:root {
  --paper: #f2eee5;
  --paper-deep: #e7e0d2;
  --ink: #18221e;
  --ink-soft: #4f5b55;
  --oxide: #8d412e;
  --oxide-dark: #672f22;
  --mineral: #53685b;
  --line: #c9bfaf;
  --line-dark: #9f9380;
  --white: #fffdf8;
  --max: 1180px;
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --sans: "Aptos", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(24, 34, 30, .025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24, 34, 30, .025) 1px, transparent 1px),
    var(--paper);
  background-size: 42px 42px;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
}

body::before {
  content: "";
  position: fixed;
  inset: 0 auto 0 0;
  width: 7px;
  background: var(--oxide);
  z-index: 20;
}

a {
  color: var(--oxide-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: .2em;
}

a:hover { color: var(--oxide); }

a:focus-visible {
  outline: 3px solid rgba(141, 65, 46, .45);
  outline-offset: 4px;
}

img { max-width: 100%; }

.skip-link {
  position: fixed;
  top: 12px;
  left: 18px;
  z-index: 100;
  padding: 10px 14px;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-180%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(159, 147, 128, .72);
  background: rgba(242, 238, 229, .94);
  backdrop-filter: blur(12px);
}

.header-inner,
main,
.site-footer {
  width: min(calc(100% - 48px), var(--max));
  margin-inline: auto;
}

.header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}

.identity {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}

.identity img {
  width: 46px;
  height: 46px;
  padding: 5px;
  border: 1px solid var(--line);
  background: var(--white);
}

.identity span { display: grid; }
.identity strong { font-family: var(--serif); font-size: 20px; line-height: 1.1; }
.identity small {
  margin-top: 4px;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 650;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.site-header nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 24px;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: .035em;
}

.site-header nav a {
  color: var(--ink);
  text-decoration: none;
}

.site-header nav a:hover { color: var(--oxide); }

.hero {
  min-height: calc(100vh - 82px);
  padding: clamp(72px, 9vw, 126px) 0 90px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(420px, .95fr);
  align-items: center;
  gap: clamp(52px, 8vw, 110px);
  border-bottom: 1px solid var(--line-dark);
}

.overline,
.section-number,
.software-label {
  margin: 0 0 18px;
  color: var(--oxide);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: .18em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p { margin-top: 0; }

h1,
h2 {
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: -.025em;
}

h1 {
  max-width: 14ch;
  margin-bottom: 28px;
  font-size: clamp(48px, 6.2vw, 82px);
  line-height: .99;
}

.hero-lead {
  max-width: 62ch;
  margin-bottom: 18px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(20px, 2.1vw, 27px);
  line-height: 1.4;
}

.hero-copy > p:last-of-type {
  max-width: 66ch;
  color: var(--ink-soft);
}

.text-links {
  margin-top: 34px;
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}

.text-links a,
.section-action a,
.software-layout a,
.alumni-note a {
  font-size: 14px;
  font-weight: 700;
}

.workflow-figure {
  margin: 0;
}

.workflow-figure img {
  width: 100%;
  display: block;
  filter: drop-shadow(0 22px 30px rgba(24, 34, 30, .13));
}

.workflow-figure figcaption {
  max-width: 54ch;
  margin: 18px auto 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.5;
}

.section {
  padding: 110px 0;
  border-bottom: 1px solid var(--line-dark);
}

.section-intro {
  display: grid;
  grid-template-columns: minmax(280px, .8fr) minmax(320px, 1.2fr);
  column-gap: 72px;
  align-items: end;
  margin-bottom: 54px;
}

.section-intro .section-number { grid-column: 1 / -1; }

.section-intro h2 {
  margin-bottom: 0;
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1.02;
}

.section-intro > p:last-child {
  max-width: 54ch;
  margin-bottom: 7px;
  color: var(--ink-soft);
}

.theme-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--ink);
}

.theme-list li {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 28px;
  padding: 32px 0 34px;
  border-bottom: 1px solid var(--line);
}

