SEO/GEO: Keyword-Tagline in h1, Title keyword-first, Meta-Description mit CTA, Facebook in club.json + Aktuelles-Subline

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

public/assets/css/components.css

@@ -54,6 +54,14 @@
     text-shadow: 0 2px 24px rgb(0 0 0 / 0.5);
 }
 
+/* Keyword-Subline innerhalb der h1 (SEO) — visuell kleinere zweite Zeile */
+.hero__tagline {
+    display: block;
+    margin-top: 0.75rem;
+    font-size: var(--fs-600);
+    letter-spacing: 0.14em;
+}
+
 .hero__text {
     margin-top: 1rem;
     max-width: 60ch;