diff --git a/frontend/src/flow/SystemFlowViewer.css b/frontend/src/flow/SystemFlowViewer.css
index ab13810..30bce23 100644
--- a/frontend/src/flow/SystemFlowViewer.css
+++ b/frontend/src/flow/SystemFlowViewer.css
@@ -183,6 +183,48 @@ body,
   background: #0b1220;
 }
 
+.sf-focus-badge {
+  position: absolute;
+  top: 16px;
+  left: 50%;
+  transform: translateX(-50%);
+  z-index: 100;
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 8px 14px;
+  background: rgba(15, 23, 42, 0.95);
+  border: 1px solid rgba(56, 189, 248, 0.45);
+  border-radius: 8px;
+  box-shadow: 0 10px 32px rgba(2, 6, 23, 0.5);
+  font-size: 12px;
+  color: #e2e8f0;
+  -webkit-backdrop-filter: blur(8px);
+  backdrop-filter: blur(8px);
+}
+
+.sf-focus-badge strong {
+  color: #7dd3fc;
+  font-weight: 600;
+}
+
+.sf-focus-badge button {
+  background: transparent;
+  border: 1px solid rgba(148, 163, 184, 0.3);
+  color: #94a3b8;
+  padding: 4px 10px;
+  border-radius: 4px;
+  font-size: 11px;
+  cursor: pointer;
+  transition: all 0.15s;
+}
+
+.sf-focus-badge button:hover {
+  background: rgba(56, 189, 248, 0.1);
+  border-color: rgba(56, 189, 248, 0.5);
+  color: #7dd3fc;
+}
+
 .sf-canvas .react-flow__renderer {
   background: #0b1220;
 }
@@ -265,7 +307,15 @@ body,
 }
 
 .sf-node-body[data-selected='true'] {
-  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.35), 0 12px 32px rgba(2, 6, 23, 0.4);
+  box-shadow:
+    0 0 0 4px rgba(56, 189, 248, 0.35),
+    0 0 32px rgba(56, 189, 248, 0.25),
+    0 12px 32px rgba(2, 6, 23, 0.4);
+  transform: scale(1.02);
+}
+
+.sf-node-body[data-dimmed='true'] {
+  filter: grayscale(0.8);
 }
 
 .sf-node-stage {
diff --git a/frontend/src/flow/SystemFlowViewer.tsx b/frontend/src/flow/SystemFlowViewer.tsx
index 9f6eb0d..b0bb194 100644
--- a/frontend/src/flow/SystemFlowViewer.tsx
+++ b/frontend/src/flow/SystemFlowViewer.tsx
@@ -44,8 +44,8 @@ function matchesSearch(node: FlowNode, query: string): boolean {
 
 // ─── 레이아웃 계산 (stage/menu 그리드) ──────────────────
 
-const COL_WIDTH = 360;
-const ROW_HEIGHT = 130;
+const COL_WIDTH = 440;
+const ROW_HEIGHT = 170;
 const COL_PADDING_X = 80;
 const COL_PADDING_Y = 80;
 
@@ -60,6 +60,7 @@ function buildLayout(
   groupBy: 'stage' | 'menu',
   selectedNodeId: string | null,
   selectedEdgeId: string | null,
+  focusedNodeIds: Set<string> | null,
 ): LayoutResult {
   // 1. 그룹 키별로 노드 분류 (stage 모드는 정해진 순서, menu 모드는 정렬)
   const STAGE_ORDER = [
@@ -99,6 +100,7 @@ function buildLayout(
       const y = COL_PADDING_Y + rowIdx * ROW_HEIGHT;
       const accent = stageColor(node.stage);
       const isSelected = selectedNodeId === node.id;
+      const isDimmed = focusedNodeIds !== null && !focusedNodeIds.has(node.id);
 
       positionedNodes.push({
         id: node.id,
@@ -110,11 +112,11 @@ function buildLayout(
           background: 'transparent',
           border: 'none',
           width: 240,
+          opacity: isDimmed ? 0.18 : 1,
+          transition: 'opacity 0.2s',
+          pointerEvents: isDimmed ? 'none' : 'auto',
         },
-        // 커스텀 노드를 사용하지 않고 기본 노드의 라벨을 React 요소로 전달
-        // (별도 nodeTypes 등록 없이 동작하도록 className으로 처리)
       } as Node);
-      // 노드 라벨에 직접 JSX를 넣을 수 없으므로 className으로 처리하고 CSS로 dataset 사용
       const last = positionedNodes[positionedNodes.length - 1];
       last.data = {
         label: (
@@ -123,6 +125,7 @@ function buildLayout(
             data-status={node.status}
             data-trigger={node.trigger}
             data-selected={isSelected}
+            data-dimmed={isDimmed}
             style={{ ['--accent' as never]: accent }}
           >
             <div className="sf-node-stage">{node.stage} · {node.kind}</div>
@@ -135,7 +138,8 @@ function buildLayout(
     });
   });
 
