Had a quick read through, made a quick test character. All looks good so far, only one piece of feedback: Having a properly hyperlinked table of contents would make finding things much easier.
Ideally everything that refers to another thing would link to the things it's referring to (eg: the list of lifeforms on page 62 linking to the lifeform pages when you click on one of the rows), but even just the ToC would be nice.