Well, your pages son't need scrolling. That's a plus. So why not add a css trick?

The font-sze is chosen in the p-tag. No further cascading is done. So if you add a blank anchor to it (a dummy link)  and then specify that if all a within p, have a hover state that changes the font size to 12px?

here's an example. remove the $ signs (to avoid code here on the site), copy and paste in notepad or bbedit, save as an html file and then open it in a browser.

$
$
$
$
$
$
$

this text enlarges when the mouse hovers above it

$
$

You could even add  some normal and larger "A" with a one pixel border around each on on the top-right of  your page. Most people recognise this as "aha: font-size. that's a nice guy! he thinks about people like me." and add the same kind of link to these. When people hold their mouses/mice? over it, the text enlarges. And your design is saved.

But of course it's your site, and I am as often trying to make this world a better place from my point of view. Many a war started that way. So: no interference in your business meant.

There are no Borg. All resistance is fertile.