diff --git a/app/globals.css b/app/globals.css
index 13d40b8..7bac485 100644
--- a/app/globals.css
+++ b/app/globals.css
@@ -2,26 +2,53 @@
 @tailwind components;
 @tailwind utilities;
 
-:root {
-  --background: #ffffff;
-  --foreground: #171717;
-}
-
-@media (prefers-color-scheme: dark) {
-  :root {
-    --background: #0a0a0a;
-    --foreground: #ededed;
+@layer base {
+  body {
+    @apply bg-bg text-text-primary antialiased;
   }
 }
 
-body {
-  color: var(--foreground);
-  background: var(--background);
-  font-family: Arial, Helvetica, sans-serif;
-}
-
-@layer utilities {
-  .text-balance {
-    text-wrap: balance;
+@layer components {
+  .article-body {
+    @apply text-base leading-relaxed text-text-secondary;
+  }
+  .article-body p {
+    @apply mb-5;
+  }
+  .article-body h2 {
+    @apply text-2xl font-bold text-text-primary mt-9 mb-4;
+  }
+  .article-body h3 {
+    @apply text-xl font-semibold text-text-primary mt-7 mb-3;
+  }
+  .article-body strong {
+    @apply text-text-primary font-semibold;
+  }
+  .article-body a {
+    @apply text-accent underline hover:text-accent-hover;
+  }
+  .article-body ul {
+    @apply list-disc pl-6 mb-5 space-y-1;
+  }
+  .article-body ol {
+    @apply list-decimal pl-6 mb-5 space-y-1;
+  }
+  .article-body blockquote {
+    @apply border-l-4 border-accent bg-bg-card rounded-r-md pl-5 pr-4 py-3 my-6;
+  }
+  .article-body blockquote p {
+    @apply mb-0 italic;
+  }
+  .article-body img {
+    @apply rounded-md w-full my-6;
+  }
+  .article-body code:not(pre code) {
+    @apply bg-bg-card text-accent font-mono text-sm px-1.5 py-0.5 rounded;
+  }
+  .article-body pre {
+    @apply bg-bg-card rounded-md p-4 overflow-x-auto my-6 text-sm font-mono;
+  }
+  .article-body hr {
+    @apply border-border my-8;
   }
 }
diff --git a/tailwind.config.ts b/tailwind.config.ts
index d43da91..49c7011 100644
--- a/tailwind.config.ts
+++ b/tailwind.config.ts
@@ -1,19 +1,51 @@
-import type { Config } from "tailwindcss";
+import type { Config } from 'tailwindcss'
+import { fontFamily } from 'tailwindcss/defaultTheme'
 
 const config: Config = {
   content: [
-    "./pages/**/*.{js,ts,jsx,tsx,mdx}",
-    "./components/**/*.{js,ts,jsx,tsx,mdx}",
-    "./app/**/*.{js,ts,jsx,tsx,mdx}",
+    './app/**/*.{ts,tsx}',
+    './components/**/*.{ts,tsx}',
   ],
   theme: {
     extend: {
       colors: {
-        background: "var(--background)",
-        foreground: "var(--foreground)",
+        bg: {
+          DEFAULT: '#0D0D14',
+          elevated: '#171A21',
+          card: '#1D212B',
+        },
+        border: {
+          DEFAULT: '#2A3140',
+        },
+        accent: {
+          DEFAULT: '#00B4D8',
+          hover: '#00D4FF',
+        },
+        violet: '#7C3AED',
+        coral: '#D64545',
+        amber: '#FFB300',
+        green: '#00D166',
+        text: {
+          primary: '#F3F5F7',
+          secondary: '#B8C0CC',
+          muted: '#7D8795',
+          disabled: '#5C6470',
+        },
+      },
+      borderRadius: {
+        sm: '8px',
+        md: '12px',
+        lg: '16px',
+        xl: '20px',
+        '2xl': '28px',
+      },
+      fontFamily: {
+        sans: ['var(--font-inter)', ...fontFamily.sans],
+        jp: ['var(--font-noto-sans-jp)', ...fontFamily.sans],
       },
     },
   },
   plugins: [],
-};
-export default config;
+}
+
+export default config