# HELIO — A Living Star

Open `index.html` in a WebGL2-capable browser. No build step, external assets, or network connection is needed.

- **Drag** the sun to orbit the camera; **scroll** to zoom.
- Use the **Temperature**, **Turbulence**, and **Flare intensity** sliders to shape the simulation.
- Choose **Quiet**, **Active**, or **Storm** for quick presets. **Auto demo** starts immediately and continuously moves the camera and parameters; the button pauses or resumes it.

The sun is rendered by volumetric raymarching through a generated, animated 3D noise field in a fragment shader. Its corona and prominences are procedural, and a separate WebGL2 blur pass adds bloom.