/* ── HERO ─────────────────────────────────────────────────────── */
.preuves-hero {
  padding: calc(var(--nav-h, 80px) + 104px) var(--gutter) 112px;
  background: var(--ink);
  color: var(--paper);
  position: relative;
  overflow: hidden;
}
.preuves-hero::before {
  content: '';
  position: absolute;
  top: -120px; right: -180px;
  width: 640px; height: 640px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(132,212,154,0.11) 0%, transparent 65%);
  pointer-events: none;
}
.preuves-hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0; height: 1px;
  background: rgba(132,212,154,0.2);
}
.preuves-hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 80px;
  align-items: end;
  position: relative; z-index: 1;
}
.preuves-hero h1 {
  font-size: clamp(38px, 5vw, 72px);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1.04;
  margin-bottom: 28px;
}
.preuves-hero .lede {
  color: rgba(251,250,246,0.65);
  max-width: 52ch;
  margin-bottom: 36px;
}
.preuves-hero-meta {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-self: end;
  padding-bottom: 6px;
}
.proof-count-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(132,212,154,0.15);
}
.proof-count-item:last-child { border-bottom: none; padding-bottom: 0; }
.proof-count-item .num {
  font-size: clamp(32px, 3.5vw, 52px);
  font-weight: 300;
  letter-spacing: -0.04em;
  color: var(--algae);
  line-height: 1;
}
.proof-count-item .label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(251,250,246,0.4);
  text-transform: uppercase;
}

/* ── SECTION LAYOUT ───────────────────────────────────────────── */
.section { padding: 96px 0; }
.section-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.section-split {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 80px;
  align-items: start;
}
.section-split-label {
  position: sticky;
  top: 100px;
}
.section-split-label .eyebrow { margin-bottom: 16px; }
.section-split-label h2 {
  font-size: clamp(24px, 2.8vw, 38px);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
}
.section-split-label p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

/* ── ACCORDION (Définition / Protocole / Publication / Discipline) */
.accord-block {
  border-bottom: 1px solid var(--line);
}
.accord-block:first-child { border-top: 1px solid var(--line); }
.accord-trigger {
  width: 100%;
  display: grid;
  grid-template-columns: 120px 1fr 32px;
  gap: 32px;
  align-items: center;
  padding: 28px 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-sans);
  transition: background 150ms;
}
.accord-trigger:hover { background: none; }
.accord-trigger .acc-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.accord-trigger .acc-title {
  font-size: clamp(16px, 1.4vw, 19px);
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.accord-trigger .acc-chevron {
  width: 24px; height: 24px;
  border-radius: 50%;
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: background 200ms, border-color 200ms;
}
.accord-trigger .acc-chevron svg { transition: transform 300ms cubic-bezier(.2,.6,.2,1); }
.accord-block.open .acc-chevron { background: var(--algae); border-color: var(--algae); }
.accord-block.open .acc-chevron svg { transform: rotate(180deg); }
.accord-block.open .acc-chevron svg path { stroke: var(--ink); }
.accord-body {
  display: none;
  padding: 0 0 36px 152px;
}
.accord-block.open .accord-body { display: block; }
.accord-dark .accord-trigger .acc-tag { color: rgba(251,250,246,0.4); }
.accord-dark .accord-trigger .acc-title { color: var(--paper); }
.accord-dark .accord-trigger .acc-chevron { border-color: rgba(132,212,154,0.25); }
.accord-dark .accord-block { border-color: rgba(132,212,154,0.15); }
.accord-dark .accord-block:first-child { border-color: rgba(132,212,154,0.15); }

/* ── CONDITIONS (5 preuves) ───────────────────────────────────── */
.conditions-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  counter-reset: cond;
}
.condition-item {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 32px;
  padding: 36px 0;
  border-top: 1px solid var(--line);
  align-items: baseline;
  counter-increment: cond;
}
.condition-item:last-child { border-bottom: 1px solid var(--line); }
.condition-item::before {
  content: "0" counter(cond);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--algae);
  font-weight: 500;
  padding-top: 2px;
}
.condition-item .cond-body h4 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.condition-item .cond-body p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.65;
  max-width: 68ch;
}

