/* ==========================================================================
   ITBA — Feuille de style principale
   Charte : Verts Forêt & Or  ·  Grille 8pt  ·  Calibri / Georgia
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Variables de marque
   -------------------------------------------------------------------------- */
:root {
  /* Couleurs primaires */
  --green-900: #1A4731;   /* Vert Forêt Profond — dominant */
  --green-700: #2D6A4F;   /* Vert Forêt Moyen — accents */
  --gold-700:  #B8860B;   /* Or Foncé — textes accentués */
  --gold-500:  #D4A820;   /* Or Moyen — highlights, CTA */

  /* Nuances */
  --green-100: #D8EDDF;   /* Vert Pâle — fonds de section, badges */
  --green-300: #A8C5B0;   /* Vert Sous-texte — sur fonds verts */
  --ink:       #1C2B22;   /* Noir-Vert — corps de texte */
  --muted:     #4A5E52;   /* Gris-Vert — sous-titres */
  --gold-50:   #FDF6DC;   /* Or Très Pâle — encadrés premium */

  /* Neutres */
  --white:     #FFFFFF;
  --off-white: #F8FAF9;
  --line:      #EEF2EF;   /* Gris-Vert Clair — séparateurs */

  /* Typographie */
  --font-sans:  Calibri, Carlito, "Segoe UI", Lato, system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", Times, serif;

  /* Grille 8pt */
  --s1: 8px;  --s2: 16px; --s3: 24px; --s4: 32px;
  --s5: 40px; --s6: 48px; --s7: 64px; --s8: 80px; --s9: 112px;

  --maxw: 1160px;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(28,43,34,.06), 0 4px 12px rgba(28,43,34,.05);
  --shadow-md: 0 2px 4px rgba(28,43,34,.06), 0 12px 32px rgba(28,43,34,.09);
  --ease: cubic-bezier(.22,.61,.36,1);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--green-700); text-decoration: none; }
a:hover { color: var(--gold-700); }

h1, h2, h3, h4 { margin: 0 0 var(--s2); line-height: 1.2; color: var(--green-900); font-weight: 700; }
h1 { font-size: clamp(1.8rem, 5vw, 3.2rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.4rem, 3.5vw, 2.25rem); letter-spacing: -.015em; }
h3 { font-size: 1.2rem; }
h4 { font-size: 1.02rem; }
p  { margin: 0 0 var(--s2); }
p:last-child { margin-bottom: 0; }

ul { margin: 0 0 var(--s2); padding-left: 1.15em; }
li { margin-bottom: 6px; }

::selection { background: var(--gold-500); color: var(--green-900); }

:focus-visible {
  outline: 3px solid var(--gold-500);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--green-900); color: #fff; padding: 12px 20px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; color: #fff; }

/* --------------------------------------------------------------------------
   3. Utilitaires de mise en page
   -------------------------------------------------------------------------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: clamp(16px, 4vw, 24px); }
.section { padding-block: clamp(40px, 8vw, 104px); }
.section--tight { padding-block: clamp(32px, 5.5vw, 72px); }
.section--pale  { background: var(--off-white); }
.section--mint  { background: var(--green-100); }
.section--dark  { background: var(--green-900); color: #fff; }
.section--dark h2, .section--dark h3, .section--dark h4 { color: #fff; }

.center { text-align: center; }
.measure { max-width: 68ch; }
.measure-center { max-width: 68ch; margin-inline: auto; }

.eyebrow {
  display: inline-block;
  font-size: .76rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--gold-700);
  margin-bottom: var(--s2);
}
.section--dark .eyebrow { color: var(--gold-500); }

.lede { font-size: 1.14rem; color: var(--muted); }
.section--dark .lede { color: var(--green-300); }

.rule {
  width: 56px; height: 3px; border: 0; border-radius: 2px;
  background: linear-gradient(90deg, var(--gold-500), var(--gold-700));
  margin: 0 0 var(--s3);
}
.rule--center { margin-inline: auto; }

