:root{font-family:Inter,system-ui,sans-serif}body{background:#f8fafc;margin:0}.container{max-width:640px;margin:auto;padding:24px}header{text-align:center}h1{margin-top:24px}.subtitle{color:#475569}.actions{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:24px;display:flex}button{cursor:pointer;border:none;border-radius:10px;padding:12px 20px}#subscribeBtn{color:#fff;background:#2563eb}#installBtn{background:#e2e8f0}.notices{margin-top:40px}.notices ul{padding-left:20px}.notices li{margin-bottom:10px}footer{text-align:center;margin-top:50px}footer a{margin:0 10px;text-decoration:none}