:root {
  --bg: #f8f8fb;
  --surface: #ffffff;
  --ink: #1e1b2e;
  --muted: #57536a;
  --brand: #6b21a8;
  --brand-ink: #3f125f;
  --cyan: #0891b2;
  --teal: #0d9488;
  --coral: #f97316;
  --line: #e4deef;
  --line-strong: #d2c8e3;
  --side-bg: #fbf9ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Noto Sans", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}

a {
  color: var(--brand-ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

h1,
h2,
h3 {
  color: var(--brand);
  line-height: 1.25;
}

h1 {
  margin: 0;
  font-size: clamp(1.75rem, 3vw, 2.3rem);
}

h2 {
  margin: 0 0 0.65rem;
  font-size: 1.35rem;
}

h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
}

.site-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px 1fr;
}

.sidebar {
  background: var(--side-bg);
  border-right: 1px solid var(--line);
  padding: 1.2rem 1rem;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.brand-lockup {
  display: inline-block;
}

.brand-lockup img {
  width: min(220px, 100%);
  height: auto;
  display: block;
}

.sidebar-tagline {
  margin: 0.75rem 0 1.15rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.side-nav {
  display: grid;
  gap: 0.22rem;
}

.side-nav-title {
  margin: 0.85rem 0 0.3rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--teal);
  text-transform: uppercase;
}

.side-nav-title.active-group {
  color: var(--brand);
}

.side-nav a {
  display: block;
  border-radius: 0.42rem;
  padding: 0.32rem 0.48rem;
  color: var(--ink);
  text-decoration: none;
  font-size: 0.92rem;
}

.side-nav a:hover {
  background: #f3edf9;
  color: var(--brand-ink);
}

.side-nav a.active {
  background: #efe7f8;
  color: var(--brand-ink);
  font-weight: 700;
  border-left: 3px solid var(--brand);
  padding-left: calc(0.48rem - 3px);
}

.sidebar-footer {
  margin-top: 1.2rem;
  padding-top: 0.95rem;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 0.45rem;
}

.sidebar-footer img {
  width: 38px;
  height: 38px;
  display: block;
}

.sidebar-footer a {
  font-size: 0.9rem;
}

.main-shell {
  min-width: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.top-header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  padding: 1.25rem 2rem;
}

.top-header.compact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.crumb {
  font-weight: 700;
  color: var(--brand-ink);
  text-decoration: none;
}

.repo-link {
  color: var(--muted);
  font-size: 0.9rem;
}

.hero-logo {
  width: min(260px, 82%);
  max-width: 100%;
  height: auto;
  display: block;
  margin-left: auto;
  margin-right: 0;
  margin-bottom: 0.8rem;
  object-fit: contain;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--teal);
  font-size: 0.78rem;
}

.lead {
  margin: 0.7rem 0 0;
  max-width: 70ch;
  color: var(--muted);
}

.content {
  padding: 1.4rem 2rem 2rem;
  display: grid;
  gap: 1rem;
}

.docs-content {
  max-width: 1040px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  padding: 1rem 1.05rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
}

.card {
  border: 1px solid var(--line);
  border-radius: 0.55rem;
  padding: 0.85rem;
  background: #fdfcff;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.cta-row {
  margin-top: 1rem;
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  border: 1px solid var(--line-strong);
  padding: 0.52rem 0.85rem;
  border-radius: 0.45rem;
  text-decoration: none;
  color: var(--ink);
  background: var(--surface);
  font-weight: 700;
  font-size: 0.92rem;
}

.btn-primary {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}

.btn-sm {
  margin-top: 0.65rem;
  padding: 0.4rem 0.68rem;
  font-size: 0.85rem;
}

.toc-panel {
  background: #fbf9ff;
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  padding: 0.85rem 0.95rem;
}

.toc-panel h2 {
  margin: 0 0 0.55rem;
  font-size: 1rem;
  color: var(--teal);
}

.toc-panel ul {
  margin: 0;
  padding-left: 1.1rem;
}

.toc-panel li {
  margin: 0.2rem 0;
}

.doc-article {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  padding: 1rem 1.15rem;
}

.doc-article :first-child {
  margin-top: 0;
}

.doc-article h2 {
  margin-top: 1.8rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line);
}

.doc-article pre {
  background: #201b30;
  color: #f3f0ff;
  border-radius: 0.5rem;
  padding: 0.8rem 0.95rem;
  overflow-x: auto;
}

.doc-article code {
  background: #f3edf9;
  color: var(--brand-ink);
  padding: 0.13em 0.35em;
  border-radius: 0.25rem;
  font-size: 0.9em;
}

.doc-article pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.doc-article table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

.doc-article th,
.doc-article td {
  border: 1px solid var(--line-strong);
  padding: 0.45rem 0.55rem;
  text-align: left;
}

.doc-article th {
  background: #f5f0fb;
}

.doc-article blockquote {
  margin: 1rem 0;
  border-left: 4px solid var(--cyan);
  background: #f4fbfd;
  padding: 0.45rem 0.8rem;
  color: #3e4e60;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 2rem 1.35rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer a {
  color: var(--brand-ink);
}

@media (max-width: 980px) {
  .site-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

  .top-header,
  .content,
  .site-footer {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}