diff --git a/docs/index.mdx b/docs/index.mdx
index 70814d9325a..68a8d33f3e6 100644
--- a/docs/index.mdx
+++ b/docs/index.mdx
@@ -18,7 +18,7 @@ This API reference includes:
 
 ### API Support
 
-integration@swan.io
+Contact your Swan technical contact, or submit a ticket through your Dashboard.
 
 ### Sales team
 
diff --git a/docusaurus.config.js b/docusaurus.config.js
index 2559a146926..21bfcd6bad2 100644
--- a/docusaurus.config.js
+++ b/docusaurus.config.js
@@ -61,14 +61,18 @@ module.exports = {
         {
           position: "right",
           href: "https://explorer.swan.io/",
-          label: "API Explorer",
+          label: "API Explorer", 
+          className: "swan-api-explorer"
         },
         {
-          position: "right",
-          href: "https://docs.swan.io/changelog",
-          label: "Changelog",
-          target: "_self",
-        },
+          type: "html",
+          position: "right", 
+          value: `<div class="swan-unified-nav">
+            <a href="https://docs.swan.io/changelog">Changelog</a>
+            <div class="separator"></div>
+            <a href="https://docs.swan.io/preview">Preview</a>
+          </div>`
+        }
       ],
     },
     // footer: {
@@ -102,6 +106,9 @@ module.exports = {
     [
       "@docusaurus/preset-classic",
       {
+        googleTagManager: {
+          containerId: 'GTM-NWPK43X',
+        },
         docs: {
           routeBasePath: "/",
           sidebarPath: require.resolve("./sidebars.js"),
diff --git a/src/components/SidebarAutoScroll/index.js b/src/components/SidebarAutoScroll/index.js
new file mode 100644
index 00000000000..185997295e2
--- /dev/null
+++ b/src/components/SidebarAutoScroll/index.js
@@ -0,0 +1,22 @@
+import { useEffect } from "react";
+
+export default function SidebarAutoScroll() {
+  useEffect(() => {
+    const activeLinks = document.querySelectorAll(".menu__link--active");
+    // Take the last in selection, as every ancestor link is also marked as active
+    const deepestActiveLink = activeLinks[activeLinks.length - 1];
+    if (deepestActiveLink == null) {
+      return;
+    }
+    const menu = deepestActiveLink.closest(".menu");
+
+    if (menu != null) {
+      const activeLinkRect = deepestActiveLink.getBoundingClientRect();
+      const menuRect = menu.getBoundingClientRect();
+      menu.scrollTop =
+        activeLinkRect.top - menuRect.height / 2 - activeLinkRect.height / 2;
+    }
+  }, []);
+
+  return null;
+}
diff --git a/src/css/custom.css b/src/css/custom.css
index ce42ad81e90..aa9c156a65e 100644
--- a/src/css/custom.css
+++ b/src/css/custom.css
@@ -106,13 +106,13 @@ body {
 }
 
 .markdown h2 {
-  font-size: 20px;
+  font-size: 24px;
   font-weight: 600;
 }
 
 .markdown h3 {
   font-size: 20px;
-  font-weight: 400;
+  font-weight: 600;
 }
 
 .docusaurus-highlight-code-line {
@@ -130,10 +130,6 @@ pre {
   line-height: 1.7;
 }
 
-/* .menu__list {
-   transition: none !important;
- } */
-
 .graphiql-container {
   flex-grow: 1;
 }
@@ -243,7 +239,128 @@ pre {
   }
 }
 
-.navbar__link[href="https://docs.swan.io/changelog"] svg
-{
-  display: none;
+.explorer-badge {
+  display: inline-flex;
+  align-items: center;
+  background: #e9e0f2;
+  border: 1px solid #c0b3e1;
+  border-bottom: none;
+  border-radius: 6px 6px 0 0;
+  padding: 8px 32px 8px 16px;
+  font-size: 14px;
+  color: var(--ifm-color-primary);
+  text-decoration: none;
+  font-weight: 600;
+  margin-left: 1rem;
+  cursor: pointer;
+  transition: all 0.2s ease;
+}
+
+.explorer-badge:hover {
+  background: var(--ifm-navbar-link-hover-color);
+  color: white;
+  text-decoration: none;
+  border-color: var(--ifm-color-primary);
+}
+
+.explorer-badge::before {
+  content: "🔍";
+  margin-right: 8px;
+}
+
+.tabs-container {
+  background: #fff;
+  border-radius: 10px;
+  box-shadow: 0 1px 4px 0 rgba(0, 0, 0, 0.04);
+  margin: 24px 0;
+  padding: 0 24px 24px 24px;
+  border: 1px solid #edeff3;
 }
+
+.tabs {
+  background: #eff3f9;
+  margin: 0 -24px;
+  padding: 3px 3px 0;
+  border-radius: 8px 8px 0 0;
+}
+
+.tabs__item {
+  padding: 0.75em 1.5em;
+}
+
+.tabs__item--active {
+  background: #fff;
+  color: var(--ifm-color-primary);
+  border-bottom: 2px solid var(--ifm-color-primary);
+  font-weight: 600;
+}
+
+html[data-theme="dark"] .tabs-container {
+  background: #1e293b;
+  border-bottom-color: #475569;
+}
+
+html[data-theme="dark"] .tabs {
+  background: #334155;
+}
+
+html[data-theme="dark"] .tabs__item--active {
+  background: #1e293b;
+}
+
+.navbar__link.swan-api-explorer,
+.swan-unified-nav {
+  padding: 0.5rem 1rem;
+  background: #f1f5f9;
+  border: 1px solid #cbd5e1;
+  border-radius: 8px;
+  font-weight: 500;
+  transition: all 0.65s ease;
+}
+
+.navbar__link.swan-api-explorer:hover,
+.swan-unified-nav:hover {
+  background: none;
+  border-color: #94a3b8;
+}
+
+.swan-unified-nav {
+  display: flex;
+  align-items: center;
+  padding: 0;
+  overflow: hidden;
+}
+
+.swan-unified-nav a {
+  padding: 0.5rem 1rem;
+  color: inherit;
+  text-decoration: none;
+  transition: background-color 0.2s;
+  position: relative;
+}
+
+.swan-unified-nav a::after {
+  content: '';
+  position: absolute;
+  bottom: 0;
+  left: 0;
+  width: 100%;
+  height: 2px;
+  background: #94a3b8;
+  transform: scaleX(0);
+  transition: transform 0.2s ease;
+}
+
+.swan-unified-nav a:hover {
+  opacity: 0.8;
+}
+
+.swan-unified-nav a:hover::after {
+  transform: scaleX(1);
+}
+
+.swan-unified-nav .separator {
+  width: 1px;
+  height: 20px;
+  background: #cbd5e1;
+}
\ No newline at end of file
diff --git a/src/theme/Root.js b/src/theme/Root.js
new file mode 100644
index 00000000000..63583944bda
--- /dev/null
+++ b/src/theme/Root.js
@@ -0,0 +1,11 @@
+import React from 'react';
+import SidebarAutoScroll from '../components/SidebarAutoScroll';
+
+export default function Root({ children }) {
+  return (
+    <>
+      {children}
+      <SidebarAutoScroll />
+    </>
+  );
+}
\ No newline at end of file