SEO fixes: team section, meta tags, footer consistency, broken links

- Add leadership team section to about.php with 4 team members
- Add visible FAQ section to homepage with accordion functionality
- Fix broken blog category link (legal-&-compliance → compliance)
- Add Twitter Card and og:image meta tags to data-cleaning.php and quote.php
- Add social links to 5 pages missing them (data-cleaning, quote, case-studies, blog/search, faq-enhanced)
- Standardize LinkedIn URLs across 24 blog files (remove www prefix)
- Fix social media placeholder links across 8 pages
- Optimize meta descriptions on 3 service pages (under 160 chars)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

quote.php

@@ -39,7 +39,16 @@ $breadcrumbs = [
     <meta property="og:url" content="<?php echo htmlspecialchars($canonical_url); ?>">
     <meta property="og:title" content="<?php echo htmlspecialchars($page_title); ?>">
     <meta property="og:description" content="<?php echo htmlspecialchars($page_description); ?>">
-    
+    <meta property="og:image" content="https://ukdataservices.co.uk/assets/images/ukds-main-logo.png">
+    <meta property="og:locale" content="en_GB">
+
+    <!-- Twitter Card -->
+    <meta name="twitter:card" content="summary_large_image">
+    <meta name="twitter:url" content="<?php echo htmlspecialchars($canonical_url); ?>">
+    <meta name="twitter:title" content="<?php echo htmlspecialchars($page_title); ?>">
+    <meta name="twitter:description" content="<?php echo htmlspecialchars($page_description); ?>">
+    <meta name="twitter:image" content="https://ukdataservices.co.uk/assets/images/ukds-main-logo.png">
+
     <!-- Favicon -->
     <link rel="icon" type="image/x-icon" href="assets/images/favicon.ico">
     
@@ -732,6 +741,10 @@ $breadcrumbs = [
             
             <div class="footer-bottom">
                 <p>&copy; <?php echo date('Y'); ?> UK Data Services. All rights reserved.</p>
+                <div class="social-links">
+                    <a href="https://linkedin.com/company/uk-data-services" aria-label="LinkedIn" target="_blank" rel="noopener noreferrer"><img src="assets/images/icon-linkedin.svg" alt="LinkedIn"></a>
+                    <a href="https://twitter.com/ukdataservices" aria-label="Twitter" target="_blank" rel="noopener noreferrer"><img src="assets/images/icon-twitter.svg" alt="Twitter"></a>
+                </div>
             </div>
         </div>
     </footer>