Custom single.css / how to redirect location of css files?

Hiya!

I’m integrating wordpress into my current site, but not creating a theme. I’m adding a <?php require(‘wordpress/wp-blog-header.php’); ?> to the 2 or three pages which access wp.

I’ve got my main php pages under

/

my css under

css/

and my wordpress files under

wordpress/

My main difficulty has been single.php. I have a few pages I’d like to link to the permalink and have a custom single page for that item.

Right now, it pulls up the theme’s single.php page with the theme’s styling.

I’d like to plop a loop into a custom single.php type page — which looks like the rest of my site permalink— and have it pull up that.

I’m not sure how I can do this besides bastardizing the single.php for a theme — but even then, I’m not sure how to reference my css file which is a few directories up from the single.php.

Better way to do this?

Thanks!