A photorealistic billboard set against the backdrop of rolling Los Angeles hills, resembling the iconic Hollywood sign. The letters spell "PromptHero" in bold, white, three-dimensional lettering, slightly curved to mimic the landscape. Sunlight casts dramatic shadows on the letters, while a few scattered clouds drift in a bright blue sky. A group of palm trees sways gently in the distance, and a flock of birds can be seen flying overhead, enhancing the grandeur of the scene.