diff --git a/.gitignore b/.gitignore
index db2de28..a26fc80 100644
--- a/.gitignore
+++ b/.gitignore
@@ -145,4 +145,5 @@ Thumbs.db
 
 # Temporary folders
 tmp/
-temp/
\ No newline at end of file
+temp/
+nul
diff --git a/crop-x/package.json b/crop-x/package.json
index b7bc4c5..f4ec67e 100644
--- a/crop-x/package.json
+++ b/crop-x/package.json
@@ -4,7 +4,6 @@
     "private": true,
     "type": "module",
     "scripts": {
-        "dev": "vite",
         "next:dev": "next dev --turbopack",
         "build": "tsc && vite build",
         "lint": "eslint . --ext ts,tsx --report-unused-disable-directives --max-warnings 0",
diff --git a/crop-x/src/app/(app)/central-config/system/category/components/CategoryFilters.tsx b/crop-x/src/app/(app)/central-config/system/category/components/CategoryFilters.tsx
new file mode 100644
index 0000000..75d2f6b
--- /dev/null
+++ b/crop-x/src/app/(app)/central-config/system/category/components/CategoryFilters.tsx
@@ -0,0 +1,50 @@
+'use client';
+
+import React from 'react';
+import { Card } from '@/components/ui/card';
+import { Input } from '@/components/ui/input';
+import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
+import { Search } from 'lucide-react';
+
+interface CategoryFiltersProps {
+  searchKeyword: string;
+  typeFilter: string;
+  onSearchChange: (value: string) => void;
+  onTypeFilterChange: (value: string) => void;
+}
+
+export function CategoryFilters({
+  searchKeyword,
+  typeFilter,
+  onSearchChange,
+  onTypeFilterChange,
+}: CategoryFiltersProps) {
+  return (
+    <Card className="p-4">
+      <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
+        <div className="relative">
+          <Search className="absolute left-3 top-1/2 transform -translate-y-1/2 w-4 h-4 text-muted-foreground" />
+          <Input
+            placeholder="搜索分类名称、编码..."
+            value={searchKeyword}
+            onChange={(e) => onSearchChange(e.target.value)}
+            className="pl-10"
+          />
+        </div>
+        <Select value={typeFilter} onValueChange={onTypeFilterChange}>
+          <SelectTrigger>
+            <SelectValue placeholder="分类类型" />
+          </SelectTrigger>
+          <SelectContent>
+            <SelectItem value="all">全部类型</SelectItem>
+            <SelectItem value="industry">行业类型</SelectItem>
+            <SelectItem value="equipment">设备类型</SelectItem>
+            <SelectItem value="crop">作物类型</SelectItem>
+            <SelectItem value="operation">作业类型</SelectItem>
+            <SelectItem value="other">其他</SelectItem>
+          </SelectContent>
+        </Select>
+      </div>
+    </Card>
+  );
+}
\ No newline at end of file
diff --git a/crop-x/src/app/(app)/central-config/system/category/components/CategoryFormDialog.tsx b/crop-x/src/app/(app)/central-config/system/category/components/CategoryFormDialog.tsx
new file mode 100644
index 0000000..841a667
--- /dev/null
+++ b/crop-x/src/app/(app)/central-config/system/category/components/CategoryFormDialog.tsx
@@ -0,0 +1,137 @@
+'use client';
+
+import React from 'react';
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogHeader,
+  DialogTitle,
+  DialogFooter,
+} from '@/components/ui/dialog';
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+import { Label } from '@/components/ui/label';
+import { Textarea } from '@/components/ui/textarea';
+import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
+import { Switch } from '@/components/ui/switch';
+import { CategoryDictionary, CategoryFormData } from '../types';
+
+interface CategoryFormDialogProps {
+  open: boolean;
+  editing?: CategoryDictionary;
+  parent?: CategoryDictionary | null;
+  formData: CategoryFormData;
+  onOpenChange: (open: boolean) => void;
+  onFormDataChange: (data: Partial<CategoryFormData>) => void;
+  onSave: () => void;
+}
+
+export function CategoryFormDialog({
+  open,
+  editing,
+  parent,
