@font-face {
  font-family: "IBM Plex Sans";
  src: url("/fonts/IBMPlexSans-Regular.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Sans";
  src: url("/fonts/IBMPlexSans-Medium.woff2") format("woff2");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Sans";
  src: url("/fonts/IBMPlexSans-SemiBold.woff2") format("woff2");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

:root {
  color-scheme: light;
  font-family: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  color: #1d201d;
  background: #f3f1ea;
  font-synthesis: none;
  --ink: #1d201d;
  --muted: #59605a;
  --paper: #f3f1ea;
  --surface: #fbfaf6;
  --line: #c9cbc3;
  --blue: #075fae;
  --blue-dark: #153a56;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  min-width: 20rem;
  min-height: 100vh;
  margin: 0;
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

a:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 4px;
}

img { max-width: 100%; }

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 20;
  padding: 0.65rem 0.9rem;
  background: var(--ink);
  color: #fff;
  transform: translateY(-180%);
}

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

.shell {
  width: min(100% - 3rem, 76rem);
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 5.25rem;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  text-decoration: none;
}

.brand-logo {
  width: 2rem;
  height: 2rem;
  border-radius: 35%;
  object-fit: cover;
}

nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

nav a {
  color: #444a45;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
}

nav a:not(.nav-cta):hover { text-decoration: underline; text-underline-offset: 0.25em; }

.nav-cta {
  padding: 0.68rem 0.9rem;
  border: 1px solid var(--ink);
  border-radius: 0.25rem;
  background: var(--ink);
  color: #fff;
}

.hero {
  display: flex;
  align-items: center;
  min-height: 42rem;
  padding: 6rem 0 6.5rem;
}

.hero-copy { max-width: 58rem; }

.eyebrow {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow span {
  margin-right: 0.65rem;
  color: var(--blue);
}

h1,
h2,
h3,
p { text-wrap: pretty; }

h1 {
  max-width: 9em;
  margin: 0;
  font-size: clamp(2.75rem, 5.4vw, 4rem);
  font-weight: 500;
  line-height: 1.04;
  letter-spacing: -0.03em;
}

.lede {
  max-width: 35rem;
  margin: 1.65rem 0 0;
  color: var(--muted);
  font-size: clamp(1.075rem, 1.8vw, 1.25rem);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 3.2rem;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 0.8rem 0.9rem 0.8rem 1rem;
  border: 1px solid var(--ink);
  border-radius: 0.25rem;
  background: var(--ink);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 150ms ease, color 150ms ease;
}

.button span { font-size: 1.05rem; }

.button:hover {
  background: transparent;
  color: var(--ink);
}

.text-link {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  text-underline-offset: 0.25em;
}

.availability {
  margin: 1.1rem 0 0;
  color: #656c66;
  font-size: 0.8125rem;
}

.availability strong { color: #3f4540; font-weight: 500; }

.proof {
  padding: 7.5rem 0 3rem;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1.1fr) minmax(15rem, 0.55fr);
  gap: 2rem;
  align-items: start;
  margin-bottom: 5rem;
}

.section-number {
  margin: 0.3rem 0 0;
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.section-heading .eyebrow { margin-bottom: 0.65rem; }

h2 {
  max-width: 12em;
  margin: 0;
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.section-intro {
  margin: 2.15rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

.conversation-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.conversation-item {
  min-width: 0;
  margin: 0;
}

.conversation-item figcaption {
  display: flex;
  min-height: 9rem;
  flex-direction: column;
  padding-bottom: 1.5rem;
}

.conversation-item figcaption span {
  margin-bottom: 1rem;
  color: var(--blue);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.conversation-item figcaption strong {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.conversation-item figcaption p {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.5;
}

.conversation-shot {
  overflow: hidden;
  height: 42rem;
  border: 1px solid #2e302e;
  border-radius: 0.75rem;
  background: #050505;
}

.conversation-shot img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.how {
  padding: 8rem 0;
}

.how-heading {
  grid-template-columns: 4rem 1fr;
  margin-bottom: 4rem;
}

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

.steps li {
  min-height: 15rem;
  padding: 1.5rem 2rem 2rem 0;
}

.steps li + li {
  padding-left: 2rem;
  border-left: 1px solid var(--line);
}

.steps li > span {
  color: var(--blue);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.steps li > div { margin-top: 4.75rem; }

.steps strong {
  display: block;
  font-size: 1.15rem;
  font-weight: 600;
}

.steps p {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.final-cta {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(18rem, 0.7fr);
  gap: clamp(3rem, 10vw, 9rem);
  align-items: end;
  margin-bottom: 1.5rem;
  padding: clamp(2.5rem, 6vw, 5rem);
  background: var(--blue-dark);
  color: #fff;
}

.final-cta .eyebrow { color: #a9c5d9; }
.final-cta h2 { max-width: 7em; }

.button-light {
  margin-top: 2rem;
  border-color: #fff;
  background: #fff;
  color: var(--blue-dark);
}

.button-light:hover { background: transparent; color: #fff; }

.cta-details p {
  margin: 0;
  color: #d0dce4;
  font-size: 0.9rem;
  line-height: 1.65;
}

.cta-details p + p { margin-top: 1rem; }
.cta-details a { color: #fff; text-underline-offset: 0.2em; }

