:root {
  --background: #eef9fc;
  --header: #cceffc;
  --header-border: #75bfe2;
  --paper: #ffffff;
  --text: #24343c;
  --muted: #64747c;
  --link: #176f9d;
  --link-hover: #0b5278;
  --rule: #c7e1ec;
  --photo-border: #8aa8b6;
  --page-width: 1040px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--background);
}

body {
  margin: 0;
  color: var(--text);
  background: var(--background);
  font-family: Georgia, "Yu Mincho", "Hiragino Mincho ProN", "Hiragino Mincho Pro", serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-text-size-adjust: 100%;
}

a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--link-hover);
}

a:focus-visible {
  outline: 2px solid var(--header-border);
  outline-offset: 3px;
}

.site-header {
  width: 100%;
  background: var(--header);
  border-bottom: 2px solid var(--header-border);
}

.header-inner {
  width: min(calc(100% - 32px), var(--page-width));
  margin: 0 auto;
  padding: 25px 0 18px;
  text-align: center;
}

.site-header h1 {
  margin: 0;
  color: #173f54;
  font-size: clamp(1.7rem, 4vw, 2.25rem);
  font-weight: 600;
  line-height: 1.25;
}

.affiliation {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.affiliation a {
  color: inherit;
}

.language-nav {
  margin-top: 9px;
  color: #75909d;
  font-size: 0.9rem;
}

.language-nav a {
  margin: 0 7px;
  text-decoration: none;
}

.main-container {
  width: min(calc(100% - 40px), var(--page-width));
  margin: 38px auto 46px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 48px;
  align-items: start;
}

.content-section {
  min-width: 0;
  padding: 0 4px;
}

.profile-section > :first-child {
  margin-top: 0;
}

.position {
  margin-bottom: 0.35rem;
}

.email,
.cv-link {
  margin: 0.35rem 0;
}

.content-section h2 {
  margin: 2.1rem 0 0.75rem;
  padding-bottom: 0.28rem;
  color: #194f69;
  border-bottom: 1px solid var(--rule);
  font-size: 1.32rem;
  font-weight: 600;
  line-height: 1.35;
}

.content-section p {
  margin-top: 0.65rem;
}

.expandable-section {
  margin-top: 2.1rem;
  border-bottom: 1px solid var(--rule);
}

.expandable-section summary {
  padding: 0 0 0.32rem;
  color: #194f69;
  font-size: 1.32rem;
  font-weight: 600;
  line-height: 1.35;
  cursor: pointer;
  user-select: none;
}

.expandable-section summary:hover {
  color: var(--link-hover);
}

.expandable-section summary:focus-visible {
  outline: 2px solid var(--header-border);
  outline-offset: 4px;
}

.expandable-content {
  padding: 0.25rem 0 0.45rem;
}

.publication-list {
  margin: 0.65rem 0 0;
  padding-left: 1.7rem;
}

.publication-list li {
  margin: 0 0 0.8rem;
  padding-left: 0.2rem;
}

.paper-title {
  font-weight: 600;
}

.authors,
.citation {
  color: #364a54;
}

.event-list {
  margin: 0.65rem 0 0;
  padding-left: 1.25rem;
  list-style: none;
}

.event-list li {
  margin: 0 0 1rem;
}

.event-title {
  display: block;
  font-weight: 600;
}

.event-meta {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.empty-note {
  color: var(--muted);
  font-size: 0.94rem;
}

.photo-section {
  padding-top: 4px;
}

.photo-section img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--photo-border);
  border-radius: 4px;
  background: var(--paper);
}

.secret-link {
  display: block;
  color: inherit;
  text-decoration: none;
  cursor: default;
}

.secret-link:hover,
.secret-link:focus,
.secret-link:active,
.secret-link:visited {
  color: inherit;
  text-decoration: none;
}

.secret-link:focus-visible {
  outline: 1px solid var(--header-border);
  outline-offset: 4px;
  border-radius: 5px;
}

.site-footer {
  width: min(calc(100% - 40px), var(--page-width));
  margin: 0 auto;
  padding: 18px 0 28px;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.78rem;
  text-align: center;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 760px) {
  body {
    font-size: 15.5px;
  }

  .header-inner {
    padding-top: 21px;
  }

  .main-container {
    width: min(calc(100% - 30px), var(--page-width));
    margin-top: 28px;
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .photo-section {
    grid-row: 1;
    width: min(55vw, 220px);
    margin: 0 auto;
    padding-top: 0;
  }

  .content-section {
    grid-row: 2;
    padding: 0;
  }

  .content-section h2,
  .expandable-section summary {
    font-size: 1.24rem;
  }

  .content-section h2,
  .expandable-section {
    margin-top: 1.85rem;
  }

  .site-footer {
    width: min(calc(100% - 30px), var(--page-width));
  }
}