body {
  font-family: Georgia, serif;
  max-width: 46rem;
  margin: 2rem auto;
  padding: 0 1rem;
  line-height: 1.5;
}
h2 {
  border-bottom: 1px solid #ccc;
  padding-bottom: 0.25rem;
  margin-top: 2.5rem;
}
article { margin: 1.5rem 0; }
.summary {
  white-space: pre-wrap;
  background: #f7f7f4;
  padding: 1rem;
  border-radius: 6px;
}
footer { margin-top: 3rem; color: #666; font-size: 0.85rem; }

/* Present for screen readers, absent visually. */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.subscribe {
  background: #f2f5f7;
  border: 1px solid #d7dee3;
  border-radius: 8px;
  padding: 1.25rem;
  margin: 2rem 0;
}
.subscribe h2 { border: none; margin-top: 0; font-size: 1.1rem; }
.subscribe form { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.subscribe input[type="email"] {
  font: inherit;
  padding: 0.5rem;
  border: 1px solid #999;
  border-radius: 5px;
  flex: 1 1 18rem;
}
.subscribe button {
  font: inherit;
  padding: 0.5rem 1.1rem;
  border: 1px solid #444;
  border-radius: 5px;
  background: #fff;
  cursor: pointer;
}
.subscribe button[disabled] { opacity: 0.6; cursor: default; }
.subscribe .note { color: #566; font-size: 0.85rem; margin: 0.5rem 0 0; }
.subscribe .status { margin: 0.75rem 0 0; font-size: 0.9rem; }
.subscribe .status.error { color: #a12; }