How to get "pixel crisp" lines in layout and when exporting to pdf?
New to Affinity and new to vector/layout design. I have a book/article project I'm working on where the layout has a lot of straight, clean black lines. I only have experience in raster programs (specifically GIMP) where I would simply lay down a hard, three pixel thick line and know that it would appear crisp and exactly as drawn when output to .png. But with this program, my test pdfs all feature blurry, imprecise lines with some level of anti-aliasing, hinting, etc. And they don't scale cleanly as I zoom in, the way I would expect a png to keep its clean pixel edges at 200% or 400% zoom.
What's the best process for a pdf to have a hard edged, clean, two or three pixel line at its actual size?
I should note I am not working on this project to be printed, it would only be shared/viewed/used digitally. I understand DPI comes into play at some level but I don't have any idea what I should be setting DPI at.