': True, 'visible': category['visible']})
+
+
+# ─── 导出分类相关数据 ───────────────────────────────────────────────────────
+
+@cat_bp.route('/api/categories/export', methods=['GET'])
+def api_export_categories():
+    """导出所有分类及其相关数据（子类别、参数字段、关联数据项）"""
+    try:
+        # 获取所有分类
+        categories = load_data(CATEGORIES_FILE)
+        
+        # 获取各类别下的数据
+        export_data = {
+            'categories': categories,
+            'export_time': datetime.now().strftime('%Y-%m-%d %H:%M:%S'),
+            'version': '1.0'
+        }
+        
+        # 加载各类别数据文件
+        # 内置分类：AI模型、GPU、CPU
+        models_file = DATA_DIR / 'models.json'
+        gpus_file = DATA_DIR / 'gpus.json'
+        cpus_file = DATA_DIR / 'cpus.json'
+        
+        if models_file.exists():
+            export_data['models'] = load_data(models_file)
+        if gpus_file.exists():
+            export_data['gpus'] = load_data(gpus_file)
+        if cpus_file.exists():
+            export_data['cpus'] = load_data(cpus_file)
+        
+        # 动态分类数据（每个自定义分类有独立的数据文件）
+        for cat in categories:
+            cat_id = cat['id']
+            # 排除内置分类
+            if cat_id in ['ai-models', 'gpus', 'cpus']:
+                continue
+            # 查找该分类的数据文件
+            cat_data_file = DATA_DIR / f'{cat_id}.json'
+            if cat_data_file.exists():
+                export_data[cat_id] = load_data(cat_data_file)
+        
+        # 导出为 JSON 文件
+        json_str = json.dumps(export_data, ensure_ascii=False, indent=2)
+        
+        response = Response(
+            json_str,
+            mimetype='application/json',
+            headers={
+                'Content-Disposition': f'attachment; filename=param-hub-categories-export-{datetime.now().strftime("%Y%m%d%H%M%S")}.json'
+            }
+        )
+        return response
+    except Exception as e:
+        return jsonify({'error': str(e)}), 500
+
+
+@cat_bp.route('/api/categories/export/<category_id>', methods=['GET'])
+def api_export_single_category(category_id):
+    """导出单个分类及其相关数据"""
+    try:
+        categories = load_data(CATEGORIES_FILE)
+        category = next((c for c in categories if c['id'] == category_id), None)
+        if not category:
+            return jsonify({'error': 'Category not found'}), 404
+        
+        export_data = {
+            'category': category,
+            'export_time': datetime.now().strftime('%Y-%m-%d %H:%M:%S'),
+            'version': '1.0'
+        }
+        
+        # 加载该分类的数据
+        if category_id == 'ai-models':
+            models_file = DATA_DIR / 'models.json'
+            if models_file.exists():
+                export_data['items'] = load_data(models_file)
+        elif category_id == 'gpus':
+            gpus_file = DATA_DIR / 'gpus.json'
+            if gpus_file.exists():
+                export_data['items'] = load_data(gpus_file)
+        elif category_id == 'cpus':
+            cpus_file = DATA_DIR / 'cpus.json'
+            if cpus_file.exists():
+                export_data['items'] = load_data(cpus_file)
+        else:
+            # 动态分类
+            cat_data_file = DATA_DIR / f'{category_id}.json'
+            if cat_data_file.exists():
+                export_data['items'] = load_data(cat_data_file)
+        
+        json_str = json.dumps(export_data, ensure_ascii=False, indent=2)
+        
+        response = Response(
+            json_str,
+            mimetype='application/json',
+            headers={
+                'Content-Disposition': f'attachment; filename={category_id}-export-{datetime.now().strftime("%Y%m%d%H%M%S")}.json'
+            }
+        )
+        return response
+    except Exception as e:
+        return jsonify({'error': str(e)}), 500
+
+
+# ─── 导入分类相关数据 ───────────────────────────────────────────────────────
+
+@cat_bp.route('/api/categories/import', methods=['POST'])
+def api_import_categories():
+    """导入分类及其相关数据"""
+    try:
+        import_data = request.get_json()
+        
+        if not import_data:
+            return jsonify({'error': '无导入数据'}), 400
+        
+        # 验证数据结构
+        if 'categories' not in import_data:
+            return jsonify({'error': '缺少 categories 字段'}), 400
+        
+        # 导入模式：merge（合并）或 replace（替换）
+        mode = request.args.get('mode', 'merge')
+        
+        result = {
+            'success': True,
+            'imported_categories': 0,
