:root {
  --font-open-sans: "Open Sans";
  --font-cabin: "Cabin";
  color-scheme: dark;
  --ivory: #f7f7f5;
  --ink: #090909;
  --cobalt: #f05a00;
  --cobalt-dark: #d84f00;
  --vermilion: #f05a00;
  --stone: #343434;
  --paper: #171717;
  --soft-gray: #111111;
  --muted: #b9b9b4;
  --gutter: clamp(1.25rem, 3.2vw, 3rem);
  --content: 1440px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--ink);
  color: var(--ivory);
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--ivory);
  font-family: var(--font-open-sans), "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 2px solid var(--cobalt);
  outline-offset: 4px;
}

.site-header,
.hero,
.proof-rail {
  width: min(100%, var(--content));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.site-header {
  position: relative;
  z-index: 20;
  min-height: 7.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--stone);
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
}

.brand-logo {
  display: block;
  width: 8.25rem;
  height: auto;
}

.desktop-nav a,
.mobile-nav {
  font-family: var(--font-cabin), Arial, sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.35rem, 2.6vw, 2.75rem);
}

.desktop-nav a,
.mobile-nav a {
  position: relative;
  padding-block: 0.7rem;
}

.desktop-nav a::after,
.mobile-nav a::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: var(--cobalt);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.desktop-nav a:hover::after,
.mobile-nav a:hover::after {
  transform: scaleX(1);
}

.desktop-nav .nav-cta,
.mobile-nav .nav-cta {
  padding: 0.9rem 1.1rem;
  color: white;
  background: var(--cobalt);
}

.desktop-nav .nav-cta::after,
.mobile-nav .nav-cta::after {
  display: none;
}

.desktop-nav .nav-cta:hover,
.mobile-nav .nav-cta:hover {
  background: var(--cobalt-dark);
}

.mobile-nav {
  display: none;
}

.hero {
  position: relative;
  min-height: 41.8rem;
  padding-top: clamp(3.25rem, 5.4vw, 5.25rem);
  padding-bottom: 3.2rem;
  overflow: hidden;
  isolation: isolate;
}

.eyebrow-row {
  position: relative;
  z-index: 2;
  width: min(78%, 67rem);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  color: var(--cobalt);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.75rem;
  font-weight: 650;
}

.eyebrow-row p {
  margin: 0;
}

.eyebrow-line {
  height: 1px;
  background: var(--cobalt);
  transform-origin: left;
  animation: draw-line 700ms 120ms both cubic-bezier(0.22, 1, 0.36, 1);
}

.section-index,
.geometry-index {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

h1 {
  position: relative;
  z-index: 2;
  max-width: 66rem;
  margin: clamp(1.55rem, 2.4vw, 2.2rem) 0 0;
  font-family: var(--font-cabin), Arial, sans-serif;
  font-size: clamp(4rem, 7.15vw, 7.15rem);
  font-weight: 600;
  line-height: 0.92;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.hero-lower {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(31rem, 1fr) minmax(18rem, 27rem) minmax(2rem, 0.34fr);
  align-items: start;
  gap: 2.2rem;
  margin-top: clamp(2.25rem, 4vw, 3.5rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: clamp(1.6rem, 3.3vw, 3rem);
}

.button,
.text-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  font-weight: 500;
}

.button-primary {
  min-width: 20rem;
  min-height: 4.55rem;
  padding: 1rem 1.8rem;
  color: white;
  background: var(--cobalt);
  border: 1px solid var(--cobalt);
  transition: background 180ms ease, transform 180ms ease;
}

.button-primary:hover {
  background: var(--cobalt-dark);
  transform: translateY(-1px);
}

.button-primary span:last-child,
.text-link span:last-child {
  font-size: 1.35rem;
  transition: transform 180ms ease;
}

.button-primary:hover span:last-child,
.text-link:hover span:last-child {
  transform: translateX(4px);
}

.text-link {
  min-height: 3rem;
  border-bottom: 1px solid var(--ivory);
}

.text-link:hover {
  color: var(--cobalt);
  border-color: var(--cobalt);
}

.hero-summary {
  position: relative;
  margin: 0;
  padding-left: 1.8rem;
  font-size: clamp(1.03rem, 1.45vw, 1.2rem);
  line-height: 1.55;
  letter-spacing: -0.025em;
}

