diff --git a/css/style.css b/css/style.css
index cf77c06..2a1bfd9 100644
--- a/css/style.css
+++ b/css/style.css
@@ -1619,3 +1619,92 @@ mark {
   .theme-btn { width: 26px; height: 26px; }
   .theme-btn svg { width: 14px; height: 14px; }
 }
+
+
+/* ==========================================================================
+   IMPACTMOJO BRAND UNIFICATION LAYER
+   Aligns Development Discourses with the shared library design system
+   (deep blue + teal). Loaded last so it wins. Light + dark defined
+   explicitly so the dark accent still overrides in dark mode.
+   ========================================================================== */
+
+:root {
+  --color-accent:        #235789;
+  --color-accent-hover:  #16416b;
+  --color-accent-light:  #e9f1f9;
+  --color-accent-2:      #2a9d8f;
+  --brand-grad:          linear-gradient(135deg, #235789 0%, #2a7ab0 55%, #2a9d8f 130%);
+  --brand-ring:          0 0 0 3px rgba(35,87,137,0.18);
+}
+[data-theme="dark"] {
+  --color-accent:        #6cb2ff;
+  --color-accent-hover:  #93c6ff;
+  --color-accent-light:  #16283c;
+  --color-accent-2:      #4fd1c5;
+  --brand-grad:          linear-gradient(135deg, #1b3b5c 0%, #23557f 55%, #1f5e57 130%);
+  --brand-ring:          0 0 0 3px rgba(108,178,255,0.22);
+}
+
+/* Brand mark → gradient chip (matches Dev Case Studies logo) */
+.brand-icon {
+  display: inline-flex; align-items: center; justify-content: center;
+  width: 26px; height: 26px; border-radius: 8px;
+  background: var(--brand-grad); color: #fff !important;
+  font-size: 1rem; box-shadow: var(--shadow-sm);
+}
+
+/* Ecosystem cross-links in the header nav */
+.eco-nav { display: inline-flex; align-items: center; gap: 14px; }
+.eco-link {
+  font-size: 0.85rem; font-weight: 600; color: var(--color-text-secondary);
+  border-bottom: 2px solid transparent; padding-bottom: 2px; white-space: nowrap;
+}
+.eco-link:hover { color: var(--color-accent); text-decoration: none; }
+.eco-link.current { color: var(--color-accent); border-bottom-color: var(--color-accent); }
+
+/* Stat numbers pick up the brand */
+.stat-number { color: var(--color-accent); }
+
+/* Cards: subtle lift + gradient accent strip on hover */
+.resource-card { position: relative; transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease; }
+.resource-card::before {
+  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
+  background: var(--brand-grad); opacity: 0;
+  border-radius: var(--radius-lg) var(--radius-lg) 0 0; transition: opacity 0.18s ease;
+}
+.resource-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
+.resource-card:hover::before { opacity: 1; }
+
+/* Bookmark button on cards */
+.rc-bookmark {
+  position: absolute; top: 10px; right: 10px; z-index: 2;
+  width: 30px; height: 30px; display: inline-flex; align-items: center; justify-content: center;
+  background: color-mix(in srgb, var(--color-surface) 82%, transparent);
+  border: 1px solid var(--color-border-light); border-radius: 8px;
+  color: var(--color-text-muted); cursor: pointer;
+  opacity: 0; transform: translateY(-2px); transition: all 0.15s;
+}
+.resource-card:hover .rc-bookmark,
+.rc-bookmark.saved,
+.rc-bookmark:focus-visible { opacity: 1; transform: translateY(0); }
+.rc-bookmark:hover { color: var(--color-accent); border-color: var(--color-accent); }
+.rc-bookmark.saved { color: var(--color-accent); border-color: var(--color-accent); background: var(--color-accent-light); }
+.rc-bookmark svg { width: 15px; height: 15px; }
+
+/* Saved toggle in the results tools */
+.tool-btn.active { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
+.tool-btn .saved-count {
+  display: none; margin-left: 6px; font-size: 0.66rem; font-weight: 700; line-height: 15px;
+  min-width: 15px; text-align: center; padding: 0 4px; border-radius: 8px;
+  background: var(--color-accent); color: #fff;
+}
+.tool-btn.active .saved-count { background: rgba(255,255,255,0.25); }
+.tool-btn .saved-count.visible { display: inline-block; }
+
+/* Footer: brand gradient top edge (matches Dev Case Studies) */
+.site-footer { border-top: 3px solid transparent; border-image: var(--brand-grad) 1; }
+
+/* Focus rings on the brand */
+a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
+  outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: 4px;
+}
diff --git a/icon.svg b/icon.svg
index 96b63d2..b7fdcae 100644
--- a/icon.svg
+++ b/icon.svg
@@ -1,5 +1,5 @@
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" width="512" height="512" role="img" aria-label="Development Discourses">
-  <rect width="512" height="512" rx="96" fill="#2563eb"/>
+  <rect width="512" height="512" rx="96" fill="#235789"/>
   <path d="M256 96 L400 256 L256 416 L112 256 Z" fill="none" stroke="#ffffff" stroke-width="28" stroke-linejoin="round"/>
   <circle cx="256" cy="256" r="42" fill="#ffffff"/>
 </svg>
diff --git a/index.html b/index.html
index 49bc29f..5616cce 100644
--- a/index.html
+++ b/index.html
@@ -21,7 +21,7 @@
 
