body {
      font-family: 'B Nazanin', Tahoma, sans-serif;
      line-height: 1.8;
      max-width: 900px;
      margin: 2rem auto;
      padding: 0 20px;
      color: #333;
      text-align: justify;
    }

    .header {
      text-align: center;
      border-bottom: 2px solid #1a5fb4;
      padding-bottom: 1rem;
      margin-bottom: 2rem;
    }

    h1 {
      color: #1a5fb4;
      font-size: 2.2rem;
      margin-bottom: 0.5rem;
    }

    .highlight {
      background-color: #f0f7ff;
      padding: 2rem;
      border-radius: 8px;
      margin: 2rem 0;
      border-right: 4px solid #1a5fb4;
    }

    .cta-button {
      display: block;
      width: 300px;
      margin: 2rem auto;
      padding: 15px;
      background: #1a5fb4;
      color: white;
      text-align: center;
      text-decoration: none;
      border-radius: 5px;
      font-weight: bold;
      font-size: 1.2rem;
      transition: background 0.3s;
    }

    .cta-button:hover {
      background: #0d4a9e;
    }

    .h255 {
      line-height: 250%;
    }

    .fe {
      color: #A0A0A0;
      font-family: Cambria, Cochin, Georgia, Times, "Times New Roman", serif
    }

    .ft {
      font-family: Cambria, Cochin, Georgia, Times, "Times New Roman", serif;
    }

    .fsz106 {
      font-size: 106%;
    }

.fsz110 {
      font-size: 110%;
    }

    .sections {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 0px;
      margin: 0rem 0;
    }

    .section-box {
      background: white;
      border: 1px solid #e0e0e0;
      border-radius: 8px;
      padding: 1.5rem;
      box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
    }

    .section-box h3 {
      color: #1a5fb4;
      border-bottom: 2px solid #f0f7ff;
      padding-bottom: 0.0rem;
    }

    footer {
      text-align: center;
      margin-top: 0rem;
      color: #666;
      font-size: 0.9rem;
    }

    /* Vocabulary Buttons Container */
    .vocab-buttons {
      display: flex;
      justify-content: center;
      gap: 15px;
      margin: 0.75rem 0;
      flex-wrap: wrap;
    }

    .vocab-button {
      display: inline-block;
      padding: 12px 20px;
      background-color: #2e7d32;
      color: white;
      text-decoration: none;
      border-radius: 5px;
      font-weight: bold;
      transition: all 0.3s ease;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
      text-align: center;
      min-width: 140px;
    }

    .vocab-button:hover {
      background-color: #1b5e20;
      transform: translateY(-2px);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    }

    .vocab-button:nth-child(1) {
      background-color: #1a5fb4;
    }

    .vocab-button:nth-child(1):hover {
      background-color: #0d4a9e;
    }

    .vocab-button:nth-child(2) {
      background-color: #5d4037;
    }

    .vocab-button:nth-child(2):hover {
      background-color: #4e342e;
    }

    .vocab-button:nth-child(3) {
      background-color: #2e7d32;
    }

    .vocab-button:nth-child(3):hover {
      background-color: #1b5e20;
    }

    /* Responsive adjustments */
    @media (max-width: 600px) {
      .vocab-buttons {
        flex-direction: column;
        align-items: center;
      }

      .vocab-button {
        width: 80%;
        max-width: 250px;
      }
    }