.conditions-note {
  margin-top: 40px;
  padding: 20px 24px;
  background: var(--mist);
  border-left: 3px solid var(--algae);
  border-radius: 0 8px 8px 0;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.65;
}

/* ── PROTOCOL STEPS ───────────────────────────────────────────── */
.protocol-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  counter-reset: step;
}
.protocol-step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 40px;
  padding: 48px 0;
  border-top: 1px solid var(--line);
  align-items: start;
  counter-increment: step;
}
.protocol-step:last-child { border-bottom: 1px solid var(--line); }
.protocol-step .step-num {
  font-size: clamp(44px, 5vw, 68px);
  font-weight: 200;
  letter-spacing: -0.05em;
  color: var(--algae);
  line-height: 1;
  padding-top: 4px;
}
.protocol-step h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.protocol-step p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.7;
  max-width: 64ch;
}

.protocol-note {
  margin-top: 40px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 24px;
  background: var(--ink);
  border-radius: 12px;
  color: var(--paper);
  font-size: 14px;
  font-weight: 500;
}
.protocol-note::before {
  content: '';
  width: 8px; height: 8px;
  background: var(--algae);
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 12px var(--algae);
}

/* ── PUBLICATION LIST ─────────────────────────────────────────── */
.pub-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.pub-list li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
}
.pub-list li:first-child { border-top: 1px solid var(--line); }
.pub-list li::before {
  content: '→';
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--algae);
  flex-shrink: 0;
  margin-top: 1px;
}

/* ── DISCIPLINE SECTION (dark) ────────────────────────────────── */
.discipline-section {
  background: var(--ink);
  color: var(--paper);
  padding: 96px 0;
}
.discipline-section .eyebrow { color: var(--algae); }
.discipline-section h2 { color: var(--paper); }
.discipline-section .section-split-label p { color: rgba(251,250,246,0.5); }

.discipline-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.discipline-list li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(132,212,154,0.12);
  font-size: 15px;
  line-height: 1.6;
  color: rgba(251,250,246,0.75);
  align-items: baseline;
}
.discipline-list li:first-child { border-top: 1px solid rgba(132,212,154,0.12); }
.discipline-list li .icon {
  font-family: var(--font-mono);
  font-size: 16px;
  color: rgba(255,80,80,0.7);
  font-weight: 600;
  line-height: 1.6;
}
.discipline-note {
  margin-top: 32px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(251,250,246,0.35);
  text-transform: uppercase;
}

/* ── REFERENCES ───────────────────────────────────────────────── */
.refs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}
.ref-group h4 {
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.ref-group ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.ref-group li {
  font-size: 14px;
  line-height: 1.55;
  color: var(--muted);
  padding-left: 12px;
  border-left: 2px solid var(--line);
}
.ref-group li strong {
  display: block;
  color: var(--ink);
  font-weight: 500;
  font-size: 13px;
  margin-bottom: 2px;
}

/* ── CLIENTS SECTION ──────────────────────────────────────────── */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 64px;
}
.client-cell {
  background: var(--paper);
  padding: 28px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 80px;
  overflow: hidden;
  transition: background 200ms;
  isolation: isolate;
}
.client-cell:hover { background: var(--mist); }
.client-cell span {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
  text-align: center;
  opacity: 0.75;
  transition: opacity 200ms;
}
.client-cell:hover span { opacity: 1; }

.client-logo {
  height: 56px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  filter: grayscale(1) opacity(0.55);
  transition: filter 200ms;
}
.client-logo[alt="Bouygues Construction"] { filter: grayscale(1) opacity(0.45); height: 52px; }
.client-cell:hover .client-logo { filter: grayscale(1) opacity(0.85); }
.client-cell:hover .client-logo[alt="Bouygues Construction"] { filter: grayscale(1) opacity(0.85); }

