:root {
  --navy: #0f2a4a;
  --navy-2: #173a63;
  --accent: #1fa38a;
  --accent-dark: #178571;
  --text: #1d2733;
  --muted: #5b6878;
  --bg: #ffffff;
  --bg-alt: #f3f6fa;
  --border: #dde4ec;
  --radius: 12px;
  --shadow: 0 8px 24px rgba(15, 42, 74, .08);
  --font: "Inter", system-ui, sans-serif;
  --font-title: "Manrope", "Inter", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.6; }
img { max-width: 100%; }
a { color: var(--accent-dark); }
h1, h2, h3, h4 { font-family: var(--font-title); color: var(--navy); line-height: 1.2; margin: 0 0 .6em; }
h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h4 { font-size: 1.1rem; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 820px; }

/* Boutons */
.btn { display: inline-block; padding: .85em 1.5em; border-radius: 999px; font-weight: 600; text-decoration: none; border: 2px solid transparent; cursor: pointer; font: inherit; font-weight: 600; transition: background .2s, color .2s, border-color .2s; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost { border-color: rgba(255,255,255,.5); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.1); }
.btn-sm { padding: .55em 1.1em; font-size: .92rem; }

/* En-tête */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.96); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.logo { display: flex; align-items: center; gap: .5em; text-decoration: none; }
.logo-mark { background: var(--navy); color: #fff; font-family: var(--font-title); font-weight: 800; padding: .25em .55em; border-radius: 8px; letter-spacing: .05em; }
.logo-text { font-family: var(--font-title); font-weight: 700; color: var(--navy); }
.logo-light .logo-mark { background: var(--accent); }
.logo-light .logo-text { color: #fff; }
.nav { display: flex; align-items: center; gap: 1.1rem; }
.nav a:not(.btn) { color: var(--text); text-decoration: none; font-weight: 500; font-size: .9rem; white-space: nowrap; }
.nav a:not(.btn):hover { color: var(--accent-dark); }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--navy); margin: 5px 0; transition: transform .2s, opacity .2s; }

/* Hero */
.hero { background: linear-gradient(135deg, var(--navy) 0%, var(--navy-2) 100%); color: #fff; padding: 80px 0 90px; }
.hero h1 { color: #fff; }
.hero-inner { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: center; }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .8rem; font-weight: 600; color: var(--accent); margin-bottom: .8em; }
.lead { font-size: 1.12rem; color: #d6e0ec; max-width: 60ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0; }
.hero-badges { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 10px 22px; color: #c3d1e2; font-size: .92rem; }
.hero-badges li::before { content: "✓"; color: var(--accent); font-weight: 700; margin-right: .45em; }
.hero-card { background: #fff; color: var(--text); border-radius: 16px; padding: 28px; box-shadow: 0 20px 50px rgba(0,0,0,.25); }
.hero-card-title { font-family: var(--font-title); font-weight: 700; color: var(--navy); }
.hero-steps { list-style: none; padding: 0; margin: 0; }
.hero-steps li { display: flex; align-items: center; gap: 14px; padding: 11px 0; border-bottom: 1px dashed var(--border); font-weight: 500; }
.hero-steps li:last-child { border-bottom: 0; color: var(--accent-dark); font-weight: 700; }
.hero-steps span { flex: none; width: 30px; height: 30px; border-radius: 50%; background: var(--bg-alt); color: var(--navy); display: grid; place-items: center; font-weight: 700; font-size: .9rem; }
.hero-steps li:last-child span { background: var(--accent); color: #fff; }

/* Sections */
.section { padding: 84px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--navy); color: #d6e0ec; }
.section-dark h2, .section-dark h4 { color: #fff; }
.section-head { max-width: 720px; margin-bottom: 40px; }
.section-head p:last-child { color: var(--muted); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }

.values { display: grid; gap: 16px; }
.value { background: var(--bg-alt); border-left: 4px solid var(--accent); border-radius: var(--radius); padding: 20px 22px; }
.value h3 { font-size: 1.1rem; margin-bottom: .3em; }
.value p { margin: 0; color: var(--muted); }

.group-title { font-size: 1.2rem; margin: 40px 0 16px; }
.group-title:first-of-type { margin-top: 0; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.cards-4 { grid-template-columns: repeat(4, 1fr); }
.stack { display: grid; gap: 28px; }
.sub-title { font-size: 1.1rem; margin-bottom: 12px; }
.cards-compact { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; transition: transform .2s, box-shadow .2s; }
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }
.cards-compact .card { padding: 18px 20px; }
.cards-compact h4 { margin-bottom: .25em; }
.tag { display: inline-block; font-size: .75rem; font-weight: 600; color: var(--accent-dark); background: #e3f5f1; padding: .2em .7em; border-radius: 999px; margin-bottom: .8em; }

