/* KERVYNA — signature design "dark premium finance" (brief JPB 02/09/2026, verbatim
   docs/pilotage/contrats_preview_20260824/BRIEF_SIGNATURE_DESIGN_KERVYNA_VERBATIM_20260902.md).
   Palette échantillonnée sur kervyna_logo_1.png (voir DESIGN_AME_REPORT.md pour le détail des
   hex retenus) : bleu nuit presque noir / or champagne / turquoise sophistiqué / ivoire léger.
   Règle d'arbitrage brief §4 : "L'or donne le statut. Le turquoise donne la technologie." —
   l'or reste la couleur des chiffres et des statuts, le turquoise celle des éléments interactifs
   et de la donnée. Format compact volontaire (une règle simple = une ligne) : voir
   DESIGN_AME_REPORT.md §recouvrement pour la justification et la commande de contrôle. */

:root { --kv-bg: #05070f; --kv-bg-deep: #020309; --kv-surface: #0d1120; --kv-surface-2: #141a2f; --kv-gold: #c9a255; --kv-gold-light: #e8cf9a; --kv-gold-dim: #8a6a34; --kv-teal: #2ba6b0; --kv-teal-dim: #175767; --kv-ivory: #f3f0e8; --kv-muted: #9aa1b8; --kv-line: rgba(243, 240, 232, 0.09); --kv-wrap: 1160px; --kv-radius: 4px; --kv-radius-lg: 10px; --kv-gap-xs: 0.5rem; --kv-gap-sm: 1rem; --kv-gap-md: 1.75rem; --kv-gap-lg: 2.75rem; --kv-gap-xl: 4.5rem; --kv-font-display: "Playfair Display", Georgia, "Times New Roman", "Iowan Old Style", serif; --kv-font-ui: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; color-scheme: dark; }
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body { margin: 0; background: var(--kv-bg); color: var(--kv-ivory); font-family: var(--kv-font-ui); font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
h1, h2, h3 { font-family: var(--kv-font-display); font-weight: 600; letter-spacing: 0.005em; color: var(--kv-ivory); }
img { max-width: 100%; display: block; }
a { color: inherit; }
.container { width: 100%; max-width: var(--kv-wrap); margin-inline: auto; padding-inline: var(--kv-gap-md); }

/* Fond : lignes très fines + halo or discret, jamais de motif bougie/flèche (brief §3 "beaucoup d'air", "détails fins plutôt qu'effets voyants"). */
.kv-bg-grid { position: fixed; inset: 0; z-index: -2; background-image: linear-gradient(var(--kv-line) 1px, transparent 1px), linear-gradient(90deg, var(--kv-line) 1px, transparent 1px); background-size: 80px 80px; mask-image: radial-gradient(ellipse 70% 55% at 50% 0%, #000 35%, transparent 88%); opacity: 0.45; }
.kv-bg-glow { position: fixed; top: -12%; right: -8%; z-index: -1; width: 60vw; height: 60vw; max-width: 820px; max-height: 820px; background: radial-gradient(circle, rgba(201, 162, 85, 0.1) 0%, transparent 68%); pointer-events: none; }

/* ---------- Header ---------- */
.kv-header { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(12px); background: rgba(5, 7, 15, 0.78); border-bottom: 1px solid var(--kv-line); }
.kv-header-row { display: flex; align-items: center; justify-content: space-between; height: 76px; gap: var(--kv-gap-md); }
.kv-brand { display: inline-flex; align-items: center; gap: 0.6rem; text-decoration: none; flex: none; }
.kv-brand-mark { width: 40px; height: 40px; flex: none; }
.kv-brand-mark img { width: 100%; height: 100%; object-fit: contain; }
.kv-brand-name { font-family: var(--kv-font-display); font-weight: 600; font-size: 1.15rem; letter-spacing: 0.06em; }
.kv-nav { display: none; gap: var(--kv-gap-lg); font-size: 0.88rem; color: var(--kv-muted); }
.kv-nav a { text-decoration: none; transition: color 0.2s ease; }
.kv-nav a:hover { color: var(--kv-teal); }
@media (min-width: 920px) { .kv-nav { display: flex; } }

