sans-serif with serif

Diotima and a good sans pairing?


I'm having a hard time finding a nice sans that goes with Diotima LT Std Roman. I need something that has a classical vibe (obviously) but that also has a subtle Art Nouveau and/or Arts & Crafts thing going on, too. Nothing too decorative –just open, humanist and especially compatible with Diotima's characters a, b, e, m, and p. Something slightly wide, like the 105-110% horizontal scale range. Thanks in advance.