优化：更新主色调

Author: c1921

frontend/src/style.css

@@ -18,7 +18,7 @@
   --color-base-200: oklch(23.26% 0.014 253.1);
   --color-base-300: oklch(21.15% 0.012 254.09);
   --color-base-content: oklch(97.807% 0.029 256.847);
-  --color-primary: oklch(70% 0.165 254.624);
+  --color-primary: oklch(54% 0.245 262.881);
   --color-primary-content: oklch(97% 0.014 254.604);
   --color-secondary: oklch(44% 0.043 257.281);
   --color-secondary-content: oklch(86% 0.022 252.894);