@media (max-width: 1180px) {
  :root {
    --text-hero: 3.75rem;
    --text-section-title: 2.5rem;
  }

  .hero-layout,
  .split-layout,
  .contact-layout,
  .footer-layout {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 500px;
  }

  .process-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 1024px) {
  section {
    padding-block: var(--space-80);
  }

  .site-nav {
    grid-template-columns: auto auto;
    justify-content: space-between;
  }

  .nav-toggle {
    display: block;
  }

  .nav-menu,
  .nav-cta {
    display: none;
  }

  .site-header.nav-open .nav-menu {
    position: absolute;
    top: var(--header-height);
    left: 32px;
    right: 32px;
    display: grid;
    justify-content: stretch;
    gap: 0;
    padding: var(--space-16);
    background: rgba(5, 8, 22, 0.96);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(var(--blur-glass));
  }

  .site-header.nav-open .nav-menu a {
    display: block;
    padding: var(--space-12) var(--space-16);
  }

  .insight-grid,
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  :root {
    --text-hero: 3rem;
    --text-section-title: 2.125rem;
    --text-card-title: 1.25rem;
    --text-body: 1rem;
  }

  .section-container,
  .site-nav {
    width: min(100% - 48px, var(--container-lg));
  }

  .section-heading {
    margin-bottom: var(--space-48);
  }

  .hero-section {
    min-height: auto;
    padding-top: var(--space-64);
  }

  .hero-description {
    font-size: 1.125rem;
  }

  .hero-actions,
  .button,
  .nav-cta {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-visual {
    min-height: 420px;
    padding: var(--space-24);
  }

  .knowledge-network {
    min-height: 340px;
  }

  .network-center {
    width: 116px;
    height: 116px;
    font-size: 1.35rem;
  }

  .network-node {
    width: 104px;
    min-height: 60px;
    font-size: 0.875rem;
  }

  .insight-grid,
  .card-grid,
  .comparison-grid,
  .process-list,
  .footer-nav,
  .contact-form {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: var(--space-24);
  }

  .form-submit {
    width: 100%;
  }

  .chat-demo-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-logo {
    width: 190px;
  }
}

@media (max-width: 520px) {
  :root {
    --text-hero: 2.45rem;
    --text-section-title: 1.875rem;
  }

  .section-container,
  .site-nav {
    width: min(100% - 32px, var(--container-lg));
  }

  section {
    padding-block: var(--space-64);
  }

  .brand-logo {
    width: 154px;
  }

  .site-header.nav-open .nav-menu {
    left: 16px;
    right: 16px;
  }

  .hero-visual {
    min-height: 360px;
  }

  .knowledge-network {
    min-height: 285px;
  }

  .network-center {
    width: 96px;
    height: 96px;
  }

  .network-node {
    width: 88px;
    min-height: 52px;
    padding-inline: var(--space-8);
  }

  .node-document {
    left: 2%;
  }

  .node-ticket {
    right: 1%;
  }

  .node-policy {
    left: 1%;
  }

  .node-system {
    right: 2%;
  }

  .insight-card,
  .feature-card,
  .process-card,
  .comparison-card,
  .technology-list article,
  .faq-item {
    padding: var(--space-24);
  }
}