templates/CardStream/_MODULE_/src/template/res/values-v16/styles.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <style name="CardTitle" parent="@style/CardTitleBase">
        <item name="android:fontFamily">sans-serif-condensed</item>
    </style>

    <style name="CardContent" parent="@style/CardContentBase">
        <item name="android:fontFamily">sans-serif-light</item>
    </style>
</resources>