body {
                font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
                line-height: 1.6;
                color: #333;
                max-width: 800px;
                margin: 0 auto;
                padding: 20px;
                background-color: #f9f9f9;
            }
            .promo-container {
                background: #ffffff;
                padding: 40px;
                border-radius: 8px;
                box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
            }
            h1 {
                color: #0056b3;
                font-size: 2.2em;
                margin-bottom: 20px;
                border-bottom: 2px solid #f0f0f0;
                padding-bottom: 10px;
            }
            h2 {
                color: #17a2b8;
                font-size: 1.5em;
                margin-top: 30px;
                margin-bottom: 15px;
            }
            p {
                font-size: 1.1em;
                margin-bottom: 15px;
            }
            .intro-text {
                font-size: 1.2em;
                font-weight: 500;
                color: #444;
            }
            ul,
            ol {
                padding-left: 20px;
                margin-bottom: 25px;
            }
            li {
                margin-bottom: 12px;
                font-size: 1.05em;
            }
            strong {
                color: #111;
            }