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- Use clamp() for fluid sizing: `clamp(1rem

0.9rem + 0.5vw

- NEVER use vw units alone (breaks user zoom

accessibility violation)

- Free quality options: Source Serif

IBM Plex

- NEVER default to Arial

Helvetica

- Prioritize fonts with generous x-height

open counters

- Pair fonts by contrast (serif body + sans heading

or vice versa)

2. Build a type scale. Use 1.2-1.5x ratio steps from the base size. Do not pick arbitrary heading si...

H3 22px

When generating CSS

Tailwind classes

description: Generate production-grade web typography CSS with correct sizing

spacing

Web Typography

- Package validation: If exports or public types change

also run the repository's package-validation scripts if they exist (for example package-json lint

- Stuck / Hung Commands: You can use the timeout setting when using a tool if you suspect it might h...

the tool will stop tracking the command after that duration and return the output collected so far.

- Analysis: Use read_file

grep_search

- Avoid any type; use unknown with type guards

precise generics

- Deliver fixes that handle edge cases

include error handling

- Sometimes you may need to take other steps that aren't explicitly requests (running tests

checking for type errors

- Follow current

supported patterns and best practices; propose migrations when older or deprecated approaches are encountered.

- Error Handling: When parsing weird syntax

fail gracefully. Do not crash the linter process.

- Template-aware changes: When changing rule metadata

docs

- Break down PostCSS traversal logic into small

testable utility functions.

- If the template uses additional static docs metadata (for example description / recommended flags...

keep that authored metadata static and explicit.

- Custom Syntax Awareness: When a rule depends on syntax that does not exist in plain CSS

scope it carefully and document the expected customSyntax or file context.

- Utility Usage: Before writing a helper function

check whether the standard library

3. Edge cases (nested rules

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