:root {
  --paper: #f4f0e7;
  --ink: #171715;
  --cobalt: #3559a6;
  --muted: #68645c;
  --rule: #cfc7b8;
  --wash: #dce3ee;
  --sans: Calibri, Carlito, "Segoe UI", Arial, Helvetica, sans-serif;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 22% 12%, rgba(255, 255, 255, 0.72), transparent 30rem),
    repeating-linear-gradient(0deg, rgba(23, 23, 21, 0.014) 0, rgba(23, 23, 21, 0.014) 1px, transparent 1px, transparent 4px),
    var(--paper);
  color: var(--ink);
  font-family: var(--sans);
}

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

a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--cobalt);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  border: 1px solid var(--cobalt);
  background: var(--paper);
  color: var(--cobalt);
  transform: translateY(-160%);
}

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

.site-shell {
  width: min(100% - 72px, 1420px);
  margin: 0 auto;
}

.site-header {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--rule);
}

.monogram {
  font-family: var(--sans);
  font-size: 2.15rem;
  letter-spacing: 0.04em;
}

nav {
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  align-items: center;
}

.nav-links > a {
  position: relative;
  padding: 12px 0;
  font-size: 0.98rem;
}

.nav-links > a::after {
  content: "·";
  margin: 0 18px;
  color: var(--muted);
}

.nav-links > a::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 8px;
  width: 0;
  height: 1px;
  background: var(--cobalt);
  transition: width 180ms ease;
}

.nav-links > a:hover::before,
.nav-links > a:focus-visible::before {
  width: calc(100% - 36px);
}

.contact-menu {
  position: relative;
}

.contact-menu summary {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 0;
  font-size: 0.98rem;
  cursor: pointer;
  list-style: none;
}

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

.contact-menu summary::before {
  content: "";
  position: absolute;
  right: 0;
  bottom: 8px;
  left: 0;
  height: 1px;
  background: var(--cobalt);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.contact-menu summary:hover::before,
.contact-menu summary:focus-visible::before,
.contact-menu[open] summary::before {
  transform: scaleX(1);
}

.contact-caret {
  width: 7px;
  height: 7px;
  margin-top: -4px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform 180ms ease;
}

.contact-menu[open] .contact-caret {
  margin-top: 3px;
  transform: rotate(225deg);
}

.contact-panel {
  position: absolute;
  z-index: 30;
  top: calc(100% + 8px);
  right: 0;
  width: 220px;
  padding: 8px;
  border: 1px solid var(--rule);
  background: var(--paper);
  box-shadow: 0 18px 42px rgba(23, 23, 21, 0.16);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 10px 12px;
  color: var(--cobalt);
  transition:
    background-color 180ms ease,
    color 180ms ease;
}

.contact-item svg {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.contact-item:hover,
.contact-item:focus-visible {
  background: var(--wash);
  color: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(420px, 0.92fr);
  align-items: center;
  min-height: 660px;
  border-bottom: 1px solid var(--rule);
}

.hero-copy {
  padding: 84px 48px 84px 0;
}

.eyebrow {
  margin: 0 0 28px;
  color: var(--cobalt);
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2 {
  font-family: var(--sans);
  font-weight: 400;
}

h1 {
  margin: 0;
  font-size: clamp(5.5rem, 8.2vw, 8.4rem);
  line-height: 0.88;
  letter-spacing: -0.06em;
}

.statement {
  max-width: 780px;
  margin: 34px 0;
  font-family: var(--sans);
  font-size: clamp(2rem, 3.15vw, 3.2rem);
  line-height: 1.22;
  letter-spacing: -0.025em;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--cobalt);
  color: var(--cobalt);
  font-size: 1.08rem;
}

.text-link span {
  transition: transform 180ms ease;
}

.text-link:hover span,
.text-link:focus-visible span {
  transform: translateX(6px);
}

.portrait-frame {
  position: relative;
  width: min(82%, 470px);
  margin: 0;
  justify-self: end;
  padding: 14px;
  border: 1px solid var(--cobalt);
  background: rgba(255, 255, 255, 0.3);
}

.portrait-frame::after {
  position: absolute;
  z-index: -1;
  right: -22px;
  bottom: -22px;
  width: 58%;
  height: 44%;
  background: var(--wash);
  content: "";
}

.portrait-frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 656 / 723;
  object-fit: cover;
  object-position: 44% center;
  filter: saturate(0.88) contrast(1.03);
}

.about {
  display: grid;
  grid-template-columns: minmax(180px, 0.32fr) minmax(0, 1fr);
  gap: 64px;
  padding: 94px 0 104px;
  border-bottom: 1px solid var(--rule);
}

.about .eyebrow {
  margin-top: 10px;
}

.about-copy {
  max-width: 960px;
  font-family: var(--sans);
  font-size: clamp(1.65rem, 2.55vw, 2.55rem);
  line-height: 1.38;
  letter-spacing: -0.025em;
}

.about-copy p {
  margin: 0;
}

.about-copy a,
.email {
  color: var(--cobalt);
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.research-articles {
  padding: 82px 0 112px;
}

