diff --git a/B07_DesignDetail/openwebcad/src/inputController/input-controller.ts b/B07_DesignDetail/openwebcad/src/inputController/input-controller.ts
index 55c0592a..4dad90a8 100644
--- a/B07_DesignDetail/openwebcad/src/inputController/input-controller.ts
+++ b/B07_DesignDetail/openwebcad/src/inputController/input-controller.ts
@@ -67,13 +67,25 @@ export class InputController {
 		canvas?.addEventListener('mousedown', (evt: MouseEvent) => this.handleMouseDown(evt));
 		canvas?.addEventListener('mousemove', (evt: MouseEvent) => this.handleMouseMove(evt));
 		canvas?.addEventListener('mouseup', (evt: MouseEvent) => this.handleMouseUp(evt));
-		canvas?.addEventListener('wheel', (evt: WheelEvent) => this.handleMouseWheel(evt));
+		// passive:false — 핀치·휠의 브라우저 기본 확대/스크롤을 막아야 한다.
+		canvas?.addEventListener('wheel', (evt: WheelEvent) => this.handleMouseWheel(evt), {
+			passive: false,
+		});
 		canvas?.addEventListener('mouseout', () => this.handleMouseOut());
 		canvas?.addEventListener('mouseenter', () => this.handleMouseEnter());
 		// Stop the context menu from appearing when right-clicking
 		canvas?.addEventListener('contextmenu', (evt) => {
 			evt.preventDefault();
 		});
+		// 캔버스 밖(리본·패널) 위에서의 트랙패드 핀치도 브라우저를 확대시키지 않는다.
+		// ctrl이 없는 휠은 그대로 둬서 패널 스크롤은 살린다.
+		document.addEventListener(
+			'wheel',
+			(evt: WheelEvent) => {
+				if (evt.ctrlKey) evt.preventDefault();
+			},
+			{ passive: false }
+		);
 	}
 
 	public draw(drawController: ScreenCanvasDrawController) {
@@ -214,6 +226,8 @@ export class InputController {
 	 * @param evt
 	 */
 	public handleMouseWheel(evt: WheelEvent) {
+		// 확대는 도면만 — 트랙패드 핀치(ctrl+휠)가 브라우저 전체를 키우던 것을 막는다.
+		evt.preventDefault();
 		if (Math.abs(evt.deltaY) === 0) {
 			return; // We can't zoom by zero delta
 		}