:root {
  color-scheme: light;
  --bg: #fbfbfd;
  --surface: #ffffff;
  --surface-muted: #f1f5f9;
  --text: #182033;
  --muted: #5d6678;
  --border: #d9dee8;
  --primary: #0f6b7a;
  --accent: #b8455b;
  --code: #253044;
}
* { box-sizing: border-box; }
html { min-width: 0; overflow-x: hidden; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Urbanist, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  min-width: 0;
  overflow-x: hidden;
}
a { color: var(--primary); text-underline-offset: 0.18em; }
.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 20;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.5rem 0.75rem;
}
.skip-link:focus { top: 1rem; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 0;
  padding: 0.9rem clamp(1rem, 3vw, 2.5rem);
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
}
.brand {
  flex: 0 0 auto;
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
}
.search {
  position: relative;
  display: grid;
  gap: 0.25rem;
  width: min(28rem, 100%);
  margin-left: auto;
}
.search span {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
}
.search input {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.55rem 0.7rem;
  font: inherit;
}
.search-results {
  position: absolute;
  right: clamp(1rem, 3vw, 2.5rem);
  top: 4.8rem;
  width: min(34rem, calc(100vw - 2rem));
  max-height: 60vh;
  overflow: auto;
  margin: 0;
  padding: 0.4rem;
  list-style: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 18px 60px rgba(15, 23, 42, 0.18);
}
.search-results li { display: grid; gap: 0.1rem; padding: 0.55rem 0.65rem; }
.search-results span { color: var(--muted); font-size: 0.82rem; }
.site-shell {
  display: grid;
  grid-template-columns: minmax(13rem, 18rem) minmax(0, 1fr);
  gap: clamp(1rem, 4vw, 3rem);
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: clamp(1rem, 3vw, 2.5rem);
}
.side-nav {
  align-self: start;
  position: sticky;
  top: 5.8rem;
  max-height: calc(100vh - 7rem);
  overflow: auto;
  padding-right: 0.3rem;
}
.nav-group { margin-bottom: 1.1rem; }
.nav-group h2 {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.76rem;
  text-transform: uppercase;
}
.nav-group ul { list-style: none; margin: 0; padding: 0; }
.nav-group a {
  display: block;
  border-radius: 6px;
  color: var(--text);
  padding: 0.35rem 0.5rem;
  text-decoration: none;
}
.nav-group a[aria-current="page"], .nav-group a:hover { background: var(--surface-muted); color: var(--primary); }
.content {
  min-width: 0;
  max-width: 780px;
}
article {
  min-width: 0;
  overflow-wrap: anywhere;
}
h1, h2, h3, h4, h5, h6 {
  line-height: 1.25;
  margin: 1.8rem 0 0.7rem;
}
h1 { margin-top: 0; font-size: 2.25rem; }
h2 { font-size: 1.55rem; border-top: 1px solid var(--border); padding-top: 1.3rem; }
h3 { font-size: 1.2rem; }
.heading-anchor {
  display: inline-block;
  width: 1.1em;
  margin-left: -1.1em;
  color: var(--muted);
  opacity: 0;
  text-decoration: none;
}
h1:hover .heading-anchor, h2:hover .heading-anchor, h3:hover .heading-anchor, h4:hover .heading-anchor { opacity: 1; }
p, li { color: var(--text); }
code {
  border-radius: 4px;
  background: var(--surface-muted);
  color: var(--code);
  padding: 0.1rem 0.25rem;
  font-size: 0.92em;
}
pre {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #111827;
  color: #f9fafb;
  padding: 1rem;
}
pre code { background: transparent; color: inherit; padding: 0; }
.table-wrap {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
}
table { width: 100%; min-width: 34rem; border-collapse: collapse; background: var(--surface); }
th, td { border-bottom: 1px solid var(--border); padding: 0.65rem 0.75rem; text-align: left; vertical-align: top; }
th { background: var(--surface-muted); font-weight: 800; }
blockquote {
  margin-left: 0;
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  color: var(--muted);
}
@media (max-width: 820px) {
  .site-header {
    position: static;
    display: grid;
  }
  .search { margin-left: 0; width: 100%; }
  .search-results { top: 7.3rem; left: 1rem; right: 1rem; }
  .site-shell {
    display: block;
    padding: 1rem;
  }
  .side-nav {
    position: static;
    max-height: none;
    margin-bottom: 1.5rem;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
  }
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.3rem; }
}