:root {
      --primary-bg: #f0f2f5;
      --card-bg: #ffffff;
      --text-primary: #333333;
      --text-secondary: #666666;
      --text-date: #555555;
      --link-color: #0056b3;
      --link-hover-color: #003d80;
      --border-color: #e0e0e0;
      --shadow-color: rgba(0, 0, 0, 0.1);
      --header-offset: 120px;
    }

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

    .blog-list__section {
      padding: 30px 20px;
      max-width: 1200px;
      margin: 0 auto;
    }

    .blog-list__main-title {
      text-align: center;
      color: var(--text-primary);
      margin-bottom: 15px;
      font-size: 2.2em;
      line-height: 1.2;
    }

    .blog-list__description {
      text-align: center;
      color: var(--text-secondary);
      margin-bottom: 40px;
      font-size: 1.1em;
      line-height: 1.5;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }

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

    .blog-list__timeline-wrapper::before {
      content: '';
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 2px;
      background-color: var(--border-color);
      transform: translateX(-50%);
      z-index: 0;
      display: none;
    }

    .blog-list__timeline-item {
      position: relative;
      margin-bottom: 40px;
      display: flex;
      flex-direction: column;
      align-items: center;
      width: 100%;
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
    }

    .blog-list__timeline-badge {
      position: absolute;
      top: 0;
      left: 50%;
      width: 16px;
      height: 16px;
      background-color: var(--link-color);
      border: 3px solid var(--primary-bg);
      border-radius: 50%;
      transform: translate(-50%, -50%);
      z-index: 1;
      display: none;
    }

    .blog-list__date-box {
      background-color: var(--link-color);
      color: #ffffff;
      padding: 8px 15px;
      border-radius: 5px;
      margin-bottom: 15px;
      font-size: 0.9em;
      font-weight: bold;
      text-align: center;
      z-index: 1;
    }

    .blog-list__card {
      background-color: var(--card-bg);
      border-radius: 10px;
      box-shadow: 0 4px 15px var(--shadow-color);
      overflow: hidden;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      width: 100%;
    }

    .blog-list__card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    }

    .blog-list__image-link {
      display: block;
      height: 200px;
      overflow: hidden;
    }

    .blog-list__image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

    .blog-list__image:hover {
      transform: scale(1.05);
    }

    .blog-list__card-body {
      padding: 20px;
    }

    .blog-list__title {
      font-size: 1.25em;
      font-weight: bold;
      margin-bottom: 10px;
      line-height: 1.3;
    }

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

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

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

    .blog-list__keywords {
      margin-bottom: 15px;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .blog-list__keyword {
      background-color: #e9ecef;
      color: var(--text-secondary);
      padding: 5px 10px;
      border-radius: 5px;
      font-size: 0.85em;
    }

    .blog-list__read-more {
      display: inline-block;
      background-color: var(--link-color);
      color: #ffffff;
      padding: 10px 20px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
    }

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

    @media (min-width: 768px) {
      .blog-list__section {
        padding: 40px 30px;
      }

      .blog-list__main-title {
        font-size: 2.8em;
      }

      .blog-list__description {
        font-size: 1.2em;
      }

      .blog-list__timeline-wrapper {
        padding: 0;
      }

      .blog-list__timeline-wrapper::before {
        display: block;
        left: 50%;
        transform: translateX(-50%);
      }

      .blog-list__timeline-item {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 60px;
        width: 100%;
        max-width: 100%;
      }

      .blog-list__timeline-badge {
        display: block;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        z-index: 1;
      }

      .blog-list__date-box {
        position: static;
        margin-bottom: 0;
        width: 150px;
        flex-shrink: 0;
        background-color: transparent;
        color: var(--text-primary);
        font-size: 1em;
        font-weight: normal;
        text-align: center;
        padding: 0;
      }

      .blog-list__date {
        background-color: var(--link-color);
        color: #ffffff;
        padding: 8px 15px;
        border-radius: 5px;
        display: inline-block;
      }

      .blog-list__card {
        width: calc(50% - 100px);
        flex-shrink: 0;
      }

      .blog-list__timeline-item:nth-child(odd) {
        flex-direction: row;
        padding-left: 0;
        justify-content: flex-end;
      }
      .blog-list__timeline-item:nth-child(odd) .blog-list__date-box {
        order: 2;
        margin-left: 50px;
        text-align: left;
      }
      .blog-list__timeline-item:nth-child(odd) .blog-list__card {
        order: 1;
        margin-right: 50px;
      }

      .blog-list__timeline-item:nth-child(even) {
        flex-direction: row-reverse;
        padding-right: 0;
        justify-content: flex-end;
      }
      .blog-list__timeline-item:nth-child(even) .blog-list__date-box {
        order: 1;
        margin-right: 50px;
        text-align: right;
      }
      .blog-list__timeline-item:nth-child(even) .blog-list__card {
        order: 2;
        margin-left: 50px;
      }

      .blog-list__image-link {
        height: 200px;
      }
    }

    @media (min-width: 1024px) {
      .blog-list__section {
        padding: 50px 40px;
      }

      .blog-list__timeline-item {
        margin-bottom: 80px;
      }

      .blog-list__date-box {
        width: 180px;
      }

      .blog-list__card {
        width: calc(50% - 120px);
      }

      .blog-list__image-link {
        height: 250px;
      }
    }