This website is set in 13/20pt Acumin Pro. It uses three widths of Acumin depending on context and size — text, condensed and extracondensed — all of which were designed by one of my favourite typeface designers Robert Slimbach. Acumin is part of the Adobe Originals series known for their ‘highest standards for aesthetic value, technical quality, and typographic functionality.’
What appeals to me about Acumin are its character and readability, with the scale clearly tilting in the latter direction. Jeffrey Zeldman describes Acumin as a ‘robust yet water-neutral sans-serif … sturdy yet self-effacing as a waiter at a great restaurant … A Helvetica for readers.’
All fonts are delivered by Adobe.