/* Per-logo size harmonization */
.client-logo[alt="Ayming"]                 { height: 82px; }
.client-logo[alt="Département du Nord"]    { height: 30px; }
.client-logo[alt="La French Tech"]         { height: 40px; }
.client-logo[alt="EY"]                     { height: 48px; }
.client-logo[alt="Keolis"]                 { height: 48px; }
.client-logo--eura {
  height: 56px;
  max-width: none;
  transform: scale(2.8);
}

.clients-note {
  font-size: 12px;
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  margin-top: -48px;
  margin-bottom: 64px;
  line-height: 1.6;
}

/* ── NAMED CLIENTS ────────────────────────────────────────────── */
.named-clients {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 16px;
}
.named-client-card {
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.named-client-card .org-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.named-client-card .org-type {
  font-size: 13px;
  color: var(--muted);
}
.press-source {
  margin-top: 24px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.press-source a { color: var(--leaf); text-decoration: underline; text-underline-offset: 3px; }

/* ── HIGHLIGHTS (métro, CBRE, testimonial) ────────────────────── */
.highlight-block {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 32px;
}
.highlight-block-head {
  padding: 28px 36px;
  background: var(--ink);
  color: var(--paper);
  display: flex;
  align-items: center;
  gap: 16px;
}
.highlight-block-head .tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(132,212,154,0.15);
  color: var(--algae);
  flex-shrink: 0;
}
.highlight-block-head h3 {
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--paper);
}
.highlight-block-body {
  padding: 28px 36px;
  background: var(--paper);
}
.highlight-block-body p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 14px;
}
.highlight-block-body p:last-child { margin-bottom: 0; }
.highlight-source {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.highlight-source a { color: var(--leaf); text-decoration: underline; text-underline-offset: 3px; }

.testimonial-block {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px;
  background: var(--mist);
  margin-bottom: 32px;
}
.testimonial-block blockquote {
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.45;
  color: var(--ink);
  margin-bottom: 20px;
  quotes: '\00AB' '\00BB';
}
.testimonial-block blockquote::before { content: open-quote; color: var(--algae); }
.testimonial-block blockquote::after  { content: close-quote; color: var(--algae); }
.testimonial-block cite {
  font-size: 13px;
  font-style: normal;
  color: var(--muted);
  font-family: var(--font-mono);
}
.testimonial-block cite a { color: var(--leaf); text-decoration: underline; text-underline-offset: 3px; }

/* ── AWARDS ───────────────────────────────────────────────────── */
.awards-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  counter-reset: award;
}
.award-item {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.5;
  align-items: baseline;
  counter-increment: award;
}
.award-item:first-child { border-top: 1px solid var(--line); }
.award-item::before {
  content: counter(award, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding-top: 3px;
}
.award-item span { color: var(--ink); }
.award-item small {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}

.press-logos {
  margin-top: 32px;
  padding: 20px 24px;
  background: var(--cream);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}
.press-logos strong { color: var(--ink); }

/* ── CAS MESURÉS ──────────────────────────────────────────────── */
.cas-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.cas-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.cas-card-head {
  padding: 28px 32px;
  background: var(--ink);
  color: var(--paper);
}
.cas-card-head .cas-sector {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--algae);
  margin-bottom: 10px;
}
.cas-card-head h3 {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin-bottom: 4px;
}
.cas-card-head .cas-sub {
  font-size: 13px;
  color: rgba(251,250,246,0.45);
}
.cas-metric {
  padding: 28px 32px;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 24px;
}
.cas-metric .big-num {
  font-size: clamp(44px, 5vw, 64px);
  font-weight: 200;
  letter-spacing: -0.04em;
  color: var(--algae);
  line-height: 1;
}
.cas-metric .big-num span {
  font-size: 0.5em;
  vertical-align: super;
  font-weight: 400;
  letter-spacing: -0.02em;
}
.cas-metric .metric-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.55;
}
.cas-body {
  padding: 24px 32px;
}
.cas-body ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cas-body ul li {
  display: flex;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}
.cas-body ul li::before {
  content: '·';
  color: var(--algae);
  font-size: 18px;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 1px;
}
.cas-source {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.cas-source a { color: var(--leaf); text-decoration: underline; text-underline-offset: 3px; }