.site-footer,
.legal-footer {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 2rem;
  padding: 2rem 0 2.5rem;
  color: #606761;
  font-size: 0.78rem;
}

.site-footer p { margin: 0; }
.footer-links,
.legal-footer div { display: flex; gap: 1.25rem; }
.footer-links a,
.legal-footer a { text-decoration: none; }
.footer-links a:hover,
.legal-footer a:hover { text-decoration: underline; text-underline-offset: 0.2em; }
.footer-brand { color: var(--ink); }

.document {
  width: min(100%, 46rem);
  margin: 0 auto;
  padding: 6rem 0;
}

.document h1 {
  max-width: none;
  font-size: clamp(3rem, 8vw, 5rem);
}

.document h2 {
  max-width: none;
  margin: 3rem 0 0.8rem;
  font-size: 1.6rem;
  letter-spacing: -0.025em;
}

.document p,
.document li {
  color: #4e554f;
  font-size: 1rem;
  line-height: 1.75;
}

.document li + li { margin-top: 0.65rem; }
.document strong { color: var(--ink); font-weight: 600; }

.document code {
  padding: 0.1rem 0.3rem;
  border-radius: 0.2rem;
  background: #e6e3da;
  color: var(--ink);
}

.updated {
  margin: 1rem 0 3rem;
  color: #707771;
  font-size: 0.82rem;
}

.legal-footer {
  grid-template-columns: 1fr auto;
  border-top: 1px solid var(--line);
}

.journal-hero {
  max-width: 48rem;
  padding: 7rem 0 4.5rem;
}

.journal-hero h1,
.article-header h1 {
  max-width: none;
  font-size: clamp(2.75rem, 5.4vw, 4rem);
}

.journal-hero .lede { margin-left: 0; }

.journal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  padding: 0 0 7rem;
}

.journal-card {
  display: flex;
  min-height: 23rem;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.6rem;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  background: var(--surface);
  text-decoration: none;
  transition: border-color 150ms ease, background-color 150ms ease;
}

.journal-card:hover {
  border-color: #969b94;
  background: #fff;
}

.journal-card h2 {
  max-width: none;
  margin-top: 1.5rem;
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.journal-card p {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.journal-card-meta,
.article-meta {
  color: #666d67;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.journal-card-arrow {
  margin-top: 2.5rem;
  color: var(--blue);
  font-size: 1.2rem;
}

.article-header {
  width: min(100%, 54rem);
  padding: 7rem 0 4rem;
}

.article-header .lede { max-width: 45rem; }
.article-meta { margin-top: 2rem; }

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 44rem) 1fr;
  gap: 5rem;
  align-items: start;
  padding-bottom: 7rem;
}

.article-body p,
.article-body li {
  color: #454c46;
  font-size: 1.0625rem;
  line-height: 1.8;
}

.article-body > p:first-child {
  color: var(--ink);
  font-size: 1.2rem;
}

.article-body h2 {
  max-width: none;
  margin: 3.4rem 0 1rem;
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.article-body h3 {
  margin: 2.3rem 0 0.65rem;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.article-body a { text-underline-offset: 0.18em; }

.article-body blockquote {
  margin: 2.5rem 0;
  padding-left: 1.35rem;
  border-left: 3px solid var(--blue);
}

.article-body blockquote p {
  color: var(--ink);
  font-size: 1.15rem;
}

.article-aside {
  position: sticky;
  top: 2rem;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  background: var(--surface);
}

.article-aside strong { display: block; font-size: 0.9rem; }

.article-aside p {
  margin: 0.55rem 0 1rem;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.55;
}

.article-aside .button {
  width: 100%;
  margin-top: 0;
  font-size: 0.8rem;
}

.sources {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.sources h2 { margin-top: 0; font-size: 1.5rem; }
.sources li { font-size: 0.9rem; }

.related-reading {
  padding: 5rem 0 7rem;
  border-top: 1px solid var(--line);
}

.related-reading h2 { margin-bottom: 2rem; }

.related-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.related-links a {
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  background: var(--surface);
  font-weight: 600;
  line-height: 1.35;
  text-decoration: none;
}

.features-hero {
  max-width: 58rem;
  padding: 7rem 0 4.5rem;
}

.features-hero h1 {
  max-width: 10em;
}

.features-hero .lede {
  max-width: 45rem;
  margin-left: 0;
}

.features-index {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.4rem;
  padding: 1.1rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.features-index a {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
  text-underline-offset: 0.22em;
}

.features-index a:hover { color: var(--ink); }

.features-content { padding-bottom: 5rem; }

.feature-section {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr);
  gap: 2rem;
  padding: 5.5rem 0;
  border-bottom: 1px solid var(--line);
}

.feature-section-last { border-bottom: 0; }

.feature-section-number {
  margin: 0.35rem 0 0;
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.feature-section .eyebrow { margin-bottom: 0.7rem; }

.feature-section h2 {
  max-width: 15em;
  font-size: clamp(2rem, 4vw, 2.75rem);
}

.feature-section-lede {
  max-width: 44rem;
  margin: 1.25rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.feature-steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: 3rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.feature-steps li {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 1rem;
  min-height: 9rem;
  padding: 1.35rem 1.5rem 1.35rem 0;
  border-bottom: 1px solid var(--line);
}

