:root {
  color-scheme: light;
  --black: #050505;
  --white: #ffffff;
  --surface: #f4f4f2;
  --border: #d7d7d3;
  --muted: #666662;
  --quiet: #8a8a84;
  --page: 1280px;
  --gutter: 48px;
  --header-height: 76px;
  --section-nav-height: 52px;
  --font-sans: Inter, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  overflow-x: clip;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + var(--section-nav-height) + 20px);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: clip;
  background: var(--white);
  color: var(--black);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0;
}

body.menu-open {
  overflow: hidden;
}

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

button,
input,
select {
  color: inherit;
  font: inherit;
  letter-spacing: 0;
}

button,
select {
  cursor: pointer;
}

img,
video {
  display: block;
  max-width: 100%;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
video:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

.page-width {
  width: min(calc(100% - (var(--gutter) * 2)), var(--page));
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 300;
  padding: 10px 14px;
  border: 1px solid var(--black);
  background: var(--white);
  transform: translateY(-150%);
}

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

.utility-strip {
  display: grid;
  min-height: 32px;
  place-items: center;
  padding: 5px var(--gutter);
  background: var(--black);
  color: var(--white);
  font: 500 11px/1.25 var(--font-mono);
  text-align: center;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  border-bottom: 1px solid var(--black);
  background: var(--white);
}

.site-header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 36px;
  align-items: center;
  width: min(calc(100% - (var(--gutter) * 2)), 1360px);
  height: 100%;
  margin-inline: auto;
}

.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  min-height: 44px;
  font-size: 17px;
  font-weight: 650;
}

.brand img {
  width: 34px;
  height: 34px;
  object-fit: contain;
  filter: grayscale(1) contrast(1.2);
}

.header-navigation {
  display: flex;
  gap: 36px;
  align-items: center;
  justify-content: space-between;
  min-width: 0;
}

.main-nav {
  display: flex;
  gap: 28px;
  align-items: center;
}

.main-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  border-bottom: 1px solid transparent;
  font-size: 14px;
  transition: border-color 150ms ease;
}

.main-nav a:hover {
  border-color: var(--black);
}

.header-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.header-search {
  display: flex;
  width: 240px;
  height: 46px;
  border: 1px solid var(--border);
  background: var(--white);
}

.header-search:focus-within {
  border-color: var(--black);
}

.header-search input {
  width: 100%;
  min-width: 0;
  padding: 0 12px;
  border: 0;
  outline: 0;
  background: transparent;
  font-size: 13px;
}

.header-search button {
  min-width: 62px;
  border: 0;
  border-left: 1px solid var(--border);
  background: var(--white);
  font: 500 11px/1 var(--font-mono);
}

.header-search button:hover {
  background: var(--surface);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid var(--black);
  border-radius: 2px;
  font-size: 14px;
  font-weight: 600;
  transition: background-color 150ms ease, color 150ms ease;
}

.button--dark {
  background: var(--black);
  color: var(--white);
}

.button--dark:hover {
  background: var(--white);
  color: var(--black);
}

.button--outline {
  background: var(--white);
  color: var(--black);
}

.button--outline:hover {
  background: var(--black);
  color: var(--white);
}

.button--light {
  border-color: var(--white);
  background: var(--white);
  color: var(--black);
}

.button--light:hover {
  background: var(--black);
  color: var(--white);
}

.header-cta {
  white-space: nowrap;
}

.menu-button {
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 1px solid var(--black);
  background: var(--white);
}

.menu-button span {
  display: block;
  width: 20px;
  height: 1px;
  margin: 5px auto;
  background: var(--black);
  transition: transform 150ms ease;
}

.menu-button[aria-expanded="true"] span:first-child {
  transform: translateY(3px) rotate(45deg);
}

.menu-button[aria-expanded="true"] span:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

.section-nav {
  position: sticky;
  top: var(--header-height);
  z-index: 90;
  height: var(--section-nav-height);
  border-bottom: 1px solid var(--black);
  background: var(--white);
}

