:root {
  --primary: #52ACEE;
  --primary-dark: #2f8fd6;
  --text: #222;
  --muted: #666;
  --bg: #fff;
  --border: #eee;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

header.site {
  background: var(--primary);
  color: #fff;
  padding: 18px 24px;
}

header.site .inner {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

header.site h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
}

header.site h1 a {
  color: #fff;
  text-decoration: none;
}

header.site nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}

header.site nav a {
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  opacity: .9;
}

header.site nav a:hover,
header.site nav a:focus {
  opacity: 1;
  text-decoration: underline;
  outline: none;
}

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 28px 22px 60px;
}

h2 {
  color: var(--primary);
  margin-top: 1.6em;
  font-size: 20px;
}

p,
li {
  margin: 0.6em 0;
}

code,
pre {
  background: #f4f6f8;
  border-radius: 6px;
  padding: 2px 6px;
  font-size: 90%;
  font-family: "SF Mono", Menlo, Consolas, monospace;
}

pre {
  padding: 12px;
  overflow: auto;
}

a {
  color: var(--primary-dark);
}

a:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

footer.site {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  padding: 18px;
  border-top: 1px solid var(--border);
}

@media (max-width: 480px) {
  header.site {
    padding: 14px 16px;
  }

  main {
    padding: 20px 16px 40px;
  }

  header.site h1 {
    font-size: 20px;
  }
}