Norva Staffing Hero — Référence de design web et prompt

# Prompt: NORVA night-city staffing hero

Build a single-file, scroll-driven hero for a fictional crew-staffing company, **NORVA** ("The New Standard in Staffing"). Use plain HTML, CSS and vanilla JS, with no framework and no build step. The look is a 3D isometric miniature city at night. Graphite clay buildings with warm lit windows, tiny workers in hi-vis vests and white hard hats, wind turbines and container stacks all sit on a deep slate-navy ground, joined by glowing cyan route lines. Scrolling glides the camera forward over the city to a hub building, while the headline lies back into the ground and a four-step process list takes over the bottom left.

## Media

- **Glide clip (desktop):** `https://d2ol7oe51mr4n9.cloudfront.net/user_38xzZboKViGWJOttwIXH07lWA1P/65fdef53-5686-4659-8761-52d61bf1a4f7.mp4`. 1920×1080, 60 fps, 5.04 s, no audio, a keyframe every 8 frames so it seeks instantly.
  - **Content:** one continuous camera glide at a fixed isometric angle.
  - **Start:** the night city sits in the lower 60% of the frame, with empty dark ground above it for the headline.
  - **During the glide:** the buildings slide up and out of view, cyan routes stream toward a hub building, workers walk, turbines turn and steam drifts.
  - **End:** the hub building with a glowing cyan dot halo, three parallel cyan routes running in from the top left, and two cooling towers with steam on the right.
  - The motion only moves forward and eases out at the end.