.hero{padding:80px 0;background:linear-gradient(135deg,#eef5ff,#fff)}.hero h1{font-size:42px;font-weight:800}.demo-card{height:300px;border-radius:24px;background:#0d6efd;color:white;display:flex;align-items:center;justify-content:center;text-align:center;font-size:28px;font-weight:700;box-shadow:0 20px 50px #0002}.card{border:0;box-shadow:0 8px 24px #0001;border-radius:18px}