+  formData,
+  onOpenChange,
+  onFormDataChange,
+  onSave,
+}: CategoryFormDialogProps) {
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="sm:max-w-[425px]">
+        <DialogHeader>
+          <DialogTitle>
+            {editing ? '编辑分类' : '新增分类'}
+          </DialogTitle>
+          <DialogDescription className="sr-only">
+            {editing ? '编辑分类信息' : '添加新分类'}
+          </DialogDescription>
+        </DialogHeader>
+        <div className="space-y-4">
+          {parent && (
+            <div className="p-3 bg-blue-50 dark:bg-blue-900/20 border border-blue-200 dark:border-blue-800 rounded-lg">
+              <Label className="text-sm text-blue-900 dark:text-blue-100">上级分类</Label>
+              <p className="mt-1 dark:text-gray-100">{parent.name}</p>
+            </div>
+          )}
+          <div className="grid grid-cols-2 gap-4">
+            <div>
+              <Label htmlFor="code">分类编码 *</Label>
+              <Input
+                id="code"
+                value={formData.code}
+                onChange={(e) => onFormDataChange({ code: e.target.value })}
+                placeholder="IND001"
+              />
+            </div>
+            <div>
+              <Label htmlFor="name">分类名称 *</Label>
+              <Input
+                id="name"
+                value={formData.name}
+                onChange={(e) => onFormDataChange({ name: e.target.value })}
+                placeholder="请输入名称"
+              />
+            </div>
+          </div>
+          <div>
+            <Label htmlFor="type">分类类型</Label>
+            <Select
+              value={formData.type}
+              onValueChange={(value) => onFormDataChange({ type: value })}
+              disabled={!!parent}
+            >
+              <SelectTrigger>
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                <SelectItem value="industry">行业类型</SelectItem>
+                <SelectItem value="equipment">设备类型</SelectItem>
+                <SelectItem value="crop">作物类型</SelectItem>
+                <SelectItem value="operation">作业类型</SelectItem>
+                <SelectItem value="other">其他</SelectItem>
+              </SelectContent>
+            </Select>
+          </div>
+          <div>
+            <Label htmlFor="description">描述</Label>
+            <Textarea
+              id="description"
+              value={formData.description}
+              onChange={(e) => onFormDataChange({ description: e.target.value })}
+              placeholder="请输入描述"
+              rows={3}
+            />
+          </div>
+          <div className="grid grid-cols-2 gap-4">
+            <div>
+              <Label htmlFor="sortOrder">排序</Label>
+              <Input
+                id="sortOrder"
+                type="number"
+                value={formData.sortOrder}
+                onChange={(e) => onFormDataChange({ sortOrder: parseInt(e.target.value) || 0 })}
+              />
+            </div>
+            <div className="flex items-center justify-between pt-6">
+              <Label htmlFor="isActive">是否启用</Label>
+              <Switch
+                id="isActive"
+                checked={formData.isActive}
+                onCheckedChange={(checked) => onFormDataChange({ isActive: checked })}
+              />
+            </div>
+          </div>
+        </div>
+        <DialogFooter>
+          <Button variant="outline" onClick={() => onOpenChange(false)}>
+            取消
+          </Button>
+          <Button onClick={onSave}>
+            保存
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+}
\ No newline at end of file
diff --git a/crop-x/src/app/(app)/central-config/system/category/components/CategoryInstructions.tsx b/crop-x/src/app/(app)/central-config/system/category/components/CategoryInstructions.tsx
new file mode 100644
index 0000000..4f85962
--- /dev/null
