Asset credits

• Geiger counter noise — jo0ls. CC BY 3.0. Original audio retained; playback volume normalized and looped in Nuclear Winter.
• Wolf howls — U.S. Fish and Wildlife Service, public domain (U.S. federal government work). Original recording retained; the site plays a 1.4-second excerpt with gain normalization and short fades.
• Wolf silhouette — Nicu Buculei & odder, from Open Clip Art. CC0 / public domain. SVG modified: integral rock removed and paws redrawn; displayed mirrored and scaled on the mountain.
• Black Hole artwork is an original WebGL2 / GLSL geodesic renderer inspired by EHT's M87* image and NASA / Jeremy Schnittman's accretion disk visualization. Additional reference: NASA SVS: lensing and Doppler beaming. Light originates in the accretion disk. Schwarzschild null-ray integration with RK4 and a precomputed GPU intersection map; simplified thin-disk emission. Technical reference: Eric Bruneton, real-time high-quality black hole rendering. Reference images and source code are not embedded.
• Celestial behavior references: NASA: meteors and meteorites; NASA: eclipse geometry and twilight.