/* =========================================================================
   AIFOS — Feuille de style principale
   Référence : AIFOS_SITE_SPEC_FR_EN_V1.md
   ========================================================================= */

/* -------------------------------------------------------------------------
   1. DESIGN TOKENS (spec §2)
   ------------------------------------------------------------------------- */
:root {
  /* Couleurs */
  --navy-950: #081D2D;
  --navy-800: #132F45;
  --steel-600: #2E4B63;
  --gold-500: #C8A96A;
  --gold-400: #D9BE87;
  --grey-050: #F2F4F6;
  --white: #FFFFFF;
  --ink-900: #111820;
  /* Spec §2.1 donne #747B82, mais ce gris ne tient que 4,29:1 sur blanc et
     3,89:1 sur --grey-050 : sous le seuil AA de 4,5:1 exigé par §15, alors
     qu'il porte du texte courant. Assombri de 9 % (teinte inchangée) pour
     atteindre 5,01:1 sur blanc et 4,54:1 sur gris clair. */
  --grey-500: #6A7076;
  --border: #D8DDE2;

  --border-dark: rgba(255, 255, 255, .12);
  --border-dark-soft: rgba(255, 255, 255, .08);
  --white-70: rgba(255, 255, 255, .72);
  --white-55: rgba(255, 255, 255, .58);

  /* Typographies */
  --font-display: "Playfair Display", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --font-ui: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Échelle d'espacement (spec §3.3) */
  --sp-8: 8px;
  --sp-16: 16px;
  --sp-24: 24px;
  --sp-32: 32px;
  --sp-40: 40px;
  --sp-48: 48px;
  --sp-64: 64px;
  --sp-80: 80px;
  --sp-96: 96px;
  --sp-128: 128px;

  /* Sections : mobile réduit de ~40 % (spec §3.3) */
  --section-dense: 36px;
  --section-standard: 44px;
  --section-hero: 64px;
  --section-major: 48px;

  /* Conteneur */
  --container: 1280px;
  --gutter: 16px;
  --pad-x: 20px;

  --header-h: 68px;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

@media (min-width: 768px) {
  :root {
    --pad-x: 24px;
    --gutter: 20px;
    --header-h: 76px;
    --section-dense: 44px;
    --section-standard: 54px;
    --section-hero: 84px;
    --section-major: 58px;
  }
}

@media (min-width: 1080px) {
  :root {
    --pad-x: 32px;
    --gutter: 24px;
    --header-h: 84px;
    --section-dense: 50px;
    --section-standard: 62px;
    --section-hero: 108px;
    --section-major: 66px;
  }
}

/* -------------------------------------------------------------------------
   2. RESET
   ------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}

body {
  margin: 0;
  background: var(--white);
  color: var(--ink-900);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { max-width: 100%; display: block; }
img { height: auto; }

a { color: inherit; }

button, input, select, textarea { font: inherit; color: inherit; }

h1, h2, h3, h4 { margin: 0; font-weight: 500; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: var(--sp-48) 0;
}

::selection { background: var(--gold-500); color: var(--navy-950); }

/* -------------------------------------------------------------------------
   3. TYPOGRAPHIE (spec §2.2)
   ------------------------------------------------------------------------- */
.h1, .h2, .h3, .h4 { font-family: var(--font-display); font-weight: 500; }

.h1 {
  font-size: 40px;
  line-height: 1.06;
  letter-spacing: -.01em;
}

.h2 {
  font-size: 32px;
  line-height: 1.14;
  letter-spacing: -.005em;
}

.h3 { font-size: 24px; line-height: 1.22; }
.h4 { font-size: 20px; line-height: 1.3; }

@media (min-width: 768px) {
  .h1 { font-size: 52px; line-height: 1.05; }
  .h2 { font-size: 38px; line-height: 1.12; }
  .h3 { font-size: 26px; }
}

@media (min-width: 1080px) {
  .h1 { font-size: 64px; }
  .h2 { font-size: 42px; }
  .h3 { font-size: 28px; line-height: 1.2; }
  .h4 { font-size: 22px; }
}

.lead { font-size: 17px; line-height: 1.62; }
@media (min-width: 768px) { .lead { font-size: 18px; line-height: 1.65; } }