+++ b/crop-x/src/app/(app)/central-config/system/category/components/CategoryInstructions.tsx
@@ -0,0 +1,23 @@
+'use client';
+
+import React from 'react';
+import { Card } from '@/components/ui/card';
+import { FolderTree } from 'lucide-react';
+
+export function CategoryInstructions() {
+  return (
+    <Card className="p-4 bg-blue-50 dark:bg-blue-900/20 border-blue-200 dark:border-blue-800">
+      <h4 className="text-blue-900 dark:text-blue-100 mb-2">
+        <FolderTree className="w-4 h-4 inline mr-2" />
+        分类字典说明
+      </h4>
+      <ul className="space-y-1 text-sm text-blue-800 dark:text-blue-200">
+        <li>• 支持多级树形结构，可无限级嵌套</li>
+        <li>• 点击文件夹图标可展开/收起子分类</li>
+        <li>• 鼠标悬停在分类上可显示操作按钮</li>
+        <li>• 删除前需先删除所有子分类</li>
+        <li>• 分类编码建议使用层级编码规则（如 IND001-01）</li>
+      </ul>
+    </Card>
+  );
+}
\ No newline at end of file
diff --git a/crop-x/src/app/(app)/central-config/system/category/components/CategoryTree.tsx b/crop-x/src/app/(app)/central-config/system/category/components/CategoryTree.tsx
new file mode 100644
index 0000000..c9489db
--- /dev/null
+++ b/crop-x/src/app/(app)/central-config/system/category/components/CategoryTree.tsx
@@ -0,0 +1,114 @@
+'use client';
+
+import React from 'react';
+import { Card } from '@/components/ui/card';
+import { Button } from '@/components/ui/button';
+import { Badge } from '@/components/ui/badge';
+import {
+  ChevronRight,
+  ChevronDown,
+  Folder,
+  File,
+  Plus,
+  Edit,
+  Trash2
+} from 'lucide-react';
+import { CategoryDictionary } from '../types';
+
+interface CategoryTreeProps {
+  categories: CategoryDictionary[];
+  expandedIds: Set<string>;
+  onToggleExpand: (id: string) => void;
+  onAdd: (parent?: CategoryDictionary) => void;
+  onEdit: (category: CategoryDictionary) => void;
+  onDelete: (id: string) => void;
+}
+
+export function CategoryTree({
+  categories,
+  expandedIds,
+  onToggleExpand,
+  onAdd,
+  onEdit,
+  onDelete,
+}: CategoryTreeProps) {
+  const renderTree = (nodes: CategoryDictionary[], level: number = 0) => {
+    return nodes.map(node => (
+      <div key={node.id} style={{ marginLeft: `${level * 24}px` }}>
+        <div className="flex items-center gap-2 py-2 px-3 hover:bg-gray-50 dark:hover:bg-gray-800 rounded-lg group">
+          <div className="flex-1 flex items-center gap-2">
+            {node.children && node.children.length > 0 ? (
+              <button
+                onClick={() => onToggleExpand(node.id)}
+                className="p-1 hover:bg-gray-200 dark:hover:bg-gray-700 rounded"
+              >
+                {expandedIds.has(node.id) ? (
+                  <ChevronDown className="w-4 h-4" />
+                ) : (
+                  <ChevronRight className="w-4 h-4" />
+                )}
+              </button>
+            ) : (
+              <div className="w-6" />
+            )}
+            {node.children && node.children.length > 0 ? (
+              <Folder className="w-4 h-4 text-yellow-600 dark:text-yellow-500" />
+            ) : (
+              <File className="w-4 h-4 text-gray-400 dark:text-gray-500" />
+            )}
+            <div className="flex-1">
+              <div className="flex items-center gap-2">
+                <span className="dark:text-gray-100">{node.name}</span>
+                <Badge variant="outline" className="text-xs">{node.code}</Badge>
+                {!node.isActive && (
+                  <Badge variant="outline" className="text-xs text-red-600 dark:text-red-400">已停用</Badge>
+                )}
+              </div>
+              {node.description && (
+                <p className="text-xs text-muted-foreground dark:text-gray-400">{node.description}</p>
+              )}
+            </div>
+          </div>
+          <div className="flex gap-1 opacity-0 group-hover:opacity-100 transition-opacity">
+            <Button
+              variant="ghost"
