>
> Let me know if this still looks good.
>

This looks great to me.  The attached version integrates my hidden TOC
style sheet, and I think the TOC looks much better with your headline
styles applied.

The attached worg.css also removes the "line-height:16px;" directive, as
this causes multi-line headlines to overlap themselves.

One last change I would suggest, is that rather than use inline css for
the highlighted source code, we use a css stylesheet by setting the 

  (setq org-export-htmlize-output-type 'css)

Then use a single .css style sheet as done with the "@import(emacs.css)"
in my previous submission.  I'm partial to the emacs.css bundled with my
submission over the current code fontification, but that's just me.

Cheers -- Eric