Unicode support in LaTeX has not been an issue since XeTeX became mature technol...

leephillips · on May 28, 2020

Exactly. You can even markup math using Unicode. Here is Stokes' Theorem:

\[ ∫_Σ ∇ ⨯ 𝐅 ⋅ dΣ = ∮_{∂Σ}𝐅⋅d𝐫 \]

That will turn into a typeset version when run through LaTeX (using the unicode-math package). More details at https://lwn.net/Articles/657157/.

Also, any format except PDF is problematic. PDF is the only (widely used) format that will preserve formatting.