/* ---------- Boutons — brief §7 "jamais bouton cheap flashy" ---------- */
.kv-btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 0.8rem 1.6rem; border-radius: var(--kv-radius); font-weight: 600; font-size: 0.92rem; text-decoration: none; border: 1px solid transparent; cursor: pointer; transition: filter 0.2s ease, border-color 0.2s ease, transform 0.15s ease; white-space: nowrap; }
.kv-btn:active { transform: scale(0.98); }
.kv-btn-primary { background: linear-gradient(135deg, var(--kv-gold-light), var(--kv-gold)); color: #1a1204; }
.kv-btn-primary:hover { filter: brightness(1.08); }
.kv-btn-ghost { background: transparent; border-color: var(--kv-line); color: var(--kv-ivory); }
.kv-btn-ghost:hover { border-color: var(--kv-teal); color: var(--kv-teal); }
.kv-btn-sm { padding: 0.55rem 1.15rem; font-size: 0.82rem; }

/* ---------- Hero — brief §11 "Message simple + logo + mockup dashboard / graphique" ---------- */
.kv-hero { padding: var(--kv-gap-xl) 0 var(--kv-gap-lg); }
.kv-hero-grid { display: grid; grid-template-columns: 1fr; gap: var(--kv-gap-lg); align-items: center; }
@media (min-width: 980px) { .kv-hero-grid { grid-template-columns: 1.05fr 0.95fr; } }
.kv-hero-copy { min-width: 0; }
.kv-eyebrow { display: inline-flex; align-items: center; gap: 0.5rem; font-size: 0.72rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--kv-gold-light); margin-bottom: var(--kv-gap-sm); }
.kv-eyebrow-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--kv-teal); flex: none; }
.kv-hero-mark { width: 72px; height: 72px; margin: 0 0 var(--kv-gap-sm); border-radius: var(--kv-radius-lg); }
.kv-hero h1 { font-size: clamp(2.1rem, 4.4vw, 3.2rem); line-height: 1.12; margin: 0 0 var(--kv-gap-sm); max-width: 15ch; }
.kv-lead { color: var(--kv-muted); font-size: clamp(1rem, 1.6vw, 1.1rem); max-width: 46ch; margin: 0 0 var(--kv-gap-md); }
.kv-hero-ctas { display: flex; flex-wrap: wrap; gap: var(--kv-gap-sm); margin-bottom: var(--kv-gap-sm); }
.kv-hero-disclaimer { color: var(--kv-muted); font-size: 0.78rem; max-width: 48ch; margin: var(--kv-gap-sm) 0 0; }

/* ---------- Hero mockup (dashboard/graphique) ---------- */
.kv-mock { background: linear-gradient(165deg, var(--kv-surface), var(--kv-bg-deep)); border: 1px solid var(--kv-line); border-radius: var(--kv-radius-lg); padding: var(--kv-gap-md); box-shadow: 0 30px 70px -40px rgba(0, 0, 0, 0.7); }
.kv-mock-head { display: flex; align-items: center; justify-content: space-between; font-size: 0.85rem; color: var(--kv-muted); margin-bottom: var(--kv-gap-sm); }
.kv-mock-pill { padding: 0.3rem 0.7rem; border-radius: 999px; border: 1px solid var(--kv-gold-dim); color: var(--kv-gold-light); font-size: 0.72rem; }
.kv-mock-chart { width: 100%; height: 100px; margin-bottom: 0.4rem; }
.kv-mock-line { stroke: var(--kv-teal); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.kv-mock-avg { stroke: var(--kv-gold-dim); stroke-width: 1.5; stroke-dasharray: 3 4; stroke-linecap: round; }
.kv-mock-dot { fill: var(--kv-gold-light); }
.kv-mock-caption { font-size: 0.72rem; color: var(--kv-muted); margin: 0 0 var(--kv-gap-sm); }
.kv-mock-rows { display: flex; flex-direction: column; gap: 0.55rem; margin-bottom: var(--kv-gap-sm); }
.kv-mock-row { display: grid; grid-template-columns: 1fr 2fr; align-items: center; gap: 0.6rem; font-size: 0.78rem; color: var(--kv-muted); }
.kv-mock-bar { display: block; height: 6px; border-radius: 999px; background: rgba(243, 240, 232, 0.08); overflow: hidden; }
.kv-mock-bar span { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--kv-teal-dim), var(--kv-teal)); }
/* Longueurs purement illustratives (mockup décoratif aria-hidden, brief §9 "répartition sectorielle") — pas de chiffre exposé dans le HTML, seule l'implémentation CSS varie la longueur visuelle. */
.kv-mock-bar-lg { width: 64%; }
.kv-mock-bar-md { width: 44%; }
.kv-mock-bar-sm { width: 30%; }
.kv-mock-bar-xs { width: 18%; }
.kv-mock-foot { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.kv-tag { font-size: 0.68rem; padding: 0.3rem 0.6rem; border-radius: 999px; border: 1px solid var(--kv-line); }
.kv-tag-teal { color: var(--kv-teal); border-color: var(--kv-teal-dim); }
.kv-tag-gold { color: var(--kv-gold-light); border-color: var(--kv-gold-dim); }

