Create an ultra-premium macaron advertising poster for a fictional patisserie "MAISON RÊVE". FORMAT: 4:5 vertical, elegant French dessert layout. SUBJECT: a delicate tower of pastel macarons in pink, mint and lavender, one splitting to show soft filling, tiny crumbs and edible flowers floating around. BACKGROUND: soft blush-to-cream gradient with delicate glow. LIGHTING: soft appetizing highlights, refined shine. TYPOGRAPHY: elegant French serif logo "MAISON RÊVE" top-center, tiny tagline "A dream in every bite" bottom. FINISH: 8k, hyper-realistic food photography, refined finish.