.section-head { margin-bottom: clamp(32px, 6vw, 48px); }
.section-head.center .rule { margin-inline: auto; }

/* Grilles */
.grid { display: grid; gap: var(--s3); grid-template-columns: 1fr; }
@media (min-width: 480px)  { .grid { gap: clamp(16px, 4vw, 24px); } }
@media (min-width: 640px)  { .grid--2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 700px)  { .grid--3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .grid--3 { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 640px)  { .grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .grid--4 { grid-template-columns: repeat(4, 1fr); } }

/* --------------------------------------------------------------------------
   4. Boutons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: clamp(11px, 2vw, 13px) clamp(20px, 4vw, 26px);
  border: 2px solid transparent; border-radius: 6px;
  font-family: inherit; font-size: .84rem; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase;
  cursor: pointer; min-height: 44px;
  transition: background-color .22s var(--ease), color .22s var(--ease),
              border-color .22s var(--ease), transform .22s var(--ease);
}
.btn:hover { transform: translateY(-2px); }

.btn--primary { background: var(--green-900); color: #fff; }
.btn--primary:hover { background: var(--green-700); color: #fff; }

.btn--gold { background: var(--gold-500); color: var(--green-900); }
.btn--gold:hover { background: var(--gold-700); color: #fff; }

.btn--ghost { background: transparent; color: var(--green-900); border-color: var(--green-900); }
.btn--ghost:hover { background: var(--green-900); color: #fff; }

.btn--ghost-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn--ghost-light:hover { background: #fff; color: var(--green-900); border-color: #fff; }

.btn-row { display: flex; flex-wrap: wrap; gap: clamp(12px, 2vw, 16px); }
.btn-row--center { justify-content: center; }
@media (max-width: 480px) { .btn-row { flex-direction: column; } .btn-row .btn { width: 100%; justify-content: center; } }

/* Lien fléché */
.arrow-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: .95rem; color: var(--green-700);
}
.arrow-link::after { content: "→"; transition: transform .22s var(--ease); }
.arrow-link:hover::after { transform: translateX(5px); }

/* --------------------------------------------------------------------------
   5. En-tête & navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.94);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header.is-scrolled { box-shadow: var(--shadow-sm); }

.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: clamp(12px, 3vw, 24px); min-height: clamp(64px, 12vw, 76px);
}

/* ---- Bloc-marque ITBA (symbole « libellule » + logotype) ------------------ */
.logo { display: inline-flex; align-items: center; gap: 12px; flex: none; }
.logo__symbol { height: 46px; width: auto; display: block; flex: none; }
.logo__rule { width: 1px; align-self: stretch; margin-block: 3px; background: var(--line); flex: none; }
.logo__text { display: flex; flex-direction: column; gap: 3px; }
.logo__mark {
  font-size: 1.32rem; font-weight: 700; letter-spacing: .18em;
  color: var(--green-900); line-height: 1;
}
.logo__sign {
  font-size: .56rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--muted); line-height: 1;
}
a.logo { transition: opacity .2s var(--ease); }
a.logo:hover { opacity: .78; }

/* Version sur fond vert profond (pied de page) */
.logo--clair .logo__mark { color: #fff; }
.logo--clair .logo__sign { color: var(--gold-500); }
.logo--clair .logo__rule { background: rgba(255,255,255,.22); }

@media (max-width: 420px) {
  .logo__symbol { height: 36px; }
  .logo__sign { display: none; }
}

.nav { display: flex; align-items: center; gap: var(--s1); }
.nav a {
  display: block; padding: 9px 14px; border-radius: 6px;
  font-size: .95rem; font-weight: 600; color: var(--ink);
  transition: background-color .2s var(--ease), color .2s var(--ease);
}
.nav a:hover { background: var(--green-100); color: var(--green-900); }
.nav a[aria-current="page"] { color: var(--green-900); box-shadow: inset 0 -2px 0 var(--gold-500); }

