:root {
  color-scheme: light;
  --ink: #162936;
  --body: #344753;
  --muted: #536672;
  --accent: #23584e;
  --accent-dark: #17463d;
  --paper: #fbfcfa;
  --band: #f2f5f1;
  --rule: #ccd8d2;
  --white: #fff;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: system-ui, -apple-system, 'Segoe UI', sans-serif;
  --gutter: clamp(1.15rem, 4vw, 3.5rem);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 5rem; }
body { margin: 0; background: var(--paper); color: var(--body); font: 1rem/1.65 var(--sans); }
[hidden] { display: none !important; }
a { color: var(--accent-dark); text-underline-offset: .22em; }
a:hover { text-decoration-thickness: .14em; }
:focus-visible { outline: 3px solid #207767; outline-offset: 4px; }
h1, h2, h3, h4 { color: var(--ink); margin: 0; line-height: 1.22; }
h1, h2 { font-family: var(--serif); font-weight: 500; }
h1 { font-size: clamp(2.65rem, 6.5vw, 5.65rem); letter-spacing: -.055em; }
h2 { font-size: clamp(2rem, 4.1vw, 3.45rem); letter-spacing: -.035em; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.08rem; }
p { margin: 0 0 1rem; }
p:last-child, ul:last-child { margin-bottom: 0; }
ul, ol { padding-inline-start: 1.35rem; }
img { display: block; max-width: 100%; height: auto; }
figure { margin: 0; }
.shell { width: min(100% - 2 * var(--gutter), 77rem); margin-inline: auto; }
.muted { color: var(--muted); }
.eyebrow {
  color: var(--accent-dark);
  font-size: .72rem;
  font-weight: 750;
  letter-spacing: .125em;
  line-height: 1.4;
  text-transform: uppercase;
  margin: 0 0 .8rem;
}
.eyebrow span { padding-inline: .25rem; }
.visually-hidden, .skip-link:not(:focus) {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.skip-link:focus { position: fixed; z-index: 5; inset: .7rem auto auto .7rem; background: var(--white); padding: .7rem 1rem; }

.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 3;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1.3rem; min-height: 4.4rem; }
.brand { font: 700 1.16rem/1.2 var(--serif); color: var(--ink); text-decoration: none; white-space: nowrap; }
.site-header nav { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; column-gap: clamp(.65rem, 1.45vw, 1.3rem); }
.site-header nav a { display: block; padding-block: .6rem; font-size: .78rem; font-weight: 650; color: var(--ink); text-decoration: none; }
.site-header nav a:hover { color: var(--accent); text-decoration: underline; }
.site-header nav a[href="#cv"] { color: var(--accent-dark); }
.menu-toggle {
  border: 1px solid var(--rule);
  border-radius: .25rem;
  color: var(--ink);
  background: var(--white);
  font: 650 .88rem var(--sans);
  padding: .65rem .85rem;
  cursor: pointer;
}

.hero { padding-block: clamp(3rem, 7vw, 6rem); background: #f7f8f5; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(14rem, 20rem); align-items: center; gap: clamp(2rem, 7.5vw, 6.5rem); }
.hero h1 { margin: .35rem 0 .9rem; }
.roles, .tags { list-style: none; padding: 0; display: flex; flex-wrap: wrap; }
.roles { color: var(--accent-dark); font-size: .95rem; font-weight: 650; margin: 0 0 1.6rem; gap: .25rem 0; }
.roles li { padding-inline: .65rem; border-inline-start: 1px solid #9eafa6; }
.roles li:first-child { border: 0; padding-inline-start: 0; }
.hero-intro { font-size: clamp(1rem, 1.55vw, 1.12rem); max-width: 65ch; }
.actions { display: flex; flex-wrap: wrap; gap: .65rem; margin-top: 1.6rem; }
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: .55rem;
  min-height: 2.8rem;
  padding: .65rem 1rem;
  border: 1px solid transparent;
  border-radius: .24rem;
  font-weight: 700;
  font-size: .87rem;
  line-height: 1.35;
  text-align: center;
  text-decoration: none;
}
.primary { background: var(--accent); color: var(--white); }
.primary:hover { background: var(--accent-dark); }
.secondary { background: var(--white); border-color: #abbdb3; color: var(--ink); }
.secondary:hover { background: #eaf0eb; border-color: var(--accent); }
.profile-links { display: flex; flex-wrap: wrap; gap: 1.2rem; margin-top: 1.15rem; font-size: .85rem; font-weight: 650; }
.portrait { background: var(--white); border: 1px solid var(--rule); padding: .55rem; }
.portrait img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: center 34%; background: #e4e8e4; }
.portrait figcaption { display: flex; justify-content: space-between; flex-wrap: wrap; gap: .15rem .55rem; padding: .55rem .15rem .12rem; font-size: .73rem; color: var(--muted); }
.portrait figcaption span:first-child { font-weight: 700; color: var(--ink); }

