diff --git a/shared/components/rstack-collab-overlay.ts b/shared/components/rstack-collab-overlay.ts
index b187eb6..6c4bff4 100644
--- a/shared/components/rstack-collab-overlay.ts
+++ b/shared/components/rstack-collab-overlay.ts
@@ -5,7 +5,7 @@
  *   - "N online" badge (top-right pill with colored dots)
  *   - People panel dropdown (click badge to open)
  *   - Online/Offline mode toggle in panel
- *   - Remote cursors (SVG arrows with username labels, viewport-relative)
+ *   - Remote cursors (SVG arrows with username labels, page-relative)
  *   - Focus highlighting (colored outline rings on data-collab-id elements)
  *   - Auto-discovery via rspace-doc-subscribe events from runtime
  *   - Bridge API for canvas (external peer management via CommunitySync)
@@ -395,7 +395,7 @@ export class RStackCollabOverlay extends HTMLElement {
 	// ── Pointer tracking (15Hz throttle) — covers mouse, touch, and pen ──
 
 	#pointerHandler = (e: PointerEvent) => {
-		this.#lastCursor = { x: e.clientX, y: e.clientY };
+		this.#lastCursor = { x: e.clientX + window.scrollX, y: e.clientY + window.scrollY };
 	};
 
 	#startMouseTracking() {
@@ -747,8 +747,10 @@ export class RStackCollabOverlay extends HTMLElement {
 			const age = now - peer.lastSeen;
 			const opacity = age > 5000 ? 0.3 : 1;
 
+			const sx = peer.cursor.x - window.scrollX;
+			const sy = peer.cursor.y - window.scrollY;
 			fragments.push(`
-				<div class="cursor" style="left:${peer.cursor.x}px;top:${peer.cursor.y}px;opacity:${opacity}">
+				<div class="cursor" style="left:${sx}px;top:${sy}px;opacity:${opacity}">
 					<svg width="16" height="20" viewBox="0 0 16 20" fill="none">
 						<path d="M1 1L6.5 18L8.5 11L15 9L1 1Z" fill="${peer.color}" stroke="white" stroke-width="1.5"/>
 					</svg>