Halden AI Teammate Hero — Référence de design web et prompt

# Prompt: Halden, AI teammate for port operators (bowl-glow scroll hero)

Give me the superdetailed exact prompt to recreate this page exactly as it is, including the correct asset URL, all elements, animations, and fonts. This is that prompt.

## What it is

Build a B2B SaaS landing hero for a fictional maritime-logistics AI company, **Halden**, whose AI agent is called **Hal**. Use one HTML file with plain CSS and vanilla JavaScript: no framework, no build step, no libraries.

The page is three scenes stacked in one scroll:

1. **Hero.** A white page with a soft, rounded, **bowl-shaped sky-cyan glow** hanging from the top edge. It has a pale periwinkle rim and fades to white at the sides and bottom. Over it sit:
   - a floating white pill navbar;