.section-nav__inner {
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr));
  width: min(100%, 1360px);
  height: 100%;
  margin-inline: auto;
  overflow-x: auto;
  scrollbar-width: none;
}

.section-nav__inner::-webkit-scrollbar {
  display: none;
}

.section-nav a {
  display: grid;
  min-width: 120px;
  place-items: center;
  border-right: 1px solid var(--black);
  background: var(--white);
  font: 500 12px/1 var(--font-mono);
  transition: background-color 150ms ease, color 150ms ease;
}

.section-nav a:first-child {
  border-left: 1px solid var(--black);
}

.section-nav a:hover,
.section-nav a.is-active {
  background: var(--black);
  color: var(--white);
}

.intro {
  padding: 42px 0 24px;
}

.intro-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, 0.85fr);
  min-height: 520px;
  overflow: hidden;
  border: 1px solid var(--black);
  border-radius: 4px;
}

.intro-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 52px;
}

.eyebrow,
.section-index {
  margin: 0 0 18px;
  color: var(--muted);
  font: 500 11px/1.3 var(--font-mono);
  letter-spacing: 0;
  text-transform: uppercase;
}

.intro h1 {
  max-width: 680px;
  margin: 0;
  font-size: 64px;
  font-weight: 560;
  line-height: 1.02;
  letter-spacing: 0;
}

.intro-copy__lede {
  max-width: 620px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.6;
}

.intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.boundary {
  margin: 28px 0 0;
  color: var(--quiet);
  font: 12px/1.5 var(--font-mono);
}

.intro-product {
  display: grid;
  grid-template-rows: 1fr auto;
  place-items: center;
  min-width: 0;
  padding: 24px;
  border-left: 1px solid var(--black);
  background: var(--surface);
}

.app-capture {
  display: grid;
  height: 430px;
  aspect-ratio: 1206 / 2622;
  overflow: hidden;
  border: 1px solid var(--black);
  border-radius: 6px;
  background: var(--black);
}

.app-capture video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: grayscale(1);
}

.intro-product > p {
  margin: 14px 0 0;
  color: var(--muted);
  font: 11px/1.4 var(--font-mono);
  text-align: center;
}

.capability-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 32px;
  border: 1px solid var(--black);
}

.capability-row article {
  min-width: 0;
  padding: 24px;
  border-right: 1px solid var(--black);
}

.capability-row article:last-child {
  border-right: 0;
}

.capability-row span,
.workflow li span,
.ledger span,
.context-chat span,
.resource-links span {
  color: var(--muted);
  font: 500 11px/1.3 var(--font-mono);
  text-transform: uppercase;
}

.capability-row p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.product-section {
  padding: 104px 0;
  scroll-margin-top: calc(var(--header-height) + var(--section-nav-height));
}

.product-section--gray {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 72px;
  align-items: end;
  margin-bottom: 48px;
}

.section-heading h2,
.workflow h2,
.module-heading h2,
.final-cta h2 {
  max-width: 760px;
  margin: 0;
  font-size: 46px;
  font-weight: 560;
  line-height: 1.08;
  letter-spacing: 0;
}

.section-heading > p,
.module-heading > p:not(.section-index) {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.65;
}

.calculator-shell {
  display: grid;
  grid-template-columns: minmax(360px, 0.88fr) minmax(480px, 1.12fr);
  overflow: hidden;
  border: 1px solid var(--black);
  border-radius: 4px;
  background: var(--white);
}

.calculator-controls {
  padding: 32px;
}

.calculator-controls__head,
.results-heading,
.syringe-guide figcaption,
.ledger__head {
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
}

.calculator-controls__head > div,
.results-heading {
  display: grid;
  gap: 4px;
}

.calculator-controls__head span,
.results-heading span {
  color: var(--muted);
  font: 500 11px/1.3 var(--font-mono);
  text-transform: uppercase;
}

.calculator-controls__head strong {
  font-size: 17px;
  font-weight: 600;
}

.calculator-controls__head button {
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--border);
  background: var(--white);
  font-size: 13px;
}

