/* =============================================================================
   Sudoku theme
   -----------------------------------------------------------------------------
   The ONLY file you edit to re-colour this product. Everything else is shared
   from /style.css. Change these two values to repaint the whole page.
   ========================================================================== */
:root {
  --accent: #3b82f6;          /* Sudoku blue */
  --accent-strong: #2563eb;   /* deeper blue for gradients + hover */
}