body { font-family: 'Segoe UI', Arial, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .mobile-nav { display: none; }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-nav { display: block; position: fixed; bottom: 0; width: 100%; background: #1a3e72; color: white; padding: 10px; text-align: center; }
            .toggle-btn { background: #ff6b35; border: none; padding: 8px 15px; color: white; cursor: pointer; }
        }
        .logo { font-size: 28px; font-weight: bold; color: #ff6b35; margin-bottom: 20px; }
        .nav-link { color: #1a3e72; margin: 0 10px; text-decoration: none; }
        h1 { color: #1a3e72; border-bottom: 2px solid #ff6b35; padding-bottom: 10px; }
        h2 { color: #2c5aa0; margin-top: 30px; }
        h3 { color: #4f7cb9; }
        .download-btn { background: #28a745; color: white; padding: 12px 25px; text-decoration: none; border-radius: 5px; display: inline-block; margin: 15px 0; }
        .login-btn { background: #007bff; color: white; padding: 12px 25px; text-decoration: none; border-radius: 5px; display: inline-block; margin: 15px 0; }
        .image-container { text-align: center; margin: 25px 0; }
        img { max-width: 100%; height: auto; }
        .tag { background: #e9ecef; padding: 5px 10px; margin: 5px; border-radius: 20px; display: inline-block; }
        .footer { margin-top: 50px; padding: 20px 0; border-top: 1px solid #ddd; }