Compare systems

System comparison now lives inside the Project drawer on the calculator.

1. Go to the BG System Wall Calculator.
2. Use Recommend by Requirements to find systems, then click Compare on 2–3 of them.
3. Open the green 🗂 Project basket button in the bottom-right to see the side-by-side comparison inside the drawer.

This standalone compare page is kept only for backwards compatibility. All new compare functionality is in the project drawer.