@media (max-width: 1199px) {
  :root {
    --page-padding: 24px;
    --grid-columns: 8;
    --grid-gap: 20px;
    --section-space: var(--space-9);
    --section-space-major: var(--space-10);
    --section-space-compact: var(--space-8);
  }

  .header-layout {
    gap: var(--space-5);
  }

  .navigation-panel {
    gap: var(--space-5);
  }

  .navigation-list {
    gap: var(--space-5);
  }

  .hero-layout {
    gap: var(--space-7);
  }

  .hero-title {
    font-size: clamp(46px, 4.7vw, 56px);
  }

  .page-section {
    padding-block: var(--space-9);
  }

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

  .case-study-grid,
  .insights-layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  }

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

  .people-layout {
    gap: var(--space-7);
  }

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

  .testimonial-card:last-child {
    grid-column: 1 / -1;
  }

  .conversion-panel {
    gap: var(--space-7);
    padding: var(--space-7);
  }

  .footer-grid {
    grid-template-columns: 1.4fr repeat(2, 1fr);
  }
}

@media (max-width: 899px) {
  .header-layout {
    min-height: 76px;
  }

  .site-logo {
    width: 158px;
  }

  .menu-toggle {
    display: inline-grid;
    place-items: center;
  }

  .navigation-panel {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: grid;
    max-height: calc(100vh - 76px);
    align-items: stretch;
    gap: var(--space-5);
    padding: var(--space-5) var(--page-padding) var(--space-6);
    overflow-y: auto;
    border-top: var(--border-default);
    border-bottom: var(--border-default);
    background: var(--color-white);
    box-shadow: 0 18px 30px rgb(7 20 38 / 8%);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    visibility: hidden;
    transition:
      opacity var(--motion-fast) var(--ease-standard),
      transform var(--motion-fast) var(--ease-standard),
      visibility var(--motion-fast) var(--ease-standard);
  }

  .site-header[data-menu-open="true"] .navigation-panel {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
    visibility: visible;
  }

  .navigation-list {
    display: grid;
    align-items: stretch;
    gap: 0;
  }

  .navigation-link {
    width: 100%;
    min-height: 52px;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-border);
    font-size: 16px;
  }

  .navigation-cta {
    width: 100%;
  }

  body.menu-open {
    overflow: hidden;
  }

  .hero-section {
    padding-block: var(--space-10);
  }

  .hero-layout {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .hero-content {
    max-width: 680px;
  }

  .hero-title {
    font-size: clamp(40px, 7vw, 52px);
  }

  .hero-visual {
    max-width: 560px;
    justify-self: center;
  }

  .trust-layout {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }

  .trust-title {
    max-width: none;
    text-align: center;
  }

  .section-header {
    margin-bottom: var(--space-7);
  }

  .specialist-feature,
  .people-layout,
  .faq-layout,
  .conversion-panel {
    grid-template-columns: 1fr;
  }

  .specialist-feature {
    gap: var(--space-6);
  }

  .case-study-grid,
  .insights-layout {
    grid-template-columns: 1fr;
  }

  .case-study-card--featured,
  .insight-card--featured {
    grid-row: auto;
  }

  .why-pillars {
    grid-template-columns: 1fr;
  }

  .why-pillar,
  .why-pillar + .why-pillar {
    padding: var(--space-6) 0;
    border-left: 0;
  }

  .why-pillar + .why-pillar {
    border-top: var(--border-default);
  }

  .process-track {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .process-track::before {
    top: 28px;
    right: auto;
    bottom: 28px;
    left: 27px;
    width: 2px;
    height: auto;
  }

  .process-step {
    min-height: 150px;
    padding: 0 0 var(--space-7) 88px;
  }

  .process-node {
    position: absolute;
    top: 0;
    left: 0;
  }

  .faq-heading {
    position: static;
  }

  .conversion-panel {
    align-items: stretch;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 767px) {
  :root {
    --page-padding: 20px;
    --grid-columns: 4;
    --grid-gap: 16px;
    --section-space: var(--space-8);
    --section-space-major: var(--space-8);
    --section-space-compact: var(--space-7);
  }

  body {
    font-size: var(--mobile-body);
  }

  .text-large {
    font-size: var(--mobile-body-large);
  }

  .text-small,
  .form-label,
  .form-helper,
  .form-error {
    font-size: var(--mobile-small);
  }

