/* Wide desktop tuning */
@media (min-width: 90.01rem) {
  .hero__grid {
    min-height: 47rem;
  }

  .hero .voice-console {
    justify-self: end;
    width: min(100%, 48rem);
  }
}

@media (max-width: 80rem) {
  .hero__grid {
    grid-template-columns: minmax(28rem, 0.92fr) minmax(32rem, 1.08fr);
    gap: clamp(2rem, 4vw, 4rem);
  }

  .primary-nav {
    gap: 0;
  }

  .primary-nav a {
    padding-inline: 0.6rem;
  }

  .voice-console__state-rail li {
    font-size: 0;
  }

  .voice-console__state-rail li span {
    font-size: 0.6rem;
  }

  .industry-story {
    gap: clamp(2rem, 4vw, 4rem);
  }
}

@media (max-width: 70rem) {
  .hero__grid {
    grid-template-columns: minmax(0, 1fr);
    max-width: 56rem;
  }

  .hero__copy {
    max-width: 49rem;
    padding-top: var(--space-5);
  }

  .hero__copy h1 {
    max-width: 11ch;
  }

  .hero .voice-console {
    width: 100%;
    transform: none;
  }

  .service-panels > .tabpanel {
    grid-template-columns: minmax(15rem, 0.55fr) minmax(22rem, 1.45fr);
    gap: var(--space-6);
  }

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

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

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

/* Tablet and mobile navigation; sticky chapters return to a natural document flow. */
@media (max-width: 56.1875rem) {
  :root {
    --gutter: clamp(1rem, 4vw, 2rem);
  }

  body.menu-open {
    overflow: hidden;
  }

  .nav-shell {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .menu-toggle {
    display: grid;
  }

  .primary-nav {
    position: fixed;
    z-index: var(--z-menu);
    top: calc(var(--header-height) + 0.5rem);
    right: var(--gutter);
    left: var(--gutter);
    display: grid;
    align-content: start;
    gap: 0.25rem;
    max-height: calc(100dvh - var(--header-height) - 1.5rem);
    padding: 0.75rem;
    overflow: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--paper);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateY(-0.75rem) scale(0.98);
    transform-origin: top;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--duration) var(--ease-out), transform var(--duration) var(--ease-out), visibility 0s linear var(--duration);
  }

  .primary-nav.is-open,
  .primary-nav[data-open="true"] {
    opacity: 1;
    transform: none;
    visibility: visible;
    pointer-events: auto;
    transition-delay: 0s;
  }

  .no-js .site-header {
    position: relative;
  }

  .no-js .nav-shell {
    grid-template-columns: minmax(0, 1fr);
    padding-block: 0.75rem;
  }

  .no-js .menu-toggle {
    display: none;
  }

  .no-js .primary-nav {
    position: static;
    display: grid;
    max-height: none;
    margin-top: 0.5rem;
    opacity: 1;
    transform: none;
    visibility: visible;
    pointer-events: auto;
  }

  .primary-nav a {
    justify-content: flex-start;
    min-height: 3.1rem;
    padding-inline: 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
  }

  .primary-nav .button {
    justify-content: center;
    margin-top: 0.35rem;
    color: var(--white);
  }

  .section-heading--split,
  .faq__layout {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-5);
  }

  .section-heading--split > p {
    max-width: 43rem;
  }

  .conversion-band {
    grid-template-columns: minmax(0, 1fr);
  }

  .conversion-band__actions {
    justify-self: start;
  }

  .journey[data-journey-mode="scroll"] {
    min-height: auto;
    padding-bottom: clamp(4.75rem, 9vw, 8.5rem);
  }

  .journey[data-journey-mode="scroll"] .section-heading,
  .journey[data-journey-mode="scroll"] .journey__stage {
    position: static;
    min-height: auto;
    height: auto;
  }

  .journey__status {
    grid-template-columns: auto minmax(5rem, 1fr);
  }

  .journey__status-meta {
    grid-column: 1 / -1;
    justify-content: space-between;
    width: 100%;
  }

