lost: Problem with flexbox in sass

I have problem with flex box. When I write the code in my style.sass

@lost flexbox flex

section 
  lost-center: 980px

div 
  lost-column: 1/3

Everything’s broken!! How I must write this @lost flexbox flex in style.sass?

About this issue

@sdale-fevo Here ya go:

.escape-at-rules(@literal) {
    @namespace ~"lostgrid; @{literal}";
}

.escape-at-rules("@lost flexbox flex");

It will produce:

@namespace lostgrid;
@lost flexbox flex;

Let me know if that works and we can add it to the Gotchas.