A high-quality 3D animated image in a Pixar-inspired style. Leo (boy with brown hair, green shirt) and Maya (girl with curly hair, yellow dress) stand in the same lush park, looking amazed at a giant, magical birthday cake that has appeared on the grass. The cake is massive, decorated with blue and green frosting resembling Earth's continents, and has sparkling candles forming the number '4.5 BILLION'. Sparky the golden puppy is tilting his head in curiosity at the cake. The background shows ancient-looking stylized trees and a golden light filter to represent the passage of time. The characters' expressions are full of awe and wonder.. 3D animated style inspired by Pixar movies with vibrant colors, smooth textures, and expressive characters
