.payment-card { max-width: 600px; margin: 40px auto; padding: 30px; background: #fff; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.1); text-align: center; }
    .payment-summary { background: #f4f7fb; padding: 20px; border-radius: 8px; margin-bottom: 30px; border-left: 5px solid #6BAF46; text-align: left; }
    .payment-summary h3 { margin-top: 0; color: #333; font-size: 1.1rem; }
    .price-tag { font-size: 2rem; font-weight: 800; color: #6BAF46; margin: 20px 0; }
    #paypal-button-container { margin-top: 20px; min-height: 150px; }