     <!-- PWA -->
     <link rel="manifest" href="manifest.webmanifest">
-    <meta name="theme-color" content="#2563eb">
+    <meta name="theme-color" content="#235789">
     <link rel="icon" href="icon.svg" type="image/svg+xml">
     <link rel="apple-touch-icon" href="icon.svg">
     <link rel="search" type="application/opensearchdescription+xml" title="Dev Discourses" href="opensearch.xml">
@@ -71,6 +71,11 @@ <h1 class="site-title">Development Discourses</h1>
                 <p class="site-tagline">A curated open-access library for development practitioners in South Asia</p>
             </div>
             <nav class="header-nav">
+                <span class="eco-nav" aria-label="ImpactMojo libraries">
+                    <a href="https://varnasr.github.io/dev-case-studies/" class="eco-link">Case Studies</a>
+                    <a href="https://varnasr.github.io/development-discourses/" class="eco-link current" aria-current="page">Discourses</a>
+                    <a href="https://www.impactmojo.in/impactlex/" class="eco-link" target="_blank" rel="noopener">ImpactLex</a>
+                </span>
                 <a href="#about" class="nav-link">About</a>
                 <a href="https://www.impactmojo.in" class="nav-link" target="_blank" rel="noopener">ImpactMojo &nearr;</a>
                 <div class="theme-selector" role="group" aria-label="Theme selection">
@@ -195,6 +200,11 @@ <h1 class="site-title">Development Discourses</h1>
                             <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M16 3h5v5"></path><path d="M4 20 21 3"></path><path d="M21 16v5h-5"></path><path d="m15 15 6 6"></path><path d="M4 4l5 5"></path></svg>
                             <span>Surprise me</span>
                         </button>
+                        <button class="tool-btn" id="savedBtn" aria-pressed="false" title="Show only saved resources">
+                            <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M19 21l-7-5-7 5V5a2 2 0 0 1 2-2h10a2 2 0 0 1 2 2z"></path></svg>
+                            <span>Saved</span>
+                            <span class="saved-count"></span>
+                        </button>
                         <div class="export-menu">
                             <button class="tool-btn" id="exportBtn" title="Export the filtered list" aria-haspopup="true" aria-expanded="false">
                                 <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"></path><polyline points="7 10 12 15 17 10"></polyline><line x1="12" y1="15" x2="12" y2="3"></line></svg>
diff --git a/js/app.js b/js/app.js
index bf531da..b9b073a 100644
--- a/js/app.js
+++ b/js/app.js
@@ -20,8 +20,35 @@
     let currentSearch = '';
     let currentView = 'list';
     let displayCount = 50;
+    let savedOnly = false;
     const PAGE_SIZE = 50;
     const RECENT_KEY = 'imx_recent';
+    const BOOKMARK_KEY = 'imx_bookmarks';
+
+    // ---- Bookmarks (saved reading list) ----
+    function resKey(r) { return String(r.id || r.url || r.title || ''); }
+    function getBookmarks() {
+        try { return JSON.parse(localStorage.getItem(BOOKMARK_KEY)) || []; } catch (e) { return []; }
+    }
+    function isBookmarked(key) { return getBookmarks().indexOf(key) !== -1; }
+    function toggleBookmark(key) {
+        const m = getBookmarks(); const i = m.indexOf(key);
+        if (i === -1) m.push(key); else m.splice(i, 1);
+        try { localStorage.setItem(BOOKMARK_KEY, JSON.stringify(m)); } catch (e) { /* ignore */ }
+        return i === -1;
+    }
+    function bookmarkSvg(filled) {
+        return '<svg viewBox="0 0 24 24" fill="' + (filled ? 'currentColor' : 'none') +
+            '" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">' +
+            '<path d="M19 21l-7-5-7 5V5a2 2 0 0 1 2-2h10a2 2 0 0 1 2 2z"/></svg>';
+    }
+    function updateSavedCount() {
+        const el = document.querySelector('#savedBtn .saved-count');
+        if (!el) return;
+        const n = getBookmarks().length;
+        el.textContent = n;
+        el.classList.toggle('visible', n > 0);
+    }
 
