diff --git a/homer/assets/custom.css b/homer/assets/custom.css
index 25b9df7..a3da684 100755
--- a/homer/assets/custom.css
+++ b/homer/assets/custom.css
@@ -139,4 +139,71 @@ body #bighead .navbar a:focus, body #bighead .navbar a:hover {
 /* Hide theme toggle button only */
 .navbar-item[aria-label="Toggle dark mode"] {
     display: none !important;
+}
+
+/* Prod/Dev 버튼 스타일 */
+.prod-dev-buttons {
+    display: flex;
+    gap: 0.5rem;
+    margin-top: 0.75rem;
+    padding-top: 0.75rem;
+    border-top: 1px solid rgba(0, 0, 0, 0.1);
+}
+
+[data-theme="dark"] .prod-dev-buttons,
+.dark .prod-dev-buttons {
+    border-top-color: rgba(255, 255, 255, 0.1);
+}
+
+.env-button {
+    flex: 1;
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    gap: 0.5rem;
+    padding: 0.5rem 0.75rem;
+    border-radius: 0.5rem;
+    text-decoration: none;
+    font-weight: 600;
+    font-size: 0.875rem;
+    transition: all 0.2s ease;
+    border: 2px solid transparent;
+}
+
+.prod-button {
+    background-color: #48c774;
+    color: white;
+}
+
+.prod-button:hover {
+    background-color: #3ab66d;
+    transform: translateY(-1px);
+    box-shadow: 0 2px 4px rgba(72, 199, 116, 0.3);
+}
+
+.dev-button {
+    background-color: #ffdd57;
+    color: #363636;
+}
+
+.dev-button:hover {
+    background-color: #ffd83d;
+    transform: translateY(-1px);
+    box-shadow: 0 2px 4px rgba(255, 221, 87, 0.3);
+}
+
+.env-button i {
+    font-size: 0.875rem;
+}
+
+/* Production 카드의 기존 링크 비활성화 */
+.card[data-has-buttons] > a,
+.card[data-has-buttons] .card-content > a {
+    pointer-events: none;
+    cursor: default;
+}
+
+/* 버튼이 있는 카드의 하단 여백 조정 */
+.card:has(.prod-dev-buttons) .card-content {
+    padding-bottom: 0.5rem;
 }
\ No newline at end of file
diff --git a/homer/assets/custom.js b/homer/assets/custom.js
new file mode 100644
index 0000000..078d78b
--- /dev/null
+++ b/homer/assets/custom.js
@@ -0,0 +1,153 @@
+// Production 애플리케이션의 Prod/Dev URL 매핑
+const productionApps = {
+  'Joossam': {
+    prod: 'https://joossameng.com',
+    dev: 'https://dev.joossameng.com'
+  },
+  'Jaejadle': {
+    prod: 'https://jaejadle.kro.kr',
+    dev: 'https://dev.jaejadle.kro.kr'
+  },
+  'Jotion': {
+    prod: 'https://jotion.kro.kr',
+    dev: 'https://dev.jotion.kro.kr'
+  },
+  'Portfolio': {
+    prod: 'https://minjo0213.kro.kr',
+    dev: 'https://dev.minjo0213.kro.kr'
+  },
+  'Todo': {
+    prod: 'https://todo0213.kro.kr',
+    dev: 'https://dev.todo0213.kro.kr'
+  },
+  'Jovies': {
+    prod: 'https://jovies.kro.kr',
+    dev: 'https://dev.jovies.kro.kr'
+  }
+};
+
+// Production 카드에 Prod/Dev 버튼 추가
+function addProdDevButtons() {
+  // Production 섹션의 모든 카드 찾기
+  const productionSection = document.querySelector('[data-group="Production"]') || 
+                            Array.from(document.querySelectorAll('.group-title'))
+                            .find(el => el.textContent.trim() === 'Production')?.closest('.column');
+  
+  if (!productionSection) {
+    // 다른 방법으로 Production 섹션 찾기
+    const allCards = document.querySelectorAll('.card');
+    allCards.forEach(card => {
+      const titleElement = card.querySelector('.title');
+      if (titleElement && productionApps[titleElement.textContent.trim()]) {
+        addButtonsToCard(card, titleElement.textContent.trim());
+      }
+    });
+    return;
+  }
+
+  // Production 섹션 내의 모든 카드 찾기
+  const cards = productionSection.querySelectorAll('.card');
