Post sui social media - Japanese Delivery Referral Banner

{"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_notes":"Keep the banner airy with most elements aligned to the upper half, strong negative space in the bottom center, crisp vector shapes, no people, no photo realism, and preserve the exact Japanese text placement and color hierarchy."}