为 [CITY_NAME] 设计一款高级感极简扁平矢量风格的旅行海报,采用 3:4 竖版格式。

Design a premium minimal flat-vector travel poster for [CITY_NAME] in a 3:4 vertical format. Typography (top-left): - [CITY_NAME] - A short, elegant English caption that reflects the city’s atmosphere Create a refined travel poster with a soft stationery-inspired aesthetic, featuring an airy, luxurious postcard feel. Background Use a pure white or near-white background. Keep the upper-left typography area spacious, clean, and mostly empty. Avoid peach, cream, beige, warm washes, or paper-textured backgrounds. Warm colors may appear only in architectural elements, flowers, clothing, café details, or small decorative objects. City-Specific Scene Customize the composition according to [CITY_NAME]. Feature one iconic landmark as the primary focal point in the center or background. Include subtle city details such as local architecture, a small café or street shop, transport signage, a slim street lamp, trees, flower pots, and other refined local touches. A secondary landmark may appear very small in the distant background, but it should remain subtle and never compete with the main landmark. Avoid crowded landmark collages or overly busy city scenes. People Include only 3–5 people. Show calm everyday interactions such as: - two people chatting at a café table - one person walking peacefully - one person taking a photo - optionally one person sketching or jogging Avoid crowds or a single dominant character. Composition Preserve large negative white space in the upper-left area. Position the main landmark clearly in the middle or background. Place the café or shop to one side. Keep the overall layout balanced, simple, open, and uncluttered. Do not overcrowd the upper area with branches, birds, flowers, clouds, or decorative elements. Style - Soft stationery illustration aesthetic - Premium sticker-like illustration - Minimal flat-vector poster style - Clean thin outlines - Uniform line weight - Flat colors only - Rounded shapes - Tiny dot eyes - Simple facial features - Elegant graphic composition Color Palette Use these colors softly on objects only: - blush pink - dusty rose - sage green - warm cream - soft beige - muted gray-green Do not apply these colors as a full background wash. Mood The poster should feel: minimal, elegant, calm, refined, romantic, clean, and premium. It should resemble a travel postcard, greeting card, wall art print, book cover, or lifestyle branding visual. Caption Rule Generate one short English caption (3–7 words). The caption should feel poetic, elegant, simple, and relevant to the city. Avoid clichés, exclamation marks, or promotional travel language. Negative Prompt No realism No photorealism No watercolor No painterly effects No gradients No shading No textures No peach background No beige background wash No dense backgrounds No crowded streets No excessive landmark collages No overly detailed architecture

为 [CITY_NAME] 设计一款高级感极简扁平矢量风格的旅行海报,采用 3:4 竖版格式。 排版(左上角): - [CITY_NAME] - 一句简短优雅的英文副标题,呼应城市氛围 打造一款精致的旅行海报,呈现柔和的文具插画美学,拥有通透、轻奢的明信片质感。 背景 使用纯白或近白色背景。 保持左上角排版区域开阔、干净、大面积留白。 避免使用桃色、奶油色、米色、暖色晕染或纸质纹理背景。 暖色仅可出现在建筑元素、花卉、人物服饰、咖啡馆细节或小型装饰物件上。 城市场景 根据 [CITY_NAME] 定制构图。 选择一座标志性建筑作为主要视觉焦点,置于画面中央或背景中。 融入细腻的城市细节,例如本地建筑、小咖啡馆或街边小店、交通标识、纤细的街灯、树木、花盆以及其他精致的本土元素。 可在远景中非常小地出现次要地标,但应保持含蓄,绝不与主地标争抢视觉重点。 避免拥挤的地标拼贴或过于繁杂的城市场景。 人物 仅出现 3–5 个人。 展现平静自然的日常互动,例如: - 两人坐在咖啡桌旁聊天 - 一人平静地散步 - 一人正在拍照 - 可选一人写生或慢跑 避免人群或单一突出的角色。 构图 保留左上角大面积的负白空间。 主要地标应明确居于画面中部或背景中。 将咖啡馆或小店置于一侧。 整体布局保持平衡、简洁、通透、不拥挤。 不要在上方区域堆叠树枝、飞鸟、花朵、云朵或装饰元素。 风格 - 柔和文具插画美学 - 高级贴纸式插画 - 极简扁平矢量海报风格 - 干净的细线描边 - 统一的线条粗细 - 仅使用扁平色块 - 圆润造型 - 点状小眼睛 - 简洁的面部特征 - 优雅的图形构图 色彩 仅在物体上柔和使用以下颜色: - 腮红粉 - 灰玫瑰 - 鼠尾草绿 - 暖奶油色 - 柔和米色 - 雾感灰绿 不要将这些颜色作为整面背景的底色。 氛围 海报应呈现: 极简、优雅、宁静、精致、浪漫、干净、高级。 让人联想到旅行明信片、贺卡、墙面艺术装饰画、书籍封面或生活方式品牌视觉。 副标题规则 生成一句简短的英文副标题(3–7 个单词)。 副标题应诗意、优雅、简洁,并与城市相关。 避免陈词滥调、感叹号或推销式旅行用语。 负面提示 无写实 无照片写实 无水彩 无绘画感效果 无渐变 无阴影 无纹理 无桃色背景 无米色背景底色 无密集背景 无拥挤街道 无过度堆叠的地标 无过于精细的建筑