@media (max-width: 1280px) {
  :root {
    --content-width: 76rem;
  }

  .identity-stage {
    grid-template-columns: minmax(0, 1fr) minmax(28rem, 0.85fr);
    gap: var(--space-6);
  }

  .identity-topology {
    max-width: 36rem;
  }

  .orbit-node {
    width: 8.3rem;
    min-height: 5.8rem;
  }

  .intelligence-interface {
    grid-template-columns: minmax(0, 1fr) 21rem;
  }

  .domain-node {
    width: 9.6rem;
  }

  .netsight-intro {
    gap: var(--space-6);
  }

  .case-file__summary {
    grid-template-columns: 6.8rem minmax(16rem, 1.1fr) minmax(14rem, 0.8fr) minmax(11rem, 0.65fr);
  }

  .systems-interface {
    grid-template-columns: 15rem minmax(26rem, 1fr) 15rem;
  }

  .system-principle blockquote {
    font-size: 1.16rem;
  }
}

@media (max-width: 1080px) {
  :root {
    --header-height: 4.3rem;
  }

  .site-header {
    grid-template-columns: auto 1fr auto;
  }

  .desktop-nav {
    display: none;
  }

  .header-actions {
    justify-self: end;
  }

  .menu-toggle {
    display: block;
  }

  .identity-stage {
    grid-template-columns: 1fr;
    gap: var(--space-7);
  }

  .identity-copy {
    max-width: 58rem;
  }

  .identity-topology {
    width: min(100%, 40rem);
    justify-self: center;
  }

  .intelligence-interface {
    grid-template-columns: 1fr;
  }

  .domain-readout {
    min-height: auto;
  }

  .domain-readout h3 {
    margin-top: var(--space-7);
  }

  .domain-readout__connection {
    margin-top: var(--space-6);
  }

  .netsight-intro {
    grid-template-columns: 1fr;
  }

  .netsight-walkthrough {
    grid-template-columns: minmax(20rem, 0.72fr) minmax(0, 1.28fr);
    gap: var(--space-4);
  }

  .netsight-map {
    padding: var(--space-4);
  }

  .pipeline-node {
    min-height: 4rem;
  }

  .stage-panel {
    padding: var(--space-5);
  }

  .signal-list--compact {
    grid-template-columns: 1fr;
  }

  .case-file__summary {
    grid-template-columns: 6rem minmax(0, 1fr) 15rem;
    grid-template-areas:
      "number identity visual"
      "number problem toggle";
  }

  .case-file__problem {
    padding: 0;
    border-left: 0;
  }

  .case-file__details {
    grid-template-columns: repeat(2, 1fr);
  }

  .systems-interface {
    grid-template-columns: 14rem 1fr;
  }

  .system-principle {
    grid-column: 1 / -1;
    min-height: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }

  .system-principle blockquote,
  .system-principle__sequence {
    margin-top: var(--space-5);
  }

  .method-sequence {
    grid-template-columns: repeat(2, 1fr);
  }

  .method-sequence li:nth-child(2) {
    border-right: 0;
  }

  .method-sequence li:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .contact-interface {
    grid-template-columns: 1fr;
  }

  .contact-addresses {
    margin-top: var(--space-6);
  }
}

@media (max-width: 820px) {
  :root {
    --space-9: 6rem;
    --space-10: 7rem;
  }

  .layer,
  .site-footer {
    width: min(100% - 2rem, var(--content-width));
  }

  .site-header {
    width: calc(100% - 1rem);
    top: 0.5rem;
  }

  .theme-toggle__label,
  .header-actions .button--compact {
    display: none;
  }

  .layer-heading--split,
  .evidence-heading {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .identity-layer {
    min-height: auto;
    padding-top: calc(var(--header-height) + 6rem);
  }

  .identity-topology {
    aspect-ratio: 0.92;
  }

  .identity-core {
    width: 11.5rem;
  }

  .identity-core strong {
    font-size: 1.25rem;
  }

  .orbit-node {
    width: 7.6rem;
    min-height: 5.2rem;
    padding: 0.65rem 0.75rem;
  }

  .orbit-node strong {
    font-size: 0.95rem;
  }

  .domain-map {
    min-height: 37rem;
  }

  .domain-core {
    width: 11.5rem;
  }

  .domain-node {
    width: 8rem;
    min-height: 4.8rem;
    padding: 0.65rem;
  }

