body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, system-ui;
  background: #f2f2f7;
  color: #111;
}

.app {
  padding: 24px;
  text-align: center;
}

h1 {
  font-size: 1.8rem;
}

.ios-tip {
  margin-top: 24px;
  background: white;
  padding: 16px;
  border-radius: 12px;
  font-size: 0.95rem;
}

.ios-tip span {
  font-weight: bold;
}