diff --git a/sites/lexsiebels.de/index.html b/sites/lexsiebels.de/index.html
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index 0000000..d712cf6
--- /dev/null
+++ b/sites/lexsiebels.de/index.html
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+<!DOCTYPE html>
+<html lang="de">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Lex Siebels — Knowledge Lawyer, Patent & UPC</title>
+    <meta name="description" content="Matthias Siebels — Knowledge Lawyer bei Hogan Lovells. Patentrecht, Unified Patent Court, IP-Strategie, Legal Tech.">
+    <meta property="og:title" content="Lex Siebels — Knowledge Lawyer, Patent & UPC">
+    <meta property="og:description" content="Patentrecht. UPC. Legal Tech. — Die juristische Seite von Matthias Siebels.">
+    <meta property="og:type" content="website">
+    <meta property="og:url" content="https://lexsiebels.de">
+    <link rel="preconnect" href="https://fonts.googleapis.com">
+    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+    <link href="https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&family=Inter:wght@300;400;500;600&display=swap" rel="stylesheet">
+    <style>
+        *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
+
+        :root {
+            --navy: #1a1f36;
+            --navy-light: #232847;
+            --navy-dark: #12152a;
+            --gold: #c8a46e;
+            --gold-dim: rgba(200, 164, 110, 0.15);
+            --gold-glow: rgba(200, 164, 110, 0.08);
+            --text: #e0ddd5;
+            --text-dim: #9a9689;
+            --text-bright: #f5f3ee;
+            --serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
+            --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
+        }
+
+        html { scroll-behavior: smooth; }
+
+        body {
+            font-family: var(--sans);
+            background: var(--navy-dark);
+            color: var(--text);
+            line-height: 1.7;
+            font-weight: 300;
+            overflow-x: hidden;
+        }
+
+        /* --- Decorative elements --- */
+        body::before {
+            content: '';
+            position: fixed;
+            top: 0; left: 0; right: 0; bottom: 0;
+            background:
+                radial-gradient(ellipse 80% 60% at 20% 10%, rgba(200,164,110,0.03) 0%, transparent 60%),
+                radial-gradient(ellipse 60% 80% at 80% 90%, rgba(200,164,110,0.02) 0%, transparent 60%);
+            pointer-events: none;
+            z-index: 0;
+        }
+
+        .container {
+            max-width: 860px;
+            margin: 0 auto;
+            padding: 0 2rem;
+            position: relative;
+            z-index: 1;
+        }
+
+        /* --- Hero --- */
+        .hero {
+            min-height: 100vh;
+            display: flex;
+            flex-direction: column;
+            justify-content: center;
+            align-items: center;
+            text-align: center;
+            padding: 4rem 2rem;
+            position: relative;
+        }
+
+        .hero::after {
+            content: '';
+            position: absolute;
+            bottom: 0;
+            left: 50%;
+            transform: translateX(-50%);
+            width: 60px;
+            height: 1px;
+            background: var(--gold);
+            opacity: 0.4;
+        }
+
+        .hero-label {
+            font-family: var(--sans);
+            font-size: 0.75rem;
+            font-weight: 500;
+            letter-spacing: 0.3em;
+            text-transform: uppercase;
+            color: var(--gold);
+            margin-bottom: 2.5rem;
+            opacity: 0;
+            animation: fadeUp 0.8s ease 0.2s forwards;
+        }
+
+        .hero h1 {
+            font-family: var(--serif);
+            font-size: clamp(3rem, 8vw, 5.5rem);
+            font-weight: 700;
+            color: var(--text-bright);
+            letter-spacing: -0.02em;
+            line-height: 1.1;
+            margin-bottom: 1.5rem;
+            opacity: 0;
+            animation: fadeUp 0.8s ease 0.4s forwards;
+        }
+
+        .hero h1 .lex {
+            color: var(--gold);
+        }
+
+        .hero-subtitle {
+            font-family: var(--serif);
+            font-size: clamp(1.1rem, 2.5vw, 1.4rem);
+            font-weight: 400;
+            font-style: italic;
+            color: var(--text-dim);
