千禧年风格的拼贴海报

{
"variables": {
"CITY_NAME": "Chengdu"
},
"image_specs": {
"aspect_ratio": "4:5", "resolution": "2048x2560", "quality": "ultra", "style_strength": 0.8, "detail_level": "high", "sharpen": "medium"
},
"prompt": {
"master_visual_brief": "A high-energy Y2K-inspired editorial collage poster with a strong paper-cut and magazine print aesthetic. The entire image has a tactile paper texture with visible cut edges and layered depth. The theme centers around the city {{CITY_NAME}}. All visual elements, including background imagery, stickers, symbols, typography, and graphic decorations, are culturally and visually inspired by {{CITY_NAME}}. The composition follows a fashion magazine cover logic with dense but controlled information, playful energy, and strong visual hierarchy. The character is designed as a dominant half-body portrait occupying most of the poster.", "photography_and_character": "Character: a randomly generated young woman aged approximately 18–25. She is fashionable, attractive, and trendy, with no fixed hairstyle, hair color, facial features, or makeup. Her appearance varies naturally but always remains stylish and visually appealing. Fashion style is Y2K-inspired street fashion with playful silhouettes, layered styling, and trendy colors. Framing is a strict half-body portrait: the image is cropped at the waist or slightly above, and the lower body is not visible at all. Only the upper torso, shoulders, neck, and head are shown. Pose and gesture: the character performs a randomly selected Y2K-style dynamic pose with strong tension and attitude, including expressive arm extensions, angular elbow bends, asymmetrical shoulder twists, or forward-reaching gestures. Body language remains bold, confident, and energetic. Facial expression: the expression is slightly playful and friendly, with a hint of cuteness layered on top of confidence. Subtle smiles, softly open lips, bright eyes, or a relaxed playful look are allowed, while the overall attitude remains fashion-forward and dynamic rather than cute-only.", "camera_and_lighting": "Editorial portrait framing with a wide-angle look at close distance, optimized for half-body composition. The camera captures only the upper torso and head, with the lower body fully cropped out of frame. Perspective supports dynamic Y2K poses without distorting facial proportions. Lighting is soft, even, and magazine-style, avoiding harsh shadows. The subject is intended to be cut out and integrated into a paper collage rather than rendered as pure realism.", "graphic_design_layout": "Center-focused editorial collage layout. At the top, the city name '{{CITY_NAME}}' appears as the main headline in bold uppercase geometric sans-serif letters. Each letter is placed on an individual colored paper rectangle and arranged in a slight arc. The large half-body character overlaps and partially covers the headline and nearby graphic elements, creating a break-the-frame effect. Surrounding the character are floating paper stickers, speech bubbles, and cut-out graphics inspired by {{CITY_NAME}} culture, including local food, landmarks, symbols, street signs, and iconic objects. The bottom section features a full-width magazine-style collage footer composed of layered paper strips, bold button-style typography, small editorial text blocks, and thumbnail-style graphics.", "background_system": "The background is a black-and-white or desaturated urban street scene from {{CITY_NAME}}, such as crowds, architecture, or city textures. Background contrast is reduced and softened with grain so it supports the composition without competing with the main subject. The background is partially obscured by the large half-body character and collage elements and maintains a printed-paper appearance rather than photographic realism.", "materials_and_textures": "A consistent paper-based aesthetic across the entire image. Visible paper grain, halftone dots, print noise, and slight ink bleed. All elements appear as physical paper cut-outs layered together. Edges are imperfect and tactile. Stickers, typography, and characters cast subtle shadows to suggest layered depth. No glossy, metallic, or digital materials are present.", "composition_and_balance": "Clear and stable visual hierarchy: top city headline '{{CITY_NAME}}', central half-body character (upper torso only), dynamic Y2K-style pose with slightly playful facial expression, surrounding city-themed stickers, and bottom magazine-style collage footer. Strong overlaps between character, typography, and stickers create depth while preserving the established layout."