.feature-steps li:nth-child(even) {
  padding-left: 1.5rem;
  border-left: 1px solid var(--line);
}

.feature-steps li > span {
  color: var(--blue);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.feature-steps strong,
.feature-bullets strong { font-weight: 600; }

.feature-steps p {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.feature-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 3rem;
  max-width: 58rem;
  margin-top: 2.5rem;
}

.feature-detail {
  max-width: 58rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.feature-columns h3 {
  margin: 0 0 0.85rem;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.feature-bullets {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--muted);
}

.feature-bullets li {
  padding-left: 0.25rem;
  font-size: 0.95rem;
  line-height: 1.65;
}

.feature-bullets li + li { margin-top: 0.55rem; }

.feature-section code {
  padding: 0.08rem 0.28rem;
  border-radius: 0.2rem;
  background: #e6e3da;
  color: var(--ink);
  font-size: 0.9em;
}

.feature-note {
  max-width: 48rem;
  margin: 2.5rem 0 0;
  padding: 1rem 0 1rem 1rem;
  border-left: 3px solid var(--blue);
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

.feature-note strong { color: var(--ink); font-weight: 600; }
.feature-note a { text-underline-offset: 0.2em; }

.boundary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 2.5rem;
  border: 1px solid var(--line);
  background: var(--line);
}

.boundary-grid > div {
  min-height: 9rem;
  padding: 1.2rem;
  background: var(--paper);
}

.boundary-grid strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
}

.boundary-grid p {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

.features-cta {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 1.5rem;
  padding: 3rem clamp(1.5rem, 5vw, 4rem);
  background: var(--blue-dark);
  color: #fff;
}

.features-cta .eyebrow { margin-bottom: 0.7rem; color: #a9c5d9; }
.features-cta h2 { max-width: none; }
.features-cta .button { flex: 0 0 auto; }

/* Public-site expansion */
.site-header nav a[aria-current="page"] {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--blue);
  text-underline-offset: 0.35em;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(17rem, 0.55fr);
  gap: clamp(3rem, 8vw, 8rem);
}

.hero-note {
  align-self: end;
  padding: 1.4rem 0 0;
  border-top: 1px solid var(--line);
}

.hero-note strong {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
}

.hero-note p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

.section-rule {
  padding: 6rem 0;
  border-top: 1px solid var(--line);
}

.split-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(18rem, 0.55fr);
  gap: clamp(3rem, 9vw, 8rem);
  align-items: end;
  margin-bottom: 3rem;
}

.split-heading .eyebrow { margin-bottom: 0.7rem; }

.split-heading > p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

.capability-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.capability-list li {
  min-height: 12rem;
  padding: 1.5rem 2rem 2rem 0;
  border-bottom: 1px solid var(--line);
}

.capability-list li:nth-child(even) {
  padding-left: 2rem;
  border-left: 1px solid var(--line);
}

.capability-list span,
.detail-kicker {
  display: block;
  margin-bottom: 2.8rem;
  color: var(--blue);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.capability-list h3,
.use-case h3,
.link-panel h3 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.capability-list p,
.use-case p,
.link-panel p {
  margin: 0.6rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.capability-list a,
.use-case a,
.link-panel a {
  display: inline-block;
  margin-top: 1rem;
  color: var(--blue);
  font-size: 0.85rem;
  font-weight: 600;
  text-underline-offset: 0.22em;
}

.use-case-grid,
.link-panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.use-case,
.link-panel {
  min-height: 16rem;
  padding: 1.5rem;
  border: 1px solid var(--line);
  background: var(--surface);
}

.use-case blockquote {
  margin: 2.5rem 0 0;
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.55;
}

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

.trust-strip div { padding: 1.5rem 1.5rem 1.5rem 0; }
.trust-strip div + div { padding-left: 1.5rem; border-left: 1px solid var(--line); }
.trust-strip strong { display: block; font-size: 0.95rem; font-weight: 600; }
.trust-strip p { margin: 0.45rem 0 0; color: var(--muted); font-size: 0.84rem; line-height: 1.55; }

.faq-list { margin-top: 1rem; border-top: 1px solid var(--line); }

.faq-item {
  display: grid;
  grid-template-columns: minmax(12rem, 0.65fr) minmax(0, 1fr);
  gap: 3rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
}

.faq-item h3 { margin: 0; font-size: 1rem; font-weight: 600; }
.faq-item p { margin: 0; color: var(--muted); font-size: 0.92rem; line-height: 1.65; }

.page-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(17rem, 0.45fr);
  gap: clamp(3rem, 9vw, 8rem);
  align-items: end;
  padding: 6rem 0 4.5rem;
}

.page-hero h1 { max-width: 11em; }
.page-hero .lede { max-width: 42rem; }

.page-hero-aside {
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

.page-hero-aside strong { color: var(--ink); font-weight: 600; }

.detail-layout {
  display: grid;
  grid-template-columns: minmax(11rem, 0.32fr) minmax(0, 1fr);
  gap: clamp(3rem, 8vw, 7rem);
  padding: 4.5rem 0 6rem;
  border-top: 1px solid var(--line);
}

.detail-nav {
  position: sticky;
  top: 1.5rem;
  align-self: start;
}

.detail-nav strong {
  display: block;
  margin-bottom: 0.8rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.detail-nav a {
  display: block;
  padding: 0.38rem 0;
  color: var(--muted);
  font-size: 0.84rem;
  text-decoration: none;
}

