The interaction begins on an onboarding screen showing a single card with a toggle switch. Tapping the card triggers a fan-out animation, revealing five distinct hand-drawn cards arranged in an arc. Each card is fully interactive: tapping the cheese card triggers a rapid wiggle and a full-screen inverted flash; tapping the blue dots card causes the dots to bounce and shift; tapping the cherry card swings it like a pendulum; and tapping the target card pulses. The animations use spring physics to create a tactile, toy-like feel that perfectly introduces the app's core concept of interactive cards.

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