:root {
  --fond: #0f172a;
  --fond-profond: #0a1020;
  --surface: #1e293b;
  --surface-2: #162033;
  --bordure: #334155;
  --bleu: #38bdf8;
  --bleu-fonce: #0ea5e9;
  --bleu-voile: rgba(56, 189, 248, 0.12);
  --encre: #f1f5f9;
  --texte: #94a3b8;
  --faible: #64748b;
  --vert: #4ade80;
  --ambre: #fbbf24;
  --rouge: #f87171;
  --radius: 14px;
  --radius-sm: 8px;
  --ombre: 0 24px 70px rgba(0, 0, 0, 0.34);
  --max: 1160px;
  --font: "Inter", "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; overflow-x: hidden; color: var(--encre); background: var(--fond); font-family: var(--font); line-height: 1.6; -webkit-font-smoothing: antialiased; }
body, button, a { font-size: 1rem; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
svg { display: block; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -0.025em; }
h1 { max-width: 780px; margin-bottom: 1.5rem; font-size: clamp(2.75rem, 6vw, 5.35rem); font-weight: 720; }
h1 em { color: var(--bleu); font-style: normal; }
h2 { margin-bottom: 1.15rem; font-size: clamp(2rem, 4vw, 3.15rem); }
h3 { font-size: 1.35rem; }
p { color: var(--texte); }
:focus-visible { outline: 2px solid var(--bleu); outline-offset: 4px; border-radius: 4px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.conteneur { width: min(calc(100% - 3rem), var(--max)); margin-inline: auto; }
.section { position: relative; padding: 7rem 0; overflow: hidden; }
.section--surface { background: var(--surface-2); border-block: 1px solid rgba(51,65,85,.65); }

.topbar { position: sticky; top: 0; z-index: 20; border-bottom: 1px solid rgba(51,65,85,.8); background: rgba(15,23,42,.9); backdrop-filter: blur(16px); }
.topbar__inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.marque { display: inline-flex; align-items: center; gap: .7rem; color: var(--encre); font-size: 1.35rem; font-weight: 500; letter-spacing: -.025em; }
.marque strong { color: var(--bleu); }
.marque__logo { width: 34px; height: 34px; padding: 5px; fill: var(--fond); background: var(--bleu); border-radius: 8px; box-shadow: 0 0 24px rgba(56,189,248,.25); }
.nav { display: flex; align-items: center; gap: .35rem; }
.nav__lien { padding: .6rem .85rem; color: var(--texte); border-radius: var(--radius-sm); font-size: .9rem; font-weight: 580; }
.nav__lien:hover, .nav__lien.is-active { color: var(--encre); background: rgba(30,41,59,.85); }
.nav__lien--cta { margin-left: .5rem; color: white; background: var(--bleu-fonce); }
.nav__lien--cta:hover { background: var(--bleu); color: var(--fond); }
.nav-toggle { display: none; width: 42px; height: 42px; padding: 9px; border: 1px solid var(--bordure); border-radius: 8px; background: transparent; }
.nav-toggle span:not(.sr-only) { display: block; height: 2px; margin: 5px 0; background: var(--encre); }

