復古巴黎旅行海報，以黑色地標剪影、艾菲爾鐵塔、城市字樣和老式汽車呈現

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{"input":{"city_name":"{{USER_INPUT_CITY}}"},"reference_style":{"use_uploaded_reference_images":true,"reference_images_define":["整體構圖","手工裁切絹印美學","醒目的黑色圖像剪影","有限的色彩調色盤","復古旅遊海報風格","粗糙的墨水質感","略帶不完美的手工邊緣","大型超尺寸城市字體","分層的地標排列","底部交通元素","奶油色／米白色紙張背景","極簡編輯式構圖"],"do_not_copy":["特定地標","特定城市名稱","特定車輛","特定配色組合","完全相同的字體排列","完全相同的地標位置"]},"generation":{"type":"復古城市旅遊海報","aspect_ratio":"3:4","resolution":"高","orientation":"直向","city_adaptation":{"primary_rule":"所有內容都必須圍繞使用者的 city_name 重新設計。","identify_city":true,"research_visual_identity":true,"landmarks":{"count":"4-7","selection":"自動選擇指定城市最具辨識度且視覺上最獨特的地標。","prioritize":["主要地標","歷史建築","現代建築地標","宗教或文化地標","橋樑或紀念碑","具辨識度的城市天際線元素"],"rendering":"將每個地標轉換為簡化而醒目的黑色絹印剪影，同時保留其可辨識的建築特色。"},"transportation":{"automatically_select":true,"instruction":"選擇與指定城市密切相關的交通工具，例如計程車、有軌電車、公車、地鐵列車、嘟嘟車、纜車、人力車、古典車、渡輪或其他具代表性的當地交通工具。","placement":"沿著底部邊緣的大型前景元素","style":"簡化的復古絹印插畫"},"colors":{"automatically_adapt":true,"instruction":"選擇受城市視覺識別、當地交通、旗幟、建築或文化色彩啟發的克制 2-4 色調色盤。","black":"主要圖像墨水色","background":"溫暖的做舊奶油色紙張","accent_colors":"具有城市特色且低彩度，絕不過度飽和"},"typography":{"text":"{{USER_INPUT_CITY}}","case":"大寫","style":"大型粗體、不規則、窄體展示字體","placement":"醒目地整合於地標之間或地標後方","texture":"粗糙的印刷墨水","alignment":"略帶不完美且自然有機","rule":"城市名稱必須拼寫完全正確並清晰可讀。"},"secondary_text":{"enabled":false,"instruction":"不要加入任意標語、日期、旅遊詞句、描述或其他可讀文字。"},"local_details":{"automatically_adapt":true,"instruction":"加入能立即強化指定城市特色的細微視覺細節，但不要讓構圖過於擁擠。"}},"composition":{"layout":"編輯式復古旅遊海報","landmarks":"圍繞字體動態排列","typography":"大型中央視覺焦點","foreground":"一個具代表性的城市交通元素","depth":"重疊極少的平面圖像分層","negative_space":"充足的奶油色留白","balance":"不對稱但視覺平衡","cropping":"讓選定的地標或交通工具自然延伸至邊緣"},"art_direction":{"medium":"手工拉製絹印／受木刻版畫啟發的旅遊海報","visual_language":["醒目的剪影","平面形狀","粗糙的墨水邊緣","可見的印刷顆粒","細微的墨水磨損","輕微的套色不準","手工製作的不完美","圖像編輯設計","受二十世紀中葉旅遊海報影響"],"linework":"強烈、厚實且簡化","texture":"真實的紙張顆粒與不均勻墨水覆蓋","finish":"呈現實體印刷作品，而非數位完美的向量藝術"},"background":{"color":"溫暖象牙色／做舊奶油色","texture":"細微的天然紙張纖維","pattern":"無","gradient":false},"quality":{"photorealism":false,"vector_perfection":false,"digital_gloss":false,"clean_modern_ui":false,"high_detail":true,"print_ready_appearance":true}},"constraints":{"user_controls_only":["city_name"],"model_controls":["地標選擇","地標排列","交通工具","色彩調色盤","在地視覺細節","字體構圖","圖像層級"],"must_have":["正確的城市名稱","來自該城市且具辨識度的地標","城市專屬的交通或移動元素","溫暖的奶油色紙張背景","醒目的黑色絹印形狀","大型城市字體","復古手工印刷質感","協調一致的旅遊海報構圖"],"avoid":["其他城市的地標","普通建築","一般化的觀光圖像","寫實渲染","3D 渲染","光澤漸層","霓虹色","現代企業海報設計","隨機文字","拼寫錯誤的城市名稱","額外標語","浮水印","標誌","AI 瑕疵","過於乾淨的向量邊緣"]},"output_instruction":"建立一張代表 {{USER_INPUT_CITY}} 的完整單一復古絹印旅遊海報。保留所提供參考圖像的藝術語言與視覺克制，但完全重新設計地標、交通工具、色彩點綴與在地細節，使其真實地屬於指定城市。"}

