:root {
  --md-primary-fg-color: #1d4ed8;
  --md-accent-fg-color: #06b6d4;
}

.md-header {
  background: linear-gradient(90deg, #0f172a 0%, #1d4ed8 100%);
  box-shadow: 0 6px 24px rgba(15, 23, 42, 0.2);
}

.md-tabs {
  background-color: rgba(15, 23, 42, 0.95);
}

.md-footer-meta {
  background-color: #0f172a;
}

.md-typeset a {
  color: #2563eb;
}

.md-typeset h1, .md-typeset h2 {
  color: #0f172a;
}

.md-footer-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.md-footer-links a {
  color: #e2e8f0;
  font-weight: 600;
  text-decoration: none;
}

.md-footer-links a:hover {
  color: #67e8f9;
}

.md-footer-copyright {
  font-size: 0.8rem;
  color: #cbd5e1;
  opacity: 0.9;
}

.skill-tree {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.skill-card {
  background: linear-gradient(135deg, #f8fafc 0%, #eff6ff 100%);
  border: 1px solid #dbeafe;
  border-radius: 16px;
  padding: 1rem 1.1rem;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.skill-root {
  border-color: #60a5fa;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
}

.skill-card h3 {
  margin-top: 0;
  margin-bottom: 0.4rem;
}

.skill-card ul {
  margin: 0.4rem 0 0;
  padding-left: 1.1rem;
}