/* ===================================================================
   LSK GROUPE — Charte graphique
   Bleu foncé #1060A0 (dominante) · Bleu clair #4890D0 (secondaire)
   Gris neutre #555566 · Blanc — motif hexagonal (logo)
   =================================================================== */

:root {
  --bleu: #1060A0;
  --bleu-fonce: #0B4878;
  --bleu-nuit: #072A44;
  --bleu-clair: #4890D0;
  --bleu-pale: #EAF3FB;
  --bleu-tint: #F4F9FD;
  --gris: #555566;
  --gris-clair: #8A8A99;
  --blanc: #FFFFFF;
  --degrade: linear-gradient(120deg, #1060A0 0%, #4890D0 100%);
  --radius: 22px;
  --shadow: 0 12px 34px rgba(16, 96, 160, 0.10);
  --shadow-hover: 0 24px 54px rgba(16, 96, 160, 0.22);
  --font: 'Montserrat', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --hexa: polygon(25% 0%, 75% 0%, 100% 50%, 75% 100%, 25% 100%, 0% 50%);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--gris);
  background: var(--blanc);
  line-height: 1.68;
  font-size: 16px;
  overflow-x: hidden;
}

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

a { color: var(--bleu); text-decoration: none; }

::selection { background: var(--bleu-clair); color: #fff; }

.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
.topbar {
  background: var(--bleu-nuit);
  color: #cfe3f5;
  font-size: 13px;
  padding: 7px 0;
}
.topbar .container { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.topbar a { color: #fff; font-weight: 600; }

header.site {
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 20px rgba(7, 42, 68, 0.10);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.logo img { height: 52px; width: auto; transition: transform .25s; }
.logo:hover img { transform: scale(1.04); }

nav.main ul { display: flex; gap: 4px; list-style: none; align-items: center; }
nav.main a {
  display: block;
  padding: 10px 14px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 14.5px;
  color: var(--bleu-fonce);
  position: relative;
  transition: background .2s, color .2s, transform .2s;
}
nav.main a:hover { background: var(--bleu-pale); color: var(--bleu); transform: translateY(-1px); }
nav.main a.active { background: var(--degrade); color: #fff; box-shadow: 0 6px 16px rgba(16,96,160,.35); }
nav.main a.cta {
  background: var(--bleu-clair);
  color: #fff;
  margin-left: 10px;
  box-shadow: 0 6px 16px rgba(72,144,208,.4);
}
nav.main a.cta:hover { background: var(--bleu); transform: translateY(-2px); }

.burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 28px;
  color: var(--bleu);
  line-height: 1;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(72,144,208,.55), transparent 60%),
    radial-gradient(700px 420px at -10% 110%, rgba(72,144,208,.35), transparent 55%),
    linear-gradient(135deg, var(--bleu-nuit) 0%, var(--bleu) 62%, var(--bleu-clair) 125%);
  color: #fff;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 56px), 0 100%);
  padding-bottom: 34px;
}
.hero .container { position: relative; z-index: 2; padding-top: 96px; padding-bottom: 110px; max-width: 920px; text-align: center; }
.hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
  text-shadow: 0 4px 30px rgba(7,42,68,.35);
}
.hero p.lead {
  font-size: clamp(16px, 2vw, 20px);
  color: #dcebf8;
  max-width: 700px;
  margin: 0 auto 36px;
}
.hero .hexes {
  position: absolute;
  inset: -40px 0 0 0;
  z-index: 1;
  opacity: .14;
  pointer-events: none;
  animation: derive 26s ease-in-out infinite alternate;
}
@keyframes derive {
  from { transform: translateY(-12px) rotate(-1deg); }
  to   { transform: translateY(18px) rotate(1.5deg); }
}
/* hexagones flottants supplémentaires */
.hero::before, .hero::after {
  content: "";
  position: absolute;
  clip-path: var(--hexa);
  background: linear-gradient(140deg, rgba(255,255,255,.16), rgba(255,255,255,.02));
  z-index: 1;
  pointer-events: none;
}
.hero::before {
  width: 190px; height: 170px;
  top: 12%; left: -60px;
  animation: flotte 9s ease-in-out infinite alternate;
}
.hero::after {
  width: 260px; height: 230px;
  bottom: -8%; right: -70px;
  animation: flotte 12s ease-in-out infinite alternate-reverse;
}
@keyframes flotte {
  from { transform: translateY(-14px) rotate(6deg); }
  to   { transform: translateY(16px) rotate(-4deg); }
}

