Create a stylish marketing poster featuring a blank central space for text, surrounded by vibrant abstract shapes and colors. Incorporate bold geometric patterns and fluid gradients in hues of electric blue, hot pink, and sunny yellow. The poster should have a modern, eye-catching layout that draws the viewer's attention but allows for easy customization with promotional content. Add a subtle textured background to enhance the overall visual appeal while maintaining a clean and professional look.

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Create a stylish marketing poster featuring a blank central space for text, surrounded by vibrant abstract shapes and colors. Incorporate bold geometric patterns and fluid gradients in hues of electric blue, hot pink, and sunny yellow. The poster should have a modern, eye-catching layout that draws the viewer's attention but allows for easy customization with promotional content. Add a subtle textured background to enhance the overall visual appeal while maintaining a clean and professional look.