A bright, blocky low-poly geometric birthday invitation built like a builder's plan: the invitation sits in a dot-cornered frame with a dashed inner plate, a soft cyan glint, and a yellow brick-plate builder badge that carries the age, build date and build time like a construction profile. The honoree name leads in chunky Fredoka One display type in deep cyan over a 'Turns Four' context line, with a one-shot bouncy entrance and a per-letter color sweep on the milestone. Every section answers to the build: a polygon countdown strip with rising triangle shards, a faceted details manifest with all six canonical rows, a shard-and-spark atmosphere over the white photo ground, and an RSVP that closes with a perforation edge, gem-brick-hex stamp seats and the mascot placard standing by. The scene is a layered depth stack — photo ground, one carnival atmosphere, frosted white panels with cyan hairlines, drawn corner props and a commissioned icon family at a single stroke weight across nav, section heads and stamps. Motion is choreographed, never constant: one-shot entrances on themed keyframes, transform-only reveals that stay safe even if an observer fails, and a tap-ripple on the invitation itself. Fully editable online — swap the name, age, date, time and venue, add your host message, and share the live RSVP page with one link. Works beautifully on any phone, tablet or desktop.