*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0 16px;
  font-family: system-ui, -apple-system, "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif;
  line-height: 1.6;
  color: #1f2933;
  background: #ffffff;
  overflow-wrap: break-word;
}

header, main, footer {
  max-width: 720px;
  margin: 0 auto;
}

.site-name {
  font-weight: 700;
  color: #1f5fae;
}

footer {
  margin-top: 3em;
  padding: 1em 0;
  border-top: 1px solid #cbd2d9;
  font-size: 0.9em;
}