Spectrum visualization mapping adapted from ccnmtl/astro-simulations hydrogen-atom-simulator Spectrum.jsx (GPL-3.0). New absorption-line detective gameplay, original cases and interface. Spectral lines are a simplified representative teaching set; this is not a full stellar spectrum.
Repository https://github.com/ccnmtl/astro-simulations
Commit ac18acb933fdddb1c0be7c1ebc795c647420b8ae
Full editable adaptation: index.html, style.css, app.js; no build required.