.hero.sub { clip-path: polygon(0 0, 100% 0, 100% calc(100% - 40px), 0 100%); padding-bottom: 20px; }
.hero.sub .container { padding-top: 70px; padding-bottom: 84px; }
.breadcrumb { font-size: 13px; color: #b8d4ec; margin-bottom: 14px; letter-spacing: .04em; }
.breadcrumb a { color: #fff; }

/* ---------- Boutons ---------- */
.btn {
  display: inline-block;
  padding: 15px 34px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: .01em;
  transition: transform .18s, box-shadow .25s, background .25s, color .25s;
}
.btn-blanc { background: #fff; color: var(--bleu); box-shadow: 0 10px 28px rgba(7,42,68,.25); }
.btn-blanc:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 16px 38px rgba(7,42,68,.35); }
.btn-bleu { background: var(--degrade); color: #fff; box-shadow: 0 10px 26px rgba(16,96,160,.35); }
.btn-bleu:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 16px 36px rgba(16,96,160,.45); }
.btn-contour { border: 2px solid rgba(255,255,255,.85); color: #fff; }
.btn-contour:hover { background: rgba(255,255,255,.16); transform: translateY(-3px); }
.btn-row { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------- Sections ---------- */
section.bloc { padding: 84px 0; position: relative; }
section.bloc.tint {
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='104' viewBox='0 0 120 104'%3E%3Cpolygon points='60,4 112,30 112,78 60,100 8,78 8,30' fill='none' stroke='%231060A0' stroke-opacity='0.05' stroke-width='2'/%3E%3C/svg%3E") repeat,
    var(--bleu-tint);
}
section.bloc.fonce {
  background:
    radial-gradient(800px 400px at 90% 0%, rgba(72,144,208,.35), transparent 60%),
    linear-gradient(120deg, var(--bleu-nuit), var(--bleu-fonce) 70%);
  color: #d9e9f7;
}
section.bloc.fonce h2 { color: #fff; }

.entete-section { text-align: center; max-width: 740px; margin: 0 auto 54px; }
.surtitre {
  display: inline-block;
  background: var(--bleu-pale);
  color: var(--bleu);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
  padding: 8px 20px;
  border-radius: 999px;
  margin-bottom: 16px;
  border: 1.5px solid rgba(16,96,160,.18);
}
section.bloc.fonce .surtitre { background: rgba(255,255,255,.12); color: #cfe3f5; border-color: rgba(255,255,255,.2); }
h2 {
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 800;
  color: var(--bleu-fonce);
  line-height: 1.16;
  letter-spacing: -0.015em;
}
h3 { color: var(--bleu-fonce); font-weight: 800; }
.entete-section p { margin-top: 16px; font-size: 17px; }

/* ---------- Grilles / cartes ---------- */
.grille { display: grid; gap: 28px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }

.carte {
  background: #fff;
  border-radius: var(--radius);
  padding: 34px 28px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(16,96,160,.07);
  position: relative;
  overflow: hidden;
  transition: transform .25s ease, box-shadow .3s ease;
}
.carte::after {
  content: "";
  position: absolute;
  width: 150px; height: 132px;
  right: -60px; bottom: -66px;
  clip-path: var(--hexa);
  background: var(--bleu-pale);
  opacity: 0;
  transition: opacity .35s, transform .35s;
  transform: rotate(14deg);
  pointer-events: none;
}
.carte:hover { transform: translateY(-7px); box-shadow: var(--shadow-hover); }
.carte:hover::after { opacity: .55; transform: rotate(4deg) translate(-8px, -8px); }
.carte > * { position: relative; z-index: 1; }
.carte h3 { font-size: 19px; margin-bottom: 10px; }
.carte p { font-size: 14.5px; }
.carte .ico {
  width: 66px; height: 60px;
  clip-path: var(--hexa);
  background: linear-gradient(140deg, var(--bleu-pale), #D9EAF8);
  display: flex; align-items: center; justify-content: center;
  font-size: 27px;
  margin-bottom: 20px;
}
.carte .ico img { width: 34px; height: 34px; display: block; }
section.bloc.fonce .carte .ico { background: #fff; }

