style(table): 입력 칸 테두리 색 = 두 테마 변수 혼합(accent 60% · canvas) (241-2)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018jonfdxn1Xit9bdkNJpE4G

ui_template/ui_template_data_table.css

@@ -169,7 +169,7 @@
   padding: 0 var(--spacing-8);
   border: 0;
   background: transparent;
-  box-shadow: inset 0 0 0 1px var(--color-accent);
+  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--color-accent) 60%, var(--color-canvas));
   color: inherit;
   font: inherit;
   font-variant-numeric: tabular-nums;