.small { font-size: 14px; line-height: 1.5; }
.caption { font-size: 12px; line-height: 1.4; }

/* Sur-titre / eyebrow */
.eyebrow {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold-500);
  margin-bottom: var(--sp-16);
}
.eyebrow--dark { color: var(--steel-600); }

/* Pull quote (spec §2.2) */
.pull-quote {
  font-family: var(--font-display);
  font-size: 26px;
  line-height: 1.32;
  font-weight: 500;
  margin: 0;
  padding-left: var(--sp-24);
  border-left: 2px solid var(--gold-500);
}
@media (min-width: 768px) { .pull-quote { font-size: 30px; } }
@media (min-width: 1080px) { .pull-quote { font-size: 34px; padding-left: var(--sp-32); } }

/* Ligne d'accent or */
.rule-gold {
  width: 56px;
  height: 2px;
  background: var(--gold-500);
  border: 0;
  margin: 0 0 var(--sp-24);
}

.text-muted { color: var(--grey-500); }
.text-gold { color: var(--gold-500); }

/* Emphase forte dans les paragraphes : poids 600, pas de couleur seule (a11y §15) */
.prose strong, .rich strong { font-weight: 600; }

.stack > * + * { margin-top: var(--sp-16); }
.stack-24 > * + * { margin-top: var(--sp-24); }
.stack-32 > * + * { margin-top: var(--sp-32); }

/* -------------------------------------------------------------------------
   4. LAYOUT (spec §3)
   ------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.container--narrow { max-width: 880px; }

.section { padding-block: var(--section-standard); }
.section--dense { padding-block: var(--section-dense); }
.section--major { padding-block: var(--section-major); }

/* Fonds de section */
.section--light { background: var(--white); color: var(--ink-900); }
.section--grey { background: var(--grey-050); color: var(--ink-900); }
.section--navy { background: var(--navy-950); color: var(--white); }
.section--navy-800 { background: var(--navy-800); color: var(--white); }

.section--navy .eyebrow { color: var(--gold-500); }
.section--navy .text-muted { color: var(--white-55); }
.section--navy .pull-quote { border-left-color: var(--gold-500); }

.section-head { max-width: 760px; }
.section-head + * { margin-top: var(--sp-24); }

/* Grilles */
.grid {
  display: grid;
  gap: var(--gutter);
  grid-template-columns: repeat(4, 1fr);
}
@media (min-width: 768px) { .grid { grid-template-columns: repeat(8, 1fr); gap: var(--gutter); } }
@media (min-width: 1080px) { .grid { grid-template-columns: repeat(12, 1fr); } }

.cols-2, .cols-3, .cols-4 { display: grid; gap: var(--sp-24); }
@media (min-width: 768px) {
  .cols-2 { grid-template-columns: repeat(2, 1fr); }
  .cols-3 { grid-template-columns: repeat(2, 1fr); }
  .cols-4 { grid-template-columns: repeat(2, 1fr); }
  .cols-2, .cols-3, .cols-4 { gap: var(--sp-32); }
}
@media (min-width: 1080px) {
  .cols-3 { grid-template-columns: repeat(3, 1fr); }
  .cols-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Bloc texte + visuel */
.split {
  display: grid;
  gap: var(--sp-32);
  align-items: center;
}
@media (min-width: 900px) {
  .split { grid-template-columns: 1fr 1fr; gap: var(--sp-64); }
  .split--55 { grid-template-columns: 55fr 45fr; }
  .split--45 { grid-template-columns: 45fr 55fr; }
  .split--reverse > :first-child { order: 2; }
}

/* -------------------------------------------------------------------------
   5. BOUTONS (spec §4.2)
   ------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 14px 22px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .25s var(--ease), color .25s var(--ease),
              border-color .25s var(--ease), transform .25s var(--ease);
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--gold-500);
  color: var(--navy-950);
}
.btn--primary:hover { background: #B99A5C; }

.btn--secondary-dark {
  background: transparent;
  border-color: var(--gold-500);
  color: var(--white);
}
.btn--secondary-dark:hover { background: rgba(200, 169, 106, .12); }