+            'imported_items': 0,
+            'skipped': [],
+            'updated': []
+        }
+        
+        # 处理分类
+        existing_categories = load_data(CATEGORIES_FILE)
+        imported_categories = import_data['categories']
+        
+        for cat in imported_categories:
+            existing = next((c for c in existing_categories if c['id'] == cat['id']), None)
+            if existing:
+                if mode == 'replace':
+                    # 替换模式：更新现有分类
+                    existing.update(cat)
+                    result['updated'].append(cat['id'])
+                else:
+                    # 合并模式：跳过已存在的分类
+                    result['skipped'].append(cat['id'])
+            else:
+                # 新分类：添加
+                existing_categories.append(cat)
+                result['imported_categories'] += 1
+        
+        save_data(CATEGORIES_FILE, existing_categories)
+        
+        # 导入各类别数据
+        data_mappings = {
+            'models': 'models.json',
+            'gpus': 'gpus.json',
+            'cpus': 'cpus.json'
+        }
+        
+        for key, filename in data_mappings.items():
+            if key in import_data:
+                data_file = DATA_DIR / filename
+                existing_items = load_data(data_file) if data_file.exists() else []
+                imported_items = import_data[key]
+                
+                for item in imported_items:
+                    existing = next((i for i in existing_items if i['id'] == item['id']), None)
+                    if existing:
+                        if mode == 'replace':
+                            existing.update(item)
+                        else:
+                            continue  # 合并模式跳过
+                    else:
+                        existing_items.append(item)
+                        result['imported_items'] += 1
+                
+                save_data(data_file, existing_items)
+        
+        # 导入动态分类数据
+        for cat in imported_categories:
+            cat_id = cat['id']
+            if cat_id in ['ai-models', 'gpus', 'cpus']:
+                continue
+            if cat_id in import_data:
+                data_file = DATA_DIR / f'{cat_id}.json'
+                existing_items = load_data(data_file) if data_file.exists() else []
+                imported_items = import_data[cat_id]
+                
+                for item in imported_items:
+                    existing = next((i for i in existing_items if i['id'] == item['id']), None)
+                    if existing:
+                        if mode == 'replace':
+                            existing.update(item)
+                        else:
+                            continue
+                    else:
+                        existing_items.append(item)
+                        result['imported_items'] += 1
+                
+                save_data(data_file, existing_items)
+        
+        return jsonify(result)
+    except Exception as e:
+        return jsonify({'error': str(e)}), 500
+
+
+@cat_bp.route('/api/categories/import/<category_id>', methods=['POST'])
+def api_import_single_category(category_id):
+    """导入单个分类数据"""
+    try:
+        import_data = request.get_json()
+        
+        if not import_data:
+            return jsonify({'error': '无导入数据'}), 400
+        
+        if 'category' not in import_data:
+            return jsonify({'error': '缺少 category 字段'}), 400
+        
+        mode = request.args.get('mode', 'merge')
+        
+        result = {
+            'success': True,
+            'imported_items': 0,
+            'updated_items': 0
+        }
+        
+        # 处理分类
+        categories = load_data(CATEGORIES_FILE)
+        imported_cat = import_data['category']
+        
+        existing = next((c for c in categories if c['id'] == category_id), None)
+        if existing:
+            if mode == 'replace':
+                existing.update(imported_cat)
+        else:
+            categories.append(imported_cat)
+        
+        save_data(CATEGORIES_FILE, categories)
+        
+        # 处理数据项
+        if 'items' in import_data:
+            if category_id == 'ai-models':
+                data_file = DATA_DIR / 'models.json'
+            elif category_id == 'gpus':
+                data_file = DATA_DIR / 'gpus.json'
+            elif category_id == 'cpus':
+                data_file = DATA_DIR / 'cpus.json'
