Interesting sci-fi setup and well explained (not too short, not too long)
Good use of sensory descriptions in the story
Simple but effective art like old choose your own adventure books used
I would go with white text on gray bg or gray text on white bg. White on black is harsh for my eyes
The dice for stats is inconsistent, stick with 1d10 or 2d6 for all I'd say. Once you get more familiar with sugarcube coding, allow for some bonus, wildcard points to be added on to the rolled stats so they can customize their character more toward their liking (some people might want to play a high stamina tank, for instance).