body {
  font-family: "Inter", "Arial", sans-serif;
  line-height: 1.6;
  color: #1f2937;
  background: #f8fafc;
}

.container-fluid.main-container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

h1, h2, h3 {
  margin-top: 1.4em;
  color: #0f172a;
}

h2 {
  border-bottom: 2px solid #e2e8f0;
  padding-bottom: 0.4rem;
}

p, li {
  font-size: 1rem;
}

.plotly,
.leaflet,
.html-widget {
  margin-top: 1rem;
  margin-bottom: 1.75rem;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
  background: #ffffff;
}

.tocify {
  border-radius: 10px;
}

.navbar {
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.08);
}

.action-button {
  display: inline-block;
  margin-top: 0.5rem;
  margin-bottom: 1rem;
  padding: 0.7rem 1rem;
  border-radius: 8px;
  background: #0f766e;
  color: #ffffff !important;
  text-decoration: none;
  font-weight: 600;
}

.action-button:hover {
  background: #115e59;
}