feat(config): add AI analysis tuning parameters and update related logic

frontend/postcss.config.js

@@ -1,6 +1,5 @@
 export default {
   plugins: {
-    tailwindcss: {},
-    autoprefixer: {},
+    "@tailwindcss/postcss": {},
   },
 };

frontend/src/styles.css

@@ -1,6 +1,5 @@
-@tailwind base;
-@tailwind components;
-@tailwind utilities;
+@import "tailwindcss";
+@config "../tailwind.config.js";
 
 @layer base {
   :root {
@@ -25,11 +24,14 @@
   }
 
   * {
-    @apply border-border;
+    border-color: hsl(var(--border));
   }
 
   body {
-    @apply bg-background text-foreground antialiased;
+    background-color: hsl(var(--background));
+    color: hsl(var(--foreground));
+    -webkit-font-smoothing: antialiased;
+    -moz-osx-font-smoothing: grayscale;
     font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
   }