.pool-chemistry-mobile-preview {
    max-width: 420px;
    margin: 0 auto;
    padding: 1rem 1rem 2rem;
    border-radius: 20px;
    box-shadow: 0 0 0 1px rgba(30, 30, 30, 0.08), 0 18px 48px rgba(15, 23, 42, 0.18);
    background: #fff;
}

.pool-chemistry-mobile:not(.pool-chemistry-mobile-preview) {
    padding: 1rem 1rem 2rem;
}

@media (min-width: 768px) {
    .pool-chemistry-mobile-preview {
        background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), #fff);
    }
}