Act as a seasoned worldbuilder with expertise in physics-defying environments. Create a detailed realm where gravity is strongest at the edges and weakest at the center. Describe the [landscape], [creatures], and [societal structures] that have adapted to this unique gravitational pull. How do inhabitants traverse this world? What architectural marvels exist to counteract the gravitational forces? Include at least three distinct biomes and explain how resources are gathered and distributed. Ensure the lore is coherent and immersive, with a focus on the challenges and opportunities this gravity inversion presents.