.detail-nav a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 0.2em; }

.detail-body { min-width: 0; }
.detail-section { padding: 0 0 4rem; }
.detail-section + .detail-section { padding-top: 4rem; border-top: 1px solid var(--line); }
.detail-section h2 { max-width: 16em; }
.detail-section > p { max-width: 44rem; color: var(--muted); font-size: 1rem; line-height: 1.7; }

.example-list {
  margin: 2rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.example-list li {
  display: grid;
  grid-template-columns: minmax(9rem, 0.35fr) minmax(0, 1fr);
  gap: 2rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.example-list strong { font-size: 0.84rem; font-weight: 600; }
.example-list code { background: transparent; color: var(--ink); font-family: inherit; font-size: 0.95rem; }

.callout {
  max-width: 48rem;
  margin-top: 2rem;
  padding: 1.25rem;
  border-left: 3px solid var(--blue);
  background: var(--surface);
}

.callout strong { display: block; margin-bottom: 0.35rem; font-size: 0.9rem; }
.callout p { margin: 0; color: var(--muted); font-size: 0.9rem; line-height: 1.6; }

.guide-group { padding: 4rem 0; border-top: 1px solid var(--line); }
.guide-group-header { display: grid; grid-template-columns: 3rem minmax(0, 1fr); gap: 1.5rem; }
.guide-group-number { color: var(--blue); font-size: 0.72rem; font-weight: 600; }
.guide-group h2 { max-width: 18em; }
.guide-group .feature-columns { margin-left: 4.5rem; }

.article-date { display: block; margin-top: 0.4rem; color: var(--muted); font-size: 0.76rem; }
.journal-card.featured { grid-column: span 2; min-height: 20rem; }
.journal-card.featured h2 { max-width: 15em; }
.journal-intro { max-width: 46rem; margin-bottom: 2.5rem; color: var(--muted); line-height: 1.7; }

.site-footer {
  grid-template-columns: minmax(12rem, 1fr) minmax(0, 1.6fr) auto;
  align-items: start;
  padding-top: 3rem;
  border-top: 1px solid var(--line);
}

.footer-summary p { max-width: 19rem; margin: 0.8rem 0 0; line-height: 1.55; }
.footer-columns { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem; }
.footer-column strong { display: block; margin-bottom: 0.65rem; color: var(--ink); font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.footer-column a { display: block; padding: 0.25rem 0; color: var(--muted); font-size: 0.78rem; text-decoration: none; }
.footer-column a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 0.2em; }
.footer-meta { white-space: nowrap; }

@media (max-width: 860px) {
  .site-header nav { gap: 1rem; }

  .hero,
  .page-hero { grid-template-columns: 1fr; gap: 3rem; }

  .section-heading { grid-template-columns: 3rem 1fr; }
  .section-intro { grid-column: 2; margin-top: 0; }

  .conversation-grid {
    grid-template-columns: none;
    grid-auto-columns: min(68vw, 21rem);
    grid-auto-flow: column;
    overflow-x: auto;
    padding-bottom: 1rem;
    scroll-snap-type: x mandatory;
    scrollbar-width: thin;
  }

  .conversation-item { scroll-snap-align: start; }

  .feature-section { grid-template-columns: 3rem minmax(0, 1fr); }
  .boundary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .detail-layout { grid-template-columns: 1fr; gap: 2rem; }
  .detail-nav { position: static; display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; }
  .detail-nav strong { flex-basis: 100%; }
  .detail-nav a { display: inline-block; }
  .site-footer { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .shell { width: min(100% - 2rem, 76rem); }
  .site-header { min-height: 4.65rem; flex-wrap: wrap; padding: 0.8rem 0; }
  nav[aria-label="Primary navigation"] {
    order: 2;
    width: 100%;
    gap: 0.9rem;
    overflow-x: auto;
    padding: 0.35rem 0 0.25rem;
    scrollbar-width: thin;
  }
  nav[aria-label="Primary navigation"] a { flex: 0 0 auto; white-space: nowrap; }
  .nav-cta { padding: 0.62rem 0.75rem; }

  .hero {
    min-height: 0;
    padding: 4.5rem 0 5rem;
  }

  h1 { font-size: clamp(2.65rem, 12vw, 3.35rem); }
  .lede { font-size: 1.075rem; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 1rem; }

  .proof { padding: 5rem 0 2rem; }

  .section-heading {
    grid-template-columns: 2.25rem 1fr;
    gap: 1rem;
    margin-bottom: 3.5rem;
  }

  .section-intro { grid-column: 2; }
  h2 { font-size: clamp(2rem, 9vw, 2.6rem); }
  .conversation-grid { grid-auto-columns: min(78vw, 21rem); }
  .conversation-shot { height: 38rem; }

  .how { padding: 6rem 0; }
  .how-heading { grid-template-columns: 2.25rem 1fr; margin-bottom: 3rem; }

  .steps { grid-template-columns: 1fr; }
  .steps li { min-height: 11rem; padding: 1.5rem 0 2rem; }
  .steps li + li { padding-left: 0; border-top: 1px solid var(--line); border-left: 0; }
  .steps li > div { margin-top: 2.75rem; }