+              size="sm"
+              onClick={() => onAdd(node)}
+            >
+              <Plus className="w-4 h-4" />
+            </Button>
+            <Button
+              variant="ghost"
+              size="sm"
+              onClick={() => onEdit(node)}
+            >
+              <Edit className="w-4 h-4" />
+            </Button>
+            <Button
+              variant="ghost"
+              size="sm"
+              onClick={() => onDelete(node.id)}
+            >
+              <Trash2 className="w-4 h-4" />
+            </Button>
+          </div>
+        </div>
+        {expandedIds.has(node.id) && node.children && renderTree(node.children, level + 1)}
+      </div>
+    ));
+  };
+
+  return (
+    <Card className="p-4">
+      <div className="min-h-[400px]">
+        {categories.length === 0 ? (
+          <div className="text-center text-muted-foreground py-12">
+            暂无分类数据
+          </div>
+        ) : (
+          renderTree(categories)
+        )}
+      </div>
+    </Card>
+  );
+}
\ No newline at end of file
diff --git a/crop-x/src/app/(app)/central-config/system/category/page.tsx b/crop-x/src/app/(app)/central-config/system/category/page.tsx
index 69036a5..5c8ec41 100644
--- a/crop-x/src/app/(app)/central-config/system/category/page.tsx
+++ b/crop-x/src/app/(app)/central-config/system/category/page.tsx
@@ -1,14 +1,306 @@
 'use client';
 
-import React from 'react';
+import React, { useReducer, useEffect } from 'react';
+import { Button } from '@/components/ui/button';
+import { Plus } from 'lucide-react';
+import { toast } from 'sonner';
+
+import { CategoryDictionary, CategoryAction } from './types';
+import { categoryReducer, initialState } from './reducer';
+import { CategoryFilters } from './components/CategoryFilters';
+import { CategoryTree } from './components/CategoryTree';
+import { CategoryFormDialog } from './components/CategoryFormDialog';
+import { CategoryInstructions } from './components/CategoryInstructions';
 
 export default function CategoryDictionaryPage() {
+  const [state, dispatch] = useReducer(categoryReducer, initialState);
+
+  // 模拟数据加载
+  useEffect(() => {
+    const mockData: CategoryDictionary[] = [
+      {
+        id: 'cat-1',
+        code: 'IND001',
+        name: '种植业',
+        type: 'industry',
+        level: 1,
+        sortOrder: 1,
+        description: '农作物种植相关行业',
+        isActive: true,
+        createdAt: '2024-01-01T00:00:00',
+        updatedAt: '2024-01-01T00:00:00',
+      },
+      {
+        id: 'cat-2',
+        code: 'IND001-01',
+        name: '粮食作物',
+        type: 'industry',
+        parentId: 'cat-1',
+        level: 2,
+        sortOrder: 1,
+        description: '小麦、水稻、玉米等粮食作物',
+        isActive: true,
+        createdAt: '2024-01-01T00:00:00',
+        updatedAt: '2024-01-01T00:00:00',
+      },
+      {
+        id: 'cat-3',
+        code: 'IND001-02',
+        name: '经济作物',
+        type: 'industry',
+        parentId: 'cat-1',
+        level: 2,
+        sortOrder: 2,
+        description: '棉花、油料、糖料等经济作物',
+        isActive: true,
+        createdAt: '2024-01-01T00:00:00',
+        updatedAt: '2024-01-01T00:00:00',
+      },
+      {
+        id: 'cat-4',
+        code: 'IND002',
+        name: '畜牧业',
+        type: 'industry',
+        level: 1,
+        sortOrder: 2,
+        description: '牲畜饲养相关行业',
+        isActive: true,
+        createdAt: '2024-01-01T00:00:00',
+        updatedAt: '2024-01-01T00:00:00',
+      },
+      {
+        id: 'cat-5',
+        code: 'EQP001',
+        name: '动力机械',
+        type: 'equipment',
+        level: 1,
+        sortOrder: 1,
+        description: '拖拉机等动力设备',
+        isActive: true,
+        createdAt: '2024-01-01T00:00:00',
+        updatedAt: '2024-01-01T00:00:00',
+      },
+      {
+        id: 'cat-6',
+        code: 'EQP001-01',
+        name: '轮式拖拉机',
