TITLE: Descent — Eleven Thousand Metres Down FILE: 022-deep-sea-descent.html === PROMPT (exact prompt used) === Create "Descent — Eleven Thousand Metres Down", a scroll-driven journey from the ocean surface to the bottom of the Mariana Trench (~10,935 m). As you scroll, the background transitions through the ocean zones — sunlight (#1e90c8), twilight (#0b3a66), midnight (#04142b), abyssal (#020812) and hadal (#000204) — while a fixed depth gauge counts metres and shows the zone name, pressure (≈ 1 additional atmosphere per 10 m) and temperature notes. Illustrated SVG/canvas creatures appear at approximately correct depths: dolphins and sunlit fish near the top, jellyfish, a sperm whale (~1,000 m and deeper), an anglerfish with a glowing lure, a vampire squid, a gulper eel, amphipods, and finally the trench floor. Deeper creatures are bioluminescent, with pulsing blue/green light; marine snow drifts through the water; light rays from the surface fade out gradually. Short, accurate captions (keep claims general and well established). Interaction: scroll; in the dark zones the pointer is a faint torch revealing nearby creatures; clicking a creature opens a caption card. It ends with an elegant "Return to surface" button that smooth-scrolls up. SHARED REQUIREMENTS (apply to every page in this 100-page collection): 1. One standalone HTML5 file. All CSS inline in