:root {
      --primary-color: #e44d26;
      --secondary-color: #333;
      --text-color-dark: #222;
      --text-color-medium: #666;
      --text-color-light: #999;
      --background-light: #f8f8f8;
      --card-background: #ffffff;
      --border-radius-base: 10px;
      --shadow-base: 0 4px 12px rgba(0, 0, 0, 0.08);
      --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.15);
      --header-offset: 120px;
    }

    .blog-list {
      font-family: 'Arial', sans-serif;
      line-height: 1.6;
      color: var(--text-color-dark);
      padding: 20px;
      padding-top: var(--header-offset, 120px);
      background-color: var(--background-light);
      min-height: 100vh;
      box-sizing: border-box;
    }

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

    .blog-list__title {
      font-size: 2.5em;
      color: var(--primary-color);
      margin-bottom: 10px;
      font-weight: bold;
    }

    .blog-list__description {
      font-size: 1.1em;
      color: var(--text-color-medium);
      max-width: 800px;
      margin: 0 auto;
    }

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

    .blog-list__timeline::before {
      content: '';
      position: absolute;
      width: 4px;
      background-color: var(--primary-color);
      top: 0;
      bottom: 0;
      left: 50%;
      margin-left: -2px;
      z-index: 0;
      display: none;
    }

    .blog-list__timeline-item {
      padding: 10px 0;
      position: relative;
      width: 100%;
      box-sizing: border-box;
      z-index: 1;
    }

    .blog-list__timeline-item::after {
      content: '';
      position: absolute;
      width: 20px;
      height: 20px;
      background-color: var(--primary-color);
      border: 4px solid var(--card-background);
      top: 30px;
      border-radius: 50%;
      z-index: 2;
      left: 50%;
      transform: translateX(-50%);
      display: none;
    }

    .blog-list__timeline-content {
      background-color: var(--card-background);
      padding: 25px;
      border-radius: var(--border-radius-base);
      box-shadow: var(--shadow-base);
      transition: all 0.3s ease;
      position: relative;
      margin: 0 15px;
    }

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

    .blog-list__timeline-image {
      width: 100%;
      aspect-ratio: 16 / 9;
      object-fit: cover;
      border-radius: calc(var(--border-radius-base) - 2px);
      margin-bottom: 15px;
      display: block;
    }

    .blog-list__timeline-title {
      font-size: 1.4em;
      font-weight: bold;
      margin-top: 0;
      margin-bottom: 10px;
      line-height: 1.3;
    }

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

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

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

    .blog-list__timeline-date {
      font-size: 0.85em;
      color: var(--text-color-light);
      margin-bottom: 10px;
      display: block;
      text-align: right;
    }

    .blog-list__timeline-read-more {
      display: inline-block;
      background-color: var(--primary-color);
      color: var(--card-background);
      padding: 10px 20px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease;
      font-size: 0.95em;
    }

    .blog-list__timeline-read-more:hover {
      background-color: #d14220;
    }

    @media (min-width: 768px) {
      .blog-list {
        padding: 30px;
        padding-top: var(--header-offset, 120px);
      }
      .blog-list__timeline::before,
      .blog-list__timeline-item::after {
        display: block;
      }

      .blog-list__timeline-item {
        width: 50%;
        margin-bottom: 40px;
      }

      .blog-list__timeline-item:nth-child(odd) {
        float: left;
        clear: both;
        padding-right: 45px;
      }

      .blog-list__timeline-item:nth-child(even) {
        float: right;
        clear: both;
        padding-left: 45px;
      }

      .blog-list__timeline-item:nth-child(odd)::after {
        left: calc(100% - 10px);
        transform: translateX(-50%);
      }

      .blog-list__timeline-item:nth-child(even)::after {
        left: 10px;
        transform: translateX(-50%);
      }

      .blog-list__timeline-content {
        margin: 0;
      }

      .blog-list__timeline-item:nth-child(odd) .blog-list__timeline-content {
        text-align: right;
      }
      .blog-list__timeline-item:nth-child(odd) .blog-list__timeline-image {
        margin-left: auto;
        margin-right: 0;
      }
      .blog-list__timeline-item:nth-child(odd) .blog-list__timeline-date {
        text-align: right;
      }
      .blog-list__timeline-item:nth-child(even) .blog-list__timeline-content {
        text-align: left;
      }
      .blog-list__timeline-item:nth-child(even) .blog-list__timeline-image {
        margin-left: 0;
        margin-right: auto;
      }
      .blog-list__timeline-item:nth-child(even) .blog-list__timeline-date {
        text-align: left;
      }
    }

    @media (min-width: 1024px) {
      .blog-list {
        padding: 40px;
        padding-top: var(--header-offset, 120px);
      }
      .blog-list__title {
        font-size: 3em;
      }
      .blog-list__description {
        font-size: 1.2em;
      }
      .blog-list__timeline-item {
        margin-bottom: 60px;
      }
    }