/* Parity Advisors ledger system: one coordinate grid, full rules, consistent controls. */
:root {
  --page-gutter: 32px;
  --header-height: 84px;
  --rail-width: 76px;
  --index-column: var(--rail-width);
  --action-column: 214px;
  --system-icon: 24px;
  --control-height: 52px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;
  --space-6: 64px;
  --section-inset: clamp(56px, 6vw, 80px);
  --cell-inset: clamp(24px, 3vw, 40px);
  --visual-safe: clamp(32px, 4vw, 64px);
  --text-meta: 10px;
  --text-body: 16px;
  --text-small: 14px;
  --text-card: clamp(24px, 2vw, 28px);
  --text-feature: clamp(40px, 4.4vw, 64px);
  --text-section: clamp(46px, 5vw, 74px);
  --text-hero: clamp(70px, 7.25vw, 118px);
  --row-height: 128px;
  --card-min-height: 280px;
  --feature-panel-height: 560px;
  --grid-line: #8e8d84;
  --line: var(--grid-line);
  --dark-line: var(--grid-line);
}

[data-parallax] {
  --parallax-y: 0px;
  transform: translate3d(0, var(--parallax-y), 0);
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 10px 14px;
  border: 1px solid var(--carbon);
  background: var(--white);
  color: var(--carbon);
  font: 500 11px/1 var(--mono);
  text-decoration: none;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: -3px;
}

.title-line,
.model-title-line {
  display: block;
}

.overline,
.section-rail-inner,
.panel-marker,
.card-index,
.step-num,
.step-time {
  font-size: var(--text-meta);
}

.overline {
  margin: 0 0 var(--space-3);
  line-height: 1.2;
}

section {
  scroll-margin-top: var(--header-height);
}

.reveal,
.reveal.visible {
  opacity: 1;
  transform: none;
  transition: none;
}

/* Header and shared controls */
.site-header {
  grid-template-columns: 1fr auto;
  padding: 0;
  color: var(--carbon);
  transition: background-color .38s var(--ease), color .38s var(--ease), border-color .38s var(--ease);
}

.brand-lockup,
.footer-lockup {
  display: flex;
  align-items: center;
  min-width: 0;
}

.site-header .brand-lockup {
  align-self: stretch;
  padding: 0 28px;
}

.site-header .brand-lockup,
.site-header .header-descriptor,
.site-header nav,
.site-header nav > a {
  transition: background-color .38s var(--ease), color .38s var(--ease), border-color .38s var(--ease);
}

.brand {
  gap: 0;
  white-space: nowrap;
  color: var(--carbon);
}

.brand-logo {
  display: block;
  height: 28px;
  width: auto;
}

.brand--footer {
  color: var(--white);
}

.brand--footer .brand-logo {
  height: 32px;
}

.header-descriptor,
.footer-brand-row > p {
  margin: 0 0 0 18px;
  padding-left: 18px;
  border-left: 1px solid var(--line);
  color: var(--muted);
  font: 400 12px/1.25 var(--sans);
  letter-spacing: -.01em;
  text-align: left;
  text-transform: none;
  white-space: nowrap;
}

.site-header nav {
  align-self: stretch;
  display: flex;
  align-items: stretch;
  gap: 0;
  border-left: 1px solid var(--line);
}

.site-header nav > a {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 116px;
  height: 100%;
  padding: 0 22px;
  border-right: 1px solid var(--line);
}

.site-header nav > a[data-nav-section]:not(.nav-cta)::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 3px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .3s var(--ease);
}

.site-header nav > a[data-nav-section]:not(.nav-cta):hover::after,
.site-header nav > a[data-nav-section]:not(.nav-cta).is-active::after {
  right: 0;
  transform: scaleX(1);
}

.site-header nav > a[data-nav-section].is-active {
  background: rgba(255, 79, 31, .055);
  color: var(--orange);
}

.site-header[data-theme="dark"] {
  border-color: var(--dark-line);
  background: rgba(18, 18, 16, .96);
  color: var(--white);
}

.site-header[data-theme="dark"] .brand {
  color: var(--white);
}

.site-header[data-theme="dark"] .menu-button span {
  color: var(--orange);
}

.site-header[data-theme="dark"] .header-descriptor {
  border-color: var(--dark-line);
  color: #aaa99f;
}

