:root {
  --paper: #faf7f2;
  --ink: #202020;
  --muted: #686868;
  --line: #d8d8d4;
  --accent: #537391;
  --page-gutter: clamp(1.5rem, 8vw, 7rem);
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-size: 112.5%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Charter, Georgia, "Liberation Serif", serif;
  line-height: 1.62;
}

main {
  width: min(55rem, calc(100% - var(--page-gutter) - 2rem));
  margin-left: var(--page-gutter);
  margin-right: auto;
  padding: 3.5rem 0 4rem;
}

a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 0.12em;
}

a:hover {
  color: var(--accent);
  text-decoration-thickness: 2px;
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 0.2rem;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  column-gap: var(--space-4);
  row-gap: var(--space-2);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--line);
}

.identity {
  flex: 1 1 27rem;
  min-width: min(100%, 27rem);
}

h1 {
  margin: 0;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.25;
}

.affiliation {
  margin: var(--space-1) 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

nav {
  display: flex;
  flex: 0 0 auto;
  gap: var(--space-3);
  font-size: 0.95rem;
  white-space: nowrap;
}

nav a {
  margin-block: calc(-1 * var(--space-1));
  padding-block: var(--space-1);
  color: var(--muted);
  text-decoration: none;
  transition: color 150ms ease;
}

nav a:hover {
  text-decoration: underline;
  text-decoration-thickness: 1px;
}

nav a[aria-current="page"] {
  color: var(--ink);
}

.introduction {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 15rem;
  align-items: start;
  gap: clamp(2rem, 4vw, 3rem);
  padding-top: 2.5rem;
}

.bio p,
section p {
  margin: 0 0 var(--space-2);
}

.portrait {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  margin: 0;
  background: #ecece8;
  border: 1px solid var(--line);
  object-fit: cover;
  object-position: 50% 42%;
}

section {
  margin-top: var(--space-5);
  scroll-margin-top: var(--space-4);
}

h2 {
  margin: 0 0 var(--space-3);
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.paper-label {
  margin-bottom: var(--space-1);
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.paper-label strong {
  font-weight: 600;
}

article h3 {
  margin: 0 0 var(--space-2);
  max-width: 44rem;
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.3;
}

.paper-status {
  margin: 0 0 var(--space-2);
  color: var(--muted);
  font-size: 0.9rem;
}

.abstract-disclosure summary {
  width: fit-content;
  margin-block: calc(-1 * var(--space-1));
  padding-block: var(--space-1);
  cursor: pointer;
  list-style: none;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

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

.abstract-disclosure summary::before {
  content: "[+] ";
  font-weight: 400;
}

.abstract-disclosure[open] summary::before {
  content: "[-] ";
}

.abstract-disclosure summary:hover {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.12em;
}

.abstract-disclosure summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 0.2rem;
}

.paper-abstract {
  max-width: 44rem;
  margin-top: var(--space-2);
  color: #393939;
  font-size: 0.95rem;
}

.project + .project {
  margin-top: 2.25rem;
  padding-top: 2.25rem;
  border-top: 1px solid var(--line);
}

.project-group + .project-group {
  margin-top: 2.25rem;
  padding-top: 2.25rem;
  border-top: 1px solid var(--line);
}

.project-list .project + .project {
  margin-top: 1.25rem;
  padding-top: 0;
  border-top: 0;
}

.section-introduction {
  max-width: 43rem;
}

.teaching-group {
  max-width: 46rem;
  margin-top: 2rem;
}

.teaching-group h3 {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.35;
}

.role {
  margin: 0.15rem 0 0.75rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-style: italic;
}

.course-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.course-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
  padding: 0.42rem 0;
  border-bottom: 1px solid var(--line);
}

.course-list li > span:last-child {
  color: var(--muted);
  font-size: 0.9rem;
  white-space: nowrap;
}

.language-note {
  color: var(--muted);
  font-size: 0.9rem;
  white-space: nowrap;
}

.teaching-note {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

footer {
  margin-top: 4rem;
  padding-top: var(--space-3);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

@media (min-width: 90rem) {
  html {
    font-size: 125%;
  }

  main {
    width: min(60rem, calc(100% - 8rem));
    margin-inline: auto;
    padding-top: 4rem;
  }

  .section-introduction {
    max-width: 48rem;
  }

  .teaching-group,
  article h3,
  .paper-abstract {
    max-width: 50rem;
  }
}

@media (max-width: 40rem) {
  html {
    font-size: 106.25%;
  }

  main {
    width: calc(100% - 2rem);
    margin-inline: 1rem;
    padding-top: var(--space-4);
  }

  .site-header {
    display: block;
  }

  nav {
    margin-top: var(--space-3);
  }

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

  .portrait {
    width: min(15rem, 72vw);
    margin-inline: auto;
  }

  .course-list li {
    display: block;
  }

  .course-list li > span {
    display: block;
  }

  .course-list li > span:last-child {
    margin-top: 0.1rem;
  }
}

@media print {
  main {
    width: 100%;
    padding: 0;
  }

  a {
    text-decoration: none;
  }
}