:root {
  --ci-paper: #f3efe6;
  --ci-paper-strong: #ebe2d3;
  --ci-surface: rgba(250, 247, 241, 0.92);
  --ci-surface-soft: rgba(247, 242, 234, 0.88);
  --ci-ink: #1f2430;
  --ci-muted: #5d6472;
  --ci-accent: #8e3a22;
  --ci-accent-soft: rgba(142, 58, 34, 0.10);
  --ci-line: rgba(31, 36, 48, 0.10);
  --ci-shadow: 0 18px 40px rgba(31, 36, 48, 0.08);
}

html {
  scroll-behavior: smooth;
}

body {
  color: var(--ci-ink);
  background:
    radial-gradient(circle at top left, rgba(142, 58, 34, 0.07), transparent 30%),
    radial-gradient(circle at top right, rgba(84, 104, 92, 0.06), transparent 24%),
    linear-gradient(180deg, #f8f4ed 0%, var(--ci-paper) 100%);
}

.bd-container .bd-content .bd-article-container {
  max-width: 56rem;
}

.bd-main .bd-content .bd-article-container {
  padding-top: 2rem;
}

.bd-sidebar-primary,
.bd-sidebar-secondary {
  background: var(--ci-surface-soft);
  backdrop-filter: blur(10px);
}

.bd-sidebar-primary {
  border-right: 1px solid var(--ci-line);
}

.bd-sidebar-secondary {
  border-left: 1px solid var(--ci-line);
}

.bd-header {
  background: var(--ci-surface);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--ci-line);
}

.bd-header .navbar-brand,
.bd-header .navbar-nav li a {
  color: var(--ci-ink);
}

.bd-page-width {
  max-width: 96rem;
}

.bd-article-container {
  background: var(--ci-surface);
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 24px;
  box-shadow: var(--ci-shadow);
  padding: 2rem 2.5rem 3rem;
  margin-bottom: 2rem;
}

.bd-header-article,
.bd-header-article .header-article__inner,
.bd-header-article .header-article-items,
.bd-header-article .header-article-items__start,
.bd-header-article .header-article-items__end,
.bd-header-article .header-article-item {
  background: transparent !important;
  box-shadow: none !important;
  border: 0 !important;
}

.bd-header-article {
  margin: -0.25rem -0.25rem 1rem;
  padding: 0 0.25rem 0.75rem;
  border-bottom: 1px solid var(--ci-line) !important;
}

.bd-header-article .btn {
  background: rgba(255, 255, 255, 0.38);
  border-color: rgba(31, 36, 48, 0.08);
}

.bd-header-article .btn:hover,
.bd-header-article .btn:focus {
  background: rgba(255, 255, 255, 0.56);
  border-color: rgba(31, 36, 48, 0.12);
}

.bd-article-container .bd-article-header,
.bd-article-container .bd-breadcrumbs,
.bd-article-container .breadcrumb,
.bd-article-container .breadcrumb-nav,
.bd-article-container .article-header-buttons {
  background: transparent !important;
  box-shadow: none !important;
}

.bd-article-container .bd-article-header {
  border-bottom: 1px solid var(--ci-line);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: #18202c;
  font-family: "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.2rem, 3vw, 3.2rem);
  line-height: 1.05;
  margin-bottom: 1.2rem;
}

h2 {
  font-size: clamp(1.55rem, 2vw, 2rem);
  margin-top: 2.6rem;
  padding-top: 0.35rem;
  border-top: 1px solid var(--ci-line);
}

p,
li {
  color: var(--ci-ink);
  font-family: "Source Serif 4", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
  font-size: 1.04rem;
  line-height: 1.75;
}

.sidebar-primary-item,
.sidebar-secondary-item,
.navbar-nav,
.toc-entry,
.prev-next-area,
.bd-breadcrumbs,
.bd-footer {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

a {
  color: var(--ci-accent);
}

a:hover {
  color: #7b2f1a;
}

.bd-content .toctree-wrapper p.caption {
  color: var(--ci-muted);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.sidebar-primary-item .nav-link,
.toc-entry a {
  border-radius: 12px;
}

.sidebar-primary-item .nav-link:hover,
.toc-entry a:hover {
  background: var(--ci-accent-soft);
}

.sidebar-primary-item .current > .nav-link,
.toc-entry a.current,
.bd-toc .active {
  background: linear-gradient(90deg, var(--ci-accent-soft), rgba(158, 61, 34, 0.04));
  color: var(--ci-accent);
  font-weight: 600;
}

.admonition,
div.admonition {
  border: 1px solid var(--ci-line);
  border-radius: 18px;
  box-shadow: 0 8px 24px rgba(31, 36, 48, 0.04);
  overflow: hidden;
}

.admonition .admonition-title,
div.admonition > .admonition-title {
  background: linear-gradient(90deg, var(--ci-accent-soft), rgba(255, 255, 255, 0.7));
  color: #4f1f13;
  font-weight: 700;
}

div.highlight,
pre {
  border: 1px solid rgba(31, 36, 48, 0.08);
  border-radius: 16px;
}

pre {
  background: #f8f5ef;
}

.cell_output pre {
  background: #fbf8f2;
}

table {
  border-radius: 14px;
  overflow: hidden;
}

table thead tr {
  background: rgba(31, 36, 48, 0.05);
}

blockquote {
  border-left: 4px solid var(--ci-accent);
  background: rgba(248, 244, 237, 0.95);
  border-radius: 0 14px 14px 0;
  padding: 0.6rem 1rem;
}

.bd-footer-content {
  color: var(--ci-muted);
}

@media (max-width: 991.98px) {
  .bd-article-container {
    border-radius: 18px;
    padding: 1.4rem 1.2rem 2rem;
  }
}