Create one finished standalone photographic website background image, 1:1 square, approximately 1536 by 1536 pixels. Theme: Black light. Scene: Three very narrow parallel white light rays enter from the upper left, fade quickly into black, sparse tiny drifting dust. Art direction: Minimal high-end studio light photography. At least 80 percent of the frame is true near-black. Only tiny sparse dust motes, subtle realistic bloom, no oversized bokeh, no dense glitter, no stars drawn as icons, no purple or text. Composition: retain generous low-detail top space suitable for overlaying website copy, adapting subject placement naturally. This is the actual background artwork, not a website mockup. No text, letters, typography, logos, borders, collages, grids or watermarks. Full-bleed, polished, richly detailed at native resolution.