.btn--secondary-light {
  background: transparent;
  border-color: var(--navy-950);
  color: var(--navy-950);
}
.btn--secondary-light:hover { background: rgba(8, 29, 45, .06); }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-16);
}

/* Lien texte + flèche */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  color: var(--gold-500);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-decoration: none;
}
.link-arrow .arrow { transition: transform .25s var(--ease); }
.link-arrow:hover .arrow { transform: translateX(4px); }
.link-arrow:hover { text-decoration: underline; text-underline-offset: 4px; }

.link-arrow--dark { color: var(--navy-950); }

/* Liens dans le corps de texte */
.prose a:not(.btn):not(.link-arrow) {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: var(--gold-500);
  text-underline-offset: 3px;
}

/* -------------------------------------------------------------------------
   6. CARDS & TAGS (spec §4.3, §4.4)
   ------------------------------------------------------------------------- */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 28px;
  transition: box-shadow .3s var(--ease), transform .3s var(--ease), border-color .3s var(--ease);
}
@media (min-width: 1080px) { .card { padding: 32px; } }

.card:hover {
  box-shadow: 0 12px 32px rgba(8, 29, 45, .09);
  border-color: #C4CBD2;
}

.card--dark {
  background: var(--navy-800);
  border-color: transparent;
  color: var(--white);
}
.card--dark:hover { box-shadow: none; border-color: var(--gold-500); }

.card--flat:hover { box-shadow: none; transform: none; }

.card__index {
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--gold-500);
  letter-spacing: .1em;
  display: block;
  margin-bottom: var(--sp-16);
}

/* Icônes de ligne — maquette §04. Décoratives : aria-hidden dans le markup,
   l'information reste portée par le titre de la carte. */
.icon {
  display: block;
  width: 28px;
  height: 28px;
  color: var(--gold-500);
  flex: none;
}
.icon svg { width: 100%; height: 100%; display: block; }

.card__head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: var(--sp-24);
}
.card__head .card__index { margin-bottom: 0; }

.method__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: var(--sp-16);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--gold-500);
}
.method__icon svg { width: 22px; height: 22px; }
.section--navy .method__icon { border-color: var(--border-dark); }

.card__title { margin-bottom: var(--sp-8); }
.card__kicker {
  font-size: 13px;
  font-weight: 600;
  color: var(--steel-600);
  margin-bottom: var(--sp-16);
}
.card--dark .card__kicker { color: var(--gold-500); }

/* Tags */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-block;
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--grey-050);
  font-size: 12px;
  line-height: 1.4;
  color: var(--steel-600);
  white-space: nowrap;
}

.tag--outline { background: transparent; border-color: var(--steel-600); }
.tag--gold { background: transparent; border-color: var(--gold-500); color: #8A6E33; }

.section--navy .tag {
  background: rgba(255, 255, 255, .05);
  border-color: var(--border-dark);
  color: var(--white-70);
}
.section--navy .tag--gold { border-color: var(--gold-500); color: var(--gold-500); }

/* Listes de compétences */
.list-check { display: grid; gap: 10px; }
@media (min-width: 768px) { .list-check { grid-template-columns: repeat(2, 1fr); gap: 10px var(--sp-32); } }

.list-check li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.55;
}
.list-check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 1px;
  background: var(--gold-500);
}

.list-inline {
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel-600);
}
.section--navy .list-inline { color: var(--white-70); }

/* Bloc "domaine" : titre court + contenu */
.domain { border-top: 1px solid var(--border); padding-top: var(--sp-24); }
.section--navy .domain { border-top-color: var(--border-dark); }

.domain__label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gold-500);
  margin-bottom: var(--sp-8);
}
.domain__value { font-size: 15px; line-height: 1.6; color: var(--steel-600); }
.section--navy .domain__value { color: var(--white-70); }

/* -------------------------------------------------------------------------
   6 bis. MEDIA — cadrage au nombre d'or
   Le ratio est verrouille en CSS (aspect-ratio) : quelle que soit la source
   fournie, le cadrage affiche reste phi. Le recadrage est fait par le
   navigateur via object-fit, donc aucune image ne peut arriver deformee.
   ------------------------------------------------------------------------- */
.media {
  position: relative;
  margin: 0;
  isolation: isolate;
}

