/* 学术风格主题增强 */
:root {
  --primary: #2C3E50;
  --secondary: #3498DB;
  --light: #ECF0F1;
  --dark: #2C3E50;
}

body {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  line-height: 1.8;
  color: var(--primary);
}

.navbar {
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.profile {
  width: 200px;
  border-radius: 50%;
  margin: 20px auto;
  display: block;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

h1, h2 {
  border-bottom: 2px solid var(--secondary);
  padding-bottom: 0.3em;
  margin-top: 2em;
}

code {
  background-color: var(--light);
  padding: 2px 4px;
  border-radius: 3px;
}

blockquote {
  border-left: 4px solid var(--secondary);
  padding-left: 1em;
  color: #666;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .navbar ul {
    flex-direction: column;
  }
}