diff --git a/klp-ui/src/layout/components/Sidebar/SidebarItem.vue b/klp-ui/src/layout/components/Sidebar/SidebarItem.vue
index 10813cd04..6c5d4021e 100644
--- a/klp-ui/src/layout/components/Sidebar/SidebarItem.vue
+++ b/klp-ui/src/layout/components/Sidebar/SidebarItem.vue
@@ -88,17 +88,19 @@ export default {
       return this.basePath
     },
     subMenuRoute() {
-      const title = (this.item.meta && this.item.meta.title) || this.item.name || ''
-      return {
-        path: '/redirect/subMenu',
-        query: {
-          parent: this.basePath,
-          title: title
-        }
-      }
+      return this.findFirstLeaf(this.item, this.basePath)
     }
   },
   methods: {
+    findFirstLeaf(item, basePath) {
+      const visibleChildren = (item.children || []).filter(c => !c.hidden)
+      if (visibleChildren.length === 0) {
+        return basePath
+      }
+      const firstChild = visibleChildren[0]
+      const childPath = path.resolve(basePath, firstChild.path)
+      return this.findFirstLeaf(firstChild, childPath)
+    },
     hasOneShowingChild(children = [], parent) {
       if (!children) {
         children = [];
diff --git a/klp-ui/src/layout/components/Sidebar/index.vue b/klp-ui/src/layout/components/Sidebar/index.vue
index 39c3db0bf..028256a5b 100644
--- a/klp-ui/src/layout/components/Sidebar/index.vue
+++ b/klp-ui/src/layout/components/Sidebar/index.vue
@@ -1,40 +1,123 @@
 <template>
     <div :class="{'has-logo':showLogo}" :style="{ backgroundColor: '#fff' }">
         <logo v-if="showLogo" :collapse="isCollapse" />
+        <el-popover
+            v-model="sectionPopoverVisible"
+            placement="bottom-start"
+            width="320"
+            trigger="click"
+            popper-class="top-menu-popper"
+            :disabled="topMenuList.length === 0"
+        >
+            <div class="top-menu-grid">
+                <div
+                    v-for="menu in topMenuList"
+                    :key="menu.path"
+                    class="top-menu-card"
+                    :class="{ 'is-active': menu.path === activeTopMenu }"
+                    @click="selectTopMenu(menu)"
+                >
+                    <div class="top-menu-card-icon">
+                        <svg-icon v-if="menu.meta && menu.meta.icon" :icon-class="menu.meta.icon" class="top-menu-icon" />
+                    </div>
+                    <span class="top-menu-title">{{ (menu.meta && menu.meta.title) || menu.name }}</span>
+                </div>
+            </div>
+            <div slot="reference" class="sidebar-section-title" :class="{ 'is-collapse': isCollapse }">
+                <div class="section-title-inner">
+                    <div class="section-icon">
+                        <svg-icon v-if="activeTopMenuIcon" :icon-class="activeTopMenuIcon" />
+                        <img v-else :src="logoImg" class="section-logo" />
+                    </div>
+                    <span v-if="activeTopMenuTitle" class="section-module">{{ activeTopMenuTitle }}</span>
+                    <i class="el-icon-arrow-down section-arrow" />
+                </div>
+            </div>
+        </el-popover>
         <el-scrollbar :class="settings.sideTheme" wrap-class="scrollbar-wrapper">
-            <el-menu
-                :default-active="activeMenu"
-                :collapse="isCollapse"
-                background-color="#fff"
-                text-color="#111"
-                :unique-opened="true"
-                active-text-color="#111"
-                :collapse-transition="false"
-                mode="vertical"
-            >
-                <sidebar-item
-                    v-for="(route, index) in sidebarRouters"
-                    :key="route.path  + index"
-                    :item="route"
-                    :base-path="route.path"
-                />
-            </el-menu>
+            <transition name="sidebar-menu-fade" mode="out-in">
+                <el-menu
+                    :key="activeTopMenuPath"
+                    :default-active="activeMenu"
+                    :collapse="isCollapse"
+                    background-color="#fff"
+                    text-color="#111"
+                    :unique-opened="true"
+                    active-text-color="#111"
+                    :collapse-transition="false"
+                    mode="vertical"
+                >
+                    <sidebar-item
+                        v-for="(route, index) in currentSidebarRouters"
+                        :key="route.path + index"
+                        :item="route"
+                        :base-path="resolveRootBasePath(route.path)"
+                    />
+                </el-menu>
+            </transition>
         </el-scrollbar>
     </div>
 </template>
 
 <script>
