/* === Page /expertises === */
.expertises-page { background: var(--bg); color: var(--ink); min-height: 100vh; }

/* === Breadcrumb (fil d'Ariane) === */
.expertises-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mute);
  margin: 0 0 28px;
}
.expertises-breadcrumb a {
  color: var(--mute);
  text-decoration: none;
  transition: color 160ms ease;
}
.expertises-breadcrumb a:hover { color: var(--violet-2); }
.theme-light .expertises-breadcrumb a:hover { color: var(--violet-deep); }
.expertises-breadcrumb-sep { opacity: 0.5; }
.expertises-breadcrumb [aria-current="page"] { color: var(--ink-2); }

/* === Layout : main + TOC sticky === */
.expertises-content {
  padding: 40px 0 80px;
}
.expertises-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 64px;
  align-items: start;
  max-width: 1180px;
  margin: 0 auto;
}
.expertises-main {
  max-width: 760px;
  min-width: 0;
}

/* TOC sticky */
.expertises-toc {
  position: sticky;
  top: 110px;
  align-self: start;
  padding: 20px 0;
  border-left: 1px solid var(--line);
  padding-left: 18px;
}
.expertises-toc-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
  margin: 0 0 14px;
  display: block;
}
.expertises-toc ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.expertises-toc a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 0;
  color: var(--ink-2);
  text-decoration: none;
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.35;
  transition: color 160ms ease, transform 160ms ease;
}
.expertises-toc a:hover {
  color: var(--violet-2);
  transform: translateX(2px);
}
.theme-light .expertises-toc a:hover { color: var(--violet-deep); }
.expertises-toc-num {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
  flex-shrink: 0;
  min-width: 44px;
}
.expertises-toc-title { font-weight: 500; }

/* === Blocks de pilier === */
.expertise-block {
  margin-bottom: 96px;
  padding-bottom: 64px;
  border-bottom: 1px solid var(--line);
  /* Décale l'ancre sous la nav sticky */
  scroll-margin-top: 110px;
}
.expertise-block:last-of-type {
  border-bottom: none;
  margin-bottom: 64px;
}

.expertise-header {
  margin-bottom: 36px;
  position: relative;
}
.expertise-num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--violet-2);
  font-weight: 500;
}
.theme-light .expertise-num { color: var(--violet-deep); }

/* Eyebrow par pilier (reprend le pattern .eyebrow + .pulse du design system) */
.expertise-eyebrow {
  margin: 12px 0 18px;
}

.expertise-icon-circle {
  width: 56px;
  height: 56px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(var(--violet-rgb), 0.18), rgba(var(--cyan-rgb), 0.12));
  border: 1px solid rgba(var(--violet-rgb), 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--violet-2);
  margin: 4px 0 20px;
}
.theme-light .expertise-icon-circle { color: var(--violet-deep); }

.expertise-title {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(32px, 4.2vw, 48px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin: 0 0 16px;
  text-wrap: balance;
}
.expertise-title em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(135deg, var(--violet-2), var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}

.expertise-intro {
  font-family: var(--sans);
  font-size: clamp(17px, 1.4vw, 19px);
  line-height: 1.6;
  color: var(--ink-2);
  margin: 0;
  max-width: 60ch;
}

.expertise-section {
  margin-bottom: 32px;
}
.expertise-section h3 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(18px, 2vw, 22px);
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 32px 0 14px;
  padding-top: 8px;
}
.expertise-section h3::before {
  content: "";
  display: block;
  width: 32px;
  height: 2px;
  background: var(--violet-2);
  border-radius: 999px;
  margin-bottom: 12px;
}
.theme-light .expertise-section h3::before { background: var(--violet-deep); }

.expertise-section p {
  font-family: var(--sans);
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.7;
  color: var(--ink-2);
  margin: 0 0 18px;
}
.expertise-section p strong { color: var(--ink); font-weight: 600; }

.expertise-section ul {
  list-style: none;
  padding: 0;
  margin: 0 0 18px;
}
.expertise-section ul li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
  font-size: clamp(14px, 1.1vw, 16px);
  color: var(--ink-2);
  line-height: 1.5;
}
.expertise-section ul li:last-child { border-bottom: none; }
.expertise-section ul li svg {
  flex-shrink: 0;
  color: var(--cyan);
  margin-top: 4px;
}
.theme-light .expertise-section ul li svg { color: var(--cyan); }

