Find the Odd One

Build a mobile portrait web app called “Find the Odd One”.

Opening: no cover screen — the app opens straight into the live interactive scene (a full-bleed wall of glowing tiles with the title painted straight onto the wall); the title lives inside the scene and any hint dissolves on the first touch.
Core action (tap the odd tile): Eight rounds of spot-the-impostor: one square blinks half a beat late, one arrow points the wrong way, one emoji is quietly sad — find the odd tile faster each round as the grid grows.
Result: an observation-rank card with your reaction times. Put a real Share button on the result screen (it must post to the Eazo community) and keep Replay next to it.
Visual bar: tiles breathe in sync, the odd one betrays itself subtly, a spotlight snaps to your catch.

Global requirements: mobile-first portrait, touch only, 100dvh with safe areas, no hover dependence. Built-in i18n with exactly two locales (English default, Chinese only after the user taps the EN/中文 toggle placed clear of the status bar), never mix languages on one screen, share output always English. Absolutely no external APIs, no login, no background music. Every control must actually work — no placeholders.