diff --git a/app/src/main/java/com/nova/brain/glass/helper/AsrHelper.kt b/app/src/main/java/com/nova/brain/glass/helper/AsrHelper.kt
index c9c6d73..6ac7554 100644
--- a/app/src/main/java/com/nova/brain/glass/helper/AsrHelper.kt
+++ b/app/src/main/java/com/nova/brain/glass/helper/AsrHelper.kt
@@ -196,6 +196,14 @@ object AsrHelper : OfflineCmdListener {
             val contentView = LayoutInflater.from(activity)
                 .inflate(R.layout.dialog_no_network, null)
 
+            // 黑底 + 绿色圆角线框
+            val density = activity.resources.displayMetrics.density
+            contentView.background = GradientDrawable().apply {
+                shape = GradientDrawable.RECTANGLE
+                cornerRadius = 12f * density
+                setColor(Color.BLACK)
+                setStroke((2f * density).toInt(), Color.parseColor("#FF40FF5E"))
+            }
             noNetworkDialog = AlertDialog.Builder(activity)
                 .setView(contentView)
                 .setCancelable(false)