Reusable fixed-style PPTX generation skill for the Signal Green Atlas visual brand — fluorescent green (#0CDA76) dominant background, black (#000000) typography and rules, black-and-white imagery only, bold avant-garde editorial atlas aesthetic, oversized uppercase grotesk headlines, strict two-column information grids, sharp rectangular photo windows, black circular bullets, deliberate asymmetry, widescreen 16:9 editable .pptx output.
