/* ============================================================
   Responsive breakpoints
   ============================================================ */
@media (max-width: 980px) {
  .dna-grid       { grid-template-columns: repeat(2, 1fr); }
  .service-inner  { grid-template-columns: 1fr; gap: 28px; padding: 28px; }
  .contact-wrap   { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px;
    gap: 0;
    border-top: 1px solid var(--hair);
    box-shadow: var(--shadow-md);
  }
  .nav-links.open a {
    color: var(--ink);
    padding: 14px 0;
    border-bottom: 1px solid var(--hair);
  }
  .nav-links.open .lang { margin: 12px 0 0; justify-content: flex-start; }
  .nav-links.open .lang button { color: var(--muted); }
  .nav-links.open .btn {
    color: var(--white);
    margin-top: 12px;
  }

  .menu-toggle { display: inline-flex; }

  section { padding: 80px 0; }

  .hero-content { padding-top: 140px; }
  .hero-stats { gap: 28px; }

  .brand-logo { height: 30px; }

  .diff-grid { grid-template-columns: 1fr; }
  .dna-grid  { grid-template-columns: 1fr; }

  .cta { padding: 72px 0; }

  .form-row  { grid-template-columns: 1fr; }
  .form-card { padding: 22px; }
  .footer-brand { margin: 0 auto; }
}