diff --git a/landing/app/components/sections/how-it-works-demo.tsx b/landing/app/components/sections/how-it-works-demo.tsx
index 64dbbd2..6810537 100644
--- a/landing/app/components/sections/how-it-works-demo.tsx
+++ b/landing/app/components/sections/how-it-works-demo.tsx
@@ -241,6 +241,8 @@ const DEMO_TABS: DemoTab[] = [
     checks: ["1:1 비대면 협상 포털 제공", "불필요한 실랑이를 예방하여 파트너십 보호"],
     mockup: "phone",
     gif: "/gifs/negotiation.gif",
+    video: "/gifs/negotiation.mp4",
+    poster: "/gifs/negotiation.jpg",
     gifAlt: "AI 모바일 자동 협상 시연",
     fallback: {
       icon: Smartphone,