完整地圖瀏覽包：保留全地圖、三態、13語、導覽及主圖旋轉。單件模型、GLB下載及原圖請使用素材包。
Python 3: python3 serve-offline.py
macOS: bash start.command
Windows: start.bat
No CDN or automatic internet access. Direct file:// opening is unsupported.
