diff --git a/src/components/Navbars/HomeNavbar.js b/src/components/Navbars/HomeNavbar.js
index 6e65825a..fc2c579e 100644
--- a/src/components/Navbars/HomeNavbar.js
+++ b/src/components/Navbars/HomeNavbar.js
@@ -17,11 +17,9 @@ import {
     IconButton,
     useBreakpointValue,
     Spinner,
-    useColorMode,
-    useColorModeValue,
     useToast,
 } from '@chakra-ui/react';
-import { ChevronDown, Menu as MenuIcon, Sun, Moon, Star, Calendar, User, Settings, Home, LogOut, Crown } from 'lucide-react';
+import { ChevronDown, Menu as MenuIcon, Star, Calendar, User, Settings, Home, LogOut, Crown } from 'lucide-react';
 import { useNavigate, useLocation } from 'react-router-dom';
 import { useAuth } from '../../contexts/AuthContext';
 import { useAuthModal } from '../../hooks/useAuthModal';
@@ -63,11 +61,11 @@ export default function HomeNavbar() {
     const isDesktop = useBreakpointValue({ base: false, md: false, lg: true });
     const { user, isAuthenticated, logout, isLoading } = useAuth();
     const { openAuthModal } = useAuthModal();
-    const { colorMode, toggleColorMode } = useColorMode();
-    const navbarBg = useColorModeValue('white', 'gray.800');
-    const navbarBorder = useColorModeValue('gray.200', 'gray.700');
-    const brandText = useColorModeValue('gray.800', 'white');
-    const brandHover = useColorModeValue('blue.600', 'blue.300');
+    // 导航栏颜色（已移除深色模式支持）
+    const navbarBg = 'white';
+    const navbarBorder = 'gray.200';
+    const brandText = 'gray.800';
+    const brandHover = 'blue.600';
     const toast = useToast();
 
     // 🎯 初始化导航埋点Hook
diff --git a/src/components/Navbars/components/BrandLogo.js b/src/components/Navbars/components/BrandLogo.js
index 0ee1820b..19991f62 100644
--- a/src/components/Navbars/components/BrandLogo.js
+++ b/src/components/Navbars/components/BrandLogo.js
@@ -1,6 +1,6 @@
 // src/components/Navbars/components/BrandLogo.js
 import React, { memo } from 'react';
-import { HStack, Text, useColorModeValue, useBreakpointValue } from '@chakra-ui/react';
+import { HStack, Text, useBreakpointValue } from '@chakra-ui/react';
 import { useNavigate } from 'react-router-dom';
 import { useNavigationEvents } from '../../../hooks/useNavigationEvents';
 
@@ -16,8 +16,9 @@ import { useNavigationEvents } from '../../../hooks/useNavigationEvents';
 const BrandLogo = memo(() => {
     const navigate = useNavigate();
     const isMobile = useBreakpointValue({ base: true, md: false });
-    const brandText = useColorModeValue('gray.800', 'white');
-    const brandHover = useColorModeValue('blue.600', 'blue.300');
+    // 品牌文字颜色（已移除深色模式支持）
+    const brandText = 'gray.800';
+    const brandHover = 'blue.600';
 
     // 🎯 初始化导航埋点Hook
     const navEvents = useNavigationEvents({ component: 'brand_logo' });
diff --git a/src/components/Navbars/components/Navigation/DesktopNav.js b/src/components/Navbars/components/Navigation/DesktopNav.js
index 91154cb4..e644c804 100644
--- a/src/components/Navbars/components/Navigation/DesktopNav.js
+++ b/src/components/Navbars/components/Navigation/DesktopNav.js
@@ -15,7 +15,6 @@ import {
     Badge,
     Image,
     Box,
-    useColorModeValue
 } from '@chakra-ui/react';
 import { ChevronDown } from 'lucide-react';
 import { useNavigate, useLocation } from 'react-router-dom';
@@ -34,8 +33,16 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
     const navigate = useNavigate();
     const location = useLocation();
 
