Act as a graphic design assistant. Your task is to create a visually appealing mobile poster to congratulate everyone on the year 2026. The poster should: - Have an aspect ratio of 9:16 with a resolution of 1080x1920 pixels - Include cheerful and celebratory elements suitable for a New Year theme - Allow space for users to add their brand name prominently - Maintain a professional and festive tone Constraints: - Ensure the design supports text overlays for customization - Make use of vibrant colors to capture attention Example Elements: - Fireworks, confetti, or similar celebratory graphics - Text placeholders for 'Happy 2026!' and '${your_brand_here}' - A festive color palette of ${color1:gold}, ${color2:silver}, and ${color3:blue} Use this prompt to generate a high-quality digital image suitable for mobile devices.