.hero-summary::before {
  content: "";
  position: absolute;
  top: 0.18rem;
  left: 0;
  width: 2px;
  height: 2rem;
  background: var(--vermilion);
}

.hero-geometry {
  position: absolute;
  z-index: 0;
  inset: 0 0 0 64%;
  pointer-events: none;
  opacity: 0.9;
}

.arc,
.geometry-axis {
  position: absolute;
  display: block;
  border-color: var(--cobalt);
}

.arc-one {
  width: 27rem;
  height: 27rem;
  top: 4rem;
  right: -13.5rem;
  border: 1px solid var(--cobalt);
  border-radius: 50%;
}

.arc-two {
  width: 15rem;
  height: 15rem;
  right: -7.5rem;
  top: 10rem;
  border: 1px solid rgba(240, 90, 0, 0.32);
  border-radius: 50%;
}

.geometry-axis {
  background: var(--cobalt);
  opacity: 0.55;
}

.axis-one {
  width: 1px;
  top: 0;
  bottom: 4rem;
  right: 13.5rem;
}

.axis-two {
  height: 1px;
  width: 20rem;
  top: 17.5rem;
  right: 0;
}

.geometry-index {
  position: absolute;
  color: var(--cobalt);
}

.index-one {
  top: 3.55rem;
  left: 0.5rem;
}

.index-two {
  bottom: 4.8rem;
  left: 0.5rem;
}

.proof-rail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--stone);
  border-bottom: 1px solid var(--stone);
}

.proof-item {
  min-height: 7.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.4rem;
  padding: 1.2rem 2rem;
}

.proof-item + .proof-item {
  border-left: 1px solid var(--stone);
}

.proof-item strong {
  font-family: var(--font-cabin), Arial, sans-serif;
  font-size: clamp(3rem, 4.8vw, 4.4rem);
  font-weight: 600;
  line-height: 0.9;
  letter-spacing: -0.045em;
}

.proof-item span {
  max-width: 9rem;
  font-size: 0.9rem;
  line-height: 1.3;
}

.audience-rail {
  display: grid;
  grid-template-columns: 11rem 1fr;
  gap: 2rem;
  align-items: center;
  padding-top: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--stone);
}

.audience-rail .section-label {
  margin: 0;
}

.audience-rail ul {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.audience-rail li {
  padding-left: 1rem;
  border-left: 1px solid var(--stone);
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.section-shell {
  width: min(100%, var(--content));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.capabilities-section,
.work-section .section-shell:first-child {
  padding-top: clamp(6.5rem, 10vw, 10rem);
  padding-bottom: clamp(6.5rem, 10vw, 10rem);
}

.section-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 0.65fr);
  align-items: end;
  gap: clamp(3rem, 8vw, 8rem);
  padding-bottom: clamp(4rem, 7vw, 6.5rem);
  border-bottom: 1px solid var(--stone);
}

.section-label {
  margin: 0 0 1.4rem;
  color: var(--cobalt);
  font-size: 0.74rem;
  font-weight: 650;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.section-label.inverse {
  color: #ffb27a;
}

.section-intro h2,
.contact-copy h2 {
  max-width: 51rem;
  margin: 0;
  font-family: var(--font-cabin), Arial, sans-serif;
  font-size: clamp(3rem, 5.1vw, 5.25rem);
  font-weight: 600;
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.section-deck {
  margin: 0;
  max-width: 30rem;
  font-size: clamp(1.05rem, 1.5vw, 1.24rem);
  line-height: 1.62;
  letter-spacing: -0.026em;
}

.capabilities-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(21rem, 0.55fr);
  gap: clamp(3rem, 6vw, 6.5rem);
  padding-top: clamp(4rem, 7vw, 6.5rem);
}

.capability-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  align-self: start;
  background: var(--stone);
  border: 1px solid var(--stone);
}

