diff --git a/docs/.vitepress/theme/layout.vue b/docs/.vitepress/theme/layout.vue
index 2b46a1f..281241a 100644
--- a/docs/.vitepress/theme/layout.vue
+++ b/docs/.vitepress/theme/layout.vue
@@ -29,11 +29,4 @@ const home = apply_prefix("/", base);
   </Layout>
 </template>
 
-<style>
-.favicon {
-  height: 50%;
-}
-.VPNavBarTitle span {
-  /* size: fit-content; */
-}
-</style>
+<style></style>
diff --git a/docs/xrobot/guide/imgs/agent-management/qrcode.png b/docs/xrobot/guide/imgs/agent-management/qrcode.png
index 09754bf..387334c 100644
Binary files a/docs/xrobot/guide/imgs/agent-management/qrcode.png and b/docs/xrobot/guide/imgs/agent-management/qrcode.png differ
diff --git a/docs/xrobot/guide/imgs/device-intro/qrcode.png b/docs/xrobot/guide/imgs/device-intro/qrcode.png
index 0c80ec7..387334c 100644
Binary files a/docs/xrobot/guide/imgs/device-intro/qrcode.png and b/docs/xrobot/guide/imgs/device-intro/qrcode.png differ