:root {
  --oa-shell: min(1320px, calc(100vw - 96px));
}

.desktop-nav {
  gap: 22px;
}

.desktop-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.oa-shell {
  width: var(--oa-shell);
  margin: 0 auto;
}

.oa-film-track {
  position: relative;
  height: 220svh;
}

.oa-film-track-hero {
  height: 240svh;
}

.oa-film-track-journey {
  height: 430svh;
}

.oa-film-track-assessment {
  height: 240svh;
}

.oa-film-stage {
  position: sticky;
  top: 0;
  height: 100svh;
  min-height: 700px;
  overflow: clip;
  isolation: isolate;
  background: var(--paper);
}

.oa-film-media,
.oa-film-media video,
.oa-grid,
.oa-hero-shade,
.oa-friction-shade,
.oa-journey-shade,
.oa-assessment-shade {
  position: absolute;
  inset: 0;
}

.oa-film-media {
  z-index: -3;
}

.oa-film-media video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
}

.oa-grid {
  z-index: 0;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: linear-gradient(90deg, black, transparent 76%);
  opacity: 0.34;
  pointer-events: none;
}

.oa-hero-shade,
.oa-assessment-shade {
  z-index: -2;
  background:
    linear-gradient(
      90deg,
      oklch(0.975 0.008 120 / 0.98) 0%,
      oklch(0.975 0.008 120 / 0.94) 31%,
      oklch(0.975 0.008 120 / 0.55) 55%,
      transparent 78%
    ),
    linear-gradient(
      180deg,
      transparent 55%,
      oklch(0.975 0.008 120 / 0.72) 100%
    );
}

.oa-hero-copy {
  position: relative;
  z-index: 2;
  padding-top: clamp(170px, 21vh, 240px);
}

.oa-hero-copy h1,
.oa-friction-copy h2,
.oa-assessment-copy h2 {
  max-width: 760px;
  margin: 24px 0 0;
  font-size: clamp(58px, 6.6vw, 102px);
  font-weight: 800;
  letter-spacing: 0;
  line-height: var(--display-leading);
}

.oa-hero-copy > p:not(.eyebrow),
.oa-assessment-copy > p:not(.eyebrow) {
  max-width: 600px;
  margin: 38px 0 0;
  color: var(--ink-soft);
  font-size: clamp(18px, 1.5vw, 23px);
  line-height: 1.55;
}

.oa-hero-copy .button,
.oa-assessment-copy .button {
  margin-top: 30px;
}

.oa-hero-outcomes {
  position: relative;
  z-index: 2;
  width: var(--oa-shell);
  margin: 40px auto 34px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  background: oklch(0.975 0.008 120 / 0.76);
  backdrop-filter: blur(12px);
}

.oa-hero {
  height: auto;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
}

.oa-hero-copy {
  flex: 1;
}

.oa-hero-outcomes div {
  min-height: 74px;
  padding: 18px 20px;
  display: grid;
  grid-template-columns: 42px 1fr;
  align-items: center;
  gap: 12px;
}

.oa-hero-outcomes div + div {
  border-left: 1px solid var(--line);
}

.oa-hero-outcomes dt,
.oa-hero-outcomes dd {
  margin: 0;
}

.oa-hero-outcomes dt {
  color: var(--coral);
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 10px;
}

.oa-hero-outcomes dd {
  font-size: 13px;
  font-weight: 720;
}

.oa-statement,
.oa-journey-intro,
.oa-result,
.oa-evidence {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.oa-statement {
  padding: 150px 0;
  background:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    var(--paper);
  background-size: calc(100vw / 12) 100%;
}

.oa-statement-grid {
  display: grid;
  grid-template-columns: 170px minmax(0, 1.6fr) minmax(280px, 0.8fr);
  gap: 48px;
  align-items: start;
}

.oa-statement h2,
.oa-journey-intro h2,
.oa-result h2,
.oa-evidence-heading h2 {
  margin: 0;
  font-size: clamp(50px, 5.3vw, 82px);
  line-height: var(--heading-leading);
}

.oa-statement-grid > p:last-child,
.oa-journey-intro .oa-shell > p:last-child,
.oa-evidence-heading > p:last-child {
  margin: 0;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.7;
}

.oa-friction-shade {
  z-index: -2;
  background:
    linear-gradient(
      90deg,
      transparent 0 38%,
      oklch(0.255 0.035 190 / 0.2) 52%,
      oklch(0.255 0.035 190 / 0.92) 74%
    ),
    linear-gradient(180deg, transparent 55%, oklch(0.255 0.035 190 / 0.54));
}

