* {
  box-sizing: border-box;
}

html {
  background: #1a4566;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 1rem;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.55;
  color: #17324d;
}

main {
  max-width: 40rem;
  margin: 0 auto;
  padding: 1.25rem 1.25rem 1.5rem;
  border-radius: 12px;
  background: #fff;
}

h1 {
  margin: 0.25rem 0 0;
  font-size: 1.6rem;
  line-height: 1.2;
}

h2 {
  margin: 1.6rem 0 0.4rem;
  font-size: 1.15rem;
  line-height: 1.3;
}

p,
ul {
  margin: 0.5rem 0;
}

ul {
  padding-left: 1.25rem;
}

li + li {
  margin-top: 0.35rem;
}

a {
  color: #0b5cad;
  overflow-wrap: anywhere;
}

a:focus-visible {
  outline: 2px solid #17324d;
  outline-offset: 2px;
}

.updated {
  font-size: 0.9rem;
  color: #4a6075;
}

.back {
  margin: 0;
  font-size: 0.95rem;
}

main > .back:last-child {
  margin-top: 1.75rem;
}

@media (max-width: 30rem) {
  body {
    padding: 0;
  }

  main {
    border-radius: 0;
    min-height: 100vh;
  }
}