@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/fonts/ibm-plex-sans-latin-500-normal.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("assets/fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2");
}
:root {
  --ink: #19324c;
  --muted: #52677c;
  --pale: #eff6fd;
  --blue: #175cd3;
  --deep: #124b9a;
  --line: #d4dde5;
  --studio: #f5f6f4;
  --ease: cubic-bezier(0.2, 0, 0, 1);
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 40px;
}
body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font:
    400 16px/1.6 "IBM Plex Sans",
    sans-serif;
  -webkit-font-smoothing: antialiased;
}
button,
input,
textarea {
  font: inherit;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  cursor: pointer;
  color: inherit;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
p,
h1,
h2,
h3,
figure {
  margin: 0;
}
p {
  color: var(--muted);
}
[hidden] {
  display: none !important;
}
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 5px;
}
::selection {
  background: #c9e0ff;
  color: var(--ink);
}
.container {
  width: min(1328px, calc(100% - 112px));
  margin-inline: auto;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  padding: 12px;
  background: white;
  z-index: 100;
  transform: translateY(-150%);
}
.skip-link:focus {
  transform: none;
}
.site-header {
  background: var(--studio);
  position: relative;
  z-index: 10;
}
.nav-wrap {
  height: 91px;
  display: flex;
  align-items: center;
  gap: 40px;
  border-bottom: 1px solid #19324c26;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 35px;
  line-height: 1;
  font-weight: 500;
  letter-spacing: -1.8px;
}
.brand svg {
  width: 34px;
  height: 38px;
  stroke: var(--blue);
  stroke-width: 1.5;
  stroke-linejoin: round;
  fill: none;
}
.nav-wrap nav {
  display: flex;
  margin-left: auto;
  gap: 35px;
  font-size: 13px;
}
.nav-wrap nav a {
  padding: 12px 0;
}
.nav-wrap nav a:hover {
  color: var(--blue);
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  min-height: 55px;
  padding: 14px 21px;
  border: 1px solid var(--blue);
  border-radius: 1px;
  background: var(--blue);
  color: white;
  font-weight: 500;
  font-size: 14px;
  line-height: 1.5;
  transition: background 160ms var(--ease);
}
.button:hover {
  background: var(--deep);
}
.button span {
  font-size: 21px;
  font-weight: 400;
  line-height: 1;
}
.button-small {
  font-size: 12px;
  min-height: 42px;
  padding: 10px 15px;
  gap: 23px;
  background: transparent;
  color: var(--ink);
  border-color: #19324c4a;
}
.button-small:hover {
  background: var(--ink);
  color: #fff;
}
.button-outline {
  background: none;
  color: var(--blue);
  border-color: var(--blue);
}
.button-outline:hover {
  background: var(--blue);
  color: white;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 22px;
  padding: 3px 0 6px;
  border: 0;
  border-bottom: 1px solid #9fb6d0;
  background: none;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--blue);
}
.text-link:hover {
  border-color: var(--blue);
}
.text-link span {
  font-size: 21px;
  line-height: 1;
}
.eyebrow {
  font-size: 10px;
  letter-spacing: 1.3px;
  font-weight: 500;
  color: var(--muted);
}
.status-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 8px;
  margin-bottom: 1px;
  border-radius: 100%;
  background: var(--blue);
}
.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: transparent;
  padding: 8px 12px;
  font-size: 13px;
}
.menu-toggle span {
  margin-left: 12px;
}
/* One studio surface: type, paper and prism share the same composition. */
.hero {
  height: 800px;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--studio);
  padding: 32px 56px 0;
}
.hero-topline {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  min-height: 16px;
  position: relative;
  z-index: 2;
}
.edition-tag {
  font-size: 9px;
  letter-spacing: 1.4px;
  color: var(--muted);
}
.hero-copy {
  position: relative;
  z-index: 2;
  pointer-events: none;
}
.hero-copy a {
  pointer-events: auto;
}
.hero h1 {
  font-size: clamp(76px, 8.2vw, 130px);
  font-weight: 400;
  letter-spacing: -0.063em;
  line-height: 0.98;
  margin-top: 37px;
  max-width: 820px;
}
.hero h1 em {
  font-style: normal;
  color: var(--blue);
}
.hero-bottom-copy {
  margin-top: 43px;
  width: 380px;
}
.hero-lead {
  font-size: 24px;
  letter-spacing: -0.6px;
  line-height: 1.35;
  color: var(--ink);
}
.hero-description {
  font-size: 13px;
  line-height: 1.7;
  margin-top: 15px;
  margin-bottom: 24px;
}
.hero-quote {
  display: table;
  margin-top: 16px;
  font-size: 12px;
  line-height: 1.4;
}
.hero-quote span {
  margin-left: 20px;
  font-size: 17px;
}
.hero-figure {
  position: absolute;
  right: -6%;
  top: 5px;
  width: 78%;
  height: 725px;
  z-index: 0;
}
.scene-frame,
#manual-scene {
  position: absolute;
  inset: 0;
}
.scene-frame {
  pointer-events: none;
}
#manual-scene canvas {
  display: block;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.scene-fallback {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.scene-ready .scene-fallback {
  visibility: hidden;
}
.hero-figure figcaption {
  position: absolute;
  bottom: 5px;
  right: 12%;
  left: 28%;
  display: flex;
  align-items: start;
  gap: 17px;
  font-size: 11px;
  line-height: 1.55;
  color: var(--muted);
  border-top: 1px solid #19324c26;
  padding-top: 16px;
}
.scene-caption-number {
  font-size: 25px;
  color: var(--blue);
  line-height: 1;
}
.artwork-note {
  font-size: 8px;
  letter-spacing: 1px;
  margin-left: auto;
}
.hero-explorer {
  position: absolute;
  bottom: 0;
  left: 56px;
  right: 56px;
  min-height: 69px;
  display: flex;
  align-items: center;
  gap: 32px;
  border-top: 1px solid #19324c26;
  z-index: 3;
}
.explorer-label {
  font-size: 8px;
  letter-spacing: 1.3px;
  color: var(--muted);
}
.scene-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}
.scene-controls button {
  font-size: 12px;
  padding: 8px 15px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 0;
  color: var(--muted);
}
.scene-controls button > span {
  font-size: 9px;
  margin-right: 10px;
}
.scene-controls button[aria-pressed="true"] {
  border-color: #b6c5d4;
  color: var(--ink);
  background: #fff8;
}
.scene-controls button:hover {
  background: #fff;
}
.explore-down {
  margin-left: auto;
  font-size: 11px;
  display: flex;
  align-items: center;
  gap: 23px;
}
.explore-down span {
  font-size: 21px;
}
.hero-foot {
  padding: 54px 0;
  display: flex;
  align-items: center;
  gap: 90px;
  border-bottom: 1px solid var(--line);
}
.hero-foot > span:first-child {
  font-size: 24px;
  letter-spacing: -0.6px;
  line-height: 1.3;
}
.hero-foot strong {
  font-weight: 400;
  color: var(--blue);
}
.hero-foot > p {
  font-size: 14px;
}
.foot-index {
  margin-left: auto;
  font-size: 9px;
  letter-spacing: 1px;
  color: var(--muted);
}
/* The manual persists through the story, surrounded by questions and decisions. */
.section {
  padding-top: 110px;
  padding-bottom: 110px;
}
.section-heading {
  display: grid;
  grid-template-columns: 0.7fr 1.5fr;
  gap: 55px;
  margin-bottom: 55px;
}
.section-number {
  padding-top: 12px;
  font-size: 10px;
  letter-spacing: 1.2px;
}
.section h2,
.terminology-section h2 {
  font-size: clamp(40px, 4.4vw, 65px);
  font-weight: 400;
  letter-spacing: -0.052em;
  line-height: 1.08;
}
.section-heading p:not(.eyebrow) {
  margin-top: 22px;
  max-width: 540px;
  font-size: 16px;
}
.section-copy h2 {
  margin: 24px 0 27px;
}
.section-copy > p:not(.eyebrow) {
  max-width: 420px;
  font-size: 16px;
}
.section-copy .quiet {
  font-size: 13px !important;
  margin-top: 18px;
}
mark {
  background: #daebff;
  color: var(--deep);
  padding: 2px 3px;
  border-bottom: 1px solid #6b9ddd;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}
.options-section {
  border-top: 1px solid var(--line);