.hero { min-height: calc(100vh - 72px); display: flex; align-items: center; padding-block: 6.5rem; background: radial-gradient(circle at 77% 38%, rgba(14,165,233,.09), transparent 27%), linear-gradient(180deg, var(--fond-profond), var(--fond)); }
.hero__grille { position: relative; z-index: 1; display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 5rem; }
.hero__grille > *, .methode__grille > *, .preuve__carte > * { min-width: 0; }
.eyebrow { display: flex; align-items: center; gap: .65rem; margin-bottom: 1.15rem; color: var(--bleu); font-size: .79rem; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }
.eyebrow span { width: 26px; height: 2px; background: var(--bleu); }
.hero__texte { max-width: 650px; margin-bottom: 2rem; font-size: 1.12rem; }
.hero__actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-bottom: 1.8rem; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .7rem; min-height: 50px; padding: .78rem 1.2rem; border: 1px solid transparent; border-radius: var(--radius-sm); font-weight: 650; transition: .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn--primaire { color: white; background: var(--bleu-fonce); box-shadow: 0 12px 30px rgba(14,165,233,.18); }
.btn--primaire:hover { background: var(--bleu); color: var(--fond); }
.btn--secondaire { border-color: var(--bordure); color: var(--encre); background: rgba(30,41,59,.35); }
.btn--secondaire:hover { border-color: rgba(56,189,248,.55); background: var(--bleu-voile); }
.btn--clair { color: var(--fond); background: var(--encre); white-space: nowrap; }
.hero__preuves { display: flex; flex-wrap: wrap; gap: 1.2rem; margin: 0; padding: 0; list-style: none; color: var(--texte); font-size: .85rem; }
.hero__preuves span { margin-right: .3rem; color: var(--vert); }
.halo { position: absolute; border-radius: 50%; filter: blur(2px); opacity: .42; pointer-events: none; }
.halo--un { right: -200px; top: 70px; width: 500px; height: 500px; border: 1px solid rgba(56,189,248,.18); box-shadow: inset 0 0 100px rgba(56,189,248,.05); }
.halo--deux { left: -250px; bottom: -340px; width: 600px; height: 600px; border: 1px solid rgba(56,189,248,.08); }

.pilotage { position: relative; padding: 1.5rem; border: 1px solid rgba(56,189,248,.28); border-radius: 18px; background: linear-gradient(145deg, rgba(30,41,59,.97), rgba(19,29,47,.97)); box-shadow: var(--ombre); }
.pilotage::before { content: ""; position: absolute; inset: -1px; z-index: -1; border-radius: inherit; box-shadow: 0 0 80px rgba(14,165,233,.12); }
.pilotage__haut { display: flex; justify-content: space-between; gap: 1rem; padding-bottom: 1rem; border-bottom: 1px solid var(--bordure); }
.micro { margin-bottom: .35rem; color: var(--faible); font-size: .7rem; font-weight: 750; letter-spacing: .1em; }
.pilotage h2 { margin: 0; font-size: 1.2rem; }
.statut { align-self: flex-start; display: inline-flex; align-items: center; gap: .45rem; padding: .3rem .6rem; border: 1px solid rgba(74,222,128,.45); border-radius: 999px; color: var(--vert); background: rgba(74,222,128,.1); font-size: .72rem; font-weight: 700; }
.statut i { width: 6px; height: 6px; border-radius: 50%; background: currentColor; box-shadow: 0 0 9px currentColor; }
.prix { padding: 1.4rem 0 1.2rem; }
.prix p { margin-bottom: .15rem; font-size: .8rem; }
.prix strong { display: block; color: var(--encre); font-family: ui-monospace, Consolas, monospace; font-size: 2.25rem; line-height: 1.15; }
.prix small { font-size: .9rem; color: var(--texte); }
.prix span { color: var(--vert); font-size: .75rem; }
.jauge { padding: .9rem 0 1.3rem; }
.jauge__rail { position: relative; height: 8px; overflow: visible; border-radius: 999px; background: linear-gradient(90deg, var(--rouge), var(--ambre) 45%, var(--vert)); }
.jauge__rail span { position: absolute; inset: 0; border-radius: inherit; opacity: .7; }
.jauge__rail i { position: absolute; left: 61%; top: 50%; width: 15px; height: 15px; border: 3px solid var(--surface); border-radius: 50%; background: var(--encre); transform: translate(-50%,-50%); box-shadow: 0 0 0 2px var(--encre); }
.jauge__labels { display: flex; justify-content: space-between; margin-top: .55rem; color: var(--faible); font-size: .65rem; }
.indicateurs { display: grid; grid-template-columns: repeat(3,1fr); gap: .65rem; }
.indicateurs div { padding: .75rem; border: 1px solid var(--bordure); border-radius: 8px; background: rgba(15,23,42,.5); }
.indicateurs span, .indicateurs strong { display: block; }
.indicateurs span { margin-bottom: .3rem; color: var(--faible); font-size: .65rem; }
.indicateurs strong { font-size: .85rem; }
.indicateurs .accent { color: var(--bleu); }
.alerte { display: flex; gap: .7rem; margin-top: 1rem; padding: .85rem; border: 1px solid rgba(56,189,248,.25); border-radius: 8px; background: var(--bleu-voile); }
.alerte > span { flex: none; display: grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; color: var(--fond); background: var(--bleu); font-size: .72rem; font-weight: 800; }
.alerte p { margin: 0; font-size: .7rem; }
.alerte strong { color: var(--encre); }

