Cross-system laboratory

Every axis is URL-backed. Theme preferences persist at the root; iframe updates stay scoped and retain their component owners.

Theme

Accent

Mode

Density

Radius

Motion

Direction

Locale

Viewport width

Viewport height

Baseline grid

Spacing outlines

Always show focus rings

Force state

Color vision

Reduced-vision blur

Performance meter

Drag the preview corner or edit its dimensions with the keyboard.