body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, 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: #FF9900; text-shadow: 2px 2px 4px rgba(0,0,0,0.2); margin-bottom: 20px; }
        nav { background: #2c3e50; padding: 10px; margin-bottom: 20px; }
        nav ul { list-style: none; display: flex; justify-content: space-around; }
        nav li a { color: white; text-decoration: none; }
        .mobile-nav-toggle { display: none; background: #FF9900; color: white; padding: 10px; border: none; cursor: pointer; }
        h1 { color: #FF9900; border-bottom: 2px solid #FF9900; padding-bottom: 10px; }
        h2 { color: #3498db; margin-top: 30px; }
        h3 { color: #2ecc71; }
        .download-btn, .login-btn { background: #FF9900; color: white; padding: 12px 25px; text-decoration: none; border-radius: 5px; margin: 15px 0; display: inline-block; }
        .image-container { text-align: center; margin: 20px 0; }
        img { max-width: 100%; height: auto; border-radius: 8px; }
        .alt-text { font-size: 0.8em; color: #777; }
        footer { margin-top: 40px; padding-top: 20px; border-top: 1px solid #eee; }
        @media (max-width: 768px) {
            nav ul { flex-direction: column; display: none; }
            .mobile-nav-toggle { display: block; }
            nav.active ul { display: flex; }
            .logo { font-size: 2em; }
        }