:root {
  --teal: #1b5c5d;
  --teal-dark: #12494a;
  --teal-light: #e9f1f0;
  --ink: #202625;
  --muted: #606968;
  --line: #dce3e1;
  --paper: #ffffff;
  --max-width: 1160px;
  --content-width: 1040px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 17px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration-color: currentColor;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-thickness: 2px;
}

a:focus-visible {
  outline: 3px solid #f0b44d;
  outline-offset: 4px;
  border-radius: 2px;
}

.container {
  width: min(calc(100% - 48px), var(--max-width));
  margin-inline: auto;
}

.content-width {
  max-width: var(--content-width);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 9px 14px;
  color: #fff;
  background: var(--teal-dark);
  transform: translateY(-160%);
  transition: transform 150ms ease;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  background: #fff;
}

.header-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  min-height: 218px;
  padding-block: 58px 54px;
}

.site-name {
  color: var(--teal-dark);
  font-size: clamp(2rem, 4.1vw, 2.75rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 9px 28px;
  padding-bottom: 2px;
  color: var(--teal-dark);
  font-size: 0.94rem;
}

.site-nav a {
  text-decoration: none;
}

.site-nav a:hover {
  text-decoration: underline;
  text-underline-offset: 0.3em;
}

.intro {
  color: #fff;
  background: var(--teal);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(260px, 365px) minmax(0, 1fr);
  align-items: center;
  gap: clamp(48px, 9vw, 116px);
  padding-block: 34px;
}

.portrait-wrap {
  background: rgba(255, 255, 255, 0.08);
}

.portrait {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center 28%;
}

.intro-copy {
  max-width: 660px;
  font-size: clamp(1rem, 1.3vw, 1.12rem);
  line-height: 1.75;
}

.intro-copy p {
  margin: 0 0 1.1rem;
}

.intro-copy a {
  color: #fff;
}

.intro-links {
  padding-top: clamp(20px, 4vw, 54px);
}

.email-line {
  margin-bottom: 0 !important;
}

.section {
  scroll-margin-top: 20px;
  padding-block: 72px 90px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h2 {
  margin: 0;
  color: var(--teal-dark);
  font-size: clamp(1.65rem, 3vw, 2rem);
  font-weight: 400;
  line-height: 1.25;
}

.paper {
  padding-block: 32px 38px;
  border-bottom: 1px solid var(--line);
}

.paper h3 {
  max-width: 900px;
  margin: 0;
  color: var(--teal-dark);
  font-size: clamp(1.13rem, 2vw, 1.35rem);
  font-weight: 500;
  line-height: 1.45;
}

.coauthors {
  margin: 8px 0 18px;
  color: var(--muted);
  font-size: 0.94rem;
  font-style: italic;
}

.abstract,
.paper > p:not(.coauthors) {
  margin: 18px 0 0;
  text-align: left;
}

.abstract span {
  font-weight: 700;
}

.paper-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin-top: 22px;
}

.paper-links a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 5px 13px;
  color: var(--teal-dark);
  background: var(--teal-light);
  border: 1px solid transparent;
  border-radius: 3px;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
}

.paper-links a:hover {
  background: #fff;
  border-color: var(--teal);
}

.subsection-heading {
  padding-top: 64px;
}

.compact-paper {
  padding-bottom: 24px;
}

.site-footer {
  color: #e9f1f0;
  background: var(--teal-dark);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 130px;
  padding-block: 30px;
  font-size: 0.88rem;
}

.footer-inner p {
  margin: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

@media (max-width: 820px) {
  .header-inner {
    min-height: 160px;
    padding-block: 42px 36px;
  }

  .intro-grid {
    grid-template-columns: minmax(220px, 300px) minmax(0, 1fr);
    gap: 42px;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(calc(100% - 32px), var(--max-width));
  }

  .header-inner {
    display: block;
    min-height: auto;
    padding-block: 36px 30px;
  }

  .site-nav {
    margin-top: 24px;
  }

  .intro-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-block: 24px 42px;
  }

  .portrait-wrap {
    width: min(100%, 330px);
    margin-inline: auto;
  }

  .intro-copy {
    font-size: 1rem;
  }

  .intro-links {
    padding-top: 15px;
  }

  .section {
    padding-block: 54px 68px;
  }

  .paper {
    padding-block: 28px 32px;
  }

  .subsection-heading {
    padding-top: 48px;
  }

  .footer-inner {
    display: block;
  }

  .footer-links {
    margin-top: 10px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* Paper detail pages: these rules do not alter the homepage. */
.paper-page {
  min-height: 55vh;
}

.paper-detail {
  padding-block: 12px 24px;
}

.paper-detail h1 {
  max-width: 920px;
  margin: 0;
  color: var(--teal-dark);
  font-size: clamp(1.65rem, 3vw, 2.25rem);
  font-weight: 400;
  line-height: 1.3;
}

.paper-detail .coauthors {
  margin-top: 12px;
}

.paper-detail .abstract {
  margin-top: 28px;
}

@media (max-width: 680px) {
  .paper-detail {
    padding-block: 8px 12px;
  }
}