"A single glowing light ribbon in vibrant blue and purple tones, set against a clean white background. The ribbon forms a smooth, flowing shape resembling a 'Z,' with gentle curves and minimal twists. The design dips gracefully in the middle and rises elegantly on both ends, creating a balanced and dynamic composition. The edges of the ribbon emit a soft, radiant glow, blending seamlessly with the white background, perfect for a sleek and modern poster design that conveys energy and upward momentum."