@media (max-width: 1024px) {
  .hero__inner,
  .differ__grid {
    gap: 2rem;
  }

  .check-grid,
  .pain-grid,
  .stage-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.4rem 1.25rem 1rem;
    background: rgba(10, 20, 43, 0.98);
    border-bottom: 1px solid var(--color-border-dark);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    padding: 0.85rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav-links .btn {
    margin-top: 0.85rem;
    width: 100%;
  }

  .hero__inner,
  .differ__grid,
  .board__body {
    grid-template-columns: 1fr;
  }

  .board__rail {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .stat-grid,
  .check-grid,
  .pain-grid,
  .stage-grid {
    grid-template-columns: 1fr;
  }

  .problem h2,
  .differ h2 {
    max-width: none;
  }
}

@media (max-width: 640px) {
  :root {
    --space-section: 3.5rem;
  }

  .container {
    width: min(var(--container), calc(100% - 2rem));
  }

  .hero__points {
    grid-template-columns: 1fr;
  }

  .hero__inner {
    padding-top: 2.75rem;
  }

  .hero__actions .btn,
  .cta-band__actions .btn,
  .modal__actions .btn {
    width: 100%;
  }

  .stat-ledger,
  .benefits {
    padding-top: 2.5rem;
  }

  .footer-grid,
  .footer-base {
    grid-template-columns: 1fr;
  }

  .footer-base {
    display: grid;
    gap: 0.7rem;
  }

  .factor {
    grid-template-columns: 6.2rem 1fr;
  }
}