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: 2.2em; font-weight: bold; color: #0066cc; text-align: center; margin: 20px 0; }
        nav { background-color: #f8f9fa; padding: 15px; border-radius: 8px; margin-bottom: 25px; }
        nav ul { list-style-type: none; padding: 0; display: flex; justify-content: center; flex-wrap: wrap; }
        nav li { margin: 0 15px; }
        nav a { text-decoration: none; color: #0066cc; font-weight: 500; }
        .mobile-menu-btn { display: none; background: #0066cc; color: white; border: none; padding: 10px 15px; border-radius: 5px; cursor: pointer; }
        h1 { color: #004499; border-bottom: 2px solid #0066cc; padding-bottom: 10px; }
        h2 { color: #0055aa; margin-top: 30px; }
        h3 { color: #0066bb; }
        .download-btn, .login-btn { display: inline-block; background: #00aa44; color: white; padding: 12px 25px; margin: 15px 0; border-radius: 6px; text-decoration: none; font-weight: bold; }
        .login-btn { background: #0077bb; }
        .image-container { text-align: center; margin: 25px 0; }
        img { max-width: 100%; height: auto; border-radius: 8px; }
        footer { background: #f0f0f0; padding: 20px; margin-top: 40px; border-radius: 8px; }
        .tags { margin: 20px 0; }
        .tag { background: #e0e0e0; padding: 5px 10px; border-radius: 15px; margin: 5px; display: inline-block; }
        @media (max-width: 768px) {
            nav ul { flex-direction: column; align-items: center; }
            nav li { margin: 5px 0; }
            .mobile-menu-btn { display: block; margin: 0 auto 20px; }
            .desktop-nav { display: none; }
            .show-nav { display: flex; }
        }