:root {
  --bg: #faf9f7;
  --bg-alt: #f0eeea;
  --text: #1a1a1a;
  --text-muted: #5c5c5c;
  --accent: #8b1a1a;
  --accent-hover: #6d1414;
  --border: #ddd9d2;
  --max-width: 760px;
  --font-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 249, 247, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25rem 1.25rem;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
}

.nav-link:hover {
  color: var(--text);
  text-decoration: none;
}

.nav-link--accent {
  color: var(--accent);
}

/* Hero */
.hero {
  padding: 4rem 0 3.5rem;
  border-bottom: 1px solid var(--border);
}

.hero__layout {
  display: flex;
  align-items: flex-start;
  gap: 2rem;
}

.hero__photo-wrap {
  flex-shrink: 0;
}

.hero__photo {
  display: block;
  width: 240px;
  height: auto;
  object-fit: contain;
}

.hero__content {
  flex: 1;
  min-width: 0;
}

.hero__name {
  margin: 0 0 0.5rem;
  font-size: clamp(2.2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.hero__title {
  margin: 0 0 0.35rem;
  font-size: 1.15rem;
  color: var(--text-muted);
}

.hero__affiliation {
  margin: 0 0 1.25rem;
  font-size: 1rem;
}

.hero__bio {
  margin: 0 0 1.25rem;
  max-width: 42rem;
}

.hero__contact {
  margin-bottom: 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.hero__contact .sep {
  margin: 0 0.4rem;
}

.hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-block;
  padding: 0.5rem 1.1rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  text-decoration: none;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
}

.btn--primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

.btn--outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn--outline:hover {
  border-color: var(--text-muted);
  color: var(--text);
}

/* Sections */
.section {
  padding: 3rem 0;
}

.section--alt {
  background: var(--bg-alt);
}

.section__title {
  margin: 0 0 1.75rem;
  font-size: 1.35rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: var(--font-sans);
  color: var(--text-muted);
}

.section__subtitle {
  margin: -1rem 0 1.75rem;
  color: var(--text-muted);
  font-style: italic;
}

/* Timeline */
.timeline__item {
  display: grid;
  grid-template-columns: 9.5rem 1fr;
  gap: 1rem 1.5rem;
  padding-bottom: 1.75rem;
  margin-bottom: 1.75rem;
  border-bottom: 1px solid var(--border);
}

.timeline__item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.timeline__meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.65rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-muted);
  padding-top: 0.15rem;
}

.timeline__date {
  display: block;
  line-height: 1.4;
}

.timeline__logo {
  flex-shrink: 0;
  width: 68px;
  height: 68px;
  object-fit: contain;
}

.timeline__logo--wide {
  width: auto;
  max-width: 112px;
  height: 54px;
}

.timeline__content h3 {
  margin: 0 0 0.2rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.timeline__location {
  margin: 0 0 0.35rem;
  font-style: italic;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.timeline__content p:last-child {
  margin: 0;
}

/* Tags */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.tag-list li {
  padding: 0.35rem 0.85rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 0.875rem;
}

/* Publications */
.pub-list {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

.pub--with-figure {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

.pub__figure {
  flex-shrink: 0;
  width: 160px;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #fff;
}

.pub__body {
  flex: 1;
  min-width: 0;
}

.pub__title {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.45;
}

.pub__link {
  font-weight: 400;
  font-size: 0.9rem;
  white-space: nowrap;
}

.pub__authors {
  margin: 0 0 0.2rem;
  font-style: italic;
}

.pub__venue {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Awards */
.award-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.award-list li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}

.award-list li:last-child {
  border-bottom: none;
}

.award-list__date {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Footer */
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.site-footer p {
  margin: 0;
}

/* Responsive */
@media (max-width: 600px) {
  .timeline__item {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .hero__layout {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .hero__photo {
    width: 180px;
  }

  .hero__links {
    justify-content: center;
  }

  .pub--with-figure {
    flex-direction: column;
  }

  .pub__figure {
    width: 100%;
    max-width: 280px;
  }

  .hero {
    padding: 2.5rem 0 2rem;
  }

  .section {
    padding: 2.25rem 0;
  }
}