:root {
  --ink: #1b2524;
  --muted: #65706d;
  --paper: #f7f5ef;
  --surface: #fffdf8;
  --line: #d9ddd6;
  --accent: #ed653e;
  --accent-dark: #b94224;
  --teal: #0c6862;
  --teal-light: #cce6df;
  --max-width: 1180px;
  --sans: "DM Sans", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  line-height: 1.65;
}

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.sr-only {
  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 {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  min-height: 72px;
  padding: 0 clamp(24px, 5vw, 72px);
  border-bottom: 1px solid rgba(27, 37, 36, 0.1);
  background: rgba(247, 245, 239, 0.88);
  backdrop-filter: blur(16px);
}

.site-nav {
  display: flex;
  gap: 30px;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--accent-dark);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 11px 8px;
  border: 0;
  background: transparent;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 25px;
  height: 2px;
  margin: 5px 0;
  background: var(--ink);
  transition: transform 180ms ease;
}

.hero {
  position: relative;
  display: grid;
  place-items: center;
  min-height: min(780px, calc(100vh - 72px));
  padding: 110px 24px 100px;
  overflow: hidden;
  isolation: isolate;
}

.hero::before {
  position: absolute;
  inset: 28px;
  z-index: -2;
  border: 1px solid rgba(12, 104, 98, 0.18);
  border-radius: 32px;
  content: "";
}

.hero-content {
  width: min(1340px, 100%);
  text-align: center;
}

.hero h1 {
  max-width: 1300px;
  margin: 18px auto 30px;
  font-size: clamp(2.5rem, 4.2vw, 4.4rem);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -0.035em;
}

.eyebrow,
.kicker {
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow strong {
  color: var(--ink);
  font-weight: 700;
}

.eyebrow span {
  color: var(--accent-dark);
}

.authors {
  max-width: 920px;
  margin: 0 auto 5px;
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 500;
}

.affiliations {
  margin: 0;
  color: var(--muted);
}

.corresponding-note {
  margin: 6px 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 36px;
}

.button {
  min-width: 112px;
  padding: 12px 21px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: 0.93rem;
  font-weight: 700;
  text-decoration: none;
  transition:
    transform 180ms ease,
    background 180ms ease,
    color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--surface);
  background: var(--ink);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  color: var(--surface);
  background: var(--teal);
  border-color: var(--teal);
}

.hero-glow {
  position: absolute;
  z-index: -3;
  border-radius: 50%;
  filter: blur(4px);
  opacity: 0.7;
}

.hero-glow-one {
  top: 6%;
  right: -9%;
  width: 38vw;
  height: 38vw;
  background: radial-gradient(circle, var(--teal-light), transparent 68%);
}

.hero-glow-two {
  bottom: -18%;
  left: -7%;
  width: 42vw;
  height: 42vw;
  background: radial-gradient(circle, #f5c9b8, transparent 68%);
}

.section {
  width: min(var(--max-width), calc(100% - 48px));
  margin: 0 auto;
  padding: 82px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 45px;
}

.section-heading h2,
.plain-section-title {
  margin: 6px 0 12px;
  font-size: clamp(2.1rem, 4vw, 3.7rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.section-heading > p:last-child,
.video-section > div > p:last-child {
  color: var(--muted);
}

.section-feature {
  padding-top: 56px;
}

.centered-section {
  text-align: center;
}

.plain-section-title {
  margin-bottom: 30px;
  text-align: center;
}

.media-placeholder {
  display: grid;
  place-items: center;
  min-height: 300px;
  padding: 32px;
  overflow: hidden;
  color: #d8eee9;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.11), transparent 50%),
    var(--teal);
  border-radius: 24px;
  text-align: center;
}

.media-placeholder span {
  display: block;
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.025em;
}

.media-placeholder small {
  display: block;
  margin-top: 8px;
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.media-placeholder-wide {
  aspect-ratio: 16 / 7;
}

.media-placeholder-method {
  aspect-ratio: 2 / 1;
  color: #6c3324;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.24), transparent 50%),
    #edb49e;
}

.caption {
  max-width: 1080px;
  margin: 18px auto 0;
  color: var(--muted);
  font-size: 0.92rem;
  text-align: justify;
  text-justify: inter-word;
  line-height: 1.65;
}

.figure-card {
  margin: 0;
  padding: clamp(14px, 2vw, 24px);
  background: #ffffff;
  border: 1px solid rgba(27, 37, 36, 0.1);
  border-radius: 24px;
  box-shadow: 0 16px 44px rgba(27, 37, 36, 0.07);
}

