*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Arial,Helvetica,sans-serif}body{background:linear-gradient(145deg,#070707,#210000 70%,#050505);color:#fff}.install-shell{min-height:100vh;display:grid;place-items:center;padding:24px}.install-card{width:min(560px,100%);background:#fff;color:#111;border-top:7px solid #c90000;padding:28px;box-shadow:0 24px 70px rgba(0,0,0,.45);text-align:center}.app-icon{width:170px;height:170px;object-fit:cover;border-radius:30px;box-shadow:0 8px 26px rgba(0,0,0,.25)}.eyebrow{margin:18px 0 8px;color:#c90000;font-weight:900;letter-spacing:1.5px;font-size:12px}.install-card h1{font-family:Impact,Haettenschweiler,'Arial Narrow Bold',sans-serif;font-size:48px;margin:0}.intro{line-height:1.5;color:#444;margin:12px auto 22px;max-width:440px}.enter-btn,.install-btn{display:block;width:100%;border:0;background:#c90000;color:#fff;padding:16px 18px;font-weight:900;font-size:17px;letter-spacing:.5px;cursor:pointer}.enter-btn:hover,.install-btn:hover{background:#a90000}.device-tabs{display:grid;grid-template-columns:1fr 1fr;margin-top:26px;border:1px solid #ccc}.tab{border:0;padding:14px;background:#eee;font-weight:900;cursor:pointer}.tab.active{background:#111;color:#fff}.instructions{display:none;text-align:left;border:1px solid #ddd;border-top:0;padding:22px}.instructions.active{display:block}.instructions h2{margin:0 0 14px;color:#c90000;font-size:22px}.instructions ol{margin:0;padding-left:22px}.instructions li{margin:10px 0;line-height:1.35}.install-btn{margin-top:18px}.note{font-size:12px;color:#777;margin:18px 0 0}@media(max-width:520px){.install-shell{padding:0}.install-card{min-height:100vh;padding:24px 18px}.app-icon{width:145px;height:145px}.install-card h1{font-size:42px}}@media (max-width: 600px) {
  .install-shell {
    padding: 0;
    display: block;
  }

  .install-card {
    width: 100%;
    max-width: 100%;
    min-height: 100vh;
    padding: 18px;
    overflow: hidden;
  }

  .app-icon {
    width: 100%;
    height: auto;
    max-width: 100%;
    border-radius: 0;
    display: block;
  }

  .install-card h1 {
    font-size: 38px;
    line-height: 1;
    word-break: normal;
  }

  .eyebrow,
  .intro,
  .instructions,
  .note {
    width: 100%;
  }
}