diff --git a/frontend/src/components/meeting/MeetingToolbar.vue b/frontend/src/components/meeting/MeetingToolbar.vue
index 151879d..9540b7c 100644
--- a/frontend/src/components/meeting/MeetingToolbar.vue
+++ b/frontend/src/components/meeting/MeetingToolbar.vue
@@ -274,8 +274,8 @@ const emitIf = (name) => {
 
 .icon {
   position: relative;
-  width: 72rpx;
-  height: 72rpx;
+  width: 88rpx;
+  height: 88rpx;
   border-radius: 50%;
   background: linear-gradient(180deg, rgba(71, 85, 105, 0.95), rgba(51, 65, 81, 0.95));
   display: flex;
@@ -373,8 +373,8 @@ const emitIf = (name) => {
     display: flex;
   }
   .icon {
-    width: 64rpx;
-    height: 64rpx;
+    width: 80rpx;
+    height: 80rpx;
     background: linear-gradient(180deg, rgba(71, 85, 105, 0.95), rgba(44, 56, 78, 0.96));
     box-shadow: inset 0 1rpx 0 rgba(255, 255, 255, 0.12), 0 6rpx 16rpx rgba(0, 0, 0, 0.36);
   }
diff --git a/frontend/src/pages/cloud-law/video-call.vue b/frontend/src/pages/cloud-law/video-call.vue
index d12661f..bb81ebc 100644
--- a/frontend/src/pages/cloud-law/video-call.vue
+++ b/frontend/src/pages/cloud-law/video-call.vue
@@ -1004,6 +1004,19 @@ const minimizeToMiniProgram = () => {
   stopCommandPolling()
   meetingStore.leave().catch(() => {})
   const mp = getMiniProgram()
+  try {
+    if (mp && typeof mp.postMessage === 'function') {
+      mp.postMessage({
+        data: {
+          type: 'cloudLawMinimized',
+          action: 'cloudLawMinimized',
+          callId: callId.value
+        }
+      })
+    }
+  } catch (e) {
+    console.warn('[CloudLawVideoCall] minimize postMessage failed', e)
+  }
   try {
     if (mp && typeof mp.navigateBack === 'function') {
       mp.navigateBack({ delta: 1 })