.oa-friction-copy {
  position: relative;
  z-index: 2;
  width: min(650px, 44vw);
  margin-right: calc((100vw - var(--oa-shell)) / 2);
  margin-left: auto;
  padding-top: clamp(150px, 19vh, 210px);
  color: var(--paper);
}

.oa-friction-copy .eyebrow {
  color: var(--lime);
}

.oa-friction-copy h2 {
  font-size: clamp(50px, 5vw, 78px);
}

.oa-friction-copy > p {
  margin: 28px 0 0;
  color: oklch(0.9 0.018 145);
  font-size: 18px;
  line-height: 1.65;
}

.oa-friction-copy ul {
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid oklch(0.975 0.008 120 / 0.28);
}

.oa-friction-copy li {
  padding: 13px 0;
  border-bottom: 1px solid oklch(0.975 0.008 120 / 0.2);
  font-size: 13px;
  font-weight: 650;
}

.oa-journey-intro {
  padding: 150px 0 130px;
  background: var(--surface-sage);
}

.oa-journey-intro .oa-shell {
  display: grid;
  grid-template-columns: 170px minmax(0, 1.6fr) minmax(280px, 0.8fr);
  gap: 48px;
  align-items: start;
}

.oa-journey-shade {
  z-index: -2;
  background:
    linear-gradient(180deg, oklch(0.255 0.035 190 / 0.2), transparent 28%),
    linear-gradient(0deg, oklch(0.255 0.035 190 / 0.82), transparent 48%);
}

.oa-journey-status {
  position: absolute;
  z-index: 2;
  right: max(48px, calc((100vw - var(--oa-shell)) / 2));
  bottom: 112px;
  left: max(48px, calc((100vw - var(--oa-shell)) / 2));
  min-height: 150px;
  padding: 26px 30px;
  display: grid;
  grid-template-columns: 92px minmax(0, 760px);
  gap: 30px;
  align-items: start;
  background: oklch(0.975 0.008 120 / 0.92);
  color: var(--ink);
  backdrop-filter: blur(14px);
}

.oa-journey-status > span {
  color: var(--coral);
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 10px;
}

.oa-journey-status p {
  margin: 0;
  font-size: 12px;
  font-weight: 760;
  text-transform: uppercase;
}

.oa-journey-status strong {
  max-width: 720px;
  margin-top: 14px;
  display: block;
  font-size: clamp(24px, 2.2vw, 34px);
  line-height: 1.22;
}

.oa-phase-rail {
  position: absolute;
  z-index: 3;
  right: max(48px, calc((100vw - var(--oa-shell)) / 2));
  bottom: 40px;
  left: max(48px, calc((100vw - var(--oa-shell)) / 2));
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  list-style: none;
  background: oklch(0.255 0.035 190 / 0.74);
  color: var(--paper);
  backdrop-filter: blur(14px);
}

.oa-phase-rail li {
  min-height: 52px;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-top: 3px solid transparent;
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    color 180ms ease;
}

.oa-phase-rail li + li {
  border-left: 1px solid oklch(0.975 0.008 120 / 0.16);
}

.oa-phase-rail li.is-active {
  border-top-color: var(--coral);
  background: var(--paper);
  color: var(--ink);
}

.oa-phase-rail span {
  color: var(--lime);
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 9px;
}

.oa-phase-rail strong {
  font-size: 11px;
}

.oa-result {
  padding: 160px 0;
  background:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    var(--canvas);
  background-size: calc(100vw / 12) 100%;
}

.oa-result-grid > .eyebrow {
  margin-bottom: 26px;
}

.oa-result h2 {
  max-width: 1000px;
}

.oa-result-ledger {
  margin-top: 92px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.oa-result-ledger article {
  min-height: 240px;
  padding: 28px 30px 34px;
}

.oa-result-ledger article + article {
  border-left: 1px solid var(--line);
}

.oa-result-ledger span,
.oa-evidence-ledger span {
  color: var(--coral);
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 9px;
}

.oa-result-ledger h3 {
  margin: 54px 0 0;
  font-size: 24px;
  line-height: 1.2;
}

.oa-result-ledger p {
  margin: 18px 0 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.65;
}

.oa-evidence {
  padding: 150px 0;
  background: var(--ink);
  color: var(--paper);
}

