feat(alternatives): add Teleparty & Screen Sharing comparison pages with i18n

- Add article-style comparison pages for Teleparty and Screen Sharing
- Replace comparison tables with honest prose sections
- Add 15-language hreflang alternates and sitemap entries
- Add English locale fallback for untranslated languages
- Replace placeholder Draft copy with real English and German text
- Remove old Draft locale keys from all 13 non-EN/DE locales
- Rebuild outputs with zero TODO/Draft/noindex issues

website/style.css

@@ -1828,6 +1828,17 @@ footer {
     color: var(--text-muted);
 }
 
+footer a {
+    color: var(--text-muted);
+    text-decoration: none;
+    transition: color 0.2s ease;
+}
+
+footer a:hover {
+    color: var(--text);
+}
+
+
 /* --- Animations --- */
 [data-reveal] {
     opacity: 0;
@@ -2564,12 +2575,9 @@ html:not(.lang-de) [lang="de"] {
         opacity: 0.85;
     }
 
-    .comparison-table td.check::before {
-        content: "KoalaSync";
-    }
-
+    .comparison-table td.check::before,
     .comparison-table td.cross::before {
-        content: "Teleparty";
+        content: attr(data-label);
     }
 
     /* Keep the KoalaSync row subtly highlighted, like on desktop. */
@@ -2930,7 +2938,29 @@ header[id] {
     .status-ring.active-pulse,
     .hero-mockup-wrapper,
     .cta-group .btn {
-        will-change: auto;
+    }
+}
+
+/* --- Alternatives Hub Styles --- */
+.guide-card {
+    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.25s ease, border-color 0.25s ease !important;
+}
+.guide-card:hover {
+    transform: translateY(-4px);
+    background-color: rgba(255, 255, 255, 0.07) !important;
+    border-color: rgba(255, 255, 255, 0.22) !important;
+    box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.4);
+}
+.guide-card .btn-primary {
+    transition: background-color 0.2s ease, transform 0.1s ease;
+}
+.guide-card .btn-primary:active {
+    transform: scale(0.97);
+}
+@media (max-width: 640px) {
+    .guides-grid {
+        grid-template-columns: 1fr !important;
+        gap: 1.25rem !important;
     }
 }