Mars Trips — Référence de design web et prompt

# Redline — Mars Trips Three-Step 3D Hero (exact recreation prompt)

Build a single-file, full-viewport landing hero for **Redline**, a space-travel brand selling seats to Mars. It is one continuous three-step experience with no page loads:

1. **MARS:** a real 3D Mars swells from a speck in front of a giant white word, on a burnt-orange background.
2. **THARSIS:** the planet slides left and turns, a region lights up crimson like a territory on a map, and a timeline of landing sites appears on the right with a hover photo card.
3. **Landing:** the camera dives into the planet, whites out in a dust cloud, and a photoreal Mars canyon rises up, with the site name sitting between the background and foreground rock spires, plus a white booking bar.

Plain HTML, CSS and vanilla JS in one file, with Three.js r170 from an import map: `{ "imports": { "three": "https://cdn.jsdelivr.net/npm/three@0.170.0/build/three.module.js" } }`. Every moving value is computed each frame in one `render(now)` function from a single state float `st`. Reproduce every value, string, URL and timing below exactly.

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