A sleek mockup of a modern digital advertising screen mounted on a dark wall in a premium fitness club corridor. The screen displays abstract turquoise and emerald geometric shapes (no readable text on the screen). Deep black surroundings. Vibrant orange neon side lighting from the right edge, creating a warm rim light on the screen frame. Subtle deep teal (#0D7377) ambient glow from the screen itself, casting light on the dark floor. Professional gym environment, cinematic lighting, Apple-style design, vertical 9:16 aspect ratio. NO TEXT — leave the top 25% of the image empty for typography overlay.
