Affiche publicitaire pour sneakers - Prompt

A warm editorial vertical lifestyle sneaker poster (9:16 ratio). A young American white man with sharp jawline and defined facial features, wearing oversized cream linen pants and a beige crewneck, casually mid-stride with one foot forward shot from below at a low ground-level angle, confident and relaxed energy. Large earthy bold typography "WALK" in terracotta brown behind the figure. Brand name "DUNE" at the bottom. Taglines: "SLOW DOWN TO STAND OUT." / "MADE FOR THE JOURNEY." Sand-colored suede sneakers with terracotta sole in sharp foreground. Warm sandy gradient background with subtle dust particle atmosphere. Ultra photorealistic, 8K, no text overlays on subject, cinematic color grading.