+        type: 'equipment',
+        parentId: 'cat-5',
+        level: 2,
+        sortOrder: 1,
+        isActive: true,
+        createdAt: '2024-01-01T00:00:00',
+        updatedAt: '2024-01-01T00:00:00',
+      },
+      {
+        id: 'cat-7',
+        code: 'EQP001-02',
+        name: '履带式拖拉机',
+        type: 'equipment',
+        parentId: 'cat-5',
+        level: 2,
+        sortOrder: 2,
+        isActive: true,
+        createdAt: '2024-01-01T00:00:00',
+        updatedAt: '2024-01-01T00:00:00',
+      },
+      {
+        id: 'cat-8',
+        code: 'EQP002',
+        name: '收获机械',
+        type: 'equipment',
+        level: 1,
+        sortOrder: 2,
+        description: '收割机、采摘机等',
+        isActive: true,
+        createdAt: '2024-01-01T00:00:00',
+        updatedAt: '2024-01-01T00:00:00',
+      },
+    ];
+
+    // 尝试从 localStorage 加载数据
+    const storedData = localStorage.getItem('smart_agriculture_category_dictionary');
+    if (storedData) {
+      try {
+        const data = JSON.parse(storedData);
+        dispatch({ type: 'SET_CATEGORIES', payload: data });
+      } catch (error) {
+        console.error('Failed to parse stored data:', error);
+        dispatch({ type: 'SET_CATEGORIES', payload: mockData });
+      }
+    } else {
+      dispatch({ type: 'SET_CATEGORIES', payload: mockData });
+    }
+  }, []);
+
+  // 保存数据到 localStorage
+  const saveCategories = (categories: CategoryDictionary[]) => {
+    localStorage.setItem('smart_agriculture_category_dictionary', JSON.stringify(categories));
+    dispatch({ type: 'SET_CATEGORIES', payload: categories });
+  };
+
+  // 构建树形结构
+  const buildTree = (items: CategoryDictionary[]): CategoryDictionary[] => {
+    const map = new Map<string, CategoryDictionary>();
+    const roots: CategoryDictionary[] = [];
+
+    // 创建映射
+    items.forEach(item => {
+      map.set(item.id, { ...item, children: [] });
+    });
+
+    // 构建树
+    items.forEach(item => {
+      const node = map.get(item.id)!;
+      if (item.parentId) {
+        const parent = map.get(item.parentId);
+        if (parent) {
+          parent.children = parent.children || [];
+          parent.children.push(node);
+        }
+      } else {
+        roots.push(node);
+      }
+    });
+
+    return roots;
+  };
+
+  // 过滤分类数据
+  const filteredCategories = state.categories.filter(cat => {
+    const matchKeyword = !state.searchKeyword ||
+      cat.name.includes(state.searchKeyword) ||
+      cat.code.includes(state.searchKeyword);
+    const matchType = state.typeFilter === 'all' || cat.type === state.typeFilter;
+    return matchKeyword && matchType;
+  });
+
+  const treeData = buildTree(filteredCategories);
+
+  // 处理新增
+  const handleAdd = (parent?: CategoryDictionary) => {
+    dispatch({
+      type: 'SET_DIALOG_STATE',
+      payload: {
+        open: true,
+        editing: undefined,
+        parent: parent || null,
+      },
+    });
+  };
+
+  // 处理编辑
+  const handleEdit = (category: CategoryDictionary) => {
+    dispatch({
+      type: 'SET_DIALOG_STATE',
+      payload: {
+        open: true,
+        editing: category,
+        parent: undefined,
+      },
+    });
+  };
+
+  // 处理删除
+  const handleDelete = (id: string) => {
+    // 检查是否有子分类
+    const hasChildren = state.categories.some(cat => cat.parentId === id);
+    if (hasChildren) {
+      toast.error('请先删除子分类');
+      return;
+    }
+
+    const updated = state.categories.filter(cat => cat.id !== id);
+    saveCategories(updated);
+    toast.success('删除成功');
+  };
+
+  // 处理保存
+  const handleSave = () => {
+    if (!state.formData.code.trim() || !state.formData.name.trim()) {
+      toast.error('请填写编码和名称');
+      return;
+    }
+
+    if (state.dialogState.editing) {
+      // 编辑
+      dispatch({
+        type: 'UPDATE_CATEGORY',
+        payload: {
+          id: state.dialogState.editing.id,
+          updates: state.formData,
