How to customize the style of equation numbering?

Questions
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3

Clever! This is a great solution.

I’d like to add an example of how I used this with the i-figured module:

#import "@preview/i-figured:0.2.4"

#set page(paper: "a7")
#set heading(numbering: "1")

#let custom-font = "Buenard"
#set text(font: custom-font)

#show heading: i-figured.reset-counters
#show math.equation: it => i-figured.show-equation(
  it, 
  numbering: (..n) => text(
    font: custom-font,
    strong(numbering("(1.1)", ..n))
  )
)

= Heading One 
$ y = x^2 + 1 $
$ y = x^2 + 2 $

= Heading Two
*#lorem(5)*
$ y = x^2 + 3 $

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