蓝色射灯照射的空舞台绿色背景幕布图片

Help me generate an image: The open stage background of the AI large model launch event extends from the floor to the top, covered with pure green without light or shadow changes, making it easy for post?processing to cut out and replace content. No obstructions in front, an empty camera shows the full view of the stage. The stage floor is pure black, paired with cold blue top spotlights, full of tech vibe. The main subject is centered, occupying three?quarters of the frame, fully within the frame. 16:9 landscape, realistic AI launch event photography style.