浏览器中的 3D 办公室漫游，带骨骼人物和蓝图模式

Build an interactive 3D office walkthrough that runs in the browser with Three.js. Model a modern high-rise office floor with a reception desk and glowing logo wall, open-plan desks with chairs and monitors, a conference room, a private office with big windows onto a night city skyline, corridors and restrooms, with dark wood, white marble and warm accent lighting. Populate it with about thirty rigged people in suits who sit, stand and greet the visitor by name when approached. Offer a first-person mode with keyboard and mouse movement, clickable doors that open, an orbit view that shows the whole floor, and a blueprint view that shows a flat plan. Add small room labels and a minimal HUD. Deliver a deployable static site. Done means you can walk from the reception through every room, doors respond to clicks, and view modes switch smoothly.