.page-header{
  max-width: 900px;
  margin: 0 auto;
  margin-top: 100px;
}

h1{
  text-align: center;
  font-size: 60px;
}

.page-header .page-introduction{
  font-size: 1.8rem;
  line-height: 1.3;
}

/*
 * Related entries grid
 */

.related-entries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
  gap: 24px;
  margin-top: 48px;
  padding: 24px;
  border-top: var(--grid-border);
}

.related-entry-card {
  padding: 0;
  border-bottom: var(--grid-border);
  background: var(--white);
  transition: background-color 0.2s ease;
}

.related-entry-card h3 {
  margin: 0 0 12px;
  font-family: Courier New, Courier, monospace;
  font-size: clamp(18px, 1.5vw, 24px);
  font-weight: inherit;
  line-height: 1.2;
}

.related-entry-card h3 a {
  color: inherit;
  text-decoration: none;
}

.related-entry-card h3 a:hover {
  text-decoration: underline;
}

.related-entry-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.4;
}

/* Undated related entries form a glossary-like accordion. */
.related-entries-accordion {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0 24px;
  padding: 24px;
}

.related-entry-card--collapsible {
  min-width: 0;
  padding: 0;
}

.related-entry-details summary {
  display: flex;
  align-items: baseline;
  justify-content: flex-start;
  gap: 8px;
  padding: 20px 0;
  font-family: Courier New, Courier, monospace;
  font-size: clamp(20px, 2vw, 32px);
  line-height: 1.2;
  cursor: pointer;
  list-style: none;
}

.related-entry-details summary::-webkit-details-marker {
  display: none;
}

.related-entry-details summary:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 4px;
}

.related-entry-count {
  flex: 0 0 auto;
  font-size: 0.7em;
}

.related-entry-details summary::after {
  content: '+';
  margin-left: auto;
}

.related-entry-details[open] summary::after {
  content: '−';
}

.related-entry-preview {
  max-width: 70ch;
  padding: 0 0 28px;
  font-size: 18px;
  line-height: 1.5;
}

.related-entry-preview p {
  margin: 0 0 1em;
  font-size: inherit;
  line-height: inherit;
}

.related-entry-read-more {
  display: inline-block;
  margin-top: 8px;
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}


.calendar .related-entries-grid{
  display: block;
  grid-template-columns: none;
  width: 100%;
  gap: 0;
  padding-top: 0;
}

.calendar .related-entry-card{
  width: 100%;
  border-bottom: var(--grid-border);
  display: flex;
   align-items: stretch;
}

.calendar .related-entry-card .date{
  width: 30%;
  font-size: 48px;
  padding-right: 24px;
  padding-bottom: 24px;
  padding-top: 24px;
  position: relative;
}

.calendar .related-entry-card .date:after{
  content: "";
  /* display: block; */
  width: 1px;
  height: 100%;
  background-color: var(--black);
  position: absolute;
  left: 100%;
  top: 0;
}

.calendar .related-entry-card h3{
  font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
  font-size: 48px;
  padding-left: 24px;
  padding-right: 24px;
  width: 30%;
   padding-bottom: 24px;
  padding-top: 24px;
}

.calendar .related-entry-card p{
  font-size: 24px;
  padding: 24px;
  width: 30%;
  margin-left: 5%;
}

/*
 * Mobile responsive
 */

@media (max-width: 1100px) and (min-width: 801px) {
  .related-entries-accordion {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 800px) {
  .related-entries-accordion {
    grid-template-columns: minmax(0, 1fr);
    padding: 24px var(--panel-padding);
  }

  .related-entries-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 32px;
    padding-top: 32px;
  }
  
  .related-entry-card {
    padding: 16px;
  }

  .related-entries-accordion .related-entry-card--collapsible {
    padding: 0;
  }

  .calendar .related-entries-grid {
    margin-top: 24px;
    padding: 0;
  }

  .calendar .related-entry-card {
    display: block;
    padding: 20px var(--panel-padding);
  }

  .calendar .related-entry-card .date,
  .calendar .related-entry-card h3,
  .calendar .related-entry-card p {
    width: auto;
    margin: 0;
    padding: 0;
  }

  .calendar .related-entry-card .date {
    font-size: 20px;
    line-height: 1.2;
  }

  .calendar .related-entry-card .date::after {
    display: none;
  }

  .calendar .related-entry-card h3 {
    margin-top: 12px;
    font-size: clamp(28px, 9vw, 40px);
    line-height: 1.05;
  }

  .calendar .related-entry-card p {
    margin-top: 16px;
    font-size: 18px;
    line-height: 1.35;
  }
}