.documentation-header {
  position: sticky;
  top: 0;
  z-index: 25;
  border-bottom: 1px solid var(--line);
  background: var(--canvas);
  background: color-mix(in srgb, var(--canvas) 88%, transparent);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  box-shadow: 0 4px 20px -12px rgba(15, 23, 42, 0.08);
}
.documentation-header-inner {
  max-width: var(--doc-width);
  margin: 0 auto;
  padding: 0 var(--doc-gutter);
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 68px;
}
.documentation-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--text);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.15s ease;
}
.documentation-brand:hover {
  opacity: 0.88;
}
.documentation-brand img {
  border-radius: 8px;
}
.documentation-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: auto;
}
.documentation-nav a {
  color: var(--muted);
  font: inherit;
  font-size: 13.5px;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  padding: 14px 0;
}
.documentation-nav a:hover {
  color: var(--text);
}
.documentation-nav a[aria-current] {
  color: var(--accent);
  font-weight: 600;
}
.documentation-header a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.documentation-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 18px;
}
.documentation-breadcrumb a {
  color: var(--muted);
  text-decoration: none;
}
.documentation-breadcrumb a:hover {
  color: var(--accent);
}
.documentation-breadcrumb span[aria-hidden="true"] {
  opacity: 0.45;
  font-size: 11px;
}
.documentation-breadcrumb [aria-current] {
  color: var(--text);
  font-weight: 600;
}
@media (max-width: 960px) {
  .documentation-header-inner {
    padding: 0 var(--doc-gutter);
    gap: 12px;
    min-height: 60px;
  }
  .documentation-nav {
    gap: 20px;
  }
  .documentation-nav a {
    font-size: 13px;
    padding: 14px 0;
  }
  .documentation-brand {
    font-size: 16px;
  }
  html {
    scroll-padding-top: 76px;
  }
}