.theme-index {
  padding-top: 6px;
  color: var(--oxide);
  font-family: var(--serif);
  font-size: 18px;
}

.theme-list h3 {
  max-width: 32ch;
  margin-bottom: 10px;
  font-family: var(--serif);
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 500;
  line-height: 1.15;
}

.theme-list p {
  max-width: 76ch;
  margin-bottom: 0;
  color: var(--ink-soft);
}

.evidence {
  position: relative;
}

.evidence::before {
  content: "";
  position: absolute;
  inset: 0 calc(50% - 50vw);
  z-index: -1;
  background: var(--ink);
}

.evidence,
.evidence a { color: var(--white); }
.evidence .section-number { color: #d89982; }
.evidence .section-intro > p:last-child,
.evidence .publication-list p { color: #bac4bf; }

.publication-list { border-top: 1px solid #617069; }

.publication-list article {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 28px;
  padding: 25px 0 27px;
  border-bottom: 1px solid #53615b;
}

.publication-list time {
  color: #d89982;
  font-family: var(--serif);
  font-size: 18px;
}

.publication-list h3 {
  max-width: 72ch;
  margin-bottom: 7px;
  font-family: var(--serif);
  font-size: clamp(20px, 2.1vw, 27px);
  font-weight: 500;
  line-height: 1.3;
}

.publication-list h3 a { text-decoration-color: rgba(255, 253, 248, .28); }
.publication-list p { margin-bottom: 0; font-size: 14px; }
.section-action { margin: 34px 0 0; }

.software-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(300px, .7fr);
  gap: 1px;
  border: 1px solid var(--line-dark);
  background: var(--line-dark);
}

.software-feature,
.software-secondary article {
  background: var(--white);
}

.software-feature { padding: clamp(36px, 6vw, 72px); }
.software-feature h3 {
  margin-bottom: 20px;
  font-family: var(--serif);
  font-size: clamp(54px, 7vw, 90px);
  font-weight: 500;
  line-height: 1;
}

.software-feature p:not(.software-label) {
  max-width: 60ch;
  color: var(--ink-soft);
}

.software-secondary {
  display: grid;
  gap: 1px;
  background: var(--line-dark);
}

.software-secondary article { padding: 38px; }
.software-secondary h3 {
  margin-bottom: 10px;
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 500;
}
.software-secondary p { color: var(--ink-soft); }

.people-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 26px;
}

.person {
  min-width: 0;
  display: block;
  color: var(--ink);
  text-decoration: none;
}

.person img {
  width: 100%;
  aspect-ratio: 4 / 4.5;
  display: block;
  object-fit: cover;
  object-position: center top;
  border-bottom: 5px solid var(--mineral);
  background: var(--paper-deep);
  filter: saturate(.82) contrast(1.03);
}

.person-pi img { border-color: var(--oxide); }
.person span { display: grid; padding-top: 15px; }
.person strong { font-family: var(--serif); font-size: 21px; font-weight: 600; }
.person small { margin-top: 5px; color: var(--ink-soft); font-size: 13px; line-height: 1.45; }

.alumni-note {
  margin-top: 62px;
  padding: 30px 0;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
  gap: 50px;
  align-items: center;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.alumni-note p { max-width: 68ch; margin-bottom: 0; }
.alumni-note a { justify-self: end; }

.contact-section {
  padding: 92px 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, .55fr);
  gap: 70px;
}

.contact-section h2 {
  margin-bottom: 18px;
  font-size: clamp(44px, 6vw, 76px);
}

.contact-section p { color: var(--ink-soft); }

.contact-links {
  display: grid;
  align-content: start;
  border-top: 2px solid var(--ink);
}

.contact-links a {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

.site-footer {
  padding: 24px 0 38px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--line-dark);
  color: var(--ink-soft);
  font-size: 12px;
}

.site-footer p { margin: 0; }

/* Alumni page */
.page-hero {
  padding: 86px 0 70px;
  border-bottom: 1px solid var(--line-dark);
}

