:root {
      --primary-color: #007bff; 
      --secondary-color: #6c757d; 
      --text-color-dark: #333333;
      --text-color-light: #ffffff;
      --background-color-light: #f8f9fa;
      --background-color-dark: #212529;
      --card-background: #ffffff;
      --border-color: #e9ecef;
      --shadow-light: rgba(0, 0, 0, 0.08);
      --shadow-hover: rgba(0, 0, 0, 0.15);
      --timeline-line-color: #ced4da;
      --timeline-dot-color: var(--primary-color);
    }

    .blog-list {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--text-color-dark);
      background-color: var(--background-color-light);
      padding: 20px;
      padding-top: var(--header-offset, 120px); 
      max-width: 1200px;
      margin: 0 auto;
    }

    .blog-list__section {
      padding: 20px 0;
    }

    .blog-list__heading {
      font-size: 28px;
      font-weight: bold;
      color: var(--text-color-dark);
      text-align: center;
      margin-bottom: 15px;
    }

    .blog-list__description {
      font-size: 16px;
      color: #666666;
      text-align: center;
      margin-bottom: 40px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

    .blog-list__container {
      display: grid;
      grid-template-columns: 1fr; 
      gap: 40px 20px; 
      position: relative;
      padding-left: 20px; 
    }

    .blog-list__container::before {
      content: '';
      position: absolute;
      left: 0;
      top: 0;
      width: 2px;
      height: 100%;
      background-color: var(--timeline-line-color);
    }

    .blog-list__item {
      display: flex;
      flex-direction: column;
      background-color: var(--card-background);
      border-radius: 10px;
      box-shadow: 0 4px 12px var(--shadow-light);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      position: relative;
      padding: 20px;
      margin-left: 20px; 
    }

    .blog-list__item:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px var(--shadow-hover);
    }

    .blog-list__item::before {
      content: '';
      position: absolute;
      left: -28px; 
      top: 25px; 
      width: 16px;
      height: 16px;
      background-color: var(--timeline-dot-color);
      border: 3px solid var(--card-background);
      border-radius: 50%;
      z-index: 1;
    }

    .blog-list__image-wrapper {
      width: 100%;
      padding-bottom: 56.25%; 
      position: relative;
      overflow: hidden;
      border-radius: 8px;
      margin-bottom: 15px;
    }

    .blog-list__image {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    .blog-list__content {
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .blog-list__title {
      font-size: 20px;
      font-weight: bold;
      margin-bottom: 10px;
      color: var(--text-color-dark);
      line-height: 1.3;
    }

    .blog-list__title-link {
      color: var(--text-color-dark);
      text-decoration: none;
      transition: color 0.2s ease;
    }

    .blog-list__title-link:hover {
      color: var(--primary-color);
    }

    .blog-list__summary {
      font-size: 15px;
      color: #666666;
      margin-bottom: 15px;
      overflow: hidden;
      display: -webkit-box;
      -webkit-line-clamp: 3; 
      -webkit-box-orient: vertical;
    }

    .blog-list__meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: #999999;
      margin-top: auto; 
      padding-top: 10px;
      border-top: 1px solid var(--border-color);
    }

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

    .blog-list__read-more {
      display: inline-block;
      background-color: var(--primary-color);
      color: var(--text-color-light);
      padding: 8px 15px;
      border-radius: 5px;
      text-decoration: none;
      font-size: 14px;
      transition: background-color 0.2s ease;
      white-space: nowrap;
    }

    .blog-list__read-more:hover {
      background-color: #0056b3; 
    }

    
    @media (min-width: 768px) {
      .blog-list__container {
        padding-left: 50px; 
      }
      .blog-list__container::before {
        left: 25px; 
      }
      .blog-list__item {
        margin-left: 0; 
        padding-left: 40px; 
      }
      .blog-list__item::before {
        left: 17px; 
        top: 30px;
        width: 20px;
        height: 20px;
        border-width: 4px;
      }
    }

    @media (min-width: 1024px) {
      .blog-list__container {
        display: block; 
        padding-left: 0;
      }
      .blog-list__container::before {
        left: 50%; 
        transform: translateX(-1px);
      }

      .blog-list__item {
        width: calc(50% - 40px); 
        margin-bottom: 40px;
        position: relative;
        padding: 30px;
        display: flex;
        flex-direction: column;
      }

      .blog-list__item:nth-child(odd) {
        float: left;
        clear: left;
        margin-right: 40px;
        margin-left: 0;
        text-align: right;
      }

      .blog-list__item:nth-child(even) {
        float: right;
        clear: right;
        margin-left: 40px;
        margin-right: 0;
        text-align: left;
      }

      .blog-list__item::before {
        left: auto;
        right: -55px; 
        top: 35px;
      }

      .blog-list__item:nth-child(even)::before {
        left: -55px; 
        right: auto;
      }

      .blog-list__item:nth-child(odd) .blog-list__image-wrapper {
        margin-left: auto;
        margin-right: 0;
      }
      .blog-list__item:nth-child(even) .blog-list__image-wrapper {
        margin-right: auto;
        margin-left: 0;
      }

      .blog-list__item:nth-child(odd) .blog-list__meta {
        justify-content: flex-end;
      }
      .blog-list__item:nth-child(even) .blog-list__meta {
        justify-content: flex-start;
      }
      .blog-list__item:nth-child(odd) .blog-list__read-more {
        margin-left: 15px;
      }
      .blog-list__item:nth-child(even) .blog-list__read-more {
        margin-right: 15px;
      }
      .blog-list__item:nth-child(odd) .blog-list__date {
        order: 2;
      }
      .blog-list__item:nth-child(even) .blog-list__date {
        order: 1;
      }

      .blog-list__container::after {
        content: '';
        display: block;
        clear: both;
      }
    }

    
    .blog-list__title-link:focus,
    .blog-list__read-more:focus {
      outline: 2px solid var(--primary-color);
      outline-offset: 2px;
    }