.contentchitiet {
    display: flex;
    flex-wrap: wrap;
    padding-top: 250px;
    max-width: 1500px;
    margin: 0 auto;
  }
  .image-section {
    flex: 1 1 50%;
    padding: 1rem;
  }
  .image-section img {
    width: 100%;
    height: auto;
    border-radius: 10px;
  }
  
  .details {
    text-transform: none;
    padding: 2rem;
    max-width: 1500px;
    margin: 0 auto;
  }
  .related-products {
    padding: 2rem;
    background: #f9f9f9;
  }
  .related-products h2 {
    margin-bottom: 1rem;
  }
  .image-section {
    flex: 1 1 50%;
    padding: 1rem;
  }
  .image-section img {
    width: 100%;
    height: auto;
    border-radius: 10px;
  }
  .info-section {
    flex: 1 1 50%;
    padding: 1rem;
  }
  .info-section h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
  }
  .info-section .price {
    font-size: 1.5rem;
    color: #C8511B;
    margin-bottom: 1rem;
  }
  .info-section .short-desc {
    margin-bottom: 1.5rem;
  }
  .info-section button {
    background: #C8511B;
    color: #fff;
    border: none;
    padding: 1rem 2rem;
    font-size: 1rem;
    border-radius: 5px;
    cursor: pointer;
  }
  .details {
    padding: 2rem;
    max-width: 1500px;
    margin: 0 auto;
  }
  .related-products {
    padding: 2rem;
    background: #f9f9f9;
  }
  .related-products h2 {
    margin-bottom: 1rem;
  }
  .price {
    font-size: 24px;
    font-weight: bold;
    margin: 20px 0;
    color: #c45c00;
  }
  .option-group {
    margin: 20px 0;
  }
  .option-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
  }
  .option-group .options {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
  }
  .options input[type="radio"],
  .options input[type="checkbox"] {
    display: none;
  }
  .options label {
    padding: 10px 15px;
    border: 1px solid #ccc;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.2s;
  }
  .options input[type="radio"]:checked + label,
  .options input[type="checkbox"]:checked + label {
    background-color: #c45c00;
    color: white;
    border-color: #c45c00;
  }
  .add-to-cart {
    background-color: #c45c00;
    color: white;
    border: none;
    padding: 15px 25px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    margin-top: 20px;
  }
@media (max-width: 768px) {
  .contentchitiet {
    flex-direction: column;
    padding-top: 150px;
  }

  .image-section,
  .info-section {
    flex: 1 1 100%;
  }
}
@media (max-width: 768px) {
  .contentchitiet {
    flex-direction: column;
    padding-top: 150px;
  }

  .image-section,
  .info-section {
    flex: 1 1 100%;
    padding: 1rem 0.5rem;
  }

  .info-section h1 {
    font-size: 1.5rem;
  }

  .info-section .price {
    font-size: 1.2rem;
  }

  .options label {
    padding: 8px 10px;
    font-size: 0.9rem;
  }

  .add-to-cart {
    width: 100%;
    font-size: 1rem;
    padding: 12px;
  }

  .related-products .product-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  .related-products .product-item h2 {
    font-size: 1rem;
  }

  .footer {
    font-size: 0.9rem;
    text-align: center;
  }

  .Support {
    display: none;
  }
}