Is it possible to keep SS admin stylesheets from interfering with the theme CSS?
I have some painfull problems with current CSS, because SS inherits some of the CSS from /cms/css/typography.css and /cms/css/layout.css. I Wouldnt want to start tweaking those admin stylesheets, because I am pretty sure it will end badly.
This is because your page.ss file or your Page.php file has the lines <% require typography.css %> or Requirements::css('typography.css'). By require it looks in your theme, if those files don't exist in your theme then it pulls the files from a module (eg the cms module).
To not include a typography.css file just open up themes/yourtheme/templates/Page.ss or mysite/code/Page.php and remove the specific Requirements call which is including typography.
As an aside if you're wondering why a link to a css file is defined in 2 places, it is for legacy reasons as earlier versions didn't have the template <% require %> tag.