:root {
  color-scheme: light;
  --paper: #fbfbf8;
  --paper-deep: #f0f2f9;
  --ink: #131727;
  --text: #313647;
  --muted: #565d72;
  --line: #ccd2e3;
  --blue: #0733b1;
  --blue-ink: #062eaa;
  --accent: #0733b1;
  --accent-light: #dbe5ff;
  --on-blue-muted: #e3eaff;
  --on-blue-line: #6684dd;
  --display: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --sans: Inter, "Helvetica Neue", Arial, sans-serif;
  --gutter: clamp(22px, 5.1vw, 82px);
  --header-height: 74px;
  --section-space: clamp(54px, 7vw, 112px);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 18px);
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: #dce5ff;
  color: #082764;
}

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

button,
input,
select {
  font: inherit;
}

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

figure,
h1,
h2,
h3,
p {
  margin: 0;
}

h1,
h2,
h3 {
  font-family: var(--display);
  font-weight: 400;
  line-height: 1.07;
}

h2 {
  font-size: clamp(42px, 5.15vw, 78px);
  letter-spacing: -.058em;
}

h3 {
  font-size: clamp(27px, 3vw, 42px);
  letter-spacing: -.045em;
}

h1 em,
h2 em {
  font-weight: inherit;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--focus, var(--accent));
  outline-offset: 5px;
}

[hidden] {
  display: none !important;
}

.shell {
  width: min(calc(100% - 2 * var(--gutter)), 1440px);
  margin-inline: auto;
}

.skip {
  position: fixed;
  top: -120px;
  left: 18px;
  z-index: 50;
  padding: 10px 16px;
  background: var(--paper);
  color: var(--ink);
}

.skip:focus {
  top: 12px;
}

.eyebrow,
.project-role,
.paper-source,
.talk-top,
.talk-date,
.archive-meta,
.archive-date,
.archive-topics {
  font-size: .77rem;
  line-height: 1.5;
  letter-spacing: .045em;
}

.eyebrow,
.project-role,
.paper-source,
.talk-top {
  text-transform: uppercase;
}

.arrow-icon {
  width: .9em;
  height: .9em;
  flex: 0 0 auto;
  vertical-align: -.04em;
}

.contact-section,
.research-footer {
  --focus: var(--accent-light);
  background: var(--blue);
  color: var(--paper);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  flex: 0 0 auto;
  font: 23px/1.15 var(--display);
  letter-spacing: -.035em;
}

.wordmark-mark {
  width: 8px;
  height: 8px;
  background: var(--blue);
}

.site-header nav {
  display: flex;
  gap: clamp(14px, 1.9vw, 30px);
  align-items: center;
  font-size: .86rem;
}

.site-header nav a {
  padding-block: 8px;
}

.site-header nav a:hover,
.site-header nav a[aria-current="page"] {
  color: var(--blue);
}

.site-header nav a[aria-current="page"] {
  text-decoration: underline;
  text-underline-offset: 6px;
}

.menu-toggle {
  display: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, .98fr) minmax(0, 1.02fr);
  gap: clamp(27px, 4.3vw, 76px);
  align-items: center;
  padding: clamp(28px, 3vw, 48px) 0 clamp(40px, 4vw, 70px);
}

.hero-copy {
  padding-block: 22px;
}

.hero h1 {
  margin-bottom: 25px;
  font-size: clamp(45px, 6.13vw, 102px);
  line-height: .98;
  letter-spacing: -.065em;
}

.hero h1 em {
  color: var(--blue);
  letter-spacing: -.075em;
}

.hero-intro {
  max-width: 43ch;
  color: var(--text);
  font-size: clamp(16px, 1.46vw, 20px);
  line-height: 1.6;
}

.hero-role {
  margin-top: 23px;
  color: var(--muted);
  font-size: .89rem;
  line-height: 1.85;
}

.hero-role a,
.project-links a,
.source-links a,
.timeline-list a,
.socials a {
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px 22px;
  margin-top: 31px;
}

.primary-link,
.text-link,
.small-link {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  width: fit-content;
  font-size: .85rem;
  line-height: 1.35;
}

.primary-link {
  background: var(--blue);
  color: white;
  padding: 12px 15px;
  transition: background .18s;
}

.primary-link:hover {
  background: #041f77;
}

.text-link,
.small-link {
  padding-bottom: 4px;
  border-bottom: 1px solid currentColor;
}

.text-link:hover,
.small-link:hover,
.feature-index a:hover,
.source-links a:hover,
.timeline-list a:hover {
  color: var(--link-accent, var(--accent));
}

