Eye-catching advertising banner for "Doitong" in modern dark UI style. Rich black gradient background (#08080A) with mint-turquoise and coral light streaks. Huge impactful headline "НЕЙРОСЕТИ — БЕСПЛАТНО", "БЕСПЛАТНО" glowing in mint-turquoise (#2DE0C0). Three short benefit lines with tiny neon icons: "Обучение с нуля", "Все ИИ в одном месте", "Оплата картой РФ". Bright coral-orange CTA button (#FF6A4D) "Открыть Doitong →". Trendy, energetic, high-contrast, ultra-readable bold sans-serif, soft glow, rounded corners. 16:9
