I’d certainly make the email sign-up field much larger….it’s really small and hard to read what you have typed in.
The scroll scrollbar appears because there is too much top-margin on the #page-wrap. Maybe 50px instead of 100px?
Obviously, if the viewport is just too small there is nothing you can do but it’s an option for you.
I too find the Surf hover thing annoying…perhaps have it activate with a click?