.work-section,
.contact-section {
  --link-accent: var(--accent-light);
}

.hero-art {
  min-width: 0;
  height: clamp(465px, 49vw, 730px);
  overflow: hidden;
  background: var(--blue);
}

.hero-art picture,
.hero-art img {
  width: 100%;
  height: 100%;
}

.hero-art img,
.study-art img,
.page-art img {
  object-fit: cover;
}

.hero-art img {
  object-position: center 48%;
}

.thinking-feature,
.work-section,
.writing-section,
.conversation-section,
.about-section {
  padding-block: var(--section-space);
}

.thinking-feature {
  border-top: 1px solid var(--line);
  background: #f7f8fd;
}

.feature-grid {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  align-items: start;
  gap: clamp(38px, 8.1vw, 120px);
}

.feature-copy {
  padding-top: clamp(0px, 2.2vw, 30px);
}

.feature-copy .eyebrow {
  color: var(--accent);
  margin-bottom: 20px;
}

.feature-copy h2 {
  max-width: 13ch;
  margin-bottom: 25px;
}

.feature-copy h2 em {
  color: var(--blue-ink);
}

.feature-copy > p:not(.eyebrow),
.about-intro > p,
.section-heading > p {
  max-width: 48ch;
  color: var(--text);
  font-size: 1.04rem;
  line-height: 1.7;
}

.feature-copy > .text-link {
  margin-top: 26px;
}

.study-art,
.page-art {
  background: var(--paper-deep);
  overflow: hidden;
}

.study-art img,
.page-art img {
  width: 100%;
  height: 100%;
}

.study-art {
  aspect-ratio: 2;
}

.feature-index,
.thinking-index ul,
.source-links,
.timeline-list,
.archive-list {
  padding: 0;
  list-style: none;
}

.feature-index {
  margin: 24px 0 0;
  border-top: 1px solid var(--line);
}

.feature-index a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  font: clamp(19px, 1.9vw, 28px)/1.22 var(--display);
  letter-spacing: -.02em;
}

.feature-index a span {
  font: 17px var(--sans);
}

.work-section {
  --focus: var(--accent-light);
  background: var(--blue);
  color: var(--paper);
}

.section-heading,
.section-top {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: clamp(27px, 4vw, 58px);
}

.section-heading > p {
  color: var(--on-blue-muted);
  max-width: 30ch;
  padding-bottom: 5px;
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-block: 1px solid var(--on-blue-line);
}

.work-item {
  display: flex;
  align-items: start;
  flex-direction: column;
  min-width: 0;
  padding: 29px clamp(18px, 2.5vw, 38px) 33px;
}

.work-item + .work-item {
  border-left: 1px solid var(--on-blue-line);
}

.work-item:first-child {
  padding-left: 0;
}

.work-item:last-child {
  padding-right: 0;
}

.project-role {
  color: var(--on-blue-muted);
  margin-bottom: 13px;
}

.work-item h3 {
  margin-bottom: 16px;
}

.work-item > p:not(.project-role) {
  color: #f1f4ff;
  margin-bottom: 23px;
  font-size: .98rem;
}

.work-item .text-link {
  margin-top: auto;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin-top: 24px;
  font-size: .84rem;
}

.project-links span {
  color: var(--on-blue-muted);
}

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

.paper {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr) 25px;
  gap: clamp(16px, 3vw, 45px);
  align-items: start;
  padding-block: 24px;
  border-bottom: 1px solid var(--line);
}

.paper:hover h3 {
  color: var(--accent);
}

.paper-year,
.journey-row > span {
  color: var(--muted);
  font-size: .87rem;
  font-variant-numeric: tabular-nums;
}

.paper-source,
.coauthors {
  color: var(--muted);
}

.paper h3 {
  font-size: clamp(24px, 2.85vw, 38px);
  line-height: 1.17;
  margin: 5px 0 8px;
}

.paper-arrow {
  justify-self: end;
  font-size: 21px;
}

.coauthors {
  font-size: .91rem;
}

.archive-link-row {
  margin-top: 29px;
}

.conversation-section {
  background: var(--paper-deep);
}

.conversation-section h2 {
  margin-bottom: clamp(28px, 4vw, 53px);
}

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

.talk {
  display: flex;
  flex-direction: column;
  padding: clamp(21px, 3.6vw, 52px);
  background: var(--paper);
  border-top: 2px solid var(--blue);
}

.talk:hover h3 {
  color: var(--accent);
}

.talk-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: var(--text);
  margin-bottom: 17px;
}

