A clean vertical geological cross-section of a modern residential neighborhood. On the surface, simplified contemporary houses stand on green soil layers. Below ground, dark gray coal veins glow with intense orange and red heat gradients, showing heat and gas rising toward the surface. Crisp infographic lighting, clear separation of layers, sterile documentary style.. Context markers: modern residential house structures, geological cross-section graphic, glowing coal layers. 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