+        },
+      });
+      saveCategories(state.categories);
+      toast.success('更新成功');
+    } else {
+      // 新增
+      const newCategory: CategoryDictionary = {
+        id: `cat-${Date.now()}`,
+        ...state.formData,
+        parentId: state.dialogState.parent?.id,
+        level: state.dialogState.parent ? state.dialogState.parent.level + 1 : 1,
+        createdAt: new Date().toISOString(),
+        updatedAt: new Date().toISOString(),
+      };
+      dispatch({ type: 'ADD_CATEGORY', payload: newCategory });
+      saveCategories([...state.categories, newCategory]);
+      toast.success('添加成功');
+    }
+
+    dispatch({
+      type: 'SET_DIALOG_STATE',
+      payload: { open: false, editing: undefined, parent: undefined },
+    });
+  };
+
   return (
-    <div className="p-6">
-      <h1 className="text-2xl font-bold mb-4">分类字典</h1>
-      <div className="bg-white rounded-lg shadow p-4">
-        <p>分类字典页面 - 路径: /config/system/category</p>
+    <div className="space-y-6 p-6">
+      <div className="flex items-center justify-between">
+        <div>
+          <h2 className="text-2xl font-bold text-green-800 dark:text-green-600">分类字典</h2>
+          <p className="text-muted-foreground dark:text-gray-400">树形结构管理系统常用分类数据</p>
+        </div>
+        <Button onClick={() => handleAdd()}>
+          <Plus className="w-4 h-4 mr-2" />
+          新增分类
+        </Button>
       </div>
+
+      {/* 搜索和筛选 */}
+      <CategoryFilters
+        searchKeyword={state.searchKeyword}
+        typeFilter={state.typeFilter}
+        onSearchChange={(value) => dispatch({ type: 'SET_SEARCH_KEYWORD', payload: value })}
+        onTypeFilterChange={(value) => dispatch({ type: 'SET_TYPE_FILTER', payload: value })}
+      />
+
+      {/* 分类树 */}
+      <CategoryTree
+        categories={treeData}
+        expandedIds={state.expandedIds}
+        onToggleExpand={(id) => dispatch({ type: 'TOGGLE_EXPAND', payload: id })}
+        onAdd={handleAdd}
+        onEdit={handleEdit}
+        onDelete={handleDelete}
+      />
+
+      {/* 编辑对话框 */}
+      <CategoryFormDialog
+        open={state.dialogState.open}
+        editing={state.dialogState.editing}
+        parent={state.dialogState.parent}
+        formData={state.formData}
+        onOpenChange={(open) => dispatch({
+          type: 'SET_DIALOG_STATE',
+          payload: { open, editing: undefined, parent: undefined },
+        })}
+        onFormDataChange={(data) => dispatch({ type: 'SET_FORM_DATA', payload: data })}
+        onSave={handleSave}
+      />
+
+      {/* 使用说明 */}
+      <CategoryInstructions />
     </div>
   );
 }
\ No newline at end of file
diff --git a/crop-x/src/app/(app)/central-config/system/category/reducer.ts b/crop-x/src/app/(app)/central-config/system/category/reducer.ts
new file mode 100644
index 0000000..8c7b4f7
--- /dev/null
+++ b/crop-x/src/app/(app)/central-config/system/category/reducer.ts
@@ -0,0 +1,94 @@
+import { CategoryDictionary, CategoryAction, CategoryState, CategoryFormData } from './types';
+
+const initialFormData: CategoryFormData = {
+  code: '',
+  name: '',
+  type: 'industry',
+  description: '',
+  sortOrder: 0,
+  isActive: true,
+};
+
+export const initialState: CategoryState = {
+  categories: [],
+  searchKeyword: '',
+  typeFilter: 'all',
+  expandedIds: new Set(),
+  dialogState: {
+    open: false,
+    editing: undefined,
+    parent: undefined,
+  },
+  formData: initialFormData,
+};
+
+export function categoryReducer(state: CategoryState, action: CategoryAction): CategoryState {
+  switch (action.type) {
+    case 'SET_CATEGORIES':
+      return { ...state, categories: action.payload };
+
+    case 'ADD_CATEGORY':
+      return { ...state, categories: [...state.categories, action.payload] };
+
+    case 'UPDATE_CATEGORY':
+      return {
+        ...state,
+        categories: state.categories.map(cat =>
