/* ============================================================
   VARIABLES & RESET
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --bleu-profond:   #0f1f3d;
  --bleu-moyen:     #1e3a6e;
  --bleu-accent:    #2563eb;
  --bleu-clair:     #dbeafe;
  --blanc:          #ffffff;
  --gris-100:       #f8fafc;
  --gris-200:       #f1f5f9;
  --gris-300:       #e2e8f0;
  --gris-500:       #64748b;
  --gris-700:       #334155;
  --gris-900:       #0f172a;
  --vert-succes:    #059669;

  --rayon-sm:  6px;
  --rayon-md:  12px;
  --rayon-lg:  20px;
  --ombre-sm:  0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --ombre-md:  0 4px 16px rgba(15,31,61,.10);
  --ombre-lg:  0 8px 32px rgba(15,31,61,.14);

  --transition: .22s ease;
  --max-w: 1120px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--gris-700);
  background: var(--blanc);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ============================================================
   UTILITAIRES
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.section-pad { padding-block: 5rem; }
.section-pad-sm { padding-block: 3.5rem; }

/* Fond alterné très léger */
.bg-tint { background: var(--gris-100); }
.bg-dark  { background: var(--bleu-profond); color: var(--blanc); }
.bg-accent{ background: var(--bleu-accent);  color: var(--blanc); }

/* Titres de section */
.section-label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--bleu-accent);
  margin-bottom: .75rem;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 800;
  color: var(--bleu-profond);
  line-height: 1.2;
  margin-bottom: 1rem;
}
.bg-dark  .section-title,
.bg-accent .section-title { color: var(--blanc); }
.bg-dark  .section-label  { color: var(--bleu-clair); }

.section-sub {
  font-size: 1.05rem;
  color: var(--gris-500);
  max-width: 600px;
}
.bg-dark  .section-sub,
.bg-accent .section-sub { color: rgba(255,255,255,.78); }

.text-center { text-align: center; }
.text-center .section-sub { margin-inline: auto; }

/* ============================================================
   BOUTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .75rem 1.6rem;
  border-radius: var(--rayon-sm);
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), transform var(--transition),
              box-shadow var(--transition);
  text-decoration: none;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--bleu-accent);
  color: var(--blanc);
}
.btn-primary:hover {
  background: #1d4ed8;
  box-shadow: 0 4px 14px rgba(37,99,235,.4);
}

.btn-outline {
  background: transparent;
  color: var(--bleu-accent);
  border-color: var(--bleu-accent);
}
.btn-outline:hover {
  background: var(--bleu-accent);
  color: var(--blanc);
}

.btn-white {
  background: var(--blanc);
  color: var(--bleu-accent);
}
.btn-white:hover {
  background: var(--bleu-clair);
  box-shadow: var(--ombre-md);
}

.btn-ghost {
  background: rgba(255,255,255,.12);
  color: var(--blanc);
  border-color: rgba(255,255,255,.3);
}
.btn-ghost:hover {
  background: rgba(255,255,255,.22);
}

.btn-lg { padding: .9rem 2rem; font-size: 1rem; }
.btn-sm { padding: .5rem 1.1rem; font-size: .85rem; }

/* WhatsApp */
.btn-whatsapp {
  background: #25d366;
  color: var(--blanc);
}
.btn-whatsapp:hover { background: #1ebe5a; }

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gris-300);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: var(--ombre-md); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-size: 1rem;
  font-weight: 800;
  color: var(--bleu-profond);
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-shrink: 0;
}
.nav-logo span { color: var(--bleu-accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--gris-700);
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 2px;
  background: var(--bleu-accent);
  border-radius: 2px;
  transition: width var(--transition);
}
.nav-links a:hover,
.nav-links a.active { color: var(--bleu-accent); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.nav-cta { margin-left: 1rem; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: .4rem;
  border: none;
  background: transparent;
  border-radius: var(--rayon-sm);
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--bleu-profond);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 0;
  padding: .5rem 0 1rem;
  border-top: 1px solid var(--gris-300);
  background: var(--blanc);
}
.nav-mobile a {
  padding: .75rem 1.25rem;
  font-size: .95rem;
  font-weight: 500;
  color: var(--gris-700);
  transition: background var(--transition), color var(--transition);
  border-radius: var(--rayon-sm);
  margin-inline: .5rem;
}
.nav-mobile a:hover { background: var(--gris-200); color: var(--bleu-accent); }
.nav-mobile a.active { color: var(--bleu-accent); font-weight: 600; }
.nav-mobile .btn { margin: .5rem 1rem 0; }
.nav-mobile.open { display: flex; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding-top: calc(64px + 4rem);
  padding-bottom: 5rem;
  background: linear-gradient(135deg, var(--bleu-profond) 0%, var(--bleu-moyen) 60%, #1a4080 100%);
  color: var(--blanc);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -40%; right: -20%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(37,99,235,.25) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -30%; left: -10%;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(96,165,250,.15) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 100px;
  padding: .35rem 1rem;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--bleu-clair);
  margin-bottom: 1.5rem;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.13;
  margin-bottom: 1.25rem;
  color: var(--blanc);
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, #60a5fa, #93c5fd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,.8);
  max-width: 580px;
  margin-bottom: 2.25rem;
  line-height: 1.7;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; }

