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: #0066cc; text-shadow: 2px 2px 4px rgba(0,0,0,0.1); margin: 20px 0; }
        nav { background: #f8f8f8; padding: 15px; border-radius: 8px; margin-bottom: 30px; }
        nav ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; }
        nav li { margin: 0 15px; }
        nav a { text-decoration: none; color: #0066cc; font-weight: 500; }
        .mobile-nav-toggle { display: none; cursor: pointer; }
        h1 { color: #003366; border-bottom: 2px solid #0066cc; padding-bottom: 10px; }
        h2 { color: #004d99; margin-top: 35px; }
        h3 { color: #0066cc; margin-top: 25px; }
        .download-btn, .login-btn { display: inline-block; padding: 12px 25px; background: #0066cc; color: white; border-radius: 5px; text-decoration: none; margin: 15px 0; font-weight: bold; }
        .image-container { text-align: center; margin: 30px 0; }
        .image-container img { max-width: 100%; height: auto; border-radius: 8px; }
        .tag-container { margin: 20px 0; }
        .tag { background: #e0e0e0; padding: 5px 10px; border-radius: 15px; margin: 5px; display: inline-block; }
        footer { margin-top: 50px; padding: 20px; background: #f0f0f0; border-radius: 8px; }
        @media (max-width: 768px) {
            .mobile-nav-toggle { display: block; text-align: center; margin: 15px 0; }
            nav ul { display: none; }
            nav.active ul { display: flex; flex-direction: column; align-items: center; }
            body { padding: 10px; }
        }