.media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1.618 / 1;
  object-fit: cover;
  background: var(--grey-050);
}

.section--navy .media img,
.section--navy-800 .media img,
.hero .media img { background: var(--navy-800); }

/* --- Variante encadree (defaut) : filet fin + equerres or --- */
.media--framed img { border: 1px solid var(--border); }
.section--navy .media--framed img,
.section--navy-800 .media--framed img,
.hero .media--framed img { border-color: var(--border-dark); }

.media--framed::before,
.media--framed::after {
  content: "";
  position: absolute;
  z-index: 2;
  width: 84px;
  height: 84px;
  pointer-events: none;
}
.media--framed::before {
  top: -9px; left: -9px;
  border-top: 2px solid var(--gold-500);
  border-left: 2px solid var(--gold-500);
}
.media--framed::after {
  bottom: -9px; right: -9px;
  border-bottom: 2px solid var(--gold-500);
  border-right: 2px solid var(--gold-500);
}
@media (max-width: 620px) {
  .media--framed::before, .media--framed::after { width: 52px; height: 52px; }
}

/* --- Variante fondue : l'image se dissout dans le fond de section --- */
.media--fade img {
  border: 0;
  -webkit-mask-image:
    linear-gradient(to bottom, #000 62%, transparent 100%),
    linear-gradient(to right, transparent 0, #000 12%, #000 88%, transparent 100%);
  mask-image:
    linear-gradient(to bottom, #000 62%, transparent 100%),
    linear-gradient(to right, transparent 0, #000 12%, #000 88%, transparent 100%);
  -webkit-mask-composite: source-in;
  mask-composite: intersect;
}
.media--fade::before, .media--fade::after { content: none; }

/* Legende optionnelle */
.media__caption {
  margin-top: var(--sp-16);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--grey-500);
}
.section--navy .media__caption,
.section--navy-800 .media__caption { color: var(--white-55); }

/* -------------------------------------------------------------------------
   7. HEADER (spec §4.1)
   ------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--gold-500);
  color: var(--navy-950);
  padding: 12px 20px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus { left: 8px; top: 8px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy-950);
  border-bottom: 1px solid var(--border-dark-soft);
  transition: box-shadow .3s var(--ease);
}
.site-header.is-stuck { box-shadow: 0 8px 28px rgba(8, 29, 45, .28); }

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-24);
  min-height: var(--header-h);
}

.site-logo { display: inline-flex; align-items: center; text-decoration: none; }
.site-logo img { height: 34px; width: auto; }
@media (min-width: 1080px) { .site-logo img { height: 40px; } }

.site-nav { display: none; }

@media (min-width: 1080px) {
  .site-nav {
    display: flex;
    align-items: center;
    gap: var(--sp-32);
  }
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--sp-24);
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 6px 0;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--white-70);
  text-decoration: none;
  transition: color .2s var(--ease);
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--gold-500);
  transition: width .3s var(--ease);
}
.site-nav__link:hover { color: var(--white); }
.site-nav__link:hover::after { width: 100%; }

.site-nav__link[aria-current="page"] { color: var(--white); }
.site-nav__link[aria-current="page"]::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: var(--sp-16); }

/* Switch langue */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
}
.lang-switch a, .lang-switch span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  min-height: 28px;
  padding: 2px 4px;
  text-decoration: none;
  color: var(--white-55);
  transition: color .2s var(--ease);
}
.lang-switch a:hover { color: var(--white); }
.lang-switch [aria-current="true"] { color: var(--gold-500); }
.lang-switch__sep { color: rgba(255, 255, 255, .25); min-width: 0 !important; }

.header-cta { display: none; }
@media (min-width: 1080px) { .header-cta { display: inline-flex; } }

/* Burger */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--border-dark);
  border-radius: 2px;
  cursor: pointer;
}
@media (min-width: 1080px) { .nav-toggle { display: none; } }

.nav-toggle__bars { display: block; width: 18px; height: 12px; position: relative; }
.nav-toggle__bars::before,
.nav-toggle__bars::after,
.nav-toggle__bars span {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--white);
  transition: transform .3s var(--ease), opacity .2s var(--ease);
}
.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars span { top: 5.25px; }
.nav-toggle__bars::after { bottom: 0; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(5.25px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-5.25px) rotate(-45deg); }

