Strong rule: style --- 3D Pixar ---. 3D Pixar style. The board shows the Vieta formulas clearly: 'x₁ + x₂ = -p' and 'x₁ * x₂ = q'. The professor gives a thumbs-up to the camera. Bright, encouraging classroom environment.
Character appearance reference (MUST match exactly):
- Профессор Архимед: A friendly, energetic math professor in 3D Pixar style. He has messy white hair, round glasses, a neat beard, wearing a tweed jacket with elbow patches and a bright bow tie. Expressive face, warm smile, animated gestures.
