:root {
  color-scheme: light;
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
  color: #172d35;
  background: #f3f6f5;
  line-height: 1.6;
}

* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
main {
  width: min(100% - 3rem, 64rem);
  margin-inline: auto;
}
.masthead {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-block: 2rem;
  border-bottom: 1px solid #cbd6d3;
}
.brand {
  font-size: 1.25rem;
  font-weight: 750;
  letter-spacing: -0.04em;
}
.label {
  font-size: 0.875rem;
  color: #415d64;
}
.intro {
  padding-block: 4rem 2.5rem;
  max-width: 50rem;
}
.eyebrow,
.card-label,
.notice-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #365951;
}
h1 {
  font-size: clamp(2.5rem, 7vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.05em;
  margin: 0.75rem 0 1.25rem;
}
.lead {
  font-size: 1.2rem;
  color: #415d64;
  max-width: 38rem;
}
.notice {
  background: #fff;
  border: 1px solid #cbd6d3;
  border-left: 4px solid #6b7860;
  border-radius: 0.5rem;
  padding: 1.5rem;
  margin-top: 2rem;
}
.notice p {
  margin: 0.5rem 0 0;
  font-size: 1.1rem;
  font-weight: 650;
}
.notice .notice-detail {
  font-size: 0.95rem;
  font-weight: 400;
  color: #415d64;
}
h2 {
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}
.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
article {
  background: #e5eeeb;
  padding: 1.5rem;
  border-radius: 0.5rem;
}
article p {
  margin: 0;
}
h3 {
  font-size: 1.3rem;
  margin: 0.5rem 0 0.75rem;
}
.next {
  padding-block: 2.5rem;
  max-width: 48rem;
}
ol {
  margin: 0;
  padding-left: 1.5rem;
}
li {
  padding-left: 0.25rem;
  margin-block: 0.75rem;
}
footer {
  border-top: 1px solid #cbd6d3;
  padding-block: 1.5rem 2rem;
  color: #415d64;
  font-size: 0.875rem;
}

@media (max-width: 36rem) {
  main {
    width: calc(100% - 2rem);
  }
  .masthead {
    padding-block: 1.25rem;
  }
  .intro {
    padding-block: 2.5rem 2rem;
  }
  .cards {
    grid-template-columns: 1fr;
  }
  .notice,
  article {
    padding: 1.25rem;
  }
}