/* Case studies & insights — listing + detail */

.content-hub-page {
  --ch-dark: #0b0414;
  --ch-muted: rgba(255, 255, 255, 0.55);
  --ch-ink: #0f172a;
  --ch-slate: #475569;
  --ch-line: #e2e8f0;
  --ch-line-soft: #f1f5f9;
}

/* ─── Listing: premium white shell (MNC / advisory editorial) ─── */
.ch-page--listing {
  background: #fff;
}

.ch-container--wide {
  max-width: 1224px;
}

.ch-section {
  padding: clamp(56px, 8vw, 88px) 0;
  background: var(--bg-body);
}

.ch-section--alt {
  background: var(--bg-warm);
}

.ch-section--listing {
  background: #f8fafc;
  border-top: 1px solid var(--ch-line-soft);
}

.ch-section--listing-cta {
  background: #fff;
  border-top: 1px solid var(--ch-line);
}

.ch-listing-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: clamp(28px, 4vw, 36px) clamp(28px, 4vw, 40px);
  border: 1px solid var(--ch-line);
  border-radius: 12px;
  background: linear-gradient(180deg, #fff 0%, #fafbfc 100%);
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}

.ch-listing-cta__title {
  font-family: var(--font-heading);
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ch-ink);
  margin: 0 0 8px;
}

.ch-listing-cta__copy p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--ch-slate);
  max-width: 36rem;
}

.ch-listing-cta__btn {
  flex-shrink: 0;
  padding: 12px 28px;
  font-weight: 600;
}

/* Breadcrumb on dark heroes (case / insight detail) */
.ch-detail-hero .ch-breadcrumb,
.ins-article-hero .ch-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--ch-muted);
  margin-bottom: 20px;
}

.ch-detail-hero .ch-breadcrumb a,
.ins-article-hero .ch-breadcrumb a {
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color 0.25s ease;
}

.ch-detail-hero .ch-breadcrumb a:hover,
.ins-article-hero .ch-breadcrumb a:hover {
  color: #fff;
}

.ch-detail-hero .ch-breadcrumb .sep,
.ins-article-hero .ch-breadcrumb .sep {
  opacity: 0.35;
  user-select: none;
}

.ch-section-head {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 40px;
}

.ch-section-head h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  font-weight: 800;
  color: var(--text-primary);
  margin: 0 0 10px;
}

.ch-section-head p {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.6;
}

.ch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  gap: clamp(20px, 2.5vw, 28px);
  margin: 0 auto;
}

.ch-page--listing .ch-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--ch-line);
  border-radius: 12px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
  transition:
    transform 0.45s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.45s cubic-bezier(0.22, 1, 0.36, 1),
    border-color 0.3s ease;
}

.ch-page--listing .ch-card:hover {
  transform: translateY(-6px);
  box-shadow:
    0 24px 48px -12px rgba(15, 23, 42, 0.12),
    0 12px 24px -8px rgba(15, 23, 42, 0.06);
  border-color: #cbd5e1;
}

.ch-card__visual {
  min-height: 148px;
  padding: 28px 26px 26px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  position: relative;
}

.ch-card__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(165deg, rgba(15, 23, 42, 0.12) 0%, transparent 45%);
  pointer-events: none;
}

.ch-card__badge {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 1;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ch-ink);
  background: rgba(255, 255, 255, 0.92);
  padding: 6px 11px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.08);
}

.ch-card__stat {
  position: relative;
  z-index: 1;
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  color: #fff;
  line-height: 1;
  letter-spacing: -0.03em;
}

.ch-card__stat small {
  font-size: 0.45em;
  font-weight: 700;
  opacity: 0.92;
  margin-left: 1px;
}

.ch-card__stat-label {
  position: relative;
  z-index: 1;
  font-size: 0.75rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.88);
  margin-top: 10px;
  line-height: 1.4;
  max-width: 220px;
  letter-spacing: 0.01em;
}

.ch-card__body {
  padding: 26px 26px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--ch-line-soft);
}

.ch-card__tag {
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--primary-dark);
  margin-bottom: 10px;
}

.ch-card__title {
  font-family: var(--font-heading);
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--ch-ink);
  margin: 0 0 12px;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.ch-card__excerpt {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--ch-slate);
  margin: 0 0 20px;
  flex: 1;
}

.ch-card__metrics {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0;
  padding-top: 18px;
  border-top: 1px solid var(--ch-line);
  font-size: 0.75rem;
  color: var(--ch-slate);
  line-height: 1.35;
}

.ch-card__metrics > div {
  flex: 1 1 auto;
  min-width: 0;
  padding: 0 14px;
  border-right: 1px solid var(--ch-line-soft);
}

.ch-card__metrics > div:first-child {
  padding-left: 0;
}

.ch-card__metrics > div:last-child {
  border-right: 0;
  padding-right: 0;
}

.ch-card__metrics strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--ch-ink);
  letter-spacing: -0.02em;
  margin-bottom: 2px;
}