.site-header[data-theme="dark"] nav,
.site-header[data-theme="dark"] nav > a {
  border-color: var(--dark-line);
}

.site-header[data-theme="dark"] nav > a[data-nav-section].is-active {
  background: rgba(255, 79, 31, .11);
  color: var(--orange);
}

.site-header[data-theme="dark"] .nav-cta {
  background: var(--orange);
  color: var(--carbon);
}

.site-header[data-theme="orange"] {
  border-color: var(--grid-line);
  background: rgba(255, 79, 31, .96);
  color: var(--carbon);
}

.site-header[data-theme="orange"] .brand {
  color: var(--carbon);
}

.site-header[data-theme="orange"] .menu-button span {
  color: var(--carbon);
}

.site-header[data-theme="orange"] .header-descriptor {
  border-color: var(--grid-line);
  color: rgba(18, 18, 16, .68);
}

.site-header[data-theme="orange"] nav,
.site-header[data-theme="orange"] nav > a {
  border-color: var(--grid-line);
}

.site-header[data-theme="orange"] nav > a[data-nav-section].is-active {
  background: var(--carbon);
  color: var(--orange);
}

.site-header[data-theme="orange"] nav > a[data-nav-section]:not(.nav-cta)::after {
  background: var(--carbon);
}

.site-header[data-theme="orange"] .nav-cta {
  background: var(--carbon);
  color: var(--white);
}

.menu-button {
  color: inherit;
}

.nav-cta,
.arrow-link,
.diagnostic-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--control-height);
  padding: 0 18px;
  border: 1px solid var(--grid-line);
  font: 500 11px/1 var(--mono);
  letter-spacing: .05em;
  text-decoration: none;
  text-transform: uppercase;
  transition: background .25s, color .25s, border-color .25s;
}

.nav-cta {
  flex: 0 0 var(--action-column);
  width: var(--action-column);
  min-width: var(--action-column);
  height: 100%;
  min-height: 0;
  gap: 28px;
  padding: 0 22px;
  border: 0;
  border-right: 0;
}

.arrow-link {
  width: min(100%, 220px);
  color: var(--carbon);
}

.diagnostic-cta {
  width: var(--action-column);
  min-height: 58px;
  color: var(--white);
}

.diagnostic-cta:hover {
  width: var(--action-column);
  background: var(--white);
  border-color: var(--grid-line);
  color: var(--carbon);
}

.button-arrow {
  display: inline-grid;
  flex: 0 0 20px;
  width: 20px;
  height: 20px;
  place-items: center;
  font: 400 16px/1 var(--mono);
  letter-spacing: 0;
  transition: transform .25s var(--ease);
}

a:hover > .button-arrow {
  transform: translate(2px, -2px);
}

.arrow-link:hover > .button-arrow {
  transform: translateY(2px);
}

/* Hero */
.hero {
  display: block;
  min-height: 0;
  border-bottom: 1px solid var(--grid-line);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  padding: var(--section-inset) var(--page-gutter);
  border-bottom: 0;
}

.hero-overline {
  margin: 0;
  color: var(--muted);
}

.hero-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  min-width: 0;
  padding: var(--space-6) 0 var(--space-3);
}

.hero h1 {
  max-width: 1120px;
  margin: 0;
  font-size: var(--text-hero);
  line-height: .84;
}

.hero-summary {
  width: min(100%, 620px);
  margin: var(--space-5) 0 0;
  color: var(--carbon);
  font-size: var(--text-body);
  line-height: 1.55;
}

.hero-body .arrow-link {
  margin-top: var(--space-3);
}

.hero-media {
  display: grid;
  place-items: center;
  width: 100%;
  margin: 0;
  min-height: 0;
  aspect-ratio: 3 / 2;
  padding: var(--visual-safe);
  overflow: clip;
  background: transparent;
  border-top: 0;
  contain: paint;
}

.hero-media > img {
  width: auto;
  height: auto;
  max-width: min(100%, 860px);
  max-height: 100%;
  object-fit: contain;
  object-position: center;
  transform: none;
}

