缩短功能按钮上下高度，优化紧凑布局

pages/index/index.wxss

@@ -97,7 +97,7 @@ page {
   display: flex;
   justify-content: space-around;
   align-items: center;
-  padding: 15rpx 20rpx;
+  padding: 10rpx 20rpx;
   width: 100%;
   max-width: 850rpx;
   box-sizing: border-box;
@@ -114,7 +114,7 @@ page {
   flex-direction: column;
   align-items: center;
   justify-content: center;
-  padding: 15rpx 0;
+  padding: 8rpx 0;
   margin: 0;
   text-align: center;
   background: #ffffff;
@@ -126,19 +126,19 @@ page {
 }
 
 .function-btn:hover {
-  transform: translateY(-3rpx);
+  transform: translateY(-2rpx);
   background: #f5f5f5;
-  box-shadow: 0 3rpx 10rpx rgba(0, 0, 0, 0.1);
+  box-shadow: 0 2rpx 8rpx rgba(0, 0, 0, 0.1);
 }
 
 .function-btn:active {
   transform: translateY(0rpx) scale(0.96);
-  box-shadow: 0 2rpx 8rpx rgba(0, 0, 0, 0.15);
+  box-shadow: 0 1rpx 6rpx rgba(0, 0, 0, 0.15);
 }
 
 .function-btn-icon {
-  font-size: 48rpx;
-  margin-bottom: 8rpx;
+  font-size: 42rpx;
+  margin-bottom: 5rpx;
   transition: all 0.3s ease;
   display: block;
 }
@@ -156,7 +156,7 @@ page {
 }
 
 .function-btn-text {
-  font-size: 20rpx;
+  font-size: 18rpx;
   color: #333333;
   font-weight: 600;
   letter-spacing: 0;