/* Menu mobile */
.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 0;
  z-index: 99;
  background: var(--navy-950);
  padding: var(--sp-32) var(--pad-x) var(--sp-48);
  overflow-y: auto;
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s var(--ease), transform .25s var(--ease), visibility .25s;
}
.mobile-nav.is-open { opacity: 1; transform: none; visibility: visible; }
@media (min-width: 1080px) { .mobile-nav { display: none; } }

.mobile-nav__list { display: grid; gap: 2px; margin-bottom: var(--sp-32); }
.mobile-nav__link {
  display: block;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-dark-soft);
  font-family: var(--font-display);
  font-size: 24px;
  color: var(--white);
  text-decoration: none;
}
.mobile-nav__link[aria-current="page"] { color: var(--gold-500); }

body.nav-open { overflow: hidden; }

/* -------------------------------------------------------------------------
   8. HERO
   ------------------------------------------------------------------------- */
.hero {
  background: var(--navy-950);
  color: var(--white);
  padding-block: var(--section-hero);
  position: relative;
  overflow: hidden;
}

.hero__grid {
  display: grid;
  gap: var(--sp-48);
  align-items: center;
  position: relative;
  z-index: 2;
}
@media (min-width: 960px) {
  .hero__grid { grid-template-columns: 1fr 1fr; gap: var(--sp-64); }
}

.hero__title { margin-bottom: var(--sp-24); }

.hero__text p { color: var(--white-70); }
.hero__text p strong { color: var(--white); font-weight: 600; }

.hero__disciplines {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--gold-500);
  line-height: 1.7;
}

.hero__actions { margin-top: var(--sp-32); }

.hero__visual { position: relative; }
.hero__visual img {
  width: 100%;
  border-radius: 2px;
}

/* Hero compact (pages intérieures) */
.hero--compact { padding-block: calc(var(--section-hero) * .78); }
.hero--compact .hero__grid { grid-template-columns: 1fr; }
.hero--compact .hero__inner { max-width: 780px; }

/* Hero sur image : overlay obligatoire (spec §13) */
.hero--image { background: var(--navy-950); }
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__bg img { width: 100%; height: 100%; object-fit: cover; }
.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(8, 29, 45, .92) 0%, rgba(8, 29, 45, .82) 45%, rgba(8, 29, 45, .62) 100%);
}
@media (max-width: 767px) {
  .hero__bg::after { background: rgba(8, 29, 45, .78); }
}

/* Hero clair */
.hero--light {
  background: var(--grey-050);
  color: var(--ink-900);
}
.hero--light .hero__text p { color: var(--steel-600); }
.hero--light .hero__text p strong { color: var(--ink-900); }
.hero--light .eyebrow { color: var(--steel-600); }

/* -------------------------------------------------------------------------
   9. BANDEAU RÉFÉRENCES (spec §8.2)
   ------------------------------------------------------------------------- */
.logo-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-32) var(--sp-24);
  align-items: center;
  justify-items: center;
}
@media (min-width: 768px) { .logo-strip { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1080px) {
  .logo-strip { grid-template-columns: repeat(5, 1fr); gap: var(--sp-32); }
}

/* Sans cadre : les logos reposent directement sur le fond de section.
   Le rythme vient de l'espacement, pas d'une bordure. */
.logo-strip__item {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 56px;
  text-align: center;
}

/* Les logos fournis ont des proportions tres differentes (embleme carre,
   signature horizontale). On borne hauteur et largeur pour obtenir un poids
   optique comparable d'une case a l'autre. */
.logo-strip__item img {
  max-height: 38px;
  max-width: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: saturate(.92);
  transition: filter .3s var(--ease), opacity .3s var(--ease);
}
.logo-strip__item img:hover { filter: none; }
.logo-strip__item img.is-tall { max-height: 50px; }
.logo-strip__item img.is-wide { max-height: 26px; }