.page-hero h1 { max-width: none; margin-bottom: 20px; }
.page-hero p { max-width: 72ch; color: var(--ink-soft); }

.alumni-group { padding: 82px 0; border-bottom: 1px solid var(--line-dark); }
.alumni-group h2 { margin-bottom: 36px; font-size: clamp(38px, 5vw, 58px); }

.alumni-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px 24px;
}

.alumnus { min-width: 0; }
.alumnus img {
  width: 100%;
  aspect-ratio: 1 / 1.04;
  object-fit: cover;
  object-position: center top;
  display: block;
  border-bottom: 4px solid var(--mineral);
  background: var(--paper-deep);
  filter: saturate(.8);
}
.alumnus h3 { margin: 12px 0 4px; font-family: var(--serif); font-size: 20px; font-weight: 600; }
.alumnus p { color: var(--ink-soft); font-size: 12px; line-height: 1.45; }

.name-list {
  columns: 3;
  column-gap: 48px;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--ink);
}
.name-list li { break-inside: avoid; padding: 10px 0; border-bottom: 1px solid var(--line); }

.photo-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.photo-grid figure { margin: 0; }
.photo-grid img { width: 100%; display: block; background: var(--white); border: 1px solid var(--line); }
.photo-grid figcaption { margin-top: 8px; color: var(--ink-soft); font-size: 12px; }

/* Principal investigator page */
.pi-hero {
  min-height: calc(100vh - 82px);
  padding: clamp(72px, 9vw, 124px) 0 90px;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, .55fr);
  align-items: center;
  gap: clamp(48px, 8vw, 108px);
  border-bottom: 1px solid var(--line-dark);
}

.pi-hero h1 {
  max-width: none;
  margin-bottom: 22px;
}

.pi-role {
  margin-bottom: 24px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(20px, 2vw, 27px);
  line-height: 1.45;
}

.pi-lead {
  max-width: 70ch;
  color: var(--ink-soft);
  font-size: 18px;
}

.pi-primary-links {
  margin-top: 34px;
  display: flex;
  gap: 20px 28px;
  flex-wrap: wrap;
}

.pi-primary-links a,
.contribution-list a {
  font-size: 14px;
  font-weight: 700;
}

.pi-portrait { margin: 0; }

.pi-portrait img {
  width: 100%;
  aspect-ratio: 1 / 1.1;
  display: block;
  object-fit: cover;
  object-position: center top;
  border-bottom: 7px solid var(--oxide);
  background: var(--paper-deep);
  filter: saturate(.78) contrast(1.04);
}

.pi-portrait figcaption {
  padding-top: 12px;
  color: var(--ink-soft);
  font-size: 12px;
}

.pi-narrative {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 46px;
  font-family: var(--serif);
  font-size: clamp(20px, 2.2vw, 27px);
  line-height: 1.5;
}

.pi-narrative p { margin-bottom: 0; }

.contribution-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--ink);
}

.contribution-list li {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 30px;
  padding: 32px 0 36px;
  border-bottom: 1px solid var(--line);
}

.contribution-list li > span {
  padding-top: 5px;
  color: var(--oxide);
  font-family: var(--serif);
  font-size: 18px;
}

.contribution-list h3 {
  margin-bottom: 10px;
  font-family: var(--serif);
  font-size: clamp(25px, 3vw, 36px);
  font-weight: 500;
  line-height: 1.18;
}

.contribution-list p {
  max-width: 76ch;
  color: var(--ink-soft);
}

.contribution-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.career-timeline {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--ink);
}

.career-timeline li {
  display: grid;
  grid-template-columns: minmax(170px, .36fr) minmax(0, 1fr);
  gap: 36px;
  padding: 22px 0 24px;
  border-bottom: 1px solid var(--line);
}

.career-timeline time {
  color: var(--oxide);
  font-family: var(--serif);
  font-size: 18px;
}

.career-timeline h3 {
  margin-bottom: 3px;
  font-family: var(--serif);
  font-size: 25px;
  font-weight: 600;
}