/* Page hero (intérieur) */
.page-hero {
  padding-top: calc(64px + 3rem);
  padding-bottom: 3.5rem;
  background: linear-gradient(135deg, var(--bleu-profond) 0%, var(--bleu-moyen) 100%);
  color: var(--blanc);
}
.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  font-weight: 800;
  color: var(--blanc);
  line-height: 1.2;
  margin-bottom: 1rem;
}
.page-hero p {
  font-size: 1.05rem;
  color: rgba(255,255,255,.78);
  max-width: 620px;
}

/* ============================================================
   PROBLÈMES
   ============================================================ */
.problemes-list {
  display: flex;
  flex-direction: column;
  gap: .75rem;
  margin-block: 1.5rem;
}
.probleme-item {
  display: flex;
  align-items: flex-start;
  gap: .85rem;
  padding: 1rem 1.25rem;
  background: var(--blanc);
  border: 1px solid var(--gris-300);
  border-left: 4px solid #f87171;
  border-radius: var(--rayon-sm);
  box-shadow: var(--ombre-sm);
}
.probleme-icon { font-size: 1.1rem; flex-shrink: 0; margin-top: .1rem; }
.probleme-item p { font-size: .95rem; color: var(--gris-700); }

.conclusion-box {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: 1rem 1.5rem;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--rayon-sm);
  font-weight: 600;
  color: #dc2626;
  margin-top: 1rem;
}

/* ============================================================
   SOLUTION
   ============================================================ */
.solution-card {
  background: var(--blanc);
  border-radius: var(--rayon-lg);
  padding: 2.5rem;
  box-shadow: var(--ombre-md);
  border: 1px solid var(--gris-300);
}
.solution-card p { margin-bottom: 1.25rem; }
.solution-points {
  display: flex;
  flex-direction: column;
  gap: .6rem;
  margin-bottom: 1.5rem;
}
.solution-point {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-weight: 500;
  color: var(--gris-700);
}
.solution-point::before {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--bleu-accent);
  flex-shrink: 0;
}
.solution-conclusion {
  padding: .85rem 1.25rem;
  background: var(--bleu-clair);
  border-radius: var(--rayon-sm);
  font-weight: 600;
  color: var(--bleu-moyen);
}

/* ============================================================
   ÉTAPES
   ============================================================ */
.etapes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}
.etape-card {
  background: var(--blanc);
  border: 1px solid var(--gris-300);
  border-radius: var(--rayon-lg);
  padding: 2rem;
  box-shadow: var(--ombre-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}
.etape-card:hover {
  box-shadow: var(--ombre-lg);
  transform: translateY(-3px);
}
.etape-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--bleu-accent);
}
.etape-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  background: var(--bleu-clair);
  color: var(--bleu-accent);
  font-weight: 800;
  font-size: 1.1rem;
  border-radius: 50%;
  margin-bottom: 1rem;
}
.etape-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--bleu-profond);
  margin-bottom: .5rem;
}
.etape-card p { font-size: .92rem; color: var(--gris-500); }

/* Étapes détaillées (page accompagnement) */
.etape-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
.etape-detail-card {
  background: var(--blanc);
  border: 1px solid var(--gris-300);
  border-radius: var(--rayon-lg);
  padding: 2.25rem;
  box-shadow: var(--ombre-sm);
  display: grid;
  gap: 1rem;
}
.etape-header {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.etape-header .num-badge {
  width: 50px; height: 50px;
  background: var(--bleu-accent);
  color: var(--blanc);
  font-weight: 800;
  font-size: 1.2rem;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  flex-shrink: 0;
}
.etape-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--bleu-profond);
}
.etape-sous-points {
  display: flex;
  flex-direction: column;
  gap: .55rem;
  padding-left: .5rem;
}
.etape-sous-points li {
  display: flex;
  align-items: flex-start;
  gap: .7rem;
  font-size: .94rem;
  color: var(--gris-700);
}
.etape-sous-points li::before {
  content: '✓';
  color: var(--vert-succes);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: .05rem;
}