/* === Articles de blog liés (maillage interne) === */
.expertise-related {
  margin: 28px 0 0;
  padding: 24px 28px;
  background: rgba(var(--violet-rgb), 0.05);
  border: 1px solid rgba(var(--violet-rgb), 0.15);
  border-radius: 16px;
}
.theme-light .expertise-related {
  background: rgba(var(--violet-rgb), 0.04);
  border-color: rgba(var(--violet-rgb), 0.12);
}
.expertise-related-label {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: 12px;
}
.expertise-related ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.expertise-related ul li { border: none; padding: 0; }
.expertise-related ul li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--sans);
  font-size: clamp(14px, 1.1vw, 16px);
  line-height: 1.45;
  font-weight: 500;
  border-bottom: 1px dashed var(--line);
  transition: color 160ms ease, transform 160ms ease;
}
.expertise-related ul li:last-child a { border-bottom: none; }
.expertise-related ul li a:hover {
  color: var(--violet-2);
  transform: translateX(2px);
}
.theme-light .expertise-related ul li a:hover { color: var(--violet-deep); }
.expertise-related ul li a svg {
  flex-shrink: 0;
  color: var(--violet-2);
  transition: transform 160ms ease;
}
.theme-light .expertise-related ul li a svg { color: var(--violet-deep); }
.expertise-related ul li a:hover svg { transform: translate(2px, -2px); }

.expertise-cta {
  margin-top: 28px;
}

/* === Section résultats chiffrés (KPIs) === */
.expertises-kpis {
  margin: 32px 0 96px;
  padding: 48px 40px;
  background: linear-gradient(135deg, rgba(var(--violet-rgb), 0.08), rgba(var(--cyan-rgb), 0.05));
  border: 1px solid rgba(var(--violet-rgb), 0.2);
  border-radius: 24px;
  scroll-margin-top: 110px;
}
.theme-light .expertises-kpis {
  background: linear-gradient(135deg, rgba(var(--violet-rgb), 0.05), rgba(var(--cyan-rgb), 0.03));
  border-color: rgba(var(--violet-rgb), 0.15);
}
.expertises-kpis .expertise-eyebrow {
  margin: 0 0 14px;
}
.expertises-kpis-title {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(28px, 3.5vw, 40px);
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--ink);
  margin: 0 0 32px;
  text-wrap: balance;
}
.expertises-kpis-title em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(135deg, var(--violet-2), var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.expertises-kpis-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 24px;
}
.expertises-kpi {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 130px;
}
.theme-light .expertises-kpi {
  background: rgba(255, 255, 255, 0.7);
  border-color: rgba(0, 0, 0, 0.06);
}
.expertises-kpi-value {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--violet-2), var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.theme-light .expertises-kpi-value {
  background: linear-gradient(135deg, var(--violet-deep), var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.expertises-kpi-label {
  font-family: var(--sans);
  font-size: clamp(13px, 1.05vw, 15px);
  line-height: 1.4;
  color: var(--ink-2);
}
.expertises-kpis-note {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--mute);
  margin: 0;
  line-height: 1.5;
}

/* === FAQ (accordéon natif details/summary) === */
.expertises-faq {
  margin: 0 0 96px;
  scroll-margin-top: 110px;
}
.expertises-faq .expertise-eyebrow {
  margin: 0 0 14px;
}
.expertises-faq-title {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(28px, 3.5vw, 40px);
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--ink);
  margin: 0 0 32px;
  text-wrap: balance;
}
.expertises-faq-title em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(135deg, var(--violet-2), var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.expertises-faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.expertises-faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  transition: border-color 200ms ease;
}
.theme-light .expertises-faq-item {
  background: rgba(255, 255, 255, 0.7);
  border-color: rgba(0, 0, 0, 0.06);
}
.expertises-faq-item:hover { border-color: var(--line-strong); }
.expertises-faq-item[open] {
  border-color: rgba(var(--violet-rgb), 0.3);
}
.theme-light .expertises-faq-item[open] {
  border-color: rgba(var(--violet-rgb), 0.25);
}
.expertises-faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--sans);
  font-weight: 500;
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.4;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.expertises-faq-item summary::-webkit-details-marker { display: none; }
.expertises-faq-caret {
  flex-shrink: 0;
  font-family: var(--sans);
  font-weight: 400;
  font-size: 22px;
  line-height: 1;
  color: var(--violet-2);
  transition: transform 240ms ease;
  width: 24px;
  text-align: center;
}
.theme-light .expertises-faq-caret { color: var(--violet-deep); }
.expertises-faq-item[open] .expertises-faq-caret {
  transform: rotate(45deg);
}
.expertises-faq-item p {
  margin: 0;
  padding: 0 24px 18px;
  font-family: var(--sans);
  font-size: clamp(14px, 1.15vw, 16px);
  line-height: 1.65;
  color: var(--ink-2);
}
.expertises-faq-ctas {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  padding: 0 24px 22px;
}
.expertises-faq-ctas .btn {
  font-size: 14px;
  padding: 10px 18px;
}
@media (max-width: 700px) {
  .expertises-faq-ctas { padding: 0 20px 20px; }
}

