body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .mobile-nav { display: none; background: #1a3b5d; color: white; padding: 10px; text-align: center; cursor: pointer; }
        nav { background: #1a3b5d; padding: 15px; margin-bottom: 30px; }
        nav ul { list-style: none; padding: 0; display: flex; justify-content: space-around; }
        nav a { color: white; text-decoration: none; font-weight: bold; }
        h1 { color: #e74c3c; border-bottom: 3px solid #f1c40f; padding-bottom: 10px; }
        h2 { color: #2980b9; margin-top: 30px; }
        h3 { color: #27ae60; }
        .download-btn { background: #2ecc71; color: white; padding: 12px 25px; border-radius: 5px; display: inline-block; margin: 15px 0; text-decoration: none; }
        .login-btn { background: #3498db; color: white; padding: 12px 25px; border-radius: 5px; display: inline-block; margin: 15px 0; text-decoration: none; }
        .image-container { text-align: center; margin: 25px 0; }
        img { max-width: 100%; height: auto; border-radius: 8px; }
        .tag-container { margin: 20px 0; }
        .tag { background: #95a5a6; color: white; padding: 5px 10px; border-radius: 3px; margin: 3px; display: inline-block; }
        footer { margin-top: 50px; padding: 20px; background: #2c3e50; color: white; text-align: center; }
        @media (max-width: 768px) {
            nav ul { flex-direction: column; }
            .mobile-nav { display: block; }
            nav { display: none; }
            .show-nav { display: block; }
        }