A stunning photorealistic image of a hillside landscape during the golden hour, with a massive billboard that captures the viewer's attention as it rises majestically above the scene. The billboard is designed in the iconic style of the Hollywood sign, with bold white letters that spell out "PromptHero." The letters stand prominently against the lush backdrop of green hills and a blue sky streaked with wispy clouds. The sun casts a warm glow that enhances the brilliance of the letters and creates long, soft shadows on the hillside, while faint city lights twinkle in the distance, suggesting the proximity to a vibrant urban center. A few birds fly gracefully across the sky, adding a touch of life and movement to the serene setting.