Particle sphere

A canvas background inspired by Ameba's hero animation: particles are distributed on a Fibonacci sphere, depth-sorted and drawn as square blue tiles with sparse cyan accents. Under the canvas sits a quiet CSS layer: a large grid and distant square dots masked around the sphere so the blue field does not feel empty. During the break-apart motion, a small subset turns yellow and receives a thin square target mark around it. The destruction progress comes from the nearest scroll container or the window, so scrolling down expands and fades the shell, while reverse scrolling smoothly rebuilds the globe. The component caps devicePixelRatio at 2, pauses off-screen and in hidden tabs, supports prefers-reduced-motion with a static frame, and uses no external assets or dependencies.