diff --git a/app/user_data/2026_03_27.log b/app/user_data/2026_03_27.log
index 7ea250d..357883d 100644
--- a/app/user_data/2026_03_27.log
+++ b/app/user_data/2026_03_27.log
@@ -719,3 +719,15 @@ Traceback (most recent call last):
     value = func(*args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^
 TypeError: WindowAPI.__init__.<locals>.<lambda>() missing 1 required positional argument: '_'
+[pywebview] WindowAPI.__init__.<locals>.<lambda>() missing 1 required positional argument: '_'
+Traceback (most recent call last):
+  File "C:\Users\���\AppData\Local\Programs\Python\Python312\Lib\site-packages\webview\event.py", line 45, in execute
+    value = func(*args, **kwargs)
+            ^^^^^^^^^^^^^^^^^^^^^
+TypeError: WindowAPI.__init__.<locals>.<lambda>() missing 1 required positional argument: '_'
+[pywebview] WindowAPI.__init__.<locals>.<lambda>() missing 1 required positional argument: '_'
+Traceback (most recent call last):
+  File "C:\Users\���\AppData\Local\Programs\Python\Python312\Lib\site-packages\webview\event.py", line 45, in execute
+    value = func(*args, **kwargs)
+            ^^^^^^^^^^^^^^^^^^^^^
+TypeError: WindowAPI.__init__.<locals>.<lambda>() missing 1 required positional argument: '_'
diff --git a/app/web_source/brand.html b/app/web_source/brand.html
index 430936b..92372a0 100644
--- a/app/web_source/brand.html
+++ b/app/web_source/brand.html
@@ -56,47 +56,96 @@
             background: #2a2a2a;
         }
 
-        /* 顶部栏目导航（容器化，便于后续增加栏目） */
         .nav-tabs {
             display: flex;
             align-items: center;
-            gap: 0;
+            gap: 12px;
         }
 
         .nav-tab-group {
             display: flex;
             align-items: center;
-            gap: 6px;
-            background: rgba(77, 72, 72, 0.99);
+            gap: 12px;
+        }
+
+        .nav-dropdown {
+            position: relative;
+        }
+
+        .nav-dropdown-trigger {
+            display: inline-flex;
+            align-items: center;
+            justify-content: center;
+            gap: 8px;
+            min-width: 112px;
+            height: 38px;
+            padding: 0 16px;
             border-radius: 10px;
-        }
-
-        .nav-tab-sep {
-            width: 1px;
-            height: 20px;
-            background: linear-gradient(to bottom, transparent, #444 15%, #444 85%, transparent);
-            margin: 0 10px;
-            flex-shrink: 0;
-            opacity: 0.9;
-        }
-
-        .nav-tab {
-            padding: 8px 14px;
-            font-size: 13px;
+            border: 1px solid transparent;
             color: #999;
             background: transparent;
-            border: none;
-            border-radius: 6px;
+            font-size: 13px;
+            font-weight: 600;
             cursor: pointer;
-            transition: all 0.2s;
+            transition: all 0.2s ease;
         }
 
-        .nav-tab:hover {
+        .nav-dropdown:hover .nav-dropdown-trigger,
+        .nav-dropdown.active .nav-dropdown-trigger {
             color: #fff;
             background: #2a2a2a;
         }
 