+  cards.forEach(card => {
+    const titleElement = card.querySelector('.title');
+    if (titleElement) {
+      const appName = titleElement.textContent.trim();
+      if (productionApps[appName]) {
+        addButtonsToCard(card, appName);
+      }
+    }
+  });
+}
+
+// 카드에 Prod/Dev 버튼 추가
+function addButtonsToCard(card, appName) {
+  // 이미 버튼이 추가되었는지 확인
+  if (card.querySelector('.prod-dev-buttons')) {
+    return;
+  }
+
+  const appUrls = productionApps[appName];
+  if (!appUrls) return;
+
+  // 기존 링크 제거 또는 비활성화
+  const existingLink = card.querySelector('a[href]');
+  if (existingLink) {
+    existingLink.style.pointerEvents = 'none';
+    existingLink.style.cursor = 'default';
+  }
+
+  // 버튼 컨테이너 생성
+  const buttonContainer = document.createElement('div');
+  buttonContainer.className = 'prod-dev-buttons';
+  
+  // Prod 버튼
+  const prodButton = document.createElement('a');
+  prodButton.href = appUrls.prod;
+  prodButton.target = '_blank';
+  prodButton.className = 'env-button prod-button';
+  prodButton.innerHTML = '<i class="fas fa-rocket"></i> Prod';
+  prodButton.title = 'Production Environment';
+  
+  // Dev 버튼
+  const devButton = document.createElement('a');
+  devButton.href = appUrls.dev;
+  devButton.target = '_blank';
+  devButton.className = 'env-button dev-button';
+  devButton.innerHTML = '<i class="fas fa-code-branch"></i> Dev';
+  devButton.title = 'Development Environment';
+  
+  buttonContainer.appendChild(prodButton);
+  buttonContainer.appendChild(devButton);
+  
+  // 카드의 content 영역에 버튼 추가
+  const cardContent = card.querySelector('.card-content') || card;
+  cardContent.appendChild(buttonContainer);
+}
+
+// DOM이 로드된 후 실행
+if (document.readyState === 'loading') {
+  document.addEventListener('DOMContentLoaded', () => {
+    // 약간의 지연을 두고 실행 (Homer가 카드를 렌더링할 시간 필요)
+    setTimeout(addProdDevButtons, 500);
+    // MutationObserver로 동적 콘텐츠 감지
+    observeChanges();
+  });
+} else {
+  setTimeout(addProdDevButtons, 500);
+  observeChanges();
+}
+
+// DOM 변경 감지하여 동적으로 추가된 카드에도 버튼 추가
+function observeChanges() {
+  const observer = new MutationObserver((mutations) => {
+    mutations.forEach((mutation) => {
+      if (mutation.addedNodes.length) {
+        mutation.addedNodes.forEach((node) => {
+          if (node.nodeType === 1) { // Element node
+            if (node.classList && node.classList.contains('card')) {
+              const titleElement = node.querySelector('.title');
+              if (titleElement && productionApps[titleElement.textContent.trim()]) {
+                addButtonsToCard(node, titleElement.textContent.trim());
+              }
+            }
+            // 자식 노드에서도 카드 찾기
+            const cards = node.querySelectorAll && node.querySelectorAll('.card');
+            if (cards) {
+              cards.forEach(card => {
+                const titleElement = card.querySelector('.title');
+                if (titleElement && productionApps[titleElement.textContent.trim()]) {
+                  addButtonsToCard(card, titleElement.textContent.trim());
+                }
+              });
+            }
+          }
+        });
+      }
+    });
+  });
+
+  observer.observe(document.body, {
+    childList: true,
+    subtree: true
+  });
+}
+
diff --git a/homer/config.yml b/homer/config.yml
index c73a9a9..f23a846 100644
--- a/homer/config.yml
+++ b/homer/config.yml
