* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #333;
  background-color: #fff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 60px 40px;
}

@media (max-width: 768px) {
  main {
    padding: 40px 20px;
  }
}

/* Profile Header */
.profile-header {
  display: flex;
  gap: 40px;
  margin-bottom: 50px;
  align-items: flex-start;
}

@media (max-width: 768px) {
  .profile-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 30px;
  }
}

.profile-photo {
  flex-shrink: 0;
}

.profile-photo img {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid #e0e0e0;
}

@media (max-width: 768px) {
  .profile-photo img {
    width: 150px;
    height: 150px;
  }
}

.profile-info {
  flex: 1;
}

.profile-info h1 {
  font-size: 32px;
  font-weight: 600;
  color: #222;
  margin-bottom: 8px;
}

.profile-info .title {
  font-size: 18px;
  color: #555;
  margin-bottom: 8px;
}

.profile-info .affiliation {
  font-size: 16px;
  color: #666;
  margin-bottom: 6px;
}

.profile-info .supervisor {
  font-size: 16px;
  color: #666;
  margin-bottom: 16px;
}

.contact-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 16px;
}

@media (max-width: 768px) {
  .contact-links {
    justify-content: center;
  }
}

.contact-links .separator {
  color: #ccc;
}

/* Links */
a {
  color: #1a73e8;
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: #1557b0;
  text-decoration: underline;
}

/* Sections */
section {
  margin-bottom: 50px;
}

section h2 {
  font-size: 24px;
  font-weight: 600;
  color: #222;
  margin-bottom: 24px;
  padding-bottom: 8px;
  border-bottom: 2px solid #e0e0e0;
}

/* Bio */
.bio p {
  font-size: 17px;
  line-height: 1.7;
  color: #444;
}

/* Publications */
.pub-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.pub-item {
  padding: 20px;
  background-color: #f9f9f9;
  border-radius: 6px;
  border: 1px solid #e8e8e8;
}

.pub-title {
  font-size: 17px;
  font-weight: 600;
  color: #222;
  margin-bottom: 8px;
  line-height: 1.4;
}

.pub-authors {
  font-size: 15px;
  color: #555;
  margin-bottom: 6px;
  line-height: 1.5;
}

.pub-venue {
  font-size: 15px;
  color: #1a73e8;
  font-weight: 500;
}

/* Education */
.edu-item {
  margin-bottom: 24px;
}

.edu-header {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
}

@media (max-width: 768px) {
  .edu-header {
    flex-direction: column;
    gap: 8px;
  }
}

.edu-degree {
  font-size: 17px;
  font-weight: 600;
  color: #222;
  margin-bottom: 4px;
}

.edu-school {
  font-size: 16px;
  color: #555;
}

.edu-date {
  font-size: 15px;
  color: #666;
  white-space: nowrap;
}

/* Lists */
.simple-list {
  list-style: none;
  padding: 0;
}

.simple-list li {
  font-size: 16px;
  color: #444;
  margin-bottom: 12px;
  padding-left: 20px;
  position: relative;
}

.simple-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: #999;
}

/* Footer */
footer {
  margin-top: 80px;
  padding-top: 30px;
  border-top: 1px solid #e0e0e0;
  text-align: center;
  color: #999;
  font-size: 14px;
}