:root {
  /* Match the main page's capped wrapper with its viewport-relative gutters. */
  --site-content-width: calc(min(1440px, 100%) - 10vw);
}
html {
  scroll-padding-top: calc(var(--header-height, 76px) + 24px);
}
body > .skip {
  z-index: 100;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
  background: rgba(18, 12, 26, 0.96);
  border-bottom: 1px solid #4a355d;
  backdrop-filter: blur(12px);
}
.header-inner {
  width: var(--site-content-width);
  margin: 0 auto;
  padding: 12px 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}
.header-home {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #f3eefb;
  font-size: 0.95rem;
  font-weight: 750;
  line-height: 1.25;
  text-decoration: none;
}
.header-mark {
  flex: none;
  color: #c8f04b;
}
.header-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.header-tabs a {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  color: #c1b6d2;
  font-size: 0.82rem;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
}
.header-tabs a:hover {
  background: #30263d;
  color: #f3eefb;
}
.header-tabs a[aria-current] {
  background: #c8f04b;
  color: #141414;
  font-weight: 700;
}
.header-repository {
  padding-left: 14px;
  border-left: 1px solid #4a355d;
  color: #c1b6d2;
  font-size: 0.75rem;
  text-decoration: none;
}
.reading-layout .reading-sidebar,
.reading-layout aside > nav {
  top: calc(var(--header-height, 76px) + 20px);
  max-height: calc(100vh - var(--header-height, 76px) - 40px);
  max-height: calc(100dvh - var(--header-height, 76px) - 40px);
}
@media (max-width: 760px) {
  .header-repository { display: none; }
}
@media (max-width: 720px) {
  .reading-layout .reading-sidebar,
  .reading-layout aside > nav { max-height: none; }
}
@media (max-width: 560px) {
  .header-inner { gap: 8px; padding: 10px 0; }
  .header-home span { display: none; }
  .header-tabs a { padding: 6px 9px; font-size: 0.78rem; }
}
@media print {
  .site-header { display: none; }
}