Ascend — Scale Smarter, Not Harder — Référence de design web et prompt

# Recreate this site as a single HTML file: Ascend — Scale Smarter, Not Harder

You are an expert creative front-end developer. Produce a **single self-contained `index.html`**
that reproduces the project below **exactly** — same layout, sections, visuals, motion, and
interaction. Pure HTML/CSS/JS in one file: no build step, no framework, no bundler. Use ES modules
with a CDN importmap for the libraries. Hardcode every value given here as a fixed constant.
Rebuild each component described below as a section of the one file.

## What it is

A premium, immersive **SaaS landing page** for a fictional revenue-operations product called
**Ascend**. The whole page floats over a **fixed, full-viewport WebGL planet** — a GLTF Earth with