Update: OK I’m going to call that done. Can I just say for the record that rounded corners were certainly not the new black when HTML was designed. Endless nested divs were required to get the right-hand rounded corners to slide nicely over the background when the page is resized. Still, the end effect is pretty slick.
Oooh sexy? The header obviously needs work, but this is the general look-and-feel I’m going for.