:root {
  font-family:
    system-ui,
    -apple-system,
    'Hiragino Kaku Gothic ProN',
    Meiryo,
    sans-serif;
  color: #263c37;
  background: #eff7f2;
  font-size: 16px;
  line-height: 1.85;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
a {
  color: #155b75;
  text-underline-offset: 4px;
}
a:hover {
  color: #935514;
}
a:focus-visible {
  outline: 3px solid #d8941e;
  outline-offset: 4px;
}
header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 18px max(20px, calc((100vw - 900px) / 2));
  background: #fff;
  border-bottom: 3px solid #75c7be;
}
header > a {
  font-weight: 800;
  text-decoration: none;
}
nav {
  display: flex;
  gap: 18px;
  font-size: 14px;
}
main {
  max-width: 900px;
  margin: 32px auto;
  padding: 36px 44px;
  background: #fffef7;
  border: 2px solid #fff;
  border-radius: 24px;
  box-shadow: 0 8px 24px #25476812;
}
h1 {
  font-size: clamp(26px, 5vw, 36px);
  line-height: 1.4;
}
h2 {
  font-size: 21px;
  margin: 0 0 14px;
  color: #24596b;
}
section {
  padding: 24px 0;
  border-top: 1px solid #dae5df;
}
p {
  margin: 12px 0;
  overflow-wrap: anywhere;
}
.eyebrow {
  color: #28787c;
  font-size: 13px;
  font-weight: 700;
}
.lead {
  padding: 20px;
  background: #eaf7f3;
  border-radius: 12px;
  margin: 24px 0;
}
dl {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 12px;
}
dt {
  font-weight: 700;
}
dd {
  margin: 0;
  overflow-wrap: anywhere;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 14px;
}
caption {
  text-align: left;
  font-weight: 700;
  padding-bottom: 8px;
}
th,
td {
  border: 1px solid #dae5df;
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}
th,
td:first-child {
  white-space: nowrap;
}
th {
  background: #eaf7f3;
}
.table-scroll {
  overflow-x: auto;
}
ul {
  padding-left: 1.4em;
}
.back {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 20px;
  background: #ffdfa0;
  border-radius: 12px;
  font-weight: 700;
}
footer {
  text-align: center;
  padding: 24px;
  font-size: 13px;
}
@media (max-width: 600px) {
  main {
    margin: 16px 12px;
    padding: 24px 20px;
  }
  dl {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  dd {
    margin-bottom: 12px;
  }
  h2 {
    font-size: 19px;
  }
  table {
    font-size: 13px;
  }
}