Cinematic fitness ring product ad

Create a cinematic, ultra-realistic product advertisement of a sleek black smart fitness ring with a glowing green sensor on the inside. The ring is placed at the center of the image, slightly tilted, casting a soft shadow on a smooth, dark brown matte surface. The background is minimalistic, in a rich, dark chocolate brown gradient with soft lighting. Add modern bold white text at the top-left corner: 'Wellbeing Reimagined.' and below it in smaller font: 'powered by data and innovation'. In the top-right corner, include a dark rounded button with white text: 'Talk to an expert' and a headset icon. At the bottom-center of the image, place a dark rounded button with the white text: 'Buy X2 @ 20% off'. Ensure the overall aesthetic is premium, clean, Gen Z-inspired, and technology-forward.