<?xml version="1.0" encoding="utf-8"?>
<!-- 现代渐变活力风卡片背景 -->
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- 阴影层 -->
    <item android:top="2dp">
        <shape android:shape="rectangle">
            <corners android:radius="16dp"/>
            <solid android:color="@color/shadow_light"/>
        </shape>
    </item>
    <!-- 渐变边框 -->
    <item android:bottom="2dp">
        <shape android:shape="rectangle">
            <corners android:radius="16dp"/>
            <gradient
                android:type="linear"
                android:angle="135"
                android:startColor="@color/gradient_blue"
                android:centerColor="@color/gradient_pink"
                android:endColor="@color/gradient_orange_yellow" />
        </shape>
    </item>
    <!-- 卡片主体 -->
    <item 
        android:top="1dp"
        android:bottom="3dp"
        android:left="1dp"
        android:right="1dp">
        <shape android:shape="rectangle">
            <corners android:radius="16dp"/>
            <solid android:color="@color/card_bg"/>
        </shape>
    </item>
    <!-- 渐变质感叠加 -->
    <item 
        android:top="1dp"
        android:bottom="3dp"
        android:left="1dp"
        android:right="1dp">
        <shape android:shape="rectangle">
            <corners android:radius="16dp"/>
            <solid android:color="@color/tech_blue_subtle"/>
        </shape>
    </item>
</layer-list>