/* === Cas concrets en production === */
.expertises-cases {
  margin: 0 0 96px;
  scroll-margin-top: 110px;
}
.expertises-cases .expertise-eyebrow {
  margin: 0 0 14px;
}
.expertises-cases-title {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(28px, 3.5vw, 40px);
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--ink);
  margin: 0 0 14px;
  text-wrap: balance;
}
.expertises-cases-title em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(135deg, var(--violet-2), var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.expertises-cases-lead {
  font-family: var(--sans);
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.6;
  color: var(--ink-2);
  margin: 0 0 32px;
  max-width: 60ch;
}
.expertises-cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.expertises-case {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow: hidden;
  transition: border-color 200ms ease, transform 200ms ease;
}
.theme-light .expertises-case {
  background: rgba(255, 255, 255, 0.75);
  border-color: rgba(0, 0, 0, 0.06);
}
.expertises-case::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--violet-2), var(--cyan));
  opacity: 0.6;
}
.expertises-case:hover {
  border-color: rgba(var(--violet-rgb), 0.35);
  transform: translateY(-2px);
}
.expertises-case-tag {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--violet-2);
  background: rgba(var(--violet-rgb), 0.10);
  border: 1px solid rgba(var(--violet-rgb), 0.22);
  padding: 5px 9px;
  border-radius: 999px;
  margin: 0 0 4px;
}
.theme-light .expertises-case-tag { color: var(--violet-deep); }
.expertises-case-sector {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: 2px;
}
.expertises-case h3 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(18px, 1.9vw, 22px);
  letter-spacing: -0.015em;
  line-height: 1.2;
  color: var(--ink);
  margin: 0 0 6px;
}
.expertises-case p {
  font-family: var(--sans);
  font-size: clamp(13px, 1.05vw, 15px);
  line-height: 1.55;
  color: var(--ink-2);
  margin: 0 0 8px;
}
.expertises-case ul {
  list-style: none;
  padding: 0;
  margin: 4px 0 0;
}
.expertises-case ul li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px dashed var(--line);
  font-family: var(--sans);
  font-size: clamp(12px, 1vw, 14px);
  line-height: 1.45;
  color: var(--ink-2);
}
.expertises-case ul li:last-child { border-bottom: none; }
.expertises-case ul li svg {
  flex-shrink: 0;
  color: var(--cyan);
  margin-top: 4px;
}

/* === Stack maîtrisée === */
.expertises-stack {
  margin: 0 0 96px;
  scroll-margin-top: 110px;
}
.expertises-stack .expertise-eyebrow {
  margin: 0 0 14px;
}
.expertises-stack-title {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(28px, 3.5vw, 40px);
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--ink);
  margin: 0 0 14px;
  text-wrap: balance;
}
.expertises-stack-title em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(135deg, var(--violet-2), var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.expertises-stack-lead {
  font-family: var(--sans);
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.6;
  color: var(--ink-2);
  margin: 0 0 32px;
  max-width: 62ch;
}
.expertises-stack-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.expertises-stack-group {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px 20px;
  transition: border-color 200ms ease;
}
.theme-light .expertises-stack-group {
  background: rgba(255, 255, 255, 0.7);
  border-color: rgba(0, 0, 0, 0.06);
}
.expertises-stack-group:hover { border-color: var(--line-strong); }
.expertises-stack-group h3 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--violet-2);
  margin: 0 0 12px;
  font-weight: 500;
}
.theme-light .expertises-stack-group h3 { color: var(--violet-deep); }
.expertises-stack-group ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.expertises-stack-group ul li {
  font-family: var(--sans);
  font-size: 13.5px;
  line-height: 1.45;
  color: var(--ink-2);
  padding: 2px 0;
}

