Design a premium minimal flat-vector travel poster for [CITY_NAME] in a 3:4 vertical for…

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