body {
  font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', sans-serif;
  font-size: 18px;
  line-height: 1.7;
  color: #000000;
  background-color: #ffffff;
  margin: 0;
  padding: 0;
}

/* Centered Content */
.md-content {
  max-width: 960px;
  margin: auto;
  padding: 2rem 1.5rem;
}

/* ======== HEADINGS ======== */
h1 {
  font-size: 2.65em;
  font-weight: 700;
  color: #047ff9;
  border-bottom: 2px solid #cce0ff;
  padding-bottom: 0.3em;
  text-align: center;
}

h2 {
  font-size: 1.8em;
  font-weight: 600;
  color: #004080;
  border-bottom: 1px solid #cce0ff;
  padding-bottom: 0.2em;
  margin-top: 1.2em;
}

h3 {
  font-size: 1.4em;
  font-weight: 500;
  color: #0059b3;
  margin-top: 1em;
}

h4 {
  font-size: 1.2em;
  font-weight: 500;
  color: #0245aa;
}