 import path from 'path'
-import { mapGetters, mapState } from "vuex";
+import { mapState } from "vuex";
 import Logo from "./Logo";
 import SidebarItem from "./SidebarItem";
 import variables from "@/assets/styles/variables.scss";
+import logoImg from '@/assets/logo/logo.png'
 
 export default {
     components: { SidebarItem, Logo },
+    data() {
+        return {
+            logoImg,
+            sectionPopoverVisible: false
+        }
+    },
     computed: {
         ...mapState(["settings"]),
-        ...mapGetters(["sidebarRouters", "sidebar"]),
+        topMenuList() {
+            return this.$store.state.permission.topMenuList.filter(m => !m.hidden)
+        },
+        activeTopMenu() {
+            return this.$store.state.permission.activeTopMenu
+        },
+        storeTopMenuList() {
+            return this.$store.state.permission.topMenuList
+        },
+        activeTopMenuPath() {
+            const topMenus = this.$store.state.permission.topMenuList
+            const activeTop = this.$store.state.permission.activeTopMenu
+            const menu = topMenus.find(m => m.path === activeTop)
+            return menu ? menu.path : ''
+        },
+        activeTopMenuTitle() {
+            const topMenus = this.$store.state.permission.topMenuList
+            const activeTop = this.$store.state.permission.activeTopMenu
+            const menu = topMenus.find(m => m.path === activeTop)
+            return menu ? ((menu.meta && menu.meta.title) || menu.name) : ''
+        },
+        activeTopMenuIcon() {
+            const topMenus = this.$store.state.permission.topMenuList
+            const activeTop = this.$store.state.permission.activeTopMenu
+            const menu = topMenus.find(m => m.path === activeTop)
+            return (menu && menu.meta && menu.meta.icon) || ''
+        },
+        currentSidebarRouters() {
+            const topMenus = this.$store.state.permission.topMenuList
+            const activeTop = this.$store.state.permission.activeTopMenu
+            if (!activeTop) {
+                const firstMenu = topMenus.find(m => !m.hidden)
+                if (firstMenu) {
+                    return firstMenu.children ? firstMenu.children.filter(c => !c.hidden) : []
+                }
+                return []
+            }
+            const menu = topMenus.find(m => m.path === activeTop)
+            if (!menu || !menu.children) return []
+            return menu.children.filter(c => !c.hidden)
+        },
         activeMenu() {
             const route = this.$route;
             const { meta, path: routePath } = route;
@@ -54,12 +137,73 @@ export default {
             return variables;
         },
         isCollapse() {
-            return !this.sidebar.opened;
+            return !this.$store.state.app.sidebar.opened;
+        }
+    },
+    watch: {
+        $route: {
+            immediate: true,
+            handler(newRoute) {
+                this.autoSelectTopMenu(newRoute.path)
+            }
+        },
+        storeTopMenuList: {
+            handler() {
+                if (this.$route) {
+                    this.autoSelectTopMenu(this.$route.path)
+                }
+            }
         }
     },
     methods: {
+        selectTopMenu(menu) {
+            if (this.activeTopMenu === menu.path) {
+                this.sectionPopoverVisible = false
+                return
+            }
+            this.$store.dispatch('selectTopMenu', menu.path)
+            this.$router.push('/')
+            this.$nextTick(() => {
+                this.sectionPopoverVisible = false
+            })
+        },
+        autoSelectTopMenu(currentPath) {
+            const topMenus = this.$store.state.permission.topMenuList
+            if (topMenus.length === 0) return
+            const activeTop = this.$store.state.permission.activeTopMenu
+
+            if (activeTop) {
+                const currentMenu = topMenus.find(m => m.path === activeTop)
+                if (currentMenu) {
+                    this.$store.dispatch('selectTopMenu', activeTop)
+                    if (currentPath === currentMenu.path || currentPath.startsWith(currentMenu.path + '/')) {
+                        return
+                    }
+                }
+            }
+
+            for (const menu of topMenus) {
+                if (menu.hidden) continue
+                if (currentPath === menu.path || currentPath.startsWith(menu.path + '/')) {
+                    this.$store.dispatch('selectTopMenu', menu.path)
+                    return
+                }
+            }
+            if (!activeTop) {
+                const firstMenu = topMenus.find(m => !m.hidden)
+                if (firstMenu) {
+                    this.$store.dispatch('selectTopMenu', firstMenu.path)
