:root {
  --case-bg: #f2f4f7;
  --case-paper: #ffffff;
  --case-rule: rgba(15, 23, 42, 0.1);
  --case-code: ui-monospace, SFMono-Regular, SF Mono, Consolas, "Liberation Mono", Menlo, monospace;
}

.case-page {
  background: var(--case-bg);
}

.case-page .section {
  background: transparent;
}

.case-page .site-header {
  background: rgba(255, 255, 255, 0.94);
  border-bottom-color: var(--border);
  backdrop-filter: blur(12px);
}

.case-page .site-header:not(.is-scrolled) .brand-logo,
.case-page .site-header.is-scrolled .brand-logo {
  filter: brightness(0);
}

.case-page .site-header:not(.is-scrolled) .nav-link,
.case-page .site-header.is-scrolled .nav-link {
  color: var(--text);
}

.case-page .site-header:not(.is-scrolled) .nav-link:hover,
.case-page .site-header:not(.is-scrolled) .nav-link:focus-visible,
.case-page .site-header.is-scrolled .nav-link:hover,
.case-page .site-header.is-scrolled .nav-link:focus-visible {
  background: rgba(15, 23, 42, 0.05);
}

.case-page .site-header:not(.is-scrolled) .nav-menu,
.case-page .site-header.is-scrolled .nav-menu {
  background: rgba(255, 255, 255, 0.98);
  border-color: var(--border);
}

.case-page .site-header:not(.is-scrolled) .nav-toggle,
.case-page .site-header.is-scrolled .nav-toggle {
  border-color: var(--border);
  background: rgba(15, 23, 42, 0.03);
  color: var(--text);
}

.case-page .site-header:not(.is-scrolled) .nav-toggle-bars,
.case-page .site-header:not(.is-scrolled) .nav-toggle-bars::before,
.case-page .site-header:not(.is-scrolled) .nav-toggle-bars::after,
.case-page .site-header.is-scrolled .nav-toggle-bars,
.case-page .site-header.is-scrolled .nav-toggle-bars::before,
.case-page .site-header.is-scrolled .nav-toggle-bars::after {
  background: var(--text);
}

.case-hero {
  position: relative;
  padding: calc(var(--header-h) + 2.75rem) 0 2rem;
  color: var(--text);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.98));
  border-bottom: 1px solid var(--border);
}

.case-hero::before,
.case-hero::after {
  display: none;
}

.case-hero-inner {
  max-width: 860px;
}

.case-backlink {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 1.1rem;
  color: var(--accent);
  font-weight: 700;
}

.case-backlink:hover,
.case-backlink:focus-visible {
  text-decoration: underline;
}

.case-kicker {
  margin: 0 0 0.8rem;
  color: var(--muted);
  font-family: var(--case-code);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-hero h1 {
  margin: 0 0 0.9rem;
  max-width: 20ch;
  font-size: clamp(2.1rem, 4vw, 3.1rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.case-summary {
  margin: 0;
  max-width: 72ch;
  color: var(--muted);
  font-size: 1.05rem;
}

.case-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.35rem;
}

.case-page .case-actions .btn-primary {
  background: var(--text);
  color: #fff;
}

.case-page .case-actions .btn-secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.case-shell {
  padding: 2rem 0 4rem;
}

.case-document {
  background: var(--case-paper);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 1.5rem;
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.06);
}

.case-frontmatter {
  margin: 0 0 1.75rem;
  padding: 1rem 1.15rem;
  border: 1px solid var(--case-rule);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.8), rgba(255, 255, 255, 0.95));
  font-family: var(--case-code);
}

.case-frontmatter::before,
.case-frontmatter::after {
  display: block;
  color: var(--muted);
}

.case-frontmatter::before {
  content: "---";
  margin-bottom: 0.45rem;
}

.case-frontmatter::after {
  content: "---";
  margin-top: 0.45rem;
}

.case-frontmatter-row {
  display: grid;
  grid-template-columns: minmax(120px, auto) minmax(0, 1fr);
  gap: 1rem;
  padding: 0.45rem 0;
  border-bottom: 1px dashed rgba(15, 23, 42, 0.12);
}

.case-frontmatter-row:last-child {
  border-bottom: 0;
}

.case-frontmatter-key {
  color: var(--muted);
  text-transform: lowercase;
}

.case-frontmatter-value {
  font-weight: 600;
}

.case-layout {
  display: grid;
  gap: 1.75rem;
}

.case-stack {
  display: grid;
  gap: 1.5rem;
}

.case-card {
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: 0;
  box-shadow: none;
}

.case-card + .case-card {
  border-top: 1px solid var(--case-rule);
  padding-top: 1.5rem;
}

.case-card h2,
.case-card h3 {
  margin: 0 0 0.7rem;
  font-size: 1.18rem;
  letter-spacing: -0.01em;
}

.case-card h2::before,
.case-card h3::before {
  margin-right: 0.55rem;
  color: var(--accent);
  font-family: var(--case-code);
  font-size: 0.94rem;
  font-weight: 700;
}

.case-card h2::before {
  content: "##";
}

.case-card h3::before {
  content: "###";
}

.case-card p:last-child {
  margin-bottom: 0;
}

.case-list {
  margin: 0;
  padding-left: 1.2rem;
  color: rgba(15, 23, 42, 0.86);
}

.case-list li + li {
  margin-top: 0.45rem;
}

.case-list li::marker {
  color: var(--accent);
}

.case-note {
  margin: 0;
  padding: 1rem 1.1rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 12px 12px 0;
  background: rgba(214, 31, 44, 0.04);
  color: var(--muted);
  font-size: 0.95rem;
}

.case-cta {
  padding: 1rem 1.1rem;
  border: 1px solid rgba(214, 31, 44, 0.18);
  border-left: 4px solid var(--accent);
  border-radius: 14px;
  background: rgba(214, 31, 44, 0.03);
}

.case-cta p {
  max-width: 54ch;
}

@media (min-width: 960px) {
  .case-layout {
    grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
    align-items: start;
  }
}

@media (max-width: 719px) {
  .case-hero {
    padding: calc(var(--header-h) + 2.2rem) 0 1.75rem;
  }

  .case-hero h1 {
    max-width: 100%;
  }

  .case-document {
    padding: 1.15rem;
  }

  .case-frontmatter-row {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }
}