/* ---------- Sections ---------- */
section { padding: var(--kv-gap-xl) 0; }
.kv-section-head { max-width: 640px; margin: 0 auto var(--kv-gap-lg); text-align: center; }
.kv-section-head .kv-eyebrow { justify-content: center; }
.kv-section-head h2 { font-size: clamp(1.6rem, 3vw, 2.15rem); margin: 0 0 var(--kv-gap-xs); }
.kv-section-head p { color: var(--kv-muted); margin: 0; }

/* ---------- Stats (Clarté / zone de prix — brief §10.2) ---------- */
.kv-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--kv-gap-sm); }
@media (min-width: 720px) { .kv-stats { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1080px) { .kv-stats { grid-template-columns: repeat(6, 1fr); } }
.kv-stat { background: var(--kv-surface); border: 1px solid var(--kv-line); border-radius: var(--kv-radius-lg); padding: var(--kv-gap-md) var(--kv-gap-sm); text-align: center; }
.kv-stat-value { display: block; font-family: var(--kv-font-display); font-size: 1.5rem; color: var(--kv-gold-light); margin-bottom: 0.35rem; }
.kv-stat-value small { font-size: 0.9rem; color: var(--kv-muted); }
.kv-stat-label { display: block; font-size: 0.78rem; color: var(--kv-muted); }

/* ---------- Pillars (Ce que KERVYNA est) ---------- */
.kv-pillars { display: grid; grid-template-columns: 1fr; gap: var(--kv-gap-sm); }
@media (min-width: 720px) { .kv-pillars { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .kv-pillars { grid-template-columns: repeat(3, 1fr); } }
.kv-pillar { background: var(--kv-surface); border: 1px solid var(--kv-line); border-radius: var(--kv-radius-lg); padding: var(--kv-gap-md); }
.kv-pillar-icon { display: inline-block; color: var(--kv-teal); font-size: 0.9rem; margin-bottom: 0.6rem; }
.kv-pillar h3 { font-size: 1.05rem; margin: 0 0 0.4rem; }
.kv-pillar p { color: var(--kv-muted); font-size: 0.92rem; margin: 0; }

/* ---------- Le produit ---------- */
.kv-split { display: grid; grid-template-columns: 1fr; gap: var(--kv-gap-sm); }
@media (min-width: 760px) { .kv-split { grid-template-columns: repeat(2, 1fr); } }
.kv-card { background: linear-gradient(180deg, var(--kv-surface), var(--kv-surface-2)); border: 1px solid var(--kv-line); border-radius: var(--kv-radius-lg); padding: var(--kv-gap-md); }
.kv-card h3 { margin: 0 0 var(--kv-gap-xs); font-size: 1.15rem; }
.kv-card p { color: var(--kv-muted); margin: 0; font-size: 0.95rem; }

/* ---------- Les outils ---------- */
.kv-tools { display: grid; grid-template-columns: 1fr; gap: var(--kv-gap-sm); }
@media (min-width: 720px) { .kv-tools { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .kv-tools { grid-template-columns: repeat(5, 1fr); } }
.kv-tool { border-top: 2px solid var(--kv-gold-dim); padding: var(--kv-gap-sm) 0 0; }
.kv-tool h3 { font-size: 0.98rem; margin: 0 0 0.4rem; }
.kv-tool p { font-size: 0.85rem; color: var(--kv-muted); margin: 0; }

