TITLE: Alpenglow — A Day in the Mountains FILE: 091-alpenglow-day-cycle.html === PROMPT (exact prompt used) === Create "Alpenglow — A Day in the Mountains", a parallax landscape that cycles through a full day. Six procedurally generated mountain ridge layers (midpoint displacement) with atmospheric perspective (farther = lighter and bluer), a foreground lake reflecting sky and mountains with gentle ripples, pine silhouettes on the nearest ridge, and birds that occasionally cross. Time of day animates (or is scrubbed with a slider): pre-dawn indigo, sunrise with pink alpenglow on the peaks (#ff9eaa, #ffd6a5), bright noon blues, golden hour, sunset reds, dusk violets, and a starry night with a moon and the occasional meteor. The sun and moon follow arcs; sky gradients interpolate smoothly between keyframes; ridge colours are recomputed for each moment. Interaction: pointer parallax; a time slider with icons; "Play day" (60 seconds); clicking the sky regenerates the mountains from a new seed. Typography: a small, elegant sans showing the current time and a poetic name for each phase ("Blue hour"). SHARED REQUIREMENTS (apply to every page in this 100-page collection): 1. One standalone HTML5 file. All CSS inline in