.sciences-hero {
  position: relative;
  background: var(--c-mint) url('../images/illustrations/bureau-recherche.webp') center 65% / cover no-repeat;
  padding: 150px 0 96px;
  isolation: isolate;
}
.sciences-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--c-dark-18);
  z-index: -1;
}
.sciences-hero-inner {
  max-width: 900px;
  text-align: center;
}
.sciences-hero-card {
  background: var(--c-white);
  border-radius: var(--radius-card);
  padding: 48px 56px;
  box-shadow: var(--shadow-white);
}
.sciences-hero-inner h1 {
  font-size: 54px;
  line-height: 1.08;
  letter-spacing: -0.015em;
  text-wrap: balance;
  margin-top: 0;
}
.sciences-hero-card > p {
  font-size: 19px;
  line-height: 1.7;
  color: var(--c-teal-deep);
  max-width: 62ch;
  margin: 22px auto 0;
}

.sciences-section {
  background: var(--c-white);
  padding: 64px 0 0;
}
.sciences-section--top { padding-top: 56px; }
.sciences-section--cta { padding: 72px 0 96px; }

.sciences-container-md { max-width: 920px; }

.sciences-disclaimer {
  background: var(--c-purple-light);
  border-radius: 16px;
  padding: 20px 24px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.sciences-disclaimer-icon {
  flex: none;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--c-white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.sciences-disclaimer p {
  font-size: 17px;
  line-height: 1.8;
  color: var(--c-purple-deep);
}

.sciences-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-text-soft);
  margin-bottom: 12px;
}
.sciences-h2 {
  font-size: 34px;
  line-height: 1.12;
  max-width: 24ch;
}
.sciences-h2--wide { max-width: 26ch; }
.sciences-h3-sm { font-size: 20px; }

.sciences-cartes {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 32px;
}
.sciences-cartes-grid2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.sciences-cartes-grid2 + .sciences-carte,
.sciences-carte + .sciences-cartes-grid2 {
  margin-top: 18px;
}

.sciences-carte {
  background: var(--c-white);
  border: 1px solid var(--c-card-border);
  border-radius: var(--radius-card);
  padding: 30px 32px;
  box-shadow: 0 18px 50px -36px var(--c-dark-40);
  display: flex;
  gap: 24px;
}
.sciences-cartes-grid2 .sciences-carte { padding: 28px 30px; }

.sciences-carte-logo {
  flex: none;
  width: 112px;
  height: 88px;
  border-radius: 14px;
  background: var(--c-gray);
  border: 1px solid var(--c-card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
}
.sciences-carte-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.sciences-carte-logo--text {
  font-family: var(--font-heading);
  font-size: 15px;
  line-height: 1.15;
  text-align: center;
  color: var(--c-text-soft);
}
.sciences-carte-body { flex: 1; min-width: 0; }

.sciences-carte h3 {
  font-size: 22px;
  margin: 14px 0 8px;
}
.sciences-carte p:not(.sciences-ref) {
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text-soft);
  margin-bottom: 16px;
}
.sciences-ref {
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-dark);
  border-top: 1px solid var(--c-ref-border);
  padding-top: 14px;
}
.sciences-ref-sub { color: var(--c-text-soft); }
.ref-link {
  font-weight: 600;
  white-space: nowrap;
  transition: color var(--t-fast);
}
.ref-link:hover { color: var(--c-purple); }

.sciences-badge-white { background: var(--c-white); color: var(--c-dark); }

.sciences-carte--beige {
  background: var(--c-beige);
  border: none;
  box-shadow: none;
}
.sciences-ref--beige { border-top-color: var(--c-beige-border-alt); }

.sciences-notes {
  background: var(--c-dark);
  border-radius: var(--radius-card);
  padding: 40px 42px;
}
.sciences-notes-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-notes-eyebrow);
  margin-bottom: 18px;
}
.sciences-notes-titre {
  font-size: 28px;
  line-height: 1.18;
  color: var(--c-white);
  margin-bottom: 24px;
}
.sciences-notes-liste {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.sciences-notes-liste li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.sciences-notes-liste span:not(.sciences-notes-check) {
  font-size: 15px;
  line-height: 1.65;
  color: var(--c-muted-on-dark);
}
.sciences-notes-liste strong { color: var(--c-white); }
.sciences-notes-check {
  flex: none;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--c-mint-15);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

.sciences-cta-carte {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
  background: var(--c-beige);
  border-radius: var(--radius-card);
  padding: 56px 40px;
}
.sciences-cta-carte h2 { font-size: 34px; line-height: 1.14; }
.sciences-cta-carte > p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-text-soft);
  margin-top: 16px;
  max-width: 48ch;
  margin-left: auto;
  margin-right: auto;
}
.sciences-cta-btn { margin-top: 30px; height: 56px; padding: 0 32px; font-size: 16px; }

@media (max-width: 992px) {
  .sciences-hero { padding: 130px 0 80px; }
  .sciences-hero-card { padding: 38px 40px; }
  .sciences-hero-inner h1 { font-size: 42px; }
  .sciences-cartes-grid2 { gap: 14px; }
  .sciences-notes { padding: 36px 32px; }
  .sciences-cta-carte { padding: 48px 32px; }
}

@media (max-width: 768px) {
  .sciences-hero { padding: 110px 0 64px; }
  .sciences-hero-card { padding: 28px 22px; }
  .sciences-hero-inner h1 { font-size: 36px; }
  .sciences-cartes-grid2 { grid-template-columns: 1fr; }
  .sciences-notes { padding: 32px 24px; }
  .sciences-cta-carte { padding: 40px 24px; }
  .sciences-carte { flex-direction: column; }
  .sciences-carte-logo { width: 100%; height: 72px; }
}