ios – How to have a conditional modifier based on the os version in SwiftUI?

Im new to programming and I joined StackOverflow today. I hope I can ask based on the guidelines:

I’m starting SwiftUI and it seems it has many code that works only for iOS 17, take a look at this:

    if #available(iOS 17.0, *) {
        Text("Hello World")
            .font(.title.bold())
            .multilineTextAlignment(.leading)

            // This modifier only works on iOS 17
            .foregroundStyle(.red)
    } else {
        Text("Hello World")
            .font(.title.bold())
            .multilineTextAlignment(.leading)

            .foregroundColor(.red)
    }

One of the first thing I learned is to not repeat the same code but how can I apply different modifiers easily without repeating the code? some thing like this:

    Text("Hello World")
        .font(.title.bold())
        .multilineTextAlignment(.leading)

    if #available(iOS 17.0, *) {
        .foregroundStyle(.red)
    } else {
        .foregroundColor(.red)
    }

P.S: I have seen posts like this to implement a custom modifier that takes a bool as input, but it can’t take the os version in a way that the compiler understands like #available(iOS 17.0, *).

Thanks for considering my question