Brutalist Switch

Mechanical Neo-Brutalist switch states and interaction contract

The housing stays fixed. The square thumb is the actuator.

• Off: paper track and ink thumb.
• On: sky-blue track and canary-yellow thumb; position remains the primary checked signal.
• Pressed: the track switches to coral and loses its hard shadow. Release restores the full structure.
• Focus: hard offset outline.
• Disabled: structure remains visible at reduced emphasis.