:root {
  --bg: #fafafa;
  --fg: #1c1c1c;
  --muted: #5a5a5a;
  --rule: #d8d8d8;
  --link: #8c1d40;
  --link-hover: #5c0f29;
  --max: 46rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161616;
    --fg: #ececec;
    --muted: #a8a8a8;
    --rule: #3a3a3a;
    --link: #ffc627;
    --link-hover: #ffe08a;
  }
}

* { box-sizing: border-box; }

html { font-size: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "EB Garamond", Georgia, "Times New Roman", serif;
  font-size: 1.15rem;
  line-height: 1.6;
}

a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}
a:hover { color: var(--link-hover); }
a:focus-visible, summary:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--fg);
  color: var(--bg);
  padding: 0.5rem 1rem;
}
.skip:focus { left: 0; z-index: 10; }

header.site, main, footer.site {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

header.site {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 2rem;
  padding-top: 1.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--rule);
}

.site-title {
  font-size: 1.5rem;
  letter-spacing: 0.02em;
  color: var(--fg);
  text-decoration: none;
}

nav ul {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
nav a {
  color: var(--fg);
  text-decoration: none;
  padding-bottom: 0.15rem;
  border-bottom: 1px solid transparent;
}
nav a:hover { border-bottom-color: var(--fg); color: var(--fg); }
nav a[aria-current="page"] { border-bottom-color: var(--fg); }

main { padding-top: 2rem; padding-bottom: 3rem; }

h1 {
  font-size: 2rem;
  font-weight: 500;
  margin: 0 0 1.25rem;
}
h2 {
  font-size: 1.4rem;
  font-weight: 500;
  margin: 2.75rem 0 0.25rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--fg);
}
h3 {
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 1.35;
  margin: 0;
}

/* Home */
.intro {
  display: grid;
  grid-template-columns: minmax(0, 14rem) 1fr;
  gap: 2rem;
  align-items: start;
}
.intro img {
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  display: block;
}
.intro p { margin: 0 0 1rem; }

@media (max-width: 36rem) {
  .intro { grid-template-columns: 1fr; }
  .intro img { max-width: 14rem; }
}

/* Research */
.paper {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--rule);
}
.paper .coauthors,
.paper .note {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 1rem;
}
.paper .links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin: 0.5rem 0 0;
  padding: 0;
  list-style: none;
  font-size: 1rem;
}
.paper details { margin-top: 0.5rem; }
.paper summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 1rem;
  width: fit-content;
}
.paper summary:hover { color: var(--fg); }
.paper details p {
  margin: 0.5rem 0 0.25rem;
  font-size: 1.05rem;
}

footer.site {
  padding-top: 1rem;
  padding-bottom: 2rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.95rem;
}

@media print {
  nav, .skip { display: none; }
  details { display: block; }
  details > summary { display: none; }
}