.obs-card, .obs-proposta-card, .obs-subtema-vazio, .obs-verificacao-card {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.4s ease forwards;
}
@keyframes fadeInUp {
    to { opacity: 1; transform: translateY(0); }
}
.obs-card:nth-child(1) { animation-delay: 0.05s; }
.obs-card:nth-child(2) { animation-delay: 0.1s; }
.obs-card:nth-child(3) { animation-delay: 0.15s; }
.obs-card:nth-child(4) { animation-delay: 0.20s; }
.obs-card:nth-child(5) { animation-delay: 0.25s; }
.obs-card:nth-child(6) { animation-delay: 0.30s; }