Vintage Blueprint Infrastructure Bridge Poster

{
  "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": "[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": "[China coastal bay]",
    "subject": "sweeping elevated cross-sea highway bridge interchange over water",
    "composition": "high-angle viewpoint looking down at multiple curving bridge ramps in the foreground, a long bridge extending across the sea toward distant islands and mountains, wide open sky with flying birds",
    "details": "many slender bridge columns reflected in calm water, guardrails, street lamps, lane markings, small boats, distant ships, islands, shoreline mountains, trees and foliage in the lower foreground",
    "vehicles": "cars, sedans, vans, and a bus traveling along the elevated roadways"
  },
  "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": "No photorealistic color; render exclusively as delicate blue pen-and-ink drafting on warm off-white paper. Emphasize grand infrastructure scale, flowing bridge curves, precise technical perspective, and crisp bilingual poster typography. Maintain all specified Chinese and English text exactly."
}