-        .nav-tab.active {
+        .nav-dropdown.active .nav-dropdown-trigger {
+            color: #3498db;
+            background: rgba(52, 152, 219, 0.2);
+            border-color: rgba(52, 152, 219, 0.3);
+        }
+
+        .nav-dropdown-arrow {
+            font-size: 11px;
+            line-height: 1;
+        }
+
+        .nav-dropdown-menu {
+            position: absolute;
+            top: calc(100% + 8px);
+            left: 0;
+            min-width: 220px;
+            padding: 8px;
+            border: 1px solid #2a2a2a;
+            border-radius: 12px;
+            background: #171717;
+            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
+            display: none;
+            z-index: 20;
+        }
+
+        .nav-dropdown:hover .nav-dropdown-menu {
+            display: flex;
+            flex-direction: column;
+            gap: 4px;
+        }
+
+        .nav-dropdown-item {
+            display: flex;
+            align-items: center;
+            min-height: 38px;
+            padding: 0 12px;
+            border-radius: 8px;
+            color: #b8b8b8;
+            font-size: 13px;
+            font-weight: 600;
+            text-decoration: none;
+            transition: all 0.2s ease;
+        }
+
+        .nav-dropdown-item:hover {
+            color: #fff;
+            background: #2a2a2a;
+        }
+
+        .nav-dropdown-item.active {
             color: #3498db;
             background: rgba(52, 152, 219, 0.2);
         }
@@ -597,16 +646,29 @@
             <a href="/home" class="btn-home">返回首页</a>
         </div>
         <nav class="nav-tabs">
-            <span class="nav-tab-group">
-                <button type="button" class="nav-tab active" data-panel="brandCheck">品牌检测</button>
-                <button type="button" class="nav-tab"
-                    onclick="window.location='/new_web_source/dedupe.html'">总数据去重</button>
-                <button type="button" class="nav-tab"
-                    onclick="window.location='/new_web_source/convert.html'">格式转换</button>
-                <button type="button" class="nav-tab"
-                    onclick="window.location='/new_web_source/split.html'">表格拆分</button>
-            </span>
-            <!-- 多组栏目时可用分隔符：<span class="nav-tab-sep" aria-hidden="true"></span> -->
+            <div class="nav-tab-group">
+                <div class="nav-dropdown active">
+                    <button type="button" class="nav-dropdown-trigger">
+                        <span>前端工具</span>
+                        <span class="nav-dropdown-arrow">▾</span>
+                    </button>
+                    <div class="nav-dropdown-menu">
+                        <button type="button" class="nav-dropdown-item active" data-panel="brandCheck">品牌检测</button>
+                        <a class="nav-dropdown-item" href="/new_web_source/dedupe.html">数据去重</a>
+                        <a class="nav-dropdown-item" href="/new_web_source/split.html">数据拆分</a>
+                        <a class="nav-dropdown-item" href="/new_web_source/convert.html">格式转换</a>
+                    </div>
+                </div>
+                <div class="nav-dropdown">
+                    <button type="button" class="nav-dropdown-trigger">
+                        <span>运营工具</span>
+                        <span class="nav-dropdown-arrow">▾</span>
+                    </button>
+                    <div class="nav-dropdown-menu">
+                        <a class="nav-dropdown-item" href="/new_web_source/delete-brand.html">删除指定ASIN和品牌</a>
+                    </div>
+                </div>
+            </div>
         </nav>
         <div class="top-right"></div>
     </header>
@@ -739,12 +801,12 @@
             var cachedTasks = [];
             var api = window.pywebview && window.pywebview.api;
 
-            // 顶部栏目切换：点击 nav-tab 时显示对应 data-panel 的 tab-panel
-            document.querySelectorAll('.nav-tab').forEach(function (tab) {
+            // 顶部栏目切换：点击当前页菜单项时显示对应 data-panel 的 tab-panel
+            document.querySelectorAll('.nav-dropdown-item[data-panel]').forEach(function (tab) {
                 tab.addEventListener('click', function () {
                     var panelId = this.getAttribute('data-panel');
                     if (!panelId) return;
-                    document.querySelectorAll('.nav-tab').forEach(function (t) { t.classList.remove('active'); });
+                    document.querySelectorAll('.nav-dropdown-item[data-panel]').forEach(function (t) { t.classList.remove('active'); });
                     document.querySelectorAll('.tab-panel').forEach(function (p) {
                         p.classList.toggle('active', p.getAttribute('data-panel') === panelId);
                     });
diff --git a/frontend-vue/src/pages/brand/components/BrandTopBar.vue b/frontend-vue/src/pages/brand/components/BrandTopBar.vue
index ccfda6b..5e0b4ae 100644
--- a/frontend-vue/src/pages/brand/components/BrandTopBar.vue
+++ b/frontend-vue/src/pages/brand/components/BrandTopBar.vue
@@ -6,12 +6,30 @@
     </div>
 
     <nav class="nav-tabs">
-      <span class="nav-tab-group">
-        <a v-for="item in navItems" :key="item.key" :href="item.href" class="nav-tab"
-          :class="{ active: active === item.key }">
-          {{ item.label }}
-        </a>
-      </span>
+      <div class="nav-tab-group">
+        <div
+          v-for="group in navGroups"
+          :key="group.label"
+          class="nav-dropdown"
+          :class="{ active: group.items.some(item => item.key === active) }"
+        >
+          <button type="button" class="nav-dropdown-trigger">
+            <span>{{ group.label }}</span>
+            <span class="nav-dropdown-arrow">▾</span>
+          </button>
+          <div class="nav-dropdown-menu">
+            <a
+              v-for="item in group.items"
+              :key="item.key"
+              :href="item.href"
+              class="nav-dropdown-item"
+              :class="{ active: active === item.key }"
+            >
+              {{ item.label }}
+            </a>
+          </div>
+        </div>
+      </div>
     </nav>
 
