:root {
  --rouge: #ce1126;
  --jaune: #fcd116;
  --vert: #009460;
  --encre: #14221b;
  --texte: #2b3a33;
  --doux: #5d6b64;
  --fond: #f7f9f6;
  --carte: #ffffff;
  --bord: #e2e8e3;
  --rayon: 16px;
  --ombre: 0 6px 24px rgba(20, 34, 27, 0.08);
  --max: 1120px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  color: var(--texte);
  background: var(--fond);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: min(var(--max), 92%); margin-inline: auto; }

.bande {
  height: 6px;
  background: linear-gradient(90deg, var(--rouge) 33.3%, var(--jaune) 33.3% 66.6%, var(--vert) 66.6%);
}

.entete {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--bord);
}
.entete .container { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.25rem; color: var(--encre); }
.logo-pastille {
  width: 38px; height: 38px; border-radius: 12px; display: grid; place-items: center;
  color: #fff; font-weight: 800; background: var(--vert);
  box-shadow: inset -6px 0 0 var(--jaune), inset -12px 0 0 var(--rouge);
}
.menu { display: flex; gap: 22px; font-weight: 600; font-size: 0.95rem; }
.menu a:hover { color: var(--vert); }
.actions { display: flex; gap: 10px; }

.btn {
  display: inline-block; padding: 10px 20px; border-radius: 999px; font-weight: 700;
  border: 2px solid var(--vert); cursor: pointer; font-size: 0.95rem; transition: transform .15s, background .15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-plein { background: var(--vert); color: #fff; }
.btn-plein:hover { background: #007a4e; }
.btn-ligne { background: transparent; color: var(--vert); }
.btn-jaune { background: var(--jaune); border-color: var(--jaune); color: var(--encre); }

.hero {
  background: linear-gradient(135deg, #0b3d2b 0%, #009460 100%);
  color: #fff; padding: 84px 0 96px;
}
.hero .container { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(2rem, 4.6vw, 3.4rem); line-height: 1.12; margin-bottom: 18px; }
.hero h1 span { color: var(--jaune); }
.hero p { font-size: 1.1rem; opacity: .92; max-width: 560px; margin-bottom: 28px; }
.hero .btn-ligne { color: #fff; border-color: #fff; }
.hero-boutons { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-carte {
  background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .25);
  border-radius: 24px; padding: 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.stat strong { display: block; font-size: 1.5rem; color: var(--jaune); }
.stat span { font-size: .9rem; opacity: .9; }

section { padding: 72px 0; }
.titre { text-align: center; max-width: 680px; margin: 0 auto 44px; }
.titre h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); color: var(--encre); margin-bottom: 10px; }
.titre p { color: var(--doux); }

.grille { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.carte {
  background: var(--carte); border: 1px solid var(--bord); border-radius: var(--rayon);
  padding: 24px; box-shadow: var(--ombre);
}
.carte .icone { font-size: 1.8rem; margin-bottom: 10px; }
.carte h3 { color: var(--encre); margin-bottom: 6px; font-size: 1.1rem; }
.carte p { color: var(--doux); font-size: .95rem; }

.fond-blanc { background: #fff; }
.etapes { counter-reset: etape; }
.etape { position: relative; padding-top: 52px; }
.etape::before {
  counter-increment: etape; content: counter(etape);
  position: absolute; top: 18px; left: 24px; width: 30px; height: 30px; border-radius: 50%;
  background: var(--jaune); color: var(--encre); font-weight: 800; display: grid; place-items: center;
}

.bandeau { background: var(--encre); color: #fff; text-align: center; padding: 56px 0; }
.bandeau h2 { margin-bottom: 14px; }
.bandeau p { opacity: .85; margin-bottom: 22px; }

.pied { background: #0d1a13; color: #b8c4bd; padding: 36px 0; font-size: .9rem; }
.pied .container { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }

@media (max-width: 820px) {
  .hero .container { grid-template-columns: 1fr; }
  .menu { display: none; }
  section { padding: 52px 0; }
}

.installer { padding: 48px 0; text-align: center; }
.installer[hidden], .installer [hidden] { display: none !important; }
.aide-install { display: inline-block; text-align: left; margin: 16px auto 0; padding: 16px 20px 16px 38px; background: var(--carte); border: 1px solid var(--bord); border-radius: var(--rayon); line-height: 1.7; }