/* 绿色学术主题 */
:root {
  --primary-green: #2E7D32;
  --secondary-green: #81C784;
  --accent-green: #C8E6C9;
  --dark-text: #2E312F;
}

body {
  font-family: 'Noto Serif SC', serif;
  background-color: #f8f9fa;
  line-height: 1.8;
  color: var(--dark-text);
}

.navbar {
  background-color: var(--primary-green)!important;
  border-bottom: 3px solid var(--secondary-green);
}

.navbar-dark .navbar-nav .nav-link {
  color: rgba(255,255,255,.8) !important;
}

h1, h2, h3 {
  color: var(--primary-green);
  border-bottom: 2px solid var(--accent-green);
  padding-bottom: 0.3em;
}

.profile-img {
  border-radius: 50%;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  margin-left: 2rem;
}

.callout {
  background-color: var(--accent-green);
  border-left: 4px solid var(--secondary-green);
  padding: 1.5rem;
  margin: 2rem 0;
}

@media (max-width: 768px) {
  .profile-img {
    float: none!important;
    margin: 0 auto 2rem;
    display: block;
  }
}