Bergen to Flam official websites

What would be the best way to flam and back? I am thinking Ferry there and train back?

Or would it be more scenic if take the train first, then come via ferry because of the evening? I'm aware it's long nights in Norway now. But not sure how actually things are

Are these the official sites to book tickets directly?

https://www.norled.no/en/fjordcruise/sognefjorden-bergen-to-flaam/

https://www.vy.no/en/