/* Chiffres clés */
.chiffres { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; text-align: center; }
.chiffre {
  padding: 26px 12px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, #fff, var(--bleu-tint));
  border: 1px solid rgba(16,96,160,.10);
  box-shadow: var(--shadow);
  transition: transform .25s;
}
.chiffre:hover { transform: translateY(-5px); }
.chiffre .num {
  font-size: clamp(40px, 4.6vw, 58px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  background: var(--degrade);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.chiffre .lbl { font-size: 13.5px; font-weight: 700; color: var(--gris); margin-top: 10px; }
section.bloc.fonce .chiffre { background: rgba(255,255,255,.07); border-color: rgba(255,255,255,.14); box-shadow: none; }
section.bloc.fonce .chiffre .num { background: linear-gradient(120deg, #fff, #9cc6ea); -webkit-background-clip: text; background-clip: text; }
section.bloc.fonce .chiffre .lbl { color: #b8d4ec; }

/* Marques */
.marque {
  display: flex;
  flex-direction: column;
  border-top: 6px solid var(--accent, var(--bleu));
}
.marque .tag {
  align-self: flex-start;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent, var(--bleu));
  background: color-mix(in srgb, var(--accent, var(--bleu)) 12%, white);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}
.marque h3 { font-size: 21px; }
.marque .logo-m {
  height: 48px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  object-position: left center;
  margin-bottom: 14px;
  align-self: flex-start;
  transition: transform .25s;
}
.marque:hover .logo-m { transform: scale(1.05); transform-origin: left center; }
.marque .lien { margin-top: auto; padding-top: 18px; font-weight: 800; font-size: 14px; transition: letter-spacing .2s; }
.marque .lien:hover { letter-spacing: .02em; }

/* Listes à puces stylées */
ul.coche { list-style: none; }
ul.coche li {
  padding-left: 34px;
  position: relative;
  margin-bottom: 11px;
  font-size: 15px;
}
ul.coche li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 1px;
  width: 22px; height: 20px;
  clip-path: var(--hexa);
  background: var(--degrade);
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}

/* Deux colonnes texte/visuel */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.duo .visuel {
  border-radius: 26px;
  overflow: hidden;
  box-shadow: var(--shadow-hover);
  background: linear-gradient(150deg, var(--bleu-pale), #fff 70%);
  border: 1px solid rgba(16,96,160,.10);
  padding: 46px 40px;
  text-align: center;
  position: relative;
}
.duo .visuel::before {
  content: "";
  position: absolute;
  width: 120px; height: 106px;
  clip-path: var(--hexa);
  background: rgba(72,144,208,.10);
  top: -34px; right: -34px;
  pointer-events: none;
}

/* Bandeau CTA */
.cta-bandeau {
  background:
    radial-gradient(500px 300px at 12% 120%, rgba(255,255,255,.16), transparent 60%),
    linear-gradient(120deg, var(--bleu) 0%, var(--bleu-clair) 100%);
  border-radius: 30px;
  padding: 62px 44px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(16,96,160,.35);
}
.cta-bandeau::before, .cta-bandeau::after {
  content: "";
  position: absolute;
  clip-path: var(--hexa);
  background: rgba(255,255,255,.10);
  pointer-events: none;
}
.cta-bandeau::before { width: 200px; height: 176px; top: -70px; right: -50px; transform: rotate(12deg); }
.cta-bandeau::after { width: 140px; height: 124px; bottom: -50px; left: -36px; transform: rotate(-10deg); }
.cta-bandeau h2 { color: #fff; margin-bottom: 14px; position: relative; z-index: 1; }
.cta-bandeau p { color: #e2effa; max-width: 660px; margin: 0 auto 30px; position: relative; z-index: 1; }
.cta-bandeau .btn-row { position: relative; z-index: 1; }