  .domain-node strong {
    font-size: 0.78rem;
  }

  .domain-node span {
    font-size: 0.54rem;
  }

  .netsight-walkthrough {
    display: block;
  }

  .netsight-map-wrap {
    position: relative;
    top: auto;
    margin-bottom: var(--space-7);
  }

  .netsight-map {
    min-height: auto;
  }

  .pipeline {
    max-width: none;
  }

  .stage-sequence {
    gap: var(--space-5);
    padding-block: 0;
  }

  .stage-panel {
    min-height: auto;
    opacity: 1;
  }

  .stage-panel.is-active {
    transform: none;
  }

  .stage-panel:not(.is-active) {
    background: rgba(var(--surface-rgb), 0.56);
  }

  .kpi-strip {
    grid-template-columns: repeat(2, 1fr);
  }

  .kpi-strip span:last-child {
    grid-column: 1 / -1;
  }

  .technology-chain {
    display: grid;
    grid-template-columns: 1fr;
  }

  .technology-chain i {
    width: 1px;
    height: 1rem;
    margin-inline: auto;
  }

  .technology-chain i::after {
    top: auto;
    right: auto;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) rotate(135deg);
  }

  .interface-functions {
    grid-template-columns: repeat(2, 1fr);
  }

  .evidence-track {
    grid-auto-columns: minmax(19rem, 86vw);
  }

  .project-controls {
    grid-template-columns: 1fr auto;
  }

  .project-controls > .technical-label {
    grid-column: 1 / -1;
  }

  .project-filters {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 0.35rem;
  }

  .filter-button {
    flex: 0 0 auto;
  }

  .case-file__summary {
    grid-template-columns: 5rem 1fr;
    grid-template-areas:
      "number identity"
      "visual visual"
      "problem problem"
      "toggle toggle";
    min-height: auto;
    gap: var(--space-4);
  }

  .case-file__visual {
    height: 11rem;
  }

  .case-file__toggle {
    width: 100%;
  }

  .systems-interface {
    grid-template-columns: 1fr;
  }

  .systems-selector {
    grid-template-columns: repeat(5, minmax(12rem, 1fr));
    overflow-x: auto;
  }

  .system-button {
    min-height: 6.2rem;
  }

  .system-display {
    min-height: 40rem;
  }

  .system-principle {
    grid-template-columns: 1fr;
  }

  .education-axis {
    left: 7.1rem;
  }

  .education-entry {
    grid-template-columns: 5.8rem 2.6rem 1fr;
  }

  .education-entry__content {
    padding-left: var(--space-4);
  }

  .discipline-progression {
    justify-content: flex-start;
  }

  .credentials-layer {
    grid-template-columns: 1fr;
  }

  .site-footer {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .site-footer p {
    text-align: left;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 600px) {
  :root {
    --space-8: 4rem;
    --space-9: 5rem;
    --space-10: 6rem;
  }

  .site-header {
    gap: 0.45rem;
  }

  .brand-signal {
    display: none;
  }

  .header-actions {
    gap: 0.4rem;
  }

  .identity-copy h1 {
    font-size: clamp(3.5rem, 20vw, 6rem);
  }

  .identity-copy h1 span:last-child {
    -webkit-text-stroke-width: 1px;
  }

  .identity-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .identity-actions .text-link {
    grid-column: 1 / -1;
  }

  .identity-links {
    gap: 0.75rem 1rem;
  }

  .identity-topology {
    display: grid;
    aspect-ratio: auto;
    grid-template-columns: 1fr 1fr;
    gap: 0.7rem;
    padding-top: 12.5rem;
  }

  .identity-topology__lines {
    display: none;
  }

  .identity-core {
    top: 0;
    left: 50%;
    width: 10rem;
    transform: translateX(-50%);
  }

  .orbit-node {
    position: static;
    width: auto;
    min-height: 5.5rem;
  }

  .topology-status {
    position: static;
    grid-column: 1 / -1;
    justify-content: center;
    transform: none;
  }

  .continue-indicator {
    margin-top: var(--space-6);
  }

  .domain-map {
    display: grid;
    min-height: auto;
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem;
    padding: 12rem 0.75rem 0.75rem;
  }

  .domain-map__connections {
    display: none;
  }

  .domain-core {
    top: 1.3rem;
    width: 9.6rem;
    transform: translateX(-50%);
  }

  .domain-core strong {
    font-size: 1.1rem;
  }

  .domain-node {
    position: static;
    width: auto;
    min-height: 5rem;
    transform: none !important;
  }

