in www/src/utils/particles.ts [341:355]
function resize(e) {
screenWidth = canvas.width = window.innerWidth;
screenHeight = canvas.height = window.innerHeight;
bufferCvs.width = screenWidth;
bufferCvs.height = screenHeight;
context = canvas.getContext('2d');
bufferCtx = bufferCvs.getContext('2d');
const cx = canvas.width * 0.5,
cy = canvas.height * 0.5;
grad = context.createRadialGradient(cx, cy, 0, cx, cy, Math.sqrt(cx * cx + cy * cy));
grad.addColorStop(0, 'rgba(0, 0, 0, 0)');
grad.addColorStop(1, 'rgba(0, 0, 0, 0.35)');
}