#guide-content {
    --primary-blue: #0056b3;
    --secondary-blue: #e3f2fd;
    --accent-orange: #ff9800;
    --text-dark: #333333;
    --text-light: #555555;
    --white: #ffffff;
    --border-color: #dee2e6;

    font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #f9f9f9;

    border: 1px solid #eee;
    border-radius: 8px;
    margin-top: 20px;
    overflow: hidden;
  }

  #guide-content * {
    box-sizing: border-box;
  }

  /* Header */
  #guide-content header {
    background: linear-gradient(135deg, #8b0000, #ff9800);
    color: var(--white);
    padding: 35px 20px;
    text-align: center;
  }

  #guide-content header h1 {
    font-size: 28px;
    margin: 0 0 10px 0;
    font-weight: 700;
    line-height: 1.2;
  }

  #guide-content header p {
    font-size: 16px;
    color: #ffe0b2;
    font-weight: 500;
    margin: 0;
  }

  /* Navigation */
  #guide-content nav {
    background-color: #004494;
    padding: 10px 0;
    position: sticky;
    top: 0;
    z-index: 100;
  }

  #guide-content nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin: 0;
    padding: 0;
  }

  #guide-content nav a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    padding: 6px 12px;
    transition: all 0.3s;
    border-radius: 4px;
  }

  #guide-content nav a:hover {
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--accent-orange);
  }

  /* Content */
  #guide-content .inner-content {
    padding: 25px;
  }

  #guide-content section {
    background: var(--white);
    border-radius: 8px;
    padding: 25px 25px 30px 25px;
    margin-bottom: 25px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    border-top: 4px solid var(--accent-orange);
    scroll-margin-top: 70px;
  }

  #guide-content h2 {
    color: var(--primary-blue);
    font-size: 22px;
    font-weight: 700;
    margin-top: 0;
    margin-bottom: 15px;
    border-bottom: 2px solid var(--secondary-blue);
    padding-bottom: 8px;
  }

  #guide-content h3 {
    color: #003d80;
    font-size: 18px;
    margin-top: 20px;
    margin-bottom: 12px;
    font-weight: 600;
  }

  #guide-content p {
    margin-bottom: 12px;
    color: var(--text-light);
    font-family: Cambria, "Times New Roman", serif;
  }

  /* Tables */
  #guide-content .table-responsive {
    overflow-x: auto;
    margin: 15px 0;
    border-radius: 6px;
    border: 1px solid var(--border-color);
  }

  #guide-content table {
    width: 100%;
    border-collapse: collapse;
    font-size: 15px;
  }

  #guide-content th,
  #guide-content td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
    font-family: Cambria, "Times New Roman", serif;
  }

  #guide-content thead td,
  #guide-content th {
    background-color: var(--primary-blue);
    color: var(--white);
    font-weight: 600;
  }

  #guide-content tbody tr:nth-child(even) {
    background-color: #f8f9fa;
  }

  /* Highlight box */
  #guide-content .highlight-box {
    background-color: var(--secondary-blue);
    border-left: 5px solid var(--primary-blue);
    padding: 15px 18px;
    margin: 18px 0;
    border-radius: 4px;
  }

  /* Mobile */
  @media (max-width: 768px) {
    #guide-content nav ul {
      flex-direction: column;
      align-items: center;
      gap: 8px;
    }
    #guide-content header h1 {
      font-size: 24px;
    }
    #guide-content section {
      padding: 18px;
    }
  }