diff --git a/src/components/Auth/AuthFormContent.js b/src/components/Auth/AuthFormContent.js
index d8756852..c22b6997 100644
--- a/src/components/Auth/AuthFormContent.js
+++ b/src/components/Auth/AuthFormContent.js
@@ -85,12 +85,15 @@ export default function AuthFormContent() {
     const [showNicknamePrompt, setShowNicknamePrompt] = useState(false);
     const [currentPhone, setCurrentPhone] = useState("");
 
+    // 响应式断点
+    const isMobile = useBreakpointValue({ base: true, md: false });
+    const stackDirection = useBreakpointValue({ base: "column", md: "row" });
+
     // 事件追踪
     const authEvents = useAuthEvents({
         component: 'AuthFormContent',
         isMobile,
     });
-    const stackDirection = useBreakpointValue({ base: "column", md: "row" });
     const stackSpacing = useBreakpointValue({ base: 4, md: 2 }); // ✅ 桌面端从32px减至8px，更紧凑
 
     // 表单数据