Module css_value 

Universal CSS Value System for Dynamic Parsing

This module implements a flexible value system that can represent any CSS value type, enabling dynamic parsing and type mixing in parser sequences.

Key features:

• Universal CssValue enum for any parsed result
• Convenient property access (value.as_number(), etc.)
• Dynamic type checking and conversion
• Support for heterogeneous parser sequences

Enums

CssValue

Universal CSS value that can represent any parsed result