A bright full-bleed hero over the pool-caustics background component: pale hand-laid tiles and a navy lane mark refracted by the water, with sun-dappled caustic light drifting across them and ripples spreading wherever the cursor or a tap touches the surface. A light serif headline, a short intro and two Arrow Pill buttons sit at the bottom. Every pool setting passes through the pool prop; ripples start on their own when idle, the loop pauses offscreen, reduced motion shows one still frame and browsers without WebGL get a tiled CSS fallback.