.oa-evidence .eyebrow {
  color: var(--lime);
}

.oa-evidence-heading {
  display: grid;
  grid-template-columns: 170px minmax(0, 1.4fr) minmax(280px, 0.8fr);
  gap: 48px;
  align-items: start;
}

.oa-evidence-heading > p:last-child {
  color: oklch(0.8 0.02 145);
}

.oa-evidence-ledger {
  margin-top: 92px;
  border-top: 1px solid var(--line-light);
}

.oa-evidence-ledger article {
  min-height: 150px;
  padding: 26px 0;
  display: grid;
  grid-template-columns: minmax(220px, 0.65fr) minmax(300px, 1.35fr) 220px;
  gap: 40px;
  align-items: start;
  border-bottom: 1px solid var(--line-light);
}

.oa-evidence-ledger article > div {
  display: flex;
  gap: 20px;
  align-items: baseline;
}

.oa-evidence-ledger h3,
.oa-evidence-ledger p {
  margin: 0;
}

.oa-evidence-ledger h3 {
  font-size: 24px;
}

.oa-evidence-ledger p {
  color: oklch(0.86 0.018 145);
  font-size: 15px;
  line-height: 1.65;
}

.oa-evidence-ledger small {
  color: var(--lime);
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 9px;
  line-height: 1.5;
  text-transform: uppercase;
}

.oa-assessment-shade {
  z-index: -2;
  background:
    linear-gradient(
      90deg,
      oklch(0.975 0.008 120 / 0.98) 0%,
      oklch(0.975 0.008 120 / 0.94) 33%,
      oklch(0.975 0.008 120 / 0.54) 57%,
      transparent 80%
    ),
    linear-gradient(180deg, transparent 62%, oklch(0.975 0.008 120 / 0.76));
}

.oa-assessment-copy {
  position: relative;
  z-index: 2;
  padding-top: clamp(170px, 21vh, 240px);
}

.oa-footer {
  min-height: 170px;
  padding: 46px 48px;
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 34px;
  align-items: end;
  background: var(--ink);
  color: oklch(0.72 0.025 145);
  font-size: 9px;
}

.oa-footer picture {
  width: min(260px, 44vw);
}

.oa-footer img {
  width: 100%;
}

.oa-footer p {
  margin: 0;
}

@media (max-width: 1050px) {
  :root {
    --oa-shell: min(calc(100vw - 48px), 900px);
  }

  .desktop-nav {
    gap: 14px;
  }

  .desktop-nav a {
    font-size: 9px;
  }

  .oa-statement-grid,
  .oa-journey-intro .oa-shell,
  .oa-evidence-heading {
    grid-template-columns: 130px minmax(0, 1fr);
  }

  .oa-statement-grid > p:last-child,
  .oa-journey-intro .oa-shell > p:last-child,
  .oa-evidence-heading > p:last-child {
    grid-column: 2;
  }

  .oa-friction-copy {
    width: min(620px, 58vw);
  }

  .oa-evidence-ledger article {
    grid-template-columns: 200px 1fr;
  }

  .oa-evidence-ledger small {
    grid-column: 2;
  }
}

@media (max-width: 760px) {
  :root {
    --oa-shell: calc(100vw - 32px);
  }

  html {
    scroll-padding-top: 64px;
  }

  .site-header {
    height: 64px;
    padding: 0 16px;
    grid-template-columns: 1fr auto auto;
    gap: 8px;
  }

  .brand-lockup {
    width: 44px;
    max-height: 42px;
    object-fit: contain;
  }

  .desktop-nav {
    display: none;
  }

  .header-cta {
    min-height: 36px;
    padding: 0 11px;
    gap: 12px;
  }

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

  .mobile-nav summary {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border: 1px solid var(--line);
    cursor: pointer;
    list-style: none;
  }

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

  .mobile-nav summary span,
  .mobile-nav summary span::before,
  .mobile-nav summary span::after {
    width: 14px;
    height: 1px;
    display: block;
    background: var(--ink);
  }

  .mobile-nav summary span {
    position: relative;
  }

  .mobile-nav summary span::before,
  .mobile-nav summary span::after {
    content: "";
    position: absolute;
    left: 0;
  }

  .mobile-nav summary span::before {
    top: -5px;
  }

  .mobile-nav summary span::after {
    top: 5px;
  }

  .mobile-nav nav {
    position: absolute;
    top: 46px;
    right: 0;
    width: min(290px, calc(100vw - 32px));
    padding: 8px;
    display: grid;
    background: var(--paper);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-spatial);
  }

