.section-fadein {
    opacity: 0;
    transform: translateY(60px) scale(0.98);
    filter: blur(6px);
    transition:
        opacity 0.9s cubic-bezier(.4,0,.2,1),
        transform 0.9s cubic-bezier(.4,0,.2,1),
        filter 0.9s cubic-bezier(.4,0,.2,1);
    will-change: opacity, transform, filter;
}
.section-fadein.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
}