.section-heading {
  display: flex;
  align-items: baseline;
  gap: 32px;
  margin-bottom: 36px;
}

h2 {
  margin: 0;
  font-size: clamp(2.6rem, 4vw, 4rem);
  line-height: 1;
  letter-spacing: -0.035em;
}

.work-list {
  border-top: 1px solid var(--rule);
}

.work-row {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  align-items: start;
  min-height: 148px;
  padding-block: 24px;
  border-bottom: 1px solid var(--rule);
  transition: background-color 180ms ease, padding 180ms ease;
}

.work-row:hover,
.work-row:focus-within {
  padding-inline: 18px;
  background: color-mix(in srgb, var(--wash) 62%, transparent);
}

.work-year,
.work-main small {
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}

.work-year {
  padding-top: 7px;
}

.work-main {
  display: grid;
  gap: 9px;
}

.work-title {
  max-width: 980px;
  font-family: var(--sans);
  font-size: clamp(1.35rem, 2.1vw, 2rem);
  font-weight: 400;
  line-height: 1.2;
}

.work-title:hover,
.work-title:focus-visible {
  color: var(--cobalt);
}

.work-authors {
  max-width: 1050px;
  color: #4f4c45;
  font-size: 0.94rem;
  line-height: 1.5;
}

.work-main small {
  text-transform: uppercase;
}

.work-details {
  max-width: 980px;
  margin-top: 5px;
}

.work-details summary {
  width: fit-content;
  cursor: pointer;
  color: var(--cobalt);
  font-size: 0.9rem;
  list-style: none;
  outline-offset: 5px;
}

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

.work-details summary::before {
  display: inline-block;
  width: 1.15rem;
  content: "+";
  font-family: var(--sans);
  font-size: 1.12rem;
  transition: transform 180ms ease;
}

.work-details[open] summary::before {
  transform: rotate(45deg);
}

.abstract-panel {
  max-width: 900px;
  padding: 18px 0 6px 1.15rem;
}

.abstract-panel p {
  margin: 0;
  color: #4f4c45;
  font-family: var(--sans);
  font-size: 1.02rem;
  line-height: 1.62;
}

.resource-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  margin-top: 18px;
}

.resource-links a {
  padding-bottom: 3px;
  border-bottom: 1px solid var(--cobalt);
  color: var(--cobalt);
  font-size: 0.88rem;
}

.resource-links a:hover,
.resource-links a:focus-visible {
  border-bottom-color: transparent;
}

.paper-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 1px;
  padding: 10px 0 5px 14px;
  border-bottom: 1px solid transparent;
  color: var(--cobalt);
  font-size: 0.9rem;
  transition: transform 180ms ease;
}

.paper-link:hover,
.paper-link:focus-visible {
  border-bottom-color: var(--cobalt);
  transform: translate(4px, -4px);
}

footer {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 54px 0 48px;
  border-top: 1px solid var(--rule);
  text-align: center;
}

.footer-mark {
  margin: 0;
  color: var(--ink);
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  font-weight: 500;
  letter-spacing: 0.015em;
  line-height: 1.35;
}

@media (max-width: 900px) {
  .site-shell {
    width: min(100% - 40px, 760px);
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-copy {
    padding: 72px 0 24px;
  }

  .portrait-frame {
    width: min(76%, 420px);
    justify-self: center;
    margin: 20px 0 70px;
  }

  .about {
    grid-template-columns: 1fr;
    gap: 12px;
  }

}

@media (max-width: 620px) {
  .site-shell {
    width: min(100% - 28px, 540px);
  }

  .site-header {
    min-height: 76px;
  }

  .monogram {
    font-size: 1.75rem;
  }

  .nav-links > a,
  .contact-menu summary {
    font-size: 0.8rem;
  }

  .nav-links > a::after {
    margin: 0 6px;
  }

  .nav-links > a:hover::before,
  .nav-links > a:focus-visible::before {
    width: calc(100% - 12px);
  }

  .contact-panel {
    width: 210px;
  }

  h1 {
    font-size: clamp(4rem, 22vw, 6rem);
  }

  .statement {
    margin-top: 40px;
    font-size: 1.8rem;
  }

  .portrait-frame {
    width: calc(100% - 32px);
    margin-bottom: 58px;
  }

  .research-articles {
    padding: 64px 0 80px;
  }

  .work-row {
    grid-template-columns: 58px 1fr auto;
    min-height: 158px;
    column-gap: 8px;
  }

  .work-title {
    font-size: 1.25rem;
  }

  .paper-link {
    width: 34px;
    overflow: hidden;
    padding-left: 0;
    gap: 20px;
    font-size: 0;
    white-space: nowrap;
  }

  .paper-link span {
    font-size: 1.1rem;
  }

  .work-authors {
    font-size: 0.86rem;
  }

  .abstract-panel {
    padding-left: 0;
  }

  .abstract-panel p {
    font-size: 0.96rem;
  }

}

@media (max-width: 480px) {
  .site-header {
    min-height: auto;
    flex-wrap: wrap;
    gap: 10px;
    padding: 14px 0;
  }

  nav {
    width: 100%;
    justify-content: space-between;
  }
}

@media (max-width: 340px) {
  .nav-links {
    width: 100%;
    justify-content: center;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}