:root {
    --blog-list-bg-color: hsl(220, 10%, 10%);
    --blog-list-text-color: hsl(0, 0%, 90%);
    --blog-list-secondary-text-color: hsl(0, 0%, 70%);
    --blog-list-accent-color: hsl(39, 100%, 50%);
    --blog-list-card-bg-color: hsl(220, 10%, 15%);
    --blog-list-border-radius: 12px;
    --blog-list-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    --blog-list-shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.5);
  }

  .blog-list {
    font-family: Arial, sans-serif;
    color: var(--blog-list-text-color);
    background-color: var(--blog-list-bg-color);
    line-height: 1.6;
    padding-bottom: 40px;
  }

  .blog-list__hero {
    text-align: center;
    padding: var(--header-offset, 120px) 20px 60px;
    background: linear-gradient(135deg, var(--blog-list-bg-color) 0%, hsl(220, 15%, 20%) 100%);
    border-bottom: 2px solid var(--blog-list-accent-color);
  }

  .blog-list__hero-title {
    font-size: 2.5em;
    color: var(--blog-list-accent-color);
    margin-bottom: 15px;
    font-weight: bold;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
  }

  .blog-list__hero-description {
    font-size: 1.1em;
    color: var(--blog-list-secondary-text-color);
    max-width: 800px;
    margin: 0 auto;
  }

  .blog-list__section {
    padding: 40px 20px;
    max-width: 1200px;
    margin: 0 auto;
  }

  .blog-list__section-title {
    text-align: center;
    font-size: 2em;
    color: var(--blog-list-text-color);
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 15px;
  }

  .blog-list__section-title::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--blog-list-accent-color);
    border-radius: 2px;
  }

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

  .blog-list__timeline-line {
    position: absolute;
    width: 4px;
    background-color: var(--blog-list-accent-color);
    top: 0;
    bottom: 0;
    left: 20px;
    border-radius: 2px;
  }

  .blog-list__timeline-item {
    display: flex;
    position: relative;
    margin-bottom: 60px;
    padding-left: 50px;
    align-items: flex-start;
  }

  .blog-list__timeline-marker {
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: var(--blog-list-accent-color);
    border: 4px solid var(--blog-list-bg-color);
    border-radius: 50%;
    top: 0;
    left: 20px;
    transform: translateX(-50%);
    z-index: 1;
  }

  .blog-list__card {
    background-color: var(--blog-list-card-bg-color);
    border-radius: var(--blog-list-border-radius);
    box-shadow: var(--blog-list-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
    width: 100%;
    margin-left: 20px;
  }

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

  .blog-list__card-link {
    display: block;
    text-decoration: none;
    color: inherit;
  }

  .blog-list__card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

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

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

  .blog-list__card-title-link {
    color: var(--blog-list-text-color);
    text-decoration: none;
    transition: color 0.3s ease;
  }

  .blog-list__card-title-link:hover {
    color: var(--blog-list-accent-color);
  }

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

  .blog-list__card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 15px;
    font-size: 0.8em;
    color: var(--blog-list-secondary-text-color);
  }

  .blog-list__card-keyword {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 5px 10px;
    border-radius: 5px;
    color: var(--blog-list-text-color);
    font-size: 0.75em;
  }

  .blog-list__card-date {
    font-size: 0.85em;
    color: var(--blog-list-secondary-text-color);
  }

  .blog-list__card-read-more {
    display: inline-block;
    background-color: var(--blog-list-accent-color);
    color: var(--blog-list-bg-color);
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.2s ease;
    font-size: 0.9em;
  }

  .blog-list__card-read-more:hover {
    background-color: hsl(39, 100%, 60%);
    transform: translateY(-2px);
  }

  @media (min-width: 768px) {
    .blog-list__timeline-line {
      left: 50%;
      transform: translateX(-50%);
    }

    .blog-list__timeline-item {
      width: 100%;
      padding-left: 0;
      justify-content: center;
      margin-bottom: 80px;
    }

    .blog-list__timeline-item:nth-child(odd) {
      justify-content: flex-start;
      padding-right: calc(50% + 30px);
    }

    .blog-list__timeline-item:nth-child(even) {
      justify-content: flex-end;
      padding-left: calc(50% + 30px);
    }

    .blog-list__timeline-item .blog-list__timeline-marker {
      top: 10px;
      left: 50%;
      transform: translateX(-50%);
    }

    .blog-list__timeline-item:nth-child(odd) .blog-list__card {
      margin-right: 30px;
      margin-left: 0;
      max-width: 400px;
    }

    .blog-list__timeline-item:nth-child(even) .blog-list__card {
      margin-left: 30px;
      margin-right: 0;
      max-width: 400px;
    }

    .blog-list__card-image {
      height: 225px;
    }
  }

  @media (min-width: 768px) and (max-width: 1024px) {
    .blog-list__hero-title {
      font-size: 2em;
    }

    .blog-list__hero-description {
      font-size: 1em;
    }

    .blog-list__section-title {
      font-size: 1.8em;
    }

    .blog-list__timeline-container {
      max-width: 700px;
    }
    .blog-list__card {
      max-width: 100%;
    }
  }

  @media (max-width: 767px) {
    .blog-list__hero {
      padding: var(--header-offset, 120px) 15px 40px;
    }

    .blog-list__hero-title {
      font-size: 1.8em;
    }

    .blog-list__hero-description {
      font-size: 0.9em;
    }

    .blog-list__section {
      padding: 30px 15px;
    }

    .blog-list__section-title {
      font-size: 1.6em;
      margin-bottom: 30px;
    }

    .blog-list__card-image {
      height: 180px;
    }

    .blog-list__card-title {
      font-size: 1.1em;
    }

    .blog-list__card-summary {
      font-size: 0.9em;
    }

    .blog-list__card-read-more {
      padding: 8px 15px;
      font-size: 0.85em;
    }
  }