地面嵌灯星图：走在光点上的夜间地景

Design a public artwork embedded in the ground plane, visible only after dark. Show a large paved plaza with several thousand tiny circular light points set flush into the surface, each no more than twenty millimetres across, distributed in a pattern that is dense in some regions and almost empty in others so the field reads as a scattered constellation rather than a grid. Detail the individual points as warm white and very small but intensely bright, each throwing a soft circular pool onto the surrounding stone, with the points slowly and independently varying in brightness so the whole field seems to breathe and twinkle. Show the daytime state implied by contrast: the fittings are flush stainless discs that read as ordinary paving studs and the artwork is effectively invisible until night. Detail the paving as dark grey granite, slightly damp, so each point doubles into a reflected smear and the whole surface glistens. Show people walking across the field, their shoes and lower legs lit from below, casting strange upward shadows on themselves, several standing still and looking down. Detail the surrounding buildings as dark silhouettes with only a few lit windows. Set it on an urban plaza at night. Photorealistic, constellation-like, warm points on wet dark stone, low eye-level view across the plaza.