+            else:
+                data_file = DATA_DIR / f'{category_id}.json'
+            
+            existing_items = load_data(data_file) if data_file.exists() else []
+            imported_items = import_data['items']
+            
+            for item in imported_items:
+                existing = next((i for i in existing_items if i['id'] == item['id']), None)
+                if existing:
+                    if mode == 'replace':
+                        existing.update(item)
+                        result['updated_items'] += 1
+                else:
+                    existing_items.append(item)
+                    result['imported_items'] += 1
+            
+            save_data(data_file, existing_items)
+        
+        return jsonify(result)
+    except Exception as e:
+        return jsonify({'error': str(e)}), 500
diff --git a/templates/admin.html b/templates/admin.html
index 44353c6..eb01437 100644
--- a/templates/admin.html
+++ b/templates/admin.html
@@ -128,7 +128,11 @@
         <section id="section-categories" class="hidden">
             <div class="flex justify-between items-center mb-6">
                 <h1 class="text-2xl font-bold text-gray-800">分类管理</h1>
-                <button onclick="openAddModal('category')" class="px-4 py-2 bg-blue-600 text-white rounded-lg hover:bg-blue-700"><i class="ri-add-line mr-2"></i>添加分类</button>
+                <div class="flex gap-2">
+                    <button onclick="exportAllCategories()" class="px-4 py-2 bg-teal-600 text-white rounded-lg hover:bg-teal-700"><i class="ri-download-line mr-2"></i>导出全部</button>
+                    <button onclick="openImportModal()" class="px-4 py-2 bg-purple-600 text-white rounded-lg hover:bg-purple-700"><i class="ri-upload-line mr-2"></i>导入数据</button>
+                    <button onclick="openAddModal('category')" class="px-4 py-2 bg-blue-600 text-white rounded-lg hover:bg-blue-700"><i class="ri-add-line mr-2"></i>添加分类</button>
+                </div>
             </div>
             <div class="bg-blue-50 rounded-lg p-4 mb-4">
                 <p class="text-sm text-blue-700"><i class="ri-information-line mr-1"></i>内置分类（AI模型、GPU、CPU）的子类别配置可在此编辑，其数据管理入口在左侧导航栏的独立页面。</p>
@@ -493,6 +497,46 @@
         </div>
     </div>
 
+    <!-- 分类导入弹窗 -->
+    <div id="importModal" class="fixed inset-0 bg-black/50 z-50 hidden flex items-center justify-center">
+        <div class="bg-white rounded-xl max-w-2xl w-full mx-4">
+            <div class="p-6 border-b flex justify-between items-center">
+                <h2 class="text-xl font-bold text-gray-800"><i class="ri-upload-line mr-2 text-purple-600"></i>导入分类数据</h2>
+                <button onclick="closeImportModal()" class="text-gray-400 hover:text-gray-600"><i class="ri-close-line text-2xl"></i></button>
+            </div>
+            <div class="p-6">
+                <div class="bg-purple-50 rounded-lg p-4 mb-4">
+                    <p class="text-sm text-purple-700"><i class="ri-information-line mr-1"></i>导入分类数据时，可选择<strong>合并模式</strong>（保留现有数据，只添加新数据）或<strong>替换模式</strong>（覆盖现有数据）。</p>
+                </div>
+                
+                <div class="space-y-4">
+                    <div>
+                        <label class="text-sm text-gray-600 mb-2 block">选择导入文件（JSON格式）</label>
+                        <input type="file" id="importFileInput" accept=".json" class="w-full px-4 py-2 border rounded-lg" onchange="handleImportFile(event)">
+                    </div>
+                    
+                    <div>
+                        <label class="text-sm text-gray-600 mb-2 block">导入模式</label>
+                        <select id="importMode" class="w-full px-4 py-2 border rounded-lg">
+                            <option value="merge">合并模式 - 保留现有数据，只添加新数据</option>
+                            <option value="replace">替换模式 - 覆盖已存在的数据</option>
+                        </select>
+                    </div>
+                    
+                    <!-- 预览区域 -->
+                    <div id="importPreview" class="hidden border rounded-lg p-4 bg-gray-50">
+                        <h3 class="text-sm font-semibold text-gray-700 mb-3"><i class="ri-eye-line mr-1"></i>导入预览</h3>
+                        <div id="importPreviewContent"></div>
+                    </div>
+                </div>
+            </div>
+            <div class="p-6 border-t flex justify-end gap-4">
