body {
      margin: 0;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background: #fffef5;
      color: #333;
    }
    .container {
        margin-top: 100px;
      max-width: 1200px;
      margin: 0 auto;
      padding: 100px 20px;
      text-align: center;
    }
    h1 {
      font-size: 2rem;
      font-weight: bold;
      margin-bottom: 10px;
    }
    p.description {
      max-width: 700px;
      margin: 0 auto 40px;
      color: #555;
    }
    .grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 20px;
    }
    .card {
      background: #fff;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 0 10px rgba(0,0,0,0.1);
      display: flex;
      flex-direction: column;
    }
    .card img {
      width: 100%;
      height: 160px;
      object-fit: cover;
    }
    .badge {
      position: absolute;
      top: 10px;
      left: 10px;
      background-color: #e5f7ed;
      color: #2b855d;
      font-size: 12px;
      padding: 5px 10px;
      border-radius: 999px;
      display: flex;
      align-items: center;
      gap: 5px;
      font-weight: bold;
    }
    .badge.intermediate {
      background-color: #fff3d9;
      color: #b7791f;
    }
    .badge.advanced {
      background-color: #ffe5e5;
      color: #c53030;
    }
    .card-content {
      padding: 20px;
      text-align: left;
    }
    .card-content h2 {
      font-size: 16px;
      margin: 0 0 10px;
    }
    .card-content .meta {
      font-size: 14px;
      color: #777;
      margin-bottom: 10px;
    }
    .card-content ul {
      list-style: none;
      padding: 0;
      margin: 0;
      font-size: 14px;
      color: #555;
    }
    .card-content ul li {
      margin-bottom: 5px;
    }