  padding-top: 95px;
}
.options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
}
.option {
  border-top: 2px solid var(--ink);
  padding: 24px 0 0;
  display: flex;
  flex-direction: column;
}
.option-beta {
  border-color: var(--blue);
}
.option-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 29px;
  font-size: 10px;
  letter-spacing: 1px;
}
.pill {
  border: 1px solid #b8c9dc;
  padding: 4px 9px;
  font-size: 10px;
  letter-spacing: 0;
  color: var(--deep);
}
.service-label {
  font-size: 11px;
  letter-spacing: 0;
  color: var(--muted);
}
.option h3 {
  font-size: 40px;
  font-weight: 400;
  letter-spacing: -1.7px;
  line-height: 1.2;
  margin: 30px 0 19px;
}
.option > p {
  max-width: 465px;
  font-size: 15px;
}
.option-bottom {
  margin-top: auto;
  padding-top: 32px;
}
.option-bottom > span {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 20px;
}
.faq-section {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 85px;
  padding-top: 20px;
}
.faq-section h2 {
  font-size: 45px;
  margin-top: 21px;
}
.faq-list details {
  border-top: 1px solid var(--line);
}
.faq-list details:last-child {
  border-bottom: 1px solid var(--line);
}
summary {
  padding: 23px 0;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 15px;
  cursor: pointer;
  list-style: none;
}
summary::-webkit-details-marker {
  display: none;
}
summary > span {
  font-size: 23px;
  color: var(--blue);
  line-height: 1.1;
  transition: transform 140ms;
}
details[open] summary > span {
  transform: rotate(45deg);
}
details > p {
  font-size: 14px;
  padding-bottom: 24px;
  max-width: 490px;
}
.closing {
  position: relative;
  overflow: hidden;
  background: var(--studio);
  width: 100%;
  padding: 74px max(56px, calc((100vw - 1328px) / 2)) 80px;
}
.closing h2 {
  font-size: clamp(50px, 6vw, 86px);
  font-weight: 400;
  letter-spacing: -0.06em;
  line-height: 1.06;
  position: relative;
  z-index: 1;
  margin: 27px 0 36px;
}
.closing-actions {
  display: flex;
  align-items: center;
  gap: 35px;
  position: relative;
  z-index: 1;
}
.site-footer {
  display: flex;
  align-items: center;
  gap: 25px;
  padding-top: 35px;
  padding-bottom: 35px;
  flex-wrap: wrap;
}
.site-footer .brand {
  font-size: 27px;
}
.site-footer .brand svg {
  width: 28px;
  height: 31px;
}
.site-footer p {
  font-size: 12px;
}
.footer-link {
  margin-left: auto;
  background: none;
  border: 0;
  border-bottom: 1px solid var(--line);
  font-size: 10px;
  color: var(--muted);
  padding: 6px 0;
}
.no-script {
  padding-block: 30px;
}
dialog {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 40px;
  width: min(570px, calc(100% - 32px));
  max-height: calc(100dvh - 40px);
  color: var(--ink);
  box-shadow: 0 30px 100px #19324c25;
}
dialog::backdrop {
  background: #122b465c;
  backdrop-filter: blur(4px);
}
.dialog-close {
  position: absolute;
  right: 14px;
  top: 12px;
  background: transparent;
  border: none;
  font-size: 28px;
  width: 40px;
  height: 40px;
  line-height: 1;
}
.dialog-close:hover {
  background: var(--pale);
}
dialog h2 {
  font-size: 31px;
  line-height: 1.2;
  font-weight: 400;
  letter-spacing: -0.7px;
  margin: 17px 0;
}
dialog > p:not(.eyebrow) {
  font-size: 14px;
  margin-bottom: 18px;
}
.contact-notice {
  background: var(--pale);
  border-left: 2px solid var(--blue);
  padding: 12px 14px;
  font-size: 12px !important;
}
form {
  margin-top: 24px;
}
form label {
  display: block;
  font-size: 13px;
  margin-bottom: 17px;
}
form label > span:not(#message-label) {
  color: var(--muted);
  font-size: 11px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
input:not([type="checkbox"]),
textarea {
  display: block;
  width: 100%;
  border: 1px solid #adbdcd;
  background: white;
  border-radius: 3px;
  padding: 10px 11px;
  margin-top: 6px;
  color: var(--ink);
  font-size: 16px;
}
textarea {
  resize: vertical;
  min-height: 90px;
  max-height: 250px;
}
.checkbox-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.checkbox-row input {
  accent-color: var(--blue);
  width: 17px;
  height: 17px;
}
form > .button {
  width: 100%;
  margin-top: 6px;
}
#request-result > p {
  font-size: 14px;
  margin: 12px 0;
}
#request-status { font-size: 13px; line-height: 1.6; margin-top: 14px; }
#request-status:empty { display: none; }
#request-status[data-state="error"] { color: #a52a22; }
button:disabled { cursor: wait; opacity: .65; }
body.dialog-open {
  overflow: hidden;
}
@media (min-width: 1600px) {
  .hero {
    height: 870px;
    padding-inline: max(56px, calc((100vw - 1500px) / 2));
  }
  .hero-figure {
    height: 800px;
    width: 74%;
    right: -3%;
    top: -12px;
  }
  .hero-explorer {
    left: max(56px, calc((100vw - 1500px) / 2));
    right: max(56px, calc((100vw - 1500px) / 2));
  }
  .hero h1 {
    font-size: 132px;
  }
  .hero-bottom-copy {
    margin-top: 45px;
  }
}
@media (max-width: 1100px) {
  .container {
    width: calc(100% - 72px);
  }
  .nav-wrap {
    gap: 26px;
  }
  .nav-wrap nav {
    gap: 23px;
  }
  .hero {
    height: 750px;
    padding: 30px 36px 0;
  }
  .hero h1 {
    font-size: 89px;
  }
  .hero-bottom-copy {
    margin-top: 36px;
    max-width: 320px;
  }
  .hero-lead {
    font-size: 23px;
  }
  .hero-description {
    font-size: 12px;
  }
  .hero-figure {
    width: 72%;
    height: 665px;
    right: -3%;
    top: 44px;
  }
  .hero-figure figcaption {
    right: 10%;
    left: 25%;
    bottom: 20px;
  }
  .hero-explorer {
    left: 36px;
    right: 36px;
    gap: 20px;
  }
  .explorer-label {
    display: none;
  }
  .hero-foot {
    gap: 40px;
  }
  .hero-foot > span:first-child {
    font-size: 22px;
  }
  .foot-index {
    display: none;
  }
  .section-heading {
    gap: 30px;
  }
  .section h2,
  .terminology-section h2 {
    font-size: 49px;
  }
  .options-grid {
    gap: 40px;
  }
  .option h3 {
    font-size: 34px;
  }
  .faq-section {
    gap: 40px;
  }
  .closing {
    padding-inline: 36px;
  }
}
@media (max-width: 800px) {
  html {
    scroll-padding-top: 25px;
  }
  .container {
    width: calc(100% - 48px);
  }
  .nav-wrap {
    height: auto;
    min-height: 83px;
    gap: 20px;
    flex-wrap: wrap;
    padding-block: 16px;
  }
  .brand {
    font-size: 29px;
  }
  .brand svg {
    width: 29px;
    height: 33px;
  }
  .menu-toggle {
    display: block;
    order: 2;
  }
  .nav-wrap .button-small {
    margin-left: auto;
  }
  .nav-wrap nav {
    order: 3;
    flex-basis: 100%;
    justify-content: space-between;
    border-top: 1px solid var(--line);
    padding-top: 10px;
    margin: 0;
  }
  .js .nav-wrap nav:not(.is-open) {
    display: none;
  }
  .hero {
    height: auto;
    min-height: 1060px;
    padding: 32px 24px 0;
  }
  .hero-topline .eyebrow {
    font-size: 9px;
  }
  .edition-tag {
    display: none;
  }
  .hero h1 {
    font-size: 91px;
    line-height: 1.01;
    max-width: 680px;
    margin-top: 31px;
  }
  .hero-copy {
    pointer-events: auto;
  }
  .hero-bottom-copy {
    margin-top: 29px;
    width: 100%;
    max-width: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 30px;
    align-items: start;
  }
  .hero-lead {
    grid-column: 1;
    font-size: 22px;
  }
  .hero-description {
    grid-column: 1;
    font-size: 13px;
    max-width: 280px;
    margin: 14px 0 0;
  }
  .hero-bottom-copy .button {
    grid-column: 2;
    grid-row: 1;
    font-size: 13px;
    align-self: center;
  }
  .hero-quote {
    grid-column: 2;
    grid-row: 2;
    display: flex;
    margin-top: 12px;
    justify-self: start;
  }
  .hero-figure {
    position: relative;
    top: auto;
    right: auto;
    width: calc(100% + 48px);
    height: 520px;
    margin: 0 -24px;
  }
  .hero-figure figcaption {
    left: 24px;
    right: 24px;
    bottom: 19px;
  }
  .scene-frame {
    inset: 0 0 40px;