  .final-cta {
    grid-template-columns: 1fr;
    gap: 3.5rem;
    padding: 2.25rem 1.5rem;
  }

  .site-footer { grid-template-columns: 1fr; gap: 2rem; }
  .site-footer > span { margin-top: 0.5rem; }
  .document { padding: 4rem 0; }
  .features-hero { padding: 5rem 0 3rem; }
  .features-index { gap: 0.65rem 1rem; }
  .features-content { padding-bottom: 3rem; }
  .feature-section {
    grid-template-columns: 2.25rem minmax(0, 1fr);
    gap: 1rem;
    padding: 4rem 0;
  }
  .feature-section h2 { font-size: clamp(2rem, 9vw, 2.6rem); }
  .feature-section-lede { font-size: 1rem; }
  .feature-steps,
  .feature-columns { grid-template-columns: 1fr; gap: 2rem; }
  .feature-steps li,
  .feature-steps li:nth-child(even) {
    padding-left: 0;
    border-left: 0;
  }
  .boundary-grid { grid-template-columns: 1fr; }
  .features-cta { align-items: start; flex-direction: column; padding: 2.25rem 1.5rem; }
  .journal-hero,
  .article-header { padding: 5rem 0 3rem; }
  .journal-grid { grid-template-columns: 1fr; padding-bottom: 5rem; }
  .journal-card { min-height: 18rem; }
  .article-layout { grid-template-columns: 1fr; gap: 3rem; padding-bottom: 5rem; }
  .article-aside { position: static; }
  .related-links { grid-template-columns: 1fr; }
  .split-heading,
  .capability-list,
  .use-case-grid,
  .link-panel-grid,
  .trust-strip,
  .faq-item,
  .example-list li,
  .footer-columns { grid-template-columns: 1fr; }
  .capability-list li,
  .capability-list li:nth-child(even) { min-height: 0; padding: 1.4rem 0; border-left: 0; }
  .trust-strip div,
  .trust-strip div + div { padding: 1.25rem 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .faq-item { gap: 0.6rem; }
  .guide-group .feature-columns { margin-left: 0; }
  .journal-card.featured { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button,
  .journal-card { transition: none; }
}

/* Conversion site */
:root {
  --ink: #172019;
  --muted: #566159;
  --paper: #f4f1e8;
  --surface: #fbfaf5;
  --line: #c7ccc2;
  --blue: #075d48;
  --blue-dark: #153f35;
  --accent-soft: #dce9df;
}

body { overflow-x: clip; }
button, input { font: inherit; }
button:focus-visible,
summary:focus-visible,
dialog a:focus-visible {
  outline: 3px solid #0b6f56;
  outline-offset: 4px;
}

.menu-button {
  display: none;
  min-width: 3rem;
  min-height: 2.75rem;
  border: 1px solid var(--line);
  border-radius: 0.25rem;
  background: transparent;
  color: var(--ink);
  font-size: 0.875rem;
  font-weight: 600;
}

.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.55fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: center;
  min-height: 43rem;
  padding: clamp(4.5rem, 9vw, 8rem) 0;
}

.home-hero h1 {
  max-width: 13ch;
  font-size: clamp(3rem, 6vw, 5.25rem);
  line-height: 0.98;
}

.home-hero .lede { max-width: 39rem; }
.hero-qr {
  display: grid;
  width: min(100%, 25rem);
  grid-template-columns: 4.5rem minmax(0, 1fr);
  gap: 0.9rem;
  align-items: center;
  margin-top: 1.5rem;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
  transition: border-color 150ms ease, transform 150ms ease;
}
.hero-qr:hover { border-color: #8a918b; transform: translateY(-1px); }
.hero-qr img { display: block; width: 4.5rem; height: 4.5rem; }
.hero-qr span { display: grid; gap: 0.25rem; }
.hero-qr strong { font-size: 0.9rem; }
.hero-qr small { color: var(--muted); font-size: 0.75rem; line-height: 1.45; }
.hero-transcript {
  align-self: center;
  overflow: hidden;
  padding: 0 1rem 1.25rem;
  border: 1px solid #d8d8dc;
  border-radius: 1.8rem;
  background: #fff;
  box-shadow: 0 1.5rem 4rem rgb(25 32 27 / 12%);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
}

.messages-header {
  display: grid;
  grid-template-columns: 2rem 1fr 2rem;
  justify-items: center;
  align-items: center;
  min-height: 5.5rem;
  margin: 0 -1rem;
  padding: 0.65rem 1rem 0.55rem;
  border-bottom: 1px solid #ececef;
  background: rgb(249 249 249 / 96%);
}

.messages-back {
  justify-self: start;
  color: #087cff;
  font-size: 2.2rem;
  font-weight: 300;
  line-height: 1;
}

.messages-avatar {
  grid-column: 2;
  display: grid;
  overflow: hidden;
  width: 2.65rem;
  height: 2.65rem;
  place-items: center;
  border-radius: 50%;
  background: #c3bde8;
}

.messages-avatar img { display: block; width: 100%; height: 100%; object-fit: cover; }

.messages-contact {
  grid-column: 2;
  color: #191919;
  font-size: 0.72rem;
  line-height: 1;
}

.messages-contact span { color: #8a8a8e; }

.hero-transcript .example-label {
  margin: 0.8rem 0 1.1rem;
  text-align: center;
}