/* ---------- Payout flow ---------- */
.kv-flow { display: grid; grid-template-columns: 1fr; gap: var(--kv-gap-sm); align-items: start; }
@media (min-width: 1000px) { .kv-flow { grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; } }
.kv-flow-step { background: var(--kv-surface); border: 1px solid var(--kv-line); border-radius: var(--kv-radius-lg); padding: var(--kv-gap-sm); }
.kv-flow-icon { display: inline-block; color: var(--kv-gold-light); margin-bottom: 0.5rem; }
.kv-flow-step h3 { font-size: 0.95rem; margin: 0 0 0.35rem; }
.kv-flow-step p { font-size: 0.82rem; color: var(--kv-muted); margin: 0; }
.kv-flow-sep { display: none; }
@media (min-width: 1000px) { .kv-flow-sep { display: block; align-self: center; width: 22px; height: 1px; background: var(--kv-line); } }

/* ---------- Comparatif — brief §11 "comparatif implicite" ---------- */
.kv-table-wrap { overflow-x: auto; border: 1px solid var(--kv-line); border-radius: var(--kv-radius-lg); }
.kv-compare { width: 100%; border-collapse: collapse; font-size: 0.9rem; min-width: 640px; }
.kv-compare th, .kv-compare td { text-align: left; padding: var(--kv-gap-sm); border-bottom: 1px solid var(--kv-line); vertical-align: top; }
.kv-compare thead th { color: var(--kv-gold-light); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; font-weight: 600; }
.kv-compare tbody th { color: var(--kv-ivory); font-weight: 600; white-space: nowrap; }
.kv-compare td { color: var(--kv-muted); }
.kv-compare tbody tr:last-child th, .kv-compare tbody tr:last-child td { border-bottom: none; }

/* ---------- FAQ ---------- */
.kv-faq { display: flex; flex-direction: column; gap: 0.6rem; max-width: 780px; margin: 0 auto; }
.kv-faq-item { background: var(--kv-surface); border: 1px solid var(--kv-line); border-radius: var(--kv-radius-lg); padding: var(--kv-gap-sm) var(--kv-gap-md); }
.kv-faq-item summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; align-items: center; justify-content: space-between; gap: var(--kv-gap-sm); }
.kv-faq-item summary::-webkit-details-marker { display: none; }
.kv-faq-item summary::after { content: "+"; color: var(--kv-teal); font-size: 1.1rem; flex: none; }
.kv-faq-item[open] summary::after { content: "−"; }
.kv-faq-item p { color: var(--kv-muted); font-size: 0.92rem; margin: var(--kv-gap-xs) 0 0; }

/* ---------- CTA final ---------- */
.kv-cta-final { text-align: center; }
.kv-cta-card { max-width: 640px; margin: 0 auto; padding: var(--kv-gap-lg) var(--kv-gap-md); }
.kv-cta-card h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin: 0 0 var(--kv-gap-xs); }
.kv-cta-card p { color: var(--kv-muted); margin: 0 0 var(--kv-gap-sm); }

/* ---------- Footer ---------- */
.kv-footer { border-top: 1px solid var(--kv-line); padding: var(--kv-gap-md) 0; color: var(--kv-muted); font-size: 0.8rem; }
.kv-footer-grid { display: flex; flex-direction: column; gap: var(--kv-gap-sm); }
@media (min-width: 720px) { .kv-footer-grid { flex-direction: row; align-items: center; justify-content: space-between; } }
.kv-footer-links { display: flex; gap: var(--kv-gap-sm); flex-wrap: wrap; }
.kv-footer-links a { text-decoration: none; color: var(--kv-muted); }
.kv-footer-links a:hover { color: var(--kv-teal); }

/* ---------- Reveal-on-scroll — brief §8 "apparition douce", "scroll reveal propre" ---------- */
[data-reveal] { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Small screens ---------- */
@media (max-width: 480px) {
  .kv-hero-ctas .kv-btn { width: 100%; }
  .kv-hero-ctas { flex-direction: column; }
}