<?xml version="1.0" encoding="utf-8"?>
<!-- 底部导航栏背景 - 与背景协调的半透明渐变 -->
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    android:shape="rectangle">
    <gradient
        android:type="linear"
        android:angle="135"
        android:startColor="#E0FFAB91"
        android:centerColor="#E0F48FB1"
        android:endColor="#E0CE93D8" />
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