:root {
      --primary-bg-color: #1a1a1a;
      --secondary-bg-color: #2a2a2a;
      --text-color-light: #f0f0f0;
      --text-color-medium: #cccccc;
      --text-color-dark: #999999;
      --accent-color: #ffd700; 
      --border-color: #333333;
      --card-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
      --card-shadow-hover: 0 8px 16px rgba(0, 0, 0, 0.5);
      --header-offset: 120px; 
    }

    .blog-list {
      background-color: var(--primary-bg-color);
      color: var(--text-color-light);
      padding-top: var(--header-offset);
      padding-bottom: 60px;
      min-height: 100vh;
    }

    .blog-list__container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
      position: relative;
    }

    .blog-list__heading {
      text-align: center;
      font-size: 2.5em;
      color: var(--accent-color);
      margin-bottom: 50px;
      padding-top: 40px;
      font-weight: bold;
    }

    .blog-list__description {
      text-align: center;
      font-size: 1.1em;
      color: var(--text-color-medium);
      margin-bottom: 60px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.6;
    }

    
    .blog-list__timeline {
      position: relative;
      padding: 20px 0;
    }

    .blog-list__timeline::before {
      content: '';
      position: absolute;
      top: 0;
      bottom: 0;
      left: 20px; 
      width: 4px;
      background: var(--border-color);
      transform: translateX(-50%);
      z-index: 1;
    }

    .blog-list__item {
      display: flex;
      flex-direction: column; 
      width: 100%; 
      margin-left: auto;
      margin-right: auto;
      margin-bottom: 40px; 
      position: relative;
      background-color: var(--secondary-bg-color);
      border-radius: 12px;
      box-shadow: var(--card-shadow);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      overflow: hidden;
      border: 1px solid var(--border-color);
    }

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

    .blog-list__item::after {
      content: '';
      position: absolute;
      top: 20px; 
      left: 20px; 
      width: 20px;
      height: 20px;
      background: var(--accent-color);
      border: 4px solid var(--primary-bg-color);
      border-radius: 50%;
      z-index: 2;
      transform: translateX(-50%);
    }

    .blog-list__image-wrapper {
      width: 100%;
      height: auto;
      border-radius: 10px 10px 0 0; 
      overflow: hidden;
    }
    .blog-list__item:nth-child(odd) .blog-list__image-wrapper {
        border-radius: 10px 10px 0 0; 
    }

    .blog-list__cover-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      aspect-ratio: 16 / 9; 
    }

    .blog-list__content {
      width: 100%;
      padding: 20px;
      padding-left: 40px; 
      padding-right: 20px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .blog-list__item:nth-child(even) .blog-list__content,
    .blog-list__item:nth-child(odd) .blog-list__content {
      padding-left: 40px;
      padding-right: 20px;
    }

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

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

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

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

    .blog-list__meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: auto;
    }

    .blog-list__published-date {
      font-size: 13px;
      color: var(--text-color-dark);
    }

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

    .blog-list__read-more:hover {
      background-color: #e6c200; 
      color: var(--primary-bg-color);
    }

    
    @media (max-width: 767px) {
      .blog-list__container {
        padding: 0 10px;
      }
      .blog-list__heading {
        font-size: 1.8em;
        margin-bottom: 30px;
      }
      .blog-list__description {
        font-size: 1em;
        margin-bottom: 40px;
      }
      .blog-list__summary {
        font-size: 14px;
        -webkit-line-clamp: 4; 
      }
      .blog-list__read-more {
        padding: 6px 12px;
        font-size: 13px;
      }
    }

    
    @media (min-width: 768px) and (max-width: 1024px) {
        .blog-list__item {
            width: 85%; 
        }
        .blog-list__heading {
            font-size: 2.2em;
        }
        .blog-list__description {
            font-size: 1.05em;
        }
    }

    
    @media (min-width: 1025px) {
      .blog-list__timeline::before {
        left: 50%; 
        transform: translateX(-50%);
      }

      .blog-list__item {
        flex-direction: row; 
        width: 75%; 
        margin-left: 0;
        margin-right: auto;
        margin-bottom: 60px; 
      }

      .blog-list__item:nth-child(even) {
          transform: translateX(-25%); 
      }

      .blog-list__item:nth-child(odd) {
          flex-direction: row-reverse; 
          transform: translateX(25%); 
          margin-right: 0;
          margin-left: auto;
      }

      .blog-list__item::after {
          top: 20px; 
          transform: translateX(-50%);
      }

      .blog-list__item:nth-child(even)::after {
          left: 100%; 
      }

      .blog-list__item:nth-child(odd)::after {
          left: auto; 
          right: 100%; 
          transform: translateX(50%); 
      }

      .blog-list__image-wrapper {
        border-radius: 10px 0 0 10px; 
      }

      .blog-list__item:nth-child(odd) .blog-list__image-wrapper {
        border-radius: 0 10px 10px 0; 
      }

      .blog-list__content {
        padding: 20px;
      }
      .blog-list__item:nth-child(even) .blog-list__content {
        padding-left: 20px;
        padding-right: 40px; 
      }
      .blog-list__item:nth-child(odd) .blog-list__content {
        padding-right: 20px;
        padding-left: 40px; 
      }
    }