.capability {
  display: block;
  min-height: 17rem;
  padding: clamp(1.8rem, 3vw, 2.7rem);
  background: var(--paper);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.capability:hover {
  position: relative;
  z-index: 1;
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45);
}

.capability-number {
  color: var(--cobalt);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.capability h3,
.case-study h3 {
  margin: 0;
  font-weight: 500;
  letter-spacing: -0.035em;
}

.capability h3 {
  margin-top: 2rem;
  font-size: clamp(1.25rem, 1.9vw, 1.65rem);
  line-height: 1.1;
}

.capability p {
  margin: 1.1rem 0 0;
  color: var(--muted);
  line-height: 1.62;
}

.approach-card {
  position: sticky;
  top: 1.5rem;
  align-self: start;
  padding: clamp(2rem, 4vw, 3.2rem);
  color: var(--ivory);
  background: var(--paper);
}

.approach-kicker {
  margin: 0 0 1.4rem;
  font-family: var(--font-cabin), Arial, sans-serif;
  font-size: clamp(2.4rem, 3.8vw, 3.65rem);
  line-height: 0.98;
  font-weight: 600;
  letter-spacing: -0.035em;
}

.approach-copy {
  margin: 0;
  color: #d5d0c6;
  font-size: 1.02rem;
  line-height: 1.66;
}

.approach-steps {
  margin: 2.8rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid #44413d;
}

.approach-steps li {
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 1.2rem;
  padding-block: 1.45rem;
  border-bottom: 1px solid #44413d;
}

.approach-steps li > span {
  color: #ffb27a;
  font-size: 0.7rem;
  font-weight: 700;
}

.approach-steps strong {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.94rem;
  font-weight: 600;
}

.approach-steps p {
  margin: 0;
  color: #aaa59d;
  font-size: 0.84rem;
  line-height: 1.5;
}

.work-section {
  border-top: 1px solid var(--stone);
  background: var(--soft-gray);
}

.work-intro {
  align-items: end;
}

.case-study-list {
  border-bottom: 1px solid var(--stone);
}

.case-study {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1.35fr) minmax(18rem, 0.65fr);
  gap: clamp(1.5rem, 3.5vw, 4rem);
  padding-block: clamp(3rem, 5vw, 4.75rem);
  border-top: 1px solid var(--stone);
}

.case-study:first-child {
  border-top: none;
}

.case-number,
.case-category {
  color: var(--cobalt);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.case-category {
  margin: 0 0 1.25rem;
}

.case-study h3 {
  max-width: 45rem;
  font-family: var(--font-cabin), Arial, sans-serif;
  font-size: clamp(2rem, 3.5vw, 3.55rem);
  font-weight: 600;
  line-height: 1.03;
  letter-spacing: -0.047em;
}

.case-summary {
  max-width: 41rem;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.65;
}

.case-detail {
  max-width: 41rem;
  margin-top: 1.65rem;
  border-top: 1px solid var(--stone);
  border-bottom: 1px solid var(--stone);
}

.case-detail summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 1rem;
  cursor: pointer;
  list-style: none;
  color: var(--cobalt);
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.case-detail summary::-webkit-details-marker {
  display: none;
}

.case-detail summary span:last-child {
  font-size: 1.25rem;
  transition: transform 180ms ease;
}

.case-detail[open] summary span:last-child {
  transform: rotate(45deg);
}

.case-detail > p {
  margin: 0;
  padding: 0 0 1.2rem;
  color: var(--muted);
  line-height: 1.65;
}

.case-facts {
  align-self: stretch;
  margin: 0;
  border-top: 1px solid var(--stone);
}

.case-facts div {
  display: grid;
  grid-template-columns: minmax(7.4rem, 0.8fr) 1fr;
  align-items: baseline;
  gap: 1rem;
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--stone);
}

.case-facts dt {
  font-family: var(--font-cabin), Arial, sans-serif;
  font-size: clamp(1.65rem, 2.5vw, 2.45rem);
  line-height: 1;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.case-facts dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.contact-band {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(20rem, 0.7fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: end;
  padding-top: clamp(4rem, 7vw, 6.5rem);
  padding-bottom: clamp(4rem, 7vw, 6.5rem);
  color: var(--ivory);
  background: var(--paper);
}

