body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #FF4500; border-bottom: 3px solid #FFA500; padding-bottom: 10px; }
        h2 { color: #FF8C00; margin-top: 25px; }
        h3 { color: #FFA500; margin-top: 20px; }
        .nav { background: #333; padding: 10px; display: flex; justify-content: space-between; align-items: center; }
        .nav a { color: white; text-decoration: none; margin: 0 10px; }
        .mobile-nav-btn { display: none; background: #FF4500; color: white; border: none; padding: 8px 15px; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .download-btn { background: #4CAF50; color: white; padding: 12px 25px; text-decoration: none; display: inline-block; margin: 15px 0; }
        .login-btn { background: #2196F3; color: white; padding: 12px 25px; text-decoration: none; display: inline-block; margin: 15px 10px; }
        .footer { background: #333; color: white; padding: 20px; text-align: center; margin-top: 30px; }
        .tags { margin: 20px 0; }
        .tag { background: #FFA500; color: white; padding: 5px 10px; margin: 5px; display: inline-block; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; }
            .mobile-nav-btn { display: block; }
            .nav-links { display: none; }
            .nav-links.active { display: flex; flex-direction: column; }
        }