Can I use .SCSS in my HubSpot?

Hi, can I use .scss exstenion with my HubSpot landing page?

HubSpot is unable to compile SCSS to CSS so you would need to compile this code prior to uploading to your HubSpot account. This is pretty easy to do using the HubSpot CLI. Install the HubSpot CLI - HubSpot docs

Another option is to use HubL to do a lot of the functionality SCSS can do. For me, the only thing HubL can’t do is class nesting. Here is an example of how HubL could be used. cms-theme-boilerplate/src/css at main · HubSpot/cms-theme-boilerplate · GitHub
With HubL you can do variables, macros (like mixins), operators, conditions, etc.