  .journey__disclaimer {
    max-width: none;
    text-align: left;
  }

  .journey-track,
  .journey[data-journey-mode="scroll"] .journey-track {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
    height: auto;
  }

  .journey[data-journey-mode="scroll"] .journey-card,
  .journey-card {
    grid-area: auto;
    width: auto;
    height: auto;
    min-height: 23rem;
    margin: 0;
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }

  .service-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-6);
  }

  .service-layout > .tablist {
    position: static;
    display: flex;
    width: 100%;
    padding: 0 0 var(--space-2);
    overflow-x: auto;
    scroll-snap-type: x proximity;
  }

  .service-layout > .tablist .tab {
    width: auto;
    min-height: 2.9rem;
    scroll-snap-align: start;
  }

  .service-panels > .tabpanel,
  .system-panel {
    grid-template-columns: minmax(0, 1fr);
  }

  .service-copy,
  .system-panel__copy {
    max-width: 43rem;
  }

  .service-visual {
    min-height: 26rem;
  }

  .intelligence__tabs {
    margin-right: calc(var(--gutter) * -1);
    margin-left: calc(var(--gutter) * -1);
    padding-inline: var(--gutter);
  }

  .system-stage {
    min-height: auto;
  }

  .system-flow {
    min-height: 27rem;
  }

  .integration-explorer__workspace {
    grid-template-columns: minmax(0, 1fr);
  }

  .integration-detail {
    min-height: 20rem;
  }

  .industry-story,
  .industry-story:nth-child(even) {
    grid-template-columns: minmax(0, 1fr);
  }

  .industry-story:nth-child(even) .industry-story__media {
    order: 0;
  }

  .industry-story__media,
  .industry-story__media img,
  .industry-story__media video {
    min-height: 0;
    aspect-ratio: 16 / 10;
  }

  .industry-story__media img,
  .industry-story__media video {
    position: absolute;
    inset: 0;
  }

  .industry-story figcaption {
    max-width: 46rem;
  }

  .planner-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .planner-output {
    position: static;
  }

  .delivery-process {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: var(--space-8);
  }

  .delivery-process::before {
    display: none;
  }

  .faq > .section-shell > .section-heading {
    position: static;
  }
}

@media (max-width: 48rem) {
  .chapter {
    padding-block: clamp(4rem, 12vw, 6rem);
  }

  .hero {
    padding-block: 2.5rem 4.5rem;
  }

  .hero__copy {
    padding-top: 0;
  }

  .voice-console__header,
  .voice-console__footer {
    align-items: flex-start;
  }

  .voice-console__state-rail {
    grid-template-columns: repeat(9, 2.4rem);
    overflow-x: auto;
    overscroll-behavior-inline: contain;
  }

  .voice-console__workspace {
    grid-template-columns: minmax(0, 1fr);
  }

  .voice-console__transcript,
  .voice-console__actions {
    min-height: auto;
  }

  .voice-console__actions {
    border-top: 1px solid var(--border-inverse);
  }

  .voice-console__footer {
    display: grid;
  }

  .voice-console__footer > p {
    max-width: none;
    text-align: left;
  }

  .journey-track,
  .journey[data-journey-mode="scroll"] .journey-track {
    grid-template-columns: minmax(0, 1fr);
  }

  .journey-card,
  .journey[data-journey-mode="scroll"] .journey-card {
    min-height: 21rem;
  }

  .service-visual--voice {
    grid-template-columns: minmax(0, 1fr);
  }

  .service-visual__centre {
    width: 11rem;
    min-height: 11rem;
    margin-inline: auto;
  }

  .service-visual__outcomes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .service-visual--workflow {
    grid-template-columns: minmax(0, 1fr);
  }

  .workflow-arrow {
    transform: rotate(90deg);
    justify-self: center;
  }

  .workflow-stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .system-flow,
  .system-flow--rules,
  .system-flow--control {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-3);
    min-height: auto;
  }

  .system-connector {
    width: 1.5rem;
    height: 2rem;
    justify-self: center;
    transform: rotate(90deg);
  }

