缩小回到顶部按钮尺寸

pages/index/index.wxss

@@ -1521,8 +1521,8 @@ wx-button:not([size=mini]) {
   position: fixed;
   right: 24rpx;
   bottom: 180rpx;
-  width: 96rpx;
-  height: 96rpx;
+  width: 72rpx;
+  height: 72rpx;
   background: rgba(255, 255, 255, 0.25);
   backdrop-filter: blur(16rpx);
   -webkit-backdrop-filter: blur(16rpx);
@@ -1531,7 +1531,7 @@ wx-button:not([size=mini]) {
   flex-direction: column;
   justify-content: center;
   align-items: center;
-  box-shadow: 0 6rpx 20rpx rgba(0, 0, 0, 0.15);
+  box-shadow: 0 4rpx 12rpx rgba(0, 0, 0, 0.15);
   border: 2rpx solid rgba(255, 255, 255, 0.4);
   opacity: 0;
   transform: translateY(20rpx);
@@ -1547,7 +1547,7 @@ wx-button:not([size=mini]) {
 }
 
 .back-to-top-icon {
-  font-size: 32rpx;
+  font-size: 24rpx;
   color: #1677ff;
   font-weight: 600;
   line-height: 1;