.hero-media:hover > img {
  transform: none;
}

.hero-media > img,
.section-visual {
  filter: none;
  image-rendering: pixelated;
}

/* Section frame and sticky ledger index */
.pressure,
.outcomes,
.model,
.why {
  display: grid;
  grid-template-columns: var(--rail-width) minmax(0, 1fr);
  grid-template-rows: auto auto;
  padding: 0;
}

.section-rail {
  grid-column: 1;
  grid-row: 1 / 3;
  display: block;
  min-width: 0;
  padding: 0;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  writing-mode: horizontal-tb;
}

.section-rail-inner {
  position: sticky;
  top: 84px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  height: 280px;
  min-height: 0;
  padding: 28px 22px 28px 26px;
  font: 400 10px var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
}

.section-rail-inner span:first-child {
  color: var(--orange);
}

.section-rail--dark {
  border-color: var(--dark-line);
  color: #a5a49b;
}

.pressure-main,
.outcome-head,
.model-intro,
.why-title-wrap {
  grid-column: 2;
  grid-row: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  align-items: stretch;
  padding: 0;
  max-width: none;
  border-bottom: 1px solid var(--line);
}

.section-heading-copy {
  align-self: center;
  min-width: 0;
  padding: var(--section-inset) var(--page-gutter);
}

.section-heading-copy h2 {
  font-size: var(--text-section);
}

.section-heading-summary {
  max-width: 520px;
  margin: var(--space-4) 0 0;
  color: var(--muted);
  font-size: var(--text-body);
  line-height: 1.55;
}

.section-visual-cell {
  align-self: stretch;
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: clamp(360px, 32vw, 620px);
  padding: var(--visual-safe);
  overflow: clip;
  background: transparent;
  border: 0;
}

.section-visual-cell--dark {
  color: var(--white);
}

.section-visual {
  display: block;
  width: auto;
  max-width: min(100%, 760px);
  height: auto;
  max-height: 100%;
  aspect-ratio: 3 / 2;
  object-fit: contain;
  object-position: center;
  border: 0;
}

.pressure-grid,
.outcome-switcher,
.model-steps,
.why-grid {
  grid-column: 2;
  grid-row: 2;
}

.section-icon,
.step-icon,
.outcome-icon,
.outcome-tab img {
  width: var(--system-icon);
  height: var(--system-icon);
  flex: none;
  object-fit: contain;
}

.card-index {
  color: var(--orange);
  font: 400 var(--text-meta) var(--mono);
}

/* 01: structural pressure */
.pressure-main {
  padding: 0;
}

.pressure h2 {
  max-width: 1320px;
}

.pressure-lede {
  margin-top: var(--space-4);
  font-size: clamp(30px, 3.2vw, 44px);
}

.pressure-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  border-top: 0;
  border-bottom: 1px solid var(--line);
}

.pressure-grid article {
  display: grid;
  grid-template-rows: auto 56px minmax(64px, 1fr) auto;
  min-height: var(--card-min-height);
  padding: var(--space-3) var(--page-gutter) var(--space-4);
  border-right: 1px solid var(--line);
}

.pressure-grid article:last-child {
  border-right: 0;
}

.pressure-grid .section-icon {
  align-self: center;
  margin: 0;
  opacity: .82;
}

.pressure-grid h3 {
  align-self: end;
  margin: 0 0 var(--space-2);
  font-size: var(--text-card);
}

.pressure-grid p,
.why-grid p {
  margin: 0;
  font-size: var(--text-small);
  line-height: 1.55;
}

/* 02: three full-cell outcome rows */
.outcomes {
  background: var(--carbon);
  color: var(--white);
}

.outcome-head {
  padding: 0;
  border-color: var(--dark-line);
}

.outcome-switcher {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--action-column);
  gap: 0;
  align-items: start;
  padding: 0;
  border: 0;
}

.outcome-scenes {
  min-width: 0;
  padding: 0;
  border-right: 1px solid var(--dark-line);
}