{
  "input": {
    "city_name": "{{USER_INPUT_CITY}}"
  },

  "reference_style": {
    "use_uploaded_reference_images": true,
    "reference_images_define": [
      "overall composition",
      "hand-cut screenprint aesthetic",
      "bold black graphic silhouettes",
      "limited color palette",
      "vintage travel poster character",
      "rough ink texture",
      "slightly imperfect handmade edges",
      "large oversized city typography",
      "layered landmark arrangement",
      "bottom transportation element",
      "cream/off-white paper background",
      "minimal editorial composition"
    ],
    "do_not_copy": [
      "specific landmarks",
      "specific city name",
      "specific vehicle",
      "specific color combinations",
      "exact typography arrangement",
      "exact landmark placement"
    ]
  },

  "generation": {
    "type": "vintage_city_travel_poster",
    "aspect_ratio": "3:4",
    "resolution": "high",
    "orientation": "portrait",

    "city_adaptation": {
      "primary_rule": "Everything must be redesigned around the user's city_name.",
      "identify_city": true,
      "research_visual_identity": true,

      "landmarks": {
        "count": "4-7",
        "selection": "Automatically select the most recognizable and visually distinctive landmarks of the specified city.",
        "prioritize": [
          "major landmark",
          "historic architecture",
          "modern architectural icon",
          "religious or cultural landmark",
          "bridge or monument",
          "recognizable skyline element"
        ],
        "rendering": "Convert each landmark into simplified bold black screenprint silhouettes while preserving its recognizable architectural identity."
      },

      "transportation": {
        "automatically_select": true,
        "instruction": "Choose a transportation vehicle strongly associated with the specified city, such as a taxi, tram, bus, metro train, tuk-tuk, cable car, rickshaw, classic car, ferry, or other iconic local transport.",
        "placement": "large foreground element along the bottom edge",
        "style": "simplified vintage screenprint illustration"
      },

      "colors": {
        "automatically_adapt": true,
        "instruction": "Select a restrained 2-4 color palette inspired by the city's visual identity, local transportation, flag, architecture, or cultural colors.",
        "black": "dominant graphic ink color",
        "background": "warm aged cream paper",
        "accent_colors": "city-specific and muted, never overly saturated"
      },

      "typography": {
        "text": "{{USER_INPUT_CITY}}",
        "case": "uppercase",
        "style": "large bold irregular condensed display lettering",
        "placement": "integrated prominently between or behind the landmarks",
        "texture": "rough printed ink",
        "alignment": "slightly imperfect and organic",
        "rule": "The city name must be perfectly spelled and clearly readable."
      },

      "secondary_text": {
        "enabled": false,
        "instruction": "Do not add arbitrary slogans, dates, tourist phrases, descriptions, or extra readable text."
      },

      "local_details": {
        "automatically_adapt": true,
        "instruction": "Add subtle visual details that immediately reinforce the identity of the specified city without overcrowding the composition."
      }
    },

    "composition": {
      "layout": "editorial vintage travel poster",
      "landmarks": "arranged dynamically around the typography",
      "typography": "large central visual anchor",
      "foreground": "one iconic city transportation element",
      "depth": "flat graphic layering with minimal overlap",
      "negative_space": "generous cream-colored negative space",
      "balance": "asymmetrical but visually balanced",
      "cropping": "allow selected landmarks or transportation to naturally extend toward the edges"
    },

    "art_direction": {
      "medium": "hand-pulled screenprint / linocut-inspired travel poster",
      "visual_language": [
        "bold silhouettes",
        "flat shapes",
        "rough ink edges",
        "visible print grain",
        "subtle ink distress",
        "slight registration imperfections",
        "handmade imperfections",
        "graphic editorial design",
        "mid-century travel poster influence"
      ],
      "linework": "strong, chunky and simplified",
      "texture": "authentic paper grain and uneven ink coverage",
      "finish": "physical printed artwork rather than digitally perfect vector art"
    },

    "background": {
      "color": "warm ivory / aged cream",
      "texture": "subtle natural paper fibers",
      "pattern": "none",
      "gradient": false
    },

    "quality": {
      "photorealism": false,
      "vector_perfection": false,
      "digital_gloss": false,
      "clean_modern_ui": false,
      "high_detail": true,
      "print_ready_appearance": true
    }
  },

  "constraints": {
    "user_controls_only": [
      "city_name"
    ],
    "model_controls": [
      "landmark selection",
      "landmark arrangement",
      "transportation",
      "color palette",
      "local visual details",
      "typographic composition",
      "graphic hierarchy"
    ],
    "must_have": [
      "correct city name",
      "recognizable landmarks from that city",
      "city-specific transportation or mobility element",
      "warm cream paper background",
      "bold black screenprint forms",
      "large city typography",
      "vintage handmade print texture",
      "cohesive travel-poster composition"
    ],
    "avoid": [
      "landmarks from other cities",
      "generic buildings",
      "generic tourist imagery",
      "photorealistic rendering",
      "3D rendering",
      "glossy gradients",
      "neon colors",
      "modern corporate poster design",
      "random text",
      "misspelled city name",
      "extra slogans",
      "watermarks",
      "logos",
      "AI artifacts",
      "overly clean vector edges"
    ]
  },

  "output_instruction": "Create a single finished vintage screenprint travel poster representing {{USER_INPUT_CITY}}. Preserve the artistic language and visual restraint of the supplied references, but completely redesign the landmarks, transportation, color accents and local details so they authentically belong to the specified city."
}