高端AI演示平台封面设计

创建一个4:3高级演示文稿封面，介绍虚构的AI原生演示平台LUMEN DECK。采用优雅、极简、现代且具有商务高级感的初创企业视觉：柔和渐变背景带微妙空间深度，干净留白，精致英文字体和经过打磨的编辑式布局。主标题使用大写“LUMEN DECK”，副标题使用“AI PRESENTATION PLATFORM”。正文只保留以下简短英文说明：“Turn raw ideas into polished, high-impact presentations.”、“Start from notes, docs, links, or existing decks.”、“Generate beautiful, on-brand slides with AI.”、“Edit freely on a flexible canvas.”、“Export to PPT, PDF, or publish as a website.”。周围用小型高级标签展示“STORY-FIRST”“ON-BRAND DESIGN”“AI EDITING”“FREEFORM CANVAS”“PPT EXPORT”“TEAM COLLABORATION”。右下角使用小写虚构字标“lumen deck”。采用不对称构图、强烈留白和细微未来感，像咨询公司战略封面和高端软件产品主视觉的结合。不要使用Chronicle、真实网址、Apple、Linear、Notion或其他现实品牌、商标、水印；英文为唯一可读语言，所有文字必须清晰准确。

【English Prompt】
Create a premium 4:3 presentation cover introducing the fictional AI-native presentation platform LUMEN DECK. Use an elegant, minimal, modern business-startup aesthetic: a soft gradient background with subtle depth, clean whitespace, refined English typography, and a polished editorial layout. Set the large main title to “LUMEN DECK” in uppercase and the subtitle to “AI PRESENTATION PLATFORM”. Use only these concise English body lines: “Turn raw ideas into polished, high-impact presentations.”, “Start from notes, docs, links, or existing decks.”, “Generate beautiful, on-brand slides with AI.”, “Edit freely on a flexible canvas.”, and “Export to PPT, PDF, or publish as a website.” Add small premium feature labels: “STORY-FIRST”, “ON-BRAND DESIGN”, “AI EDITING”, “FREEFORM CANVAS”, “PPT EXPORT”, and “TEAM COLLABORATION”. Place the lowercase fictional wordmark “lumen deck” at bottom right. Use asymmetrical editorial balance, strong negative space, and a subtle futuristic touch, blending a consulting-grade strategy cover with a polished software-product hero image. Do not use Chronicle, any real URL, Apple, Linear, Notion, or other real brands, trademarks, or watermark; English is the only readable language and all lettering must be crisp and accurate.

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