The system of typefaces, sizes, and weights that establishes hierarchy and tone across all text.
The palette of color tokens and contrast pairs that gives the interface visual identity across light and dark themes.
The shared scale of gaps, padding, and margins that defines layout rhythm and keeps density predictable across components.
The corner-radius scale derived from one base token, shaping every surface from badges to modals.
The set of surface shades that signals depth by stepping lightness from background to card to overlay, not with shadows.
The easing curves and durations that govern how the interface moves while respecting reduced-motion preferences.