body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .logo { font-size: 2.5em; font-weight: bold; color: #0066cc; margin-bottom: 20px; }
        .nav { display: flex; justify-content: space-between; background: #f5f5f5; padding: 10px; margin-bottom: 30px; }
        .nav-item { padding: 5px 10px; }
        .mobile-nav-toggle { display: none; }
        h1 { color: #004d99; border-bottom: 2px solid #0066cc; padding-bottom: 10px; }
        h2 { color: #0066cc; margin-top: 30px; }
        h3 { color: #0077b6; }
        .download-btn, .login-btn { display: inline-block; padding: 12px 25px; background: #0066cc; color: white; text-decoration: none; border-radius: 5px; margin: 15px 0; }
        .image-container { text-align: center; margin: 25px 0; }
        .footer { margin-top: 50px; padding-top: 20px; border-top: 1px solid #ddd; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; }
            .mobile-nav-toggle { display: block; background: #0066cc; color: white; padding: 10px; text-align: center; cursor: pointer; }
            .nav-items { display: none; }
            .nav-items.active { display: block; }
            .nav-item { display: block; padding: 8px; }
        }