/* === Différenciateurs === */
.expertises-diff {
  margin: 0 0 96px;
  scroll-margin-top: 110px;
}
.expertises-diff .expertise-eyebrow {
  margin: 0 0 14px;
}
.expertises-diff-title {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(28px, 3.5vw, 40px);
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--ink);
  margin: 0 0 32px;
  text-wrap: balance;
}
.expertises-diff-title em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(135deg, var(--violet-2), var(--cyan));
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.expertises-diff-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.expertises-diff-card {
  background: linear-gradient(135deg, rgba(var(--violet-rgb), 0.06), rgba(var(--cyan-rgb), 0.04));
  border: 1px solid rgba(var(--violet-rgb), 0.15);
  border-radius: 20px;
  padding: 28px 26px;
  transition: border-color 200ms ease, transform 200ms ease;
}
.theme-light .expertises-diff-card {
  background: linear-gradient(135deg, rgba(var(--violet-rgb), 0.04), rgba(var(--cyan-rgb), 0.025));
  border-color: rgba(var(--violet-rgb), 0.12);
}
.expertises-diff-card:hover {
  border-color: rgba(var(--violet-rgb), 0.3);
  transform: translateY(-2px);
}
.expertises-diff-num {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--violet-2);
  margin: 0 0 12px;
  font-weight: 500;
}
.theme-light .expertises-diff-num { color: var(--violet-deep); }
.expertises-diff-card h3 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(18px, 1.9vw, 22px);
  letter-spacing: -0.015em;
  line-height: 1.25;
  color: var(--ink);
  margin: 0 0 10px;
  text-wrap: balance;
}
.expertises-diff-card p {
  font-family: var(--sans);
  font-size: clamp(14px, 1.1vw, 16px);
  line-height: 1.6;
  color: var(--ink-2);
  margin: 0;
}

/* === CTA final === */
.expertises-cta-final {
  margin-top: 0;
  padding: 56px 40px;
  background: linear-gradient(135deg, rgba(var(--violet-rgb), 0.10), rgba(var(--cyan-rgb), 0.06));
  border: 1px solid rgba(var(--violet-rgb), 0.25);
  border-radius: 24px;
  text-align: center;
}
.theme-light .expertises-cta-final {
  background: linear-gradient(135deg, rgba(var(--violet-rgb), 0.06), rgba(var(--cyan-rgb), 0.04));
  border-color: rgba(var(--violet-rgb), 0.2);
}
.expertises-cta-final h2 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: clamp(24px, 3vw, 36px);
  letter-spacing: -0.025em;
  color: var(--ink);
  margin: 0 0 14px;
  text-wrap: balance;
}
.expertises-cta-final p {
  font-family: var(--sans);
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.6;
  color: var(--ink-2);
  margin: 0 auto 28px;
  max-width: 56ch;
}
.expertises-cta-final .cta-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* === Responsive === */
@media (max-width: 1024px) {
  .expertises-layout {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .expertises-toc { display: none; }
  .expertises-main { max-width: 760px; margin: 0 auto; }
  .expertises-kpis-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .expertises-cases-grid {
    grid-template-columns: 1fr;
  }
  .expertises-stack-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 700px) {
  .expertise-block {
    margin-bottom: 64px;
    padding-bottom: 48px;
  }
  .expertise-related {
    padding: 20px 18px;
  }
  .expertises-kpis {
    padding: 36px 22px;
  }
  .expertises-kpis-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .expertises-kpi { padding: 20px 18px; min-height: 0; }
  .expertises-case { padding: 22px 20px; }
  .expertises-stack-grid {
    grid-template-columns: 1fr;
  }
  .expertises-stack-group { padding: 18px 18px; }
  .expertises-diff-grid {
    grid-template-columns: 1fr;
  }
  .expertises-diff-card { padding: 24px 22px; }
  .expertises-faq-item summary { padding: 18px 20px; }
  .expertises-faq-item p { padding: 0 20px 20px; }
  .expertises-cta-final {
    padding: 40px 24px;
  }
}