+                }
+            }
+        },
+        resolveRootBasePath(routePath) {
+            if (routePath && routePath.startsWith('/')) return routePath
+            const parentPath = this.activeTopMenuPath
+            if (!parentPath) return routePath
+            return path.resolve(parentPath, routePath)
+        },
         findLevel2Parent(currentPath) {
-            return this.walkTree(this.sidebarRouters, currentPath, 0, '');
+            return this.walkTree(this.currentSidebarRouters, currentPath, 0, this.activeTopMenuPath);
         },
         walkTree(routes, currentPath, depth, basePath) {
             for (const route of routes) {
@@ -82,3 +226,161 @@ export default {
     },
 };
 </script>
+
+<style lang="scss" scoped>
+.sidebar-section-title {
+    height: 50px;
+    padding: 0 12px;
+    background: #fafafa;
+    border-bottom: 1px solid #f0f0f0;
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    transition: background 0.2s;
+
+    &:hover {
+        background: #f0f0f0;
+    }
+
+    .section-title-inner {
+        display: flex;
+        align-items: center;
+        width: 100%;
+        overflow: hidden;
+    }
+
+    .section-logo {
+        width: 28px;
+        height: 28px;
+        flex-shrink: 0;
+        margin-right: 10px;
+    }
+
+    .section-icon {
+        width: 32px;
+        height: 32px;
+        flex-shrink: 0;
+        margin-right: 8px;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        font-size: 26px;
+        color: #555;
+
+        .section-logo {
+            width: 32px;
+            height: 32px;
+        }
+    }
+
+    .section-module {
+        flex: 1;
+        min-width: 0;
+        font-size: 14px;
+        font-weight: 600;
+        color: #333;
+        white-space: nowrap;
+        overflow: hidden;
+        text-overflow: ellipsis;
+    }
+
+    .section-arrow {
+        flex-shrink: 0;
+        font-size: 12px;
+        color: #999;
+        margin-left: 4px;
+        transition: transform 0.2s;
+    }
+
+    &.is-collapse {
+        padding: 0 6px;
+        justify-content: center;
+
+        .section-icon {
+            margin-right: 0;
+        }
+
+        .section-title-right,
+        .section-arrow {
+            display: none;
+        }
+    }
+}
+
+.sidebar-menu-fade-enter-active,
+.sidebar-menu-fade-leave-active {
+    transition: opacity 0.15s ease;
+}
+
+.sidebar-menu-fade-enter,
+.sidebar-menu-fade-leave-to {
+    opacity: 0;
+}
+</style>
+
+<style lang="scss">
+.top-menu-popper {
+    padding: 16px 12px;
+
+    .top-menu-grid {
+        display: grid;
+        grid-template-columns: repeat(3, 1fr);
+        gap: 12px;
+
+        .top-menu-card {
+            display: flex;
+            flex-direction: column;
+            align-items: center;
+            padding: 14px 8px;
+            border-radius: 8px;
+            cursor: pointer;
+            transition: all 0.2s ease;
+            color: #555;
+
+            &:hover {
+                background: rgba(0, 0, 0, 0.04);
+                color: #111;
+            }
+
+            &.is-active {
+                color: var(--current-color, #409EFF);
+                background: rgba(64, 158, 255, 0.06);
+
+                .top-menu-card-icon {
+                    background: var(--current-color, #409EFF);
+                    box-shadow: 0 2px 8px rgba(64, 158, 255, 0.3);
+                }
+
+                .top-menu-icon {
+                    color: #fff;
+                }
+            }
+
+            .top-menu-card-icon {
+                width: 48px;
+                height: 48px;
+                border-radius: 12px;
+                background: #f5f5f5;
+                display: flex;
+                align-items: center;
+                justify-content: center;
+                margin-bottom: 8px;
+                transition: all 0.2s ease;
+
+                .top-menu-icon {
+                    font-size: 24px;
+                    color: #666;
+                    transition: color 0.2s ease;
+                }
+            }
+
+            .top-menu-title {
+                font-size: 12px;
+                text-align: center;
+                line-height: 1.4;
+                word-break: break-all;
+            }
+        }
+    }
+}
+</style>
diff --git a/klp-ui/src/layout/components/SubNav.vue b/klp-ui/src/layout/components/SubNav.vue
index 424d4eef3..b18e123fa 100644
--- a/klp-ui/src/layout/components/SubNav.vue
+++ b/klp-ui/src/layout/components/SubNav.vue
@@ -61,8 +61,16 @@ export default {
   computed: {
     subNavItems() {
       const sidebarRouters = this.$store.state.permission.sidebarRouters
-      const items = this.getThirdLevelMenus(sidebarRouters)
-      return items
+      const activeTop = this.$store.state.permission.activeTopMenu
