body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.center {
  text-align: center;
  max-width: 48em;
}

.brand {
  display: flex;
  align-items: flex-start;
  gap: 1em;
  text-align: left;
  margin-bottom: 1em;
}

.brand img {
  display: block;
  flex-shrink: 0;
}

.brand-text {
  flex: 1;
  min-width: 0;
}

.brand-text h1 {
  margin-top: 0;
}

.diagram {
  margin-top: 1.5em;
}

.diagram img {
  max-width: 100%;
  height: auto;
}

.footer {
  margin-top: 1.5em;
  font-size: 0.9em;
}

.trademark {
  margin-top: 0.5em;
  font-size: 0.85em;
  opacity: 0.8;
}

.copyright {
  margin-top: 0.5em;
  font-size: 0.85em;
  opacity: 0.8;
}