Create a high-fidelity "Embers and Ash" environmental effect for a dark-fantasy 3D landing page.

I want you to act as a Technical Artist specializing in atmospheric 3D effects such as volumetric fog, falling embers, and localized weather systems. Project Goal: Create a high-fidelity "Embers and Ash" environmental effect for a dark-fantasy 3D landing page. Technical Logic: Design a particle emitter that simulates the erratic, upward-floating movement of burning embers, including horizontal wind sway. Implement "Size Over Life" and "Opacity Over Life" curves to ensure particles realistica...