  .mobile-nav nav a {
    min-height: 44px;
    padding: 0 12px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--line);
    font-size: 11px;
    font-weight: 700;
  }

  .mobile-nav nav a:last-child {
    border-bottom: 0;
  }

  .oa-film-stage {
    min-height: 620px;
  }

  .oa-film-track,
  .oa-film-track-hero,
  .oa-film-track-assessment {
    height: 200svh;
  }

  .oa-film-track-journey {
    height: 390svh;
  }

  .oa-film-media video {
    object-position: 58% center;
  }

  .oa-hero-shade,
  .oa-assessment-shade {
    background:
      linear-gradient(
        180deg,
        oklch(0.975 0.008 120 / 0.98) 0%,
        oklch(0.975 0.008 120 / 0.93) 48%,
        oklch(0.975 0.008 120 / 0.48) 74%,
        oklch(0.975 0.008 120 / 0.78) 100%
      );
  }

  .oa-grid {
    background-size: 56px 56px;
    mask-image: linear-gradient(180deg, black, transparent 74%);
  }

  .oa-hero-copy,
  .oa-assessment-copy {
    padding-top: 102px;
  }

  .oa-hero-copy h1,
  .oa-assessment-copy h2 {
    max-width: 390px;
    font-size: clamp(48px, 15vw, 68px);
  }

  .oa-hero-copy > p:not(.eyebrow),
  .oa-assessment-copy > p:not(.eyebrow) {
    max-width: 380px;
    margin-top: 22px;
    font-size: 16px;
  }

  .oa-hero-outcomes {
    width: calc(100% - 32px);
    margin-bottom: 18px;
    grid-template-columns: 1fr;
  }

  .oa-hero-outcomes div {
    min-height: 42px;
    padding: 8px 10px;
  }

  .oa-hero-outcomes div + div {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .oa-statement,
  .oa-journey-intro,
  .oa-result,
  .oa-evidence {
    padding: 92px 0;
  }

  .oa-statement-grid,
  .oa-journey-intro .oa-shell,
  .oa-evidence-heading {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .oa-statement-grid > p:last-child,
  .oa-journey-intro .oa-shell > p:last-child,
  .oa-evidence-heading > p:last-child {
    grid-column: 1;
  }

  .oa-statement h2,
  .oa-journey-intro h2,
  .oa-result h2,
  .oa-evidence-heading h2 {
    font-size: 44px;
  }

  .oa-friction-shade {
    background:
      linear-gradient(
        180deg,
        transparent 0 18%,
        oklch(0.255 0.035 190 / 0.52) 44%,
        oklch(0.255 0.035 190 / 0.96) 72%
      );
  }

  .oa-friction-copy {
    width: auto;
    margin: 0 16px;
    padding-top: 310px;
  }

  .oa-friction-copy h2 {
    font-size: 42px;
  }

  .oa-friction-copy > p {
    font-size: 15px;
  }

  .oa-journey-status {
    right: 16px;
    bottom: 128px;
    left: 16px;
    min-height: 150px;
    padding: 20px;
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .oa-journey-status strong {
    margin-top: 10px;
    font-size: 23px;
  }

  .oa-phase-rail {
    right: 16px;
    bottom: 18px;
    left: 16px;
  }

  .oa-phase-rail li {
    min-height: 88px;
    padding: 10px 5px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
  }

  .oa-phase-rail strong {
    font-size: 8px;
  }

  .oa-result-ledger {
    margin-top: 54px;
    grid-template-columns: 1fr;
  }

  .oa-result-ledger article {
    min-height: auto;
    padding: 24px 0 30px;
  }

  .oa-result-ledger article + article {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .oa-result-ledger h3 {
    margin-top: 32px;
  }

  .oa-evidence-ledger {
    margin-top: 54px;
  }

  .oa-evidence-ledger article {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .oa-evidence-ledger small {
    grid-column: 1;
  }

  .oa-footer {
    padding: 38px 20px;
    grid-template-columns: 1fr;
    gap: 18px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .oa-film-track,
  .oa-film-track-hero,
  .oa-film-track-journey,
  .oa-film-track-assessment {
    height: auto;
  }

  .oa-film-stage {
    position: relative;
  }

  .oa-phase-rail li {
    border-top-color: var(--coral);
  }
}