fix:

1. 修复登录界面文字被遮挡问题
2. 大字模式关闭后显示异常问题
3. 重新调整大字模式是否开启时的字体显示效果

app-expo/src/app/(tabs)/profile.tsx

@@ -90,11 +90,15 @@ function LanguageRow({
         <Icon as={Globe} className="text-muted-foreground" size={20} />
         <View>
           <Text className="font-medium text-foreground">{label}</Text>
-          <Text className="text-sm text-muted-foreground">{description}</Text>
+          <Text variant="bodySmall" className="text-muted-foreground">
+            {description}
+          </Text>
         </View>
       </View>
       <View className="flex-row items-center gap-2">
-        <Text className="text-sm text-muted-foreground">{currentLabel}</Text>
+        <Text variant="bodySmall" className="text-muted-foreground">
+          {currentLabel}
+        </Text>
         <Icon as={ChevronRight} className="text-muted-foreground" size={20} />
       </View>
     </Pressable>
@@ -120,7 +124,9 @@ function SettingRow({
         <Icon as={SettingIcon} className="text-muted-foreground" size={20} />
         <View>
           <Text className="font-medium text-foreground">{label}</Text>
-          <Text className="text-sm text-muted-foreground">{description}</Text>
+          <Text variant="bodySmall" className="text-muted-foreground">
+            {description}
+          </Text>
         </View>
       </View>
       <Switch checked={value} onCheckedChange={onValueChange} />
@@ -203,7 +209,7 @@ export default function ProfileScreen() {
           <Text variant="h3" className="text-foreground">
             {user?.nickname ?? t('userNamePlaceholder')}
           </Text>
-          <Text className="text-sm text-muted-foreground">
+          <Text variant="bodySmall" className="text-muted-foreground">
             {t('userTier', { tier: tierLabel })}
           </Text>
         </View>