.seat-anatomy-section {
  position: relative;
  background: #FFFFFF;
  border-top: 1px solid #E2E8F0;
  font-family: var(--font-family, 'Plus Jakarta Sans', sans-serif);
}

.anatomy-scroll-track {
  position: relative;
  height: 260vh;
}

.anatomy-sticky-box {
  position: sticky;
  top: 80px;
  height: calc(100vh - 80px);
  height: calc(100dvh - 80px);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #FFFFFF;
}

.anatomy-inner-container {
  width: 100%;
  height: 100%;
  max-width: 1400px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  padding-top: 10px;
  padding-bottom: 10px;
  box-sizing: border-box;
}

.anatomy-header {
  text-align: center;
  margin-bottom: 0;
}

.anatomy-tagline {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: #DF0513;
  margin-bottom: 4px;
}

.anatomy-title {
  font-size: 34px;
  font-weight: 800;
  color: #0F172A;
  margin: 0;
  line-height: 1.2;
  letter-spacing: -0.8px;
}

.anatomy-stage-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr 1fr;
  gap: 36px;
  align-items: center;
  flex: 1;
  min-height: 0;
}

.anatomy-cards-col {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.anatomy-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
  padding: 20px 22px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  opacity: 0.45;
  transform: translateY(4px);
}

.anatomy-card.active {
  opacity: 1;
  border-color: #DF0513;
  transform: translateY(0);
  box-shadow: 0 10px 28px rgba(223, 5, 19, 0.12);
}

.anatomy-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.anatomy-step-pill {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: 4px;
  background: #0B0F19;
  color: #FFFFFF;
  line-height: 1;
}

.anatomy-card.active .anatomy-step-pill {
  background: #DF0513;
}

.anatomy-card-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: #F8FAFC;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
}

.anatomy-card-icon svg {
  width: 20px;
  height: 20px;
  color: #000000;
  transition: color 0.25s ease;
}

.anatomy-card.active .anatomy-card-icon {
  background: #FEF2F2;
}

.anatomy-card.active .anatomy-card-icon svg,
.anatomy-card:hover .anatomy-card-icon svg {
  color: #DF0513;
}

.anatomy-card-title {
  font-size: 16px;
  font-weight: 700;
  color: #0F172A;
  margin: 0 0 6px;
  line-height: 1.3;
}

.anatomy-card-desc {
  font-size: 13px;
  color: #64748B;
  margin: 0 0 10px;
  line-height: 1.5;
}

.anatomy-card-feature {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 700;
  color: #DF0513;
  background: #FEF2F2;
  padding: 4px 10px;
  border-radius: 4px;
}

.anatomy-center-stage {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.anatomy-media-frame {
  position: relative;
  width: 100%;
  max-width: 560px;
  aspect-ratio: 9 / 16;
  max-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
}

.anatomy-video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  pointer-events: none;
  background: transparent;
  display: block;
}

.anatomy-scroll-hint {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
  font-size: 12px;
  font-weight: 700;
  color: #64748B;
  transition: opacity 0.3s ease;
}

.hint-mouse {
  width: 14px;
  height: 22px;
  border: 1.5px solid #64748B;
  border-radius: 10px;
  position: relative;
  display: flex;
  justify-content: center;
}

.hint-wheel {
  width: 2px;
  height: 5px;
  background: #DF0513;
  border-radius: 2px;
  margin-top: 3px;
  animation: mouseWheelMove 1.5s infinite;
}

@keyframes mouseWheelMove {
  0% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(6px);
  }
}

@media (max-width: 1024px) {
  .anatomy-scroll-track {
    height: 240vh;
  }

  .anatomy-stage-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .anatomy-cards-col {
    display: none;
  }

  .anatomy-media-frame {
    max-width: 440px;
    max-height: 70vh;
  }
}

@media (max-width: 640px) {
  .anatomy-title {
    font-size: 26px;
  }

  .anatomy-media-frame {
    max-width: 340px;
    max-height: 62vh;
  }
}