@@ -20,7 +20,7 @@ defaults:
   colorTheme: "light" # Set default theme to light mode
 
 # Optional columns
-columns: "4" # You can change this to any number that is a factor of 12: (1, 2, 3, 4, 6, 12)
+columns: "3" # You can change this to any number that is a factor of 12: (1, 2, 3, 4, 6, 12)
 
 # Optional colors
 colors:
@@ -59,6 +59,10 @@ websocket:
   url: "ws://localhost:8080"
   reconnectInterval: 5000
 
+# Custom HTML (for loading JavaScript)
+custom:
+  - '<script src="/assets/custom.js"></script>'
+
 # Optional services
 services:
   - name: "Production"
@@ -113,7 +117,7 @@ services:
         url: "https://jovies.kro.kr"
         target: "_blank"
 
-  - name: "Development"
+  - name: "Development Tools"
     icon: "fas fa-laptop-code"
     items:
       - name: "Chainlit"
@@ -148,22 +152,6 @@ services:
         keywords: "git gitea"
         url: "https://gitea0213.kro.kr"
         target: "_blank"
-      - name: "Goldilocks"
-        logo: "/assets/icons/goldilocks.svg"
-        subtitle: "Resource Management"
-        tag: "dev"
-        tagstyle: "is-warning"
-        keywords: "goldilocks resource management"
-        url: "https://goldilocks0213.kro.kr"
-        target: "_blank"
-      - name: "Homer Dashboard"
-        logo: "/assets/icons/favicon-32x32.png"
-        subtitle: "Dashboard"
-        tag: "dev"
-        tagstyle: "is-warning"
-        keywords: "dashboard"
-        url: "https://mayne.kro.kr"
-        target: "_blank"
       - name: "Minecraft Server"
         logo: "/assets/icons/minecraft.svg"
         subtitle: "Coming Soon"
@@ -180,14 +168,6 @@ services:
         keywords: "Auto Hot Reload"
         url: "https://tilt0213.kro.kr"
         target: "_blank"
-      - name: "Velero"
-        logo: "/assets/icons/velero.webp"
-        subtitle: "Backup & Disaster Recovery"
-        tag: "dev"
-        tagstyle: "is-warning"
-        keywords: "backup restore"
-        url: "https://velero0213.kro.kr"
-        target: "_blank"
 
   - name: "Infrastructure"
     icon: "fas fa-server"
@@ -200,21 +180,13 @@ services:
         keywords: "argocd gitops"
         url: "https://argocd0213.kro.kr"
         target: "_blank"
-      - name: "Falco"
-        logo: "/assets/icons/falco.svg"
-        subtitle: "Runtime Security"
+      - name: "Homer Dashboard"
+        logo: "/assets/icons/favicon-32x32.png"
+        subtitle: "Dashboard"
         tag: "infra"
         tagstyle: "is-info"
-        keywords: "falco security runtime"
-        url: "https://falco0213.kro.kr"
-        target: "_blank"
-      - name: "Grafana"
-        logo: "/assets/icons/grafana.svg"
-        subtitle: "Monitoring Dashboard"
-        tag: "infra"
-        tagstyle: "is-info"
-        keywords: "grafana monitoring"
-        url: "https://grafana0213.kro.kr"
+        keywords: "dashboard"
+        url: "https://mayne.kro.kr"
         target: "_blank"
       - name: "Kubernetes Dashboard"
         logo: "/assets/icons/kubernetes.svg"
@@ -224,38 +196,6 @@ services:
         keywords: "kubernetes k8s"
         url: "https://kubernetes0213.kro.kr"
         target: "_blank"
-      - name: "Longhorn"
-        logo: "/assets/icons/longhorn.webp"
-        subtitle: "Block Storage Management"
-        tag: "infra"
-        tagstyle: "is-info"
-        keywords: "longhorn storage"
-        url: "https://longhorn0213.kro.kr"
-        target: "_blank"
-      - name: "MinIO Console"