.career-timeline p { margin-bottom: 0; color: var(--ink-soft); }

.education-block {
  margin-top: 64px;
  display: grid;
  grid-template-columns: minmax(200px, .35fr) minmax(0, 1fr);
  gap: 48px;
}

.education-block > h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 38px;
  font-weight: 500;
}

.education-block dl { margin: 0; border-top: 2px solid var(--ink); }

.education-block dl > div {
  display: grid;
  grid-template-columns: minmax(180px, .42fr) minmax(0, 1fr);
  gap: 24px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}

.education-block dt { font-weight: 700; }
.education-block dd { margin: 0; color: var(--ink-soft); }

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line-dark);
  background: var(--line-dark);
}

.service-grid article {
  min-height: 220px;
  padding: 36px;
  background: var(--white);
}

.service-kind {
  margin-bottom: 24px;
  color: var(--oxide);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.service-grid h3 {
  margin-bottom: 10px;
  font-family: var(--serif);
  font-size: 29px;
  font-weight: 500;
  line-height: 1.2;
}

.service-grid article > p:last-child { margin-bottom: 0; color: var(--ink-soft); }

.service-notes {
  margin-top: 54px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 48px;
}

.service-notes > div {
  padding-top: 22px;
  border-top: 2px solid var(--ink);
}

.service-notes h3 {
  margin-bottom: 10px;
  font-family: var(--serif);
  font-size: 27px;
  font-weight: 500;
}

.service-notes p { color: var(--ink-soft); }

.pi-engagement { padding-bottom: 92px; }

@media (max-width: 980px) {
  .site-header { position: static; }
  .header-inner { padding: 16px 0; align-items: flex-start; }
  .site-header nav { max-width: 480px; gap: 12px 18px; flex-wrap: wrap; }
  .hero { min-height: auto; grid-template-columns: 1fr; }
  .workflow-figure { max-width: 660px; }
  .section-intro { grid-template-columns: 1fr; gap: 20px; }
  .software-layout { grid-template-columns: 1fr; }
  .software-secondary { grid-template-columns: repeat(2, 1fr); }
  .people-grid, .alumni-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .alumni-note { grid-template-columns: 1fr; gap: 16px; }
  .alumni-note a { justify-self: start; }
  .pi-hero { min-height: auto; grid-template-columns: 1fr; }
  .pi-portrait { max-width: 420px; }
  .pi-narrative { grid-template-columns: 1fr; gap: 18px; }
}

@media (max-width: 680px) {
  body { font-size: 16px; }
  body::before { width: 4px; }
  .header-inner,
  main,
  .site-footer { width: min(calc(100% - 32px), var(--max)); }
  .header-inner { display: grid; gap: 16px; }
  .site-header nav { justify-content: flex-start; font-size: 12px; }
  .hero { padding: 62px 0 70px; gap: 48px; }
  h1 { font-size: clamp(44px, 15vw, 66px); }
  .section { padding: 76px 0; }
  .theme-list li,
  .publication-list article { grid-template-columns: 48px minmax(0, 1fr); gap: 14px; }
  .software-secondary { grid-template-columns: 1fr; }
  .people-grid, .alumni-grid { grid-template-columns: 1fr 1fr; gap: 28px 14px; }
  .person strong, .alumnus h3 { font-size: 17px; }
  .person small { font-size: 11px; }
  .contact-section { grid-template-columns: 1fr; gap: 38px; }
  .site-footer { display: grid; }
  .name-list { columns: 1; }
  .photo-grid { grid-template-columns: 1fr; }
  .contribution-list li { grid-template-columns: 42px minmax(0, 1fr); gap: 14px; }
  .career-timeline li { grid-template-columns: 1fr; gap: 5px; }
  .education-block { grid-template-columns: 1fr; gap: 22px; }
  .education-block dl > div { grid-template-columns: 1fr; gap: 2px; }
  .service-grid, .service-notes { grid-template-columns: 1fr; }
  .service-grid article { min-height: auto; }
}

@media (max-width: 420px) {
  .people-grid, .alumni-grid { grid-template-columns: 1fr; }
}

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