/* Timeline */
.timeline { position: relative; margin-left: 14px; padding-left: 40px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 0; top: 6px; bottom: 6px;
  width: 4px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--bleu), var(--bleu-clair));
}
.timeline .etape {
  position: relative;
  margin-bottom: 26px;
  background: #fff;
  border: 1px solid rgba(16,96,160,.10);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 18px 22px;
  transition: transform .25s, box-shadow .3s;
}
.timeline .etape:hover { transform: translateX(6px); box-shadow: var(--shadow-hover); }
.timeline .etape::before {
  content: "";
  position: absolute;
  left: -49px;
  top: 22px;
  width: 22px; height: 20px;
  clip-path: var(--hexa);
  background: var(--degrade);
  box-shadow: 0 0 0 5px var(--bleu-pale);
}
.timeline .annee { font-weight: 800; color: var(--bleu); font-size: 18px; letter-spacing: -0.01em; }
.timeline .etape p { font-size: 14.5px; }

/* Tableaux */
table.data { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); font-size: 14.5px; }
table.data th { background: var(--degrade); color: #fff; text-align: left; padding: 15px 18px; font-size: 13.5px; letter-spacing: .05em; text-transform: uppercase; }
table.data td { padding: 14px 18px; border-bottom: 1px solid #edf3f9; vertical-align: top; }
table.data tr:last-child td { border-bottom: none; }
table.data tr:hover td { background: var(--bleu-tint); }

/* Carte de France des implantations */
.carte-france { max-width: 580px; margin: 0 auto 38px; }
.carte-france svg { width: 100%; height: auto; display: block; filter: drop-shadow(0 14px 30px rgba(16,96,160,.16)); }
.pt-ville { fill: var(--bleu); cursor: pointer; transition: fill .2s; }
.pt-ville:hover { fill: var(--bleu-clair); }
.pt-hub { fill: var(--bleu-clair); stroke: #fff; stroke-width: 3; cursor: pointer; }
.pt-siege { fill: var(--bleu-fonce); stroke: #fff; stroke-width: 3; cursor: pointer; }
.pt-siege-halo { fill: none; stroke: var(--bleu-clair); stroke-width: 3; opacity: .8; animation: halo 2.4s ease-out infinite; transform-origin: center; transform-box: fill-box; }
@keyframes halo {
  0% { transform: scale(.6); opacity: .9; }
  100% { transform: scale(1.8); opacity: 0; }
}
.carte-france a { cursor: pointer; }
.carte-france a:hover .pt-ville { fill: var(--bleu-clair); r: 10; }
.carte-france a:hover .pt-hub, .carte-france a:hover .pt-siege { r: 12; }
.tip-carte {
  position: absolute;
  z-index: 300;
  background: var(--bleu-fonce);
  color: #fff;
  font-family: var(--font);
  font-size: 13.5px;
  font-weight: 700;
  padding: 7px 14px;
  border-radius: 999px;
  pointer-events: none;
  white-space: nowrap;
  opacity: 0;
  transition: opacity .15s;
  box-shadow: 0 8px 20px rgba(7,42,68,.3);
}
@media (prefers-reduced-motion: reduce) { .pt-siege-halo { animation: none; opacity: .5; } }

/* Badges implantations */
.villes { display: flex; flex-wrap: wrap; gap: 11px; }
.villes span, .villes a {
  background: #fff;
  border: 1.5px solid rgba(16,96,160,.18);
  color: var(--bleu-fonce);
  font-weight: 700;
  font-size: 13.5px;
  padding: 9px 18px;
  border-radius: 999px;
  transition: background .25s, color .25s, transform .2s, box-shadow .25s;
  cursor: default;
}
.villes span:hover, .villes a:hover {
  background: var(--degrade);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 10px 22px rgba(16,96,160,.3);
}
.villes a { cursor: pointer; }