.example-label {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.hero-transcript .message {
  position: relative;
  width: fit-content;
  max-width: 86%;
  margin: 0;
  padding: 0.55rem 0.72rem;
  border-radius: 1.12rem;
  font-size: 0.9rem;
  line-height: 1.3;
}

.message-time {
  margin: 0 0 0.75rem;
  color: #8e8e93;
  font-size: 0.67rem;
  font-weight: 600;
  text-align: center;
}

.message-row { position: relative; display: flex; margin-top: 0.85rem; }
.message-row + .message-row { margin-top: 1rem; }
.message-row-user { justify-content: flex-end; }
.message-row-product { justify-content: flex-start; }
.message-user { border-bottom-right-radius: 0.3rem; background: #0b84ff; color: #fff; }
.message-product { border-bottom-left-radius: 0.3rem; color: #111; background: #e9e9eb; }

.message-user::after,
.message-product::after {
  position: absolute;
  bottom: 0;
  width: 0.55rem;
  height: 0.7rem;
  content: "";
}

.message-user::after {
  right: -0.28rem;
  border-bottom-left-radius: 0.6rem;
  background: #0b84ff;
}

.message-product::after {
  left: -0.28rem;
  border-bottom-right-radius: 0.6rem;
  background: #e9e9eb;
}

.message-reaction {
  position: absolute;
  z-index: 1;
  right: 0.35rem;
  bottom: -0.72rem;
  display: grid;
  min-width: 1.6rem;
  height: 1.2rem;
  place-items: center;
  border: 2px solid #fff;
  border-radius: 1rem;
  background: #e9e9eb;
  font-size: 0.7rem;
}

.section-block {
  padding: clamp(4.5rem, 8vw, 7rem) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 5rem;
}

.section-heading-simple {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(18rem, 0.5fr);
  gap: clamp(3rem, 8vw, 7rem);
  align-items: end;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-heading-simple .eyebrow { margin-bottom: 0.7rem; }
.section-heading-simple h2 { max-width: 15ch; }
.section-heading-simple > p {
  max-width: 34rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.proof-gallery { padding-top: 0; border-top: 0; }
.proof-gallery .conversation-shot { height: auto; aspect-ratio: 720 / 1220; }
.proof-gallery .conversation-shot img { object-position: top; }

.fit-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(18rem, 0.6fr);
  gap: clamp(2rem, 6vw, 5rem);
}

.fit-signals {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.fit-signals article { padding: 1.5rem 2rem 1.7rem 0; border-bottom: 1px solid var(--line); }
.fit-signals article:nth-child(even) { padding-left: 2rem; border-left: 1px solid var(--line); }
.fit-signals span { color: var(--blue); font-size: 0.72rem; font-weight: 600; }
.fit-signals h3 { margin: 2rem 0 0; font-size: 1.08rem; }
.fit-signals p { margin: 0.55rem 0 0; color: var(--muted); font-size: 0.9rem; line-height: 1.6; }

.exclusion-panel {
  padding: 1.5rem;
  border: 1px solid #afbab0;
  background: #e7ebe3;
}
.exclusion-panel .eyebrow { margin-bottom: 0.7rem; }
.exclusion-panel h3 { margin: 0; font-size: 1.25rem; line-height: 1.3; }
.exclusion-panel ul { margin: 1.5rem 0 0; padding-left: 1.1rem; color: #455249; }
.exclusion-panel li { padding-left: 0.2rem; font-size: 0.9rem; line-height: 1.55; }
.exclusion-panel li + li { margin-top: 0.8rem; }

.workflow-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  list-style: none;
}
.workflow-steps li { min-height: 14rem; padding: 1.35rem 2rem 1.6rem 0; }
.workflow-steps li + li { padding-left: 2rem; border-left: 1px solid var(--line); }
.workflow-steps > li > span { color: var(--blue); font-size: 0.76rem; font-weight: 600; }
.workflow-steps div { margin-top: 4rem; }
.workflow-steps h3 { margin: 0; font-size: 1.1rem; }
.workflow-steps p { margin: 0.55rem 0 0; color: var(--muted); font-size: 0.9rem; line-height: 1.6; }

.use-case-timeline {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.use-case-timeline li { position: relative; min-height: 10rem; padding: 1.5rem 1.2rem 1.2rem 0; border-bottom: 1px solid var(--line); }
.use-case-timeline li + li { padding-left: 1.2rem; border-left: 1px solid var(--line); }
.use-case-timeline span { color: var(--blue); font-size: 0.72rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.use-case-timeline p { margin: 3rem 0 0; font-size: 0.95rem; line-height: 1.5; }

.trust-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--line);
  background: var(--line);
  gap: 1px;
}
.trust-grid article { min-height: 9rem; padding: 1.4rem; background: var(--surface); }
.trust-grid h3 { margin: 0; font-size: 1rem; }
.trust-grid p { margin: 0.55rem 0 0; color: var(--muted); font-size: 0.9rem; line-height: 1.6; }
.ai-disclosure {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 3rem;
  align-items: center;
  margin-top: 1.5rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.ai-disclosure p { max-width: 52rem; margin: 0; color: var(--muted); font-size: 0.88rem; line-height: 1.65; }
.trust-links { display: flex; gap: 1rem; }
.trust-links a { color: var(--blue); font-size: 0.85rem; font-weight: 600; text-underline-offset: 0.2em; }