.header-cta { margin-left: var(--s2); }

.nav-toggle {
  display: none;
  width: 46px; height: 46px; padding: 0;
  background: transparent; border: 1px solid var(--line); border-radius: 8px;
  cursor: pointer; align-items: center; justify-content: center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block; width: 20px; height: 2px; border-radius: 2px;
  background: var(--green-900); transition: transform .25s var(--ease), opacity .2s var(--ease);
}
.nav-toggle span { position: relative; }
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after  { position: absolute; top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after  { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 1000px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: fixed; inset: 76px 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: var(--s2) var(--s3) var(--s4);
    box-shadow: var(--shadow-md);
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: opacity .22s var(--ease), transform .22s var(--ease);
    max-height: calc(100vh - 76px); overflow-y: auto;
  }
  .nav.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav a { padding: 14px 12px; font-size: 1.05rem; border-bottom: 1px solid var(--line); border-radius: 0; }
  .nav a[aria-current="page"] { box-shadow: none; color: var(--gold-700); }
  .header-cta { margin: var(--s3) auto 0; align-self: center; justify-content: center; }
}

/* --------------------------------------------------------------------------
   6. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative; overflow: hidden;
  background: var(--green-900);
  color: #fff;
  padding-block: clamp(72px, 11vw, 140px);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 90% at 82% 12%, rgba(212,168,32,.16), transparent 62%),
    radial-gradient(ellipse 80% 80% at 8% 96%, rgba(45,106,79,.75), transparent 60%);
}
.hero > .wrap { position: relative; }

/* Symbole de marque en accompagnement de la bannière (fond vert profond autorisé) */
.hero__symbole { display: none; }
@media (min-width: 1080px) {
  .hero__symbole {
    display: block; position: absolute;
    right: 7%; top: 50%; transform: translateY(-50%);
    width: 300px; pointer-events: none;
  }
  .hero__symbole svg { width: 100%; height: auto; display: block; }
}
.hero h1 { color: #fff; max-width: 17ch; word-break: break-word; }
.hero .lede { color: var(--green-300); max-width: 60ch; font-size: clamp(1rem, 2vw, 1.2rem); }
.hero .eyebrow { color: var(--gold-500); }
.hero .btn-row { margin-top: clamp(24px, 5vw, 40px); }

.hero--page { padding-block: clamp(56px, 8vw, 96px); }
.hero--page h1 { max-width: 22ch; }

/* Fil d'Ariane */
.crumbs { font-size: .85rem; color: var(--green-300); margin-bottom: var(--s2); }
.crumbs a { color: var(--green-300); text-decoration: underline; text-underline-offset: 3px; }
.crumbs a:hover { color: var(--gold-500); }

/* Bandeau de chiffres */
.stats { display: grid; gap: clamp(16px, 4vw, 24px); margin-top: var(--s7); grid-template-columns: 1fr; }
@media (min-width: 640px) { .stats { grid-template-columns: repeat(3, 1fr); } }
.stat { border-left: 3px solid var(--gold-500); padding-left: var(--s3); }
.stat__num { font-size: 2.4rem; font-weight: 700; color: #fff; line-height: 1; margin-bottom: 6px; }
.stat__label { font-size: .95rem; color: var(--green-300); }

/* --------------------------------------------------------------------------
   7. Cartes
   -------------------------------------------------------------------------- */
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(16px, 4vw, 32px);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
}
.card--link:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--green-100); }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); font-size: .98rem; }
.card__foot { margin-top: var(--s3); }

.card--dark { background: var(--green-900); border-color: var(--green-700); color: var(--green-300); }
.card--dark h3, .card--dark h4 { color: #fff; }
.card--dark p { color: var(--green-300); }
.card--dark .arrow-link { color: var(--gold-500); }
/* Sur fond vert foncé, les textes secondaires doivent repasser en clair */
.card--dark .check-list li { color: var(--green-300); }
.card--dark .eyebrow { color: var(--gold-500); }
.card--dark a:not(.btn) { color: var(--gold-500); }

