add non-goals section to readme

Author: bartveneman

README.md

@@ -13,18 +13,7 @@ Built for speed and efficiency, this parser handles large CSS files with minimal
 - **Error recovery** - Continues parsing on malformed CSS
 - **Comment preservation** - Comments stored as first-class AST nodes
 - **Location tracking** - Line, column, offset, and length for all nodes
-- **Vendor prefix detection** - Automatic detection of `-webkit-`, `-moz-`, etc.
-- **Structured parsing** - Deep parsing of selectors, values, and at-rule preludes
-
-## Performance
-
-- **Tiny install size**
-- **Zero allocations during parsing** - all memory allocated upfront based on real world heuristics, which also helps prevent garbage collection running often
-- **Cache-friendly data layout** - contiguous memory for sequential access
-- **First-class comment and location support** - while still being performant because analysis requires constant access to lines and columns
-- **No syntax validation** - focusing only on the raw data we can skip expensive syntax files and MDN data syncs
-
-This parser was heavily influenced by [CSSTree](https://github.com/csstree/csstree), one of the most robust CSS parsers available.
+- **Built-in vendor prefix detection** - Automatic detection of `-webkit-`, `-moz-`, etc. for selectors, values, properties and more
 
 ## Installation
 
@@ -66,10 +55,24 @@ for (const rule of ast) {
 }
 ```
 
+## Performance
+
+- **Tiny install size**
+- **Zero allocations during parsing** - all memory allocated upfront based on real world heuristics, which also helps prevent garbage collection running often
+- **Cache-friendly data layout** - contiguous memory for sequential access powered by concepts or Data Oriented Design
+- **First-class comment and location support** - while still being performant because analysis requires constant access to lines and columns
+- **No syntax validation** - focusing only on the raw data we can skip expensive syntax files and MDN data syncs
+
+This parser was heavily influenced by [CSSTree](https://github.com/csstree/csstree), one of the most robust CSS parsers available.
+
 ## Documentation
 
 See [API.md](./API.md) for complete documentation of all parser functions and options.
 
+## Non-goals
+
+- **No syntax validation** - this parser does not try to validate your CSS structure. Everything can be anything
+
 ## License
 
 MIT