body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
            background-color: #f5f5f5;
        }
        header {
            background-color: #2c3e50;
            color: white;
            padding: 20px;
            border-radius: 5px;
            margin-bottom: 30px;
        }
        .logo {
            font-size: 28px;
            font-weight: bold;
            color: #e74c3c;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
        }
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .mobile-menu {
            display: none;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .mobile-menu {
                display: block;
            }
        }
        h1 {
            color: #e74c3c;
            border-bottom: 2px solid #2c3e50;
            padding-bottom: 10px;
        }
        h2 {
            color: #2c3e50;
            margin-top: 30px;
        }
        h3 {
            color: #3498db;
        }
        .download-btn {
            display: inline-block;
            background-color: #27ae60;
            color: white;
            padding: 12px 25px;
            margin: 15px 0;
            border-radius: 5px;
            text-decoration: none;
            font-weight: bold;
        }
        .login-btn {
            display: inline-block;
            background-color: #3498db;
            color: white;
            padding: 12px 25px;
            margin: 15px 0;
            border-radius: 5px;
            text-decoration: none;
            font-weight: bold;
        }
        .highlight {
            background-color: #fffde7;
            padding: 10px;
            border-left: 4px solid #ffc107;
        }
        img {
            max-width: 100%;
            height: auto;
            margin: 20px 0;
            border-radius: 5px;
        }
        footer {
            margin-top: 50px;
            padding: 20px;
            background-color: #2c3e50;
            color: white;
            border-radius: 5px;
        }
        .tag {
            display: inline-block;
            background-color: #7f8c8d;
            color: white;
            padding: 5px 10px;
            margin: 5px;
            border-radius: 3px;
            text-decoration: none;
        }