猜猜标志 LinearGradient(gradient: Gradient(colors: [Color.red, Color(red: 1, green: 0.8, blue: 0)]), startPoint: .leading, endPoint: .trailing) RadialGradient(gradient: Gradient(colors: [Color.blue, Color.black]), center: .center, startRadius: 20, endRadius: 200) AngularGradient(gradient: Gradient(col