:root {
  color-scheme: light;
  --web-background: #ECE9E2;
  --web-primary-text: #1C1812;
  --web-body-text: #5D554A;
  --web-muted-text: #6D6357;
  --web-accent: #80602E;
  --web-divider: #DED4C4;
  --web-surface: #F7F3EB;
  --site-desktop-gutter: 88px;
  --site-desktop-top: 52px;
  --site-mobile-top: 30px;
  --reading-max-width: 48rem;
  --mobile-gutter: 1.125rem;
  background: var(--web-background);
  color: var(--web-primary-text);
  font-family: Georgia, "Songti SC", "STSong", "Noto Serif CJK SC", "Noto Serif SC", serif;
}

* { box-sizing: border-box; }

html { min-height: 100%; background: var(--web-background); }

body {
  min-height: 100%;
  margin: 0;
  background: var(--web-background);
  color: var(--web-primary-text);
  line-height: 1.75;
  padding-top: var(--site-desktop-top);
}

.site-header {
  width: auto;
  height: 2.375rem;
  margin-inline: var(--site-desktop-gutter);
  margin-bottom: 1.75rem;
  padding: 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  position: relative;
  z-index: 20;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--web-primary-text);
  text-decoration: none;
}

.brand-mark {
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", Georgia, serif;
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: 0.1375rem;
  line-height: 2.375rem;
  white-space: nowrap;
}

.brand-name {
  color: var(--web-body-text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.14375rem;
  line-height: 2.375rem;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-navigation {
  display: flex;
  align-items: center;
  gap: 1.125rem;
  font-family: "Helvetica Neue", Arial, "PingFang SC", sans-serif;
}

.site-navigation a {
  color: var(--web-primary-text);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.075rem;
  line-height: 1.625rem;
  text-decoration: none;
  white-space: nowrap;
}

.brand:hover,
.site-navigation a:hover { opacity: 0.82; }

.brand:focus-visible,
.site-navigation a:focus-visible {
  outline: 1px solid var(--web-accent);
  outline-offset: 0.35rem;
}

.navigation-divider {
  width: 1px;
  height: 0.875rem;
  background: var(--web-muted-text);
  opacity: 0.55;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 2rem;
  color: var(--web-muted-text);
  font-family: "Helvetica Neue", Arial, "PingFang SC", sans-serif;
  font-size: 0.8125rem;
  letter-spacing: 0.035rem;
  line-height: 1.4;
}

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

.breadcrumb a:hover { color: var(--web-primary-text); }

@media (max-width: 767px) {
  body { padding-top: var(--site-mobile-top); }

  .site-header {
    width: 100%;
    height: 2.75rem;
    min-height: 2.75rem;
    margin: 0;
    padding: 0 var(--mobile-gutter);
    align-items: center;
    flex-wrap: nowrap;
  }

  .brand {
    flex-shrink: 0;
    gap: 0.4375rem;
    min-height: 2.75rem;
  }

  .brand-mark {
    font-size: 1.625rem;
    letter-spacing: 0.0875rem;
    line-height: 2rem;
  }

  .brand-name {
    font-size: 0.65625rem;
    letter-spacing: 0.0875rem;
    line-height: 2rem;
  }

  .site-navigation {
    margin-left: auto;
    flex-shrink: 0;
    gap: 0.75rem;
  }

  .site-navigation a {
    min-height: 2.75rem;
    display: inline-flex;
    align-items: center;
    font-size: 0.75rem;
    letter-spacing: 0.01875rem;
    line-height: 1.25rem;
  }

  .navigation-divider { display: none; }
  .breadcrumb { margin-bottom: 1.5rem; }
}

@media (max-width: 389px) {
  :root { --mobile-gutter: 1rem; }
  .brand-mark { font-size: 1.5rem; line-height: 1.875rem; }
  .brand-name { font-size: 0.625rem; letter-spacing: 0.075rem; line-height: 1.875rem; }
  .site-navigation { gap: 0.5625rem; }
  .site-navigation a { font-size: 0.71875rem; line-height: 1.1875rem; }
}

@media (max-width: 359px) {
  :root { --mobile-gutter: 0.75rem; }
  .brand { gap: 0.3125rem; }
  .brand-mark { font-size: 1.375rem; line-height: 1.75rem; }
  .brand-name { font-size: 0.59375rem; letter-spacing: 0.0625rem; line-height: 1.75rem; }
  .site-navigation { gap: 0.4375rem; }
  .site-navigation a { font-size: 0.65625rem; letter-spacing: 0.0125rem; line-height: 1.125rem; }
}