.timeline-index {
  list-style: none;
  padding-left: 0;
  margin-top: 2rem;
}

.timeline-index li {
  margin-bottom: 0.75rem;
}

.timeline-index a {
  font-size: 1.1rem;
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid #e5e7eb;
  padding-bottom: 0.25rem;
  display: inline-block;
}

.timeline-index a:hover {
  border-bottom-color: #9ca3af;
}


.timeline-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid #e5e7eb;
  font-size: 0.9rem;
}

.timeline-nav a {
  text-decoration: none;
  color: #374151;
  border-bottom: 1px solid transparent;
}

.timeline-nav a:hover {
  border-bottom-color: #9ca3af;
}

.timeline-nav .all {
  font-weight: 500;
}


.timeline {
  position: relative;
  padding-left: 2.5rem;
  margin-top: 1.875rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0.875rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #e5e5e5;
}

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -1.95rem;
  top: 0.375rem;
  width: 0.75rem;
  height: 0.75rem;
  background: #999;
  border-radius: 50%;
}

.timeline-date {
  font-size: 0.8rem;
  color: #666;
  margin-bottom: 0.375rem;
}

.timeline-content h3 {
  margin: 0 0 0.375rem 0;
  font-size: 1rem;
}

.timeline-content p {
  margin: 0;
  line-height: 1.6;
}