-  // 3. 엣지 변환
+  // 3. 엣지 변환 — source별 offset으로 겹침 완화
+  const sourceCounter: Record<string, number> = {};
   const positionedEdges: Edge[] = flowEdges.map((edge) => {
     const isSelected = selectedEdgeId === edge.id;
     const color =
@@ -144,26 +148,49 @@ function buildLayout(
         : edge.kind === 'trigger'
           ? '#86efac'
           : '#94a3b8';
+
+    // 같은 source에서 나가는 N번째 엣지에 offset 증가 → 경로 분산
+    const idxFromSource = sourceCounter[edge.source] ?? 0;
+    sourceCounter[edge.source] = idxFromSource + 1;
+    // 20~80px 사이에서 분산 (노드 너비 240 기준)
+    const pathOffset = 20 + idxFromSource * 14;
+
+    // 포커스 모드: 선택 노드와 연결된 엣지만 불투명
+    const isFocused =
+      focusedNodeIds === null ||
+      (focusedNodeIds.has(edge.source) && focusedNodeIds.has(edge.target));
+    const isHighlighted =
+      isSelected ||
+      (selectedNodeId !== null &&
+        (edge.source === selectedNodeId || edge.target === selectedNodeId));
+
+    const strokeColor = isHighlighted ? '#f8fafc' : color;
+    const opacity = isFocused ? 1 : 0.08;
+
     return {
       id: edge.id,
       source: edge.source,
       target: edge.target,
       label: edge.label,
       type: 'smoothstep',
-      animated: isSelected || edge.kind === 'feedback',
+      pathOptions: { offset: pathOffset, borderRadius: 14 },
+      animated: isHighlighted || (isFocused && edge.kind === 'feedback'),
       markerEnd: {
         type: MarkerType.ArrowClosed,
-        color: isSelected ? '#f8fafc' : color,
+        color: strokeColor,
         width: 18,
         height: 18,
       },
       style: {
-        stroke: isSelected ? '#f8fafc' : color,
-        strokeWidth: isSelected ? 2.6 : 1.6,
+        stroke: strokeColor,
+        strokeWidth: isHighlighted ? 2.8 : 1.6,
         strokeDasharray: edge.kind === 'feedback' ? '6 4' : undefined,
+        opacity,
+        transition: 'opacity 0.2s, stroke 0.2s, stroke-width 0.2s',
       },
-      labelStyle: { fill: '#cbd5e1', fontSize: 10 },
-      labelBgStyle: { fill: '#0f172a', fillOpacity: 0.9 },
+      labelStyle: { fill: isFocused ? '#cbd5e1' : '#475569', fontSize: 10 },
+      labelBgStyle: { fill: '#0f172a', fillOpacity: isFocused ? 0.9 : 0.3 },
+      zIndex: isHighlighted ? 1000 : isFocused ? 10 : 0,
     };
   });
 
@@ -230,10 +257,30 @@ export function SystemFlowViewer() {
     );
   }, [filteredNodeIds]);
 
+  // 포커스 모드: 선택된 노드가 있으면 1-hop 연결 노드 집합 계산
+  // 선택이 없거나 엣지가 선택되면 null (전체 활성)
+  const focusedNodeIds = useMemo<Set<string> | null>(() => {
+    if (!selectedNodeId) return null;
+    const connected = new Set<string>([selectedNodeId]);
+    filteredEdges.forEach((e) => {
+      if (e.source === selectedNodeId) connected.add(e.target);
+      if (e.target === selectedNodeId) connected.add(e.source);
+    });
+    return connected;
+  }, [selectedNodeId, filteredEdges]);
+
   // React Flow 노드/엣지
   const { nodes: rfNodes, edges: rfEdges } = useMemo(
-    () => buildLayout(filteredNodes, filteredEdges, groupBy, selectedNodeId, selectedEdgeId),
-    [filteredNodes, filteredEdges, groupBy, selectedNodeId, selectedEdgeId],
+    () =>
+      buildLayout(
+        filteredNodes,
+        filteredEdges,
+        groupBy,
+        selectedNodeId,
+        selectedEdgeId,
+        focusedNodeIds,
+      ),
+    [filteredNodes, filteredEdges, groupBy, selectedNodeId, selectedEdgeId, focusedNodeIds],
   );
 
   const selectedNode = useMemo(
@@ -255,6 +302,11 @@ export function SystemFlowViewer() {
     setSelectedNodeId(null);
   }, []);
 
+  const onPaneClick = useCallback(() => {
+    setSelectedNodeId(null);
+    setSelectedEdgeId(null);
+  }, []);
+
   const handleSelectNode = useCallback((id: string) => {
     setSelectedNodeId(id);
     setSelectedEdgeId(null);
@@ -276,11 +328,20 @@ export function SystemFlowViewer() {
         onSelectNode={handleSelectNode}
       />
       <div className="sf-canvas">
+        {focusedNodeIds && selectedNode && (
+          <div className="sf-focus-badge">
+            <span>
+              <strong>{selectedNode.label}</strong> 연결 노드 {focusedNodeIds.size - 1}개만 표시 중
+            </span>
+            <button type="button" onClick={onPaneClick}>전체 보기 ✕</button>
+          </div>
+        )}
         <ReactFlow
           nodes={rfNodes}
           edges={rfEdges}
           onNodeClick={onNodeClick}
           onEdgeClick={onEdgeClick}
+          onPaneClick={onPaneClick}
           fitView
           fitViewOptions={{ padding: 0.2 }}
           minZoom={0.1}