Japanese Delivery Referral Banner

Prompt

{"type":"wide Japanese promotional web banner / social ad","canvas":{"aspect_ratio":"very wide 3:1","size":"1200x480","background":"deep navy to near-black solid gradient","border":"thin bright green line along the very top and very bottom edges","style":"clean flat vector UI, corporate delivery-service ad, high contrast typography"},"brand":{"position":"top-left","logo":"small rounded green square icon with a white downward triangle, next to bold white lowercase wordmark","text_lines":["menu","配達クルー"]},"layout":{"sections_count":5,"sections":[{"title":"brand block","position":"upper left","elements_count":2,"elements":["green app icon","white menu / 配達クルー logo text"]},{"title":"reward amount block","position":"left middle","elements_count":3,"elements":["small yellow text 最大","large yellow amount 15,000","yellow yen symbol 円 below, with a small green-and-white check/leaf accent overlapping the final zeros"]},{"title":"main campaign message","position":"upper center","elements_count":3,"elements":["large white headline 友達招待キャンペーン","smaller white subheadline 今なら紹介する人もされる人も","green emphasis line それぞれ15,000円ゲット！"]},{"title":"invite code card","position":"center lower","elements_count":2,"elements":["large red rounded rectangle","white label 招待コード and bold code RKE247"]},{"title":"eligibility/date block","position":"upper right","elements_count":3,"elements":["green rounded pill 東京・神奈川限定","small white text 20回配達でボーナス","white date range 2026/4/27 ～ 5/31"]}],"decorations_count":3,"decorations":["small gray X close icon in the extreme top-right corner","thin dark outlined irregular pentagon on the right side","small flat green delivery truck icon with dark wheels near the lower-right"]},"typography":{"headline":"bold Japanese sans-serif, white","numbers":"extra-large bold sans-serif, yellow","body":"clean sans-serif, white and green accents"},"color_palette":{"navy":"#070d1d","green":"#00a86b","yellow":"#ffc928","red":"#e72727","white":"#ffffff","gray":"#2b3140"},"text_content":{"headline":"{argument name=\"headline text\" default=\"友達招待キャンペーン\"}","subheadline":"{argument name=\"subheadline text\" default=\"今なら紹介する人もされる人も\"}","reward_text":"{argument name=\"reward amount\" default=\"15,000円\"}","invite_code":"{argument name=\"invite code\" default=\"RKE247\"}","region_offer":"{argument name=\"region offer text\" default=\"東京・神奈川限定 20回配達でボーナス\"}"},"composition_no...