body {
  margin: 0;
  background: #ffffff;
  color: #000000;
  font-family: "Noto Sans JP", sans-serif;
  line-height: 1.7;
}

.layout {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2em;
  padding: 2em 1em 4em;
}

nav {
  border-right: 1px solid #000000;
  padding-right: 2em;
}

.avatar {
  display: block;
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 6px;
  margin-bottom: 1em;
}

nav h1 {
  font-size: 1.7em;
  line-height: 1.3;
  margin: 0 0 0.3em;
}

nav h1 span {
  font-size: 0.6em;
  font-weight: normal;
}

.tagline {
  font-size: 0.8em;
  letter-spacing: 0.05em;
  color: #444444;
  margin-top: 0;
}

nav ul {
  list-style: none;
  padding: 0;
  margin-top: 1.5em;
}

nav li {
  margin-bottom: 0.6em;
}

nav a {
  text-decoration: none;
}

nav a:hover {
  text-decoration: underline;
}

section {
  margin-bottom: 2em;
}

h2 {
  font-size: 1.3em;
  border-bottom: 1px solid #000000;
  padding-bottom: 0.2em;
}

#about p,
#affiliation > p {
  font-size: 0.9em;
}

dl {
  margin: 0;
}

dt {
  font-size: 1.1em;
  font-weight: 700;
  margin-top: 1.6em;
}

.role {
  font-size: 0.75em;
  color: #333333;
}

dt:first-child {
  margin-top: 0;
}

dd {
  margin: 0.15em 0 0 0;
  color: #555555;
  font-size: 0.85em;
  line-height: 1.6;
}

a,
a:visited {
  color: #0000ee;
}

#affiliation summary {
  width: fit-content;
  cursor: pointer;
}

#affiliation details + details {
  margin-top: 0.6em;
}

#affiliation .detail {
  margin-top: 0.6em;
  padding-left: 1em;
  margin-bottom: 0.6em;
  border-left: 1px solid #000000;
}

#affiliation .detail h3 {
  font-size: 1em;
  color: #333333;
  margin: 1em 0 0.2em;
}

#affiliation .detail h3:first-child {
  margin-top: 0;
}

#affiliation .detail ul {
  margin: 0;
  padding-left: 1.2em;
}

#affiliation .detail p {
  margin: 0;
}

#contact dt {
  font-size: 0.95em;
}

.icon {
  width: 1.1em;
  height: 1.1em;
  margin-right: 0.45em;
  vertical-align: -0.2em;
}

footer {
  font-size: 0.8em;
  color: #444444;
  margin-top: 3em;
}

@media (max-width: 820px) {
  .layout {
    grid-template-columns: 1fr;
    gap: 1em;
  }
  nav {
    border-right: none;
    border-bottom: none;
    padding-right: 0;
    padding-bottom: 0;
  }
  nav ul {
    margin-bottom: 0;
    font-size: 0.85em;
  }
  nav li:last-child {
    margin-bottom: 0;
  }
}