.play {
  display: inline-grid;
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-size: 16px;
}

.talk-date {
  color: var(--muted);
  margin-bottom: 12px;
}

.talk h3 {
  margin-bottom: 14px;
}

.talk p:not(.talk-date) {
  color: var(--text);
  margin-bottom: 25px;
}

.talk .text-link {
  margin-top: auto;
}

.about-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(30px, 8.3vw, 120px);
}

.about-intro h2 {
  margin-bottom: 22px;
}

.about-intro > p {
  margin-bottom: 17px;
}

.bio-button {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  margin-top: 8px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font-size: .85rem;
}

.bio-button:hover {
  border-color: var(--ink);
}

.about-intro .copy-status {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: .86rem;
}

.copy-status:empty {
  margin: 0;
}

.journey-label {
  margin-bottom: 12px;
  color: var(--muted);
}

.journey-row {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 19px;
  padding-block: 17px;
  border-top: 1px solid var(--line);
}

.journey-row h3 {
  margin-bottom: 6px;
  font-size: 1.45rem;
  line-height: 1.2;
}

.journey-row p {
  color: var(--muted);
  font-size: .93rem;
}

.earlier {
  border-top: 1px solid var(--line);
}

.earlier summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 12px 0;
  list-style: none;
  cursor: pointer;
  font-size: .87rem;
}

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

.earlier[open] summary span {
  transform: rotate(45deg);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: end;
  gap: clamp(24px, 8vw, 125px);
  padding-block: var(--section-space);
}

.contact-grid h2 em {
  color: var(--accent-light);
}

.contact-copy p {
  color: var(--on-blue-muted);
  margin-bottom: 15px;
}

.email-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  max-width: 100%;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--on-blue-line);
  overflow-wrap: anywhere;
}

.email-link:hover,
.socials a:hover {
  color: var(--accent-light);
}

.socials {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin-top: 21px;
  font-size: .86rem;
}

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-block: 20px;
  border-top: 1px solid var(--on-blue-line);
  color: var(--on-blue-muted);
  font-size: .84rem;
}

.research-footer footer {
  border-top: 0;
}

.page-heading {
  padding-block: clamp(44px, 6.5vw, 100px) clamp(28px, 4vw, 57px);
  border-bottom: 1px solid var(--line);
}

.page-heading h1 {
  font-size: clamp(53px, 7.7vw, 110px);
  letter-spacing: -.067em;
  margin-bottom: 20px;
}

.page-heading .eyebrow {
  color: var(--accent);
  margin-bottom: 13px;
}

.page-description {
  color: var(--text);
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.56;
  max-width: 49ch;
}

.page-heading-art {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  align-items: center;
  gap: clamp(25px, 5.9vw, 94px);
}

.page-art {
  aspect-ratio: 2;
}

.thinking-layout {
  display: grid;
  grid-template-columns: minmax(173px, .36fr) minmax(0, 1fr);
  align-items: start;
  gap: clamp(31px, 7vw, 100px);
  padding: clamp(32px, 4vw, 57px) 0 var(--section-space);
}

.thinking-index {
  position: sticky;
  top: calc(var(--header-height) + 28px);
}

.thinking-index .eyebrow {
  color: var(--accent);
  margin-bottom: 12px;
}

.thinking-index ul,
.source-links,
.timeline-list,
.archive-list {
  margin: 0;
}

.thinking-index a {
  display: block;
  padding: 7px 0;
  color: var(--text);
  font-size: .91rem;
  line-height: 1.46;
}

.thinking-index a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.thinking-intro,
.idea-body,
.idea-timeline {
  max-width: 75ch;
}

.thinking-intro {
  padding-bottom: 34px;
}

.thinking-intro p,
.idea-body p {
  color: var(--text);
  font-size: 1.06rem;
  line-height: 1.78;
  margin-bottom: 17px;
}

.idea-entry,
.idea-timeline {
  padding: 34px 0;
  border-top: 1px solid var(--line);
}

.idea-entry .eyebrow {
  color: var(--accent);
  margin-bottom: 9px;
}

.idea-entry h2,
.idea-timeline h2 {
  font-size: clamp(33px, 4.1vw, 57px);
  margin-bottom: 21px;
}

.source-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 20px;
  font-size: .85rem;
}

.timeline-list li {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 15px;
  padding-block: 12px;
  border-bottom: 1px solid var(--line);
}

.timeline-list p {
  color: var(--muted);
  margin-top: 5px;
  font-size: .91rem;
}