+                <button onclick="closeImportModal()" class="px-4 py-2 bg-gray-200 text-gray-600 rounded-lg hover:bg-gray-300">取消</button>
+                <button onclick="doImport()" class="px-4 py-2 bg-purple-600 text-white rounded-lg hover:bg-purple-700"><i class="ri-upload-line mr-1"></i>确认导入</button>
+            </div>
+        </div>
+    </div>
+
     <script>
         let currentType = '';
         let currentId = '';
@@ -940,6 +984,7 @@
                         ${subcatCount > 0 ? `<span class="px-2 py-1 bg-green-100 text-green-600 rounded text-xs">${subcatCount} 个</span>` : '<span class="text-gray-400">无</span>'}
                     </td>
                     <td class="px-4 py-3 text-center">
+                        <button onclick="exportSingleCategory('${c.id}')" class="text-teal-600 hover:text-teal-800 mr-2" title="导出"><i class="ri-download-line"></i></button>
                         <button onclick="editItem('category', '${c.id}')" class="text-blue-600 hover:text-blue-800 mr-2" title="编辑"><i class="ri-edit-line"></i></button>
                         ${!isBuiltin ? `<button onclick="deleteItem('category', '${c.id}')" class="text-red-600 hover:text-red-800" title="删除"><i class="ri-delete-bin-line"></i></button>` : '<span class="text-gray-300 cursor-not-allowed"><i class="ri-delete-bin-line"></i></span>'}
                     </td>
@@ -2678,6 +2723,184 @@
         // 监听编辑弹框打开，显示智能补充按钮
         document.getElementById('editModal').addEventListener('showSmartUpdate', showSmartUpdateButton);
 
+        // ─── 分类导出导入功能 ─────────────────────────────────────────────────
+
+        // 导出所有分类
+        async function exportAllCategories() {
+            try {
+                const res = await fetch('/api/categories/export');
+                if (!res.ok) {
+                    const err = await res.json();
+                    alert('导出失败: ' + err.error);
+                    return;
+                }
+                
+                // 获取文件并下载
+                const blob = await res.blob();
+                const url = window.URL.createObjectURL(blob);
+                const a = document.createElement('a');
+                a.href = url;
+                a.download = `param-hub-categories-export-${new Date().toISOString().slice(0,19).replace(/[:-]/g,'')}.json`;
+                document.body.appendChild(a);
+                a.click();
+                window.URL.revokeObjectURL(url);
+                a.remove();
+            } catch (e) {
+                alert('导出失败: ' + e.message);
+            }
+        }
+
+        // 导出单个分类
+        async function exportSingleCategory(categoryId) {
+            try {
+                const res = await fetch(`/api/categories/export/${categoryId}`);
+                if (!res.ok) {
+                    const err = await res.json();
+                    alert('导出失败: ' + err.error);
+                    return;
+                }
+                
+                const blob = await res.blob();
+                const url = window.URL.createObjectURL(blob);
+                const a = document.createElement('a');
+                a.href = url;
+                a.download = `${categoryId}-export-${new Date().toISOString().slice(0,19).replace(/[:-]/g,'')}.json`;
+                document.body.appendChild(a);
+                a.click();
+                window.URL.revokeObjectURL(url);
+                a.remove();
+            } catch (e) {
+                alert('导出失败: ' + e.message);
+            }
+        }
+
+        // 打开导入弹窗
+        function openImportModal() {
+            document.getElementById('importModal').classList.remove('hidden');
+            document.getElementById('importPreview').classList.add('hidden');
+            document.getElementById('importFileInput').value = '';
+        }
+
+        // 关闭导入弹窗
+        function closeImportModal() {
+            document.getElementById('importModal').classList.add('hidden');
+        }
+
+        // 处理导入文件选择
+        let importData = null;
+        
+        function handleImportFile(event) {
+            const file = event.target.files[0];
+            if (!file) return;
+            
+            const reader = new FileReader();
+            reader.onload = (e) => {
+                try {
+                    importData = JSON.parse(e.target.result);
+                    showImportPreview();
+                } catch (err) {
