Brutalist Select
Rounded, flat-by-default Select over Base Select
Select keeps Base value-class presentation parts and selection semantics under a Neo-Brutalist surface language.
Trigger appearance
Section titled “Trigger appearance”The default Trigger follows the upstream Select: a flat 5px-rounded, 2px black frame with DM Sans 500. appearance="elevated" is an explicit Proto UI extension for a Trigger grouped with raised commands, such as the Header Runtime and Style controls. Its hard black shadow is 4px right/down at rest; hover or press moves the Trigger 4px right/down and removes that shadow. Press does not add another offset.
Set the prop on brutalist-select-trigger, not Root or Content. appearance="flat", omission, or removing the prop restores the flat default. size="sm" | "default", the paired fill/ink, focus ring, keyboard selection and disabled behavior are unchanged. Content stays flat in either appearance. Page CSS must not add a replacement shadow.