-    // ⚠️ 必须在组件顶层调用所有Hooks（不能在JSX中调用）
-    const contactTextColor = useColorModeValue('gray.500', 'gray.300');
+    // 导航颜色（已移除深色模式支持）
+    const contactTextColor = 'gray.500';
+    const menuTextColor = 'gray.700'; // 菜单按钮文字颜色
+
+    // MenuItem 通用样式（强制浅色主题）
+    const menuItemStyle = {
+        color: 'gray.700',
+        _hover: { bg: 'gray.100', color: 'gray.900' },
+        _focus: { bg: 'gray.100', color: 'gray.900' },
+    };
 
     // 🎯 初始化导航埋点Hook
     const navEvents = useNavigationEvents({ component: 'top_nav' });
@@ -62,7 +69,7 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
                     variant="ghost"
                     rightIcon={<ChevronDown size={16} color={isActive(['/community', '/concepts']) ? 'white' : 'currentColor'} />}
                     bg={isActive(['/community', '/concepts']) ? 'blue.600' : 'transparent'}
-                    color={isActive(['/community', '/concepts']) ? 'white' : 'inherit'}
+                    color={isActive(['/community', '/concepts']) ? 'white' : menuTextColor}
                     fontWeight={isActive(['/community', '/concepts']) ? 'bold' : 'normal'}
                     border={isActive(['/community', '/concepts']) ? '2px solid' : 'none'}
                     borderColor={isActive(['/community', '/concepts']) ? 'blue.300' : 'transparent'}
@@ -77,6 +84,9 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
                 <MenuList
                     minW="260px"
                     p={2}
+                    bg="white"
+                    borderColor="gray.200"
+                    boxShadow="lg"
                     onMouseEnter={highFreqMenu.handleMouseEnter}
                     onMouseLeave={highFreqMenu.handleMouseLeave}
                 >
@@ -92,6 +102,7 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
                         borderLeft={location.pathname.includes('/community') ? '3px solid' : 'none'}
                         borderColor="blue.600"
                         fontWeight={location.pathname.includes('/community') ? 'bold' : 'normal'}
+                        {...menuItemStyle}
                     >
                         <Flex justify="space-between" align="center" w="100%">
                             <Text fontSize="sm">事件中心</Text>
@@ -113,6 +124,7 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
                         borderLeft={location.pathname.includes('/concepts') ? '3px solid' : 'none'}
                         borderColor="blue.600"
                         fontWeight={location.pathname.includes('/concepts') ? 'bold' : 'normal'}
+                        {...menuItemStyle}
                     >
                         <Flex justify="space-between" align="center" w="100%">
                             <Text fontSize="sm">概念中心</Text>
@@ -129,7 +141,7 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
                     variant="ghost"
                     rightIcon={<ChevronDown size={16} color={isActive(['/limit-analyse', '/stocks', '/trading-simulation']) ? 'white' : 'currentColor'} />}
                     bg={isActive(['/limit-analyse', '/stocks', '/trading-simulation']) ? 'blue.600' : 'transparent'}
-                    color={isActive(['/limit-analyse', '/stocks', '/trading-simulation']) ? 'white' : 'inherit'}
+                    color={isActive(['/limit-analyse', '/stocks', '/trading-simulation']) ? 'white' : menuTextColor}
                     fontWeight={isActive(['/limit-analyse', '/stocks', '/trading-simulation']) ? 'bold' : 'normal'}
                     border={isActive(['/limit-analyse', '/stocks', '/trading-simulation']) ? '2px solid' : 'none'}
                     borderColor={isActive(['/limit-analyse', '/stocks', '/trading-simulation']) ? 'blue.300' : 'transparent'}
@@ -144,6 +156,9 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
                 <MenuList
                     minW="260px"
                     p={2}
+                    bg="white"
+                    borderColor="gray.200"
+                    boxShadow="lg"
                     onMouseEnter={marketReviewMenu.handleMouseEnter}
                     onMouseLeave={marketReviewMenu.handleMouseLeave}
                 >
@@ -157,6 +172,7 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
                         borderLeft={location.pathname.includes('/limit-analyse') ? '3px solid' : 'none'}
                         borderColor="blue.600"
                         fontWeight={location.pathname.includes('/limit-analyse') ? 'bold' : 'normal'}
+                        {...menuItemStyle}
                     >
                         <Flex justify="space-between" align="center" w="100%">