  .domain-node--networks {
    grid-column: 1 / -1;
  }

  .domain-readout {
    padding: var(--space-4);
  }

  .domain-readout__header {
    align-items: flex-start;
    flex-direction: column;
  }

  .netsight-intro h2 {
    font-size: clamp(4rem, 21vw, 6.8rem);
  }

  .netsight-subtitle {
    font-size: 1.25rem;
  }

  .inline-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .inline-actions .button,
  .inline-actions .text-link {
    width: 100%;
  }

  .pipeline-node.is-active {
    transform: none;
  }

  .stage-panel {
    padding: var(--space-4);
  }

  .kpi-strip,
  .interface-functions {
    grid-template-columns: 1fr;
  }

  .kpi-strip span:last-child {
    grid-column: auto;
  }

  .stage-waveform,
  .stage-visual {
    height: 10rem;
  }

  .diagnostic-logic {
    align-items: stretch;
    flex-direction: column;
  }

  .diagnostic-logic b {
    text-align: center;
  }

  .architecture-view {
    inset: 0.5rem;
  }

  .architecture-grid {
    min-width: 0;
    grid-template-columns: 1fr;
  }

  .architecture-transfer {
    width: 1px;
    height: 2rem;
    margin-inline: auto;
  }

  .architecture-transfer::after {
    top: auto;
    right: auto;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) rotate(135deg);
  }

  .architecture-module {
    min-height: auto;
  }

  .case-file__details {
    grid-template-columns: 1fr;
  }

  .case-detail-block {
    min-height: auto;
  }


  .case-file__details--publication .case-detail-block--document {
    grid-column: auto;
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .article-preview img {
    max-height: 26rem;
  }

  .system-display {
    min-height: auto;
    padding: var(--space-4);
  }

  .system-display h3 {
    margin-top: 9rem;
  }

  .system-tool-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .system-display__header {
    align-items: flex-start;
    flex-direction: column;
  }

  .education-axis {
    left: 0.4rem;
  }

  .education-entry {
    grid-template-columns: 1.4rem 1fr;
    grid-template-areas:
      "node year"
      "node content";
    min-height: auto;
  }

  .education-entry__year {
    grid-area: year;
    padding: 0 0 0.8rem 1rem;
  }

  .education-entry__node {
    grid-area: node;
  }

  .education-entry__node span {
    left: 0.4rem;
    transform: translateX(-50%);
  }

  .education-entry__content {
    grid-area: content;
    padding: 0 0 var(--space-6) 1rem;
  }

  .thesis-line {
    grid-template-columns: 1fr;
  }

  .method-sequence {
    grid-template-columns: 1fr;
  }

  .method-sequence li,
  .method-sequence li:nth-child(2) {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .method-sequence li:last-child {
    border-bottom: 0;
  }

  .method-sequence div {
    margin-top: var(--space-6);
  }

  .contact-terminal {
    min-height: 47rem;
    padding: var(--space-4);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .contact-form__footer {
    align-items: stretch;
    flex-direction: column;
  }

  .contact-form__footer .button {
    width: 100%;
  }

  .contact-success {
    inset: var(--space-4);
    padding: var(--space-4);
  }

  .contact-addresses > div {
    grid-template-columns: 5.5rem 1fr;
  }

  .back-to-top {
    right: 0.75rem;
    bottom: 0.75rem;
  }
}

@media (max-width: 390px) {
  .layer,
  .site-footer {
    width: calc(100% - 1.25rem);
  }

  .brand-monogram {
    width: 2.45rem;
    height: 2.45rem;
  }

  .theme-toggle {
    padding-inline: 0.4rem;
  }

  .menu-toggle {
    width: 2.5rem;
    height: 2.5rem;
  }

  .identity-actions {
    grid-template-columns: 1fr;
  }

  .identity-actions .text-link {
    grid-column: auto;
  }

  .identity-topology,
  .domain-map {
    grid-template-columns: 1fr;
  }

  .topology-status,
  .domain-node--networks {
    grid-column: auto;
  }

  .project-controls {
    grid-template-columns: 1fr;
  }

  .project-count {
    justify-self: start;
  }

  .case-file__summary {
    grid-template-columns: 1fr;
    grid-template-areas:
      "number"
      "identity"
      "visual"
      "problem"
      "toggle";
  }

  .system-tool-grid {
    grid-template-columns: 1fr;
  }
}