.product-diagram {
  max-width: 1100px;
  margin: 80px auto;
  display: flex;
  flex-direction: column;
  gap: 60px;
  padding: 0 20px;
}

.diagram-box {
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
  padding: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.diagram-box:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

.diagram-box img {
  max-width: 100%;
  height: auto;
  object-fit: contain;
}