:root {
      --primary-color: #007bff; 
      --button-background-color: #0056b3; 
      --secondary-color: #6c757d;
      --text-color-dark: #333333;
      --text-color-light: #ffffff;
      --background-light: #f8f9fa;
      --border-color: #e0e0e0;
      --shadow-light: rgba(0, 0, 0, 0.08);
      --shadow-hover: rgba(0, 0, 0, 0.15);
    }

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

    .blog-list__header {
      text-align: center;
      margin-bottom: 40px;
      padding: 0 15px;
    }

    .blog-list__heading {
      font-size: 2.5em;
      color: var(--text-color-dark);
      margin-bottom: 10px;
      font-weight: bold;
      line-height: 1.2;
    }

    .blog-list__description {
      font-size: 1.1em;
      color: var(--secondary-color);
      max-width: 800px;
      margin: 0 auto;
      line-height: 1.6;
    }

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

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

    .blog-list__item {
      display: flex;
      position: relative;
      margin-bottom: 40px;
      width: 100%;
      box-sizing: border-box;
      padding-left: 50%;
      align-items: flex-start;
      min-height: 150px;
    }

    .blog-list__item:nth-child(even) {
      padding-left: 0;
      padding-right: 50%;
    }

    .blog-list__item-card {
      background-color: var(--text-color-light);
      border-radius: 10px;
      box-shadow: 0 4px 12px var(--shadow-light);
      transition: all 0.3s ease;
      width: calc(100% - 40px);
      position: relative;
      padding: 20px;
      box-sizing: border-box;
      margin-left: 20px;
    }

    .blog-list__item:nth-child(even) .blog-list__item-card {
      margin-left: 0;
      margin-right: 20px;
    }

    .blog-list__item-card:hover {
      box-shadow: 0 6px 18px var(--shadow-hover);
      transform: translateY(-2px);
    }

    .blog-list__date-point {
      position: absolute;
      top: 15px;
      left: 50%;
      width: 16px;
      height: 16px;
      background-color: var(--primary-color);
      border: 3px solid var(--text-color-light);
      border-radius: 50%;
      transform: translateX(-50%);
      z-index: 1;
      display: flex;
      align-items: center;
      justify-content: center;
    }

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

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

    .blog-list__title {
      font-size: 1.25em;
      font-weight: bold;
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .blog-list__title-link {
      color: var(--text-color-dark);
      text-decoration: none;
      transition: color 0.2s ease;
    }

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

    .blog-list__summary {
      font-size: 0.95em;
      color: var(--secondary-color);
      margin-bottom: 15px;
      line-height: 1.6;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
      text-overflow: ellipsis;
      min-height: 3em;
    }

    .blog-list__meta {
      font-size: 0.8em;
      color: var(--secondary-color);
      margin-bottom: 15px;
      display: block;
    }

    .blog-list__read-more {
      display: inline-block;
      padding: 8px 15px;
      background-color: var(--button-background-color);
      color: var(--text-color-light);
      text-decoration: none;
      border-radius: 5px;
      font-size: 0.9em;
      transition: background-color 0.2s ease;
    }

    .blog-list__read-more:hover {
      background-color: #003f8c;
    }

    .blog-list h1, .blog-list h2, .blog-list h3, .blog-list h4, .blog-list h5, .blog-list h6 {
        color: var(--text-color-dark);
        line-height: 1.3;
    }
    .blog-list p {
        color: var(--secondary-color);
        line-height: 1.6;
    }

    @media (max-width: 767px) {
      .blog-list__timeline-container::before {
        left: 20px;
        transform: translateX(0);
      }

      .blog-list__item {
        padding-left: 0;
        padding-right: 0;
        margin-bottom: 30px;
        justify-content: flex-start;
      }
      .blog-list__item:nth-child(even) {
        padding-left: 0;
        padding-right: 0;
      }

      .blog-list__item-card {
        margin-left: 40px;
        margin-right: 0;
        width: calc(100% - 60px);
      }
      .blog-list__item:nth-child(even) .blog-list__item-card {
        margin-left: 40px;
        margin-right: 0;
      }
      
      .blog-list__date-point {
        left: 20px;
        transform: translateX(-50%);
        top: 0px;
      }
      .blog-list__item:nth-child(even) .blog-list__date-point {
        left: 20px;
      }
    }

    @media (min-width: 768px) {
      .blog-list__heading {
        font-size: 3em;
      }
      .blog-list__description {
        font-size: 1.2em;
      }

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

      .blog-list__item {
        padding-left: 50%;
        justify-content: flex-start;
      }
      .blog-list__item:nth-child(even) {
        padding-left: 0;
        padding-right: 50%;
        justify-content: flex-end;
      }

      .blog-list__item-card {
        width: calc(100% - 40px);
        margin-left: 20px;
      }
      .blog-list__item:nth-child(even) .blog-list__item-card {
        margin-left: 0;
        margin-right: 20px;
      }
      
      .blog-list__date-point {
        left: 50%;
        transform: translateX(-50%);
        top: 20px;
      }
    }

    @media (min-width: 1024px) {
      .blog-list__heading {
        font-size: 3.5em;
      }
      .blog-list__item-card {
        padding: 25px;
      }
      .blog-list__title {
        font-size: 1.35em;
      }
      .blog-list__summary {
        font-size: 1em;
      }
      .blog-list__meta {
        font-size: 0.85em;
      }
      .blog-list__read-more {
        padding: 10px 20px;
        font-size: 1em;
      }
    }