The "Roboto, Corbel, ..." font on the documentation site is really easy on the eyes and conducive to fast reading/scanning (nice choice).

In contrast I find the font used on www looks nice at first glance but is very difficult to read fast/scan, can I suggest that you use the same font as the docs site?

E.g. open these two pages next to each other and read two paragraphs from each, you immediately understand what I mean:
https://docs.djangoproject.com/en/1.7/intro/overview/
https://www.djangoproject.com/weblog/2014/dec/15/announcing-django-website-redesign/