{"type":"vertical infrastructure travel poster / technical line-art illustration","style":"cream paper background with monochrome blue ink, precise architectural drafting, fine hatching, blueprint-like contour lines, minimal vintage poster design, clean margins and thin border","format":{"aspect_ratio":"2:3 vertical poster","color_palette":"off-white paper and deep muted blue only"},"headline":{"text":"{argument name=\"headline text\" default=\"INFRASTRUCTURE\"}","position":"top","style":"very large widely spaced uppercase sans-serif letters"},"subheadings":{"count":3,"items":[{"text":"连接 · 流动 · 未来 CONNECTING · FLOWING · FUTURE","position":"under headline, left"},{"text":"中国 CHINA","position":"upper left"},{"text":"交通设施之美 / THE BEAUTY OF TRANSPORTATION","position":"upper right beside a tiny bridge icon"}]},"main_scene":{"location":"{argument name=\"location\" default=\"China coastal bay\"}","subject":"sweeping elevated cross-sea highway bridge interchange over water","composition":"high viewpoint looking down at multiple curving bridge ramps in the foreground, a long bridge extending across the sea to distant islands and mountains, wide open sky with small birds","details":"many slender bridge columns reflected in calm water, guardrails, street lamps, lane markings, small boats, distant ships, islands, shoreline mountains, trees and bushes in the lower foreground","vehicles":"cars, sedans, vans, and one bus traveling on the elevated roads"},"road_signage":{"count":5,"items":[{"description":"large overhead blue directional sign divided into 3 panels","position":"lower center","labels":["海滨路 / Haibin Rd. / 2 km","跨海大桥 / Cross-Sea Bridge / 500 m","机场 / Airport / 1 km"]},{"description":"electronic message board","position":"right of overhead sign","label":"安全出行 / 平安回家"},{"description":"round speed limit sign","position":"lower right","label":"80"},{"description":"round lane or turn instruction sign","position":"below speed limit sign","label":"curved arrow symbol"},{"description":"small rectangular regional-road warning sign","position":"bottom of sign stack","label":"区间测速 / 前方1km"}]},"human_element":{"count":1,"description":"one tiny cyclist riding on a separated pedestrian or bicycle path in the lower left foreground"},"footer_text":{"text":"交通连接城市 / 通达美好生活 / CONNECTING CITIES / ENRICHING LIFE","position":"bottom left"},"rendering_instructions":"Use no photorealistic color; keep everything as delicate blue pen-and-ink drafting on warm paper. Emphasize infrastructure scale, elegant bridge curves, precise perspective, and poster typography. Preserve the visible Chinese and English text exactly as specified where possible."}