Hi,
on the website I made what you can see on my screenshot for the time to get the screenshot, after that I reset in the normal mode to have a clean homepage.
I tried to do you suggestion, changing the font size after to have declared as H2 the intro text, it's working fine, more or less, the space between line remain the same. You can see that on my screenshot, but also in the article.
However the best would be to have different setting for home page and the article, because good to have a more evident size on the article page, but for the home page I need to maintain the normale font size.
Thank you
Michele