/* ── Fade-in animations ── */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Staggered animation delays ── */
.service-card:nth-child(1) { transition-delay: 0.05s; }
.service-card:nth-child(2) { transition-delay: 0.1s; }
.service-card:nth-child(3) { transition-delay: 0.15s; }
.service-card:nth-child(4) { transition-delay: 0.2s; }
.service-card:nth-child(5) { transition-delay: 0.25s; }
.service-card:nth-child(6) { transition-delay: 0.3s; }

.why-item:nth-child(1) { transition-delay: 0.05s; }
.why-item:nth-child(2) { transition-delay: 0.1s; }
.why-item:nth-child(3) { transition-delay: 0.15s; }
.why-item:nth-child(4) { transition-delay: 0.2s; }

.about-feature:nth-child(1) { transition-delay: 0.05s; }
.about-feature:nth-child(2) { transition-delay: 0.1s; }
.about-feature:nth-child(3) { transition-delay: 0.15s; }
.about-feature:nth-child(4) { transition-delay: 0.2s; }

.contact-detail:nth-child(1) { transition-delay: 0.05s; }
.contact-detail:nth-child(2) { transition-delay: 0.1s; }
.contact-detail:nth-child(3) { transition-delay: 0.15s; }