.outcome-panel,
.outcome-panel[hidden] {
  position: relative;
  display: grid;
  grid-template-columns: var(--index-column) minmax(280px, 1fr) minmax(260px, .58fr);
  gap: 0;
  align-items: stretch;
  min-height: var(--feature-panel-height);
  padding: 0;
  overflow: visible;
  border: 0;
  border-bottom: 1px solid var(--dark-line);
  animation: none;
}

.panel-marker {
  align-self: stretch;
  display: block;
  padding: var(--space-4) 26px;
  border-right: 1px solid var(--dark-line);
  color: var(--orange);
  font: 400 10px var(--mono);
}

.panel-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: none;
  padding: var(--section-inset) var(--cell-inset);
  border-right: 1px solid var(--dark-line);
}

.outcome-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.outcome-label .overline {
  margin: 0;
}

.outcome-label .outcome-icon {
  filter: invert(1);
  opacity: .88;
}

.panel-copy h3 {
  max-width: 660px;
  margin: 0 0 var(--space-3);
  font-size: var(--text-feature);
  font-weight: 500;
  letter-spacing: -.06em;
  line-height: .95;
}

.panel-copy > p:last-child {
  max-width: 560px;
  margin: 0;
  color: #aaa99f;
  font-size: var(--text-body);
  line-height: 1.55;
}

.outcome-panel ul {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-2);
  margin: 0;
  padding: 56px clamp(28px, 3vw, 44px);
  border: 0;
}

.outcome-panel li {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  margin: 0;
  padding: 0;
  border: 0;
}

.outcome-panel li::before {
  content: "✓";
  color: var(--orange);
  font: 500 14px/1 var(--mono);
}

.outcome-tabs {
  position: sticky;
  top: 100px;
  z-index: 4;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 0;
  border-bottom: 1px solid var(--dark-line);
  background: rgba(18, 18, 16, .96);
  backdrop-filter: blur(12px);
  inline-size: var(--action-column);
}

.outcome-tab,
.outcome-tab + button {
  display: grid;
  grid-template-columns: 24px 24px 1fr;
  gap: 12px;
  align-items: center;
  height: 84px;
  padding: 0 18px;
  border: 0;
  border-bottom: 1px solid var(--dark-line);
  background: transparent;
  color: #8e8d84;
  text-decoration: none;
  transition: color .25s, background .25s;
}

.outcome-tab:last-child {
  border-bottom: 0;
}

.outcome-tab span {
  margin: 0;
  font: 400 9px var(--mono);
}

.outcome-tab i {
  font-size: var(--text-body);
  font-style: normal;
  letter-spacing: -.04em;
}

.outcome-tab img {
  filter: invert(1);
  opacity: .55;
}

.outcome-tab.is-active {
  background: var(--orange);
  color: var(--carbon);
}

.outcome-tab.is-active img {
  filter: none;
  opacity: 1;
}

/* 03: delivery model */
.model-intro {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  align-items: stretch;
  padding: 0;
}

.model-intro h2 {
  max-width: 980px;
  font-size: var(--text-section);
}

.model-title-line {
  width: max-content;
  max-width: 100%;
  white-space: nowrap;
}

.model-steps {
  margin: 0;
  padding: 0;
  overflow: hidden;
  border-top: 0;
}

.model-steps li {
  isolation: isolate;
  display: grid;
  grid-template-columns: var(--index-column) minmax(210px, 280px) minmax(260px, 1fr) var(--action-column);
  column-gap: 0;
  align-items: center;
  min-height: var(--row-height);
  padding: 0;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.model-steps li::before {
  inset: 0 auto 0 0;
  right: auto;
  z-index: -1;
  width: var(--progress);
  background: linear-gradient(90deg, rgba(255, 79, 31, .22), rgba(255, 79, 31, .07));
  transition: background .3s;
}

.model-steps li:hover {
  padding-left: 0;
}

.model-steps li:hover::before {
  right: auto;
  width: var(--progress);
  background: linear-gradient(90deg, rgba(255, 79, 31, .36), rgba(255, 79, 31, .09));
}

.step-num {
  align-self: stretch;
  display: flex;
  align-items: center;
  padding: 0 26px;
  border-right: 1px solid var(--grid-line);
}

.step-name {
  align-self: stretch;
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
  padding: var(--space-3) var(--cell-inset);
  border-right: 1px solid var(--grid-line);
}

