diff --git a/package.json b/package.json
index ec0a1522..ee13148a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vocechat-web",
-  "version": "0.9.68",
+  "version": "0.9.69",
   "homepage": "https://voce.chat",
   "dependencies": {
     "@metamask/onboarding": "^1.0.1",
diff --git a/public/widget.js b/public/widget.js
index 9618cd63..1e0b58f0 100644
--- a/public/widget.js
+++ b/public/widget.js
@@ -78,6 +78,8 @@
         script.src = `${origin}${manifest.files["widget.js"]}`;
         script.onload = () => {
           // 脚本加载完成后，需要手动初始化 React 应用到 shadow DOM
+          // 检测父窗口是否为移动端
+          const isMobile = w.innerWidth < 768;
           const params = new URLSearchParams({
             id,
             host: hostId,
@@ -97,7 +99,8 @@
             closeWidth,
             closeHeight,
             openWidth,
-            openHeight
+            openHeight,
+            isMobile
           });
 
           // 将参数传递给 shadow DOM 内的应用
@@ -131,9 +134,11 @@
     const wrapper = d.createElement("iframe");
     wrapper.id = "VOCECHAT_WIDGET";
     Object.assign(wrapper.style, baseStyles);
+    // 检测父窗口是否为移动端
+    const isMobile = w.innerWidth < 768;
     wrapper.src = `${origin}/widget.html?id=${id}&host=${hostId}&autoReg=${autoReg}&token=${loginToken}&themeColor=${encodeURIComponent(
       themeColor
-    )}&from=${encodeURIComponent(location.hostname)}&welcome=${encodeURIComponent(welcome)}&title=${encodeURIComponent(title)}&logo=${encodeURIComponent(logo)}&popupTitle=${encodeURIComponent(popupTitle)}&popupSubtitle=${encodeURIComponent(popupSubtitle)}&popupImage=${encodeURIComponent(popupImage)}&popupClosable=${popupClosable}&showPopup=${showPopup}`;
+    )}&from=${encodeURIComponent(location.hostname)}&welcome=${encodeURIComponent(welcome)}&title=${encodeURIComponent(title)}&logo=${encodeURIComponent(logo)}&popupTitle=${encodeURIComponent(popupTitle)}&popupSubtitle=${encodeURIComponent(popupSubtitle)}&popupImage=${encodeURIComponent(popupImage)}&popupClosable=${popupClosable}&showPopup=${showPopup}&isMobile=${isMobile}`;
     wrapper.width = actualCloseWidth;
     wrapper.height = actualCloseHeight;
     wrapper.frameborder = 0;
diff --git a/src/widget/Icon.tsx b/src/widget/Icon.tsx
index a72359a7..2cd5f82c 100644
--- a/src/widget/Icon.tsx
+++ b/src/widget/Icon.tsx
@@ -10,14 +10,16 @@ type Props = {
 
 const Icon = ({ handleClick }: Props) => {
   const serverLogo = useAppSelector((store) => store.server.logo, shallowEqual);
-  const { popupTitle, popupSubtitle, popupImage, logo: customLogo, popupClosable, showPopup } = useWidget();
+  const { popupTitle, popupSubtitle, popupImage, logo: customLogo, popupClosable, showPopup, embed, isMobile: isMobileFromContext } = useWidget();
   const [tooltipVisible, setTooltipVisible] = useState(true);
 
   // 优先使用自定义 logo，否则使用服务器 logo
   const logo = customLogo || serverLogo;
 
   // 检测是否是移动端
-  const isMobile = typeof window !== 'undefined' && window.innerWidth < 768;
+  // 在 embed 模式（iframe/shadow DOM）下，使用从父窗口传递的 isMobile 参数
+  // 在非 embed 模式下，直接检测当前窗口宽度
+  const isMobile = embed ? isMobileFromContext : (typeof window !== 'undefined' && window.innerWidth < 768);
 
   // 是否显示 tooltip（桌面端 + 有内容 + 用户未关闭 + showPopup 开关打开）
   const showTooltip = !isMobile && tooltipVisible && (popupTitle || popupSubtitle) && showPopup;
diff --git a/src/widget/Popup/index.tsx b/src/widget/Popup/index.tsx
index 66ac6134..0581fc46 100644
--- a/src/widget/Popup/index.tsx
+++ b/src/widget/Popup/index.tsx
@@ -32,7 +32,7 @@ const Index = ({ handleClose, hostId }: Props) => {
       className={clsx(
         "flex flex-col bg-white dark:bg-gray-700 rounded-md overflow-hidden shadow-xl",
         embed
-          ? ""
+          ? "border border-gray-200 dark:border-gray-600"
           : `w-full h-full md:max-w-lg md:h-[calc(100dvh_-_20px)] m-auto md:my-2 md:shadow-lg rounded-none md:rounded-md`
       )}
       style={embed ? { width: `${openWidth}px`, height: `${openHeight}px` } : {}}
diff --git a/src/widget/WidgetContext.tsx b/src/widget/WidgetContext.tsx
index 9b184e4e..396df239 100644
--- a/src/widget/WidgetContext.tsx
+++ b/src/widget/WidgetContext.tsx
@@ -32,6 +32,7 @@ const openWidth = parseInt(query.get("openWidth") || "380");
 const openHeight = parseInt(query.get("openHeight") || "680");
 const closeWidth = parseInt(query.get("closeWidth") || "48");
 const closeHeight = parseInt(query.get("closeHeight") || "48");
+const isMobile = query.get("isMobile") === "true";
 const WidgetContext = createContext({
   id,
   token,
@@ -55,7 +56,8 @@ const WidgetContext = createContext({
   openWidth,
   openHeight,
   closeWidth,
-  closeHeight
+  closeHeight,
+  isMobile
 });
 
 function WidgetProvider({ children }: { children: ReactNode }) {
@@ -91,7 +93,8 @@ function WidgetProvider({ children }: { children: ReactNode }) {
         openWidth,
         openHeight,
         closeWidth,
-        closeHeight
+        closeHeight,
+        isMobile
       }}
     >
       {children}