/* Placeholder texte tant que les logos officiels ne sont pas fournis */
.logo-strip__name {
  font-family: var(--font-display);
  font-size: 15px;
  line-height: 1.25;
  color: var(--steel-600);
  letter-spacing: .02em;
}

/* -------------------------------------------------------------------------
   10. EXPERTISES — liste numérotée (spec §8.3)
   ------------------------------------------------------------------------- */
.expertise-list { display: grid; gap: var(--sp-24); }
@media (min-width: 768px) { .expertise-list { grid-template-columns: repeat(2, 1fr); gap: var(--sp-24); } }
@media (min-width: 1200px) { .expertise-list { grid-template-columns: repeat(3, 1fr); } }

.expertise-card { display: flex; flex-direction: column; height: 100%; }
.expertise-card__lead {
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.4;
  color: var(--steel-600);
  margin-bottom: var(--sp-16);
}
.expertise-card__desc { font-size: 15px; line-height: 1.6; color: var(--grey-500); }

/* Matrice 2 × 2 (spec §8.4) */
.matrix {
  display: grid;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
}
@media (min-width: 620px) { .matrix { grid-template-columns: repeat(2, 1fr); } }

.matrix__cell { background: var(--white); padding: var(--sp-24); }
@media (min-width: 1080px) { .matrix__cell { padding: var(--sp-32); } }

.matrix__label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gold-500);
  margin-bottom: 10px;
}
.matrix__value { font-size: 15px; line-height: 1.6; color: var(--steel-600); }

/* -------------------------------------------------------------------------
   11. MÉTHODE — étapes 01→04 (spec §8.6)
   ------------------------------------------------------------------------- */
.method { display: grid; gap: var(--sp-24); counter-reset: step; }
@media (min-width: 620px) { .method { grid-template-columns: repeat(2, 1fr); gap: var(--sp-32); } }
@media (min-width: 1080px) { .method { grid-template-columns: repeat(4, 1fr); } }

.method__step { position: relative; padding-top: var(--sp-24); border-top: 1px solid var(--border); }
.section--navy .method__step { border-top-color: var(--border-dark); }

.method__step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold-500);
  transition: width .8s var(--ease);
}
.method__step.is-visible::before { width: 48px; }

.method__num {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--gold-500);
  display: block;
  margin-bottom: 10px;
}
.method__title {
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.25;
  margin-bottom: 10px;
}
.method__desc { font-size: 15px; line-height: 1.6; color: var(--grey-500); }
.section--navy .method__desc { color: var(--white-55); }

/* -------------------------------------------------------------------------
   12. EXPÉRIENCES (spec §10)
   ------------------------------------------------------------------------- */
.experience {
  border-top: 1px solid var(--border);
  padding-block: var(--sp-48);
}
.experience:last-of-type { border-bottom: 1px solid var(--border); }

@media (min-width: 900px) {
  .experience {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--sp-64);
    padding-block: var(--sp-48);
  }
}

.experience__org {
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.25;
  margin-bottom: var(--sp-8);
}
.experience__meta { font-size: 13px; color: var(--grey-500); }
.experience__title {
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.3;
  color: var(--steel-600);
  margin-bottom: var(--sp-16);
}
@media (min-width: 1080px) { .experience__title { font-size: 26px; } }

.experience__body > * + * { margin-top: var(--sp-16); }

/* Fil conducteur */
.thread { display: grid; gap: var(--sp-24); }
@media (min-width: 768px) { .thread { grid-template-columns: repeat(2, 1fr); gap: var(--sp-24) var(--sp-48); } }

.thread__item {
  display: flex;
  gap: var(--sp-16);
  align-items: baseline;
  padding-bottom: var(--sp-16);
  border-bottom: 1px solid var(--border-dark);
}
.thread__num {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--gold-500);
  flex: none;
}
.thread__text {
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.35;
}
@media (min-width: 1080px) { .thread__text { font-size: 21px; } }

/* -------------------------------------------------------------------------
   13. PRINCIPES / POSITIONNEMENT (spec §11.2, §11.4)
   ------------------------------------------------------------------------- */
.pillar { border-top: 2px solid var(--gold-500); padding-top: var(--sp-24); }
.pillar__title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  margin-bottom: var(--sp-16);
}
.pillar__desc { color: var(--steel-600); font-size: 16px; line-height: 1.65; }
.section--navy .pillar__desc { color: var(--white-70); }

