Figma, and I got to the point of running it through SVGO and hand patching any constructs that had known issues with Safari.

Going based off the types of bugs I was seeing alone I wouldn't trust SVGs for anything but the most basic shapes.

Quickly rifling through a the sites of some huge extremely valuable brands, Apple, Coca Cola, Walmart, Target, and Toyota all use SVG for their logos. SVG is not the right choice to lay out documents. It's not a replacement for PDF. It's a perfect choice for creating discrete vector graphics.