  }
  .scene-ready canvas {
    display: none;
  }
  .scene-ready .scene-fallback {
    visibility: visible;
  }
  .hero-explorer {
    left: 24px;
    right: 24px;
    position: relative;
    left: auto;
    right: auto;
    min-height: 62px;
    gap: 20px;
  }
  .scene-controls button {
    font-size: 11px;
    padding: 7px 8px;
  }
  .scene-controls button > span {
    margin-right: 5px;
  }
  .explore-down {
    font-size: 10px;
    gap: 10px;
  }
  .hero-foot {
    padding: 35px 0;
    gap: 28px;
  }
  .hero-foot > p {
    font-size: 12px;
  }
  .hero-foot > span:first-child {
    font-size: 20px;
    flex-shrink: 0;
  }
  .section {
    padding-top: 75px;
    padding-bottom: 75px;
  }
  .section-heading {
    grid-template-columns: 1fr;
    gap: 18px;
    margin-bottom: 37px;
  }
  .section h2,
  .terminology-section h2 {
    font-size: 48px;
  }
  .section-number {
    padding-top: 0;
    font-size: 9px;
  }
  .section-heading p:not(.eyebrow) {
    font-size: 15px;
    margin-top: 20px;
  }
  .section-copy > p:not(.eyebrow) {
    max-width: 530px;
  }
  .section-copy h2 {
    margin: 20px 0 24px;
  }
  .options-grid {
    gap: 35px;
  }
  .option h3 {
    font-size: 28px;
  }
  .option > p {
    font-size: 14px;
  }
  .option .button {
    font-size: 12px;
    padding: 13px 14px;
    gap: 12px;
    width: 100%;
  }
  .option-bottom > span {
    font-size: 11px;
  }
  .faq-section {
    grid-template-columns: 1fr;
    gap: 30px;
    padding-top: 10px;
  }
  .faq-section h2 {
    font-size: 42px;
  }
  .closing {
    padding: 55px 24px 60px;
  }
  .closing h2 {
    font-size: 61px;
  }
  .closing-actions {
    gap: 27px;
  }
  .site-footer {
    gap: 19px;
    padding-block: 28px;
  }
  .site-footer > p {
    margin-left: auto;
  }
  .site-footer .footer-link {
    margin-left: auto;
    order: 4;
  }
}
@media (max-width: 480px) {
  .container {
    width: calc(100% - 40px);
  }
  .nav-wrap {
    gap: 10px;
    min-height: 117px;
    padding-block: 12px;
  }
  .brand {
    font-size: 28px;
  }
  .menu-toggle {
    order: 1;
    margin-left: auto;
  }
  .nav-wrap .button-small {
    order: 3;
    flex-basis: 100%;
    font-size: 12px;
    min-height: 38px;
    padding: 8px 14px;
  }
  .nav-wrap nav {
    order: 4;
  }
  .hero {
    padding: 27px 20px 0;
    min-height: 0;
  }
  .hero h1 {
    font-size: clamp(49px, 14.8vw, 71px);
    letter-spacing: -0.067em;
    margin-top: 27px;
  }
  .hero-topline .eyebrow {
    font-size: 8px;
    letter-spacing: 1px;
  }
  .hero-bottom-copy {
    display: block;
    margin-top: 29px;
  }
  .hero-lead {
    font-size: 23px;
    line-height: 1.3;
  }
  .hero-description {
    font-size: 12px;
    max-width: none;
    margin: 16px 0 23px;
  }
  .hero-bottom-copy .button {
    width: 100%;
    font-size: 13px;
    padding: 14px 18px;
  }
  .hero-quote {
    display: table;
    margin-top: 16px;
    font-size: 12px;
  }
  .hero-figure {
    width: calc(100% + 40px);
    margin: 0 -20px;
    height: 380px;
  }
  .scene-frame {
    inset: -12px -15px 40px;
  }
  .hero-figure figcaption {
    left: 20px;
    right: 20px;
    bottom: 17px;
    font-size: 10px;
    gap: 14px;
  }
  .scene-caption-number {
    font-size: 23px;
  }
  .artwork-note {
    font-size: 7px;
  }
  .hero-explorer {
    min-height: 58px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px 5px;
    padding: 9px 0;
  }
  .scene-controls {
    gap: 2px;
  }
  .scene-controls button {
    font-size: 10px;
    padding: 7px;
  }
  .scene-controls button > span {
    font-size: 8px;
    margin-right: 5px;
  }
  .explore-down {
    font-size: 0;
    gap: 0;
    margin-left: auto;
    padding: 5px 10px;
  }
  .explore-down span {
    font-size: 20px;
  }
  .hero-foot {
    padding: 31px 0;
    display: block;
  }
  .hero-foot > span:first-child {
    display: block;
    font-size: 24px;
    margin-bottom: 17px;
  }
  .hero-foot > p {
    font-size: 12px;
  }
  .hero-foot br {
    display: none;
  }
  .hero-foot > span:first-child br {
    display: block;
  }
  .section {
    padding-block: 63px;
  }
  .section h2,
  .terminology-section h2 {
    font-size: 39px;
    letter-spacing: -1.9px;
  }
  .section-heading {
    gap: 18px;
    margin-bottom: 34px;
  }
  .section-heading p:not(.eyebrow) {
    font-size: 14px;
    line-height: 1.65;
  }
  .desktop-break {
    display: none;
  }
  .section-copy > p:not(.eyebrow) {
    font-size: 14px;
  }
  .section-copy .quiet {
    font-size: 12px !important;
  }
  .options-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .option {
    padding-top: 21px;
  }
  .option h3 {
    font-size: 35px;
    margin-top: 25px;
  }
  .option .button {
    font-size: 13px;
    padding: 14px 18px;
  }
  .option-bottom {
    padding-top: 24px;
  }
  .faq-section {
    padding-top: 0;
  }
  .faq-section h2 {
    font-size: 38px;
  }
  summary {
    font-size: 14px;
    padding: 20px 0;
  }
  details > p {
    font-size: 13px;
  }
  .closing {
    padding: 45px 20px 49px;
  }
  .closing h2 {
    font-size: 43px;
    letter-spacing: -2.5px;
  }
  .closing .eyebrow {
    font-size: 8px;
  }
  .closing-actions {
    flex-wrap: wrap;
    gap: 22px;
  }
  .closing-actions .button {
    font-size: 13px;
    width: 100%;
  }
  .closing-actions .text-link {
    font-size: 13px;
  }
  .site-footer > p {
    font-size: 10px;
  }
  .site-footer .footer-link {
    margin-left: 0;
  }
  dialog {
    padding: 30px 23px;
    max-height: calc(100dvh - 24px);
  }
  dialog h2 {
    font-size: 27px;
  }
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .contact-notice {
    font-size: 11px !important;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
  .scene-ready canvas {
    display: none;
  }
  .scene-ready .scene-fallback {
    visibility: visible;
  }
}
/* Progressive enhancement: no WebGL or reduced motion means no pinned space. */
@media (min-width: 801px) and (prefers-reduced-motion: no-preference) {
  .hero-scroll.scroll-active {
    --hero-height: clamp(650px, 100svh, 800px);
    --scene-hold: 800px;
    height: calc(var(--hero-height) + clamp(3000px, 400svh, 5250px) + var(--scene-hold));
    position: relative;
    background: var(--studio);
  }
  .scroll-active .hero {
    position: sticky;
    top: 0;
    height: var(--hero-height);
    min-height: 650px;
  }
  .scroll-active .hero-explorer:before {
    content: "";
    position: absolute;
    top: -1px;
    left: 0;
    height: 2px;
    width: calc(var(--progress, 0) * 100%);
    background: var(--blue);
  }
}
@media (min-width: 801px) and (max-height: 800px) {
  .hero-scroll.scroll-active {
    --hero-height: max(610px, 100svh);
  }
  .scroll-active .hero {
    padding-top: 22px;
    height: 100svh;
    min-height: 610px;
  }
  .scroll-active .hero h1 {
    font-size: clamp(72px, 7vw, 102px);
    margin-top: 25px;
  }
  .scroll-active .hero-bottom-copy {
    margin-top: 27px;
  }
  .scroll-active .hero-lead {
    font-size: 21px;
  }
  .scroll-active .hero-description {
    margin: 12px 0 20px;
  }
  .scroll-active .hero-figure {
    height: calc(100% - 80px);
    top: 0;
  }
  .scroll-active .hero-figure figcaption {
    bottom: 3px;
  }
}

/* The five story stops remain reachable without horizontal scrolling. */
@media (max-width: 480px) {
  .scene-controls { flex-wrap: wrap; flex: 1; }
  .scene-controls button { flex: 1 0 28%; min-height: 38px; }
  .hero-explorer { align-items: flex-end; }
}

/* The process is an editorial sequence: one document beside four readable chapters. */
.process-section { padding-bottom: 70px; }
.process-intro { margin-bottom: 60px; }
.process-questions {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px;
  padding: 28px 0 32px; list-style: none;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.process-questions li > span { font-size: 9px; letter-spacing: 1px; color: var(--muted); }