+            letter-spacing: 0.02em;
+            opacity: 0;
+            animation: fadeUp 0.8s ease 0.6s forwards;
+        }
+
+        .hero-rule {
+            width: 40px;
+            height: 1px;
+            background: var(--gold);
+            margin: 2rem auto;
+            opacity: 0;
+            animation: fadeUp 0.8s ease 0.7s forwards;
+        }
+
+        .hero-tagline {
+            font-size: 0.85rem;
+            font-weight: 400;
+            color: var(--text-dim);
+            letter-spacing: 0.08em;
+            opacity: 0;
+            animation: fadeUp 0.8s ease 0.8s forwards;
+        }
+
+        /* --- Sections --- */
+        section {
+            padding: 5rem 0;
+        }
+
+        .section-border {
+            border-top: 1px solid rgba(200, 164, 110, 0.1);
+        }
+
+        .section-label {
+            font-family: var(--sans);
+            font-size: 0.7rem;
+            font-weight: 500;
+            letter-spacing: 0.25em;
+            text-transform: uppercase;
+            color: var(--gold);
+            margin-bottom: 2rem;
+        }
+
+        .section-heading {
+            font-family: var(--serif);
+            font-size: clamp(1.6rem, 3.5vw, 2.2rem);
+            font-weight: 600;
+            color: var(--text-bright);
+            margin-bottom: 1.5rem;
+            line-height: 1.3;
+        }
+
+        .section-text {
+            font-size: 1rem;
+            color: var(--text);
+            max-width: 640px;
+            line-height: 1.8;
+        }
+
+        .section-text strong {
+            color: var(--text-bright);
+            font-weight: 500;
+        }
+
+        /* --- Profil --- */
+        .profil-grid {
+            display: grid;
+            grid-template-columns: 1fr;
+            gap: 2rem;
+        }
+
+        .profil-text {
+            font-size: 1.05rem;
+            line-height: 1.85;
+            color: var(--text);
+        }
+
+        .profil-meta {
+            display: flex;
+            flex-wrap: wrap;
+            gap: 1.5rem;
+            margin-top: 1.5rem;
+        }
+
+        .profil-meta-item {
+            font-size: 0.8rem;
+            color: var(--text-dim);
+            letter-spacing: 0.03em;
+        }
+
+        .profil-meta-item span {
+            display: block;
+            color: var(--text-bright);
+            font-weight: 500;
+            font-size: 0.9rem;
+            margin-top: 0.2rem;
+        }
+
+        /* --- Schwerpunkte --- */
+        .focus-grid {
+            display: grid;
+            grid-template-columns: repeat(2, 1fr);
+            gap: 1.5rem;
+            margin-top: 2rem;
+        }
+
+        .focus-card {
+            background: var(--navy);
+            border: 1px solid rgba(200, 164, 110, 0.08);
+            border-radius: 4px;
+            padding: 1.8rem;
+            transition: border-color 0.3s ease, background 0.3s ease;
+        }
+
+        .focus-card:hover {
+            border-color: rgba(200, 164, 110, 0.25);
+            background: var(--navy-light);
+        }
+
+        .focus-card h3 {
+            font-family: var(--serif);
+            font-size: 1.1rem;
+            font-weight: 600;
+            color: var(--text-bright);
+            margin-bottom: 0.6rem;
+        }
+
+        .focus-card p {
+            font-size: 0.88rem;
+            color: var(--text-dim);
+            line-height: 1.6;
+        }
+
+        .focus-card .focus-tag {
+            display: inline-block;
+            font-size: 0.65rem;
+            font-weight: 500;
+            letter-spacing: 0.12em;
+            text-transform: uppercase;
+            color: var(--gold);
+            margin-bottom: 0.8rem;
+        }
+
+        /* --- Projekte --- */
+        .projects {
+            display: flex;
+            flex-direction: column;
+            gap: 2rem;
+            margin-top: 2rem;
+        }
+
+        .project-card {
+            display: flex;
+            gap: 2rem;
+            align-items: flex-start;
+            padding: 2rem;
+            background: var(--navy);
+            border: 1px solid rgba(200, 164, 110, 0.08);
+            border-radius: 4px;
+            transition: border-color 0.3s ease;
+        }
+
+        .project-card:hover {
+            border-color: rgba(200, 164, 110, 0.2);
+        }
+