.contact-copy h2 {
  max-width: 50rem;
}

.contact-copy > p:last-child {
  margin: 1.5rem 0 0;
  color: #bdb7ad;
  font-size: 1.1rem;
}

.contact-action {
  display: grid;
  gap: 1.2rem;
}

.button-light {
  min-height: 4.8rem;
  padding: 1rem 1.8rem;
  color: var(--ink);
  background: var(--ivory);
  border: 1px solid var(--ivory);
  transition: color 180ms ease, background 180ms ease;
}

.button-light:hover {
  color: var(--ivory);
  background: var(--cobalt);
  border-color: var(--cobalt);
}

.contact-action > p {
  margin: 0;
  color: #aaa49b;
  font-size: 0.78rem;
  line-height: 1.5;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.site-footer {
  display: grid;
  grid-template-columns: minmax(16rem, 1.1fr) minmax(20rem, 1.25fr) minmax(12rem, 0.65fr);
  align-items: start;
  gap: clamp(2rem, 5vw, 5rem);
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
  border-top: 1px solid var(--stone);
  background: var(--ink);
  font-size: 0.78rem;
}

.footer-brand {
  display: inline-block;
  width: fit-content;
}

.footer-brand img {
  display: block;
  width: 8rem;
  height: auto;
}

.footer-identity p {
  margin: 0;
  margin-top: 1rem;
  color: var(--muted);
}

.footer-links,
.footer-contact {
  display: grid;
  gap: 0.7rem;
}

.footer-links a,
.footer-contact a {
  width: fit-content;
  color: var(--muted);
  line-height: 1.35;
}

.footer-links a:hover,
.footer-contact a:hover,
.capability h3 a:hover {
  color: var(--cobalt);
}

.footer-contact {
  justify-items: end;
}

.subpage-hero {
  min-height: 40rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: clamp(5rem, 8vw, 8rem);
  padding-bottom: clamp(5rem, 8vw, 8rem);
  border-bottom: 1px solid var(--stone);
}

.subpage-hero h1,
.not-found h1 {
  max-width: 70rem;
  margin: 0;
  font-size: clamp(4rem, 7.6vw, 7.5rem);
  font-weight: 600;
  line-height: 0.96;
}

.subpage-deck {
  max-width: 48rem;
  margin: 2.25rem 0 0;
  font-size: clamp(1.15rem, 1.8vw, 1.45rem);
  line-height: 1.55;
  letter-spacing: -0.025em;
}

.subpage-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2rem;
  margin-top: 2.75rem;
}

.service-detail {
  padding-top: clamp(5rem, 9vw, 9rem);
  padding-bottom: clamp(5rem, 9vw, 9rem);
}

.service-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(21rem, 0.6fr);
  gap: clamp(3rem, 7vw, 7rem);
}

.service-sections {
  border-top: 1px solid var(--stone);
}

.service-sections article {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 1.5rem;
  padding-block: 2.5rem;
  border-bottom: 1px solid var(--stone);
}

.service-sections article > span {
  color: var(--cobalt);
  font-size: 0.72rem;
  font-weight: 700;
}

.service-sections h2,
.expanded-studies h2 {
  margin: 0;
  font-family: var(--font-cabin), Arial, sans-serif;
  font-size: clamp(2.1rem, 3.5vw, 3.7rem);
  font-weight: 600;
  line-height: 1.03;
  letter-spacing: -0.048em;
}

.service-sections p {
  max-width: 45rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.65;
}

.outcomes-panel {
  align-self: start;
  padding: clamp(2rem, 4vw, 3.2rem);
  color: var(--ivory);
  background: var(--paper);
}

.outcomes-title {
  margin: 0;
  font-family: var(--font-cabin), Arial, sans-serif;
  font-size: clamp(2.6rem, 4vw, 4rem);
  line-height: 0.98;
  font-weight: 600;
  letter-spacing: -0.035em;
}

.outcomes-panel ul {
  margin: 2.5rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid #45413c;
}

