:root {
  --bg: #ffffff;
  --ink: #202020;
  --ink-soft: #4f4f4f;
  --line: #dddddd;
  --navy: #1f4d8f;
  --max-width: 980px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 19px;
  line-height: 1.6;
  background: var(--bg);
  min-height: 100vh;
}

a {
  color: var(--navy);
  text-decoration: underline;
  text-underline-offset: 0.12em;
}

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

.page-shell {
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
  padding: 1.75rem 0 4rem;
}

.site-header {
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
  padding: 1rem 0 0.75rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  text-decoration: none;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 0.08rem;
}

.brand-copy strong {
  color: var(--ink);
  font-size: 1.2rem;
  font-weight: 700;
}

.brand-copy span:last-child {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.site-nav a.is-active,
.site-nav a:hover,
.header-link:hover {
  color: var(--navy);
}

.header-link {
  color: var(--navy);
  font-size: 0.95rem;
  font-weight: 400;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  grid-template-areas:
    "hero-name hero-portrait"
    "hero-copy hero-portrait";
  gap: 1.5rem;
  align-items: start;
  padding: 0 0 2rem;
  margin-top: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.hero-name,
.section-heading h2,
.research-card h3,
.course-card h3,
.discussion-card h3 {
  font-family: Georgia, "Times New Roman", serif;
}

.hero-name {
  grid-area: hero-name;
  margin: 0;
  font-size: 2.8rem;
  line-height: 1.05;
}

.hero-copy {
  grid-area: hero-copy;
}

.hero-summary {
  max-width: 34rem;
  margin: 1rem 0 0;
  font-size: 1.05rem;
  color: var(--ink);
}

.hero-contact {
  display: grid;
  gap: 0.55rem;
  width: fit-content;
  max-width: 100%;
  margin-top: 1.25rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--line);
}

.hero-contact-row {
  display: grid;
  grid-template-columns: 4.5rem minmax(0, 1fr);
  align-items: start;
  gap: 0.8rem;
  margin: 0;
  font-size: 1rem;
}

.hero-contact-row + .hero-contact-row {
  padding-top: 0.55rem;
  border-top: 1px solid var(--line);
}

.hero-contact-label {
  color: var(--ink-soft);
}

.hero-contact-values {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
}

.hero-contact-values a {
  font-weight: 400;
}

.hero-portrait img {
  width: 100%;
  aspect-ratio: 0.84;
  object-fit: cover;
  object-position: center top;
}

.hero-portrait {
  grid-area: hero-portrait;
}

.research-card p,
.course-card p,
.discussion-card p {
  color: var(--ink-soft);
}

.section {
  margin-top: 2rem;
}

.section-heading {
  margin-bottom: 0.5rem;
}

.section-heading h2 {
  margin: 0;
  font-size: 1.55rem;
  line-height: 1.2;
}

.paper-links,
.course-links {
  margin: 0.35rem 0 0;
  font-size: 1rem;
}

.paper-links a,
.course-links a {
  color: var(--navy);
  font-size: 1rem;
  font-weight: 400;
}

.research-grid,
.teaching-grid {
  display: block;
}

.research-card,
.course-card,
.discussion-card {
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--line);
}

.research-card:last-child,
.course-card:last-child,
.discussion-card:last-child {
  border-bottom: 0;
}

.paper-status {
  color: var(--ink-soft);
  font-size: 1rem;
  margin: 0.2rem 0 0;
}

.research-card h3,
.course-card h3,
.discussion-card h3 {
  margin: 0;
  font-size: 1.35rem;
  line-height: 1.25;
}

.coauthors,
.discussion-authors,
.conference-meta,
.course-note,
.notes-heading {
  margin: 0.25rem 0 0;
  font-size: 1rem;
}

.course-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.85rem;
}

.course-topline {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 0;
}

.course-badge {
  display: inline-flex;
  align-items: center;
  padding: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
  line-height: 1.35;
  background: none;
}

.course-badge-code {
  color: var(--ink);
  font-weight: 600;
}

.course-badge + .course-badge::before {
  content: "·";
  margin: 0 0.4rem;
  color: var(--ink-soft);
}

.discussion-card {
  display: block;
}

.course-card h3 {
  font-size: 1.25rem;
}

.course-note {
  margin-top: 0.4rem;
}

.notes-heading {
  margin-top: 0.5rem;
}

.notes-list {
  margin: 0.35rem 0 0 1.25rem;
  padding: 0;
  list-style: none;
}

.reveal {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

@media (max-width: 1080px) {
  .site-header {
    flex-wrap: wrap;
    align-items: flex-start;
  }

  .hero {
    grid-template-columns: 1fr;
    grid-template-areas:
      "hero-name"
      "hero-portrait"
      "hero-copy";
  }

  .hero-portrait {
    max-width: 220px;
    justify-self: start;
  }

  .hero-contact {
    width: 100%;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(calc(100% - 1rem), var(--max-width));
    padding-bottom: 4rem;
  }

  .site-header {
    width: min(calc(100% - 1rem), var(--max-width));
  }

  .site-nav {
    width: 100%;
    flex-wrap: wrap;
    gap: 0.6rem 1rem;
  }

  .research-card,
  .course-card,
  .discussion-card {
    padding: 0.7rem 0;
  }

  .hero-name {
    font-size: 2.4rem;
  }

  .hero-contact-row {
    grid-template-columns: 1fr;
    gap: 0.1rem;
  }
}