import 'dart:io'; import 'package:flutter/material.dart'; // brand color rgb(49, 27, 146) rgb(96, 76, 236) const brandColor = Color(0xFF311B92); const brandColorLight = Color(0xFF604CEC); final brandLightColorScheme = ColorScheme.fromSeed( seedColor: brandColor, brightness: Brightness.light, ); final brandDarkColorScheme = ColorScheme.fromSeed( seedColor: brandColor, brightness: Brightness.dark, ); /// 系统字体(跨平台) String get fontFamilyPlatform { if (Platform.isIOS || Platform.isMacOS) { return 'PingFang SC'; // 苹方,仅苹果设备 } else if (Platform.isAndroid) { return 'Roboto'; // Android 默认 } else if (Platform.isWindows) { return 'Microsoft YaHei'; // Windows 微软雅黑 // } else if (Platform.isLinux) { // return 'Ubuntu'; // Linux } else { return 'Arial'; // 其他平台回退 } }