.principle { display: flex; gap: var(--sp-24); padding-block: var(--sp-24); border-top: 1px solid var(--border); }
.principle__num {
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--gold-500);
  letter-spacing: .1em;
  flex: none;
  padding-top: 3px;
}
.principle__title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.principle__desc { color: var(--steel-600); }

/* -------------------------------------------------------------------------
   14. CTA FINAL
   ------------------------------------------------------------------------- */
.cta-band { text-align: center; }
.cta-band .h2 { margin-bottom: var(--sp-16); }
.cta-band__text { color: var(--white-70); max-width: 620px; margin-inline: auto; }
.cta-band .btn-row { justify-content: center; margin-top: var(--sp-32); }
.cta-band__micro {
  margin-top: var(--sp-24);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--white-55);
}

/* -------------------------------------------------------------------------
   15. FORMULAIRE (spec §11.6)
   ------------------------------------------------------------------------- */
.contact-grid { display: grid; gap: var(--sp-48); }
@media (min-width: 960px) { .contact-grid { grid-template-columns: 42fr 58fr; gap: var(--sp-64); } }

.contact-info dt {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gold-500);
  margin-bottom: 4px;
}
.contact-info dd {
  margin: 0 0 var(--sp-24);
  font-size: 17px;
}
.contact-info dd a {
  color: var(--white);
  text-decoration: none;
  border-bottom: 1px solid var(--border-dark);
  padding-bottom: 2px;
  transition: border-color .2s var(--ease);
}
.contact-info dd a:hover { border-bottom-color: var(--gold-500); }

.form { display: grid; gap: var(--sp-24); }
@media (min-width: 640px) { .form__row { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-24); } }

.field { display: grid; gap: 8px; }

.field__label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--white);
}
.field__label .req { color: var(--gold-500); }

.field__hint { font-size: 12px; color: var(--white-55); }

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, .04);
  border: 1px solid var(--border-dark);
  border-radius: 2px;
  color: var(--white);
  font-size: 16px;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}
.field textarea { min-height: 132px; resize: vertical; line-height: 1.6; }

/* .50 minimum : en dessous, le placeholder passe sous 4,5:1 sur le navy. */
.field input::placeholder,
.field textarea::placeholder { color: rgba(255, 255, 255, .5); }

.field input:hover,
.field select:hover,
.field textarea:hover { border-color: rgba(255, 255, 255, .24); }

.field input:focus,
.field select:focus,
.field textarea:focus {
  background: rgba(255, 255, 255, .07);
  border-color: var(--gold-500);
}

.field select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='none' stroke='%23C8A96A' stroke-width='1.5' d='M1 1.5 6 6.5l5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}
.field select option { background: var(--navy-950); color: var(--white); }

/* État d'erreur : couleur + texte, jamais la couleur seule (a11y §15) */
.field input[aria-invalid="true"],
.field select[aria-invalid="true"],
.field textarea[aria-invalid="true"] { border-color: #E0736B; }

.field__error {
  font-size: 13px;
  color: #F0A9A3;
  display: none;
}
.field__error.is-shown { display: block; }

.form__consent {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 13px;
  line-height: 1.55;
  color: var(--white-70);
}
.form__consent input {
  width: 18px;
  height: 18px;
  min-height: 0;
  margin-top: 3px;
  flex: none;
  accent-color: var(--gold-500);
}
.form__consent a { color: var(--gold-500); }

.form__status {
  display: none;
  padding: 14px 16px;
  border-radius: 2px;
  font-size: 14px;
}
.form__status.is-shown { display: block; }
.form__status--ok { background: rgba(200, 169, 106, .14); border: 1px solid var(--gold-500); color: var(--white); }
.form__status--ko { background: rgba(224, 115, 107, .12); border: 1px solid #E0736B; color: #F5D3D0; }

/* -------------------------------------------------------------------------
   16. FOOTER (spec §12)
   ------------------------------------------------------------------------- */
.site-footer {
  background: var(--navy-950);
  color: var(--white);
  padding-block: var(--sp-48) var(--sp-24);
  border-top: 1px solid var(--border-dark-soft);
}

