Reverted the Vercel bubble back to the v18 version: a rounded-full white pill with the Vercel triangle + "Vercel" text in black, and a simple triangular SVG tail pointing down-left from the bottom of the bubble.

Replaced the Vercel triangle + wordmark in the bottom right with a clean, bold "v0" in white at text-4xl / text-5xl for mobile/desktop. Same position, same pointer-events-none treatment so it stays non-interactive as a background brand mark.