:root {
  --background: #f7f7f5;
  --text: #333630;
  --muted: #64685f;
  --border: #dedfd9;
  --link: #4b6150;
  --max-width: 800px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.site-container {
  width: calc(100% - 80px);
  max-width: var(--max-width);
  margin: 0 auto;
}

.site-header {
  padding: 76px 0 32px;
  border-bottom: 1px solid var(--border);
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.4;
}

h2 {
  margin-bottom: 10px;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.5;
}

.site-description {
  margin-top: 12px;
  color: var(--muted);
}

main {
  padding-top: 36px;
}

section + section {
  margin-top: 36px;
}

section p + p {
  margin-top: 10px;
}

a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

a:hover {
  color: var(--text);
}

a:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 4px;
}

.contact-link,
.back-nav a,
.footer-nav a,
.icp-filing a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  max-width: 100%;
  padding: 6px 0;
  overflow-wrap: anywhere;
}

.breadcrumb {
  margin-bottom: 14px;
  color: var(--muted);
}

.breadcrumb span {
  margin: 0 8px;
}

.back-nav {
  margin-top: 12px;
}

.last-updated {
  margin-top: 36px;
  color: var(--muted);
  font-size: 15px;
}

.site-footer {
  margin-top: 44px;
  padding: 20px 0 40px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 15px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 14px;
}

.copyright,
.icp-filing {
  margin-top: 6px;
}

@media (max-width: 767px) {
  .site-container {
    width: calc(100% - 40px);
  }

  .site-header {
    padding: 40px 0 28px;
  }

  h1 {
    font-size: 28px;
  }

  main {
    padding-top: 28px;
  }

  section + section {
    margin-top: 30px;
  }

  .site-footer {
    margin-top: 36px;
    padding-bottom: 28px;
  }
}