* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  }

  .top-banner {
    background-color: #23939b;
    color: white;
    text-align: center;
    padding: 8px;
    font-size: 14px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .banner-content {
    position: relative;
    overflow: hidden;
    height: 20px;
    min-width: 200px;
    flex: 1;
    max-width: 800px;
  }

  .banner-message {
    position: absolute;
    width: 100%;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
  }

  .banner-message.active {
    opacity: 1;
    transform: translateY(0);
  }

  .banner-button {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 0 16px;
    opacity: 0.8;
    transition: opacity 0.3s;
  }

  .banner-button:hover {
    opacity: 1;
  }

  .banner-arrow {
    width: 20px;
    height: 20px;
  }

  .header {
    border-bottom: 1px solid #e5e5e5;
    background: white;
  }
  
  .header-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .logo {
    font-size: 24px;
    font-weight: bold;
    font-family: serif;
    cursor: pointer;
  }

  .search-container {
    flex: 1;
    max-width: 600px;
    margin: 0 32px;
    position: relative;
  }

  .search-input {
    width: 100%;
    padding: 10px 40px 10px 16px;
    border: 1px solid #ccc;
    border-radius: 20px;
    font-size: 14px;
  }

  .search-icon {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: #666;
  }

  .header-icons {
    display: flex;
    gap: 24px;
  }

  .icon {
    width: 24px;
    height: 24px;
    cursor: pointer;
  }

  /* Navigation Menu */
  .nav-menu {
    display: flex;
    justify-content: center; 
    align-items: center; 
    gap: 2rem;
    padding: 1rem 2rem;
    background: #f8f8f8;
    border-bottom: 1px solid #e0e0e0;
    position: relative;
}
  
  .nav-item {
    position: relative;
    cursor: pointer;
  }
  
  .nav-link {
    color: #333;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 0;
  }
  
  /* Dropdown Styling */
  .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    min-width: 240px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 100;
    border-radius: 4px;
    border: 1px solid #e0e0e0;
  }
  
  .nav-item.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  
  .dropdown-section {
    padding: 1rem;
  }
  
  .dropdown-section h3 {
    color: #333;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #e0e0e0;
  }
  
  .dropdown-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .dropdown-item {
    color: #666;
    text-decoration: none;
    font-size: 0.85rem;
    padding: 0.4rem 0;
    transition: color 0.2s ease;
  }
  
  .dropdown-item:hover {
    color: #1a75ff;
  }
  
  .nav-link:hover {
    color: #1a75ff;
  }
  
  .nav-item.active .nav-link {
    color: #1a75ff;
  }
  
  @media (max-width: 768px) {
    .nav-menu {
      flex-direction: column;
      gap: 0;
    }
  
    .nav-item {
      width: 100%;
      padding: 0.5rem 0;
    }
  
    .dropdown-menu {
      position: static;
      box-shadow: none;
      border: none;
      opacity: 1;
      visibility: visible;
      transform: none;
      display: none;
    }
  
    .nav-item.has-dropdown.active .dropdown-menu {
      display: block;
    }
  
    .dropdown-section {
      padding: 0.5rem 1rem;
    }
  }

  .menu-button {
    background-color: #23939b; 
    color: white; 
    font-size: 16px; 
    padding: 10px 20px; 
    border: none; 
    border-radius: 5px; 
    cursor: pointer; 
    transition: background-color 0.3s ease, transform 0.2s ease;
    text-align: left;
  }

  .menu-button:hover {
    background-color: #1c7c7a; 
    transform: translateY(-1px); 
  }

  .menu-button:active {
    background-color: #1a7475; 
    transform: translateY(0); 
  }