body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            background-color: #f5f5f5;
        }
        header {
            background-color: #1a73e8;
            color: white;
            padding: 20px;
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .logo {
            font-size: 28px;
            font-weight: bold;
            display: flex;
            align-items: center;
        }
        .logo span {
            color: #ffeb3b;
        }
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .mobile-menu {
            display: none;
            cursor: pointer;
        }
        .content {
            background-color: white;
            padding: 30px;
            margin-top: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        h1 {
            color: #1a73e8;
            border-bottom: 2px solid #ffeb3b;
            padding-bottom: 10px;
        }
        h2 {
            color: #0d47a1;
            margin-top: 30px;
        }
        h3 {
            color: #1565c0;
        }
        .download-btn, .login-btn {
            display: inline-block;
            background-color: #4caf50;
            color: white;
            padding: 12px 24px;
            margin: 10px 0;
            border-radius: 4px;
            text-decoration: none;
            font-weight: bold;
            transition: background-color 0.3s;
        }
        .download-btn:hover, .login-btn:hover {
            background-color: #388e3c;
        }
        .image-container {
            text-align: center;
            margin: 20px 0;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 4px;
        }
        .strategy-box {
            background-color: #e8f5e9;
            padding: 15px;
            border-left: 4px solid #4caf50;
            margin: 15px 0;
        }
        footer {
            background-color: #333;
            color: white;
            padding: 20px;
            margin-top: 30px;
            text-align: center;
        }
        .tag {
            display: inline-block;
            background-color: #666;
            color: white;
            padding: 5px 10px;
            margin: 5px;
            border-radius: 20px;
            text-decoration: none;
        }
        @media (max-width: 768px) {
            .mobile-menu {
                display: block;
            }
            nav ul {
                display: none;
            }
            .content {
                padding: 15px;
            }
        }