     <div class="top-right"></div>
@@ -25,12 +43,22 @@ const props = defineProps<{
 
 const active = props.active
 
-const navItems = [
-  { key: 'brand', label: '品牌检测', href: '/brand' },
-  { key: 'dedupe', label: '数据去重', href: '/new_web_source/dedupe.html' },
-  { key: 'split', label: '数据拆分', href: '/new_web_source/split.html' },
-  { key: 'convert', label: '格式转换', href: '/new_web_source/convert.html' },
-  { key: 'delete-brand', label: '删除品牌', href: '/new_web_source/delete-brand.html' },
+const navGroups = [
+  {
+    label: '前端工具',
+    items: [
+      { key: 'brand', label: '品牌检测', href: '/brand' },
+      { key: 'dedupe', label: '数据去重', href: '/new_web_source/dedupe.html' },
+      { key: 'split', label: '数据拆分', href: '/new_web_source/split.html' },
+      { key: 'convert', label: '格式转换', href: '/new_web_source/convert.html' },
+    ],
+  },
+  {
+    label: '运营工具',
+    items: [
+      { key: 'delete-brand', label: '删除指定ASIN和品牌', href: '/new_web_source/delete-brand.html' },
+    ],
+  },
 ] as const
 </script>
 
@@ -86,11 +114,16 @@ const navItems = [
   justify-content: center;
 }
 
-.nav-tab {
+.nav-dropdown {
+  position: relative;
+}
+
+.nav-dropdown-trigger {
   display: inline-flex;
   align-items: center;
   justify-content: center;
-  min-width: 92px;
+  gap: 8px;
+  min-width: 112px;
   height: 38px;
   padding: 0 16px;
   border-radius: 10px;
@@ -99,21 +132,70 @@ const navItems = [
   background: transparent;
   font-size: 13px;
   font-weight: 600;
-  text-decoration: none;
+  cursor: pointer;
   transition: all 0.2s ease;
 }
 
-.nav-tab:hover {
+.nav-dropdown:hover .nav-dropdown-trigger,
+.nav-dropdown.active .nav-dropdown-trigger {
   color: #b9d6ff;
   background: rgba(77, 126, 189, 0.14);
 }
 
-.nav-tab.active {
+.nav-dropdown.active .nav-dropdown-trigger {
   background: rgba(77, 126, 189, 0.24);
   border-color: rgba(91, 148, 219, 0.35);
   color: #6caeff;
 }
 
+.nav-dropdown-arrow {
+  font-size: 11px;
+  line-height: 1;
+}
+
+.nav-dropdown-menu {
+  position: absolute;
+  top: calc(100% + 8px);
+  left: 0;
+  min-width: 220px;
+  padding: 8px;
+  border: 1px solid #2a2a2a;
+  border-radius: 12px;
+  background: #171717;
+  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
+  display: none;
+  z-index: 20;
+}
+
+.nav-dropdown:hover .nav-dropdown-menu {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+
+.nav-dropdown-item {
+  display: flex;
+  align-items: center;
+  min-height: 38px;
+  padding: 0 12px;
+  border-radius: 8px;
+  color: #b8b8b8;
+  font-size: 13px;
+  font-weight: 600;
+  text-decoration: none;
+  transition: all 0.2s ease;
+}
+
+.nav-dropdown-item:hover {
+  color: #e8f2ff;
+  background: rgba(77, 126, 189, 0.14);
+}
+
+.nav-dropdown-item.active {
+  color: #6caeff;
+  background: rgba(77, 126, 189, 0.24);
+}
+
 .top-right {
   width: 120px;
   flex-shrink: 0;
@@ -132,6 +214,16 @@ const navItems = [
     justify-content: flex-start;
   }
 
+  .nav-tab-group {
+    width: 100%;
+    justify-content: flex-start;
+  }
+
+  .nav-dropdown-menu {
+    left: 0;
+    right: auto;
+  }
+
   .top-right {
     display: none;
   }