feat: 路由改造

src/views/Concept/index.js

@@ -83,8 +83,7 @@ import { BsGraphUp, BsLightningFill } from 'react-icons/bs';
 import { keyframes } from '@emotion/react';
 import ConceptTimelineModal from './ConceptTimelineModal';
 import ConceptStatsPanel from './components/ConceptStatsPanel';
-// 导入导航栏组件
-import HomeNavbar from '../../components/Navbars/HomeNavbar';
+// 导航栏已由 MainLayout 提供，无需在此导入
 // 导入订阅权限管理
 import { useSubscription } from '../../hooks/useSubscription';
 import SubscriptionUpgradeModal from '../../components/SubscriptionUpgradeModal';
@@ -1080,8 +1079,7 @@ const ConceptCenter = () => {
 
     return (
         <Box minH="100vh" bg="gray.50">
-            {/* 导航栏 */}
-            <HomeNavbar />
+            {/* 导航栏已由 MainLayout 提供 */}
 
             {/* Hero Section */}
             <Box