body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.7;
  color: #333;
  background-color: #fff;
}

main {
  max-width: 900px;
  margin: auto;
  padding: 2em;
}

h1, h2, h3 {
  font-weight: 600;
  margin-top: 1.5em;
}

h1 { font-size: 2.2em; }
h2 { font-size: 1.7em; }
h3 { font-size: 1.3em; }

p {
  margin-bottom: 1em;
}

a {
  color: #0056b3;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

figure {
  margin: 2em 0;
}

figcaption {
  font-size: 0.9em;
  color: #666;
  text-align: center;
  margin-top: 0.5em;
}

blockquote {
  margin: 1.5em;
  padding: 1em;
  background: #f9f9f9;
  border-left: 4px solid #ccc;
  font-style: italic;
}

ul, ol {
  padding-left: 2em;
}

dl dt {
  font-weight: bold;
}

dl dd {
  margin-bottom: 1em;
}

section {
  margin-bottom: 2.5em;
}