/* renal — tool CSS, retired in Chunk 4a.
   Every rule this file held is replaced by the Chunk 1 design system:
   .unit-toggle / .unit-btn became the .segmented control, .segmented,
   .example-row, .assumptions, .safety, .data-table, .graph-grid and
   .param-box.patient are gone (the .check, input[type="range"] and
   .drag-handle rules were dead rules copied in by migrate.py — this tool
   never used them). The .warn-inline and .plain-line rules moved to
   assets/style.css §27 (workbench), where they are shared with
   pk-quick. The .btn-row, .status, .export-bar and .table-wrap helpers
   stay in assets/tool-base.css. This file is kept (empty) so build.py
   still finds the per-tool stylesheet the manifest expects. */