A conceptual split-screen visual metaphor: rain falling on a peaceful surface town, while deep below, an unextinguishable subterranean coal fire absorbs and vaporizes all moisture before it can reach the source. High contrast red and blue thermal lighting.. Context markers: surface grass, subterranean glowing coal, water droplets evaporating in mid-earth. The complete visual composition—including all primary subjects, secondary supporting elements, boundaries, and environmental contours—must sit comfortably inside the canvas with generous clean white negative space visible on all four sides (target 8-12% margins, minimum 6%). The entire visual assembly must occupy maximum 80% canvas height and 84% canvas width. Nothing touches or crosses any canvas edge. Do not crop the primary subject. Clean isolated 2D explainer composition against pure white/off-white background. hand-drawn 2D explainer cartoon illustration, confident clean black outlines, flat cel-style colors, simplified readable forms, soft minimal shading, clear focal hierarchy, clean educational YouTube illustration, no photorealism, no 3D rendering, no typography, no text, no watermarks