.calculator-controls__head button:hover {
  border-color: var(--black);
  background: var(--surface);
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 34px;
}

.field {
  display: grid;
  gap: 9px;
  min-width: 0;
}

.field > span:first-child {
  color: var(--muted);
  font-size: 13px;
}

.field__input {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  min-height: 52px;
  border: 1px solid var(--border);
  background: var(--white);
}

.field__input:focus-within {
  border-color: var(--black);
}

.field__input input {
  width: 100%;
  min-width: 0;
  padding: 0 14px;
  border: 0;
  outline: 0;
  background: transparent;
  font: 500 16px/1 var(--font-mono);
}

.field__input b {
  min-width: 54px;
  padding: 18px 12px;
  border-left: 1px solid var(--border);
  color: var(--muted);
  font: 500 11px/1 var(--font-mono);
  text-align: center;
}

.unit-control {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-top: 20px;
  border: 1px solid var(--black);
}

.unit-control button {
  min-height: 46px;
  border: 0;
  background: var(--white);
  font: 600 12px/1 var(--font-mono);
}

.unit-control button + button {
  border-left: 1px solid var(--black);
}

.unit-control button.is-active,
.unit-control button:hover {
  background: var(--black);
  color: var(--white);
}

.calculator-note {
  margin: 24px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.calculator-note.is-error {
  color: var(--black);
  font-weight: 600;
}

.calculator-results {
  padding: 32px;
  border-left: 1px solid var(--black);
  background: var(--surface);
}

.results-heading {
  grid-template-columns: 1fr auto;
  min-height: 48px;
}

.results-heading strong {
  font: 600 22px/1 var(--font-mono);
}

.result-table {
  width: 100%;
  margin-top: 20px;
  border-collapse: collapse;
  border-top: 1px solid var(--black);
  font-size: 14px;
}

.result-table th,
.result-table td {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.result-table th {
  color: var(--muted);
  font-weight: 400;
  text-align: left;
}

.result-table td {
  font: 600 13px/1.4 var(--font-mono);
  text-align: right;
}

.syringe-guide {
  margin: 26px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--black);
}

.syringe-guide figcaption span {
  color: var(--muted);
  font-size: 13px;
}

.syringe-guide figcaption strong {
  font: 600 14px/1.3 var(--font-mono);
}

.syringe-media {
  display: grid;
  margin-top: 16px;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  place-items: center;
  border: 1px solid var(--black);
  background: var(--white);
}

.syringe-media video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: grayscale(1) contrast(1.08);
}

.syringe-guide > p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.catalog-toolbar {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto 180px;
  gap: 14px;
  align-items: center;
  padding: 14px 0;
  border-top: 1px solid var(--black);
  border-bottom: 1px solid var(--black);
}

.catalog-search input,
.catalog-sort select {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: 0;
  outline: 0;
  background: var(--white);
  font-size: 13px;
}

.catalog-search input:focus,
.catalog-sort select:focus {
  border-color: var(--black);
}

.catalog-filters {
  display: flex;
  overflow-x: auto;
  border: 1px solid var(--black);
  scrollbar-width: none;
}

.catalog-filters::-webkit-scrollbar {
  display: none;
}

.catalog-filters button {
  flex: 0 0 auto;
  min-height: 46px;
  padding: 0 13px;
  border: 0;
  border-right: 1px solid var(--black);
  background: var(--white);
  font-size: 12px;
}

.catalog-filters button:last-child {
  border-right: 0;
}

.catalog-filters button:hover,
.catalog-filters button.is-active {
  background: var(--black);
  color: var(--white);
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.catalog-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--white);
  transition: border-color 150ms ease;
}

.catalog-card:hover {
  border-color: var(--black);
}

.catalog-card__media {
  display: grid;
  aspect-ratio: 1 / 0.9;
  overflow: hidden;
  place-items: center;
  border-bottom: 1px solid var(--border);
  background: var(--white);
}

