:root {
  --violet: #9D1BBD;
  --rouge: #D11717;
  --bleu: #1625D4;
  --gris-fond: #F5F6F8;
  --gris-texte: #2B2D3A;
  --gris-clair: #6B6E7C;
  --blanc: #FFFFFF;
  --max-width: 1180px;
  --radius: 12px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--gris-texte);
  background: var(--blanc);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--bleu); text-decoration: none; }
a:hover { text-decoration: underline; }

img, svg { max-width: 100%; height: auto; display: block; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  background: var(--blanc);
  border-bottom: 1px solid #ECECF1;
  padding: 18px 0;
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.site-logo img { height: 56px; width: auto; }
.site-nav { display: flex; gap: 28px; }
.site-nav a {
  color: var(--gris-texte);
  font-weight: 600;
  font-size: 15px;
}
.site-nav a:hover { color: var(--rouge); text-decoration: none; }
.site-nav .cta {
  background: var(--rouge);
  color: var(--blanc);
  padding: 10px 20px;
  border-radius: var(--radius);
}
.site-nav .cta:hover { background: #B11212; color: var(--blanc); }

/* Hero */
.hero {
  padding: 80px 0 64px;
  background: linear-gradient(180deg, var(--gris-fond) 0%, var(--blanc) 100%);
}
.hero h1 {
  font-size: clamp(34px, 5vw, 54px);
  font-weight: 900;
  line-height: 1.15;
  color: var(--rouge);
  max-width: 920px;
}
.hero .lead {
  margin-top: 22px;
  font-size: 20px;
  color: var(--gris-clair);
  max-width: 820px;
}
.hero .actions { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-size: 16px;
  border: 2px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--rouge); color: var(--blanc); }
.btn-primary:hover { background: #B11212; text-decoration: none; }
.btn-outline { background: transparent; color: var(--bleu); border-color: var(--bleu); }
.btn-outline:hover { background: var(--bleu); color: var(--blanc); text-decoration: none; }

/* Sections génériques */
section { padding: 72px 0; }
section h2 {
  font-size: clamp(28px, 3.8vw, 40px);
  font-weight: 900;
  color: var(--bleu);
  margin-bottom: 18px;
}
section .intro {
  font-size: 18px;
  color: var(--gris-clair);
  max-width: 820px;
  margin-bottom: 40px;
}

/* Services grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.service-card {
  background: var(--blanc);
  border: 1px solid #E6E7EE;
  border-radius: var(--radius);
  padding: 28px;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(22,37,212,.08);
  border-color: var(--violet);
}
.service-card .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(157,27,189,.10);
  color: var(--violet);
  display: grid;
  place-items: center;
  font-weight: 900;
  font-size: 20px;
  margin-bottom: 16px;
}
.service-card h3 { font-size: 19px; font-weight: 800; color: var(--gris-texte); margin-bottom: 8px; }
.service-card p { color: var(--gris-clair); font-size: 15.5px; }

/* Approach / Why */
.alt { background: var(--gris-fond); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.two-col h2 { margin-bottom: 16px; }
.two-col p { color: var(--gris-clair); margin-bottom: 14px; }
@media (max-width: 800px) { .two-col { grid-template-columns: 1fr; gap: 32px; } }

.points { list-style: none; margin-top: 12px; }
.points li {
  padding: 10px 0 10px 32px;
  position: relative;
  color: var(--gris-texte);
}
.points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 18px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--rouge);
}

/* CTA band */
.cta-band {
  background: linear-gradient(135deg, var(--bleu) 0%, var(--violet) 100%);
  color: var(--blanc);
  text-align: center;
  padding: 72px 24px;
  border-radius: var(--radius);
  margin: 24px 0;
}
.cta-band h2 { color: var(--blanc); }
.cta-band p { font-size: 18px; opacity: .92; margin: 14px 0 28px; }
.cta-band .btn-primary { background: var(--blanc); color: var(--bleu); }
.cta-band .btn-primary:hover { background: #F0F1F8; }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
@media (max-width: 800px) { .contact-grid { grid-template-columns: 1fr; gap: 32px; } }
.contact-card {
  background: var(--gris-fond);
  border-radius: var(--radius);
  padding: 28px;
}
.contact-card h3 { color: var(--bleu); font-size: 18px; margin-bottom: 12px; }
.contact-card p, .contact-card address { color: var(--gris-texte); font-style: normal; line-height: 1.7; }

form .field { margin-bottom: 18px; }
form label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--gris-texte);
  margin-bottom: 6px;
}
form input, form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid #D6D8E1;
  border-radius: 10px;
  font-family: inherit;
  font-size: 16px;
  background: var(--blanc);
}
form input:focus, form textarea:focus {
  outline: none;
  border-color: var(--bleu);
  box-shadow: 0 0 0 4px rgba(22,37,212,.1);
}
form textarea { min-height: 140px; resize: vertical; }
.form-msg { padding: 14px; border-radius: 10px; margin-bottom: 18px; font-weight: 600; }
.form-msg.ok { background: #E6F7EE; color: #1F7A47; }
.form-msg.err { background: #FCEBEC; color: #B11212; }

/* Footer */
.site-footer {
  background: #1A1B2E;
  color: #C8CAD8;
  padding: 56px 0 24px;
  margin-top: 80px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h4 { color: var(--blanc); font-size: 15px; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 14px; }
.site-footer a { color: #C8CAD8; }
.site-footer a:hover { color: var(--blanc); }
.site-footer address { font-style: normal; line-height: 1.7; }
.site-footer .legal {
  border-top: 1px solid #2D2F47;
  padding-top: 20px;
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: #8A8DA1;
}

/* Legal pages */
.legal-content { max-width: 820px; }
.legal-content h2 { margin-top: 36px; font-size: 22px; }
.legal-content p, .legal-content li { margin-bottom: 12px; color: var(--gris-texte); }
.legal-content ul { padding-left: 22px; }