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This interaction features a guest selection counter inside an Airbnb bottom sheet. As the user taps the plus button, the counter text updates and new illustrated characters pop into a horizontal lineup. The characters animate in with a bouncy spring physics effect, scaling up from the ground. As the line grows, the existing characters shift left to keep the group centered. When the counter reaches '16+', a surprise llama character springs into the end of the line, creating a delightful easter egg.