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

  .button {
    width: 100%;
  }

  .site-logo {
    width: 148px;
  }

  .hero-section {
    padding-block: var(--space-8);
  }

  .hero-layout {
    gap: var(--space-7);
  }

  .hero-eyebrow {
    margin-bottom: var(--space-3);
    font-size: 13px;
  }

  .hero-title {
    margin-bottom: var(--space-4);
    font-size: clamp(38px, 10.5vw, 40px);
    line-height: 1.1;
  }

  .hero-summary {
    margin-bottom: var(--space-5);
    font-size: var(--mobile-body);
  }

  .hero-actions {
    display: grid;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
  }

  .hero-visual {
    padding: var(--space-4);
  }

  .performance-tag {
    min-height: 40px;
    padding: var(--space-2) var(--space-3);
    font-size: 12px;
  }

  .performance-tag--visibility {
    top: 9%;
    right: var(--space-3);
    transform: none;
  }

  .performance-tag--leads {
    top: auto;
    bottom: 9%;
    left: var(--space-3);
    transform: none;
  }

  .performance-tag--cost {
    display: none;
  }

  .trust-strip {
    padding-block: var(--space-6);
  }

  .client-logo-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-2) var(--space-4);
  }

  .client-logo-item {
    min-height: 52px;
  }

  .client-logo-item img {
    max-height: 34px;
  }

  .client-logo-item:last-child {
    grid-column: 1 / -1;
  }

  .page-section {
    padding-block: var(--space-8);
  }

  .section-title {
    font-size: var(--mobile-h2);
  }

  .section-copy {
    font-size: var(--mobile-body);
  }

  .services-grid,
  .supporting-principles,
  .trust-signal-row,
  .testimonials-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    min-height: 0;
  }

  .specialist-feature,
  .case-study-card--featured,
  .conversion-panel {
    padding: var(--space-5);
  }

  .channel-prompt,
  .section-end-cta,
  .process-callout,
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .channel-prompt {
    gap: var(--space-2);
    text-align: left;
  }

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

  .case-study-kpis--compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .section-end-cta {
    gap: var(--space-4);
  }

  .section-end-cta p {
    font-size: 21px;
  }

  .supporting-principles {
    gap: var(--space-5);
    padding: var(--space-5);
  }

  .process-step {
    padding-left: 76px;
  }

  .process-callout {
    gap: var(--space-4);
    padding: var(--space-5);
  }

  .callout-mark {
    display: none;
  }

  .cta-pair {
    width: 100%;
  }

  .team-visual {
    aspect-ratio: 4 / 3;
  }

  .trust-signal-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding-inline: 0;
    text-align: center;
  }

  .trust-signal-item {
    padding-inline: var(--space-2);
  }

  .trust-signal-metric {
    font-size: 28px;
  }

  .trust-signal-label {
    font-size: 13px;
  }

  .testimonials-block {
    margin-top: var(--space-9);
  }

  .testimonial-card:last-child {
    grid-column: auto;
  }

  .insight-card--supporting {
    grid-template-columns: 1fr;
  }

  .insight-card--supporting .insight-visual {
    min-height: 190px;
    border-right: 0;
    border-bottom: var(--border-default);
  }

  .insight-content,
  .insight-card--featured .insight-content {
    padding: var(--space-5);
  }

  .insight-card--featured h3 {
    font-size: 24px;
  }

  .faq-question {
    min-height: 68px;
    font-size: 16px;
  }

  .final-cta-section {
    padding-block: var(--space-8);
  }

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

  .form-field--full {
    grid-column: auto;
  }

  .site-footer {
    padding-top: var(--space-8);
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-bottom nav {
    gap: var(--space-4);
  }
}

@media (max-width: 374px) {
  :root {
    --page-padding: 16px;
  }

  .site-logo {
    width: 138px;
  }
}