.figure-card .media-placeholder {
  border-radius: 14px;
}

.figure-card .caption {
  margin: 20px 4px 2px;
}

.media-placeholder.has-image {
  display: block;
  min-height: 0;
  padding: 0;
  background: transparent;
}

.media-placeholder.has-image img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.media-placeholder-wide.has-image,
.media-placeholder-method.has-image {
  aspect-ratio: auto;
}

.prose {
  font-size: 1.05rem;
}

.prose-centered {
  max-width: 920px;
  margin: 0 auto;
  text-align: justify;
  text-justify: inter-word;
}

.section-results {
  width: 100%;
  max-width: none;
  padding-right: max(24px, calc((100% - var(--max-width)) / 2));
  padding-left: max(24px, calc((100% - var(--max-width)) / 2));
  background: #1b2524;
  color: var(--surface);
}

.section-results .kicker {
  color: #ffa487;
}

.section-results .plain-section-title {
  color: var(--surface);
}

.section-results .section-heading > p:last-child,
.section-results figcaption {
  color: #46524f;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: stretch;
  gap: 36px 26px;
}

.result-card {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 18px;
  color: var(--ink);
  background: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.2);
}

.result-card .media-placeholder {
  min-height: 0;
  aspect-ratio: 4 / 3;
  color: #1b2524;
  background: #d8ddd7;
  border-radius: 16px;
}

.result-card .media-placeholder.has-image img {
  height: auto;
}

.result-card .media-placeholder.has-image {
  aspect-ratio: auto;
  background: #ffffff;
}

.result-card:nth-child(-n + 2) .media-placeholder.has-image {
  aspect-ratio: 16 / 9;
}

.result-card:nth-child(-n + 2) .media-placeholder.has-image img {
  height: 100%;
  object-position: center;
}

.result-card figcaption {
  flex: 1;
  padding: 16px 3px 2px;
  font-size: 0.88rem;
  line-height: 1.6;
  text-align: justify;
  text-justify: inter-word;
}

.result-card:nth-child(-n + 2) figcaption {
  padding-top: 12px;
}

.math-symbol {
  display: inline-block;
  white-space: nowrap;
  line-height: 1;
}

.math-symbol sub {
  position: relative;
  bottom: -0.18em;
  font-size: 0.7em;
  line-height: 0;
  vertical-align: baseline;
}

.institution-note {
  color: var(--muted);
}

.media-placeholder-video {
  width: min(960px, 100%);
  margin: 0 auto;
  min-height: 0;
  aspect-ratio: 16 / 9;
}

.citation-card {
  position: relative;
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
}

.citation-card pre {
  margin: 0;
  overflow-x: auto;
  color: #34413e;
  font-size: 0.88rem;
  line-height: 1.65;
}

.copy-button {
  position: absolute;
  top: 18px;
  right: 18px;
  padding: 8px 13px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  font-family: var(--sans);
  font-weight: 700;
}

.contact-section {
  display: block;
}

.contact-links {
  display: grid;
  align-content: center;
  gap: 12px;
  max-width: 760px;
  margin: 36px auto 0;
  text-align: left;
}

.contact-links a {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  font-weight: 700;
  text-decoration: none;
}

.contact-links span {
  color: var(--muted);
  font-weight: 400;
}

footer {
  display: flex;
  justify-content: space-between;
  padding: 28px max(24px, calc((100% - var(--max-width)) / 2));
  color: #d5ddda;
  background: var(--ink);
  font-size: 0.88rem;
}

footer p {
  margin: 0;
}

footer a {
  text-decoration: none;
}

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

.project-media {
  width: 100%;
  height: auto;
  border-radius: 24px;
}

.video-frame {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: 24px;
}

@media (max-width: 800px) {
  .site-header {
    min-height: 64px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-toggle[aria-expanded="true"] span:nth-of-type(2) {
    transform: translateY(3.5px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:nth-of-type(3) {
    transform: translateY(-3.5px) rotate(-45deg);
  }

  .site-nav {
    position: absolute;
    top: 64px;
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 12px 24px 22px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 11px 0;
  }

  .hero {
    min-height: 680px;
    padding-top: 80px;
  }

  .hero::before {
    inset: 16px;
  }

  .section {
    width: min(var(--max-width), calc(100% - 32px));
    padding: 62px 0;
  }

  .result-grid {
    grid-template-columns: 1fr;
  }

  .contact-links a {
    flex-direction: column;
    gap: 2px;
  }
}

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

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