.credentials { border-block: 1px solid var(--rule); background: #eaf0eb; }
.credential-grid { display: grid; grid-template-columns: repeat(3, 1fr); padding-block: 1.15rem; }
.credential-grid > div { padding-inline: clamp(.9rem, 3vw, 2rem); border-inline-start: 1px solid #c0d1c7; }
.credential-grid > div:first-child { border: 0; padding-inline-start: 0; }
.credential-grid dt { color: var(--accent-dark); font-size: .71rem; letter-spacing: .085em; text-transform: uppercase; font-weight: 750; }
.credential-grid dd { margin: .15rem 0 0; color: var(--ink); font: 500 clamp(.98rem, 2.1vw, 1.3rem)/1.35 var(--serif); }

.section { padding-block: clamp(3.25rem, 6.7vw, 5.75rem); }
.section-heading { margin-bottom: 1.9rem; }
.section-heading > p:not(.eyebrow) { max-width: 65ch; margin: .75rem 0 0; color: var(--muted); }
.section-split { display: grid; grid-template-columns: minmax(11rem, .62fr) minmax(0, 1.38fr); gap: clamp(1.5rem, 6vw, 6rem); }
.prose { max-width: 74ch; }
.section-split .section-heading, .cv-grid .section-heading { margin: 0; }
.band { background: var(--band); border-block: 1px solid var(--rule); }

