diff --git a/src/components/Navbars/HomeNavbar.js b/src/components/Navbars/HomeNavbar.js
index 4af73df8..2ad588e1 100644
--- a/src/components/Navbars/HomeNavbar.js
+++ b/src/components/Navbars/HomeNavbar.js
@@ -54,13 +54,11 @@ import { WatchlistMenu, FollowingEventsMenu } from './components/FeatureMenus';
 import { useWatchlist } from '../../hooks/useWatchlist';
 import { useFollowingEvents } from '../../hooks/useFollowingEvents';
 
-// Phase 7 优化: 提取的二级导航、资料完整性、右侧功能区组件
-import SecondaryNav from './components/SecondaryNav';
+// Phase 7 优化: 提取的资料完整性、右侧功能区组件
 import ProfileCompletenessAlert from './components/ProfileCompletenessAlert';
 import { useProfileCompleteness } from '../../hooks/useProfileCompleteness';
 import NavbarActions from './components/NavbarActions';
 
-// Phase 7: SecondaryNav 组件已提取到 ./components/SecondaryNav/index.js
 // Phase 4: MoreNavMenu 和 NavItems 组件已提取到 Navigation 目录
 
 export default function HomeNavbar() {
@@ -207,9 +205,6 @@ export default function HomeNavbar() {
                 />
             </Box>
 
-            {/* 二级导航栏 - 显示当前页面所属的二级菜单 */}
-            {!isMobile && <SecondaryNav showCompletenessAlert={showCompletenessAlert} />}
-
             {/* 投资日历 Modal - 已移至 CalendarButton 组件内部 */}
         </>
     );
diff --git a/src/views/AgentChat/index.js b/src/views/AgentChat/index.js
index aefca8af..6a1ce0e2 100644
--- a/src/views/AgentChat/index.js
+++ b/src/views/AgentChat/index.js
@@ -980,127 +980,89 @@ const AgentChatV4 = () => {
 
