:root {
  --text: #1a1a1a;
  --muted: #5f5f5f;
  --link: #1772d0;
  --link-hover: #d9730d;
  --border: #e7e5e0;
  --bg: #ffffff;
  --card-bg: #faf9f7;
  --max-width: 880px;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-serif: "Source Serif 4", Georgia, serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
}

a {
  color: var(--link);
  text-decoration: none;
}

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

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 64px 24px 40px;
}

/* Header */
.header {
  display: flex;
  gap: 40px;
  align-items: flex-start;
  margin-bottom: 56px;
}

.header__photo {
  flex: 0 0 160px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.header__photo img {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 8px;
  background: var(--card-bg);
}

.photo-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0;
  width: 100%;
}

.photo-links li a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
}

.photo-links svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.photo-links li a:hover {
  color: var(--link);
  text-decoration: none;
}

.name {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 600;
  margin: 0 0 6px;
}

.tagline {
  color: var(--muted);
  font-size: 17px;
  margin: 0 0 16px;
}

.bio {
  margin: 0 0 16px;
  max-width: 60ch;
}

.cta {
  margin: 0 0 20px;
  padding: 12px 16px;
  max-width: 60ch;
  background: var(--card-bg);
  border-left: 3px solid var(--link);
  border-radius: 4px;
  font-size: 15px;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.contact-links li a,
.contact-links li span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
}

.contact-links svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.contact-links li a:hover {
  color: var(--link);
  text-decoration: none;
}

/* Sections */
.section {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}

.section__title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  margin: 0 0 20px;
}

.section__subtitle {
  margin: -12px 0 20px;
  color: var(--muted);
  font-size: 14px;
}

/* News */
.news-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.news-list li {
  padding: 8px 0;
  display: flex;
  gap: 16px;
}

.news-body {
  flex: 1 1 auto;
  min-width: 0;
}

.news-date {
  flex: 0 0 96px;
  color: var(--muted);
  font-size: 14px;
}

/* Cards (research / projects) */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  display: block;
  color: var(--text);
}

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

.card__num {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--muted);
}

.card h3 {
  font-size: 16px;
  margin: 6px 0 8px;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

/* Publications */
.pub-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.pub {
  display: flex;
  gap: 24px;
}

.pub__thumb {
  flex: 0 0 140px;
}

.pub__thumb img,
.pub__thumb video {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  border-radius: 6px;
  background: var(--card-bg);
  border: 1px solid var(--border);
}

.pub__title {
  font-size: 17px;
  margin: 0 0 6px;
}

.pub__authors,
.pub__venue {
  margin: 0 0 4px;
  font-size: 14px;
  color: var(--muted);
}

.pub__desc {
  margin: 6px 0 0;
  font-size: 14px;
  color: var(--text);
}

.pub__links {
  margin: 8px 0 0;
  font-size: 14px;
}

/* Timeline / plain lists */
.timeline,
.plain-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.timeline li {
  display: flex;
  gap: 16px;
}

.timeline-date {
  flex: 0 0 120px;
  color: var(--muted);
  font-size: 14px;
}

.plain-list li {
  font-size: 15px;
}

/* Footer */
.footer {
  margin-top: 40px;
  color: var(--muted);
  font-size: 13px;
}

/* Responsive */
@media (max-width: 640px) {
  .page {
    padding: 40px 20px 32px;
  }

  .header {
    flex-direction: column;
    gap: 20px;
  }

  .pub {
    flex-direction: column;
  }

  .pub__thumb {
    flex: none;
    width: 140px;
  }
}