.bandeau { border-block: 1px solid var(--bordure); background: var(--surface); }
.bandeau__inner { min-height: 74px; display: flex; align-items: center; justify-content: center; gap: 2.4rem; }
.bandeau p { margin: 0; color: var(--texte); font-size: .83rem; font-weight: 650; text-transform: uppercase; letter-spacing: .07em; }
.bandeau i { width: 4px; height: 4px; border-radius: 50%; background: var(--bleu); }

.intro-section { max-width: 730px; margin-bottom: 3.2rem; }
.intro-section > p:last-child { max-width: 650px; }
.cartes-expertise { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.2rem; }
.carte { position: relative; min-height: 360px; padding: 1.8rem; border: 1px solid var(--bordure); border-radius: var(--radius); background: var(--surface); transition: transform .2s, border-color .2s, box-shadow .2s; }
.carte:hover { transform: translateY(-5px); border-color: rgba(56,189,248,.5); box-shadow: 0 20px 50px rgba(0,0,0,.23); }
.carte__numero { position: absolute; top: 1.5rem; right: 1.5rem; color: var(--faible); font: 700 .72rem ui-monospace, monospace; }
.icone { display: grid; place-items: center; width: 48px; height: 48px; margin-bottom: 3.2rem; border: 1px solid rgba(56,189,248,.3); border-radius: 10px; background: var(--bleu-voile); }
.icone svg { width: 24px; fill: none; stroke: var(--bleu); stroke-width: 1.5; }
.carte h3 { margin-bottom: 1rem; }
.carte p { margin-bottom: 1.8rem; font-size: .92rem; }
.carte a { position: absolute; left: 1.8rem; bottom: 1.7rem; color: var(--bleu); font-size: .82rem; font-weight: 700; }
.carte a span { margin-left: .35rem; }

.methode { background: linear-gradient(135deg, var(--fond), var(--fond-profond)); }
.methode__grille { display: grid; grid-template-columns: 1.15fr .85fr; gap: 7rem; align-items: center; }
.methode__intro { max-width: 650px; }
.etapes { margin: 2.8rem 0 0; padding: 0; list-style: none; }
.etapes li { position: relative; display: grid; grid-template-columns: 44px 1fr; gap: 1rem; padding-bottom: 1.5rem; }
.etapes li:not(:last-child)::after { content: ""; position: absolute; left: 21px; top: 40px; bottom: 3px; width: 1px; background: var(--bordure); }
.etapes li > span { z-index: 1; display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid rgba(56,189,248,.38); border-radius: 50%; color: var(--bleu); background: var(--fond); font: 700 .8rem ui-monospace, monospace; }
.etapes h3 { margin: .1rem 0 .25rem; font-size: 1rem; }
.etapes p { margin: 0; font-size: .88rem; }
.citation { padding: 3rem; border: 1px solid var(--bordure); border-radius: var(--radius); background: var(--surface); box-shadow: var(--ombre); }
.citation svg { width: 48px; margin-bottom: 2rem; fill: rgba(56,189,248,.18); }
.citation blockquote { margin: 0 0 2rem; color: var(--encre); font-size: clamp(1.35rem,2.5vw,1.85rem); font-weight: 550; line-height: 1.45; letter-spacing: -.02em; }
.citation p { display: flex; align-items: center; gap: .7rem; margin: 0; font-size: .75rem; text-transform: uppercase; letter-spacing: .08em; }
.citation p span { width: 24px; height: 1px; background: var(--bleu); }

