I agree the blue text colour looks bad on mobile, but I'd also say it looks kind of bad on desktop too. Hard to read against a black background.
The seperator not working on mobile, I'll investigate.
The font size is way way too small on mobile. Please use columns_mobile in your theme settings. It may be that the font you are using is lying in its metadata, check to see that your columns_mobile prference approximately matches the number of columns, if it doesn't there is a anyway to correct lying fonts.
The title screen, I'm.checking that out now.