/* Formulaire */
form.contact { display: grid; gap: 18px; }
form.contact .l2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
form.contact label { font-weight: 800; font-size: 13px; color: var(--bleu-fonce); display: block; margin-bottom: 7px; letter-spacing: .03em; }
form.contact input, form.contact select, form.contact textarea {
  width: 100%;
  padding: 14px 17px;
  border: 1.5px solid #d7e5f2;
  border-radius: 14px;
  font-family: var(--font);
  font-size: 15px;
  color: var(--gris);
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
form.contact input[type="file"] { padding: 10px 12px; background: var(--bleu-tint); cursor: pointer; }
form.contact input[type="file"]::file-selector-button {
  border: none;
  background: var(--degrade);
  color: #fff;
  font-family: var(--font);
  font-weight: 700;
  font-size: 13px;
  padding: 8px 16px;
  border-radius: 999px;
  margin-right: 12px;
  cursor: pointer;
}
form.contact input:focus, form.contact select:focus, form.contact textarea:focus {
  outline: none;
  border-color: var(--bleu-clair);
  box-shadow: 0 0 0 4px rgba(72, 144, 208, .18);
}
form.contact .btn { border: none; cursor: pointer; font-family: var(--font); }

/* Encadré note */
.note {
  background: linear-gradient(120deg, var(--bleu-pale), #fff);
  border: 1.5px solid rgba(16,96,160,.16);
  border-radius: 18px;
  padding: 22px 26px;
  font-size: 14.5px;
  box-shadow: var(--shadow);
}

/* ---------- Footer ---------- */
footer.site {
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='122' viewBox='0 0 140 122'%3E%3Cpolygon points='70,6 128,35 128,89 70,116 12,89 12,35' fill='none' stroke='%23ffffff' stroke-opacity='0.045' stroke-width='2'/%3E%3C/svg%3E") repeat,
    linear-gradient(160deg, var(--bleu-nuit), #05202f);
  color: #b8d4ec;
  padding: 64px 0 26px;
  font-size: 14px;
}
footer.site .cols {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 44px;
}
footer.site h4 {
  color: #fff;
  font-size: 13.5px;
  text-transform: uppercase;
  letter-spacing: .14em;
  margin-bottom: 18px;
}
footer.site ul { list-style: none; }
footer.site li { margin-bottom: 10px; }
footer.site a { color: #b8d4ec; transition: color .2s, padding-left .2s; }
footer.site a:hover { color: #fff; padding-left: 3px; }
footer.site .logo-chip {
  background: #fff;
  border-radius: 14px;
  padding: 10px 16px;
  display: inline-block;
  margin-bottom: 18px;
  box-shadow: 0 10px 26px rgba(0,0,0,.3);
}
footer.site .logo-chip img { height: 40px; }
footer.site .legal {
  border-top: 1px solid rgba(255,255,255,.14);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: #7fa8c9;
}

/* ---------- Apparition au scroll ---------- */
.rev { opacity: 0; transform: translateY(26px); transition: opacity .65s ease, transform .65s ease; }
.rev.vu { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .rev { opacity: 1; transform: none; transition: none; }
  .hero .hexes, .hero::before, .hero::after { animation: none; }
  * { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .g3, .g4 { grid-template-columns: repeat(2, 1fr); }
  .chiffres { grid-template-columns: repeat(2, 1fr); }
  .duo { grid-template-columns: 1fr; gap: 38px; }
  footer.site .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .burger { display: block; }
  nav.main {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: #fff;
    box-shadow: 0 18px 30px rgba(7,42,68,.16);
    padding: 12px 20px 20px;
  }
  nav.main.open { display: block; }
  nav.main ul { flex-direction: column; align-items: stretch; gap: 4px; }
  nav.main a.cta { margin-left: 0; text-align: center; }
  .g2, .g3, .g4 { grid-template-columns: 1fr; }
  form.contact .l2 { grid-template-columns: 1fr; }
  .topbar { display: none; }
  .hero { clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), 0 100%); }
}