.archive-content {
  padding: 24px 0 var(--section-space);
}

.archive-form {
  display: grid;
  grid-template-columns: minmax(205px, 1.85fr) repeat(3, minmax(130px, 1fr));
  gap: 12px 15px;
  align-items: end;
  padding: 20px;
  margin-bottom: 22px;
  background: var(--paper-deep);
}

.archive-form label {
  display: grid;
  gap: 7px;
  min-width: 0;
  font-size: .85rem;
}

.archive-form input,
.archive-form select {
  min-width: 0;
  width: 100%;
  height: 44px;
  padding: 8px 10px;
  border: 1px solid #929ebd;
  border-radius: 0;
  background: #fff;
  color: var(--ink);
}

.archive-form button {
  width: fit-content;
  padding: 5px 0;
  border: 0;
  border-bottom: 1px solid currentColor;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font-size: .85rem;
}

.archive-count,
.archive-empty {
  color: var(--muted);
  font-size: .91rem;
  margin-bottom: 14px;
}

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

.archive-item {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: clamp(16px, 4vw, 53px);
  padding: 23px 0;
  border-bottom: 1px solid var(--line);
}

.archive-item h2 {
  margin: 5px 0 9px;
  font-size: clamp(25px, 2.8vw, 39px);
  letter-spacing: -.045em;
  line-height: 1.14;
}

.archive-item h2 a:hover {
  color: var(--accent);
}

.archive-date,
.archive-meta,
.archive-topics {
  color: var(--muted);
}

.archive-date {
  margin-top: 3px;
  font-variant-numeric: tabular-nums;
}

.archive-summary {
  max-width: 73ch;
  color: var(--text);
  margin-bottom: 7px;
}

.archive-status {
  display: inline-block;
  border: 1px solid var(--line);
  padding: 1px 6px;
  margin-top: 8px;
  color: var(--muted);
  font-size: .77rem;
}

@media (max-width: 1020px) {
  :root {
    --header-height: 65px;
  }

  .header-inner {
    flex-wrap: wrap;
    padding-block: 8px;
  }

  .site-header nav {
    flex-wrap: wrap;
  }

  .js .menu-toggle {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    padding: 9px 0 9px 10px;
    border: 0;
    background: transparent;
    color: var(--ink);
    cursor: pointer;
    font-size: .88rem;
  }

  .menu-toggle span {
    font-size: 18px;
    line-height: 1;
  }

  .menu-toggle[aria-expanded="true"] span {
    transform: rotate(45deg);
  }

  .js .site-header nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 8px var(--gutter) 22px;
  }

  .js .site-header nav.open {
    display: flex;
    align-items: stretch;
    flex-direction: column;
    gap: 3px;
  }

  .site-header nav a {
    padding-block: 8px;
  }

  .archive-form {
    grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .hero,
  .feature-grid,
  .about-section,
  .contact-grid,
  .page-heading-art,
  .thinking-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero {
    padding-top: 22px;
  }

  .hero h1 {
    font-size: clamp(52px, 10.7vw, 81px);
  }

  .hero-copy {
    padding: 13px 0 0;
  }

  .hero-art {
    height: auto;
    aspect-ratio: 1.2;
  }

  .hero-art img {
    object-position: center 45%;
  }

  .section-heading,
  .section-top {
    align-items: start;
    flex-direction: column;
    gap: 15px;
  }

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

  .work-item {
    padding: 22px 0 26px;
  }

  .work-item + .work-item {
    border-left: 0;
    border-top: 1px solid var(--on-blue-line);
  }

  .page-art {
    max-width: 620px;
  }

  .thinking-index {
    position: static;
    border-bottom: 1px solid var(--line);
    padding-bottom: 18px;
  }

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

  .archive-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 5px;
  }
}

@media (max-width: 550px) {
  .wordmark {
    font-size: 21px;
  }

  .hero h1 {
    font-size: clamp(43px, 11.5vw, 64px);
    margin-bottom: 20px;
  }

  .hero-role {
    margin-top: 16px;
  }

  .hero-actions {
    margin-top: 22px;
  }

  .hero-art {
    aspect-ratio: 1;
  }

  .paper {
    grid-template-columns: 47px minmax(0, 1fr) 15px;
    gap: 9px;
    padding-block: 18px;
  }

  .paper-arrow {
    font-size: 16px;
  }

  .talk-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .journey-row {
    grid-template-columns: 75px minmax(0, 1fr);
    gap: 12px;
  }

  .archive-form {
    padding: 14px;
  }

  .archive-form label:first-child {
    grid-column: 1 / -1;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0s !important;
  }
}