.process-questions li p { margin-top: 15px; font-size: 20px; line-height: 1.35; letter-spacing: -.45px; color: var(--ink); }
.process-entry { display: flex; align-items: center; justify-content: space-between; gap: 25px; padding: 25px 0 65px; }
.process-entry p, .process-entry .text-link { font-size: 13px; }
.process-story { display: grid; grid-template-columns: .95fr 1.05fr; gap: clamp(55px, 8vw, 120px); align-items: start; scroll-margin-top: 30px; }
.process-visual { position: sticky; top: clamp(20px, calc((100svh - 610px) / 2), 80px); }
.process-nav { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); margin-bottom: 20px; }
.process-nav a { position: relative; padding: 13px 4px 10px; font-size: 10px; color: var(--muted); text-decoration: none; }
.process-nav a > span { display: block; font-size: 11px; margin-bottom: 4px; }
.process-nav a::before { content: ""; position: absolute; left: 0; right: 15px; top: -1px; height: 2px; background: var(--blue); transform: scaleX(0); transform-origin: left; }
.process-nav a[aria-current="step"] { color: var(--blue); }
.process-nav a[aria-current="step"]::before { transform: scaleX(1); }
.process-desk { position: relative; padding: 48px 22px 40px; background: var(--studio); }
.desk-index { position: absolute; top: 18px; left: 20px; font-size: 7px; letter-spacing: 1.4px; color: var(--muted); }
.process-paper {
  position: relative; width: min(330px, 86%, calc((100svh - 240px) * .71)); aspect-ratio: 3 / 4.2; margin: 0 auto;
  background: #fffefb; border-left: 4px solid #e2e5df;
  box-shadow: 3px 4px 0 #e8e9e2, 5px 6px 0 #d7dcd5, 0 15px 28px #19324c15;
  transform: rotate(-4deg);
}
.process-story[data-step="1"] .process-paper { transform: rotate(-1.5deg); }
.process-story[data-step="2"] .process-paper { transform: rotate(1deg); }
.process-story[data-step="3"] .process-paper { transform: rotate(0); }
.process-paper-panel { position: absolute; inset: 0; padding: 25px 24px; opacity: 0; visibility: hidden; transform: translateY(9px); }
.process-paper-panel.is-active { opacity: 1; visibility: visible; transform: translateY(0); }
.paper-running-head { display: flex; justify-content: space-between; gap: 8px; border-bottom: 1px solid var(--line); padding-bottom: 10px; font-size: 6px; letter-spacing: .65px; color: var(--muted); }
.paper-title { color: var(--ink); font-size: clamp(24px, 2.3vw, 32px); line-height: 1.06; letter-spacing: -1.15px; margin: 25px 0 18px; }
.paper-subtitle { font-size: 6px; letter-spacing: .7px; }
.paper-diagram { display: block; width: 100%; height: auto; max-height: 192px; margin: 17px auto 0; color: #6894ce; stroke-width: .9; }
.paper-bottom { display: flex; gap: 15px; align-items: center; position: absolute; bottom: 24px; left: 24px; right: 24px; border-top: 1px solid var(--line); padding-top: 11px; }
.paper-bottom > span { font-size: 27px; line-height: 1; letter-spacing: -1px; }
.paper-bottom p { font-size: 6px; line-height: 1.5; letter-spacing: .6px; }
.paper-excerpt > span, .paper-term > span { font-size: 6px; letter-spacing: .65px; color: var(--muted); }
.paper-excerpt p { font-size: clamp(13px, 1.13vw, 16px); line-height: 1.55; margin-top: 7px; color: var(--ink); }
.paper-direction { display: block; color: var(--blue); font-size: 21px; line-height: 1.1; margin: 10px 0; }
.paper-excerpt-blue { border-left: 2px solid var(--blue); padding-left: 12px; }
.paper-excerpt-blue p { color: var(--blue); }
.paper-term { margin-top: 23px; padding-bottom: 14px; border-bottom: 1px solid var(--line); margin-bottom: 18px; }
.paper-term p { font-size: clamp(15px, 1.4vw, 19px); color: var(--blue); margin-top: 7px; letter-spacing: -.3px; }
.paper-excerpt mark { color: var(--ink); background: #dfeeff; padding: 0 2px; box-decoration-break: clone; }
.paper-pencil-note { display: block; margin-top: 18px; font-size: 12px; color: var(--blue); font-style: italic; transform: rotate(-3deg); }
.paper-review { position: relative; margin-top: 28px; }
.paper-review p { font-size: clamp(12px, 1.03vw, 15px); line-height: 1.8; color: var(--ink); }
.paper-review p > span { border-bottom: 1px solid var(--blue); padding-bottom: 2px; }
.review-margin { position: absolute; right: -11px; top: 13px; color: var(--blue); font-size: 24px; }
.paper-review-note { font-size: 9px; margin-top: 22px; line-height: 1.6; }
.desk-footer { display: flex; justify-content: space-between; align-items: center; position: absolute; left: 20px; right: 20px; bottom: 13px; gap: 10px; font-size: 6px; letter-spacing: .65px; color: var(--muted); }
.desk-page-number { font-size: 8px; letter-spacing: 1px; color: var(--blue); }
.process-example-label { margin-top: 18px; font-size: 10px; color: var(--muted); }
.process-chapter { min-height: clamp(420px, 63svh, 610px); display: flex; flex-direction: column; justify-content: center; border-top: 1px solid var(--line); scroll-margin-top: 22svh; padding: 55px 0; }
.process-chapter:last-child { min-height: max(540px, 70svh); }
.process-kicker { display: flex; align-items: center; gap: 18px; font-size: 9px; letter-spacing: 1.5px; color: var(--muted); margin-bottom: 27px; }
.process-kicker > span { font-size: 22px; letter-spacing: -.8px; color: var(--muted); }
.process-chapter.is-current .process-kicker > span { color: var(--blue); }
.process-chapter h3 { font-weight: 400; font-size: clamp(30px, 3.3vw, 47px); line-height: 1.12; letter-spacing: -.05em; }
.process-description { font-size: 16px; line-height: 1.8; margin-top: 26px; max-width: 450px; }
.process-detail { margin-top: 27px; padding-left: 17px; border-left: 1px solid var(--blue); font-size: 11px; line-height: 1.7; color: var(--muted); }
.process-mobile-sample { display: none; }
.process-mobile-sample:empty { display: none; }
.process-end { display: flex; justify-content: space-between; align-items: center; gap: 50px; margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--line); }
.process-end p { max-width: 500px; font-size: 10px; line-height: 1.7; }
.process-end .text-link { font-size: 13px; flex-shrink: 0; }
.reveal-line { display: block; padding-bottom: .12em; margin-bottom: -.12em; }
.reveal-line > span { display: block; }
@media (prefers-reduced-motion: no-preference) {
  .process-paper { transition: transform 850ms cubic-bezier(.16,1,.3,1); }
  .process-paper-panel { transition: opacity 300ms ease, transform 500ms cubic-bezier(.16,1,.3,1), visibility 300ms; }
  .process-paper-panel.is-active { transition-delay: 130ms; }
  .process-nav a::before { transition: transform 550ms cubic-bezier(.16,1,.3,1); }
  .process-chapter .process-kicker > span { transition: color 350ms ease; }
  .process-motion [data-reveal] .reveal-copy, .process-motion [data-reveal] .reveal-eyebrow { opacity: 0; transform: translateY(12px); transition: opacity 700ms ease, transform 800ms cubic-bezier(.16,1,.3,1); }
  .process-motion [data-reveal] .reveal-copy { transition-delay: 190ms; }
  .process-motion [data-reveal] .process-detail { transition-delay: 270ms; }
  .process-motion [data-reveal].is-revealed .reveal-copy,
  .process-motion [data-reveal].is-revealed .reveal-eyebrow { transform: none; opacity: 1; }
  .process-motion .process-questions li { opacity: 0; transform: translateY(15px); transition: opacity 650ms ease, transform 750ms cubic-bezier(.16,1,.3,1); transition-delay: calc(var(--question-index) * 85ms); }
  .process-motion .process-questions.is-revealed li { opacity: 1; transform: none; }
}
@media (max-width: 1100px) and (min-width: 801px) {
  .process-story { gap: 45px; }
  .process-desk { padding-inline: 8px; }
  .process-paper-panel { padding: 20px 18px; }
  .paper-title { margin-top: 20px; }
  .paper-bottom { left: 18px; right: 18px; bottom: 18px; }
