The Style Guide for Power Kite is broken down into 2 areas - The module and template styles plus the content styles (typography).

The module styles include the modules suffixes and positions for Power Kite, and the content styles (typography) shows the various styles used for content within your site (such as tables, lists, info boxes etc).

These have all been detailed in full and can be seen in action by selecting the Theme Style link from the top menu above.