Prompt: A professional waist-up video of a [IDADE] [GÊNERO] with [TOM DE PELE] skin and [COR DO CABELO] hair. 
The person is sitting, wearing a plain [COR/ESTILO DA CAMISETA] and observing a screen off-camera with a calm, 
focused expression. The mouth remains completely closed throughout the video; no speaking or jaw movement. 
The person shows very slow and natural reactions, such as slight nodding, gentle blinking, and subtle eye movements.
 The motion is smooth and designed for a perfect seamless loop. Photorealistic, 4k, 1:1 aspect ratio.