:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6f9;
  --color-hero-start: #101a2e;
  --color-hero-end: #0f2942;
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-accent: #38bdf8;
  --color-text: #101828;
  --color-text-muted: #475467;
  --color-text-inverse: #f2f5fa;
  --color-border: #e4e7ec;
  --radius: 12px;
  --font: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.55;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--color-primary); }
h1, h2, h3 { line-height: 1.2; font-weight: 800; margin: 0 0 0.6em; }
h1 { font-size: clamp(1.9rem, 4vw, 2.8rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); text-align: center; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(16, 26, 46, 0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--color-text-inverse); font-weight: 700; }
.brand-mark { width: 32px; height: 32px; border-radius: 8px; background: var(--color-primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; }
.brand-sep { color: var(--color-accent); font-weight: 400; }
.main-nav { display: none; align-items: center; gap: 24px; }
.main-nav a { color: var(--color-text-inverse); text-decoration: none; font-weight: 600; font-size: 0.95rem; }
.main-nav a:hover { color: var(--color-accent); }
.nav-toggle { display: flex; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 22px; height: 2px; background: #fff; display: block; }

@media (min-width: 900px) {
  .main-nav { display: flex; }
  .nav-toggle { display: none; }
}
.main-nav.open { display: flex; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; background: #101a2e; padding: 16px 20px 24px; gap: 16px; border-bottom: 1px solid rgba(255,255,255,0.08); }

/* Buttons */
.btn { display: inline-block; padding: 13px 24px; border-radius: 999px; font-weight: 700; text-decoration: none; text-align: center; border: 2px solid transparent; cursor: pointer; font-size: 1rem; font-family: inherit; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-ghost { border-color: rgba(255,255,255,0.35); color: var(--color-text-inverse); }
.btn-ghost:hover { border-color: var(--color-accent); color: var(--color-accent); }
.btn-small { padding: 9px 18px; font-size: 0.9rem; }
.btn-block { width: 100%; }

/* Hero */
.hero { background: linear-gradient(135deg, var(--color-hero-start), var(--color-hero-end)); color: var(--color-text-inverse); padding: 64px 0; }
.hero-inner { display: grid; gap: 40px; align-items: center; }
.eyebrow { color: var(--color-accent); font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.85rem; margin-bottom: 12px; }
.hero-lead { color: #cbd5e1; font-size: 1.05rem; max-width: 46ch; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin: 24px 0 18px; }
.hero-trust { font-size: 0.9rem; color: #94a3b8; }
.src { color: #64748b; font-size: 0.85em; }
@media (min-width: 900px) {
  .hero-inner { grid-template-columns: 1.1fr 0.9fr; }
}
.hero-art {
  background: linear-gradient(160deg, rgba(37,99,235,0.18), rgba(255,255,255,0.03));
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 16px;
  padding: 16px;
}
.hero-art img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 20px 45px rgba(0,0,0,0.35);
}

/* Sections */
.section { padding: 72px 0; }
.section-alt { background: var(--color-bg-alt); }
.section-dark { background: var(--color-hero-start); color: var(--color-text-inverse); }
.section-dark h2 { color: #fff; }
.section-lead { text-align: center; color: var(--color-text-muted); max-width: 60ch; margin: -0.4em auto 2.2em; }

.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
@media (min-width: 700px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

.card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 26px; }
.card-icon { width: 40px; height: 40px; border-radius: 10px; background: var(--color-bg-alt); display: flex; align-items: center; justify-content: center; font-size: 1.1rem; margin-bottom: 14px; }
.card p { color: var(--color-text-muted); margin-bottom: 0; }
.card-product h3 { color: var(--color-primary-dark); }

/* Pourquoi IR&L */
.irl-inner { display: grid; gap: 32px; }
.check-list { list-style: none; padding: 0; margin: 0 0 24px; }
.check-list li { padding-left: 28px; position: relative; margin-bottom: 14px; color: var(--color-text-muted); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--color-primary); font-weight: 800; }
.stat-panel { background: var(--color-hero-start); color: var(--color-text-inverse); border-radius: var(--radius); padding: 28px; display: flex; flex-direction: column; gap: 22px; }
.stat-value { display: block; font-size: 2rem; font-weight: 800; color: var(--color-accent); }
.stat-label { font-size: 0.9rem; color: #cbd5e1; }
@media (min-width: 900px) {
  .irl-inner { grid-template-columns: 1.2fr 0.8fr; }
}

/* Pricing */
.pricing-box { max-width: 640px; margin: 0 auto; text-align: center; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 32px; }

/* FAQ */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-list details { border-bottom: 1px solid var(--color-border); padding: 16px 0; }
.faq-list summary { font-weight: 700; cursor: pointer; }
.faq-list p { color: var(--color-text-muted); margin: 10px 0 0; }

/* Contact / form */
.contact-inner { display: grid; gap: 36px; }
.contact-copy p { color: #cbd5e1; max-width: 42ch; }
.lead-form { background: #fff; color: var(--color-text); border-radius: var(--radius); padding: 26px; display: flex; flex-direction: column; gap: 16px; }
.form-row { display: flex; flex-direction: column; gap: 6px; }
.form-row-2 { display: grid; gap: 16px; }
@media (min-width: 600px) {
  .form-row-2 { grid-template-columns: 1fr 1fr; }
}
label { font-size: 0.88rem; font-weight: 700; color: var(--color-text); }
input, select, textarea {
  font-family: inherit; font-size: 1rem; padding: 11px 12px; border: 1px solid var(--color-border); border-radius: 8px; background: #fff; color: var(--color-text);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--color-primary); outline-offset: 1px; }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-consent { flex-direction: row; }
.checkbox-label { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; font-size: 0.88rem; color: var(--color-text-muted); }
.checkbox-label input { width: 18px; height: 18px; flex: none; margin-top: 2px; }
.form-feedback { min-height: 1.2em; font-weight: 700; }
.form-feedback.success { color: #16a34a; }
.form-feedback.error { color: #dc2626; }
@media (min-width: 900px) {
  .contact-inner { grid-template-columns: 0.8fr 1.2fr; }
}

/* Footer */
.site-footer { background: #0b1220; color: #94a3b8; padding: 44px 0 30px; font-size: 0.9rem; }
.footer-inner { display: grid; gap: 24px; }
.footer-inner a { color: #cbd5e1; }
.footer-legal { grid-column: 1 / -1; border-top: 1px solid rgba(255,255,255,0.08); padding-top: 18px; margin-top: 6px; font-size: 0.82rem; }
@media (min-width: 700px) {
  .footer-inner { grid-template-columns: repeat(3, 1fr); }
}