.card--gold { background: var(--gold-50); border-color: #F0E4B8; }

/* Icône ronde */
.icon {
  width: 52px; height: 52px; border-radius: 14px;
  display: grid; place-items: center;
  background: var(--green-100); color: var(--green-900);
  margin-bottom: var(--s3);
  flex: none;
}
.icon svg { width: 26px; height: 26px; fill: currentColor; }
.icon--gold { background: var(--gold-50); color: var(--gold-700); }
.icon--dark { background: rgba(255,255,255,.1); color: var(--gold-500); }

/* Carte service (accueil) */
.service-card { display: flex; flex-direction: column; height: 100%; }
.service-card .badge { margin-bottom: var(--s2); }
.service-card p { flex-grow: 1; }
.service-card ul { font-size: .95rem; color: var(--muted); margin-top: var(--s2); }

.badge {
  display: inline-block; padding: 5px 12px; border-radius: 999px;
  background: var(--green-100); color: var(--green-900);
  font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
}
.badge--gold { background: var(--gold-50); color: var(--gold-700); }
.badge--light { background: rgba(255,255,255,.12); color: var(--gold-500); }

/* --------------------------------------------------------------------------
   8. Blocs de contenu
   -------------------------------------------------------------------------- */
/* Deux colonnes texte + encadré */
.split { display: grid; gap: clamp(24px, 5vw, 64px); align-items: start; grid-template-columns: 1fr; }
@media (min-width: 900px) { .split { grid-template-columns: 1.15fr .85fr; gap: var(--s7); } }

/* Liste à puces cochées */
.check-list { list-style: none; padding: 0; margin: 0; }
.check-list li {
  position: relative; padding-left: 30px; margin-bottom: 12px;
  color: var(--muted); font-size: 1rem;
}
.check-list li::before {
  content: ""; position: absolute; left: 0; top: .55em;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--gold-500);
}
.section--dark .check-list li { color: var(--green-300); }

/* Bloc de prestation détaillée */
.offer { border-top: 1px solid var(--line); padding-top: clamp(16px, 4vw, 32px); margin-top: clamp(16px, 4vw, 32px); }
.offer:first-of-type { border-top: 0; padding-top: 0; margin-top: 0; }
.offer__head { display: flex; align-items: flex-start; gap: clamp(12px, 3vw, 24px); margin-bottom: var(--s2); flex-wrap: wrap; }
.offer__head .icon { margin-bottom: 0; }
.offer h3 { margin-bottom: 4px; }
.offer__sub { color: var(--gold-700); font-size: .9rem; font-weight: 700; letter-spacing: .04em; }

/* Citation */
.quote {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.4vw, 1.75rem);
  line-height: 1.45; font-style: italic;
  color: var(--green-900);
  border-left: 3px solid var(--gold-500);
  padding-left: var(--s4);
  margin: 0;
}
.section--dark .quote { color: #fff; border-color: var(--gold-500); }
.quote cite { display: block; margin-top: var(--s3); font-family: var(--font-sans); font-style: normal; font-size: .85rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--gold-700); }
.section--dark .quote cite { color: var(--gold-500); }

/* Étapes numérotées */
.steps { counter-reset: step; display: grid; gap: var(--s3); grid-template-columns: 1fr; }
@media (min-width: 480px) { .steps { gap: clamp(16px, 3vw, 24px); } }
@media (min-width: 760px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .steps--5 { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1200px) { .steps--5 { grid-template-columns: repeat(5, 1fr); } }
.step { counter-increment: step; padding-top: var(--s3); border-top: 2px solid var(--green-100); }
.step::before {
  content: "0" counter(step);
  display: block; font-size: .85rem; font-weight: 700; letter-spacing: .12em;
  color: var(--gold-700); margin-bottom: var(--s1);
}
.step h4 { margin-bottom: 6px; }
.step p { font-size: .95rem; color: var(--muted); }

