@media (max-width: 900px) {
  .nav-links,.nav-cta { display:none; }
  .hamburger { display:flex; }
  .mobile-menu.active,.mobile-menu.open { display:block; }
  .hero-grid,.about-grid,.contact-split,.inquiry-wrap { grid-template-columns:1fr; }
  .service-grid,.nirf-grid,.career-grid,.job-grid,.why-grid,.testi-grid,.faq-grid { grid-template-columns:1fr 1fr; }
  .footer-grid { grid-template-columns:1fr 1fr; }
}
@media (max-width: 640px) {
  .topbar .container,.topbar-links,.footer-bottom,.sticky-apply { flex-direction:column; align-items:flex-start; }
  .section { padding:56px 0; }
  .service-grid,.nirf-grid,.career-grid,.job-grid,.why-grid,.testi-grid,.faq-grid,.course-grid,.form-row,.mvv,.why-list,.hero-card-stack,.trust-row,.about-stats-row,.comparison-row,.footer-grid { grid-template-columns:1fr; }
  .form-box,.modal { padding:24px; }
  .float-group { bottom:86px; }
}