feat(raised-tabbar): 样式调整

components/raised-tabbar.vue

@@ -184,20 +184,6 @@ export default {
     height: 60px;
     background: #ffffff;
 
-    // 使用伪元素创建拱形切口
-    &::before {
-      content: '';
-      position: absolute;
-      top: -20px;
-      left: 50%;
-      transform: translateX(-50%);
-      width: 80px;
-      height: 40px;
-      background: transparent;
-      border-radius: 0 0 40px 40px;
-      box-shadow: 0 20px 0 0 #ffffff;
-    }
-
     // 添加底部安全区域
     &::after {
       content: '';
@@ -270,11 +256,12 @@ export default {
 
         .center-icon-wrapper {
           position: absolute;
-          top: -60rpx;
+          top: -58rpx;
           background: #fff;
           border-radius: 50%;
           font-size: 0;
           padding: 4rpx;
+          z-index: 10;
 
           .center-icon {
             width: 92rpx;