body {
  margin: 0;
  background: #e8f3fc;
  color: #1a2b3c;
  font-family: system-ui, "PingFang SC", "Hiragino Sans GB", sans-serif;
  line-height: 1.8;
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 24px;
}

h1 {
  margin: 0 0 24px;
  font-size: 32px;
  font-weight: 600;
}

p {
  margin: 0 0 12px;
}

a {
  color: #1565c0;
}