:root {
  --text: #17232b;
  --muted: #65717a;
  --line: #dfe4e6;
  --accent: #17677b;
  --background: #ffffff;
  --soft: #f5f7f7;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--background);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
  line-height: 1.65;
}
img { display: block; max-width: 100%; }
a { color: inherit; }

.site-header,
main,
footer {
  width: min(960px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.site-name { font-weight: 700; text-decoration: none; }
nav { display: flex; gap: 24px; }
nav a { color: var(--muted); font-size: 14px; text-decoration: none; }
nav a:hover { color: var(--accent); }
nav a.current { color: var(--text); font-weight: 700; }

.intro {
  min-height: 590px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 64px;
  align-items: center;
  padding: 72px 0 88px;
}
.portrait {
  width: 220px;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: center 25%;
  border-radius: 4px;
}
.label {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
h1, h2, h3 { line-height: 1.25; }
h1 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(52px, 8vw, 78px);
  font-weight: 500;
  letter-spacing: -.04em;
}
.position { margin: 20px 0 0; font-size: 20px; font-weight: 700; }
.institution { margin: 3px 0 24px; color: var(--muted); }
.institution a { color: var(--accent); }
.bio { max-width: 590px; margin: 0 0 28px; font-size: 18px; }
.contact { display: flex; align-items: center; gap: 10px; color: var(--muted); font-family: ui-monospace, monospace; font-size: 13px; }
.icon-link {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
}
.icon-link:hover { background: var(--soft); }
.icon-link img { width: 18px; height: 18px; }

section:not(.intro) { padding: 88px 0; border-top: 1px solid var(--line); }
.section-title { margin-bottom: 40px; }
h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(38px, 6vw, 54px);
  font-weight: 500;
  letter-spacing: -.03em;
}

.projects { display: grid; gap: 0; }
.project {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 36px;
  padding: 38px 0;
  border-top: 1px solid var(--line);
}
.project:last-child { border-bottom: 1px solid var(--line); }
.project > img,
.project-placeholder {
  width: 280px;
  height: 180px;
  object-fit: contain;
  background: var(--soft);
}
.project-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: white;
  background: var(--accent);
}
.project-placeholder strong { font-family: Georgia, serif; font-size: 48px; font-weight: 500; }
.project-placeholder span { font-size: 12px; letter-spacing: .16em; }
.year { margin: 0 0 7px; color: var(--accent); font-size: 12px; font-weight: 700; text-transform: uppercase; }
.project h3 { margin: 0 0 12px; font-size: 22px; }
.project p:not(.year) { margin: 0; color: var(--muted); font-size: 14px; }
.links { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 17px; }
.links a { color: var(--accent); font-size: 13px; font-weight: 700; text-decoration: none; }
.links a:hover { text-decoration: underline; }

.records { margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.records li {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.records time { color: var(--accent); font-family: ui-monospace, monospace; font-size: 13px; }
.records strong { display: block; }
.records span { display: block; margin-top: 3px; color: var(--muted); font-size: 14px; }

footer {
  min-height: 130px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
}
footer span { color: var(--muted); font-size: 13px; }

/* Publication and Academic Activities pages */
.subpage { padding-bottom: 72px; }
.page-title { padding: 88px 0 70px; }
.page-title h1 { font-size: clamp(48px, 8vw, 72px); }
.publication-section,
.activity-section { padding: 58px 0; }
.publication-section h2,
.activity-section h2 {
  margin: 0 0 30px;
  font-size: 30px;
}
.publication-section h2 small {
  display: inline-block;
  margin-left: 8px;
  color: var(--muted);
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.publication-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
  counter-reset: publication;
}
.publication-list li {
  position: relative;
  padding: 20px 0 20px 48px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  counter-increment: publication;
}
.publication-list li::before {
  content: counter(publication, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 21px;
  color: var(--accent);
  font-family: ui-monospace, monospace;
  font-size: 12px;
}
.publication-list em { color: var(--text); font-style: normal; font-weight: 600; }
.external-note { margin: 24px 0 0; color: var(--muted); font-size: 14px; }
.external-note a { color: var(--accent); font-weight: 700; }
.simple-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.simple-list li { padding: 20px 0; border-bottom: 1px solid var(--line); }
.review-groups { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.review-groups article { padding: 26px; background: var(--soft); }
.review-groups article.wide { grid-column: 1 / -1; }
.review-groups h3 { margin: 0 0 12px; font-size: 17px; }
.review-groups ul { margin: 0; padding-left: 20px; color: var(--muted); font-size: 14px; }
.review-groups p { margin: 0; color: var(--muted); font-size: 14px; }

@media (max-width: 720px) {
  .site-header { align-items: flex-start; gap: 20px; padding: 18px 0; }
  nav { justify-content: flex-end; flex-wrap: wrap; gap: 5px 14px; }
  nav a { font-size: 11px; }
  .intro { grid-template-columns: 1fr; gap: 36px; padding: 52px 0 72px; }
  .portrait { width: min(60%, 220px); }
  .contact { flex-wrap: wrap; }
  .contact span { width: 100%; margin-top: 6px; }
  .project { grid-template-columns: 1fr; gap: 24px; }
  .project > img, .project-placeholder { width: 100%; height: 220px; }
  .records li { grid-template-columns: 1fr; gap: 4px; }
  .page-title { padding: 64px 0 42px; }
  .publication-section, .activity-section { padding: 42px 0; }
  .review-groups { grid-template-columns: 1fr; }
  .review-groups article.wide { grid-column: auto; }
}

@media (max-width: 440px) {
  .site-name { font-size: 14px; }
  .site-header { display: block; }
  nav { justify-content: flex-start; margin-top: 12px; }
}