                             <Text fontSize="sm">涨停分析</Text>
@@ -173,6 +189,7 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
                         borderLeft={location.pathname.includes('/stocks') ? '3px solid' : 'none'}
                         borderColor="blue.600"
                         fontWeight={location.pathname.includes('/stocks') ? 'bold' : 'normal'}
+                        {...menuItemStyle}
                     >
                         <Flex justify="space-between" align="center" w="100%">
                             <Text fontSize="sm">个股中心</Text>
@@ -185,6 +202,7 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
                         bg="transparent"
                         opacity={0.5}
                         cursor="not-allowed"
+                        {...menuItemStyle}
                     >
                         <Flex justify="space-between" align="center" w="100%">
                             <Text fontSize="sm" color="gray.400">模拟盘</Text>
@@ -201,7 +219,7 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
                     variant="ghost"
                     rightIcon={<ChevronDown size={16} color={isActive(['/agent-chat', '/value-forum']) ? 'white' : 'currentColor'} />}
                     bg={isActive(['/agent-chat', '/value-forum']) ? 'blue.600' : 'transparent'}
-                    color={isActive(['/agent-chat', '/value-forum']) ? 'white' : 'inherit'}
+                    color={isActive(['/agent-chat', '/value-forum']) ? 'white' : menuTextColor}
                     fontWeight={isActive(['/agent-chat', '/value-forum']) ? 'bold' : 'normal'}
                     border={isActive(['/agent-chat', '/value-forum']) ? '2px solid' : 'none'}
                     borderColor={isActive(['/agent-chat', '/value-forum']) ? 'blue.300' : 'transparent'}
@@ -216,6 +234,9 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
                 <MenuList
                     minW="300px"
                     p={2}
+                    bg="white"
+                    borderColor="gray.200"
+                    boxShadow="lg"
                     onMouseEnter={agentCommunityMenu.handleMouseEnter}
                     onMouseLeave={agentCommunityMenu.handleMouseLeave}
                 >
@@ -231,6 +252,7 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
                         borderLeft={location.pathname.includes('/agent-chat') ? '3px solid' : 'none'}
                         borderColor="blue.600"
                         fontWeight={location.pathname.includes('/agent-chat') ? 'bold' : 'normal'}
+                        {...menuItemStyle}
                     >
                         <Flex justify="space-between" align="center" w="100%">
                             <Text fontSize="sm">AI聊天助手</Text>
@@ -250,6 +272,7 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
                         borderLeft={location.pathname.includes('/value-forum') ? '3px solid' : 'none'}
                         borderColor="blue.600"
                         fontWeight={location.pathname.includes('/value-forum') ? 'bold' : 'normal'}
+                        {...menuItemStyle}
                     >
                         <Flex justify="space-between" align="center" w="100%">
                             <Text fontSize="sm">价值论坛</Text>
@@ -263,6 +286,7 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
                         isDisabled
                         cursor="not-allowed"
                         color="gray.400"
+                        {...menuItemStyle}
                     >
                         <Text fontSize="sm" color="gray.400">个股社区</Text>
                     </MenuItem>
@@ -274,7 +298,9 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
                 <MenuButton
                     as={Button}
                     variant="ghost"
+                    color={menuTextColor}
                     rightIcon={<ChevronDown size={16} />}
+                    _hover={{ bg: 'gray.50' }}
                     onMouseEnter={contactUsMenu.handleMouseEnter}
                     onMouseLeave={contactUsMenu.handleMouseLeave}
                     onClick={contactUsMenu.handleClick}
@@ -284,6 +310,9 @@ const DesktopNav = memo(({ isAuthenticated, user }) => {
                 <MenuList
                     minW="340px"
                     p={4}
+                    bg="white"
+                    borderColor="gray.200"
+                    boxShadow="lg"
                     onMouseEnter={contactUsMenu.handleMouseEnter}
                     onMouseLeave={contactUsMenu.handleMouseLeave}
                 >