+      const topMenus = this.$store.state.permission.topMenuList
+      const menu = topMenus.find(m => m.path === activeTop)
+      const basePath = menu ? menu.path : ''
+
+      let currentPath = this.$route.path
+      if (currentPath === '/redirect/subMenu' && this.$route.query.parent) {
+        currentPath = this.$route.query.parent
+      }
+      return this.findActiveLevel2(sidebarRouters, currentPath, 0, basePath) || []
     },
     hasItems() {
       return this.subNavItems.length > 0
@@ -108,13 +116,6 @@ export default {
     isChildActive(child) {
       return this.$route.path === child._ownPath || this.$route.path.startsWith(child._ownPath + '/')
     },
-    getThirdLevelMenus(routes) {
-      let currentPath = this.$route.path
-      if (currentPath === '/redirect/subMenu' && this.$route.query.parent) {
-        currentPath = this.$route.query.parent
-      }
-      return this.findActiveLevel2(routes, currentPath, 0, '') || []
-    },
     findActiveLevel2(routes, currentPath, depth, basePath) {
       for (const route of routes) {
         if (route.hidden) continue
diff --git a/klp-ui/src/store/getters.js b/klp-ui/src/store/getters.js
index 1fbd69ec1..3437c1648 100644
--- a/klp-ui/src/store/getters.js
+++ b/klp-ui/src/store/getters.js
@@ -18,6 +18,8 @@ const getters = {
   topbarRouters:state => state.permission.topbarRouters,
   defaultRoutes:state => state.permission.defaultRoutes,
   sidebarRouters:state => state.permission.sidebarRouters,
+  topMenuList: state => state.permission.topMenuList,
+  activeTopMenu: state => state.permission.activeTopMenu,
   productList: state => state.category.productList,
   rawMaterialList: state => state.category.rawMaterialList,
   bomMap: state => state.category.bomMap,
diff --git a/klp-ui/src/store/modules/permission.js b/klp-ui/src/store/modules/permission.js
index 228766550..5d11f93ae 100644
--- a/klp-ui/src/store/modules/permission.js
+++ b/klp-ui/src/store/modules/permission.js
@@ -4,6 +4,7 @@ import { getRouters } from '@/api/menu'
 import Layout from '@/layout/index'
 import ParentView from '@/components/ParentView'
 import InnerLink from '@/layout/components/InnerLink'
+import Cookies from 'js-cookie'
 
 const permission = {
   state: {
@@ -11,7 +12,9 @@ const permission = {
     addRoutes: [],
     defaultRoutes: [],
     topbarRouters: [],
-    sidebarRouters: []
+    sidebarRouters: [],
+    topMenuList: [],
+    activeTopMenu: Cookies.get('activeTopMenu') || ''
   },
   mutations: {
     SET_ROUTES: (state, routes) => {
@@ -27,6 +30,13 @@ const permission = {
     SET_SIDEBAR_ROUTERS: (state, routes) => {
       state.sidebarRouters = routes
     },
+    SET_TOP_MENU_LIST: (state, menus) => {
+      state.topMenuList = menus
+    },
+    SET_ACTIVE_TOP_MENU: (state, path) => {
+      state.activeTopMenu = path
+      Cookies.set('activeTopMenu', path)
+    },
   },
   actions: {
     // 生成路由
@@ -45,9 +55,19 @@ const permission = {
           commit('SET_SIDEBAR_ROUTERS', constantRoutes.concat(sidebarRoutes))
           commit('SET_DEFAULT_ROUTES', sidebarRoutes)
           commit('SET_TOPBAR_ROUTES', sidebarRoutes)
+          commit('SET_TOP_MENU_LIST', sidebarRoutes)
           resolve(rewriteRoutes)
         })
       })
+    },
+
+    selectTopMenu({ commit, state }, menuPath) {
+      const menu = state.topMenuList.find(m => m.path === menuPath)
+      if (menu) {
+        commit('SET_ACTIVE_TOP_MENU', menuPath)
+        const children = menu.children ? menu.children.filter(c => !c.hidden) : []
+        commit('SET_SIDEBAR_ROUTERS', constantRoutes.concat(children))
+      }
     }
   }
 }
diff --git a/klp-ui/src/views/system/menu/index.vue b/klp-ui/src/views/system/menu/index.vue
index 483cc77dd..6c2fe9395 100644
--- a/klp-ui/src/views/system/menu/index.vue
+++ b/klp-ui/src/views/system/menu/index.vue
@@ -100,6 +100,13 @@
             @click="handleAdd(scope.row)"
             v-hasPermi="['system:menu:add']"
           >新增</el-button>
+          <el-button
+            size="mini"
+            type="text"
+            icon="el-icon-document-copy"
+            @click="handleCopyAdd(scope.row)"
+            v-hasPermi="['system:menu:add']"
+          >复制新增</el-button>
           <el-button
             size="mini"
             type="text"
@@ -410,6 +417,17 @@ export default {
       this.open = true;
       this.title = "添加菜单";
     },
+    /** 复制新增按钮操作：将当前菜单信息填入新增弹窗 */
+    handleCopyAdd(row) {
+      this.reset();
+      this.getTreeselect();
+      // 直接使用当前行数据拷贝给表单，不拷贝 menuId 确保提交走新增
+      const data = { ...row };
+      data.menuId = undefined;
+      this.form = data;
+      this.open = true;
+      this.title = "复制新增菜单";
+    },
     /** 展开/折叠操作 */
     toggleExpandAll() {
       this.refreshTable = false;