body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .logo { font-size: 28px; font-weight: bold; color: #FF4500; text-align: center; margin: 20px 0; }
        nav { background: #FF4500; color: white; padding: 10px; text-align: center; }
        nav a { color: white; margin: 0 15px; text-decoration: none; }
        .mobile-nav-toggle { display: none; background: #333; color: white; padding: 10px; position: absolute; top: 10px; right: 10px; }
        h1 { color: #FF4500; font-size: 2.5em; }
        h2 { color: #E67E22; border-bottom: 2px solid #FF4500; padding-bottom: 5px; }
        h3 { color: #3498DB; }
        .download-btn, .login-btn { background: #2ECC71; color: white; padding: 12px 25px; margin: 20px 0; display: inline-block; text-decoration: none; border-radius: 5px; }
        .download-btn:hover, .login-btn:hover { background: #27AE60; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        footer { background: #333; color: white; padding: 20px; text-align: center; margin-top: 40px; }
        @media (max-width: 768px) {
            .mobile-nav-toggle { display: block; }
            nav { display: none; }
            nav.active { display: block; }
            body { padding: 10px; }
        }