/* ============================================================
   CAS D'USAGE
   ============================================================ */
.cas-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: 2.5rem;
}
.cas-pill {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: .75rem 1.35rem;
  background: var(--blanc);
  border: 1px solid var(--gris-300);
  border-radius: 100px;
  font-size: .9rem;
  font-weight: 500;
  color: var(--gris-700);
  box-shadow: var(--ombre-sm);
  transition: box-shadow var(--transition), border-color var(--transition), color var(--transition);
}
.cas-pill:hover {
  border-color: var(--bleu-accent);
  color: var(--bleu-accent);
  box-shadow: var(--ombre-md);
}
.cas-icon { font-size: 1.1rem; }

/* ============================================================
   POUR QUI
   ============================================================ */
.pourqui-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-top: 2.5rem;
}
.pourqui-card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--rayon-md);
  padding: 1.75rem 1.5rem;
  text-align: center;
  transition: background var(--transition), border-color var(--transition);
}
.pourqui-card:hover {
  background: rgba(255,255,255,.14);
  border-color: rgba(255,255,255,.3);
}
.pourqui-icon { font-size: 2.2rem; margin-bottom: .75rem; }
.pourqui-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--blanc);
}

/* ============================================================
   RÉSULTATS
   ============================================================ */
.resultats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-top: 2.5rem;
}
.resultat-card {
  background: var(--blanc);
  border: 1px solid var(--gris-300);
  border-radius: var(--rayon-md);
  padding: 1.5rem;
  box-shadow: var(--ombre-sm);
  display: flex;
  align-items: flex-start;
  gap: .85rem;
  transition: box-shadow var(--transition);
}
.resultat-card:hover { box-shadow: var(--ombre-md); }
.resultat-icon { font-size: 1.5rem; flex-shrink: 0; }
.resultat-card p { font-size: .9rem; font-weight: 500; color: var(--gris-700); }

/* ============================================================
   CRÉDIBILITÉ
   ============================================================ */
.credibilite-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.credibilite-text p { margin-bottom: 1rem; line-height: 1.8; }
.credibilite-quote {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--bleu-accent);
  font-style: italic;
  border-left: 3px solid var(--bleu-accent);
  padding-left: 1rem;
  margin-top: 1rem;
}
.credibilite-visuel {
  background: var(--bleu-clair);
  border-radius: var(--rayon-lg);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.cred-stat {
  background: var(--blanc);
  border-radius: var(--rayon-sm);
  padding: 1rem 1.25rem;
  box-shadow: var(--ombre-sm);
}
.cred-stat .num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--bleu-accent);
}
.cred-stat .label {
  font-size: .8rem;
  color: var(--gris-500);
  font-weight: 500;
}

/* ============================================================
   OFFRE D'ENTRÉE
   ============================================================ */
.offre-box {
  background: linear-gradient(135deg, var(--bleu-profond), var(--bleu-moyen));
  border-radius: var(--rayon-lg);
  padding: 3rem 2.5rem;
  color: var(--blanc);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
}
.offre-box h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: .75rem;
  color: var(--blanc);
}
.offre-box p { color: rgba(255,255,255,.8); margin-bottom: .5rem; }
.offre-note {
  font-size: .85rem;
  color: rgba(255,255,255,.6);
  font-style: italic;
}

/* ============================================================
   CTA FINAL
   ============================================================ */
.cta-section {
  text-align: center;
  padding-block: 5rem;
  background: var(--bleu-accent);
  color: var(--blanc);
}
.cta-section h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--blanc);
}
.cta-section p {
  font-size: 1.05rem;
  color: rgba(255,255,255,.82);
  max-width: 540px;
  margin-inline: auto;
  margin-bottom: 2rem;
}

/* ============================================================
   OBJECTIF TRANSITION (accompagnement)
   ============================================================ */
.objectif-transition {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}
.obj-box {
  padding: 1.25rem 2rem;
  border-radius: var(--rayon-sm);
  text-align: center;
  font-weight: 700;
  font-size: 1rem;
}
.obj-box.from {
  background: #fef2f2;
  color: #dc2626;
  border: 1px solid #fecaca;
}
.obj-box.to {
  background: #f0fdf4;
  color: #16a34a;
  border: 1px solid #bbf7d0;
}
.obj-arrow { font-size: 1.5rem; color: var(--gris-500); }