},
"constraints": {
"must_include": [ "City name headline using {{CITY_NAME}}", "Strict half-body portrait (waist-up only)", "Lower body completely cropped out", "Y2K-style dynamic pose with strong tension", "Playful but controlled facial expression", "Paper collage and cut-out magazine aesthetic", "City-specific background and stickers related to {{CITY_NAME}}", "Full-width magazine-style collage footer", "Visible paper texture and layered depth" ], "must_avoid": [ "Full-body view", "Visible legs, knees, thighs, or feet", "Neutral or stiff poses", "Overly cute or childish expressions", "Sexualized expressions or gestures", "Grotesque facial distortion", "Minimalist or empty layouts", "Glossy digital or 3D materials" ]
},
"negative_prompt": "full body, legs visible, knees, thighs, feet, stiff pose, neutral posture, childish expression, exaggerated cute face, sexualized expression, blurry face, deformed hands, extra fingers, bad anatomy, grotesque distortion, minimalist layout, flat image, hyper-realistic photography, glossy surfaces, plastic skin, dull colors, watermark, logo, unreadable text",
"typography_rules": {
"headline": { "text": "{{CITY_NAME}}", "font_style": "bold geometric sans-serif, uppercase", "treatment": "each letter on a separate colored paper rectangle, slightly arched, subtle shadow", "material": "printed paper cut-out" }, "supporting_text": { "style": "editorial magazine blocks, playful sticker captions, speech bubbles", "material": "paper-based printed texture" }
},
"rendering_notes": {
"depth_layers": "background city paper layer -> mid-ground half-body character -> foreground dynamic pose, expressive face, stickers, and typography", "print_feel": "strong magazine print texture with halftone dots, paper grain, and slight ink bleed", "edge_treatment": "clearly visible imperfect cut paper edges"
}
}

{
"变量": {
"城市名称": "成都"
},
"image_specs": {
"aspect_ratio": "4:5", "resolution": "2048x2560", "quality": "ultra", "style_strength": 0.8, "detail_level": "high", "sharpen": "medium"
},
“提示”: {
“主视觉简报”: “一款充满活力的千禧年（Y2K）风格编辑拼贴海报，采用强烈的纸张剪裁和杂志印刷美学。整个图像具有触感明显的纸张纹理，可见裁切边缘和多层深度。主题围绕城市{{城市名称}}展开。所有视觉元素——包括背景图像、贴纸、符号、文字排版和图形装饰——均受{{城市名称}}文化与视觉启发。构图遵循时尚杂志封面逻辑：信息密集但可控，充满活力且视觉层次清晰。人物设计为主导性半身肖像，占据海报主体。”
,
“摄影与人物”: “人物：随机生成的年轻女性，年龄约18–25 岁。形象时尚、有吸引力且潮流，发型、发色、面部特征和妆容无固定设定，自然变化但始终保持时尚且视觉出众。风格为 Y2K 街头风，造型层次丰富，色彩前卫。构图严格限定为半身肖像：画面裁剪至腰部或略上方，下半身完全不可见，仅展示上半身躯干、肩部、颈部和头部。姿势与手势：随机选择一种具有强烈张力与态度的 Y2K 动态姿势，包含伸展手臂、肘部锐角弯曲、不对称肩部扭转或向前延伸手势；肢体语言大胆、自信且充满活力。面部表情：表情略带俏皮友好，在自信基础上叠加一丝可爱感。允许轻微微笑、柔和的唇线、明亮的眼神或放松的玩味神态，但整体态度保持时尚前卫与动感，而非单纯可爱。”
,
“相机与光线”: “采用近距广角编辑肖像构图，专为半身呈现优化。相机仅捕捉上半身躯干和头部，下半身完全裁切出画。透视支持动态 Y2K 姿势而不扭曲面部比例。光照柔和均匀，符合杂志风格，避免强烈阴影。人物旨在作为可切割的纸张剪影融入拼贴，而非纯写实渲染。”
,
“图形设计布局”: “以中心为主导的编辑拼贴布局。顶部显示城市名称{{城市名称}}作为主标题，采用粗体大写几何无衬线字体。每个字母置于独立彩色纸矩形上，呈微弧排列。大型半身人物与标题及附近图形元素重叠并部分遮挡，形成突破画框效果。环绕人物的是漂浮的纸制贴纸、对话气泡和城市主题剪贴图形，受{{城市名称}}文化启发，包含当地美食、地标、符号、路牌和标志性物件。底部为全宽杂志风格拼贴页脚，由多层纸带、粗体按钮式文字、小型编辑文本块和缩略图风格图形组成。”
,
“背景系统”: “背景为{{城市名称}}的黑白或脱色街景（如人群、建筑或城市纹理），降低对比度并叠加颗粒以支持构图而不与主体竞争。背景被大型半身人物和拼贴元素部分遮挡，保持印刷纸外观而非摄影真实感。”
,
“材质与纹理”: “整个图像保持一致的纸质美学。可见纸张纹理、半色调网点、印刷噪点和轻微墨迹晕染。所有元素如层叠的实体纸片。边缘不完美且触感明显。贴纸、字体和人物投射微妙阴影，暗示层次感。无光泽、金属或数字材质。”
,
“构图与平衡”: “清晰稳定的视觉层次：顶部城市标题{{城市名称}}，中央半身人物（仅上半身），动态 Y2K 风格姿势，略带俏皮的面部表情，周围环绕城市主题贴纸，底部为杂志风格拼贴页脚。人物、字体和贴纸之间的强烈重叠在保持既定布局的同时营造层次感。”
},
“约束”: {
“必须包含”: [ “使用城市名称作为标题{{城市名称}}", “严格的半身像（仅腰部以上）", "下半身完全裁剪", "Y2K 风格的动态姿势，充满张力", "俏皮但克制的表情", "纸质拼贴和剪贴杂志风格", "与城市相关的背景和贴纸{{城市名称}} ", "全宽杂志风格拼贴页脚", "可见的纸张纹理和层次感" ], “必须避免”: [ "全身照", "可见的腿、膝盖、大腿或脚", "中性或僵硬的姿势", "过于可爱或幼稚的表情", "性化的表情或手势", "怪诞的面部扭曲", "极简主义或空白的布局", "光面数字或 3D 材质" ]
},
“负面提示”: “全身，腿部可见，膝盖，大腿，脚，僵硬姿势，中立姿势，幼稚表情，夸张可爱表情，性化表情，模糊面部，畸形手，多余手指，解剖结构错误，怪诞扭曲，极简布局，平面图像，超写实摄影，光滑表面，塑料皮肤，暗淡色彩，水印，标志，无法辨认的文字”,
“排版规则”: {
“标题”: { “正文”: "{{城市名称}}", “字体”: “粗体几何无衬线字体，大写”, “处理方式”: “每个字母位于单独的彩色纸矩形上，略微拱起，带有微妙的阴影", "材质": "印刷纸剪裁" }, “辅助文本”: { “风格”: "杂志社论版块，趣味贴纸标题，对话气泡", "材质": "纸质印刷纹理" }
},
“渲染注释”: {
“depth_layers": "背景：城市纸张层->中景：半身人物->前景：动态姿势、表情丰富的面部、贴纸和文字。", "print_feel": "强烈的杂志印刷纹理，带有半色调网点、纸张纹理和轻微的墨迹晕染。", "edge_treatment": "清晰可见的不完美裁切纸张边缘。"
}
}