Changing site title font on mobile for Unwind

Hi,
I’m almost done with transferring our old site into wordpress using SiteOrigin Unwind. Great theme, thanks!

But I get stuck on one thing – the words in the title of our page are long, and on a mobile, the font is so large that all letters but one can fit into the screen – forcing the last letter to end up on a row of its own.

I’ve tried many of the suggestions listed in different threads here but no one seems to work – unless I’d like to force the fonts to be small on all screens, solving the mobile issue but also leaving desktop vewiers with a very small font. Not so responsive…

Is there a solution to this? Would love to get some help. ;-)

//Stefan