Light Door — 3D AI Infrastructure Landing Page

A complete, scrollable aI infrastructure landing page with the 3D built into it: a lone figure before a towering door of light that you walk through on scroll. It is one self-contained HTML file, built entirely in code, with no image files, no 3D models and no build step. Under the hood: Three.js, light pool and long shadow computed in a floor shader, drifting mist layers, human rig silhouette (no model file), bloom, scroll walk-through to white. What a visitor can do: move to shift the view, scroll to walk through the door, click to pulse the light, 4 presets (White, Amber, Cyan, Rose). Best for: AI and infrastructure platforms, product launches and teasers, consultancies, conference sites. Three.js loads from a CDN through an import map and the type (Inter, Inter Tight) from Google Fonts, so there is still nothing to install. The page is real HTML — a navigation bar, a full-height hero, content sections, a call to action and a footer — so the brand name, headlines and cards are edited as plain text. Colours, counts and speeds sit in a CONFIG block and a PRESETS array, colour themes restyle the page and the 3D together from a small swatch pill, ?embed hides the pill and ?tour scrolls the page by itself.