:root {
      --primary-dark: #003087;
      --primary-blue: #0055a5;
      --accent-light: #80b3ff;
      --bg-light: #f8f9fa;
      --bg-gradient: #e9ecef;
      --text-dark: #4a4a4a;
      --white: #fff;
    }
    body {
      font-family: 'Roboto', sans-serif;
      background-color: var(--bg-light);
      overflow-x: hidden;
      line-height: 1.7;
    }
    h1, h2, h3, h4, h5, h6 {
      font-family: 'Montserrat', sans-serif;
    }
    .navbar {
      background-color: var(--white);
      border-bottom: 3px solid var(--primary-blue);
      padding: 1.5rem 0;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }
    .navbar-brand img {
      height: 50px;
    }
    .nav-link {
      font-size: 1.1rem;
      font-weight: 500;
      color: var(--primary-dark);
      transition: color 0.3s;
    }
    .nav-link:hover {
      color: var(--primary-blue);
    }
    .dropdown-menu {
      border: none;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }
    .dropdown-item {
      font-weight: 400;
      color: var(--primary-dark);
    }
    .dropdown-item:hover {
      background-color: var(--bg-light);
      color: var(--primary-blue);
    }
    .dropdown-item.active {
      background-color: var(--primary-blue);
      color: var(--white);
    }
    .banner-section {
      position: relative;
      height: 450px;
      background-size: cover;
      background-position: center;
      background-attachment: fixed;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      color: var(--white);
      margin-bottom: 3rem;
    }
    .banner-section::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.7));
      z-index: 1;
    }
    .banner-content {
      position: relative;
      z-index: 2;
      padding: 2rem;
      max-width: 900px;
    }
    .banner-content h1 {
      font-size: clamp(2.8rem, 6vw, 4.5rem);
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 2px;
      margin-bottom: 1rem;
    }
    .banner-content .typed-text {
      font-size: clamp(1.2rem, 2.5vw, 1.6rem);
      font-weight: 300;
      min-height: 2.5rem;
      display: block;
      margin-bottom: 2rem;
    }
    .banner-content .btn-primary {
      font-size: 1.2rem;
      padding: 0.8rem 2.5rem;
      border-radius: 50px;
      background: linear-gradient(90deg, var(--accent-light), var(--primary-blue));
      border: none;
      transition: all 0.3s ease;
    }
    .banner-content .btn-primary:hover {
      transform: scale(1.05);
      box-shadow: 0 6px 20px rgba(128, 179, 255, 0.6);
    }
    .services-section {
      padding: 5rem 0;
      background-color: var(--white);
    }
    .services-section h1 {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--primary-dark);
      margin-bottom: 1.5rem;
      text-align: center;
    }
    .services-section p.lead {
      font-size: 1.3rem;
      color: var(--text-dark);
      margin-bottom: 3rem;
      text-align: center;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }
    .service-card {
      background-color: var(--bg-light);
      padding: 2rem;
      border-radius: 10px;
      margin-bottom: 2rem;
      transition: all 0.3s ease;
      min-height: 300px;
      display: flex;
      flex-direction: column;
      border: 1px solid rgba(0, 0, 0, 0.1);
    }
    .service-card:hover {
      transform: translateY(-10px);
      box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
    }
    .service-card i {
      font-size: 2.5rem;
      color: var(--primary-blue);
      margin-bottom: 1rem;
    }
    .service-card h5 {
      font-size: 1.5rem;
      font-weight: 600;
      color: var(--primary-dark);
      margin-bottom: 1rem;
    }
    .service-card p {
      font-size: 1rem;
      color: var(--text-dark);
      flex-grow: 1;
    }
    .cta-section {
      background: linear-gradient(135deg, var(--primary-blue), var(--accent-light));
      color: var(--white);
      padding: 4rem 0;
      border-radius: 15px;
      text-align: center;
      margin-top: 4rem;
      margin-bottom: 4rem;
    }
    .cta-section h5 {
      font-size: 2rem;
      font-weight: 600;
      margin-bottom: 1.5rem;
    }
    .cta-section p {
      font-size: 1.2rem;
      margin-bottom: 2rem;
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
    }
    .cta-section .btn {
      font-size: 1.1rem;
      padding: 0.8rem 2.5rem;
      border-radius: 50px;
      margin: 0.5rem;
    }
    .cta-section .btn-outline-light:hover {
      background: var(--white);
      color: var(--primary-dark);
    }
    .back-to-top {
      position: fixed;
      bottom: 30px;
      right: 30px;
      background-color: var(--primary-blue);
      color: var(--white);
      width: 50px;
      height: 50px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      opacity: 0;
      transition: all 0.3s ease;
      z-index: 9999;
    }
    .back-to-top.show {
      opacity: 1;
    }
    .back-to-top:hover {
      background-color: var(--accent-light);
      transform: translateY(-5px);
    }
    footer {
      background-color: var(--primary-dark);
      color: var(--white);
      padding: 3rem 0;
    }
    .footer-links a {
      color: #f8f9fa;
      text-decoration: none;
      margin: 0 1rem;
      font-size: 1rem;
      transition: color 0.3s ease;
    }
    .footer-links a:hover {
      color: var(--accent-light);
    }
    .social-icons a {
      color: var(--white);
      font-size: 1.2rem;
      margin: 0 0.5rem;
      transition: color 0.3s ease;
    }
    .social-icons a:hover {
      color: var(--accent-light);
    }
    @media (max-width: 768px) {
      .banner-section {
        height: 350px;
        background-attachment: scroll;
      }
      .banner-content h1 {
        font-size: clamp(2rem, 5vw, 3rem);
      }
      .services-section {
        padding: 3rem 0;
      }
      .services-section h1 {
        font-size: 2.2rem;
      }
      .service-card {
        min-height: 280px;
      }
      .service-card h5 {
        font-size: 1.3rem;
      }
    }