:root {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #263345;
  background: #f5f6f8;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
main {
  width: min(100%, 850px);
  margin: auto;
  padding: 35px 24px 60px;
}
.back {
  color: #627da5;
  font-size: 13px;
  text-decoration: none;
}
article {
  padding: 36px;
  margin-top: 26px;
  background: white;
  border: 1px solid #e2e7ee;
  border-radius: 16px;
}
.version {
  font-size: 10px;
  letter-spacing: 1px;
  color: #8f9aab;
}
h1 {
  font-size: 30px;
  line-height: 1.25;
  margin: 18px 0 34px;
  letter-spacing: -0.8px;
}
h2 {
  font-size: 17px;
  margin: 26px 0 10px;
}
p {
  font-size: 14px;
  color: #788493;
  line-height: 1.9;
  margin: 0;
}
nav {
  margin-top: 35px;
  padding-top: 20px;
  border-top: 1px solid #e7ebf0;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
nav a {
  font-size: 12px;
  color: #6d83a4;
}
a:focus-visible {
  outline: 3px solid #9bb7e6;
  outline-offset: 3px;
}
@media (max-width: 600px) {
  main {
    padding: 24px 16px;
  }
  article {
    padding: 24px 20px;
  }
  h1 {
    font-size: 26px;
  }
  p {
    font-size: 13px;
  }
}