.step-name .step-icon {
  opacity: .78;
}

.model-steps p,
.step-time {
  align-self: stretch;
  display: flex;
  align-items: center;
  margin: 0;
}

.model-steps h3 {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: var(--text-card);
  line-height: 1;
}

.model-steps p {
  max-width: none;
  padding: var(--space-3) var(--cell-inset);
  border-right: 1px solid var(--grid-line);
  font-size: var(--text-small);
  line-height: 1.5;
  text-align: left;
}

.step-time {
  justify-content: flex-start;
  padding: 20px 22px;
  white-space: nowrap;
  text-align: left;
}

/* 04: differentiation */
.why-title-wrap {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding: 0;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  border: 0;
}

.why-grid article {
  display: grid;
  grid-template-rows: auto 56px minmax(64px, 1fr) auto;
  min-height: var(--card-min-height);
  padding: var(--space-3) var(--page-gutter) var(--space-4);
  border: 0;
  border-right: 1px solid var(--grid-line);
  border-bottom: 1px solid var(--grid-line);
}

.why-grid article:nth-child(2n) {
  border-right: 0;
}

.why .section-rail {
  border-bottom-color: var(--grid-line);
}

.why-grid .section-icon {
  align-self: center;
  margin: 0;
}

.why-grid h3 {
  align-self: end;
  margin: 0 0 var(--space-2);
  font-size: var(--text-card);
}

.why-grid p {
  margin: 0;
}

/* Conversion and footer */
.diagnostic {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  min-height: 0;
  padding: 0;
  border-bottom: 1px solid var(--grid-line);
}

.diagnostic-copy {
  align-self: center;
  padding: var(--section-inset) var(--page-gutter);
}

.diagnostic-copy > p:not(.overline) {
  max-width: 600px;
  margin: var(--space-4) 0;
  font-size: var(--text-body);
  line-height: 1.55;
}

.diagnostic-copy h2 {
  font-size: var(--text-section);
}

.section-visual-cell--diagnostic {
  border-color: var(--grid-line);
}

.section-visual-cell--diagnostic .section-visual {
  max-width: min(100%, 760px);
}

.footer {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  padding: 44px 0;
  border-bottom: 1px solid var(--dark-line);
}

.footer-lockup {
  flex-direction: column;
  align-items: flex-start;
  margin-left: var(--page-gutter);
}

.footer-brand-row {
  display: flex;
  align-items: center;
  min-width: 0;
}

.brand--footer {
  gap: 0;
  font-size: 22px;
  color: var(--white);
}

.footer-brand-row > p {
  border-color: var(--dark-line);
  color: #aaa99f;
}

.footer-copyright {
  margin-top: 12px;
  color: #77766f;
  font: 400 9px var(--mono);
  text-transform: uppercase;
}

.footer-contact {
  grid-column: 2;
  margin-right: var(--page-gutter);
}

.footer-contact a {
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-contact a .button-arrow {
  margin: 0;
  color: inherit;
  font: 400 16px/1 var(--mono);
  letter-spacing: 0;
  text-transform: none;
}

@media (max-width: 1100px) {
  .header-descriptor {
    display: none;
  }

  .outcome-switcher {
    grid-template-columns: minmax(0, 1fr) var(--action-column);
  }

  .outcome-panel,
  .outcome-panel[hidden] {
    grid-template-columns: var(--index-column) minmax(0, 1fr);
    min-height: 0;
  }

  .panel-marker {
    grid-row: 1 / 3;
  }

  .panel-copy {
    grid-column: 2;
    padding-bottom: var(--space-3);
    border-right: 0;
  }

  .outcome-panel ul {
    grid-column: 2;
    min-height: 0;
    justify-content: flex-start;
    gap: var(--space-2);
    padding: 0 var(--cell-inset) var(--space-5);
  }

  .model-steps li {
    grid-template-columns: var(--index-column) minmax(190px, 240px) minmax(180px, 1fr) var(--action-column);
    column-gap: 0;
  }
}

@media (max-width: 980px) {
  :root {
    --text-hero: clamp(60px, 11vw, 96px);
  }

