Every transition in Northwind answers a question: where did this come from, and where did it go? Panels grow out of the control that opened them and fold back the same way.

Springs carry the weight of a gesture, so a quick flick settles fast and a slow drag eases in. Nothing animates layout unless layout is the point.

Reduced motion is a first-class mode. Movement becomes a fade, and every state change still reads at a glance.

The result is an interface that feels quick on the first visit and calm on the hundredth.