.niveaux { display: grid; grid-template-columns: repeat(3,1fr); gap: 1rem; align-items: stretch; }
.niveau { position: relative; padding: 2rem; border: 1px solid var(--bordure); border-radius: var(--radius); background: var(--surface); }
.niveau--accent { border-color: rgba(56,189,248,.52); box-shadow: 0 0 55px rgba(14,165,233,.08); }
.niveau--futur { background: repeating-linear-gradient(135deg, rgba(30,41,59,.85), rgba(30,41,59,.85) 14px, rgba(22,32,51,.85) 14px, rgba(22,32,51,.85) 28px); }
.niveau__badge { position: absolute; top: 1.5rem; right: 1.5rem; padding: .25rem .55rem; border: 1px solid var(--bordure); border-radius: 999px; color: var(--texte); font-size: .65rem; font-weight: 700; }
.niveau--accent .niveau__badge { color: var(--bleu); border-color: rgba(56,189,248,.4); background: var(--bleu-voile); }
.niveau h3 { margin: 1.2rem 0 1rem; }
.niveau > p:not(.micro) { font-size: .88rem; }
.niveau ul { margin: 1.6rem 0 0; padding: 1.2rem 0 0; border-top: 1px solid var(--bordure); list-style: none; }
.niveau li { margin: .55rem 0; color: var(--texte); font-size: .8rem; }
.niveau li::before { content: "✓"; margin-right: .55rem; color: var(--vert); }

.contact { padding-top: 2rem; }
.contact__carte { display: flex; align-items: center; justify-content: space-between; gap: 4rem; padding: 3.5rem; border-radius: 18px; background: var(--bleu-fonce); }
.contact .eyebrow, .contact .eyebrow + h2, .contact__carte p { color: white; }
.contact .eyebrow span { background: white; }
.contact__carte h2 { max-width: 670px; }
.contact__carte p:last-child { max-width: 650px; margin-bottom: 0; opacity: .86; }
.pied { padding: 2rem 0; border-top: 1px solid var(--bordure); background: var(--fond-profond); }
.pied__inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.pied p { margin: 0; font-size: .75rem; }
.pied__email { color: var(--bleu); font-size: .78rem; }
.pied__email:hover { text-decoration: underline; }
.marque--footer { font-size: 1rem; }.marque--footer .marque__logo { width: 28px; height: 28px; }
.page-erreur { min-height: 100vh; }
.erreur-404 { min-height: 100vh; display: grid; place-items: center; padding: 3rem 0; }
.erreur-404__contenu { max-width: 760px; }
.erreur-404__contenu .marque { margin-bottom: 5rem; }
.erreur-404__contenu h1 { margin-bottom: 1rem; }
.erreur-404__contenu > p:not(.eyebrow) { max-width: 560px; margin-bottom: 2rem; }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

@media (max-width: 960px) {
  .hero__grille, .methode__grille { grid-template-columns: 1fr; }
  .hero__grille { gap: 4rem; }
  .pilotage { max-width: 600px; }
  .methode__grille { gap: 4rem; }
  .cartes-expertise, .niveaux { grid-template-columns: 1fr 1fr; }
  .niveau:last-child { grid-column: 1 / -1; }
}

@media (max-width: 760px) {
  .conteneur { width: min(calc(100% - 2rem), var(--max)); }
  .section { padding: 5rem 0; }
  .topbar__inner { min-height: 64px; }
  .nav-toggle { display: block; }
  .nav { position: absolute; top: 64px; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; padding: 1rem; border-bottom: 1px solid var(--bordure); background: var(--fond); }
  .nav.is-open { display: flex; }
  .nav__lien--cta { margin: .5rem 0 0; text-align: center; }
  .hero { min-height: auto; padding-block: 5rem; }
  h1 { font-size: clamp(2.5rem, 13vw, 4rem); }
  .bandeau__inner { flex-direction: column; gap: .4rem; padding-block: 1.2rem; }
  .bandeau i { display: none; }
  .cartes-expertise, .niveaux { grid-template-columns: 1fr; }
  .niveau:last-child { grid-column: auto; }
  .methode__grille { gap: 3rem; }
  .citation, .contact__carte { padding: 2rem; }
  .contact__carte { align-items: flex-start; flex-direction: column; gap: 1.5rem; }
  .pied__inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 600px) {
  .hero__actions, .hero__actions .btn { width: 100%; }
  .hero__actions { display: grid; }
  .indicateurs { grid-template-columns: 1fr; }
  .hero__preuves { display: grid; }
  .pilotage { padding: 1rem; }
  .prix strong { font-size: 1.8rem; }
}