2026上海AI编码大赛科技风格海报

Create an image. International top-tier tech launch visual poster, minimalist futuristic design, deep pure black background, generous negative space, 9:16 vertical composition. Tech visual style similar to Apple, Toss, Notion and Linear. Clean minimalist 3D hero graphic; rendering quality: premium C4D / Octane Render look, frosted glass material. Typography and layout: centered composition. Theme: Shanghai AI Codi...