:root {
      --primary-color: #0056b3; 
      --secondary-color: #007bff; 
      --text-color-dark: #333333;
      --text-color-medium: #555555; 
      --text-color-light: #6a6a6a; 
      --background-color-light: #f8f8f8;
      --card-background: #ffffff;
      --border-color: #e0e0e0;
      --header-offset: 120px; 
    }

    .blog-list {
      padding: var(--header-offset, 120px) 20px 60px;
      max-width: 1200px;
      margin: 0 auto;
      position: relative;
      font-family: Arial, sans-serif;
      color: var(--text-color-dark);
      background-color: var(--background-color-light);
    }

    .blog-list::before {
      content: '';
      position: absolute;
      top: var(--header-offset, 120px);
      bottom: 0;
      left: 50%;
      width: 4px;
      background-color: var(--border-color);
      transform: translateX(-50%);
      z-index: 0;
      display: none; 
    }

    .blog-list__heading {
      text-align: center;
      margin-bottom: 40px;
      font-size: 2.5em;
      color: var(--primary-color);
      position: relative;
      padding-bottom: 15px;
    }

    .blog-list__heading::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--secondary-color);
      border-radius: 2px;
    }

    .blog-list__timeline {
      position: relative;
      margin-top: 40px;
    }

    .blog-list__item {
      display: flex;
      margin-bottom: 40px;
      position: relative;
      background-color: var(--card-background);
      border-radius: 12px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      overflow: hidden;
      flex-direction: column; 
    }

    .blog-list__item:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    }

    .blog-list__image-wrapper {
      width: 100%;
      padding-top: 56.25%; 
      position: relative;
      background-color: #eee; 
      border-top-left-radius: 12px;
      border-top-right-radius: 12px;
      overflow: hidden;
    }

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

    .blog-list__content {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .blog-list__title {
      font-size: 20px;
      font-weight: bold;
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .blog-list__title-link {
      color: var(--text-color-dark);
      text-decoration: none;
      transition: color 0.3s ease;
    }

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

    .blog-list__summary {
      font-size: 15px;
      color: var(--text-color-medium);
      line-height: 1.6;
      margin-bottom: 15px;
      display: -webkit-box;
      -webkit-line-clamp: 3; 
      -webkit-box-orient: vertical;
      overflow: hidden;
      text-overflow: ellipsis;
      flex-grow: 1;
    }

    .blog-list__meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: 15px;
      padding-top: 15px;
      border-top: 1px solid var(--border-color);
    }

    .blog-list__date {
      font-size: 13px;
      color: var(--text-color-light);
    }

    .blog-list__read-more {
      display: inline-block;
      padding: 8px 15px;
      background-color: var(--primary-color);
      color: #ffffff;
      text-decoration: none;
      border-radius: 5px;
      font-size: 14px;
      transition: background-color 0.3s ease;
    }

    .blog-list__read-more:hover {
      background-color: var(--secondary-color);
    }

    @media (min-width: 768px) {
      .blog-list__item {
        flex-direction: row; 
        max-width: 700px; 
        margin-left: auto;
        margin-right: auto;
      }

      .blog-list__image-wrapper {
        width: 40%; 
        padding-top: 0;
        height: 180px; 
        border-radius: 12px 0 0 12px; 
      }

      .blog-list__content {
        width: 60%; 
        padding: 15px 20px;
      }

      .blog-list__image {
        border-radius: 12px 0 0 12px;
      }
    }

    @media (min-width: 1024px) {
      .blog-list::before {
        display: block; 
      }

      .blog-list__item {
        width: 45%; 
        margin-bottom: 60px;
        flex-direction: row;
        box-sizing: border-box;
        position: relative;
        max-width: none; 
      }

      .blog-list__item:nth-child(even) {
        margin-left: 50%; 
        padding-left: 40px; 
      }

      .blog-list__item:nth-child(odd) {
        margin-right: 50%; 
        padding-right: 40px; 
        text-align: right;
      }

      .blog-list__item:nth-child(odd) .blog-list__image-wrapper {
        order: 2; 
        border-radius: 0 12px 12px 0;
      }

      .blog-list__item:nth-child(odd) .blog-list__content {
        order: 1; 
        text-align: right;
      }

      .blog-list__item:nth-child(odd) .blog-list__image {
        border-radius: 0 12px 12px 0;
      }

      .blog-list__item:nth-child(even) .blog-list__image-wrapper {
        order: 1; 
        border-radius: 12px 0 0 12px;
      }

      .blog-list__item:nth-child(even) .blog-list__content {
        order: 2; 
        text-align: left;
      }

      .blog-list__item:nth-child(even) .blog-list__image {
        border-radius: 12px 0 0 12px;
      }

      .blog-list__item::after {
        content: '';
        position: absolute;
        width: 20px;
        height: 20px;
        background-color: var(--primary-color);
        border: 4px solid var(--card-background);
        border-radius: 50%;
        top: 20px; 
        z-index: 1;
        box-shadow: 0 0 0 2px var(--primary-color); 
      }

      .blog-list__item:nth-child(even)::after {
        left: 50%;
        transform: translateX(-50%) translateX(-20px); 
      }

      .blog-list__item:nth-child(odd)::after {
        right: 50%;
        transform: translateX(50%) translateX(20px); 
      }

      .blog-list__item:nth-child(odd) .blog-list__meta {
        justify-content: flex-end; 
      }
      .blog-list__item:nth-child(odd) .blog-list__read-more {
        margin-left: 15px; 
      }
    }

    .blog-list__title-link, .blog-list__read-more {
      color: var(--primary-color);
    }
    .blog-list__read-more {
      background-color: var(--primary-color);
      color: #ffffff;
    }
    .blog-list__read-more:hover {
      background-color: var(--secondary-color);
    }
    .blog-list__title-link {
      color: var(--text-color-dark);
    }
    .blog-list__title-link:hover {
      color: var(--primary-color);
    }
    .blog-list__summary {
      color: var(--text-color-medium);
    }
    .blog-list__date {
      color: var(--text-color-light);
    }
    .blog-list__heading {
      color: var(--primary-color);
    }