:root {
      --primary-color: #4CAF50;
      --secondary-color: #f0b90b;
      --background-dark: #1a1a1a;
      --text-light: #f0f0f0;
      --text-muted: #aaaaaa;
      --card-background: #2a2a2a;
      --border-color: #3a3a3a;
      --shadow-color: rgba(0, 0, 0, 0.4);
      --hover-shadow-color: rgba(0, 0, 0, 0.6);
      --header-offset: 120px;
    }

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

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

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

    .blog-list__timeline {
      position: relative;
      margin: 0 auto;
      padding: 20px 0;
      max-width: 900px;
    }

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

    .blog-list__timeline-entry {
      position: relative;
      margin-bottom: 60px;
      min-height: 120px;
      display: flex;
      justify-content: center;
      align-items: flex-start;
      flex-direction: column;
      text-align: center;
      z-index: 2;
    }

    .blog-list__timeline-date-point {
      position: relative;
      display: flex;
      justify-content: center;
      align-items: center;
      margin-bottom: 20px;
      width: 100%;
    }

    .blog-list__timeline-date-point::before {
      content: '';
      position: absolute;
      left: 50%;
      top: 50%;
      width: 20px;
      height: 20px;
      background: var(--primary-color);
      border: 3px solid var(--background-dark);
      border-radius: 50%;
      transform: translate(-50%, -50%);
      z-index: 3;
    }

    .blog-list__date {
      background-color: var(--primary-color);
      color: var(--background-dark);
      padding: 6px 12px;
      border-radius: 20px;
      font-size: 0.85em;
      font-weight: bold;
      white-space: nowrap;
      position: relative;
      z-index: 4;
    }

    .blog-list__card {
      background-color: var(--card-background);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 4px 15px var(--shadow-color);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      width: 90%;
      max-width: 450px;
      text-align: left;
    }

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

    .blog-list__image-wrapper {
      position: relative;
      padding-bottom: 56.25%;
      height: 0;
      overflow: hidden;
    }

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

    .blog-list__content {
      padding: 20px;
    }

    .blog-list__title {
      font-size: 1.25em;
      margin-top: 0;
      margin-bottom: 10px;
      line-height: 1.4;
    }

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

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

    .blog-list__summary {
      font-size: 0.95em;
      color: var(--text-muted);
      margin-bottom: 15px;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
      text-overflow: ellipsis;
      min-height: 3.8em;
    }

    .blog-list__read-more {
      display: inline-block;
      background-color: var(--primary-color);
      color: var(--background-dark);
      padding: 10px 20px;
      border-radius: 5px;
      text-decoration: none;
      font-weight: bold;
      transition: background-color 0.3s ease, color 0.3s ease;
      font-size: 0.9em;
    }

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

    @media (min-width: 768px) {
      .blog-list__timeline-entry {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 80px;
        text-align: left;
      }

      .blog-list__timeline-date-point {
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        width: auto;
        margin-bottom: 0;
      }
      .blog-list__timeline-date-point::before {
        top: 50%;
        transform: translate(-50%, -50%);
      }

      .blog-list__card {
        width: calc(50% - 60px);
        max-width: none;
      }

      .blog-list__timeline-entry:nth-child(odd) {
        justify-content: flex-start;
      }
      .blog-list__timeline-entry:nth-child(odd) .blog-list__card {
        margin-right: auto;
      }
      .blog-list__timeline-entry:nth-child(even) {
        justify-content: flex-end;
      }
      .blog-list__timeline-entry:nth-child(even) .blog-list__card {
        margin-left: auto;
      }
    }

    @media (min-width: 1024px) {
      .blog-list__timeline-entry {
        margin-bottom: 100px;
      }
      .blog-list__card {
        width: calc(50% - 80px);
      }
    }