:root {
    --primary-color: hsl(140, 70%, 40%); 
    --primary-color-dark: hsl(140, 70%, 30%);
    --text-color: #333;
    --secondary-text-color: #666;
    --light-text-color: #777; 
    --background-light: #f9f9f9;
    --card-background: #ffffff;
    --border-color: #eee;
    --shadow-light: rgba(0, 0, 0, 0.08);
    --shadow-hover: rgba(0, 0, 0, 0.15);
    --header-offset: 120px; 
  }

  .blog-list {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-light);
    padding-top: var(--header-offset);
  }

  .blog-list__hero {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-color-dark));
    color: #fff;
    padding: 60px 20px;
    text-align: center;
    border-bottom-left-radius: 20px;
    border-bottom-right-radius: 20px;
    margin-bottom: 40px;
  }

  .blog-list__hero-title {
    font-size: 2.5em;
    margin-bottom: 15px;
    font-weight: bold;
    color: #fff;
  }

  .blog-list__hero-description {
    font-size: 1.1em;
    max-width: 800px;
    margin: 0 auto;
    opacity: 0.9;
  }

  .blog-list__timeline-section {
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
  }

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

  .blog-list__timeline-container::after {
    content: '';
    position: absolute;
    width: 4px;
    background-color: var(--primary-color);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -2px;
    z-index: 0;
  }

  .blog-list__item {
    padding: 20px 0;
    position: relative;
    width: 50%;
    box-sizing: border-box;
    z-index: 1;
  }

  .blog-list__item:nth-child(odd) {
    left: 0;
    padding-right: 45px;
  }

  .blog-list__item:nth-child(even) {
    left: 50%;
    padding-left: 45px;
  }

  .blog-list__item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    right: -10px;
    background-color: var(--primary-color-dark);
    border: 4px solid var(--card-background);
    top: 50%;
    border-radius: 50%;
    z-index: 2;
    transform: translateY(-50%);
  }

  .blog-list__item:nth-child(even)::after {
    left: -10px;
  }

  .blog-list__item-content {
    background-color: var(--card-background);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 15px var(--shadow-light);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    min-height: 200px;
    display: flex;
    flex-direction: column;
  }

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

  .blog-list__item-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 100%;
  }

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

  .blog-list__item-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
  }

  .blog-list__item-text-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
  }

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

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

  .blog-list__item-date {
    font-size: 13px;
    color: var(--light-text-color);
    margin-top: auto;
    display: block;
    margin-bottom: 10px;
  }

  .blog-list__read-more {
    display: inline-flex;
    align-items: center;
    color: var(--primary-color);
    font-weight: bold;
    text-decoration: none;
    font-size: 15px;
    transition: color 0.3s ease;
  }

  .blog-list__read-more:hover {
    color: var(--primary-color-dark);
  }

  .blog-list__read-more-icon {
    margin-left: 5px;
    transition: transform 0.3s ease;
  }

  .blog-list__read-more:hover .blog-list__read-more-icon {
    transform: translateX(5px);
  }

  .blog-list__item-date-mobile {
    display: none;
    font-size: 13px;
    color: var(--light-text-color);
    margin-bottom: 10px;
    text-align: center;
  }

  @media (max-width: 1024px) {
    .blog-list__timeline-container::after {
      left: 20px;
    }

    .blog-list__item {
      width: 100%;
      padding-left: 45px;
      padding-right: 0;
    }

    .blog-list__item:nth-child(odd),
    .blog-list__item:nth-child(even) {
      left: 0;
      padding-right: 0;
    }

    .blog-list__item::after {
      left: 10px;
      right: auto;
    }

    .blog-list__item:nth-child(even)::after {
      left: 10px;
    }
  }

  @media (max-width: 768px) {
    .blog-list__hero {
      padding: 40px 15px;
      margin-bottom: 30px;
    }

    .blog-list__hero-title {
      font-size: 2em;
    }

    .blog-list__hero-description {
      font-size: 1em;
    }

    .blog-list__timeline-section {
      padding: 15px;
    }

    .blog-list__timeline-container::after {
      left: 15px;
    }

    .blog-list__item {
      padding-left: 40px;
      padding-right: 0;
    }

    .blog-list__item::after {
      left: 5px;
      width: 16px;
      height: 16px;
      top: 30px;
      transform: translateY(0);
    }

    .blog-list__item-content {
      padding: 20px;
      min-height: auto;
    }

    .blog-list__item-title {
      font-size: 18px;
    }

    .blog-list__item-summary {
      font-size: 14px;
      -webkit-line-clamp: 2;
    }

    .blog-list__item-date {
      display: none;
    }

    .blog-list__item-date-mobile {
      display: block;
      position: absolute;
      top: 0px;
      left: 40px;
      width: calc(100% - 40px);
      text-align: left;
      margin-bottom: 0;
    }
    .blog-list__item-content {
      margin-top: 30px;
    }
  }

  @media (max-width: 480px) {
    .blog-list__hero-title {
      font-size: 1.8em;
    }
  }