fix：优化h5/菜单UI

src/components/Navbars/HomeNavbar.js

@@ -167,20 +167,14 @@ export default function HomeNavbar() {
                         <BrandLogo />
 
                         {/* 中间导航区域 - 响应式 (Phase 4 优化) */}
-                        {isMobile ? (
+                        {!isMobile && (
-                            // 移动端：汉堡菜单
+                            isTablet ? (
-                            <IconButton
-                                icon={<HamburgerIcon />}
-                                variant="ghost"
-                                onClick={onOpen}
-                                aria-label="Open menu"
-                            />
-                        ) : isTablet ? (
                                 // 中屏（平板）："更多"下拉菜单
                                 <MoreMenu isAuthenticated={isAuthenticated} user={user} />
                             ) : (
                                 // 大屏（桌面）：完整导航菜单
                                 <DesktopNav isAuthenticated={isAuthenticated} user={user} />
+                            )
                         )}
 
                         {/* 右侧功能区 (Phase 7 优化) */}
@@ -189,6 +183,8 @@ export default function HomeNavbar() {
                             isAuthenticated={isAuthenticated}
                             user={user}
                             isDesktop={isDesktop}
+                            isMobile={isMobile}
+                            onMenuOpen={onOpen}
                             handleLogout={handleLogout}
                             watchlistQuotes={watchlistQuotes}
                             followingEvents={followingEvents}

src/components/Navbars/components/NavbarActions/index.js

@@ -2,7 +2,8 @@
 // Navbar 右侧功能区组件
 
 import React, { memo } from 'react';
-import { HStack, Spinner } from '@chakra-ui/react';
+import { HStack, Spinner, IconButton } from '@chakra-ui/react';
+import { HamburgerIcon } from '@chakra-ui/icons';
 import ThemeToggleButton from '../ThemeToggleButton';
 import LoginButton from '../LoginButton';
 import CalendarButton from '../CalendarButton';
@@ -19,6 +20,8 @@ import { PersonalCenterMenu } from '../Navigation';
  * @param {boolean} props.isAuthenticated - 是否已登录
  * @param {Object} props.user - 用户对象
  * @param {boolean} props.isDesktop - 是否为桌面端
+ * @param {boolean} props.isMobile - 是否为移动端
+ * @param {Function} props.onMenuOpen - 打开移动端菜单的回调
  * @param {Function} props.handleLogout - 登出回调
  * @param {Array} props.watchlistQuotes - 自选股数据（用于 TabletUserMenu）
  * @param {Array} props.followingEvents - 关注事件数据（用于 TabletUserMenu）
@@ -28,6 +31,8 @@ const NavbarActions = memo(({
     isAuthenticated,
     user,
     isDesktop,
+    isMobile,
+    onMenuOpen,
     handleLogout,
     watchlistQuotes,
     followingEvents
@@ -64,14 +69,38 @@ const NavbarActions = memo(({
                         />
                     )}
 
+                    {/* 移动端汉堡菜单 - 在头像右侧 */}
+                    {isMobile && (
+                        <IconButton
+                            icon={<HamburgerIcon />}
+                            variant="ghost"
+                            onClick={onMenuOpen}
+                            aria-label="打开菜单"
+                            size="md"
+                        />
+                    )}
+
                     {/* 个人中心下拉菜单 - 仅大屏显示 */}
                     {isDesktop && (
                         <PersonalCenterMenu user={user} handleLogout={handleLogout} />
                     )}
                 </HStack>
             ) : (
-                // 未登录状态 - 单一按钮
+                // 未登录状态 - 登录按钮 + 汉堡菜单
+                <HStack spacing={{ base: 2, md: 4 }}>
                     <LoginButton />
+
+                    {/* 移动端汉堡菜单 - 未登录时也显示 */}
+                    {isMobile && (
+                        <IconButton
+                            icon={<HamburgerIcon />}
+                            variant="ghost"
+                            onClick={onMenuOpen}
+                            aria-label="打开菜单"
+                            size="md"
+                        />
+                    )}
+                </HStack>
             )}
         </HStack>
     );