  .system-flow--rules .system-node--outcome {
    grid-column: auto;
  }

  .system-flow--control > i {
    justify-self: center;
    transform: rotate(90deg);
  }

  .control-lane {
    min-height: 6rem;
  }

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

  .planner-diagram {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-3);
    min-height: auto;
  }

  .planner-connector {
    width: 1.5rem;
    height: 2rem;
    justify-self: center;
    transform: rotate(90deg);
  }

  .planner-diagram__column {
    width: 100%;
  }

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

  .planner-diagram__systems > p {
    grid-column: 1 / -1;
  }

  .planner-summary__row {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.2rem;
  }

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

  .site-footer__grid > div:first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 40rem) {
  .hero__copy h1 {
    font-size: clamp(3.2rem, 14.8vw, 4.3rem);
  }

  .hero__actions,
  .closing__actions,
  .conversion-band__actions {
    display: grid;
    width: 100%;
  }

  .hero__actions .button,
  .closing__actions .button,
  .conversion-band__actions .button {
    width: 100%;
  }

  .conversion-band__phone {
    grid-column: auto;
  }

  .hero__equation {
    gap: 0.3rem;
  }

  .hero__equation span {
    padding: 0.3rem 0.48rem;
    font-size: 0.66rem;
  }

  .voice-console__header {
    display: grid;
  }

  .voice-console__status {
    max-width: none;
    text-align: left;
  }

  .scenario-switcher {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }

  .scenario-switcher button {
    justify-content: flex-start;
    width: 100%;
  }

  .voice-console__controls {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: 100%;
  }

  .icon-button {
    width: 100%;
  }

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

  .journey__status-meta {
    align-items: flex-start;
    flex-direction: column;
  }

  .journey__progress-track {
    order: 3;
  }

  .time-options,
  .calendar-slots,
  .service-visual__outcomes,
  .workflow-stack {
    grid-template-columns: minmax(0, 1fr);
  }

  .service-visual {
    min-height: 24rem;
    padding: 1rem;
  }

  .integration-explorer {
    margin-inline: calc(var(--gutter) * -0.35);
  }

  fieldset.planner-form__step {
    grid-template-columns: minmax(0, 1fr);
  }

  .planner-diagram__systems {
    grid-template-columns: minmax(0, 1fr);
  }

  .industry-story figcaption li {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.3rem;
  }

  .delivery-process {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-7);
  }

  .faq__list summary {
    font-size: var(--step-0);
  }

  .live-dialog__setup,
  .live-dialog__workspace {
    grid-template-columns: minmax(0, 1fr);
  }

  .live-dialog__controls {
    display: grid;
  }

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

  .site-footer__grid > div:first-child {
    grid-column: auto;
  }

  .site-footer__base,
  .footer-bottom {
    display: grid;
  }
}

@media (max-width: 27rem) {
  :root {
    --gutter: 1rem;
  }

  .brand {
    font-size: 0.92rem;
  }

  .brand__mark {
    width: 1.9rem;
    height: 1.9rem;
  }

  .voice-console__visual {
    min-height: 7rem;
  }

  .live-dialog {
    width: calc(100% - 1rem);
    max-height: calc(100dvh - 1rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .primary-nav {
    transition: none;
  }

  .journey[data-journey-mode="scroll"] {
    min-height: auto;
    padding-bottom: clamp(4.75rem, 9vw, 8.5rem);
  }

  .journey[data-journey-mode="scroll"] :where(.section-heading, .journey__status, .journey__stage) {
    position: static;
    min-height: auto;
    height: auto;
  }

  .journey[data-journey-mode="scroll"] .journey-track {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    height: auto;
  }

  .journey[data-journey-mode="scroll"] .journey-card {
    grid-area: auto;
    width: auto;
    height: auto;
    min-height: 23rem;
    margin: 0;
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
}

@media (prefers-reduced-motion: reduce) and (max-width: 48rem) {
  .journey[data-journey-mode="scroll"] .journey-track {
    grid-template-columns: minmax(0, 1fr);
  }
}