body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  background: #fff;
  color: #111;
  line-height: 1.7;
}

.header {
  text-align: center;
  padding: 2.5rem 1rem 1rem;
  border-bottom: 1px solid #ccc;
}
.header__title {
  font-size: 2.5rem;
  font-weight: bold;
  margin: 0;
}
.header__subtitle {
  font-size: 1rem;
  color: #666;
  margin-top: 0.5rem;
}

.main {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.section {
  padding: 2rem 1rem;
  border-left: 4px solid #ccc;
  margin-bottom: 2rem;
  background-color: #f9f9f9;
}
.section--alt {
  background-color: #fff;
  border-left: 4px solid #eee;
}
.section__title {
  font-size: 1.2rem;
  font-weight: bold;
  margin-bottom: 0.8rem;
}
.section__text {
  font-size: 0.95rem;
  color: #444;
}

.footer {
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.8rem;
  color: #aaa;
  border-top: 1px solid #eee;
}