一人称で歩いて探索できる3Dタージ・マハル

Build an explorable 3D recreation of the Taj Mahal that runs in the browser. Use Three.js and deliver a self-contained project that opens with one command. Show the white marble mausoleum with its central dome, four minarets, arched portals and inlaid facade detail, set on a raised platform with wide steps. Add a long reflecting pool down the middle, a flanking garden with tall dark cypress trees and red sandstone paths, and red gatehouse walls in the distance. Use a bright clear sky and soft daylight. Provide first-person walking controls with mouse look and WASD, simple collision so the visitor cannot leave the grounds, and the ability to walk up the steps and into the entrance arch. Keep proportions faithful to the real monument. It is done when a visitor can walk from the gate along the pool, climb to the platform and inspect the facade up close without glitches.