.outcomes-panel li {
  padding: 1.2rem 0 1.2rem 1.5rem;
  border-bottom: 1px solid #45413c;
  color: #d2ccc1;
  line-height: 1.45;
}

.outcomes-panel li::marker {
  color: var(--cobalt);
}

.service-closing {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(20rem, 0.8fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: center;
  padding-top: clamp(4rem, 7vw, 6.5rem);
  padding-bottom: clamp(4rem, 7vw, 6.5rem);
  color: var(--ivory);
  background: var(--paper);
}

.service-closing > p {
  margin: 0;
  font-family: var(--font-cabin), Arial, sans-serif;
  font-size: clamp(2.75rem, 5vw, 5rem);
  line-height: 1;
  font-weight: 600;
  letter-spacing: -0.035em;
}

.about-content {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(20rem, 0.65fr);
  gap: clamp(3rem, 8vw, 8rem);
  padding-top: clamp(5rem, 9vw, 9rem);
  padding-bottom: clamp(5rem, 9vw, 9rem);
}

.about-narrative {
  max-width: 48rem;
}

.about-narrative p {
  margin: 0 0 1.75rem;
  font-family: var(--font-cabin), Arial, sans-serif;
  font-size: clamp(1.65rem, 2.8vw, 2.55rem);
  line-height: 1.28;
  font-weight: 500;
  letter-spacing: -0.025em;
}

.experience-rail {
  border-top: 1px solid var(--stone);
}

.experience-rail div {
  display: grid;
  gap: 0.5rem;
  padding-block: 1.6rem;
  border-bottom: 1px solid var(--stone);
}

.experience-rail strong {
  font-family: var(--font-cabin), Arial, sans-serif;
  font-size: clamp(2rem, 3vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.04em;
}

.experience-rail span {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.expanded-studies {
  padding-bottom: clamp(5rem, 9vw, 9rem);
}

.expanded-studies > article {
  padding-block: clamp(4rem, 7vw, 7rem);
  border-bottom: 1px solid var(--stone);
}

.study-heading {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr);
  gap: 2rem;
}

.study-heading > span {
  color: var(--cobalt);
  font-size: 0.72rem;
  font-weight: 700;
}

.study-heading h2 {
  max-width: 62rem;
}

.study-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: 3rem 0 0 6rem;
  border-top: 1px solid var(--stone);
  border-left: 1px solid var(--stone);
}

.study-detail-grid div {
  padding: 1.8rem;
  border-right: 1px solid var(--stone);
  border-bottom: 1px solid var(--stone);
}

.study-detail-grid dt {
  color: var(--cobalt);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.study-detail-grid dd {
  margin: 0.9rem 0 0;
  color: var(--muted);
  line-height: 1.62;
}

.not-found {
  min-height: 42rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 6rem;
  padding-bottom: 6rem;
}

.not-found > p:not(.section-label) {
  max-width: 40rem;
  margin: 2rem 0 0;
  font-size: 1.2rem;
  line-height: 1.6;
}

.reveal {
  animation: rise-in 620ms both cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-two {
  animation-delay: 70ms;
}

.reveal-three {
  animation-delay: 150ms;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes draw-line {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

@media (max-width: 980px) {
  .desktop-nav {
    display: none;
  }

  .mobile-nav {
    position: relative;
    display: block;
  }

  .brand-logo {
    width: 7.25rem;
  }

  .mobile-nav summary {
    cursor: pointer;
    list-style: none;
    padding: 0.7rem 0;
  }

  .mobile-nav summary::-webkit-details-marker {
    display: none;
  }

  .mobile-nav nav {
    position: absolute;
    top: 2.8rem;
    right: 0;
    width: 13rem;
    display: grid;
    gap: 0.2rem;
    padding: 1rem 1.25rem;
    background: var(--paper);
    border: 1px solid var(--stone);
  }

  .hero {
    min-height: auto;
  }

  .eyebrow-row {
    width: 100%;
  }

  .hero-lower {
    grid-template-columns: 1fr;
    max-width: 43rem;
  }

  .hero-summary {
    grid-row: 1;
  }

  .hero-geometry {
    left: 70%;
    opacity: 0.35;
  }

  .section-intro,
  .capabilities-grid,
  .contact-band,
  .service-detail-grid,
  .service-closing,
  .about-content {
    grid-template-columns: 1fr;
  }

