Create a clean 500x500 circular Min...

Create a clean 500x500 circular Minecraft FFA arena with tall black-gradient outer walls. Divide the map into 4 equal biome sections: Amethyst, Badlands, Crimson Mushroom, and Dark Forest. Separate each section with a 1-block-wide bedrock border line, but do not leave gaps or missing chunks. Make the layout clean, intentional, and PvP-focused, not overly natural or messy. Each biome should stay clearly inside its own section with themed blocks, small terrain variation, and simple decorations. Add a floating central spawn with 4 paths leading into each biome. Avoid futuristic, sci-fi, neon, or overly organic terrain.