       {/* 主聊天区域 */}
       <Flex flex="1" direction="column" h="100%" position="relative">
-        {/* 聊天头部 */}
-        <Box
-          bg={glassBg}
-          backdropFilter="blur(20px)"
+        {/* 顶部操作栏 - 简化版 */}
+        <HStack
+          px={4}
+          py={2}
           borderBottom="1px solid"
           borderColor={borderGold}
-          px={{ base: 2, md: 4 }}
-          py={{ base: 2, md: 2 }}
-          minH={{ base: "56px", md: "64px" }}
-          boxShadow="0 4px 16px rgba(255, 215, 0, 0.1)"
+          bg={glassBg}
+          backdropFilter="blur(20px)"
+          justify="space-between"
           flexShrink={0}
-          zIndex={10}
         >
-          <Flex justify="space-between" align="center" h="full">
-            <HStack spacing={{ base: 2, md: 3 }} align="center" flex={1} minW={0}>
-              <Box
-                w={{ base: "24px", md: "32px" }}
-                h={{ base: "24px", md: "32px" }}
-                borderRadius="lg"
-                bg={goldGradient}
-                display="flex"
-                alignItems="center"
-                justifyContent="center"
-                boxShadow="0 4px 12px rgba(255, 215, 0, 0.3)"
-                flexShrink={0}
-              >
-                <FiCpu fontSize={{ base: "0.9rem", md: "1.2rem" }} color={darkBg} />
-              </Box>
-              <VStack align="start" spacing={0} flex={1} minW={0}>
-                <HStack spacing={2} align="baseline">
-                  <Heading
-                    size={{ base: "xs", md: "sm" }}
-                    color={textWhite}
-                    noOfLines={1}
-                  >
-                    价小前投研
-                  </Heading>
-                  <Badge
-                    bg="rgba(255, 215, 0, 0.2)"
-                    color={goldAccent}
-                    fontSize={{ base: "xx-small", md: "xs" }}
-                    borderRadius="full"
-                    px={{ base: 1, md: 2 }}
-                    whiteSpace="nowrap"
-                    display="inline-flex"
-                    alignItems="center"
-                    gap={1}
-                  >
-                    <Box as={FiZap} display="inline-block" width="10px" height="10px" />
-                    <Text as="span" fontSize="inherit">AI 深度分析</Text>
-                  </Badge>
-                </HStack>
-                <Text
-                  fontSize={{ base: "xx-small", md: "xs" }}
-                  color={textGray}
-                  display={{ base: "none", lg: "block" }}
-                  noOfLines={1}
-                >
-                  {AVAILABLE_MODELS.find(m => m.id === selectedModel)?.name || '智能模型'}
-                </Text>
-              </VStack>
-            </HStack>
-
-            <HStack spacing={{ base: 1, md: 2 }} flexShrink={0}>
-              <IconButton
-                icon={<FiMessageSquare />}
-                size="sm"
-                variant="ghost"
-                color={goldAccent}
-                _hover={{ bg: 'rgba(255, 215, 0, 0.1)' }}
-                aria-label="历史对话"
-                onClick={toggleSidebar}
-              />
-              <IconButton
-                icon={<FiRefreshCw />}
-                size="sm"
-                variant="ghost"
-                color={textGray}
-                _hover={{ color: goldAccent, bg: 'rgba(255, 215, 0, 0.1)' }}
-                aria-label="清空对话"
-                onClick={handleClearChat}
-              />
-              <IconButton
-                icon={<FiDownload />}
-                size="sm"
-                variant="ghost"
-                color={textGray}
-                _hover={{ color: goldAccent, bg: 'rgba(255, 215, 0, 0.1)' }}
-                aria-label="导出对话"
-                onClick={handleExportChat}
-                display={{ base: "none", sm: "inline-flex" }}
-              />
-              <IconButton
-                icon={<FiSettings />}
-                size="sm"
-                variant="ghost"
-                color={goldAccent}
-                _hover={{ bg: 'rgba(255, 215, 0, 0.1)' }}
-                aria-label="设置"
-                onClick={toggleRightPanel}
-              />
-            </HStack>
-          </Flex>
-
-          {/* 进度条 */}
-          {isProcessing && (
-            <Progress
-              value={currentProgress}
-              size="xs"
-              mt={3}
-              borderRadius="full"
-              bg="rgba(255, 255, 255, 0.1)"
-              sx={{
-                '& > div': {
-                  background: goldGradient,
-                },
-              }}
-              isAnimated
+          {/* 左侧 - 标题和模型显示 */}
+          <HStack spacing={3}>
+            <IconButton
+              icon={<FiMessageSquare />}
+              size="sm"
+              variant="ghost"
+              color={goldAccent}
+              _hover={{ bg: 'rgba(255, 215, 0, 0.1)' }}
+              aria-label="历史对话"
+              onClick={toggleSidebar}
             />
-          )}
-        </Box>
+            <Text fontSize="sm" color={textWhite} fontWeight="medium">
+              价小前 AI
+            </Text>
+            <Badge
+              bg="rgba(255, 215, 0, 0.2)"
+              color={goldAccent}
+              fontSize="xs"
+              borderRadius="full"
+              px={2}
+            >
+              {AVAILABLE_MODELS.find(m => m.id === selectedModel)?.name || '智能模型'}
+            </Badge>
+          </HStack>
+
+          {/* 右侧 - 操作按钮 */}
+          <HStack spacing={1}>
+            <IconButton
+              icon={<FiRefreshCw />}
+              size="sm"
+              variant="ghost"
+              color={textGray}
+              _hover={{ color: goldAccent, bg: 'rgba(255, 215, 0, 0.1)' }}
+              aria-label="清空对话"
+              onClick={handleClearChat}
+            />
+            <IconButton
+              icon={<FiDownload />}
+              size="sm"
+              variant="ghost"
+              color={textGray}
+              _hover={{ color: goldAccent, bg: 'rgba(255, 215, 0, 0.1)' }}
+              aria-label="导出对话"
+              onClick={handleExportChat}
+            />
+            <IconButton
+              icon={<FiSettings />}
+              size="sm"
+              variant="ghost"
+              color={goldAccent}
+              _hover={{ bg: 'rgba(255, 215, 0, 0.1)' }}
+              aria-label="设置"
+              onClick={toggleRightPanel}
+            />
+          </HStack>
+        </HStack>
+
+        {/* 进度条 */}
+        {isProcessing && (
+          <Progress
+            value={currentProgress}
+            size="xs"
+            borderRadius="full"
+            bg="rgba(255, 255, 255, 0.1)"
+            sx={{
+              '& > div': {
+                background: goldGradient,
+              },
+            }}
+            isAnimated
+          />
+        )}
 
         {/* 消息列表 */}
         <Box