diff --git a/src/components/Auth/AuthModalManager.js b/src/components/Auth/AuthModalManager.js
index d1314ea4..0e0323b9 100644
--- a/src/components/Auth/AuthModalManager.js
+++ b/src/components/Auth/AuthModalManager.js
@@ -1,5 +1,5 @@
 // src/components/Auth/AuthModalManager.js
-import React from 'react';
+import React, { useEffect, useRef } from 'react';
 import {
   Modal,
   ModalOverlay,
@@ -10,6 +10,8 @@ import {
 } from '@chakra-ui/react';
 import { useAuthModal } from '../../hooks/useAuthModal';
 import AuthFormContent from './AuthFormContent';
+import { trackEventAsync } from '@lib/posthog';
+import { ACTIVATION_EVENTS } from '@lib/constants';
 
 /**
  * 全局认证弹窗管理器
@@ -21,6 +23,27 @@ export default function AuthModalManager() {
     closeModal
   } = useAuthModal();
 
+  // ✅ 追踪弹窗打开次数（用于漏斗分析）
+  const hasTrackedOpen = useRef(false);
+
+  useEffect(() => {
+    if (isAuthModalOpen && !hasTrackedOpen.current) {
+      // ✅ 使用异步追踪，不阻塞渲染
+      trackEventAsync(ACTIVATION_EVENTS.LOGIN_PAGE_VIEWED, {
+        timestamp: new Date().toISOString(),
+        modal_type: 'auth_modal',
+        trigger_source: 'user_action', // 可以通过 props 传递更精确的来源
+      });
+
+      hasTrackedOpen.current = true;
+    }
+
+    // ✅ 弹窗关闭时重置标记（允许再次追踪）
+    if (!isAuthModalOpen) {
+      hasTrackedOpen.current = false;
+    }
+  }, [isAuthModalOpen]);
+
   // 响应式尺寸配置
   const modalSize = useBreakpointValue({
     base: "md",      // 移动端：md（不占满全屏）