.ptc-timeline-carousel {
  --ptc-primary: #294c59;
  --ptc-accent: #bc9b5f;
  --ptc-surface: #fff;
  --ptc-border: rgba(41, 76, 89, 0.12);
  --ptc-shadow: 0 18px 40px rgba(41, 76, 89, 0.08);
  font-family: 'Bai Jamjuree', 'Helvetica Neue', Arial, sans-serif;
  color: var(--ptc-primary);
}

.ptc-timeline-carousel,
.ptc-timeline-carousel * {
  box-sizing: border-box;
}

.ptc-timeline-carousel__stage {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
}

.ptc-timeline-carousel__viewport {
  min-width: 0;
  min-height: var(--ptc-card-height, auto);
}

.ptc-timeline-carousel__card {
  display: grid;
  grid-template-columns: minmax(120px, 220px) 1px minmax(0, 1fr);
  align-items: stretch;
  gap: 28px;
  padding: 36px;
  border-radius: 32px;
  background: var(--ptc-surface);
  border: 1px solid var(--ptc-border);
  box-shadow: var(--ptc-shadow);
  min-height: var(--ptc-card-height, auto);
}

.ptc-timeline-carousel__card[hidden] {
  display: none;
}

.ptc-timeline-carousel__year-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
}

.ptc-timeline-carousel__year {
  font-size: clamp(2.2rem, 4vw, 2.75rem);
  line-height: 0.9;
  font-weight: 500;
  text-align: center;
  color: var(--ptc-accent);
}

.ptc-timeline-carousel__divider {
  width: 1px;
  background: rgba(188, 155, 95, 0.35);
}

.ptc-timeline-carousel__content {
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
}

.ptc-timeline-carousel__title {
  margin: 0;
  font-size: clamp(1.5rem, 2vw, 2.3rem);
  line-height: 1.1;
  font-weight: 600;
  color: var(--ptc-primary);
}

.ptc-timeline-carousel__description,
.ptc-timeline-carousel__insight-text {
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(41, 76, 89, 0.88);
}

.ptc-timeline-carousel__description > :last-child,
.ptc-timeline-carousel__insight-text > :last-child {
  margin-bottom: 0;
}

.ptc-timeline-carousel__insight {
  padding-top: 6px;
}

.ptc-timeline-carousel__insight-label {
  margin: 0 0 6px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ptc-primary);
}

.ptc-timeline-carousel__nav {
  width: 52px;
  height: 52px;
  border: 0;
  border-radius: 50%;
  background: var(--ptc-primary);
  color: #fff;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  line-height: 1;
  box-shadow: 0 10px 24px rgba(41, 76, 89, 0.16);
  transition: transform 180ms ease, opacity 180ms ease, background-color 180ms ease;
}

.ptc-timeline-carousel__nav:hover,
.ptc-timeline-carousel__nav:focus-visible {
  transform: translateY(-1px);
  background: #1f3a45;
}

.ptc-timeline-carousel__nav:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
}

.ptc-timeline-carousel__timeline {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 18px;
}

.ptc-timeline-carousel__timeline-item {
  border: 0;
  background: transparent;
  color: var(--ptc-primary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 999px;
  cursor: pointer;
  transition: color 180ms ease, background-color 180ms ease;
  font: inherit;
}

.ptc-timeline-carousel__timeline-item:hover,
.ptc-timeline-carousel__timeline-item:focus-visible {
  background: rgba(41, 76, 89, 0.06);
}

.ptc-timeline-carousel__timeline-item.is-active {
  color: var(--ptc-accent);
}

.ptc-timeline-carousel__timeline-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid currentColor;
  background: transparent;
  flex: 0 0 auto;
}

.ptc-timeline-carousel__timeline-item.is-active .ptc-timeline-carousel__timeline-dot {
  background: currentColor;
}

.ptc-timeline-carousel__timeline-year {
  font-size: 0.95rem;
  font-weight: 600;
}

@media (max-width: 959px) {
  .ptc-timeline-carousel__stage {
    grid-template-columns: 1fr;
  }

  .ptc-timeline-carousel__nav {
    display: none;
  }

  .ptc-timeline-carousel__card {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 24px;
  }

  .ptc-timeline-carousel__divider {
    width: 100%;
    height: 1px;
  }

  .ptc-timeline-carousel__year {
    font-size: clamp(2rem, 12vw, 2.75rem);
  }
}