.demo-portal{height:100vh;min-height:100vh;overflow:hidden;position:fixed;width:100%;top:0;left:0;background:linear-gradient(135deg,#667eea,#764ba2);background-attachment:fixed}.demo-portal #root{height:100vh;min-height:100vh;position:relative;overflow:hidden}.demo-portal .app-container{height:100vh;min-height:100vh;display:flex;justify-content:center;overflow:hidden;position:relative}.demo-portal .demo-content{color:#fff;margin-top:100px;z-index:1}.demo-portal .demo-content h1{font-size:48px;font-weight:700;margin-bottom:16px}.demo-portal .demo-subtitle{font-size:20px;opacity:.9;margin-bottom:8px}.demo-portal .demo-instruction{font-size:16px;opacity:.8}