  .menu-button {
    min-height: 40px;
  }

  .site-header nav .nav-cta {
    flex: 1 1 auto;
    width: 100%;
    min-width: 0;
    height: 56px;
    margin: 0;
    padding: 0 18px;
  }

  .site-header nav {
    align-self: auto;
    display: none;
    justify-self: stretch;
    right: 0;
    left: 0;
    width: 100%;
    height: auto;
    padding: 0;
    border-left: 0;
  }

  .site-header nav.open {
    display: flex;
  }

  .site-header[data-theme="dark"] nav {
    background: rgba(18, 18, 16, .985);
  }

  .site-header[data-theme="orange"] nav {
    background: rgba(255, 79, 31, .985);
  }

  .site-header nav > a {
    justify-content: space-between;
    width: 100%;
    min-width: 0;
    height: 54px;
    padding: 0 28px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .hero-media {
    aspect-ratio: 3 / 2;
  }

  .hero-media > img,
  .section-visual,
  .section-visual-cell--diagnostic .section-visual {
    max-width: min(calc(100% - var(--visual-safe)), 760px);
  }

  .pressure-main,
  .outcome-head,
  .model-intro,
  .why-title-wrap,
  .diagnostic {
    grid-template-columns: minmax(0, 1fr);
  }

  .section-visual-cell {
    height: auto;
    min-height: 0;
    aspect-ratio: 3 / 2;
    padding: var(--visual-safe);
    border: 0;
  }

  .model-steps li {
    grid-template-columns: var(--index-column) minmax(190px, 240px) minmax(0, 1fr);
  }

  .step-time {
    display: none;
  }
}

@media (max-width: 720px) {
  :root {
    --page-gutter: 18px;
    --rail-width: 100%;
    --index-column: 44px;
    --section-inset: 48px;
    --cell-inset: 18px;
    --visual-safe: 24px;
    --text-hero: clamp(44px, 12vw, 52px);
    --text-section: clamp(38px, 10.2vw, 44px);
    --text-feature: clamp(38px, 10.5vw, 46px);
    --card-min-height: 248px;
  }

  .site-header {
    height: 70px;
  }

  .site-header .brand-lockup {
    padding: 0 18px;
  }

  .brand-logo {
    height: 24px;
  }

  .menu-button {
    margin-right: 18px;
  }

  .site-header nav > a {
    padding: 0 18px;
  }

  .header-descriptor {
    display: none;
  }

  .hero-copy {
    padding: var(--section-inset) var(--page-gutter);
  }

  .hero-body {
    padding: var(--space-5) 0 0;
  }

  .hero h1 .title-line {
    width: max-content;
    max-width: 100%;
    white-space: nowrap;
  }

  .hero-summary {
    margin-top: var(--space-4);
    font-size: var(--text-body);
  }

  .arrow-link {
    width: 100%;
  }

  .hero-media {
    aspect-ratio: 3 / 2;
  }

  .pressure,
  .outcomes,
  .model,
  .why {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto auto auto;
  }

  .section-rail {
    position: sticky;
    top: 70px;
    z-index: 20;
    grid-column: 1;
    grid-row: 1;
    height: 44px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    background: rgba(241, 240, 233, .96);
    backdrop-filter: blur(12px);
  }

  .section-rail--dark {
    border-color: var(--dark-line);
    background: rgba(18, 18, 16, .96);
  }

  .section-rail-inner {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    height: 44px;
    min-height: 0;
    padding: 0 var(--page-gutter);
    writing-mode: horizontal-tb;
  }

  .pressure-main,
  .outcome-head,
  .model-intro,
  .why-title-wrap {
    grid-column: 1;
    grid-row: 2;
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
    min-width: 0;
  }

  .pressure-grid,
  .outcome-switcher,
  .model-steps,
  .why-grid {
    grid-column: 1;
    grid-row: 3;
  }

  .pressure-main,
  .outcome-head,
  .why-title-wrap {
    padding: 0;
  }

  .section-heading-copy {
    padding: var(--section-inset) var(--page-gutter);
  }

  .section-heading-summary {
    margin-top: var(--space-3);
  }

  .section-visual-cell {
    height: auto;
    min-height: 0;
    aspect-ratio: 3 / 2;
    padding: var(--visual-safe);
    border: 0;
  }