+                    alert('JSON 解析失败: ' + err.message);
+                }
+            };
+            reader.readAsText(file);
+        }
+
+        // 显示导入预览
+        function showImportPreview() {
+            if (!importData) return;
+            
+            const preview = document.getElementById('importPreview');
+            const content = document.getElementById('importPreviewContent');
+            
+            preview.classList.remove('hidden');
+            
+            let html = '<div class="space-y-2">';
+            
+            // 分类信息
+            if (importData.categories) {
+                html += `<div class="font-medium text-gray-800"><i class="ri-folder-line mr-1"></i>包含 ${importData.categories.length} 个分类</div>`;
+                html += '<div class="flex flex-wrap gap-2 ml-5">';
+                importData.categories.forEach(cat => {
+                    html += `<span class="px-2 py-1 bg-blue-100 text-blue-700 rounded text-xs">${cat.name}</span>`;
+                });
+                html += '</div>';}
+            } else if (importData.category) {
+                html += `<div class="font-medium text-gray-800"><i class="ri-folder-line mr-1"></i>单个分类: ${importData.category.name}</div>`;
+            }
+            
+            // 数据项
+            const itemTypes = ['models', 'gpus', 'cpus', 'items'];
+            let totalItems = 0;
+            itemTypes.forEach(type => {
+                if (importData[type] && importData[type].length > 0) {
+                    totalItems += importData[type].length;
+                    html += `<div class="text-sm text-gray-600 ml-5"><i class="ri-database-line mr-1"></i>${type}: ${importData[type].length} 条</div>`;
+                }
+            });
+            
+            // 动态分类数据
+            const dynamicCats = Object.keys(importData).filter(k => 
+                k !== 'categories' && k !== 'category' && k !== 'export_time' && k !== 'version' && 
+                !itemTypes.includes(k) && Array.isArray(importData[k])
+            );
+            dynamicCats.forEach(catId => {
+                totalItems += importData[catId].length;
+                html += `<div class="text-sm text-gray-600 ml-5"><i class="ri-database-line mr-1"></i>${catId}: ${importData[catId].length} 条</div>`;
+            });
+            
+            html += `<div class="mt-3 text-sm text-gray-500">导出时间: ${importData.export_time || '未知'}</div>`;
+            html += '</div>';content.innerHTML = html;
+        }
+
+        // 执行导入
+        async function doImport() {
+            if (!importData) {
+                alert('请先选择导入文件');
+                return;
+            }
+            
+            const mode = document.getElementById('importMode').value;
+            const categoryId = document.getElementById('importCategoryId').value;
+            
+            try {
+                let endpoint;
+                if (categoryId && importData.category) {
+                    // 导入单个分类
+                    endpoint = `/api/categories/import/${categoryId}?mode=${mode}`;
+                } else {
+                    // 导入全部
+                    endpoint = `/api/categories/import?mode=${mode}`;
+                }
+                
+                const res = await fetch(endpoint, {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    body: JSON.stringify(importData)
+                });
+                
+                const result = await res.json();
+                
+                if (result.error) {
+                    alert('导入失败: ' + result.error);
+                } else {
+                    let msg = '导入成功！\n';
+                    msg += `新增分类: ${result.imported_categories || 0}\n`;msg += `新增数据: ${result.imported_items || 0}\n`;msg += `更新数据: ${result.updated_items || 0}`;
+                    if (result.skipped && result.skipped.length > 0) {
+                        msg += `\n跳过已存在分类: ${result.skipped.join(', ')}`;
+                    }
+                    alert(msg);
+                    
+                    closeImportModal();
+                    await loadCategories();
+                    renderSidebar();
+                    loadAdminCategories();
+                    loadOverview();
+                }
+            } catch (e) {
+                alert('导入失败: ' + e.message);
+            }
+        }
+
         init();
     </script>
 </body>