/* Parcours / frise verticale */
.timeline { list-style: none; margin: 0; padding: 0; position: relative; }
.timeline::before {
  content: ""; position: absolute; left: clamp(5px, 2vw, 7px); top: 8px; bottom: 8px;
  width: 2px; background: var(--green-100);
}
.timeline li { position: relative; padding-left: clamp(28px, 6vw, 36px); padding-bottom: clamp(24px, 4vw, 32px); margin: 0; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: ""; position: absolute; left: 0; top: 6px;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--white); border: 3px solid var(--gold-500);
}
.timeline .tl-date {
  display: block; font-size: .78rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--gold-700); margin-bottom: 4px;
}
.timeline h4 { margin-bottom: 4px; }
.timeline .tl-org { color: var(--green-700); font-weight: 700; font-size: .95rem; }
.timeline p { font-size: .97rem; color: var(--muted); margin-top: 8px; }

/* Bloc portrait / fondateur */
.founder { display: grid; gap: clamp(24px, 5vw, 64px); align-items: start; grid-template-columns: 1fr; }
@media (min-width: 900px) { .founder { grid-template-columns: .85fr 1.15fr; gap: var(--s7); } }
.founder__id {
  background: var(--green-900); color: var(--green-300);
  border-radius: var(--radius-lg); padding: var(--s5) var(--s4);
  text-align: center;
}
.founder__initials {
  width: 108px; height: 108px; margin: 0 auto var(--s3);
  border-radius: 50%; display: grid; place-items: center;
  background: var(--green-700); border: 3px solid var(--gold-500);
  font-size: 2.1rem; font-weight: 700; letter-spacing: .06em; color: #fff;
}
.founder__name { color: #fff; font-size: 1.35rem; font-weight: 700; margin-bottom: 4px; }
.founder__role { color: var(--gold-500); font-size: .8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.founder__meta { margin-top: var(--s3); padding-top: var(--s3); border-top: 1px solid rgba(255,255,255,.14); font-size: .93rem; }
.founder__meta li { list-style: none; margin-bottom: 8px; }
.founder__meta ul { padding: 0; margin: 0; }

/* Tableau simple */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .97rem; min-width: 560px; }
th, td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--off-white); color: var(--green-900); font-weight: 700; }
td { color: var(--muted); }

/* FAQ */
.faq details {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: var(--s3); margin-bottom: var(--s2); background: #fff;
}
.faq details[open] { border-color: var(--green-100); box-shadow: var(--shadow-sm); }
.faq summary {
  cursor: pointer; font-weight: 700; color: var(--green-900); font-size: 1.05rem;
  list-style: none; display: flex; justify-content: space-between; gap: var(--s2); align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.5rem; color: var(--gold-700); line-height: 1; flex: none; }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin-top: var(--s2); color: var(--muted); }

/* --------------------------------------------------------------------------
   9. Bandeau d'appel à l'action
   -------------------------------------------------------------------------- */
.cta-band {
  background: var(--green-900);
  color: #fff;
  position: relative; overflow: hidden;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 100% at 88% 50%, rgba(212,168,32,.18), transparent 62%);
}
.cta-band > .wrap { position: relative; }
.cta-band h2 { color: #fff; }
.cta-band p { color: var(--green-300); }

/* --------------------------------------------------------------------------
   10. Contact
   -------------------------------------------------------------------------- */
.contact-list { list-style: none; padding: 0; margin: 0; display: grid; gap: clamp(16px, 4vw, 24px); grid-template-columns: 1fr; }
@media (min-width: 640px) { .contact-list { grid-template-columns: repeat(2, 1fr); } }
.contact-item { display: flex; gap: var(--s3); align-items: flex-start; }
.contact-item .icon { width: 46px; height: 46px; margin-bottom: 0; }
.contact-item .icon svg { width: 22px; height: 22px; }
.contact-item__label { font-size: .78rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 2px; }
.contact-item__value { font-size: 1.12rem; font-weight: 700; color: var(--green-900); }
.contact-item__value a { color: inherit; }
.contact-item__value a:hover { color: var(--gold-700); }
.contact-item__note { font-size: .9rem; color: var(--muted); }

