Dynamic Athletic Sneaker Poster Prompt

Create a vertical 4:5 graphic-designed athletic shoe advertisement poster for a generic unbranded sneaker. An athlete is frozen mid-air in a dynamic explosive pose — leaping with knees tucked — proudly showing off big chunky joggers with [ACCENT COLOR — e.g. neon green] accent details on the sole, laces, and side panels. The sneakers are the hero: crisp detail on the knit texture, sole tread, and accent stitching. Compose it as a bold graphic poster: a dramatic diagonal background split in [BACKGROUND COLORS — e.g. deep charcoal and vivid accent color], strong poster typography with the headline [HEADLINE — e.g. "DEFY GRAVITY"] in heavy condensed type cutting across the composition, smaller supporting copy [SUPPORTING LINE] and a small tagline at the base. Speed lines and subtle motion blur around the athlete, energetic punchy color blocking, high-contrast lighting. No real brand logos or trademarks on the shoes, no watermark.