body { font-family: 'Helvetica Neue', Arial, sans-serif; background-color: #f4f4f4; margin: 0; padding: 20px; }
.container { max-width: 800px; margin: 0 auto; background: white; padding: 40px; border-radius: 8px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); }
h1 { color: #d32f2f; text-align: center; }
.product-box { text-align: center; }
.cta-button { display: inline-block; background: #28a745; color: white; padding: 15px 30px; text-decoration: none; font-weight: bold; border-radius: 5px; font-size: 1.2rem; margin-top: 20px; }
.cta-button:hover { background: #218838; }