/* ????????? ?????? */
      .article-container {
        margin: 0 auto;
        padding: 20px;
        font-family: Arial, sans-serif;
        line-height: 1.6;
        color: #333;
      }

      /* ?????????? */
      .article-toc {
        background: #f8f9fa;
        border: 1px solid #dee2e6;
        padding: 20px;
        margin: 20px 0;
        border-radius: 8px;
      }

      .article-toc h3 {
        margin-top: 0;
        color: #495057;
      }

      .article-toc ul {
        list-style-type: none;
        padding-left: 0;
      }

      .article-toc li {
        margin: 8px 0;
      }

      .article-toc a {
        color: #007bff;
        text-decoration: none;
        font-weight: 500;
      }

      .article-toc a:hover {
        text-decoration: underline;
      }

      /* ?????????????? ????? */
      .article-highlight-box {
        background: #fff3cd;
        border: 1px solid #ffeaa7;
        padding: 15px;
        margin: 20px 0;
        border-radius: 6px;
        border-left: 4px solid #ffc107;
      }

      .article-warning-box {
        background: #f8d7da;
        border: 1px solid #f5c6cb;
        padding: 15px;
        margin: 20px 0;
        border-radius: 6px;
        border-left: 4px solid #dc3545;
      }

      .article-info-box {
        background: #d1ecf1;
        border: 1px solid #bee5eb;
        padding: 15px;
        margin: 20px 0;
        border-radius: 6px;
        border-left: 4px solid #17a2b8;
      }

      /* ??????? */
      .article-table {
        width: 100%;
        border-collapse: collapse;
        margin: 25px 0;
        font-size: 14px;
        background: #fff;
        border: 1px solid #dee2e6;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
      }

      .article-table th,
      .article-table td {
        padding: 12px 15px;
        text-align: center;
        border-bottom: 1px solid #dee2e6;
      }

      .article-table th {
        background: #495057;
        color: white;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        font-size: 12px;
      }

      .article-main-table th {
        background: #007bff;
      }

      .article-main-table tr:nth-child(even) {
        background-color: #f8f9ff;
      }

      .article-main-table tr:hover {
        background-color: #e3f2fd;
        transition: background-color 0.3s ease;
      }

      .article-secondary-table th {
        background: #28a745;
      }

      .article-secondary-table tr:nth-child(even) {
        background-color: #f8fff8;
      }

      .article-secondary-table tr:hover {
        background-color: #e8f5e8;
        transition: background-color 0.3s ease;
      }

      .article-highlight-row {
        background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 50%, #fff3e0 100%) !important;
        border-left: 4px solid #ff9800;
        font-weight: 600;
      }

      .article-highlight-row:hover {
        background: linear-gradient(135deg, #ffecb3 0%, #ffd54f 50%, #ffecb3 100%) !important;
      }

      .article-table td:first-child {
        font-weight: 600;
        color: #495057;
      }

      .article-table-caption {
        background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
        padding: 15px;
        margin: 20px 0 0 0;
        border-radius: 8px 8px 0 0;
        font-weight: 600;
        color: #495057;
        text-align: center;
        border-bottom: 3px solid #007bff;
      }

      /* ??????? */
      .article-formula {
        background: #f8f9fa;
        border-left: 4px solid #007bff;
        padding: 15px;
        margin: 15px 0;
        font-family: 'Courier New', monospace;
        border-radius: 0 6px 6px 0;
      }

      /* CTA ????? */
      .article-cta-box {
        background: #d4edda;
        border: 1px solid #c3e6cb;
        padding: 20px;
        margin: 30px 0;
        text-align: center;
        border-radius: 8px;
        border-left: 4px solid #28a745;
      }

      /* FAQ */
      .article-faq-item {
        margin: 20px 0;
        border-bottom: 1px solid #dee2e6;
        padding-bottom: 15px;
      }

      .article-faq-question {
        font-weight: bold;
        color: #495057;
        margin-bottom: 10px;
      }

      /* ????????? */
      .article-container h1 {
        color: #212529;
        text-align: center;
        margin-bottom: 30px;
        font-size: 2.2em;
      }

      .article-container h2 {
        color: #495057;
        border-bottom: 2px solid #007bff;
        padding-bottom: 8px;
        margin-top: 40px;
        margin-bottom: 20px;
      }

      .article-container h3 {
        color: #495057;
        margin-top: 30px;
        margin-bottom: 15px;
      }

      /* ?????????????? ????? */
      .article-author-info {
        font-style: italic;
        color: #6c757d;
        text-align: center;
        margin-bottom: 30px;
      }

      .article-last-updated {
        font-size: 12px;
        color: #6c757d;
        text-align: right;
        margin-bottom: 20px;
      }

      /* ???????????? */
      @media (max-width: 768px) {
        .article-container {
          padding: 15px;
        }
        
        .article-table {
          font-size: 12px;
        }
        
        .article-table th,
        .article-table td {
          padding: 8px 10px;
        }
        
        .article-container h1 {
          font-size: 1.8em;
        }
      }

      /* ????? ?????? ??? ????????? ?????????? */
      .article-container * {
        box-sizing: border-box;
      }

      .article-container p {
        margin-bottom: 16px;
        text-align: justify;
      }

      .article-container ul,
      .article-container ol {
        margin-bottom: 16px;
        padding-left: 20px;
      }

      .article-container li {
        margin-bottom: 8px;
      }
      .dyuralight-page {
    font-family: 'Roboto', sans-serif;
    color: #333;
}
.button-download {
    width: 450px;
    height: 90px;
    border-radius: 14px;
    background-color: #FF7A00;
    color: white;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 12px rgba(255, 122, 0, 0.3);
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    text-decoration: none;
    margin-bottom: 2rem;
}
.button-download:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(255, 122, 0, 0.4);
    color: white;
    text-decoration: none;
}
.button-download:hover .button-text {
    color: white;
    opacity: 1;
}
.button-download:hover .button-desc {
    color: white;
    opacity: 0.8;
}
.pdf-icon {
    background-color: #fff;
    width: 48px;
    height: 48px;
    border-radius: 8px;
    color: #FF7A00;
    margin-right: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.button-text {
    font-size: 20px;
    font-weight: 600;
}
.button-desc {
    font-size: 15px;
    opacity: 0.8;
}
.dyuralight-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2.5rem;
}
.button-content {
    text-align: left;
}
.download-icon {
    margin-left: auto;
}