A Coat Becomes a Sail

Generate exactly one original editorial fashion photograph, portrait 3:4, text only with no reference pixels. An original adult male model in a cream linen coat stands on a narrow wheeled sailing board crossing an empty seaside promenade. The coat's long back panels rise continuously behind his shoulders into a taut triangular sail, held by one slim mast attached to the board. He grips the boom with both hands and leans naturally against the wind; recognizable cuffs, seams and coat hem remain visible within the sail. Low tracking camera, long shadow, azure water, chalk-white paving and one burnt-orange scarf. Photoreal fabric tension, credible balance and anatomy, joyful movement. No text, logos, recognizable celebrity or watermark.