:root {
      --primary-color: #e44d26;
      --secondary-color: #2c3e50;
      --text-color: #333;
      --light-text-color: #7f8c8d;
      --background-color: #f8f9fa;
      --card-background: #ffffff;
      --border-color: #e0e0e0;
      --header-offset: 120px;
    }

    .blog-detail {
      font-family: 'Arial', sans-serif;
      background-color: var(--background-color);
      color: var(--text-color);
      line-height: 1.6;
      padding-top: var(--header-offset, 120px);
      padding-bottom: 40px;
    }

    .blog-detail__post {
      max-width: 800px;
      margin: 0 auto;
      background-color: var(--card-background);
      border-radius: 12px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
      padding: 30px;
      overflow: hidden;
    }

    .blog-detail__header {
      margin-bottom: 25px;
      text-align: center;
    }

    .blog-detail__title {
      font-size: 38px;
      color: var(--secondary-color);
      font-weight: 700;
      margin-bottom: 15px;
      line-height: 1.2;
    }

    .blog-detail__meta {
      display: flex;
      justify-content: center;
      align-items: center;
      font-size: 14px;
      color: var(--light-text-color);
      flex-wrap: wrap;
      gap: 10px;
    }

    .blog-detail__date {
      white-space: nowrap;
    }

    .blog-detail__keywords {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .blog-detail__keyword {
      background-color: #eef;
      color: #4a6fa5;
      padding: 5px 12px;
      border-radius: 20px;
      font-size: 13px;
      white-space: nowrap;
      transition: background-color 0.3s ease;
    }

    .blog-detail__keyword:hover {
      background-color: #ddeeff;
    }

    .blog-detail__cover {
      width: 100%;
      max-height: 400px;
      object-fit: cover;
      border-radius: 8px;
      margin-bottom: 30px;
      display: block;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }

    .blog-detail__content {
      font-size: 17px;
      color: var(--text-color);
      margin-bottom: 40px;
    }

    .blog-detail__related-posts {
      margin-top: 50px;
      padding-top: 30px;
      border-top: 1px solid var(--border-color);
    }

    .blog-detail__related-title {
      font-size: 28px;
      color: var(--secondary-color);
      font-weight: 600;
      margin-bottom: 25px;
      text-align: center;
    }

    .blog-detail__related-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 25px;
    }

    .blog-detail__related-item {
      display: flex;
      flex-direction: column;
      background-color: var(--card-background);
      border-radius: 10px;
      overflow: hidden;
      text-decoration: none;
      color: var(--text-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      min-height: 180px;
      position: relative;
      padding: 15px;
      justify-content: flex-end;
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      background-image: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0) 50%), url('https://via.placeholder.com/400x250/3498db/ffffff?text=Bài+viết+liên+quan');
    }

    .blog-detail__related-item:nth-child(2) {
      background-image: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0) 50%), url('https://via.placeholder.com/400x250/27ae60/ffffff?text=Bài+viết+liên+quan');
    }

    .blog-detail__related-item:nth-child(3) {
      background-image: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0) 50%), url('https://via.placeholder.com/400x250/f39c12/ffffff?text=Bài+viết+liên+quan');
    }

    .blog-detail__related-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 6px 25px rgba(0, 0, 0, 0.12);
    }

    .blog-detail__related-item-title {
      font-size: 19px;
      font-weight: 600;
      color: #ffffff;
      margin-bottom: 5px;
      line-height: 1.3;
    }

    .blog-detail__related-item-summary {
      font-size: 14px;
      color: #e0e0e0;
    }

    @media (max-width: 768px) {
      .blog-detail__post {
        padding: 20px;
        margin: 0 15px;
      }

      .blog-detail__title {
        font-size: 30px;
        margin-bottom: 10px;
      }

      .blog-detail__meta {
        font-size: 13px;
        flex-direction: column;
        gap: 5px;
      }

      .blog-detail__date {
        margin-right: 0;
      }

      .blog-detail__keywords {
        justify-content: center;
      }

      .blog-detail__keyword {
        padding: 4px 10px;
        font-size: 12px;
      }

      .blog-detail__cover {
        max-height: 250px;
        margin-bottom: 20px;
      }

      .blog-detail__content {
        font-size: 16px;
        margin-bottom: 30px;
      }

      .blog-detail__related-title {
        font-size: 24px;
        margin-bottom: 20px;
      }

      .blog-detail__related-list {
        grid-template-columns: 1fr;
      }

      .blog-detail__related-item {
        min-height: 150px;
        padding: 10px;
      }

      .blog-detail__related-item-title {
        font-size: 17px;
      }

      .blog-detail__related-item-summary {
        font-size: 13px;
      }
    }

    @media (max-width: 480px) {
      .blog-detail__post {
        padding: 15px;
        margin: 0 10px;
      }

      .blog-detail__title {
        font-size: 26px;
      }
    }