:root {
  --background: #ffffff;
  --text: #1f2933;
  --muted: #5c6670;
  --line: #dedede;
  --accent: #1d5f8a;
  --max-width: 1040px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

img {
  display: block;
  height: auto;
  max-width: 100%;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover,
a:focus {
  color: var(--text);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0.7rem;
  font-size: 3rem;
  line-height: 1.1;
}

h2 {
  margin-bottom: 0;
  font-size: 1.55rem;
  line-height: 1.2;
}

h3 {
  margin: 2.25rem 0 0.75rem;
  font-size: 1.05rem;
}

#book {
  scroll-margin-top: 5rem;
}

.container {
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  min-height: 4rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1rem;
  justify-content: flex-end;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.95rem;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--text);
}

.section {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 5rem;
}

.hero {
  padding-top: 4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 18rem;
  gap: 4rem;
  align-items: center;
}

.portrait {
  margin: 0;
}

.portrait img {
  width: 18rem;
  aspect-ratio: 1;
  border-radius: 8px;
  object-fit: cover;
}

.hero-media {
  display: grid;
  gap: 1.35rem;
}

.institution-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.2rem;
  align-items: center;
}

.institution-logos a {
  display: inline-flex;
  align-items: center;
}

.institution-logos img {
  width: auto;
  max-width: 12.5rem;
  max-height: 3rem;
  object-fit: contain;
}

.eyebrow {
  margin-bottom: 0.75rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.academic-title {
  margin-bottom: 0.25rem;
  color: var(--accent);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.35;
}

.affiliation-line {
  margin-bottom: 0.25rem;
  color: var(--muted);
  font-weight: 600;
}

.official-profile {
  margin-bottom: 1.35rem;
  font-size: 0.96rem;
}

.section-link {
  margin-bottom: 1.25rem;
  font-size: 0.96rem;
}

.lead {
  font-size: 1.14rem;
  line-height: 1.7;
}

.split {
  display: grid;
  grid-template-columns: 15rem minmax(0, 1fr);
  gap: 4rem;
}

.simple-list,
.publication-list {
  padding-left: 1.25rem;
}

.simple-list {
  margin: 1rem 0 0;
}

.simple-list li {
  margin-bottom: 0.4rem;
}

.publication-list {
  margin: 1rem 0 0;
}

.publication-list li {
  margin-bottom: 0.85rem;
}

.author-me {
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.15em;
}

.book-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 8.5rem;
  gap: 1.5rem;
  align-items: start;
  max-width: 42rem;
}

.book-entry p {
  margin-bottom: 0;
}

.book-cover {
  width: 8.5rem;
  height: auto;
  border: 1px solid var(--line);
}

.course-list {
  font-size: 1.05rem;
}

.course-list a {
  color: var(--text);
  text-decoration: none;
}

.course-list a:hover,
.course-list a:focus {
  color: var(--accent);
  text-decoration: underline;
}

.site-footer {
  padding: 2rem 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer p {
  margin-bottom: 0;
}

@media (max-width: 800px) {
  h1 {
    font-size: 2.35rem;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 1rem 0;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .hero-grid,
  .split {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .portrait img {
    width: min(100%, 18rem);
  }
}

@media (max-width: 560px) {
  .book-entry {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .book-cover {
    width: 9rem;
  }
}

@media (max-width: 480px) {
  .container {
    width: min(calc(100% - 1.5rem), var(--max-width));
  }

  .section {
    padding: 3.25rem 0;
  }
}