  .paper-diagram { max-height: 145px; }
  .paper-term { margin-top: 15px; margin-bottom: 12px; }
  .paper-pencil-note { font-size: 10px; margin-top: 13px; }
  .process-questions li p { font-size: 17px; }
  .process-description { font-size: 14px; }
}
@media (max-width: 800px) {
  .process-intro { margin-bottom: 33px; }
  .process-questions { grid-template-columns: 1fr 1fr; gap: 27px 25px; padding-block: 25px; }
  .process-questions li p { font-size: 19px; margin-top: 11px; }
  .process-entry { padding-bottom: 36px; }
  .process-story { display: block; }
  .process-visual { position: static; }
  .process-desk, .process-example-label { display: none; }
  .process-nav { margin-bottom: 0; }
  .process-nav a { padding-block: 13px 18px; }
  .process-chapter { min-height: 0; padding: 43px 0 48px; scroll-margin-top: 30px; display: grid; grid-template-columns: 1fr .75fr; gap: 25px; align-items: center; }
  .process-chapter:last-child { min-height: 0; }
  .process-kicker { margin-bottom: 19px; }
  .process-chapter h3 { font-size: 32px; }
  .process-description { font-size: 14px; line-height: 1.75; margin-top: 20px; }
  .process-detail { margin-top: 20px; font-size: 10px; }
  .process-mobile-sample { display: block; min-width: 0; position: relative; background: var(--studio); padding: 22px; }
  .process-mobile-sample .process-paper-panel { position: relative; width: 100%; opacity: 1; visibility: visible; transform: none; background: #fffefb; aspect-ratio: 3 / 4.2; min-height: 350px; padding: 18px; box-shadow: 3px 4px 0 #e1e5dd, 0 8px 18px #19324c0c; }
  .process-mobile-sample .paper-title { font-size: 23px; margin-top: 19px; }
  .process-mobile-sample .paper-bottom { left: 18px; right: 18px; bottom: 18px; }
  .process-mobile-sample .paper-diagram { max-height: 132px; }
  .process-mobile-sample .paper-excerpt p { font-size: 12px; }
  .process-mobile-sample .paper-term p { font-size: 15px; }
  .process-mobile-sample .paper-review p { font-size: 12px; }
  .process-mobile-sample .paper-pencil-note { font-size: 10px; }
  .process-end { display: block; margin-top: 0; }
  .process-end .text-link { display: inline-flex; margin-top: 22px; }
}
@media (max-width: 700px) {
  .process-questions { gap: 26px 16px; }
  .process-questions li > span { font-size: 7px; }
  .process-questions li p { font-size: 17px; }
  .process-entry { align-items: start; gap: 12px; flex-direction: column; }
  .process-entry p, .process-entry .text-link { font-size: 12px; }
  .process-chapter { display: block; padding-block: 37px; }
  .process-chapter h3 { font-size: 34px; }
  .process-description { max-width: 420px; }
  .process-mobile-sample { margin-top: 27px; padding: 23px 30px; }
  .process-mobile-sample .process-paper-panel { max-width: 265px; margin-inline: auto; min-height: 390px; }
  .process-mobile-sample .paper-title { font-size: 27px; }
  .process-mobile-sample .paper-excerpt p, .process-mobile-sample .paper-review p { font-size: 13px; }
  .process-mobile-sample .paper-diagram { max-height: 148px; }
  .process-mobile-sample .paper-excerpt > span, .process-mobile-sample .paper-term > span { display: block; line-height: 1.4; }
}
@media (prefers-reduced-motion: reduce) {
  .process-paper { transform: none !important; }
}
@media (min-width: 801px) and (max-height: 700px) {
  .process-paper-panel { padding: 20px 18px; }
  .paper-title { font-size: 24px; margin-top: 18px; }
  .paper-excerpt p { font-size: 13px; }
  .paper-review p { font-size: 12px; }
  .paper-term { margin-top: 15px; margin-bottom: 12px; }
  .paper-term p { font-size: 15px; }
  .paper-diagram { max-height: 135px; }
  .paper-pencil-note { font-size: 10px; margin-top: 13px; }
  .paper-bottom { left: 18px; right: 18px; bottom: 18px; }
}

/* The knowledge bridge connects the two documents; selection changes emphasis. */
.terminology-section { background: #f6f9fc; padding: 105px 0 58px; overflow: clip; }
.continuity-heading { display: grid; grid-template-columns: 1.35fr 1fr; gap: 65px; align-items: end; margin-bottom: 65px; }
.continuity-heading h2 { margin-top: 27px; font-size: clamp(40px, 4.5vw, 66px); }
.continuity-intro { max-width: 420px; padding-bottom: 4px; }
.continuity-intro p { font-size: 16px; line-height: 1.8; }
.continuity-intro p + p { font-size: 12px; margin-top: 16px; }
.continuity-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 30px; border-top: 1px solid #cbd8e4; padding-top: 18px; }
.continuity-toolbar > p { font-size: 9px; letter-spacing: 1.1px; }
.continuity-controls { display: flex; gap: 28px; }
.continuity-controls button { display: flex; align-items: center; gap: 22px; padding: 10px 0; min-height: 44px; border: 0; border-bottom: 2px solid transparent; background: transparent; font-size: 13px; color: var(--muted); }
.continuity-controls button span { font-size: 17px; }
.continuity-controls button[aria-pressed="true"] { color: var(--blue); border-bottom-color: var(--blue); }
.continuity-controls button:hover { color: var(--blue); }
.knowledge-map { display: grid; grid-template-columns: auto minmax(20px, 1fr) minmax(200px, 1.45fr) minmax(20px, 1fr) auto; gap: 16px; align-items: center; position: relative; padding: 39px 5% 45px; }
.knowledge-connector { position: relative; height: 18px; min-width: 0; }
.knowledge-line { display: block; width: calc(100% - 4px); height: 18px; fill: none; stroke-width: 1.5px; }
.knowledge-line path { vector-effect: non-scaling-stroke; }
.knowledge-arrow { position: absolute; width: 12px; height: 18px; right: 0; top: 0; fill: none; stroke: var(--blue); stroke-width: 1.5px; stroke-linecap: round; stroke-linejoin: round; }
.knowledge-pulse { position: absolute; left: 0; top: 5px; width: 8px; height: 8px; border-radius: 50%; background: var(--blue); opacity: 0; box-shadow: 0 0 0 4px #175cd315; }
.knowledge-track { display: none; }
.knowledge-connector::before { content: ""; position: absolute; top: calc(50% - .75px); left: 0; right: 4px; height: 1.5px; background: #c0d1e2; }
.knowledge-path { stroke: var(--blue); }
.knowledge-end, .knowledge-reference { position: relative; background: #f6f9fc; z-index: 1; }
.knowledge-end { width: fit-content; padding: 7px 15px; display: grid; grid-template-columns: auto 1fr; column-gap: 14px; align-items: center; }
.knowledge-source { justify-self: start; }
.knowledge-target { justify-self: end; }
.knowledge-letter { font-size: 44px; font-weight: 400; line-height: 1; letter-spacing: -2px; color: var(--blue); }
.knowledge-end > span:last-of-type { font-size: 8px; line-height: 1.65; letter-spacing: .6px; color: var(--muted); }
.knowledge-reference { border-radius: 2px; outline: 1px solid transparent; text-align: center; padding: 13px 16px; }
.knowledge-label { display: block; font-size: 8px; letter-spacing: 1.3px; color: var(--muted); }
.knowledge-reference strong { display: block; margin: 8px 0 14px; font-size: clamp(18px, 2vw, 28px); font-weight: 400; letter-spacing: -.65px; color: var(--blue); line-height: 1.3; }
.knowledge-ai { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font-size: 11px; line-height: 1.5; color: var(--ink); }
.knowledge-ai svg { flex: 0 0 20px; width: 20px; height: 20px; fill: none; stroke: var(--blue); stroke-width: 1.4; }
.continuity-documents { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 7vw, 105px); padding: 0 6%; }
.continuity-document { min-width: 0; }
.continuity-paper { display: flex; flex-direction: column; position: relative; background: #fffefb; border-left: 4px solid #e4e7e9; padding: 26px 31px 23px; min-height: 410px; transform: rotate(-1.5deg); box-shadow: 3px 4px 0 #e1e6e9, 5px 6px 0 #d1dbe2, 0 16px 35px #19324c0a; }
#continuity-manual-b .continuity-paper { transform: rotate(1.5deg); }
