:root {
      --primary-color: #007bff; 
      --text-color-dark: #333;
      --text-color-medium: #666;
      --text-color-light: #999;
      --background-light: #f8f8f8;
      --card-background: #ffffff;
      --shadow-light: 0 4px 12px rgba(0, 0, 0, 0.08);
      --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.15);
      --border-radius-medium: 10px;
      --header-offset: 120px; 
    }

    .blog-list {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--text-color-dark);
      background-color: var(--background-light);
      padding-top: var(--header-offset); 
      padding-bottom: 40px;
      min-height: 100vh;
    }

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

    .blog-list__title {
      font-size: 2.5em;
      color: var(--text-color-dark);
      text-align: center;
      margin-bottom: 40px;
      font-weight: bold;
      padding-top: 20px;
    }

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

    .blog-list__timeline-container::before {
      content: '';
      position: absolute;
      left: 50%;
      top: 0;
      width: 4px;
      height: 100%;
      background-color: var(--primary-color);
      transform: translateX(-50%);
      z-index: 1;
    }

    .blog-list__item {
      position: relative;
      margin-bottom: 40px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      z-index: 2;
    }

    .blog-list__item::after {
      content: '';
      position: absolute;
      left: 50%;
      top: 50%;
      width: 20px;
      height: 20px;
      background-color: var(--primary-color);
      border: 4px solid var(--background-light);
      border-radius: 50%;
      transform: translate(-50%, -50%);
      z-index: 3;
    }

    .blog-list__date-wrapper {
      position: absolute;
      width: calc(50% - 40px);
      text-align: right;
      padding-right: 20px;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
    }

    .blog-list__date {
      font-size: 1.1em;
      color: var(--text-color-medium);
      font-weight: bold;
      display: block;
    }

    .blog-list__card-link {
      display: block;
      text-decoration: none;
      color: inherit;
      width: calc(50% - 40px);
      padding: 0;
    }

    .blog-list__card {
      background-color: var(--card-background);
      border-radius: var(--border-radius-medium);
      box-shadow: var(--shadow-light);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      height: 100%;
    }

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

    .blog-list__card-image {
      width: 100%;
      padding-bottom: 56.25%; 
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      border-top-left-radius: var(--border-radius-medium);
      border-top-right-radius: var(--border-radius-medium);
    }

    .blog-list__card-content {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .blog-list__card-title {
      font-size: 1.25em;
      font-weight: bold;
      margin-top: 0;
      margin-bottom: 10px;
      color: var(--text-color-dark);
      line-height: 1.3;
    }

    .blog-list__card-summary {
      font-size: 0.95em;
      color: var(--text-color-medium);
      margin-bottom: 15px;
      flex-grow: 1;
      display: -webkit-box;
      -webkit-line-clamp: 3; 
      -webkit-box-orient: vertical;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .blog-list__read-more {
      display: inline-block;
      font-size: 0.9em;
      color: var(--primary-color);
      font-weight: bold;
      text-decoration: none;
      align-self: flex-start;
      transition: color 0.3s ease;
    }

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

    .blog-list__item:nth-child(even) .blog-list__date-wrapper {
      left: auto;
      right: 0;
      text-align: left;
      padding-left: 20px;
      padding-right: 0;
    }

    .blog-list__item:nth-child(even) .blog-list__card-link {
      margin-left: auto;
      padding-left: 40px;
      padding-right: 0;
    }

    .blog-list__item:nth-child(odd) .blog-list__card-link {
      margin-right: auto;
      padding-right: 40px;
      padding-left: 0;
    }

    @media (max-width: 1024px) {
      .blog-list__section {
        padding: 20px 15px;
      }

      .blog-list__title {
        font-size: 2em;
        margin-bottom: 30px;
      }

      .blog-list__timeline-container::before {
        left: 20px;
        transform: translateX(0);
      }

      .blog-list__item {
        justify-content: flex-start;
        flex-direction: column;
        align-items: flex-start;
        padding-left: 40px;
      }

      .blog-list__item::after {
        left: 20px;
        transform: translate(-50%, -50%);
      }

      .blog-list__date-wrapper {
        position: static;
        width: 100%;
        text-align: left;
        padding-right: 0;
        transform: none;
        margin-bottom: 10px;
        order: -1;
      }

      .blog-list__date {
        font-size: 1em;
      }

      .blog-list__card-link {
        width: 100%;
        padding-left: 0;
        padding-right: 0;
      }

      .blog-list__card {
        margin-left: 0;
        margin-right: 0;
      }

      .blog-list__item:nth-child(even) .blog-list__date-wrapper,
      .blog-list__item:nth-child(odd) .blog-list__date-wrapper {
        left: auto;
        right: auto;
        text-align: left;
        padding-left: 0;
        padding-right: 0;
      }

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

    @media (min-width: 768px) and (max-width: 1024px) {
      .blog-list__section {
        max-width: 900px;
      }
    }

    @media (max-width: 767px) {
      .blog-list__title {
        font-size: 1.8em;
        margin-bottom: 25px;
      }
      .blog-list__card-title {
        font-size: 1.15em;
      }
      .blog-list__card-summary {
        font-size: 0.9em;
      }
      .blog-list__read-more {
        font-size: 0.85em;
      }
    }