五个 Three.js 场景呈现未来感海岛豪宅，模型对比

Build a connected set of five self-contained Three.js scenes that together present a futuristic mansion on a private island. Scene one is an exterior orbit around the island, with water, waves and a sand ring. Scene two is a grand hall with a large crystal chandelier made of many small pieces and tall glass walls. Scene three is a pool area with a multi-lane slide tower and water. Scene four is a dark garage with neon strips and ten sports cars on display. Scene five is a rooftop helipad at sunset where a helicopter descends and lands on the lit pad. Keep a consistent visual style and lighting across all scenes, and let the camera move on its own in each. Deliver as HTML files with Three.js, one per scene. Done means every scene loads, animates and looks finished, including the water.