+        .project-icon {
+            flex-shrink: 0;
+            width: 48px;
+            height: 48px;
+            border-radius: 50%;
+            background: var(--gold-dim);
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            font-family: var(--serif);
+            font-size: 1.1rem;
+            font-weight: 700;
+            color: var(--gold);
+        }
+
+        .project-content h3 {
+            font-family: var(--serif);
+            font-size: 1.15rem;
+            font-weight: 600;
+            color: var(--text-bright);
+            margin-bottom: 0.4rem;
+        }
+
+        .project-content h3 a {
+            color: inherit;
+            text-decoration: none;
+            border-bottom: 1px solid rgba(200, 164, 110, 0.3);
+            transition: border-color 0.3s ease;
+        }
+
+        .project-content h3 a:hover {
+            border-color: var(--gold);
+        }
+
+        .project-content p {
+            font-size: 0.9rem;
+            color: var(--text-dim);
+            line-height: 1.7;
+        }
+
+        .project-tag {
+            display: inline-block;
+            font-size: 0.65rem;
+            font-weight: 500;
+            letter-spacing: 0.1em;
+            text-transform: uppercase;
+            color: var(--gold);
+            background: var(--gold-dim);
+            padding: 0.2rem 0.6rem;
+            border-radius: 2px;
+            margin-top: 0.8rem;
+        }
+
+        /* --- Footer --- */
+        footer {
+            padding: 4rem 0 3rem;
+            border-top: 1px solid rgba(200, 164, 110, 0.08);
+            text-align: center;
+        }
+
+        .footer-links {
+            display: flex;
+            justify-content: center;
+            gap: 2.5rem;
+            margin-bottom: 2.5rem;
+            flex-wrap: wrap;
+        }
+
+        .footer-links a {
+            font-size: 0.82rem;
+            font-weight: 500;
+            color: var(--text-dim);
+            text-decoration: none;
+            letter-spacing: 0.06em;
+            transition: color 0.3s ease;
+            display: flex;
+            align-items: center;
+            gap: 0.4rem;
+        }
+
+        .footer-links a:hover {
+            color: var(--gold);
+        }
+
+        .footer-links a svg {
+            width: 16px;
+            height: 16px;
+            opacity: 0.6;
+        }
+
+        .disclaimer {
+            font-size: 0.72rem;
+            color: var(--text-dim);
+            opacity: 0.6;
+            max-width: 480px;
+            margin: 0 auto;
+            line-height: 1.6;
+        }
+
+        /* --- Animations --- */
+        @keyframes fadeUp {
+            from { opacity: 0; transform: translateY(16px); }
+            to { opacity: 1; transform: translateY(0); }
+        }
+
+        .fade-in {
+            opacity: 0;
+            transform: translateY(20px);
+            transition: opacity 0.6s ease, transform 0.6s ease;
+        }
+
+        .fade-in.visible {
+            opacity: 1;
+            transform: translateY(0);
+        }
+
+        /* --- Responsive --- */
+        @media (max-width: 640px) {
+            .focus-grid {
+                grid-template-columns: 1fr;
+            }
+
+            .project-card {
+                flex-direction: column;
+                gap: 1rem;
+            }
+
+            .hero {
+                padding: 3rem 1.5rem;
+            }
+
+            section {
+                padding: 3.5rem 0;
+            }
+
+            .footer-links {
+                gap: 1.5rem;
+            }
+        }
+    </style>
+</head>
+<body>
+
+    <!-- Hero -->
+    <section class="hero">
+        <div class="hero-label">Matthias Siebels</div>
+        <h1><span class="lex">Lex</span> Siebels</h1>
+        <div class="hero-subtitle">Knowledge Lawyer &mdash; Patent &amp; UPC</div>
+        <div class="hero-rule"></div>
+        <div class="hero-tagline">Hogan Lovells &middot; Düsseldorf</div>
+    </section>
+
+    <!-- Profil -->
+    <section class="section-border fade-in">
+        <div class="container">
+            <div class="section-label">Profil</div>
+            <div class="profil-grid">
+                <div class="profil-text">
+                    <strong>Matthias Siebels</strong> ist Knowledge Lawyer bei <strong>Hogan Lovells</strong> in Düsseldorf.