.social-row { display: flex; flex-wrap: wrap; gap: var(--s2); }
.social-btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 11px 18px; border-radius: 8px;
  border: 1px solid var(--line); background: #fff;
  font-weight: 600; font-size: .95rem; color: var(--green-900);
  transition: border-color .2s var(--ease), background-color .2s var(--ease), transform .2s var(--ease);
}
.social-btn svg { width: 18px; height: 18px; fill: currentColor; }
.social-btn:hover { border-color: var(--green-700); background: var(--green-100); color: var(--green-900); transform: translateY(-2px); }

/* --------------------------------------------------------------------------
   11. Pied de page
   -------------------------------------------------------------------------- */
.site-footer { background: var(--green-900); color: var(--green-300); padding-block: var(--s7) var(--s4); font-size: .95rem; }
.footer-grid { display: grid; gap: clamp(24px, 5vw, 48px); grid-template-columns: 1fr; }
@media (min-width: 800px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; gap: var(--s7); } }

.site-footer h4 { color: #fff; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; margin-bottom: var(--s2); }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 10px; }
.site-footer a { color: var(--green-300); }
.site-footer a:hover { color: var(--gold-500); }
.footer-tag { font-family: var(--font-serif); font-style: italic; color: var(--gold-500); margin-top: var(--s2); }
.footer-bottom {
  margin-top: var(--s6); padding-top: var(--s3);
  border-top: 1px solid rgba(255,255,255,.12);
  display: flex; flex-wrap: wrap; gap: clamp(12px, 3vw, 16px) clamp(16px, 5vw, 32px);
  justify-content: space-between; align-items: center;
  font-size: .85rem;
}
@media (max-width: 640px) { .footer-bottom { flex-direction: column; align-items: flex-start; gap: 12px; } }

/* --------------------------------------------------------------------------
   12. Apparition au défilement
   -------------------------------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* --------------------------------------------------------------------------
   13. Page légale / texte long
   -------------------------------------------------------------------------- */
.prose h2 { margin-top: var(--s6); font-size: 1.4rem; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin-top: var(--s4); font-size: 1.08rem; }
.prose p, .prose li { color: var(--muted); }
.todo {
  background: var(--gold-50); border: 1px dashed var(--gold-700); border-radius: 6px;
  padding: 2px 8px; color: var(--gold-700); font-weight: 700; font-size: .92rem;
}

/* --------------------------------------------------------------------------
   14. Optimisations pour très petits écrans (mobile)
   -------------------------------------------------------------------------- */
@media (max-width: 480px) {
  body { font-size: 16px; }
  .logo__symbol { height: 40px; }
  .card { padding: clamp(16px, 3vw, 24px); }
  .stats { gap: 12px; }
  .check-list li { padding-left: 24px; }
  .check-list li::before { width: 6px; height: 6px; }
  .contact-item .icon { width: 40px; height: 40px; }
  .contact-item .icon svg { width: 20px; height: 20px; }
  a, button, .btn { min-height: 44px; min-width: 44px; }
  .nav a { padding: 12px 10px; font-size: .95rem; }
}

@media (max-width: 600px) {
  table { font-size: .85rem; }
  th, td { padding: 10px 12px; }
  .measure-center { max-width: 100%; }
}

/* --------------------------------------------------------------------------
   15. Impression
   -------------------------------------------------------------------------- */
@media print {
  .site-header, .nav-toggle, .cta-band, .btn { display: none !important; }
  body { color: #000; font-size: 12pt; }
  .hero { background: none; color: #000; }
  .hero h1, .hero .lede { color: #000; }
}