     // DOM refs
     const searchInput = document.getElementById('searchInput');
@@ -252,6 +279,33 @@
             window.location.href = r.id ? 'resource.html?id=' + encodeURIComponent(r.id) : r.url;
         });
 
+        // Bookmark toggle on cards (card is a link, so stop navigation)
+        resourcesList.addEventListener('click', function (e) {
+            const btn = e.target.closest('.rc-bookmark');
+            if (!btn) return;
+            e.preventDefault();
+            e.stopPropagation();
+            const key = decodeURIComponent(btn.dataset.key || '');
+            const nowSaved = toggleBookmark(key);
+            btn.classList.toggle('saved', nowSaved);
+            btn.setAttribute('aria-pressed', String(nowSaved));
+            btn.setAttribute('title', nowSaved ? 'Saved — click to remove' : 'Save for later');
+            btn.innerHTML = bookmarkSvg(nowSaved);
+            updateSavedCount();
+            if (savedOnly) { displayCount = PAGE_SIZE; applyFilters(); }
+        });
+
+        // Saved-only toggle
+        const savedBtn = document.getElementById('savedBtn');
+        if (savedBtn) savedBtn.addEventListener('click', function () {
+            savedOnly = !savedOnly;
+            savedBtn.classList.toggle('active', savedOnly);
+            savedBtn.setAttribute('aria-pressed', String(savedOnly));
+            displayCount = PAGE_SIZE;
+            applyFilters();
+        });
+        updateSavedCount();
+
         // Export
         if (exportBtn) {
             exportBtn.addEventListener('click', function (e) {
@@ -327,6 +381,7 @@
         const terms = currentSearch ? currentSearch.split(/\s+/).filter(Boolean) : [];
 
         filteredResources = allResources.filter(r => {
+            if (savedOnly && !isBookmarked(resKey(r))) return false;
             if (currentTopic !== 'all' && r.topic !== currentTopic) return false;
             if (currentType !== 'all' && r.type !== currentType) return false;
             if (currentAccess !== 'all' && (r.access_type || 'check_access') !== currentAccess) return false;
@@ -448,8 +503,11 @@
             const typeLabel = r.type === 'grey_literature' ? 'Grey Lit' : capitalize(r.type);
             const accessClass = r.access_type || 'check_access';
             const accessLabel = accessLabelOf(accessClass);
+            const bkey = resKey(r);
+            const bsaved = isBookmarked(bkey);
 
             card.innerHTML = `
+                <button class="rc-bookmark${bsaved ? ' saved' : ''}" data-key="${encodeURIComponent(bkey)}" aria-pressed="${bsaved}" title="${bsaved ? 'Saved — click to remove' : 'Save for later'}" aria-label="Save resource">${bookmarkSvg(bsaved)}</button>
                 <div class="resource-card-header">
                     <span class="resource-type-badge ${typeClass}">${typeLabel}</span>
                     <span class="resource-title">${highlight(r.title, terms)}</span>
diff --git a/manifest.webmanifest b/manifest.webmanifest
index bfe8c8d..591cb84 100644
--- a/manifest.webmanifest
+++ b/manifest.webmanifest
@@ -6,7 +6,7 @@
   "scope": "./",
   "display": "standalone",
   "background_color": "#faf9f7",
-  "theme_color": "#2563eb",
+  "theme_color": "#235789",
   "lang": "en",
   "categories": ["education", "books", "reference"],
   "icons": [