+                    Er verbindet Patentrecht mit Technologie &mdash; von der systematischen Aufbereitung
+                    komplexer Verfahrensfragen am <strong>Unified Patent Court</strong> bis zum Einsatz von
+                    KI-Werkzeugen in der Kanzleipraxis.
+                </div>
+                <div class="profil-meta">
+                    <div class="profil-meta-item">Kanzlei<span>Hogan Lovells</span></div>
+                    <div class="profil-meta-item">Standort<span>Düsseldorf</span></div>
+                    <div class="profil-meta-item">Fokus<span>Patent &amp; UPC</span></div>
+                    <div class="profil-meta-item">Rolle<span>Knowledge Lawyer</span></div>
+                </div>
+            </div>
+        </div>
+    </section>
+
+    <!-- Schwerpunkte -->
+    <section class="section-border fade-in">
+        <div class="container">
+            <div class="section-label">Schwerpunkte</div>
+            <div class="section-heading">Areas of Focus</div>
+            <div class="focus-grid">
+                <div class="focus-card">
+                    <div class="focus-tag">Litigation</div>
+                    <h3>UPC-Verfahrensrecht</h3>
+                    <p>Verfahrensführung und Prozessstrategie vor dem Einheitlichen Patentgericht. Rechtsprechungsanalyse und Praxisleitfäden.</p>
+                </div>
+                <div class="focus-card">
+                    <div class="focus-tag">IP</div>
+                    <h3>Patentstreitigkeiten</h3>
+                    <p>Patentverletzung und -verteidigung, Schutzbereitsbestimmung, Zwangslizenzverfahren. Nationale und europäische Verfahren.</p>
+                </div>
+                <div class="focus-card">
+                    <div class="focus-tag">Knowledge</div>
+                    <h3>Knowledge Management</h3>
+                    <p>Aufbau und Pflege juristischer Wissenssysteme. Systematische Erfassung von Rechtsprechung, Mustern und Best Practices.</p>
+                </div>
+                <div class="focus-card">
+                    <div class="focus-tag">Tech</div>
+                    <h3>Legal Tech</h3>
+                    <p>KI-gestützte Werkzeuge für die juristische Arbeit. Automatisierung, Recherche-Tools, Datenaufbereitung für Kanzleien.</p>
+                </div>
+            </div>
+        </div>
+    </section>
+
+    <!-- Projekte -->
+    <section class="section-border fade-in">
+        <div class="container">
+            <div class="section-label">Projekte</div>
+            <div class="section-heading">Projects</div>
+            <div class="projects">
+                <div class="project-card">
+                    <div class="project-icon">U</div>
+                    <div class="project-content">
+                        <h3><a href="https://youpc.org" target="_blank" rel="noopener">youpc.org</a></h3>
+                        <p>Open-Source-Forschungsplattform zum Unified Patent Court. Rechtsprechungsdatenbank, Verfahrensanalysen und Statistiken &mdash; frei zugänglich für die IP-Community.</p>
+                        <span class="project-tag">UPC Research Platform</span>
+                    </div>
+                </div>
