Darkening with rail curtains

Hello dear Ikea fans,

I am moving soon into an apartment with a pre-installed rail system (3 tracks) in front of the bedroom window. Can someone tell me if

(1) all or the common rail systems are compatible with each other
(the rail system is apparently not from IKEA) and

(2) whether IKEA offers light-blocking – that is, intended for darkening – "rail" curtains?
If yes, which ones or what is the product name?

Other solutions are of course also welcome

Thank you in advance
Paulinger

Hello,

I don't think that ikea sliding curtains fit on other rails.

There are no completely darkened sliding curtains at ikea. But there is a roller blind that is really great. It is coated on one side and totally blackout, it is recommended.

best regards