.faq-disclosures { border-top: 1px solid var(--line); }
.faq-disclosures details { border-bottom: 1px solid var(--line); }
.faq-disclosures summary {
  min-height: 3.75rem;
  padding: 1.2rem 2.5rem 1.2rem 0;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
}
.faq-disclosures p { max-width: 52rem; margin: 0; padding: 0 0 1.4rem; color: var(--muted); font-size: 0.94rem; line-height: 1.7; }
.final-cta > div > p:not(.eyebrow):not(.cta-note) { max-width: 31rem; color: #d3dfd7; line-height: 1.6; }
.cta-note { margin: 0.8rem 0 0; color: #d3dfd7; font-size: 0.82rem; }
.footer-limit { color: #3e5144; font-weight: 600; }

.text-button { min-height: 2.75rem; padding: 0; border: 0; background: transparent; color: var(--blue); font-weight: 600; text-decoration: underline; text-underline-offset: 0.2em; cursor: pointer; }
.copy-status { min-height: 1.5rem; font-size: 0.82rem; }
.handoff-limit { font-size: 0.84rem; }

.mobile-sticky-cta {
  position: fixed;
  z-index: 12;
  right: 1rem;
  bottom: calc(0.75rem + env(safe-area-inset-bottom));
  left: 1rem;
  min-height: 3.15rem;
  align-items: center;
  justify-content: center;
  border-radius: 0.3rem;
  background: var(--ink);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 0.6rem 2rem rgb(12 23 17 / 20%);
}
.mobile-sticky-cta:not([hidden]) { display: none; }

.shell-narrow { width: min(100% - 3rem, 60rem); }

.start-page {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(3rem, 9vw, 7rem);
  align-items: center;
  min-height: 38rem;
  padding: 5rem 0;
}
.breadcrumbs { display: flex; gap: 0.55rem; padding-top: 1.2rem; color: var(--muted); font-size: 0.78rem; }
.plain-summary { margin-bottom: 1rem; padding: 2rem; border: 1px solid var(--line); background: var(--surface); }
.plain-summary .eyebrow { margin-bottom: 0.7rem; }
.plain-summary h2 { max-width: none; font-size: clamp(1.7rem, 3vw, 2.2rem); }
.plain-summary ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.8rem 2rem; margin: 1.5rem 0 0; padding-left: 1.2rem; color: var(--muted); }
.plain-summary li { padding-left: 0.2rem; line-height: 1.55; }
.breadcrumbs a { text-underline-offset: 0.2em; }
.college-hero { padding-top: 4.5rem; }
.college-workflows { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.college-workflows article { min-height: 15rem; padding: 1.4rem 1.5rem 1.5rem 0; }
.college-workflows article + article { padding-left: 1.5rem; border-left: 1px solid var(--line); }
.college-workflows .detail-kicker { margin-bottom: 3.5rem; }
.college-workflows h3 { margin: 0; font-size: 1.08rem; }
.college-workflows p:not(.detail-kicker) { color: var(--muted); font-size: 0.9rem; line-height: 1.6; }
.college-proof { width: min(100%, 24rem); margin: 0 auto; }
.college-proof .conversation-shot { height: auto; aspect-ratio: 720 / 1250; }
.college-proof figcaption { margin-top: 0.8rem; color: var(--muted); font-size: 0.8rem; line-height: 1.5; }
.trust-links-large { gap: 1.5rem; padding: 1.4rem 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.college-cta-stack { display: flex; flex-direction: column; align-items: flex-end; gap: 1rem; }
.light-link { color: #fff; }
.start-copy h1 { max-width: 12ch; }
.start-copy .button { margin-top: 1.5rem; }
.standalone-copy { display: block; margin-top: 0.8rem; }
.start-qr-card {
  width: min(100%, 22rem);
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: var(--surface);
  text-align: center;
}
.start-qr-card .eyebrow { margin-bottom: 1rem; }
.start-qr-card img {
  display: block;
  width: min(100%, 17.5rem);
  height: auto;
  margin: 0 auto;
  padding: 0.45rem;
  background: #fff;
}
.start-qr-card h2 { max-width: none; margin-top: 1.25rem; font-size: 1.55rem; }
.start-qr-card > p:last-child { margin: 0.8rem 0 0; color: var(--muted); font-size: 0.84rem; line-height: 1.55; }

