What kind of style do your posters have?

They should be expected to follow the same general identity as the rest of the brand: retro-inspired, tech-aware, visually referential, and often built around nostalgia transformed into something more current or ironic. Since the site positions the whole project around old technology, timeless design, and new life given to past aesthetics, it would make no sense for the poster category to feel visually detached from that.