One source of truth.

Every value in Thread resolves through four tiers: primitives hold the numbers, brand carries the fork between Macy's and Bloomingdale's, semantics give them roles, and components alias semantics. Brand, scheme, platform and density all switch by mode, so nothing rebinds.

Motion tokensLive
Five recipes pairing a duration with entering and exiting curves, plus the principles behind them.
Color tokensLive
The semantic roles for surface, background, foreground and border, in both schemes.
Type tokensLive
Display, heading and body, each style a trio of size, family and weight.
Space and radius tokensLive
Rhythm and roundness, across Comfortable and Compact.
Border tokensLive
Three stroke widths, and the rule for picking one.