How to use inline less code?

Question

css

In css, you can open a special tag and insert code between them:
<style>...</style>
How to use the same, but for LESS?
Tried like this:

<style rel="stylesheet/less" type="text/css">
@primary-color:#28C;
@primary-text-color:#FFF;
</style>
<link rel="stylesheet/less" type="text/css" href="style.less" />

Does not work. The variables are not available in the file.
How to solve the problem? (Variable values ​​are generated in PHP)

Answer 1

Don't use inline styles at all