scroll to top button for mobile

public/s/css/f0ckm.css

@@ -2192,7 +2192,7 @@ body.sidebar-right-hidden .global-sidebar-right {
   }
 }
 
-/* Common sizing for the Legacy content area */
+
 .item-layout-container .item-main-content>._204863,
 .item-layout-container .item-main-content>.item_title,
 .item-layout-container .item-main-content>.content,
@@ -9132,6 +9132,15 @@ html[theme="f0ck95d"] .badge-dark {
   color: var(--accent);
 }
 
+.mobile-scroll-to-top {
+  background: none;
+  border: none;
+  color: var(--white);
+  position: absolute;
+  bottom: 20px;
+  cursor: pointer;
+}
+
 .steuerung.steuerung-icon .fa-solid {
   font-size: 0.85em;
 }

public/s/js/f0ckm.js

@@ -9183,6 +9183,16 @@ document.addEventListener('click', (e) => {
   window.scrollTo({ top: document.body.scrollHeight, behavior: 'smooth' });
 });
 
+// ── Mobile scroll-to-top button ───────────────────────────────────────────────
+// Visible only on mobile (≤999px), appears below #comments-container so users
+// can easily get back to the top after reading comments.
+document.addEventListener('click', (e) => {
+  if (!e.target.closest('.mobile-scroll-to-top')) return;
+  e.preventDefault();
+  window.scrollTo({ top: 0, behavior: 'smooth' });
+  if (navigator.vibrate) navigator.vibrate(20);
+});
+
 // ── Spoiler Tags Event Delegation ─────────────────────────────────────────────
 (function() {
     const isHidden = (el) => el && el.classList && (el.classList.contains('spoiler') || el.classList.contains('blur-text'));