.compare-hero { padding-top: 4.5rem; }
.compare-hero h1 { max-width: 13ch; }
.pricing-note { max-width: 40rem; margin: 1.5rem 0 0; padding-left: 1rem; border-left: 3px solid var(--blue); color: var(--muted); font-size: 0.88rem; line-height: 1.6; }
.comparison-table-wrap { overflow-x: auto; margin-top: 2rem; border: 1px solid var(--line); background: var(--surface); }
.comparison-table { width: 100%; min-width: 50rem; border-collapse: collapse; text-align: left; }
.comparison-table th, .comparison-table td { padding: 1rem; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 0.88rem; line-height: 1.55; }
.comparison-table thead th { color: var(--ink); background: #e8e7df; font-size: 0.78rem; letter-spacing: 0.03em; }
.comparison-table tbody th { width: 12rem; color: var(--ink); font-weight: 600; }
.comparison-table tr:last-child th, .comparison-table tr:last-child td { border-bottom: 0; }
.comparison-table .texttodo-column { background: #f2f7fb; }
.approach-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.approach-grid article { min-height: 13rem; padding: 1.5rem 1.5rem 1.5rem 0; border-bottom: 1px solid var(--line); }
.approach-grid article:nth-child(even) { padding-left: 1.5rem; border-left: 1px solid var(--line); }
.approach-grid h3 { margin: 0; font-size: 1.08rem; }
.approach-grid p { max-width: 34rem; color: var(--muted); font-size: 0.9rem; line-height: 1.65; }
.compare-combination { padding: clamp(1.5rem, 4vw, 2.5rem); border: 1px solid var(--line); background: var(--surface); }
.compare-combination h3 { margin-top: 0; font-size: clamp(1.4rem, 3vw, 2rem); }
.compare-combination p { max-width: 48rem; color: var(--muted); line-height: 1.7; }

@media (max-width: 860px) {
  .home-hero { grid-template-columns: minmax(0, 1fr) minmax(16rem, 0.48fr); gap: 2.5rem; }
  .home-hero h1 { font-size: clamp(3rem, 7.5vw, 4.2rem); }
  .fit-layout { grid-template-columns: 1fr; }
  .use-case-timeline { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .use-case-timeline li:nth-child(4) { padding-left: 0; border-left: 0; }
}

@media (max-width: 700px) {
  .site-header { position: relative; flex-wrap: nowrap; }
  .menu-button { display: inline-flex; align-items: center; justify-content: center; }
  nav[aria-label="Primary navigation"] {
    position: absolute;
    z-index: 10;
    top: calc(100% - 0.2rem);
    right: 0;
    left: 0;
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    overflow: visible;
    padding: 0.5rem;
    border: 1px solid var(--line);
    background: var(--surface);
    box-shadow: 0 0.75rem 2rem rgb(12 23 17 / 12%);
  }
  nav[aria-label="Primary navigation"][data-open="true"] { display: flex; }
  nav[aria-label="Primary navigation"] a { min-height: 2.75rem; padding: 0.75rem; }
  nav[aria-label="Primary navigation"] .nav-cta { margin-top: 0.35rem; text-align: center; }

  .home-hero { grid-template-columns: 1fr; min-height: 0; padding: 4rem 0 4.5rem; }
  .home-hero h1 { max-width: 15ch; font-size: clamp(2.75rem, 13vw, 3.6rem); }
  .hero-qr { display: none; }
  .hero-transcript { max-width: 28rem; }
  .section-heading-simple { grid-template-columns: 1fr; gap: 1rem; }
  .section-heading-simple > p { max-width: 40rem; }
  .proof-gallery { grid-auto-columns: min(90vw, 24rem); }
  .fit-signals { grid-template-columns: 1fr; }
  .fit-signals article, .fit-signals article:nth-child(even) { padding: 1.4rem 0; border-left: 0; }
  .fit-signals h3 { margin-top: 1.5rem; }
  .workflow-steps { grid-template-columns: 1fr; }
  .workflow-steps li, .workflow-steps li + li { min-height: 0; padding: 1.4rem 0 1.6rem; border-left: 0; border-top: 1px solid var(--line); }
  .workflow-steps li:first-child { border-top: 0; }
  .workflow-steps div { margin-top: 1.6rem; }
  .use-case-timeline { grid-template-columns: 1fr; }
  .use-case-timeline li, .use-case-timeline li + li, .use-case-timeline li:nth-child(4) { min-height: 0; padding: 1.3rem 0; border-left: 0; }
  .use-case-timeline p { margin-top: 1rem; }
  .trust-grid { grid-template-columns: 1fr; }
  .trust-grid article { min-height: 0; }
  .ai-disclosure { grid-template-columns: 1fr; gap: 1rem; }
  .trust-links { flex-wrap: wrap; }
  .final-cta { align-items: start; }
  .footer-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mobile-sticky-cta:not([hidden]) { display: flex; }
  .shell-narrow { width: min(100% - 2rem, 60rem); }
  .start-page { grid-template-columns: 1fr; min-height: 0; padding: 4rem 0; }
  .start-qr-card { display: none; }
  .college-workflows { grid-template-columns: 1fr; }
  .college-workflows article, .college-workflows article + article { min-height: 0; padding: 1.4rem 0; border-top: 1px solid var(--line); border-left: 0; }
  .college-workflows article:first-child { border-top: 0; }
  .college-workflows .detail-kicker { margin-bottom: 1.8rem; }
  .college-cta-stack { align-items: flex-start; }
  .plain-summary ul { grid-template-columns: 1fr; }
  .approach-grid { grid-template-columns: 1fr; }
  .approach-grid article, .approach-grid article:nth-child(even) { min-height: 0; padding: 1.4rem 0; border-left: 0; }
}

@media (max-width: 380px) {
  .shell { width: min(100% - 1.5rem, 76rem); }
  .home-hero h1 { font-size: 2.6rem; }
  .hero-transcript { padding: 1rem; }
  .message { max-width: 94%; font-size: 0.78rem; }
  .footer-columns { grid-template-columns: 1fr; }
  .final-cta { margin-right: -0.25rem; margin-left: -0.25rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}