:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: #1f2933;
  background: #ffffff;
  line-height: 1.75;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #ffffff;
  color: #1f2933;
}

a {
  color: #176b4d;
  text-underline-offset: 0.18em;
  overflow-wrap: anywhere;
}

a:focus-visible {
  outline: 3px solid #99d5bd;
  outline-offset: 3px;
  border-radius: 4px;
}

.site-header {
  border-bottom: 1px solid #e5e7eb;
  background: #ffffff;
}

.site-header__inner,
.document-shell,
.site-footer {
  width: min(100% - 40px, 760px);
  margin-inline: auto;
}

.site-header__inner {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  color: #173f32;
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

nav a {
  color: #52606d;
  text-decoration: none;
}

nav a[aria-current="page"] {
  color: #176b4d;
  font-weight: 650;
}

.document-shell {
  padding-block: 52px 72px;
}

.document-shell article {
  max-width: 760px;
}

.draft-notice {
  display: inline-block;
  margin: 0 0 20px;
  padding: 6px 10px;
  border: 1px solid #d6dee3;
  border-radius: 6px;
  color: #52606d;
  background: #f8faf9;
  font-size: 14px;
}

h1,
h2,
h3 {
  color: #173f32;
  line-height: 1.35;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(30px, 6vw, 42px);
  letter-spacing: -0.025em;
}

h2 {
  margin: 48px 0 14px;
  font-size: 24px;
}

h3 {
  margin: 30px 0 10px;
  font-size: 19px;
}

p,
li,
td,
th {
  font-size: 16px;
}

ul,
ol {
  padding-left: 1.35em;
}

li + li {
  margin-top: 8px;
}

.document-meta {
  color: #697784;
  font-size: 14px;
}

.table-of-contents {
  display: block;
  margin: 32px 0 44px;
  padding: 20px 22px;
  border-left: 3px solid #70b89c;
  background: #f7faf9;
}

.table-of-contents a {
  display: block;
  margin-block: 6px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-block: 22px;
}

th,
td {
  padding: 12px;
  border: 1px solid #d8dee3;
  text-align: left;
  vertical-align: top;
}

th {
  background: #f7faf9;
}

.site-footer {
  padding-block: 28px 40px;
  border-top: 1px solid #e5e7eb;
  color: #697784;
}

.site-footer p {
  margin: 6px 0;
  font-size: 14px;
}

@media (max-width: 640px) {
  .site-header__inner,
  .document-shell,
  .site-footer {
    width: min(100% - 28px, 760px);
  }

  .site-header__inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding-block: 16px;
  }

  .document-shell {
    padding-block: 36px 56px;
  }

  nav {
    gap: 12px;
  }

  h2 {
    margin-top: 38px;
  }

  table {
    display: block;
    overflow-x: auto;
  }
}

@media print {
  .site-header,
  .table-of-contents,
  .site-footer,
  .draft-notice {
    display: none;
  }

  .document-shell {
    width: 100%;
    padding: 0;
  }

  a {
    color: inherit;
    text-decoration: none;
  }
}