/* ============================================================
   ATELIER — FORMAT
   ============================================================ */
.format-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}
.format-item {
  background: var(--blanc);
  border: 1px solid var(--gris-300);
  border-radius: var(--rayon-md);
  padding: 1.5rem;
  text-align: center;
  box-shadow: var(--ombre-sm);
}
.format-item .fi { font-size: 2rem; margin-bottom: .5rem; }
.format-item p { font-size: .9rem; font-weight: 500; color: var(--gris-700); }

/* ============================================================
   FORMULAIRE DE CONTACT
   ============================================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 3.5rem;
  align-items: start;
}
.contact-info h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--bleu-profond);
  margin-bottom: 1rem;
}
.contact-info p {
  font-size: .92rem;
  color: var(--gris-500);
  margin-bottom: 2rem;
  line-height: 1.75;
}
.contact-options {
  display: flex;
  flex-direction: column;
  gap: .85rem;
}

.form-card {
  background: var(--blanc);
  border: 1px solid var(--gris-300);
  border-radius: var(--rayon-lg);
  padding: 2.25rem;
  box-shadow: var(--ombre-md);
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.25rem;
}
.form-group { display: flex; flex-direction: column; gap: .4rem; }
.form-group.full { grid-column: 1 / -1; }
.form-group label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--gris-700);
}
.form-group input,
.form-group textarea {
  padding: .7rem 1rem;
  border: 1.5px solid var(--gris-300);
  border-radius: var(--rayon-sm);
  font-size: .95rem;
  font-family: inherit;
  color: var(--gris-900);
  background: var(--blanc);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--bleu-accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.form-group input.erreur,
.form-group textarea.erreur { border-color: #ef4444; }
.form-group .msg-erreur {
  font-size: .78rem;
  color: #ef4444;
  font-weight: 500;
}
.form-group textarea { resize: vertical; min-height: 130px; }
.form-submit {
  display: flex;
  justify-content: flex-end;
  margin-top: 1.25rem;
}
.form-success {
  display: none;
  text-align: center;
  padding: 2rem;
  color: var(--vert-succes);
  font-weight: 600;
  font-size: 1.05rem;
}
.form-success .success-icon { font-size: 2.5rem; margin-bottom: .75rem; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--gris-900);
  color: rgba(255,255,255,.65);
  padding-block: 3rem 1.5rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}
.footer-brand .nav-logo {
  color: var(--blanc);
  font-size: 1rem;
  margin-bottom: .75rem;
}
.footer-brand p {
  font-size: .85rem;
  line-height: 1.75;
  max-width: 280px;
}
.footer-col h4 {
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: rgba(255,255,255,.4);
  margin-bottom: .85rem;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.footer-col ul li a {
  font-size: .85rem;
  color: rgba(255,255,255,.6);
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--blanc); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-bottom p { font-size: .8rem; }

/* ============================================================
   ANIMATION AU SCROLL
   ============================================================ */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .55s ease, transform .55s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in-delay-1 { transition-delay: .1s; }
.fade-in-delay-2 { transition-delay: .2s; }
.fade-in-delay-3 { transition-delay: .3s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .credibilite-inner { grid-template-columns: 1fr; }
  .contact-layout    { grid-template-columns: 1fr; gap: 2rem; }
  .footer-inner      { grid-template-columns: 1fr 1fr; }
  .footer-brand      { grid-column: 1 / -1; }
  .offre-box         { grid-template-columns: 1fr; text-align: center; }
}

@media (max-width: 640px) {
  .section-pad       { padding-block: 3.5rem; }
  .nav-links,
  .nav-cta           { display: none; }
  .nav-toggle        { display: flex; }
  .form-grid         { grid-template-columns: 1fr; }
  .footer-inner      { grid-template-columns: 1fr; }
  .etapes-grid       { grid-template-columns: 1fr; }
  .pourqui-grid      { grid-template-columns: 1fr 1fr; }
  .resultats-grid    { grid-template-columns: 1fr; }
  .format-grid       { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 400px) {
  .pourqui-grid { grid-template-columns: 1fr; }
  .format-grid  { grid-template-columns: 1fr; }
}