.featured-project { background: #e5eee8; padding: clamp(1.2rem, 4vw, 2.7rem); border: 1px solid #c1d1c7; border-inline-start: 4px solid var(--accent); }
.featured-project h3 { font: 500 clamp(1.55rem, 3.3vw, 2.4rem)/1.2 var(--serif); max-width: 35ch; }
.feature-lead { max-width: 78ch; margin: .95rem 0 1.55rem; }
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.4rem clamp(1.5rem, 4vw, 3rem); }
.feature-grid h4 { font-size: 1rem; }
.feature-grid ul { margin-block: .55rem 0; }
.feature-grid li + li { margin-top: .48rem; }
.tags { gap: .4rem; margin: 1.45rem 0 0; }
.tags li { padding: .23rem .62rem; border: 1px solid #a9c0b4; border-radius: .25rem; background: var(--paper); color: var(--accent-dark); font-size: .75rem; font-weight: 650; }
.research-photos { margin-top: 1.9rem; padding-top: 1.35rem; border-top: 1px solid #b8cabf; }
.research-photos h4 { margin-bottom: .75rem; }
.photo-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.event-photo { min-width: 0; border: 1px solid var(--rule); background: var(--white); }
.event-photo a { display: block; position: relative; }
.event-photo a:focus-visible { outline-offset: -4px; }
.event-photo img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: var(--band); }
.research-photos .event-photo img { aspect-ratio: 16 / 10; }
.poster-photo img { object-position: center 36%; }
.event-photo figcaption { display: grid; gap: .15rem; padding: .65rem .8rem; color: var(--muted); font-size: .78rem; line-height: 1.45; }
.event-photo figcaption strong { color: var(--ink); font-size: .84rem; }
.photo-open { position: absolute; inset: .5rem .5rem auto auto; display: grid; place-items: center; width: 1.85rem; height: 1.85rem; border-radius: .25rem; background: var(--white); color: var(--accent-dark); font-size: 1rem; }
.event-photo a:hover .photo-open, .event-photo a:focus-visible .photo-open { background: var(--accent-dark); color: var(--white); }
.photo-disclosure { margin-top: .9rem; }
.photo-disclosure .photo-grid { padding: .15rem 0 .85rem; }
.project-list { margin-top: 2.2rem; }
.project-list > p { margin: .55rem 0 1.1rem; max-width: 82ch; }
.disclosure { border-top: 1px solid var(--rule); }
.disclosure:last-child { border-bottom: 1px solid var(--rule); }
.disclosure summary {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: .85rem;
  min-height: 3.1rem;
  padding: .9rem 2.25rem .9rem .6rem;
  list-style: none;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
  cursor: pointer;
}
.disclosure summary::-webkit-details-marker { display: none; }
.disclosure summary::after { content: '+' / ''; position: absolute; right: .6rem; top: .84rem; color: var(--accent-dark); font-size: 1.1rem; }
.disclosure[open] summary::after { content: '−' / ''; }
.disclosure summary:hover { background: #e9efea; }
.ordinal { color: var(--accent-dark); font-size: .74rem; font-weight: 750; min-width: 1.1rem; }
.disclosure-content { padding: 0 .75rem 1rem; max-width: 80ch; }
.project .disclosure-content { padding-inline-start: 2.56rem; }
.disclosure-content p { margin-bottom: .5rem; }
.disclosure-content ul { margin-block: 0; }
.disclosure-content li + li { margin-top: .5rem; }

.expertise-grid, .education-grid, .awards-grid, .rank-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.15rem;
}
.method-card, .education-card, .awards-grid article { padding: clamp(1.05rem, 2.65vw, 1.85rem); background: var(--white); border: 1px solid var(--rule); border-top: 3px solid #75a18e; }
.method-card h3, .education-card h4, .awards-grid h3 { margin-bottom: .55rem; }
.method-card p:not(.eyebrow), .education-card p:not(.eyebrow) { font-size: .95rem; }
.method-card p + p:not(.eyebrow) { margin-top: .6rem; }
.education-card h4 { font-size: 1.23rem; }
.rank { color: var(--accent-dark); font-weight: 700; }
.rank-grid { margin-top: 1.1rem; }
.rank-grid p { display: flex; flex-wrap: wrap; align-items: baseline; gap: .35rem .75rem; margin: 0; border-bottom: 1px solid var(--rule); padding: .65rem .1rem; }
.rank-grid strong { font: 500 1.8rem/1 var(--serif); color: var(--accent-dark); }
.rank-grid span { color: var(--muted); font-size: .85rem; }

.publication-list, .timeline, .presentation-list { list-style: none; padding: 0; margin: 0; }
.publication-list > li, .timeline > li { display: grid; grid-template-columns: 4.9rem minmax(0, 1fr); gap: clamp(.75rem, 2.4vw, 1.7rem); padding-block: 1.15rem; border-top: 1px solid var(--rule); }
.publication-list > li:last-child, .timeline > li:last-child, .presentation-list > li:last-child { border-bottom: 1px solid var(--rule); }
.publication-list time { font: 500 1.45rem/1.2 var(--serif); color: var(--accent-dark); }
.publication-list h3 { font-size: 1.09rem; }
.publication-list h3 a { color: var(--ink); text-decoration-color: #829e91; }
.publication-list p, .manuscript p:not(.eyebrow), .timeline p:not(.date), .presentation-list p:not(.eyebrow) { font-size: .94rem; margin: .35rem 0 0; }
.publication-link { display: inline-block; margin-inline-start: .35rem; overflow-wrap: anywhere; font-size: .83rem; }
.subsection { margin-top: 2.35rem; }
.manuscript { margin-top: .8rem; border: 1px solid var(--rule); padding: 1.2rem; background: var(--white); }
.subheading { margin-bottom: .9rem; }
.spaced { margin-top: 2.1rem; }
.timeline > li { grid-template-columns: 10rem minmax(0, 1fr); }
.timeline .date { color: var(--accent-dark); font-weight: 700; font-size: .83rem; margin: 0; }
.institution { color: var(--ink); font-weight: 650; }
.presentation-list > li { border-top: 1px solid var(--rule); padding-block: 1.2rem; }
.presentation-list h3 { font-size: 1.1rem; }
.presentation-with-photo { display: grid; grid-template-columns: minmax(0, 1fr) minmax(12rem, 19rem); gap: clamp(1rem, 4vw, 3rem); align-items: start; }

