/* Feature 16B - Timeline */
.timeline-section {
  background: #F8F8F8;
  overflow: hidden;
}
.timeline-h-header .tagline {
  background: #1360A0;
  color: #fff;
  padding: 6px 16px;
  border-radius: 999px;
}
.timeline-h-nav { gap: 12px; }
.timeline-h-nav button {
  width: 52px;
  height: 52px;
  padding: 0;
  border-radius: 50%;
  border: 1.5px solid #0B1B2B;
  background: #fff;
  color: #0B1B2B;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity .2s;
}
.timeline-h-nav button.timeline-h-next {
  background: #1360A0;
  border-color: #1360A0;
  color: #fff;
}
.timeline-h-nav button:disabled {
  opacity: .35;
  cursor: default;
}
.timeline-h-track {
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 0 6px 8px;
  margin-inline: -6px;
  scroll-padding-inline: 6px;
  scrollbar-width: none;
}
.timeline-h-track::-webkit-scrollbar { display: none; }
.timeline-h-item {
  flex: 0 0 280px;
  scroll-snap-align: start;
  gap: 20px;
}
.timeline-h-line { height: 25px; }
.timeline-h-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #1360A0;
  box-shadow: 0 0 0 5px rgba(19, 96, 160, .14);
  flex-shrink: 0;
}
.timeline-h-bar {
  flex-grow: 1;
  height: 2px;
  background: #D6E0EA;
  margin-right: -24px;
}
.timeline-h-item:last-child .timeline-h-bar { display: none; }
.timeline-h-year {
  font-size: 36px;
  font-weight: 700;
  line-height: 1;
  color: #1360A0;
}
.timeline-h-card {
  gap: 14px;
  padding: 24px;
  background: #fff;
  border: 1px solid #E3EAF2;
  border-radius: 20px;
  min-height: 250px;
  flex-grow: 1;
}
.timeline-h-img {
  display: block;
  width: 100%;
  border-radius: 12px;
  height: 140px;
  object-fit: cover;
  object-position: center;
}
.timeline-h-card h3,
.timeline-h-card h4,
.timeline-h-card h5 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.3;
  color: #0B1B2B;
}
.timeline-h-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: #4A5868;
}
.timeline-h-progress {
  height: 4px;
  border-radius: 4px;
  background: #E3EAF2;
  margin-top: 40px;
}
.timeline-h-progress span {
  display: block;
  height: 4px;
  border-radius: 4px;
  background: #1360A0;
  width: 50%;
  transition: width .3s;
}
@media (max-width: 700px) {
  .timeline-h-header h2 { font-size: 36px; }
  .timeline-h-item { flex-basis: 78%; }
}