body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #FF6600; text-align: center; margin-bottom: 10px; }
        h2 { color: #0066CC; border-bottom: 2px solid #FF6600; padding-bottom: 5px; margin-top: 30px; }
        h3 { color: #339966; }
        a { color: #0066CC; text-decoration: none; }
        .logo { font-size: 28px; font-weight: bold; color: #FF6600; text-align: center; margin: 20px 0; }
        .nav { display: flex; justify-content: space-around; background: #333; padding: 10px; margin-bottom: 20px; }
        .nav a { color: white; }
        .mobile-nav-btn { display: none; background: #FF6600; color: white; padding: 10px; border: none; cursor: pointer; }
        .download-btn, .login-btn { display: inline-block; padding: 12px 25px; background: #FF6600; color: white; border-radius: 5px; margin: 15px 0; text-align: center; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .footer { background: #333; color: white; padding: 20px; text-align: center; margin-top: 30px; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; display: none; }
            .mobile-nav-btn { display: block; }
            .nav.active { display: flex; }
        }