body,html{margin:0;padding:0;min-height:100%;background:linear-gradient(135deg,#f2fbf7,#dff7eb);font-family:Avenir,Helvetica,Arial,sans-serif}#app{min-height:100vh;display:flex;align-items:center;justify-content:center;color:#2c3e50}.pwa-shell{width:min(90vw,480px)}.card{background:hsla(0,0%,100%,.85);border-radius:18px;box-shadow:0 18px 45px rgba(66,185,131,.16);padding:32px 28px;text-align:center}.badge{display:inline-block;padding:6px 12px;border-radius:999px;background:#42b983;color:#fff;font-size:.75rem;letter-spacing:.08em;font-weight:700;text-transform:uppercase}h1{margin:18px 0 10px;font-size:clamp(2rem,4vw,3rem)}p{margin:0;line-height:1.6;font-size:1rem}.install-button{margin-top:24px;border:0;border-radius:999px;padding:12px 22px;background:#42b983;color:#fff;cursor:pointer;font:inherit;font-weight:700}.install-button:hover{background:#369f70}