I should focus on one or two key features that stand out. Let's pick AI-powered interactive learning and real-time translation. For example, an AI that explains complex concepts when you select text, and a translation tool that supports both Russian and English, with a dual-language view. Also, maybe a feature where the PDF becomes interactive, allowing users to manipulate equations or see diagrams in 3D.
I should focus on one or two key features that stand out. Let's pick AI-powered interactive learning and real-time translation. For example, an AI that explains complex concepts when you select text, and a translation tool that supports both Russian and English, with a dual-language view. Also, maybe a feature where the PDF becomes interactive, allowing users to manipulate equations or see diagrams in 3D.