.catalog-card__media img {
  width: 78%;
  height: 78%;
  object-fit: contain;
  filter: grayscale(1) contrast(1.05);
}

.catalog-card__body {
  display: flex;
  gap: 14px;
  flex: 1;
  flex-direction: column;
  padding: 18px;
}

.catalog-card__meta {
  display: flex;
  gap: 12px;
  justify-content: space-between;
  color: var(--muted);
  font: 500 10px/1.3 var(--font-mono);
  text-transform: uppercase;
}

.catalog-card h3 {
  min-height: 48px;
  margin: 0;
  overflow-wrap: anywhere;
  font-size: 19px;
  font-weight: 580;
  line-height: 1.3;
}

.catalog-card__strength {
  margin: 0;
  color: var(--muted);
  font: 12px/1.4 var(--font-mono);
}

.catalog-card__action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 46px;
  margin-top: auto;
  padding: 0 13px;
  border: 1px solid var(--black);
  background: var(--white);
  font-size: 13px;
  font-weight: 600;
  text-align: left;
}

.catalog-card__action:hover {
  background: var(--black);
  color: var(--white);
}

.catalog-empty,
.catalog-note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.workflow {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 70px;
  align-items: start;
  padding-top: 96px;
  padding-bottom: 96px;
}

.workflow ol {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border: 1px solid var(--black);
  list-style: none;
}

.workflow li {
  min-height: 180px;
  padding: 24px;
  border-right: 1px solid var(--black);
}

.workflow li:last-child {
  border-right: 0;
}

.workflow li p {
  margin: 46px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.ledger {
  overflow: hidden;
  border: 1px solid var(--black);
  border-radius: 4px;
}

.ledger__head {
  padding: 24px 28px;
  background: var(--black);
  color: var(--white);
}

.ledger__head > div {
  display: grid;
  gap: 5px;
}

.ledger__head > div:last-child {
  text-align: right;
}

.ledger__head span {
  color: var(--border);
}

.ledger__head strong {
  font-size: 18px;
  font-weight: 560;
}

.ledger__summary {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-bottom: 1px solid var(--black);
  background: var(--surface);
}

.ledger__summary > div {
  display: grid;
  gap: 18px;
  min-width: 0;
  padding: 22px;
  border-right: 1px solid var(--border);
}

.ledger__summary > div:last-child {
  border-right: 0;
}

.ledger__summary strong {
  overflow-wrap: anywhere;
  font: 600 14px/1.4 var(--font-mono);
}

.ledger__table {
  padding: 0 28px;
}

.ledger__row {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 20px;
  align-items: center;
  min-height: 68px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.ledger__row--labels {
  min-height: 48px;
  color: var(--muted);
  font: 500 10px/1 var(--font-mono);
  text-transform: uppercase;
}

.ledger__row strong {
  font-weight: 580;
}

.ledger__note {
  margin: 0;
  padding: 18px 28px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.resources__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--black);
  background: var(--white);
}

.pepai-module,
.learn-index {
  min-width: 0;
  padding: 38px;
}

.pepai-module {
  border-right: 1px solid var(--black);
}

.module-heading h2 {
  font-size: 38px;
}

.module-heading > p:not(.section-index) {
  margin-top: 18px;
  font-size: 15px;
}

.context-chat {
  margin-top: 32px;
  border-top: 1px solid var(--black);
}

.context-chat__context,
.context-chat__row {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}

.context-chat__context strong {
  font: 600 12px/1.5 var(--font-mono);
}

.context-chat__row p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.resource-links {
  margin-top: 32px;
  border-top: 1px solid var(--black);
}

.resource-links a {
  display: grid;
  grid-template-columns: 128px 1fr auto;
  gap: 16px;
  align-items: center;
  min-height: 78px;
  border-bottom: 1px solid var(--border);
}

.resource-links strong {
  font-size: 14px;
  font-weight: 580;
}

.resource-links b {
  font-size: 18px;
  font-weight: 400;
  transition: transform 150ms ease;
}