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

  .pressure-grid article {
    min-height: var(--card-min-height);
    padding: var(--space-3) var(--page-gutter) var(--space-4);
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .pressure-grid article:last-child {
    border-bottom: 0;
  }

  .outcome-switcher {
    display: block;
  }

  .outcome-scenes {
    padding-right: 72px;
    border-right: 0;
  }

  .outcome-panel,
  .outcome-panel[hidden] {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .panel-marker {
    grid-column: 1;
    grid-row: auto;
    padding: var(--space-3) var(--page-gutter);
    border-right: 0;
    border-bottom: 1px solid var(--dark-line);
  }

  .panel-copy {
    grid-column: 1;
    padding: var(--section-inset) var(--page-gutter) var(--space-3);
    border-right: 0;
  }

  .outcome-panel ul {
    grid-column: 1;
    min-height: 0;
    gap: var(--space-2);
    padding: 0 0 var(--space-5);
    border-top: 0;
  }

  .outcome-panel li {
    padding: 0 var(--page-gutter);
  }

  .outcome-tabs {
    position: sticky;
    top: auto;
    bottom: 16px;
    width: 72px;
    inline-size: 72px;
    margin: -84px 0 0 auto;
    border: 1px solid var(--dark-line);
    border-right: 0;
  }

  .outcome-tab,
  .outcome-tab + button {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    height: 72px;
    padding: 0;
  }

  .outcome-tab span {
    display: none;
  }

  .outcome-tab i {
    font: 500 9px var(--mono);
    letter-spacing: .04em;
    text-transform: uppercase;
  }

  .model-intro {
    gap: 0;
    padding: 0;
  }

  .model-intro h2 {
    letter-spacing: -.065em;
  }

  .model-title-line {
    width: max-content;
    max-width: 100%;
    white-space: nowrap;
  }

  .model-steps li {
    grid-template-columns: var(--index-column) minmax(0, 1fr);
    grid-template-rows: auto auto;
    gap: 0;
    min-height: 0;
    padding: 0;
  }

  .model-steps li:hover {
    padding-left: 0;
  }

  .step-num {
    grid-row: 1 / 3;
    padding: 0 14px;
  }

  .step-name {
    grid-column: 2;
    gap: var(--space-2);
    padding: var(--space-3) var(--page-gutter) var(--space-2);
    border-right: 0;
  }

  .model-steps p {
    grid-column: 2;
    align-self: start;
    min-height: 0;
    padding: 0 var(--page-gutter) var(--space-3);
    border-right: 0;
    font-size: var(--text-small);
  }

  .why-grid {
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
    min-width: 0;
  }

  .why-grid article,
  .why-grid article:nth-child(2n) {
    min-height: var(--card-min-height);
    padding: var(--space-3) var(--page-gutter) var(--space-4);
    border-right: 0;
    border-bottom: 1px solid var(--grid-line);
  }

  .diagnostic {
    grid-template-columns: 1fr;
    min-height: 0;
    padding: 0;
  }

  .diagnostic-copy {
    padding: var(--section-inset) var(--page-gutter);
  }

  .footer {
    grid-template-columns: 1fr;
    padding: 44px 0;
  }

  .footer-lockup {
    align-items: flex-start;
    margin: 0 var(--page-gutter);
  }

  .footer-brand-row > p {
    margin-left: 14px;
    padding-left: 14px;
    white-space: normal;
  }

  .footer-contact {
    grid-column: 1;
    margin: 0 var(--page-gutter);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-media > img,
  .outcome-tab,
  .button-arrow {
    transition: none;
  }

  [data-parallax] {
    transform: none !important;
  }
}

@media (min-width: 981px) {
  .hero {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    min-height: clamp(620px, calc(100svh - var(--header-height)), 860px);
  }

  .hero-copy {
    min-width: 0;
    min-height: inherit;
    padding: var(--section-inset) var(--page-gutter);
  }

  .hero h1 {
    max-width: 780px;
  }

  .hero-media {
    width: auto;
    min-height: inherit;
    aspect-ratio: auto;
    border-left: 0;
  }
}