.continuity-document.is-selected .continuity-paper { transform: translateY(-5px) rotate(0deg) !important; box-shadow: 3px 4px 0 #d7e5f3, 5px 6px 0 #b5cde6, 0 18px 35px #19324c12; }
.continuity-running-head { display: flex; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--line); padding-bottom: 12px; font-size: 7px; letter-spacing: .6px; color: var(--muted); }
.continuity-paper-title { display: flex; justify-content: space-between; align-items: end; gap: 14px; margin-top: 24px; }
.continuity-paper-title p { font-size: 8px; letter-spacing: .85px; }
.continuity-paper-title h3 { margin-top: 4px; font-size: 35px; font-weight: 400; letter-spacing: -1.6px; line-height: 1.2; }
.continuity-paper-title > span { font-size: 65px; line-height: 1; color: #d2e0ed; font-weight: 400; letter-spacing: -4px; }
.continuity-excerpt { margin-top: 35px; }
.continuity-chapter { font-size: 8px; letter-spacing: 1px; margin-bottom: 12px; }
.continuity-sentence { color: var(--ink); font-size: clamp(18px, 1.6vw, 23px); line-height: 1.6; letter-spacing: -.4px; }
.continuity-sentence mark { background: linear-gradient(#dcecff, #dcecff) no-repeat left center; background-size: 100% 100%; border: 0; border-bottom: 1px solid #6b9ddd; padding: 1px 2px; color: var(--deep); }
.continuity-margin-note { display: flex; align-items: center; gap: 10px; margin: 21px 0 29px; }
.continuity-margin-note > svg { flex: 0 0 18px; width: 18px; height: 18px; fill: none; stroke: var(--blue); stroke-width: 1.35; stroke-linecap: round; stroke-linejoin: round; }
.continuity-margin-note p { font-size: 11px; line-height: 1.5; font-style: italic; color: var(--blue); }
.continuity-paper-foot { display: flex; justify-content: space-between; gap: 18px; padding-top: 13px; border-top: 1px solid var(--line); margin-top: auto; font-size: 7px; letter-spacing: .7px; color: var(--muted); }
.continuity-document-caption { display: flex; gap: 14px; padding-top: 25px; font-size: 11px; line-height: 1.5; }
.continuity-document-caption > span { color: var(--blue); font-size: 10px; }
.continuity-explanation { display: grid; grid-template-columns: .3fr 1fr; gap: 30px; align-items: start; max-width: 820px; margin: 47px auto 0; padding: 27px 0 0; border-top: 1px solid #cbd8e4; }
.continuity-explanation-index { white-space: nowrap; color: var(--blue); font-size: 43px; line-height: 1.2; letter-spacing: -2px; }
.continuity-explanation h3 { font-size: 19px; line-height: 1.5; letter-spacing: -.4px; font-weight: 400; margin-bottom: 9px; }
.continuity-explanation p { font-size: 13px; line-height: 1.8; min-height: 48px; }
.continuity-end { display: flex; justify-content: space-between; align-items: start; gap: 50px; border-top: 1px solid #cbd8e4; padding-top: 23px; margin-top: 47px; }
.continuity-end p { font-size: 10px; line-height: 1.7; max-width: 510px; }
.continuity-end .text-link { font-size: 12px; flex-shrink: 0; }
@media (prefers-reduced-motion: no-preference) {
  .continuity-paper { transition: transform 750ms cubic-bezier(.16,1,.3,1), box-shadow 750ms ease; }
  .continuity-controls button { transition: color 200ms ease, border-color 200ms ease; }
  .terminology-motion [data-term-reveal] .reveal-copy, .terminology-motion [data-term-reveal] .reveal-eyebrow { opacity: 0; transform: translateY(12px); transition: opacity 700ms ease, transform 800ms cubic-bezier(.16,1,.3,1); }
  .terminology-motion [data-term-reveal] .reveal-copy { transition-delay: 190ms; }
  .terminology-motion [data-term-reveal].is-revealed .reveal-copy,
  .terminology-motion [data-term-reveal].is-revealed .reveal-eyebrow { opacity: 1; transform: none; }
}
@media (max-width: 1100px) {
  .continuity-heading { gap: 40px; grid-template-columns: 1.25fr 1fr; }
  .continuity-heading h2 { font-size: 47px; }
  .continuity-intro p { font-size: 14px; }
  .continuity-documents { padding-inline: 2%; gap: 45px; }
  .continuity-paper { padding-inline: 24px; }
  .knowledge-map { padding-inline: 0; grid-template-columns: auto minmax(18px, 1fr) minmax(195px, 1.5fr) minmax(18px, 1fr) auto; gap: 10px; }
  .knowledge-end { column-gap: 9px; padding-inline: 10px; }
  .knowledge-end > span:last-of-type { font-size: 7px; }
  .knowledge-letter { font-size: 37px; }
}
@media (max-width: 800px) {
  .terminology-section { padding-top: 65px; }
  .continuity-heading { display: block; margin-bottom: 35px; }
  .continuity-heading h2 { margin-top: 20px; font-size: 48px; }
  .continuity-intro { margin-top: 23px; max-width: 500px; }
  .continuity-intro p + p { margin-top: 10px; }
  .continuity-toolbar { gap: 20px; }
  .continuity-toolbar > p { max-width: 230px; font-size: 8px; }
  .continuity-controls { gap: 20px; }
  .continuity-controls button { gap: 13px; white-space: nowrap; }
  .continuity-paper { padding-inline: 20px; min-height: 415px; }
  .continuity-paper-title h3 { font-size: 29px; }
  .continuity-paper-title > span { font-size: 52px; }
  .continuity-sentence { font-size: 18px; }
  .knowledge-end { display: block; text-align: center; }
  .knowledge-letter { display: block; margin-bottom: 7px; }
  .knowledge-end > span:last-of-type { display: block; }
  .knowledge-reference { padding-inline: 12px; }
  .knowledge-ai { font-size: 10px; gap: 5px; }
  .knowledge-label { font-size: 7px; letter-spacing: .7px; }
  .continuity-end { display: block; margin-top: 35px; }
  .continuity-end .text-link { display: inline-flex; margin-top: 22px; }
}
@media (max-width: 700px) {
  .continuity-heading h2 { font-size: clamp(35px, 7.3vw, 48px); }
  .continuity-toolbar { flex-direction: column; align-items: stretch; gap: 8px; }
  .continuity-toolbar > p { max-width: none; font-size: 7px; }
  .continuity-controls { justify-content: space-between; gap: 20px; }
  .continuity-controls button { flex: 1; justify-content: space-between; font-size: 13px; }
  .knowledge-map { grid-template-columns: 24px minmax(14px, 1fr) minmax(0, 190px) minmax(14px, 1fr) 24px; gap: 4px; padding: 23px 0 30px; }
  .knowledge-end { padding: 7px 0; }
  .knowledge-end > span:last-of-type { display: none; }
  .knowledge-letter { font-size: 26px; margin: 0; }
  .knowledge-reference { padding-inline: 5px; margin-inline: 0; }
  .knowledge-reference strong { font-size: clamp(17px, 4vw, 23px); margin-block: 8px 11px; }
  .knowledge-label { font-size: 7px; letter-spacing: .45px; }
  .knowledge-ai { font-size: 11px; gap: 5px; }
  .knowledge-ai svg { flex-basis: 17px; width: 17px; height: 17px; }
  .continuity-documents { display: block; padding-inline: 6px; max-width: 440px; margin-inline: auto; }
  .continuity-document + .continuity-document { margin-top: 35px; }
  .js .continuity-document + .continuity-document { margin-top: 0; }
  .continuity-paper, #continuity-manual-b .continuity-paper, .continuity-document.is-selected .continuity-paper { transform: none !important; min-height: 385px; padding: 25px 26px 20px; }
  .continuity-paper-title h3 { font-size: 34px; }
  .continuity-excerpt { margin-top: 27px; }
  .continuity-sentence { font-size: 21px; }
  .continuity-document-caption { padding-top: 20px; }
  .continuity-explanation { grid-template-columns: 52px 1fr; gap: 16px; margin-top: 30px; padding-top: 23px; min-height: 190px; }
  .continuity-explanation-index { font-size: 28px; }
  .continuity-explanation h3 { font-size: 18px; }
  .continuity-explanation p { font-size: 12px; }
}
@media (max-width: 370px) {
  .continuity-paper { padding-inline: 20px; }
  .continuity-running-head { font-size: 6px; letter-spacing: .25px; }
  .continuity-sentence { font-size: 19px; }
  .knowledge-reference { margin-inline: 0; }
  .knowledge-ai { font-size: 10px; gap: 3px; }
  .knowledge-ai svg { flex-basis: 15px; }
}
@media (prefers-reduced-motion: reduce) {
  .continuity-paper, #continuity-manual-b .continuity-paper, .continuity-document.is-selected .continuity-paper { transform: none !important; }