+          cat.id === action.payload.id
+            ? { ...cat, ...action.payload.updates, updatedAt: new Date().toISOString() }
+            : cat
+        ),
+      };
+
+    case 'DELETE_CATEGORY':
+      return {
+        ...state,
+        categories: state.categories.filter(cat => cat.id !== action.payload),
+      };
+
+    case 'SET_SEARCH_KEYWORD':
+      return { ...state, searchKeyword: action.payload };
+
+    case 'SET_TYPE_FILTER':
+      return { ...state, typeFilter: action.payload };
+
+    case 'TOGGLE_EXPAND':
+      const newExpanded = new Set(state.expandedIds);
+      if (newExpanded.has(action.payload)) {
+        newExpanded.delete(action.payload);
+      } else {
+        newExpanded.add(action.payload);
+      }
+      return { ...state, expandedIds: newExpanded };
+
+    case 'SET_DIALOG_STATE':
+      return {
+        ...state,
+        dialogState: action.payload,
+        formData: action.payload.editing
+          ? {
+              code: action.payload.editing.code,
+              name: action.payload.editing.name,
+              type: action.payload.editing.type,
+              description: action.payload.editing.description || '',
+              sortOrder: action.payload.editing.sortOrder,
+              isActive: action.payload.editing.isActive,
+            }
+          : action.payload.parent
+            ? {
+                ...initialFormData,
+                type: action.payload.parent.type,
+              }
+            : initialFormData,
+      };
+
+    case 'SET_FORM_DATA':
+      return {
+        ...state,
+        formData: { ...state.formData, ...action.payload },
+      };
+
+    default:
+      return state;
+  }
+}
\ No newline at end of file
diff --git a/crop-x/src/app/(app)/central-config/system/category/types.ts b/crop-x/src/app/(app)/central-config/system/category/types.ts
new file mode 100644
index 0000000..046220b
--- /dev/null
+++ b/crop-x/src/app/(app)/central-config/system/category/types.ts
@@ -0,0 +1,53 @@
+// 分类字典类型定义
+export interface CategoryDictionary {
+  id: string;
+  code: string;
+  name: string;
+  type: string; // 分类类型：industry, equipment, crop等
+  parentId?: string;
+  level: number;
+  sortOrder: number;
+  description?: string;
+  isActive: boolean;
+  children?: CategoryDictionary[];
+  createdAt: string;
+  updatedAt: string;
+}
+
+export type CategoryType = 'industry' | 'equipment' | 'crop' | 'operation' | 'other';
+
+// 分类表单数据
+export interface CategoryFormData {
+  code: string;
+  name: string;
+  type: string;
+  description: string;
+  sortOrder: number;
+  isActive: boolean;
+}
+
+// 分类操作类型
+export type CategoryAction =
+  | { type: 'SET_CATEGORIES'; payload: CategoryDictionary[] }
+  | { type: 'ADD_CATEGORY'; payload: CategoryDictionary }
+  | { type: 'UPDATE_CATEGORY'; payload: { id: string; updates: Partial<CategoryDictionary> } }
+  | { type: 'DELETE_CATEGORY'; payload: string }
+  | { type: 'SET_SEARCH_KEYWORD'; payload: string }
+  | { type: 'SET_TYPE_FILTER'; payload: string }
+  | { type: 'TOGGLE_EXPAND'; payload: string }
+  | { type: 'SET_DIALOG_STATE'; payload: { open: boolean; editing?: CategoryDictionary; parent?: CategoryDictionary | null } }
+  | { type: 'SET_FORM_DATA'; payload: Partial<CategoryFormData> };
+
+// 分类状态
+export interface CategoryState {
+  categories: CategoryDictionary[];
+  searchKeyword: string;
+  typeFilter: string;
+  expandedIds: Set<string>;
+  dialogState: {
+    open: boolean;
+    editing?: CategoryDictionary;
+    parent?: CategoryDictionary | null;
+  };
+  formData: CategoryFormData;
+}
\ No newline at end of file
diff --git a/crop-x/src/app/(app)/central-config/user/role/components/RoleFormDialog.tsx b/crop-x/src/app/(app)/central-config/user/role/components/RoleFormDialog.tsx
index 61a0ad7..2d8f589 100644
--- a/crop-x/src/app/(app)/central-config/user/role/components/RoleFormDialog.tsx