.resource-links a:hover b {
  transform: translateX(4px);
}

.final-cta {
  padding: 72px 0;
  background: var(--black);
  color: var(--white);
}

.final-cta__inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 80px;
  align-items: end;
}

.final-cta .eyebrow {
  color: var(--border);
}

.final-cta h2 {
  font-size: 48px;
}

.final-cta__inner > div:last-child {
  display: grid;
  gap: 22px;
  justify-items: start;
}

.final-cta__inner p:not(.eyebrow) {
  margin: 0;
  color: var(--border);
  font-size: 16px;
}

.site-footer {
  border-top: 1px solid var(--black);
  background: var(--white);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.35fr 0.7fr 0.7fr 1.25fr;
  gap: 56px;
  padding-top: 48px;
  padding-bottom: 42px;
}

.footer-brand > p,
.footer-boundary {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.site-footer nav {
  display: grid;
  gap: 10px;
  align-content: start;
  font-size: 13px;
}

.site-footer nav strong {
  margin-bottom: 4px;
  font: 500 11px/1.3 var(--font-mono);
  text-transform: uppercase;
}

.site-footer nav a {
  color: var(--muted);
}

.site-footer nav a:hover {
  color: var(--black);
  text-decoration: underline;
}

.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 18px;
  padding-bottom: 22px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font: 11px/1.4 var(--font-mono);
}

@media (max-width: 1180px) {
  :root {
    --gutter: 32px;
  }

  .site-header__inner {
    gap: 24px;
  }

  .header-navigation,
  .main-nav {
    gap: 20px;
  }

  .header-search {
    width: 190px;
  }

  .intro h1 {
    font-size: 56px;
  }

  .section-heading h2,
  .workflow h2,
  .final-cta h2 {
    font-size: 42px;
  }

  .calculator-shell {
    grid-template-columns: minmax(330px, 0.9fr) minmax(430px, 1.1fr);
  }

  .catalog-toolbar {
    grid-template-columns: minmax(220px, 1fr) 180px;
  }

  .catalog-filters {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-self: start;
  }

  .catalog-sort {
    grid-column: 2;
    grid-row: 1;
  }
}

@media (max-width: 960px) {
  :root {
    --gutter: 28px;
    --header-height: 70px;
  }

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

  .menu-button {
    display: block;
  }

  .header-navigation {
    position: fixed;
    top: var(--header-height);
    right: 0;
    left: 0;
    z-index: 110;
    display: grid;
    gap: 20px;
    padding: 22px var(--gutter) 28px;
    border-bottom: 1px solid var(--black);
    background: var(--white);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 150ms ease, transform 150ms ease;
  }

  .header-navigation.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .main-nav {
    display: grid;
    gap: 0;
  }

  .main-nav a {
    border-bottom: 1px solid var(--border);
  }

  .header-actions {
    align-items: stretch;
  }

  .header-search {
    width: min(100%, 360px);
  }

  .intro-panel {
    grid-template-columns: minmax(0, 1fr) 330px;
  }

  .intro-copy {
    padding: 38px;
  }

  .intro h1 {
    font-size: 42px;
  }

  .intro-copy__lede {
    font-size: 17px;
  }

  .app-capture {
    height: 390px;
  }

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

  .capability-row article:nth-child(2) {
    border-right: 0;
  }

  .capability-row article:nth-child(-n + 2) {
    border-bottom: 1px solid var(--black);
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .calculator-shell {
    grid-template-columns: 1fr;
  }

  .calculator-results {
    border-top: 1px solid var(--black);
    border-left: 0;
  }

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

  .workflow {
    grid-template-columns: 1fr;
    gap: 34px;
  }

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

  .ledger__summary > div:nth-child(3) {
    border-right: 0;
  }

  .ledger__summary > div:nth-child(-n + 3) {
    border-bottom: 1px solid var(--border);
  }

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

  .pepai-module {
    border-right: 0;
    border-bottom: 1px solid var(--black);
  }

