feat(about): 重构“关于我们”页面并丰富内容展示

- 采用左右分栏布局，左侧新增图标导航
- 全新设计顶部 Banner，提升视觉效果
- 添加学会简介数据亮点和主要职能展示
- 新增组织机构图、主要领导及专家委员会成员展示
- 引入学会章程章节分明条目展示
- 丰富咨询服务内容，新增服务项目卡片和联系方式
- “加入我们”板块支持企业与个人会员申请详情说明
- 支持资料下载并优化排版与交互体验
- 增强响应式支持，保证移动端体验一致
- 页面样式大幅调整，提升整体美观与可读性

app/config/admin-nav.ts

@@ -1,15 +1,19 @@
 import type { Component } from 'vue'
 import {
-  AppstoreOutlined,
-  AuditOutlined,
   DashboardOutlined,
+  FileTextOutlined,
   TeamOutlined,
   SettingOutlined,
-  FileTextOutlined,
-  CustomerServiceOutlined,
-  ShopOutlined,
-  GitlabOutlined,
-  GlobalOutlined,
+  AuditOutlined,
+  MessageOutlined,
+  UserOutlined,
+  SolutionOutlined,
+  BankOutlined,
+  NotificationOutlined,
+  FolderOutlined,
+  BookOutlined,
+  StarOutlined,
+  FormOutlined,
 } from '@ant-design/icons-vue'
 
 export type AdminNavItem = {
@@ -42,63 +46,73 @@ export const adminNav: AdminNavEntry[] = [
     icon: DashboardOutlined,
     to: '/admin',
   },
-  {
-    key: 'admin-app-review',
-    label: '应用审核',
-    icon: AuditOutlined,
-    badge: 'NEW',
-    to: '/admin/app-review',
-  },
-  {
-    key: 'admin-git-review',
-    label: 'Git 审核',
-    icon: GitlabOutlined,
-    to: '/admin/git-review',
-  },
-  {
-    key: 'admin-apps',
-    label: '应用管理',
-    icon: AppstoreOutlined,
-    children: [
-      { key: 'admin-all-apps', label: '全局应用', icon: GlobalOutlined, to: '/admin/all-apps' },
-      { key: 'admin-apps-list', label: '我的应用', icon: AppstoreOutlined, to: '/admin/apps' },
-      { key: 'admin-market', label: '应用市场', icon: ShopOutlined, to: '/admin/market' },
-    ],
-  },
-  {
-    key: 'admin-users',
-    label: '用户管理',
-    icon: TeamOutlined,
-    children: [
-      { key: 'admin-users-list', label: '所有用户', icon: TeamOutlined, to: '/admin/users' },
-      { key: 'admin-developers', label: '开发者', icon: TeamOutlined, to: '/admin/developers' },
-    ],
-  },
-  {
-    key: 'admin-tickets',
-    label: '工单处理',
-    icon: CustomerServiceOutlined,
-    to: '/admin/tickets',
-  },
+  // ── 内容管理 ──
   {
     key: 'admin-content',
     label: '内容管理',
     icon: FileTextOutlined,
     children: [
       { key: 'admin-articles', label: '文章管理', icon: FileTextOutlined, to: '/admin/articles' },
-      { key: 'admin-article-categories', label: '文章分类', icon: FileTextOutlined, to: '/admin/article-categories' },
-      { key: 'admin-announcements', label: '公告管理', icon: FileTextOutlined, to: '/admin/announcements' },
+      { key: 'admin-categories', label: '栏目管理', icon: FolderOutlined, to: '/admin/categories' },
+      { key: 'admin-announcements', label: '公告管理', icon: NotificationOutlined, to: '/admin/announcements' },
     ],
   },
+  // ── 专家管理 ──
   {
-    key: 'admin-tenant',
-    label: '租户管理',
-    icon: ShopOutlined,
-    to: '/admin/tenants',
+    key: 'admin-experts',
+    label: '专家管理',
+    icon: StarOutlined,
+    children: [
+      { key: 'admin-experts-list', label: '专家列表', icon: SolutionOutlined, to: '/admin/experts' },
+      { key: 'admin-experts-review', label: '专家审核', icon: AuditOutlined, to: '/admin/experts/review', },
+    ],
   },
+  // ── 会员管理 ──
+  {
+    key: 'admin-members',
+    label: '会员管理',
+    icon: BankOutlined,
+    children: [
+      { key: 'admin-members-list', label: '会员列表', icon: TeamOutlined, to: '/admin/members' },
+      { key: 'admin-members-review', label: '会员审核', icon: AuditOutlined, to: '/admin/members/review' },
+    ],
+  },
+  // ── 建言献策 ──
+  {
+    key: 'admin-suggestions',
+    label: '建言献策',
+    icon: MessageOutlined,
+    to: '/admin/suggestions',
+    badge: 'NEW',
+  },
+  // ── 用户管理 ──
+  {
+    key: 'admin-users',
+    label: '用户管理',
+    icon: UserOutlined,
+    to: '/admin/users',
+  },
+  // ── 资料下载 ──
+  {
+    key: 'admin-downloads',
+    label: '资料下载管理',
+    icon: BookOutlined,
+    to: '/admin/downloads',
+  },
+  // ── 申请管理 ──
+  {
+    key: 'admin-applications',
+    label: '申请管理',
+    icon: FormOutlined,
+    children: [
+      { key: 'admin-expert-applications', label: '专家申请', icon: SolutionOutlined, to: '/admin/applications/expert' },
+      { key: 'admin-member-applications', label: '会员申请', icon: TeamOutlined, to: '/admin/applications/member' },
+    ],
+  },
+  // ── 系统设置 ──
   {
     key: 'admin-settings',
-    label: '平台设置',
+    label: '系统设置',
     icon: SettingOutlined,
     to: '/admin/settings',
   },