fix: 页面自适应屏幕尺寸。

src/pages/bluetooth/bluetooth.vue

@@ -43,6 +43,18 @@
         停止搜索
       </u-button>
     </view>
+    
+    <!-- 预览按钮 -->
+    <view class="preview-button-wrapper">
+      <u-button 
+        type="success" 
+        plain
+        @click="previewMixerPage"
+      >
+        <uni-icons type="eye" color="#52c41a" size="20" style="margin-right: 8rpx;"></uni-icons>
+        预览搅拌器页面
+      </u-button>
+    </view>
 
 
     <!-- 设备列表 -->
@@ -1702,6 +1714,22 @@ page {
   }
 }
 
+.preview-button-wrapper {
+  padding: 0 20rpx;
+  margin-bottom: 20rpx;
+  
+  :deep(.u-button) {
+    width: 100%;
+    height: 80rpx;
+    border-radius: 16rpx;
+    font-size: 28rpx;
+    font-weight: 600;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+  }
+}
+
 .device-list {
   background: rgba(255, 255, 255, 0.95);
   margin: 20rpx;