.ch-card__link {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--primary-dark);
  margin-top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.ch-page--listing .ch-card:hover .ch-card__link {
  color: var(--primary);
}

/* Case study detail */
.ch-detail-hero {
  background: var(--ch-dark);
  color: #fff;
  padding: calc(var(--header-height, 96px) + 28px) 0 40px;
}

.ch-detail-hero .container {
  max-width: 900px;
}

.ch-detail-hero .ch-breadcrumb {
  margin-bottom: 28px;
}

.ch-detail-kicker {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  margin: 0 0 12px;
}

.ch-detail-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0 0 20px;
  color: #fff;
}

.ch-detail-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 32px;
  padding: 24px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 8px;
}

.ch-detail-stat {
  min-width: 100px;
}

.ch-detail-stat__val {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
}

.ch-detail-stat__lbl {
  font-size: 0.75rem;
  color: var(--ch-muted);
  margin-top: 4px;
  line-height: 1.35;
}

.ch-detail-body {
  padding: clamp(48px, 7vw, 72px) 0 clamp(64px, 10vw, 100px);
  background: var(--bg-body);
}

.ch-detail-body .container {
  max-width: 720px;
}

.ch-prose h2 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 36px 0 14px;
}

.ch-prose h2:first-child {
  margin-top: 0;
}

.ch-prose p {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0 0 16px;
}

.ch-prose ul {
  margin: 0 0 20px;
  padding-left: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.ch-prose li {
  margin-bottom: 8px;
}

.ch-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
}

.ch-tech span {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--primary-010);
  color: var(--primary-dark);
}

.ch-detail-cta {
  margin-top: 40px;
  padding: 28px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary-010), rgba(139, 92, 246, 0.06));
  border: 1px solid var(--border-light);
  text-align: center;
}

.ch-detail-cta p {
  margin: 0 0 16px;
  color: var(--text-secondary);
  font-size: 1rem;
}

/* Insights listing cards */
.ins-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  gap: clamp(20px, 2.5vw, 28px);
  margin: 0 auto;
}

.ch-page--listing .ins-card {
  background: #fff;
  border: 1px solid var(--ch-line);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
  transition:
    transform 0.45s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.45s cubic-bezier(0.22, 1, 0.36, 1),
    border-color 0.3s ease;
}

.ch-page--listing .ins-card:hover {
  transform: translateY(-6px);
  box-shadow:
    0 24px 48px -12px rgba(15, 23, 42, 0.12),
    0 12px 24px -8px rgba(15, 23, 42, 0.06);
  border-color: #cbd5e1;
}

.ins-card a {
  text-decoration: none;
  color: inherit;
  display: block;
  height: 100%;
}

.ins-card__img {
  height: 0;
  padding-bottom: 58%;
  background-size: cover;
  background-position: center;
  position: relative;
  display: block;
}

.ins-card__img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.55) 0%, transparent 55%);
  pointer-events: none;
}

.ins-card__cat {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 1;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ch-ink);
  background: rgba(255, 255, 255, 0.95);
  padding: 6px 11px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.1);
}

.ins-card__body {
  padding: 26px 26px 28px;
  border-top: 1px solid var(--ch-line-soft);
}

.ins-card__meta {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #94a3b8;
  margin-bottom: 12px;
}

.ins-card__title {
  font-family: var(--font-heading);
  font-size: 1.1875rem;
  font-weight: 700;
  line-height: 1.32;
  color: var(--ch-ink);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.ins-card__excerpt {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--ch-slate);
  margin: 0 0 16px;
}

.ins-card__more {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--primary-dark);
}

.ch-page--listing .ins-card:hover .ins-card__more {
  color: var(--primary);
}

/* Insight article detail */
.ins-article-hero {
  position: relative;
  min-height: 280px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: flex-end;
  padding: calc(var(--header-height, 96px) + 24px) 0 40px;
}

.ins-article-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 4, 20, 0.92) 0%, rgba(11, 4, 20, 0.45) 50%, rgba(11, 4, 20, 0.25) 100%);
  z-index: 0;
}

.ins-article-hero .container {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.ins-article-hero .ch-breadcrumb a {
  color: rgba(255, 255, 255, 0.7);
}

.ins-article-hero .ch-breadcrumb a:hover {
  color: #fff;
}

.ins-article-hero .ch-breadcrumb .sep {
  color: rgba(255, 255, 255, 0.35);
}

.ins-article-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.65rem, 3.8vw, 2.5rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  margin: 16px 0 12px;
  letter-spacing: -0.02em;
}

.ins-article-meta {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
}

.ins-article-meta .dot {
  opacity: 0.5;
  padding: 0 8px;
}

.ins-article-body {
  padding: clamp(40px, 6vw, 56px) 0 clamp(64px, 9vw, 96px);
  background: var(--bg-body);
}

.ins-article-body .container {
  max-width: 680px;
}

.ins-article-body .ch-prose p:first-of-type {
  font-size: 1.12rem;
  color: var(--text-primary);
}

.ins-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  margin-bottom: 28px;
}

.ins-back:hover {
  color: var(--primary-dark);
}