.list-check { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.list-check li { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 18px 14px 46px; position: relative; }
.section-alt .list-check li { background: #fff; }
.list-check li::before { content: "✓"; position: absolute; left: 16px; top: 13px; width: 20px; height: 20px; border-radius: 50%; background: var(--accent); color: #fff; font-size: .75rem; display: grid; place-items: center; font-weight: 700; }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.steps li { border-top: 3px solid var(--accent); padding-top: 20px; }
.step-num { font-family: var(--font-title); font-weight: 800; font-size: 2rem; color: var(--accent); display: block; margin-bottom: .3em; }
.steps p { margin: 0; }

/* FAQ */
details { border-bottom: 1px solid var(--border); padding: 18px 0; }
summary { cursor: pointer; font-weight: 600; color: var(--navy); list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-size: 1.4rem; line-height: 1; color: var(--accent); }
details[open] summary::after { content: "–"; }
details p { margin: 12px 0 0; color: var(--muted); }

/* Contact */
.contact-list { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 14px; }
.contact-list li { display: flex; flex-direction: column; }
.contact-list strong { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.contact-list a, .contact-list span { font-size: 1.1rem; font-weight: 600; color: var(--navy); text-decoration: none; }
.contact-form { background: #fff; border-radius: 16px; padding: 28px; box-shadow: var(--shadow); display: grid; gap: 16px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form label { display: grid; gap: 6px; font-weight: 500; font-size: .92rem; }
.contact-form input, .contact-form select, .contact-form textarea { font: inherit; padding: .7em .85em; border: 1px solid var(--border); border-radius: 8px; background: #fff; color: var(--text); width: 100%; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.contact-form .btn { justify-self: start; }
.form-note { margin: 0; font-size: .92rem; color: var(--accent-dark); }

/* Pied de page */
.site-footer { background: #0a1e36; color: #a9b8ca; padding: 48px 0 28px; }
.footer-inner { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: start; }
.footer-inner p { margin: .8em 0 0; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 20px; }
.footer-nav a, .footer-legal a { color: #d6e0ec; text-decoration: none; }
.footer-nav a:hover, .footer-legal a:hover { color: #fff; }
.footer-legal { grid-column: 1 / -1; border-top: 1px solid rgba(255,255,255,.1); padding-top: 20px; font-size: .88rem; }

/* Page mentions légales */
.legal { padding: 60px 0 80px; }
.legal h2 { font-size: 1.3rem; margin-top: 1.8em; }

/* Responsive */
@media (max-width: 960px) {
  .hero-inner, .two-col { grid-template-columns: 1fr; gap: 36px; }
  .cards, .cards-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 1100px) {
  .nav-toggle { display: block; }
  .nav { position: absolute; top: 70px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; gap: 0; padding: 8px 16px 20px; border-bottom: 1px solid var(--border); display: none; }
  .nav.open { display: flex; }
  .nav a:not(.btn) { padding: 12px 0; border-bottom: 1px solid var(--border); }
  .nav .btn { margin-top: 14px; text-align: center; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}
@media (max-width: 600px) {
  .section { padding: 60px 0; }
  .hero { padding: 56px 0 64px; }
  .cards, .cards-4, .steps, .field-row, .footer-inner { grid-template-columns: 1fr; }
}

/* Bloc mis en avant (ISO/IEC 17020) */
.feature { margin-top: 28px; background: #fff; border: 1px solid var(--border); border-left: 5px solid var(--accent); border-radius: var(--radius); padding: 32px; display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: start; box-shadow: var(--shadow); }
.feature h3 { font-size: 1.35rem; }
.feature p { color: var(--muted); margin: 0; }
.feature .list-check li { background: var(--bg-alt); }
@media (max-width: 960px) { .feature { grid-template-columns: 1fr; gap: 24px; padding: 24px; } }

/* Lien de menu mis en avant (ISO 17020) */
.nav a.nav-highlight { color: var(--accent-dark); font-weight: 700; }
.nav a[aria-current="page"] { text-decoration: underline; text-underline-offset: 6px; text-decoration-thickness: 2px; }

/* Liste sur fond sombre */
.list-dark li { background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.14); color: #e6edf5; }
.section-dark strong { color: #fff; }

/* Valeurs sur 3 colonnes */
.values-3 { grid-template-columns: repeat(3, 1fr); }
.values-3 .value { background: var(--bg-alt); }

/* Bandeau d'appel à l'action */
.cta-band { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; background: var(--bg-alt); border-radius: 16px; padding: 36px; }
.cta-band h2 { font-size: 1.5rem; margin-bottom: .3em; }
.cta-band p { margin: 0; color: var(--muted); }
.feature-link { margin-top: 20px; }
@media (max-width: 960px) { .values-3 { grid-template-columns: 1fr; } }

/* Cartes de qualification par fonction */
.mini-list { margin: 0; padding-left: 1.1em; color: var(--muted); font-size: .94rem; display: grid; gap: 6px; }
.mini-list li::marker { color: var(--accent); }