diff --git a/resources/views/rd/planning-design/index.blade.php b/resources/views/rd/planning-design/index.blade.php
index e131dace..1ddd9120 100644
--- a/resources/views/rd/planning-design/index.blade.php
+++ b/resources/views/rd/planning-design/index.blade.php
@@ -1407,39 +1407,9 @@ function planningCanvas() {
             // 현재 내용 클리어
             svg.innerHTML = '';
 
-            // defs (arrowhead marker)
             const NS = 'http://www.w3.org/2000/svg';
-            const defs = document.createElementNS(NS, 'defs');
 
-            const marker = document.createElementNS(NS, 'marker');
-            marker.setAttribute('id', 'arrowhead');
-            marker.setAttribute('markerWidth', '10');
-            marker.setAttribute('markerHeight', '7');
-            marker.setAttribute('refX', '9');
-            marker.setAttribute('refY', '3.5');
-            marker.setAttribute('orient', 'auto');
-            const poly = document.createElementNS(NS, 'polygon');
-            poly.setAttribute('points', '0 0, 10 3.5, 0 7');
-            poly.setAttribute('fill', '#94a3b8');
-            marker.appendChild(poly);
-
-            const markerSel = document.createElementNS(NS, 'marker');
-            markerSel.setAttribute('id', 'arrowhead-sel');
-            markerSel.setAttribute('markerWidth', '10');
-            markerSel.setAttribute('markerHeight', '7');
-            markerSel.setAttribute('refX', '9');
-            markerSel.setAttribute('refY', '3.5');
-            markerSel.setAttribute('orient', 'auto');
-            const polySel = document.createElementNS(NS, 'polygon');
-            polySel.setAttribute('points', '0 0, 10 3.5, 0 7');
-            polySel.setAttribute('fill', '#6366f1');
-            markerSel.appendChild(polySel);
-
-            defs.appendChild(marker);
-            defs.appendChild(markerSel);
-            svg.appendChild(defs);
-
-            // 기존 연결선
+            // 기존 연결선 (화살표 없이 단순 곡선)
             const self = this;
             this.connections.forEach(conn => {
                 const d = this.getConnectionPath(conn);
@@ -1450,7 +1420,7 @@ function planningCanvas() {
                 path.setAttribute('stroke', isSel ? '#6366f1' : '#94a3b8');
                 path.setAttribute('stroke-width', isSel ? '3' : '2');
                 path.setAttribute('fill', 'none');
-                path.setAttribute('marker-end', isSel ? 'url(#arrowhead-sel)' : 'url(#arrowhead)');
+                path.setAttribute('stroke-linecap', 'round');
                 path.style.pointerEvents = 'stroke';
                 path.style.cursor = 'pointer';
                 path.addEventListener('click', () => { self.selectConnection(conn); });
@@ -1465,7 +1435,7 @@ function planningCanvas() {
                 temp.setAttribute('stroke-width', '2');
                 temp.setAttribute('stroke-dasharray', '6 3');
                 temp.setAttribute('fill', 'none');
-                temp.setAttribute('marker-end', 'url(#arrowhead-sel)');
+                temp.setAttribute('stroke-linecap', 'round');
                 temp.style.pointerEvents = 'none';
                 svg.appendChild(temp);
             }