body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  max-width: 46rem;
  margin: 2rem auto;
  padding: 0 1.25rem;
  line-height: 1.6;
  color: #1a1a1a;
}

h1, h2, h3 {
  line-height: 1.25;
}

.acronym {
  font-size: 1rem;
  color: #444;
  margin: 0.25rem 0 0;
}

.tagline {
  font-size: 1.125rem;
  margin-top: 0.5rem;
}

.contact {
  margin-bottom: 2rem;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0;
  font-size: 0.95rem;
}

th, td {
  border: 1px solid #ccc;
  padding: 0.5rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

video {
  display: block;
  max-width: 100%;
  margin: 1rem 0;
  border-radius: 4px;
}

.diagram {
  margin: 1.25rem 0;
}

.diagram img,
.diagram svg {
  display: block;
  max-width: 100%;
  height: auto;
}

.diagram figcaption {
  font-size: 0.9rem;
  color: #444;
  margin-top: 0.5rem;
}

.video-block {
  margin: 1.25rem 0;
}

.video-block video {
  margin-bottom: 0.5rem;
}

.video-block figcaption {
  font-size: 0.9rem;
  color: #444;
}

.video-block figcaption strong {
  color: #1a1a1a;
}

a {
  color: #0969da;
}

.note {
  font-size: 0.875rem;
  color: #555;
  margin: 0.75rem 0 0;
}

.note a {
  color: #555;
  text-decoration: underline;
}

h2 {
  margin-top: 2rem;
  padding-top: 0.5rem;
  border-top: 1px solid #e8e8e8;
}

h2:first-of-type {
  border-top: none;
  margin-top: 1.5rem;
}