Centered dramatic high-stakes vignette on clean white canvas: a silhouetted miner dropping to one knee under heavy thermal heat distortion in glowing red emergency tunnel light, beside the silhouette a stylized abstract vertical survival time gauge rapidly draining into a red critical zone with an accelerating glowing red heartbeat pulse line, no numbers or digits, hand-drawn 2D explainer cartoon illustration, thick clean black outlines, simplified readable forms, flat cel-style colors, soft minimal shading, clean educational YouTube illustration, clear focal hierarchy, no photorealism, no 3D rendering, no typography, no text, no watermarks
