body {
  font-family: 'Noto Sans KR', Arial, sans-serif;
  margin: 0;
  background: #f7f7f7;
  color: #222;
}
nav {
  background: #2c3e50;
  padding: 0.5em 0;
}
nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  margin: 0;
  padding: 0;
}
nav ul li {
  margin: 0 1em;
}
nav ul li a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: color 0.2s;
}
nav ul li a:hover {
  color: #f39c12;
}
main {
  max-width: 700px;
  margin: 2em auto;
  background: #fff;
  padding: 2em;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}
h1 {
  color: #2980b9;
  margin-bottom: 1em;
}
img {
  display: block;
  margin: 0 auto 1em auto;
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}
p {
  font-size: 1.1em;
  line-height: 1.7;
}