}

/* A timed border is separate from selection and never changes paper dimensions. */
.continuity-paper-outline { position: absolute; inset: -1px; border: 2px solid var(--blue); pointer-events: none; opacity: 0; box-shadow: 0 0 0 4px #175cd30b; }
.continuity-document.is-selected .continuity-paper-outline { opacity: 1; }
.knowledge-replay { display: flex; align-items: center; gap: 9px; margin: 28px auto 0; padding: 8px 0; border: 0; border-bottom: 1px solid #b5cde6; background: transparent; font-size: 12px; min-height: 44px; color: var(--blue); }
.knowledge-replay svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
@media (max-width: 700px) {
  .knowledge-map .knowledge-reference strong { font-size: 17px; }
  .knowledge-map .knowledge-ai { font-size: 10px; }
  .knowledge-map .knowledge-label { font-size: 6px; }
}

.knowledge-playback { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 10px 24px; margin-top: 28px; }
.knowledge-playback .knowledge-replay { margin: 0; }
.knowledge-pause { min-height: 44px; padding: 8px 0; background: transparent; border: 0; border-bottom: 1px solid #b5cde6; font-size: 12px; color: var(--blue); }

/* Human review: an editorial proof, with room to read before and after. */
.human-section { display: grid; grid-template-columns: .85fr 1.15fr; align-items: center; gap: clamp(55px, 7vw, 105px); padding-block: 115px; }
.human-copy h2 { margin: 25px 0 30px; font-size: clamp(48px, 5.1vw, 73px); }
.human-lead { color: var(--ink); font-size: 21px; line-height: 1.5; letter-spacing: -.45px; }
.human-description { margin-top: 21px; font-size: 15px; line-height: 1.8; max-width: 420px; }
.human-attentions { margin: 30px 0; padding: 0; border-top: 1px solid var(--line); }
.human-attentions > div { display: grid; grid-template-columns: 95px 1fr; gap: 18px; padding-block: 14px; border-bottom: 1px solid var(--line); }
.human-attentions dt { font-size: 12px; font-weight: 500; color: var(--ink); }
.human-attentions dd { margin: 0; font-size: 12px; line-height: 1.65; color: var(--muted); }
.human-request p { font-size: 11px; line-height: 1.7; max-width: 340px; }
.human-request .text-link { margin-top: 20px; }
.human-example { min-width: 0; }
.proof-desk { position: relative; padding: 56px 37px 49px; background: var(--studio); }
.proof-desk-head, .proof-desk-foot { position: absolute; left: 24px; right: 24px; display: flex; justify-content: space-between; align-items: center; gap: 15px; font-size: 7px; letter-spacing: 1px; color: var(--muted); }
.proof-desk-head { top: 19px; }
.proof-desk-foot { bottom: 17px; font-size: 6px; }
.proof-desk-foot > span:last-child { color: var(--blue); font-size: 20px; line-height: 1; }
.proof-paper { position: relative; background: #fffefb; padding: 27px 30px 22px; box-shadow: 3px 4px 0 #e3e6df, 5px 6px 0 #d8ddd5, 0 16px 35px #19324c10; border-left: 3px solid #e6e8e0; }
.proof-running-head { display: flex; justify-content: space-between; border-bottom: 1px solid var(--line); padding-bottom: 12px; font-size: 7px; letter-spacing: .75px; color: var(--muted); }
.proof-title-row { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; margin-top: 20px; }
.proof-title-row h3 { font-size: 32px; line-height: 1.3; letter-spacing: -1.3px; font-weight: 400; }
.proof-title-row > span { font-size: 6px; letter-spacing: .65px; color: var(--muted); text-align: right; }
.proof-chapter { font-size: 7px; letter-spacing: .75px; margin: 30px 0 18px; }
.proof-versions { display: grid; gap: 25px; }
.proof-version-label { font-size: 7px; letter-spacing: 1px; color: var(--muted); margin-bottom: 12px; }
.proof-sentence { font-size: clamp(20px, 1.8vw, 26px); line-height: 1.6; color: var(--ink); letter-spacing: -.45px; }
.proof-sentence mark { font-size: inherit; padding: 0 2px; }
.proof-wordy { text-decoration: underline; text-decoration-style: dashed; text-decoration-color: #8aabc6; text-decoration-thickness: 1px; text-underline-offset: 6px; }
.proof-direct { color: var(--blue); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 6px; }
.proof-enhanced .proof-versions { gap: 0; }
.proof-enhanced .proof-version { grid-area: 1 / 1; opacity: 0; visibility: hidden; transform: translateY(8px); }
.proof-enhanced .proof-version.is-active { opacity: 1; visibility: visible; transform: none; }
.proof-annotation { display: flex; justify-content: flex-end; align-items: start; gap: 13px; padding: 17px 10px 22px 0; }
.proof-note-arrow { width: 35px; height: 39px; fill: none; stroke: var(--blue); stroke-width: 1.2; stroke-linecap: round; stroke-linejoin: round; }
.proof-annotation p { font-size: 17px; line-height: 1.4; letter-spacing: -.3px; font-style: italic; color: var(--blue); transform: rotate(-3deg); }
.proof-term-note { display: flex; align-items: start; gap: 12px; border-top: 1px solid #d5e3ed; padding-top: 16px; margin-bottom: 28px; }
.proof-term-note > span { font-size: 9px; color: var(--blue); }
.proof-term-note p { font-size: 11px; line-height: 1.7; max-width: 260px; }
.proof-paper-footer { display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); padding-top: 12px; font-size: 6px; letter-spacing: .65px; color: var(--muted); }
.proof-interaction { display: flex; align-items: start; justify-content: space-between; gap: 28px; margin-top: 27px; }
.proof-toggle { flex-shrink: 0; font-size: 12px; min-height: 44px; }
.proof-state { font-size: 10px; line-height: 1.7; max-width: 225px; padding-top: 4px; min-height: 55px; }
.proof-example-note { font-size: 9px; margin-top: 12px; color: var(--muted); }
@media (prefers-reduced-motion: no-preference) {
  .proof-enhanced .proof-version { transition: opacity 300ms ease, transform 550ms cubic-bezier(.16,1,.3,1), visibility 300ms; }
  .proof-enhanced .proof-version.is-active { transition-delay: 120ms; }
  .human-motion [data-human-reveal] .reveal-copy, .human-motion [data-human-reveal] .reveal-eyebrow { opacity: 0; transform: translateY(12px); transition: opacity 700ms ease, transform 800ms cubic-bezier(.16,1,.3,1); }
  .human-motion [data-human-reveal] .reveal-copy { transition-delay: 190ms; }
  .human-motion [data-human-reveal].is-revealed .reveal-copy,
  .human-motion [data-human-reveal].is-revealed .reveal-eyebrow { opacity: 1; transform: none; }
  .human-motion .proof-note-arrow { clip-path: inset(0 0 100% 0); transition: clip-path 950ms cubic-bezier(.16,1,.3,1) 350ms; }
  .human-motion .proof-annotation p { opacity: 0; transform: translateY(6px) rotate(-3deg); transition: opacity 650ms ease 650ms, transform 750ms cubic-bezier(.16,1,.3,1) 650ms; }
  .human-motion .proof-desk.is-revealed .proof-note-arrow { clip-path: inset(0); }
  .human-motion .proof-desk.is-revealed .proof-annotation p { opacity: 1; transform: rotate(-3deg); }
}
@media (max-width: 1100px) {
  .human-section { gap: 45px; grid-template-columns: .85fr 1.15fr; }
  .human-copy h2 { font-size: 54px; }
  .human-lead { font-size: 19px; }
  .human-description { font-size: 14px; }
  .proof-desk { padding-inline: 23px; }
  .proof-paper { padding-inline: 23px; }
  .proof-title-row { display: block; }
  .proof-title-row > span { display: block; margin-top: 8px; text-align: left; }
  .proof-interaction { display: block; }
  .proof-state { margin-top: 13px; max-width: none; min-height: 38px; }
}
@media (max-width: 800px) {
  .human-section { grid-template-columns: 1fr; gap: 45px; padding-block: 70px; }
  .human-copy { max-width: 540px; }
  .human-copy h2 { font-size: 52px; margin-block: 20px 25px; }
  .human-description { max-width: 500px; }
  .human-attentions { max-width: 500px; }
  .human-example { width: 100%; max-width: 600px; margin-inline: auto; }
  .proof-desk { padding-inline: 38px; }
  .proof-paper { padding-inline: 30px; }
  .proof-title-row { display: flex; }
  .proof-sentence { font-size: 25px; }