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

@media (max-width: 720px) {
  :root {
    --gutter: 20px;
    --section-nav-height: 48px;
  }

  .utility-strip {
    min-height: 30px;
    padding-inline: 14px;
    font-size: 9px;
  }

  .site-header__inner {
    width: calc(100% - 32px);
  }

  .header-actions {
    display: grid;
  }

  .header-search,
  .header-cta {
    width: 100%;
  }

  .section-nav__inner {
    grid-template-columns: repeat(5, 112px);
  }

  .section-nav a {
    min-width: 112px;
  }

  .intro {
    padding-top: 24px;
  }

  .intro-panel {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .intro-copy {
    padding: 32px 24px;
  }

  .intro h1 {
    font-size: 46px;
  }

  .intro-product {
    min-height: 440px;
    border-top: 1px solid var(--black);
    border-left: 0;
  }

  .app-capture {
    height: 360px;
  }

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

  .capability-row article,
  .capability-row article:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid var(--black);
  }

  .capability-row article:last-child {
    border-bottom: 0;
  }

  .product-section {
    padding: 76px 0;
  }

  .section-heading h2,
  .workflow h2,
  .final-cta h2 {
    font-size: 36px;
  }

  .calculator-controls,
  .calculator-results {
    padding: 24px;
  }

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

  .results-heading strong {
    font-size: 18px;
  }

  .catalog-toolbar {
    grid-template-columns: 1fr;
  }

  .catalog-search,
  .catalog-sort,
  .catalog-filters {
    grid-column: 1;
    grid-row: auto;
    width: 100%;
  }

  .catalog-filters {
    justify-self: stretch;
  }

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

  .catalog-card {
    display: grid;
    grid-template-columns: 132px 1fr;
  }

  .catalog-card__media {
    min-height: 100%;
    aspect-ratio: auto;
    border-right: 1px solid var(--border);
    border-bottom: 0;
  }

  .catalog-card h3 {
    min-height: 0;
    font-size: 17px;
  }

  .workflow {
    padding-top: 76px;
    padding-bottom: 76px;
  }

  .workflow ol {
    grid-template-columns: 1fr;
  }

  .workflow li {
    min-height: 130px;
    border-right: 0;
    border-bottom: 1px solid var(--black);
  }

  .workflow li:last-child {
    border-bottom: 0;
  }

  .workflow li p {
    margin-top: 28px;
  }

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

  .ledger__summary > div,
  .ledger__summary > div:nth-child(3) {
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .ledger__summary > div:nth-child(even) {
    border-right: 0;
  }

  .ledger__summary > div:last-child {
    grid-column: 1 / -1;
    border-right: 0;
    border-bottom: 0;
  }

  .ledger__row {
    grid-template-columns: 1fr 1fr;
    gap: 8px 16px;
    padding: 16px 0;
  }

  .ledger__row--labels {
    display: none;
  }

  .ledger__row strong {
    grid-column: 1 / -1;
  }

  .pepai-module,
  .learn-index {
    padding: 28px 24px;
  }

  .module-heading h2 {
    font-size: 34px;
  }

  .context-chat__context,
  .context-chat__row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .resource-links a {
    grid-template-columns: 1fr auto;
    gap: 8px 14px;
    padding: 14px 0;
  }

  .resource-links span {
    grid-column: 1 / -1;
  }

  .final-cta__inner {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

@media (max-width: 420px) {
  .intro h1 {
    font-size: 42px;
  }

  .intro-actions {
    width: 100%;
  }

  .intro-actions .button {
    width: 100%;
  }

  .calculator-controls__head {
    align-items: flex-start;
  }

  .syringe-guide figcaption {
    display: grid;
    gap: 6px;
  }

  .catalog-card {
    grid-template-columns: 112px 1fr;
  }

  .catalog-card__body {
    padding: 14px;
  }

  .catalog-card__meta {
    display: grid;
  }

  .ledger__head {
    align-items: flex-start;
  }

  .site-footer__bottom {
    display: grid;
    gap: 8px;
  }
}

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

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