seekJobs: Use Tahoma for Thai fallback font

.changeset/silver-carpets-act.md

@@ -0,0 +1,18 @@
+---
+'braid-design-system': minor
+---
+
+---
+updated:
+  - seekJobs
+---
+
+**seekJobs:** Use Tahoma for Thai fallback font
+
+Currently in the `seekJobs` theme, the fallback font for the Thai character set resolves to the default system font which differs by operating system.
+By choosing a deterministic fallback that is available across operating systems, we can use [Capsize] to [improve the alignment] with the SEEK Sans web font, and reduce Cumulative Layout Shift for experiences that use Thai.
+
+Additionally, adding `sans-serif` as an ultimate fallback in the event that we ever fall all the way through the stack on an obscure operating system.
+
+[Capsize]: https://seek-oss.github.io/capsize/
+[improve the alignment]: https://github.com/seek-oss/capsize?tab=readme-ov-file#createfontstack

packages/braid-design-system/src/lib/themes/seekJobs/tokens.ts

@@ -19,7 +19,7 @@ export default makeTokens({
   tokenOverrides: {
     legacy: false,
     typography: {
-      fontFamily: 'SeekSans, "SeekSans Fallback", Arial',
+      fontFamily: 'SeekSans, "SeekSans Fallback", Arial, Tahoma, sans-serif',
       webFont: 'https://www.seek.com.au/static/shared-web/seeksans.css',
       fontMetrics: {
         capHeight: 783,