  .proof-interaction { display: flex; }
  .proof-state { margin-top: 0; max-width: 225px; min-height: 55px; }
}
@media (max-width: 480px) {
  .human-section { padding-block: 60px; gap: 34px; }
  .human-copy h2 { font-size: 47px; }
  .human-lead { font-size: 19px; }
  .human-attentions > div { grid-template-columns: 86px 1fr; gap: 13px; }
  .human-attentions dt, .human-attentions dd { font-size: 11px; }
  .proof-desk { padding: 42px 17px 40px; }
  .proof-desk-head, .proof-desk-foot { left: 17px; right: 17px; font-size: 6px; letter-spacing: .6px; }
  .proof-paper { padding: 22px 19px 19px; }
  .proof-title-row { display: block; margin-top: 16px; }
  .proof-title-row h3 { font-size: 30px; }
  .proof-running-head { font-size: 6px; letter-spacing: .5px; }
  .proof-chapter { font-size: 6px; margin-top: 24px; }
  .proof-sentence { font-size: 22px; line-height: 1.6; }
  .proof-annotation { padding-right: 0; gap: 6px; }
  .proof-annotation p { font-size: 15px; }
  .proof-note-arrow { width: 29px; }
  .proof-term-note p { font-size: 10px; }
  .proof-paper-footer { font-size: 5px; letter-spacing: .3px; }
  .proof-interaction { display: block; margin-top: 20px; }
  .proof-state { margin-top: 12px; max-width: none; min-height: 35px; }
}

/* One motion language for section titles, independently triggered by visibility. */
@media (prefers-reduced-motion: no-preference) {
  .section-title-motion .reveal-line { overflow: clip; }
  .section-title-motion .reveal-line > span { opacity: 0; transform: translateY(115%); transition: transform 1200ms cubic-bezier(.16,1,.3,1), opacity 850ms ease; transition-delay: 80ms; }
  .section-title-motion .reveal-line:nth-child(2) > span { transition-delay: 260ms; }
  .section-title-motion.is-title-visible .reveal-line > span { opacity: 1; transform: none; }
}

/* Reserve the controls row before sizing the desktop scene and its caption. */
@media (min-width: 801px) {
  .hero { --hero-figure-top: 5px; --hero-controls-height: 69px; }
  .hero-figure {
    top: var(--hero-figure-top);
    max-height: calc(100% - var(--hero-figure-top) - var(--hero-controls-height) - 20px);
  }
}
@media (min-width: 1600px) {
  .hero { --hero-figure-top: -12px; }
}
@media (min-width: 801px) and (max-width: 1100px) {
  .hero { --hero-figure-top: 44px; }
}
@media (min-width: 801px) and (max-height: 800px) {
  .scroll-active .hero { --hero-figure-top: 0px; }
}

/* Closing signature: a real wireframe, separated from the HTML message. */
.closing { display: grid; grid-template-columns: 1.35fr 1fr; align-items: center; gap: 35px; min-height: 520px; padding-block: 65px; }
.closing-copy { position: relative; z-index: 1; min-width: 0; }
.closing h2 { font-size: clamp(42px, 4.6vw, 72px); margin: 25px 0 24px; }
.closing-description { font-size: 15px; max-width: 420px; line-height: 1.8; margin-bottom: 31px; }
.closing-actions { flex-wrap: wrap; gap: 20px 28px; }
.closing-art { position: relative; min-width: 0; }
.closing-prism { position: relative; width: 100%; height: 440px; }
.closing-prism canvas, .closing-prism-fallback { position: absolute; inset: 0; display: block; width: 100%; height: 100%; }
.closing-prism-ready .closing-prism-fallback { visibility: hidden; }
@media (max-width: 1100px) {
  .closing { grid-template-columns: 1.35fr 1fr; gap: 20px; padding-inline: 36px; }
  .closing h2 { font-size: 48px; }
  .closing-prism { height: 370px; }
  .closing-actions .button { font-size: 13px; }
  .closing-actions .text-link { font-size: 12px; }
}
@media (max-width: 800px) {
  .closing { grid-template-columns: 1fr; gap: 5px; padding: 55px 24px 32px; }
  .closing h2 { font-size: clamp(40px, 7vw, 57px); }
  .closing-prism { height: 310px; max-width: 400px; margin-inline: auto; }
  .closing-art { margin-top: 12px; }
}
@media (max-width: 480px) {
  .closing { padding: 45px 20px 28px; }
  .closing h2 { font-size: 43px; letter-spacing: -2px; }
  .closing-description { font-size: 13px; }
  .closing-prism { height: 270px; }
}

/* On touch screens the introduction scrolls away before the 3D story pins. */
.hero-story, .hero-stage { display: contents; }
@media (max-width: 800px) and (prefers-reduced-motion: no-preference),
       (max-width: 1024px) and (max-height: 500px) and (prefers-reduced-motion: no-preference) {
  .hero-scroll.scroll-active {
    height: auto;
    --scene-hold: 400px;
    --mobile-stage-height: 100svh;
    background: var(--studio);
  }
  .scroll-active .hero { overflow: visible; position: relative; top: auto; min-height: 0; height: auto; padding: 32px 24px 0; }
  .scroll-active .hero-story {
    display: block;
    position: relative;
    height: calc(var(--mobile-stage-height) + clamp(2200px, 360svh, 3600px) + var(--scene-hold));
    margin: 28px -24px 0;
  }
  .scroll-active .hero-stage {
    display: grid;
    grid-template-rows: minmax(0, 1fr) auto;
    position: sticky;
    top: 0;
    height: var(--mobile-stage-height);
    padding: max(12px, env(safe-area-inset-top)) 24px max(12px, env(safe-area-inset-bottom));
    background: var(--studio);
  }
  .scroll-active .hero-explorer::before { display: none; }
  .scroll-active .hero-stage::before {
    content: ""; position: absolute; top: 0; left: 0;
    width: calc(var(--progress, 0) * 100%); height: 2px; background: var(--blue);
  }
  .scroll-active .hero-figure {
    position: relative; inset: auto; margin: 0;
    width: 100%; height: 100%; min-height: 0; max-height: none;
  }
  .scroll-active .scene-frame { inset: 0 -24px 85px; }
  .scroll-active .scene-ready canvas { display: block; }
  .scroll-active .scene-ready .scene-fallback { visibility: hidden; }
  .scroll-active .hero-figure figcaption {
    left: 0; right: 0; bottom: 18px; min-height: 50px;
    font-size: 11px; gap: 12px; padding-top: 14px;
  }
  .scroll-active .hero-explorer {
    position: relative; inset: auto; width: 100%;
    display: grid; grid-template-columns: minmax(0, 1fr) 44px;
    align-items: center; gap: 8px; min-height: 0; padding: 12px 0 0;
  }
  .scroll-active .explorer-label { display: block; grid-column: 1 / -1; font-size: 8px; }
  .scroll-active .scene-controls { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 4px; }
  .scroll-active .scene-controls button { min-height: 44px; padding: 7px 4px; font-size: 10px; white-space: nowrap; }
  .scroll-active .scene-controls button > span { font-size: 8px; margin-right: 4px; }
  .scroll-active .explore-down { font-size: 0; gap: 0; margin: 0; padding: 0; width: 44px; min-height: 44px; justify-content: center; }
  .scroll-active .explore-down span { font-size: 22px; }
}
@media (max-width: 480px) and (prefers-reduced-motion: no-preference) {
  .scroll-active .hero { padding-inline: 20px; }
  .scroll-active .hero-story { margin-inline: -20px; }
  .scroll-active .hero-stage { padding-inline: 20px; }
  .scroll-active .scene-frame { inset-inline: -20px; }
}
@media (max-width: 1024px) and (max-height: 500px) and (prefers-reduced-motion: no-preference) {
  .scroll-active .hero h1 { font-size: 64px; }
  .scroll-active .hero-stage { grid-template-columns: minmax(0, 1fr) 160px; grid-template-rows: minmax(0, 1fr); gap: 16px; }
  .scroll-active .hero-explorer { display: flex; flex-direction: column; justify-content: center; align-items: stretch; border-top: 0; border-left: 1px solid var(--line); padding: 0 0 0 12px; }
  .scroll-active .scene-controls { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .scroll-active .scene-controls button { white-space: normal; }
  .scroll-active .scene-frame { inset: 0 0 75px; }
  .scroll-active .artwork-note { display: none; }
}

@media (max-width: 800px) and (prefers-reduced-motion: no-preference) {
  .process-motion .process-mobile-sample .process-paper-panel {
    transform: translateY(var(--paper-drift, 0px));
  }
}