+                <div class="project-card">
+                    <div class="project-icon">K</div>
+                    <div class="project-content">
+                        <h3>KanzlAI</h3>
+                        <p>KI-Werkzeuge für Kanzleimanagement. Intelligente Dokumentenverarbeitung, Wissensextraktion und Prozessautomatisierung &mdash; speziell für den juristischen Workflow.</p>
+                        <span class="project-tag">AI for Law Firms</span>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </section>
+
+    <!-- Footer -->
+    <footer>
+        <div class="container">
+            <div class="footer-links">
+                <a href="https://www.linkedin.com/in/matthias-siebels/" target="_blank" rel="noopener">
+                    <svg viewBox="0 0 24 24" fill="currentColor"><path d="M20.447 20.452h-3.554v-5.569c0-1.328-.027-3.037-1.852-3.037-1.853 0-2.136 1.445-2.136 2.939v5.667H9.351V9h3.414v1.561h.046c.477-.9 1.637-1.85 3.37-1.85 3.601 0 4.267 2.37 4.267 5.455v6.286zM5.337 7.433a2.062 2.062 0 01-2.063-2.065 2.064 2.064 0 112.063 2.065zm1.782 13.019H3.555V9h3.564v11.452zM22.225 0H1.771C.792 0 0 .774 0 1.729v20.542C0 23.227.792 24 1.771 24h20.451C23.2 24 24 23.227 24 22.271V1.729C24 .774 23.2 0 22.222 0h.003z"/></svg>
+                    LinkedIn
+                </a>
+                <a href="https://youpc.org" target="_blank" rel="noopener">
+                    <svg viewBox="0 0 24 24" fill="currentColor"><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 17.93c-3.95-.49-7-3.85-7-7.93 0-.62.08-1.21.21-1.79L9 15v1c0 1.1.9 2 2 2v1.93zm6.9-2.54c-.26-.81-1-1.39-1.9-1.39h-1v-3c0-.55-.45-1-1-1H8v-2h2c.55 0 1-.45 1-1V7h2c1.1 0 2-.9 2-2v-.41c2.93 1.19 5 4.06 5 7.41 0 2.08-.8 3.97-2.1 5.39z"/></svg>
+                    youpc.org
+                </a>
+                <a href="https://flexsiebels.de" target="_blank" rel="noopener">
+                    <svg viewBox="0 0 24 24" fill="currentColor"><path d="M10 20v-6h4v6h5v-8h3L12 3 2 12h3v8z"/></svg>
+                    flexsiebels.de
+                </a>
+            </div>
+            <div class="disclaimer">
+                Dies ist eine persönliche Seite. Keine Rechtsberatung.
+                &mdash; This is a personal page. No legal advice.
+            </div>
+        </div>
+    </footer>
+
+    <script>
+        // Intersection Observer for fade-in animations
+        const observer = new IntersectionObserver((entries) => {
+            entries.forEach(entry => {
+                if (entry.isIntersecting) {
+                    entry.target.classList.add('visible');
+                    observer.unobserve(entry.target);
+                }
+            });
+        }, { threshold: 0.15 });
+
+        document.querySelectorAll('.fade-in').forEach(el => observer.observe(el));
+    </script>
+
+</body>
+</html>
diff --git a/sites/lexsiebels.de/site.yaml b/sites/lexsiebels.de/site.yaml
new file mode 100644
index 0000000..3c9c4bc
--- /dev/null
+++ b/sites/lexsiebels.de/site.yaml
@@ -0,0 +1,4 @@
+domain: lexsiebels.de
+template: custom
+title: "Lex Siebels — Knowledge Lawyer, Patent & UPC"
+description: "Matthias Siebels — Knowledge Lawyer bei Hogan Lovells. Patentrecht, Unified Patent Court, IP-Strategie, Legal Tech."
