:root {
  --color-primary: #373187;
  --color-primary-dark: #2a2668;
  --color-accent: #80ba53;
  --color-accent-dark: #6ba041;
  --color-ink: #1f2430;
  --color-muted: #64697a;
  --color-border: #e7e8f0;
  --color-bg: #ffffff;
  --color-bg-alt: #f7f7fb;
  --radius-lg: 20px;
  --radius-md: 12px;
  --shadow: 0 20px 50px -20px rgba(55, 49, 135, 0.25);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  line-height: 1.6;
}

a { color: inherit; }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  margin: 0 0 10px;
}

.center { text-align: center; }

h1, h2, h3 {
  color: var(--color-primary);
  line-height: 1.2;
  margin: 0 0 16px;
}

h1 { font-size: clamp(2rem, 4vw, 2.9rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.15rem; margin-bottom: 8px; }

.section-lead {
  color: var(--color-muted);
  max-width: 640px;
  font-size: 1.05rem;
}
.section-lead.center { margin-left: auto; margin-right: auto; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  background: #fff;
  padding: 8px 16px;
  border-radius: 10px;
  display: block;
}

.brand img {
  height: 52px;
  display: block;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-weight: 600;
  font-size: 0.95rem;
}

.main-nav a {
  text-decoration: none;
  color: var(--color-ink);
}

.main-nav a:hover { color: var(--color-primary); }

.nav-cta {
  background: var(--color-accent);
  color: #fff !important;
  padding: 10px 18px;
  border-radius: 999px;
}
.nav-cta:hover { background: var(--color-accent-dark); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}

/* Hero */
.hero {
  background: linear-gradient(180deg, var(--color-bg-alt), #fff);
  padding: 72px 24px 40px;
}

.hero-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-lead {
  color: var(--color-muted);
  font-size: 1.1rem;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.hero-art svg { width: 100%; height: auto; }

.btn-primary {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  padding: 15px 28px;
  border-radius: 999px;
  box-shadow: var(--shadow);
}
.btn-primary:hover { background: var(--color-accent-dark); }

.btn-large { padding: 18px 36px; font-size: 1.05rem; }

.btn-secondary {
  display: inline-block;
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 700;
  padding: 15px 24px;
  border-radius: 999px;
  border: 2px solid var(--color-border);
}
.btn-secondary:hover { border-color: var(--color-primary); }

/* Sections */
.section { padding: 88px 24px; }
.section-inner { max-width: 1120px; margin: 0 auto; }
.section:nth-of-type(even) { background: var(--color-bg-alt); }

.cards-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.benefit-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.benefit-card-accent {
  background: var(--color-primary);
  border-color: var(--color-primary);
}
.benefit-card-accent h3, .benefit-card-accent p { color: #fff; }
.benefit-card-accent p { opacity: 0.85; }

.benefit-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(55, 49, 135, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.benefit-card-accent .benefit-icon { background: rgba(255,255,255,0.15); }
.benefit-icon svg { width: 24px; height: 24px; }

.benefit-card p { color: var(--color-muted); margin: 0; }

/* Adhérer / steps */
.adherer-section { text-align: center; }

.steps {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  text-align: left;
}

.step-number {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.step p { color: var(--color-muted); margin: 0; }

.adherer-cta { margin-top: 48px; }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: start;
}

.contact-email {
  display: inline-block;
  margin-top: 16px;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}
.contact-email:hover { text-decoration: underline; }

.contact-note {
  color: var(--color-muted);
  font-size: 0.92rem;
  margin-top: 24px;
}

.contact-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.contact-card h3 { margin-bottom: 12px; }
.contact-card p { color: var(--color-muted); margin: 0 0 8px; }

/* Footer */
.site-footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.85);
  padding: 32px 24px;
}
.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  text-align: center;
  font-size: 0.9rem;
}
.site-footer a { color: #fff; text-decoration: underline; }

/* Responsive */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-art { order: -1; max-width: 280px; margin: 0 auto; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 18px;
    display: none;
  }
  .main-nav.open { display: flex; }
  .nav-cta { align-self: flex-start; }
  .nav-toggle { display: flex; }
  .cards-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 20px; }
  .hero { padding: 48px 20px 32px; }
}