Modern advertising banner for "Doitong", dark theme UI style. Deep near-black background (#0A0A0C) with subtle purple-teal gradient glow. Bold white headline "Бесплатное обучение по нейросетям", accent word highlighted in mint-turquoise (#2DE0C0). Subheadline in light gray: "Все нейросети в одном месте · Оплата российской картой". Prominent rounded coral-orange CTA button (#FF6A4D) with text "Начать бесплатно →". Sleek minimalist layout, soft neon glow, rounded cards, clean sans-serif typography, high readability, professional tech aesthetic. 16:9.
