I'm trying to understand how the blue lines animation works in the NextJS homepage and was hoping to see how to replicate. I have already dove in to inspect the elements and understand that stroke-width from path changes value just like x1 x2 y1 y2 in the linearGradient element, but how do you control them?

There's no animate under the svg where you typically expect to find it and I tried going through the JavaScript to find out how they do this animation, but still am not able to find it. I just need a simple replica of this animation.