hand-drawn 2D explainer cartoon illustration, thick clean black outlines, simplified readable forms, flat cel-style colors, soft minimal shading, expressive human characters, clean educational YouTube illustration, simple depth, clear focal hierarchy, no photorealism, no 3D rendering. Centered hero composition on a clean white background. Single 2D cartoon explorer in red hazmat suit standing in dense geothermal steam, with heavy water fog condensation covering suit helmet visor and oxygen valves, occupying central 50% of frame. Wide white negative margins, clear atmospheric moisture effect, flat cel colors, soft minimal shadows, no photorealism, no 3D, no text.
