A4 vertical poster, 2480x3508 px, 300 dpi, explosive colorful gradient background, bright neon green, sunny yellow, vivid orange and rich purple, swirling ribbons of light, floating geometric shapes, confetti particles, dynamic motion, modern amusement park aesthetic, premium 3D design, glowing highlights, large white rounded central panel for text, strong visual focus on the center, cheerful and energetic atmosphere, high contrast, ultra sharp, print-ready, modern family entertainment center style, eye-catching from a distance, no logo, no watermark, no text
