Flower Valley — Référence de design web et prompt

# Fernhollow — Night Flower Valley Hero (exact recreation prompt)

Give me a single-file, full-screen hero for a regenerative design studio called **Fernhollow**. It sits on top of an interactive 3D night valley of glowing flowers. A centred cream headline "Grown, not built." in tall condensed type sits over the valley, with a short caption, a round arrow button, a top nav and a sound toggle.

The valley is the 3D flower valley from gladeye.com, used with permission. It is not rebuilt. The page runs the original compiled engine: their webpack runtime and chunks, including three.js r154, the valley scene class, its shaders and its post-processing. It also loads their ten valley assets. The supplied **HTML Code** section contains everything inlined in one file: every script chunk, every asset as a base64 data URI, and both fonts. Use that file as the source of truth. The prompt below describes the interface layer and how the valley is started.

How the valley behaves (all from the original engine):
- **Flowers:** thousands of point-sprite flowers and leaves are scattered over a terrain map. Flowers bloom from small to full size as they approach the camera, and leaves grow in further back.
- **Camera path:** the camera flies along a path baked into `camera-path07.glb`. Wheel or touch moves along it through a virtual scroller (20× touch multiplier). When idle it drifts forward slowly by itself.
- **Mouse:** pushes every point on screen away from the cursor in screen space, with the strongest push close by. Points nearest the cursor glow, and the camera tilts slightly toward the mouse.
- **Effects:** bloom, a split-RGB noise pass, depth fog, light ray sprites, dust particles and a vignette that tightens as you move faster.
- **Hover transition:** `startHoverTransition()` eases the flight to a stop, disperses the flowers outward into floating glowing particles, and muffles the ambient sound through a low-pass filter. `stopHoverTransition()` reverses all of it.