.cas-conditions {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  margin-top: 48px;
}
.cas-conditions p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 10px;
}
.cas-conditions ul {
  list-style: none;
  margin-bottom: 16px;
}
.cas-conditions ul li {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  font-size: 14px;
  color: var(--muted);
  border-bottom: 1px solid var(--line-soft);
}
.cas-conditions ul li::before {
  content: '✓';
  color: var(--algae);
  font-size: 13px;
  flex-shrink: 0;
  margin-top: 1px;
}
.cas-conditions .cas-disclaimer {
  margin-top: 32px;
  padding: 20px 24px;
  background: var(--cream);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--muted);
  line-height: 1.65;
  border-left: 3px solid var(--line);
}

/* ── CTA FINAL ────────────────────────────────────────────────── */
.cta-preuves {
  background: var(--ink);
  color: var(--paper);
  padding: 112px var(--gutter);
  text-align: center;
}
.cta-preuves .eyebrow { color: var(--algae); margin-bottom: 20px; }
.cta-preuves h2 {
  font-size: clamp(28px, 3.5vw, 52px);
  font-weight: 400;
  letter-spacing: -0.03em;
  max-width: 22ch;
  margin: 0 auto 16px;
  color: var(--paper);
}
.cta-preuves .lede {
  color: rgba(251,250,246,0.6);
  max-width: 52ch;
  margin: 0 auto 36px;
  font-size: 16px;
}
.cta-preuves .cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-outline-light {
  background: transparent;
  color: rgba(251,250,246,0.75);
  border: 1px solid rgba(251,250,246,0.25);
  padding: 12px 22px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  transition: all 200ms;
}
.btn-outline-light:hover { border-color: rgba(251,250,246,0.6); color: var(--paper); }

/* ── RESPONSIVE ───────────────────────────────────────────────── */
@media (max-width: 900px) {
  .preuves-hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .preuves-hero-meta { flex-direction: row; }
  .proof-count-item { border-bottom: none; border-right: 1px solid rgba(132,212,154,0.15); padding-right: 20px; padding-bottom: 0; }
  .proof-count-item:last-child { border-right: none; }
  .section-split { grid-template-columns: 1fr; gap: 40px; }
  .section-split-label { position: static; }
  .refs-grid { grid-template-columns: 1fr; gap: 32px; }
  .clients-grid { grid-template-columns: repeat(3, 1fr); }
  .named-clients { grid-template-columns: 1fr 1fr; }
  .cas-grid { grid-template-columns: 1fr; }
  .highlights-row { grid-template-columns: 1fr !important; }
  .accord-trigger { grid-template-columns: 90px 1fr 32px; gap: 20px; }
  .accord-body { padding-left: 110px; }
}
@media (max-width: 600px) {
  .clients-grid { grid-template-columns: repeat(2, 1fr); }
  .named-clients { grid-template-columns: 1fr; }
  .condition-item { grid-template-columns: 40px 1fr; gap: 16px; }
  .protocol-step { grid-template-columns: 56px 1fr; gap: 24px; }
  .cas-metric .big-num { font-size: 40px; }
}

/* Scroll reveal */
[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity 0.55s cubic-bezier(.2,.6,.2,1), transform 0.55s cubic-bezier(.2,.6,.2,1); }
[data-reveal].revealed { opacity: 1; transform: none; }