diff --git a/index.html b/index.html
index 9f93c7b..bb2ad33 100644
--- a/index.html
+++ b/index.html
@@ -81,11 +81,54 @@ <h2>Our Approach</h2>
                     <p>This three-layer approach, powered by our proprietary compliance engines, gives you the full picture — not just what the rules say, but what they <em>mean</em> for your operation.</p>
                 </div>
                 <div class="approach-visual">
-                    <div class="engine-badge">
+                    <a href="#engine-room" class="engine-badge">
                         <span class="engine-label">Powered by</span>
                         <span class="engine-name">The Engine Room</span>
-                        <span class="engine-desc">Five integrated compliance engines working together</span>
-                    </div>
+                        <span class="engine-desc">Five integrated compliance engines working together ↓</span>
+                    </a>
+                </div>
+            </div>
+        </div>
+    </section>
+
+    <!-- Engine Room Section -->
+    <section id="engine-room" class="section engine-room">
+        <div class="container">
+            <div class="badge">The Engine Room</div>
+            <h2>Five Compliance Engines</h2>
+            <p class="section-intro">Our proprietary toolkit — built from years of on-the-ground cannabis compliance experience across regulated markets.</p>
+
+            <div class="engines-grid">
+                <div class="engine-card">
+                    <div class="engine-card-icon">📦</div>
+                    <div class="engine-card-tag">Inventory</div>
+                    <h3 class="engine-card-name">KiloKeep</h3>
+                    <p>Inventory hygiene at scale. Keeps your METRC records clean, reconciled, and audit-ready — before discrepancies become violations.</p>
+                </div>
+                <div class="engine-card">
+                    <div class="engine-card-icon">🔬</div>
+                    <div class="engine-card-tag">Product Integrity</div>
+                    <h3 class="engine-card-name">PRFCTpack</h3>
+                    <p>COA inspection engine. Validates certificate of analysis data against packaging and labeling requirements to catch issues before product ever hits the shelf.</p>
+                </div>
+                <div class="engine-card">
+                    <div class="engine-card-icon">⚠️</div>
+                    <div class="engine-card-tag">Risk Intelligence</div>
+                    <h3 class="engine-card-name">RecallRepel</h3>
+                    <p>Predictive recall engine. Combines historical recall patterns with live METRC data to surface risk signals before they escalate into enforcement actions.</p>
+                </div>
+                <div class="engine-card">
+                    <div class="engine-card-icon">♻️</div>
+                    <div class="engine-card-tag">Waste Management</div>
+                    <h3 class="engine-card-name">RegulaGreen</h3>
+                    <p>End-to-end waste management compliance. Includes a standalone app that walks operators step-by-step through proper destruction procedures — no guesswork, no gaps.</p>
+                </div>
+                <div class="engine-card engine-card--evaluation">
+                    <div class="engine-card-icon">🤝</div>
+                    <div class="engine-card-tag">Vendor Network</div>
+                    <h3 class="engine-card-name">GuaranGreen</h3>
+                    <p>Peer-to-peer vendor rating system designed to connect cannabis operators with vetted, compliant supply chain partners.</p>
+                    <span class="engine-card-status">In Evaluation</span>
                 </div>
             </div>
         </div>
diff --git a/styles.css b/styles.css
index 7fb9a0a..73a1940 100644
--- a/styles.css
+++ b/styles.css
@@ -280,6 +280,13 @@ h3 {
     display: flex;
     flex-direction: column;
     gap: 12px;
+    text-decoration: none;
+    color: inherit;
+    transition: var(--transition);
+}
+
+.engine-badge:hover {
+    border-color: var(--color-primary);
 }
 
 .engine-label {
@@ -568,6 +575,92 @@ h3 {
     font-size: 0.85rem;
 }
 
+/* ===== Engine Room Section ===== */
+.engine-room {
+    background: var(--color-bg);
+}
+
+.engine-room .badge {
+    display: block;
+    text-align: center;
+    margin: 0 auto 16px;
+    width: fit-content;
+}
+
+.engines-grid {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 24px;
+    justify-content: center;
+}
+
+.engine-card {
+    background: var(--color-bg-card);
+    border: 1px solid var(--color-border);
+    border-radius: var(--border-radius);
+    padding: 32px;
+    flex: 1 1 280px;
+    max-width: 360px;
+    transition: var(--transition);
+    position: relative;
+}
+
+.engine-card:hover {
+    border-color: var(--color-primary);
+    transform: translateY(-4px);
+}
+
+.engine-card-icon {
+    font-size: 2rem;
+    margin-bottom: 16px;
+}
+
+.engine-card-tag {
+    font-size: 0.75rem;
+    font-weight: 600;
+    text-transform: uppercase;
+    letter-spacing: 0.1em;
+    color: var(--color-primary);
+    margin-bottom: 6px;
+}
+
+.engine-card-name {
+    font-size: 1.4rem;
+    font-weight: 700;
+    color: var(--color-text);
+    margin-bottom: 12px;
+}
+
+.engine-card p {
+    color: var(--color-text-muted);
+    font-size: 0.95rem;
+    line-height: 1.65;
+}
+
+.engine-card--evaluation {
+    border-style: dashed;
+    opacity: 0.75;
+}
+
+.engine-card--evaluation:hover {
+    opacity: 1;
+    border-style: dashed;
+    transform: none;
+}
+
+.engine-card-status {
+    display: inline-block;
+    margin-top: 16px;
+    padding: 4px 12px;
+    border: 1px solid var(--color-text-dim);
+    color: var(--color-text-dim);
+    border-radius: 50px;
+    font-size: 0.75rem;
+    font-weight: 600;
+    text-transform: uppercase;
+    letter-spacing: 0.08em;
+}
+
 /* ===== Responsive ===== */
 @media (max-width: 768px) {
     .section {