  .section-intro {
    align-items: start;
    gap: 2rem;
  }

  .section-deck {
    max-width: 43rem;
  }

  .approach-card {
    position: relative;
    top: auto;
  }

  .case-study {
    grid-template-columns: 3rem minmax(0, 1fr);
  }

  .case-facts {
    grid-column: 2;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  .case-facts div {
    display: block;
    padding: 1.15rem;
  }

  .case-facts div + div {
    border-left: 1px solid var(--stone);
  }

  .case-facts dd {
    margin-top: 0.45rem;
  }

  .contact-action {
    max-width: 30rem;
  }

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

  .footer-contact {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, auto);
    justify-content: start;
    justify-items: start;
    gap: 1.5rem;
  }

  .audience-rail {
    grid-template-columns: 1fr;
  }

  .audience-rail ul {
    grid-template-columns: 1fr;
  }

  .outcomes-panel {
    max-width: 42rem;
  }
}

@media (max-width: 680px) {
  .site-header {
    min-height: 5.25rem;
  }

  .brand {
    display: block;
  }

  .brand-logo {
    width: 6.25rem;
  }

  .hero {
    padding-top: 3.25rem;
    padding-bottom: 2.75rem;
  }

  .eyebrow-row {
    display: flex;
    align-items: center;
    font-size: 0.66rem;
    line-height: 1.45;
  }

  .eyebrow-line {
    flex: 1;
  }

  .section-index {
    display: none;
  }

  h1 {
    margin-top: 1.7rem;
    font-size: clamp(3.25rem, 16vw, 5.2rem);
    line-height: 0.92;
  }

  .hero-lower {
    margin-top: 2rem;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
    gap: 1rem;
  }

  .button-primary,
  .text-link {
    width: 100%;
    min-width: 0;
  }

  .text-link {
    padding-inline: 0.1rem;
  }

  .hero-geometry {
    display: none;
  }

  .proof-rail {
    grid-template-columns: 1fr;
  }

  .proof-item {
    justify-content: flex-start;
    min-height: 6rem;
  }

  .proof-item + .proof-item {
    border-left: none;
    border-top: 1px solid var(--stone);
  }

  .capabilities-section,
  .work-section .section-shell:first-child {
    padding-top: 5rem;
    padding-bottom: 5rem;
  }

  .section-intro {
    padding-bottom: 3.5rem;
  }

  .capabilities-grid {
    padding-top: 3.5rem;
  }

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

  .capability {
    grid-template-columns: 2.5rem 1fr;
    gap: 0.9rem 1rem;
  }

  .capability p {
    grid-column: 2;
  }

  .approach-card {
    margin-inline: calc(var(--gutter) * -1);
  }

  .case-study {
    grid-template-columns: 1fr;
    gap: 1.4rem;
  }

  .case-number {
    display: none;
  }

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

  .case-facts div {
    display: grid;
  }

  .case-facts div + div {
    border-left: none;
  }

  .contact-band {
    gap: 2.5rem;
  }

  .site-footer {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding-top: 2.25rem;
    padding-bottom: 2.25rem;
  }

  .footer-links,
  .footer-contact {
    grid-column: auto;
    grid-template-columns: 1fr;
    justify-items: start;
    gap: 0.7rem;
  }

  .audience-rail {
    padding-top: 2.25rem;
    padding-bottom: 2.25rem;
  }

  .subpage-hero {
    min-height: auto;
  }

  .subpage-hero h1,
  .not-found h1 {
    font-size: clamp(3.2rem, 15vw, 5rem);
  }

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

  .service-sections article {
    grid-template-columns: 2.5rem 1fr;
    gap: 1rem;
  }

  .outcomes-panel {
    margin-inline: calc(var(--gutter) * -1);
  }

  .service-closing {
    margin-inline: auto;
  }

  .study-heading {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .study-detail-grid {
    grid-template-columns: 1fr;
    margin-left: 0;
  }

  .about-narrative p {
    font-size: 1.55rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}