+++ b/crop-x/src/app/(app)/central-config/user/role/components/RoleFormDialog.tsx
@@ -90,7 +90,7 @@ export function RoleFormDialog({
                 <h4 className="text-green-800">菜单与操作权限</h4>
                 <p className="text-xs text-muted-foreground">选择菜单后可配置该菜单下的操作权限</p>
               </div>
-              <Card className="p-4 bg-gray-50">
+              <Card className="p-4 bg-gray-50 bg-input-background">
                 <div className="space-y-6">
                   {allSystemMenus.map((system) => (
                     <div key={system.id} className="space-y-3">
diff --git a/crop-x/src/components/ui/input.tsx b/crop-x/src/components/ui/input.tsx
index 8916905..b084b11 100644
--- a/crop-x/src/components/ui/input.tsx
+++ b/crop-x/src/components/ui/input.tsx
@@ -8,7 +8,7 @@ function Input({ className, type, ...props }: React.ComponentProps<"input">) {
       type={type}
       data-slot="input"
       className={cn(
-        "file:text-foreground placeholder:text-muted-foreground selection:bg-primary selection:text-primary-foreground dark:bg-input/30 border-input h-9 w-full min-w-0 rounded-md border bg-transparent px-3 py-1 text-base shadow-xs transition-[color,box-shadow] outline-none file:inline-flex file:h-7 file:border-0 file:bg-transparent file:text-sm file:font-medium disabled:pointer-events-none disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
+        "file:text-foreground placeholder:text-muted-foreground selection:bg-primary selection:text-primary-foreground dark:bg-input/30 border-input h-9 w-full min-w-0 rounded-md border bg-transparent px-3 py-1 text-base shadow-xs transition-[color,box-shadow] outline-none file:inline-flex file:h-7 file:border-0 file:bg-transparent file:text-sm file:font-medium disabled:pointer-events-none disabled:cursor-not-allowed disabled:opacity-50 md:text-sm bg-input-background",
         "focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px]",
         "aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive",
         className
diff --git a/crop-x/src/components/ui/textarea.tsx b/crop-x/src/components/ui/textarea.tsx
index 4d858bb..83efca9 100644
--- a/crop-x/src/components/ui/textarea.tsx
+++ b/crop-x/src/components/ui/textarea.tsx
@@ -9,7 +9,7 @@ const Textarea = React.forwardRef<
   return (
     <textarea
       className={cn(
-        "flex min-h-[80px] w-full rounded-md border border-input bg-background px-3 py-2 text-base ring-offset-background placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
+        "flex min-h-[80px] w-full rounded-md border border-input bg-background px-3 py-2 text-base ring-offset-background placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50 md:text-sm bg-input-background",
         className
       )}
       ref={ref}
diff --git a/crop-x/src/styles/globals.css b/crop-x/src/styles/globals.css
index 29295ec..9cff4c3 100644
--- a/crop-x/src/styles/globals.css
+++ b/crop-x/src/styles/globals.css
@@ -3,10 +3,12 @@
 
 @custom-variant dark (&:is(.dark *));
 @config "../../tailwind.config.js";
+@import "./body.css";
 
 /* CSS变量定义 - 农业管理系统主题 */
 :root {
   /* 基础色彩系统 */
+  --input-background: #f3f3f5;
   --background: 240 10% 98%;
   --foreground: 240 10% 10%;
   --card: 0 0% 100%;
@@ -291,7 +293,7 @@
   --color-sidebar-ring: var(--sidebar-ring);
   --animate-accordion-down: accordion-down 0.2s ease-out;
   --animate-accordion-up: accordion-up 0.2s ease-out;
-
+  --color-input-background: var(--input-background);
   @keyframes accordion-down {
     from {
       height: 0;
@@ -325,4 +327,15 @@
     }
   
 }
-@import "./body.css";
\ No newline at end of file
+
+@layer utilities {
+  .\@container\/card-header {
+    container: card-header / inline-size;
+  }
+  .bg-input-background {
+    background-color: var(--input-background);
+  }
+  .focus-visible\:ring-ring\/50:focus-visible {
+    --tw-ring-color: var(--ring);
+  }
+}