body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #FF5722; text-align: center; }
        h2 { color: #00796B; border-bottom: 2px solid #FFC107; padding-bottom: 5px; }
        h3 { color: #4CAF50; }
        .nav { background: #004D40; padding: 10px; display: flex; justify-content: space-between; align-items: center; }
        .nav a { color: white; text-decoration: none; margin: 0 10px; }
        .mobile-toggle { display: none; color: white; cursor: pointer; }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .mobile-toggle { display: block; }
            .nav.active .nav-links { display: block; }
        }
        .download-btn { background: #FF5722; color: white; padding: 10px 20px; border-radius: 5px; text-decoration: none; display: inline-block; margin: 10px 0; }
        .login-btn { background: #4CAF50; color: white; padding: 10px 20px; border-radius: 5px; text-decoration: none; display: inline-block; margin: 10px 0; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .tags { margin: 20px 0; }
        .tag { background: #E0E0E0; padding: 5px 10px; border-radius: 3px; margin: 5px; display: inline-block; }
        footer { background: #004D40; color: white; padding: 20px; text-align: center; margin-top: 30px; }