* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  background-color: #f6f8fa;
  color: #24292e;
  line-height: 1.6;
}

/* Header styles */
header {
  background-color: #006699;
  padding: 3rem 2rem;
  text-align: center;
  color: white;
}
header h1 {
  font-size: 2.5rem;
  font-weight: 600;
}
header p {
  font-size: 1.25rem;
  margin-top: 0.5rem;
}

/* Main content */
main {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1rem;
  background-color: #fff;
  border-radius: 6px;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

/* Section styling */
section {
  padding: 2rem 0;
}
section h2 {
  border-bottom: 2px solid #eaecef;
  padding-bottom: 0.3rem;
  margin-bottom: 1rem;
  color: #0366d6;
}

/* Links */
a {
  color: #006699;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* Navigation Bar */
nav {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 20px;
}

nav a {
  text-decoration: none;
  color: white;
  font-size: 1.1rem;
  padding: 10px 20px;
  transition: color 0.3s ease;
}

nav a:hover {
  color: white; 
}

/* Footer */
footer {
  text-align: center;
  padding: 1.5rem;
  color: #586069;
  font-size: 0.9rem;
}

/* Project list */
ul {
  list-style: none;
  padding-left: 0;
}
li {
  margin-bottom: 0.15rem;
}

/* Publications */
.pub-list {
list-style-type: square;
margin-left: 20px;
}

.pub-list li {
margin-bottom: 14px;
line-height: 1.5;
}

.journal {
color: #222;
display: block;
margin-bottom: 20px;
}

.research-list {
list-style-type: square;
margin-left: 20px;
}

/* Authors */
.author-link {
  color: inherit;        
  text-decoration: underline;
}

#about {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  padding: 2rem;
  flex-wrap: wrap;
}

.about-image {
  flex: 0 0 260px;
  text-align: center;
}

.about-image img {
  width: 260px;
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.about-text {
  flex: 1 1 400px;
  min-width: 0;
  max-width: 800px;
}

.about-text p {
  margin-bottom: 1rem;
}

@media (max-width: 768px) {
  #about {
    flex-direction: column;
    align-items: center;
    text-align: left;
    padding: 1.5rem;
    gap: 1.5rem;
  }

  .about-image {
    flex: 0 0 auto;
  }

  .about-image img {
    width: 220px;
  }

  .about-text {
    width: 100%;
  }
}