.cv-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; gap: clamp(1.5rem, 5vw, 4rem); }
.cv-preview { border: 1px solid var(--rule); background: var(--white); padding: .55rem; }
.cv-preview a { display: block; }
.cv-preview img { width: 100%; }
.cv-preview figcaption { color: var(--muted); font-size: .78rem; padding: .45rem .35rem .08rem; border-top: 1px solid var(--rule); }
.contact { background: #162f38; color: #ecf3ef; padding-block: clamp(2.65rem, 5vw, 4.6rem); }
.contact h2, .contact .eyebrow, .contact a:not(.button) { color: #f3faf6; }
.contact :focus-visible { outline-color: #b7ead6; }
.contact-list { margin-block: 1rem; }
.contact-list > div { display: grid; grid-template-columns: 5.2rem minmax(0, 1fr); gap: .5rem; margin-block: .35rem; }
.contact-list dt { font-weight: 700; }
.contact-list dd { margin: 0; overflow-wrap: anywhere; }
.contact-button { background: #dcece2; color: #142e29; }
.contact-button:hover { background: var(--white); }
.site-footer { background: var(--paper); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: .6rem 1rem; padding-block: 1.15rem; font-size: .82rem; color: var(--muted); }

@media (max-width: 70rem) {
  .header-inner { flex-wrap: wrap; gap: 0 1rem; padding-block: .6rem; min-height: 3.85rem; }
  .site-header nav { flex-basis: 100%; justify-content: flex-start; margin-block-start: .65rem; padding-block: .35rem; border-top: 1px solid var(--rule); max-height: 66vh; overflow: auto; }
  .site-header nav a { padding: .48rem .4rem; }
}

@media (max-width: 50rem) {
  .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(10rem, 13rem); gap: 1.35rem; }
  .section-split { grid-template-columns: 1fr; gap: 1rem; }
  .feature-grid { gap: 1rem; }
}

@media (max-width: 38rem) {
  .site-header nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .05rem .6rem; }
  .hero-grid, .feature-grid, .photo-grid, .presentation-with-photo, .expertise-grid, .education-grid, .awards-grid, .cv-grid { grid-template-columns: 1fr; }
  .hero-grid { gap: 1.65rem; }
  .hero .portrait { width: min(100%, 15rem); }
  .roles { gap: .3rem .6rem; }
  .roles li { border: 0; padding: 0; }
  .roles li + li::before { content: '· ' / ''; padding-inline-end: .2rem; }
  .credential-grid { gap: .75rem; grid-template-columns: 1fr; }
  .credential-grid > div { padding-inline: 0; border-inline-start: 0; }
  .credential-grid > div + div { padding-block-start: .55rem; border-top: 1px solid #c0d1c7; }
  .timeline > li { grid-template-columns: 1fr; gap: .3rem; }
  .publication-list > li { grid-template-columns: 3rem minmax(0, 1fr); }
  .publication-list time { font-size: 1.13rem; }
  .cv-grid { gap: 1.5rem; }
}

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