<?xml version="1.0" encoding="utf-8"?>
<!-- 🎨 分类图标背景：纯白色，增强对比度和层次感 -->
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval">
    <solid android:color="#FFFFFF" />
    <size
        android:width="56dp"
        android:height="56dp" />
</shape>




