Motion System

Four springs. One signature.

MERIDIAN moves like a well-engineered piece of public hardware — weighted, decisive, calm, and fundamentally serious. Things settle the way an elevator door settles, the way a transit gate latches.

Settle

stiffness 180 · damping 26 · mass 1

1.5% overshoot · ~380ms · the default brand spring

Decisive

stiffness 320 · damping 36 · mass 1

0% overshoot · ~220ms · confirmations and state changes

Glacial

stiffness 110 · damping 25 · mass 1.4

0% overshoot · ~720ms · monumental / architectural surfaces

Spatial

stiffness 200 · damping 28.3 · mass 1

exactly critically damped · ~340ms · visionOS / Mesh — vestibular safety

These are the named tokens in 01_tokens/motion.tokens.json. No anonymous spring values exist in any MERIDIAN component. The 1.5% overshoot in Settle is the difference between “the panel arrived” and “the panel is alive.”