-        logo: "/assets/icons/minio.svg"
-        subtitle: "S3 Storage Management"
-        tag: "infra"
-        tagstyle: "is-info"
-        keywords: "minio s3 storage"
-        url: "https://minio0213.kro.kr"
-        target: "_blank"
-      - name: "PgWeb"
-        logo: "/assets/icons/postgresql.svg"
-        subtitle: "PostgreSQL Management"
-        tag: "infra"
-        tagstyle: "is-info"
-        keywords: "postgresql pgweb"
-        url: "https://pgweb0213.kro.kr"
-        target: "_blank"
-      - name: "Umami"
-        logo: "/assets/icons/umami.svg"
-        subtitle: "Website Analytics"
-        tag: "infra"
-        tagstyle: "is-warning"
-        keywords: "analytics umami"
-        url: "https://umami0213.kro.kr"
-        target: "_blank"
       - name: "Vault"
         logo: "/assets/icons/vault.svg"
         subtitle: "Secret Management"
@@ -264,6 +204,78 @@ services:
         keywords: "vault management"
         url: "https://vault0213.kro.kr"
         target: "_blank"
+      - name: "Velero"
+        logo: "/assets/icons/velero.webp"
+        subtitle: "Backup & Disaster Recovery"
+        tag: "infra"
+        tagstyle: "is-info"
+        keywords: "backup restore"
+        url: "https://velero0213.kro.kr"
+        target: "_blank"
+
+  - name: "Monitoring"
+    icon: "fas fa-chart-line"
+    items:
+      - name: "Falco"
+        logo: "/assets/icons/falco.svg"
+        subtitle: "Runtime Security"
+        tag: "infra"
+        tagstyle: "is-info"
+        keywords: "falco security runtime"
+        url: "https://falco0213.kro.kr"
+        target: "_blank"
+      - name: "Goldilocks"
+        logo: "/assets/icons/goldilocks.svg"
+        subtitle: "Resource Management"
+        tag: "monitoring"
+        tagstyle: "is-info"
+        keywords: "goldilocks resource management"
+        url: "https://goldilocks0213.kro.kr"
+        target: "_blank"
+      - name: "Grafana"
+        logo: "/assets/icons/grafana.svg"
+        subtitle: "Monitoring Dashboard"
+        tag: "monitoring"
+        tagstyle: "is-info"
+        keywords: "grafana monitoring"
+        url: "https://grafana0213.kro.kr"
+        target: "_blank"
+      - name: "Umami"
+        logo: "/assets/icons/umami.svg"
+        subtitle: "Website Analytics"
+        tag: "monitoring"
+        tagstyle: "is-info"
+        keywords: "analytics umami"
+        url: "https://umami0213.kro.kr"
+        target: "_blank"
+
+  - name: "Storage & Database"
+    icon: "fas fa-database"
+    items:
+      - name: "Longhorn"
+        logo: "/assets/icons/longhorn.webp"
+        subtitle: "Block Storage Management"
+        tag: "storage"
+        tagstyle: "is-info"
+        keywords: "longhorn storage"
+        url: "https://longhorn0213.kro.kr"
+        target: "_blank"
+      - name: "MinIO Console"
+        logo: "/assets/icons/minio.svg"
+        subtitle: "S3 Storage Management"
+        tag: "storage"
+        tagstyle: "is-info"
+        keywords: "minio s3 storage"
+        url: "https://minio0213.kro.kr"
+        target: "_blank"
+      - name: "PgWeb"
+        logo: "/assets/icons/postgresql.svg"
+        subtitle: "PostgreSQL Management"
+        tag: "storage"
+        tagstyle: "is-info"
+        keywords: "postgresql pgweb"
+        url: "https://pgweb0213.kro.kr"
+        target: "_blank"
 
   - name: "Demos"
     icon: "fas fa-code-branch"