.footer-grid { display: grid; gap: var(--sp-32); }
@media (min-width: 640px) { .footer-grid { grid-template-columns: repeat(2, 1fr); gap: var(--sp-48) var(--sp-32); } }
@media (min-width: 1080px) { .footer-grid { grid-template-columns: 2.2fr 1.4fr 1fr 1.2fr 1fr; gap: var(--sp-32); } }

.footer-brand img { height: 44px; width: auto; margin-bottom: var(--sp-24); }
.footer-brand p { font-size: 14px; line-height: 1.6; color: var(--white-55); max-width: 300px; }

.footer-col__title {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gold-500);
  margin-bottom: var(--sp-16);
}

.footer-col li + li { margin-top: 10px; }
.footer-col a {
  font-size: 14px;
  color: var(--white-70);
  text-decoration: none;
  transition: color .2s var(--ease);
}
.footer-col a:hover { color: var(--white); text-decoration: underline; text-underline-offset: 3px; }
.footer-col li { font-size: 14px; color: var(--white-70); line-height: 1.5; }

.footer-bottom {
  margin-top: var(--sp-32);
  padding-top: var(--sp-24);
  border-top: 1px solid var(--border-dark-soft);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-16);
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--white-55);
}
.footer-bottom a { color: var(--white-55); text-decoration: none; }
.footer-bottom a:hover { color: var(--white); }
.footer-bottom__links { display: flex; flex-wrap: wrap; gap: var(--sp-24); }

/* -------------------------------------------------------------------------
   17. PAGES LÉGALES
   ------------------------------------------------------------------------- */
.legal { max-width: 760px; }
.legal h2 {
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1.25;
  margin-top: var(--sp-48);
  margin-bottom: var(--sp-16);
}
.legal h2:first-of-type { margin-top: 0; }
.legal p, .legal li { color: var(--steel-600); }
.legal p + p { margin-top: var(--sp-16); }
.legal ul { list-style: disc; padding-left: 22px; margin-top: var(--sp-16); display: grid; gap: 8px; }

/* Valeur à renseigner avant mise en ligne — volontairement très visible.
   Voir README.md § « Variables à renseigner ». */
.placeholder {
  display: inline-block;
  background: rgba(200, 169, 106, .18);
  border-bottom: 1px solid var(--gold-500);
  padding: 1px 5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .88em;
  color: var(--ink-900);
}
.section--navy .placeholder,
.site-footer .placeholder { color: var(--gold-500); background: rgba(200, 169, 106, .12); }

/* -------------------------------------------------------------------------
   18. ANIMATIONS (spec §14)
   ------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }

.reveal-d1 { transition-delay: .08s; }
.reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; }
.reveal-d4 { transition-delay: .32s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  .method__step::before { width: 48px; }
  .btn:hover { transform: none; }
}

/* -------------------------------------------------------------------------
   19. ACCESSIBILITÉ (spec §15)
   ------------------------------------------------------------------------- */
:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 3px;
  border-radius: 1px;
}
.section--navy :focus-visible,
.site-header :focus-visible,
.site-footer :focus-visible { outline-color: var(--gold-400); }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* Cibles tactiles : 44 × 44 px minimum sur pointeur grossier / mobile (spec §15).
   Les liens de listes (footer, légal) sont trop courts par défaut. */
.site-logo { min-height: 44px; }

@media (pointer: coarse), (max-width: 767px) {
  .footer-col a,
  .footer-bottom a,
  .lang-switch a,
  .lang-switch span,
  .contact-info dd a,
  .legal a,
  .prose a:not(.btn):not(.link-arrow) {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
  .footer-col li + li { margin-top: 0; }
  .footer-col li { min-height: 44px; display: flex; align-items: center; }
}

/* -------------------------------------------------------------------------
   20. IMPRESSION
   ------------------------------------------------------------------------- */
@media print {
  .site-header, .mobile-nav, .nav-toggle, .site-footer, .hero__visual { display: none !important; }
  body { color: #000; background: #fff; }
  .section--navy, .hero { background: #fff !important; color: #000 !important; }
  .reveal { opacity: 1; transform: none; }
}