:root {
  --vert: #166534;
  --vert-fonce: #14532d;
  --vert-clair: #ecfdf3;
  --ambre: #f59e0b;
  --ambre-fonce: #b45309;
  --texte: #1f2937;
  --texte-doux: #4b5563;
  --fond: #ffffff;
  --fond-alt: #f6f7f4;
  --bord: #e5e7eb;
  --rayon: 12px;
  --ombre: 0 10px 30px rgba(20, 83, 45, 0.12);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--texte);
  background: var(--fond);
  line-height: 1.6;
  font-size: 17px;
}
a { color: var(--vert); }
a:hover { color: var(--vert-fonce); }
h1, h2, h3 { line-height: 1.2; color: var(--vert-fonce); }
h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 0.3em 0 0.5em; }
h2 { font-size: clamp(1.35rem, 2.6vw, 1.75rem); margin: 1.6em 0 0.6em; }
.conteneur { max-width: 1160px; margin: 0 auto; padding: 0 16px; }
.etroit { max-width: 820px; }

/* En-tête */
.entete { position: sticky; top: 0; z-index: 10; background: rgba(255, 255, 255, 0.96); border-bottom: 1px solid var(--bord); backdrop-filter: blur(6px); }
.entete-in { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.logo { font-weight: 800; font-size: 1.25rem; color: var(--vert-fonce); text-decoration: none; }
.menu { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.menu > a { text-decoration: none; color: var(--texte); font-weight: 600; }
.deroulant { position: relative; }
.deroulant summary { cursor: pointer; font-weight: 600; list-style: none; }
.deroulant summary::after { content: " ▾"; font-size: 0.8em; }
.deroulant div { position: absolute; top: 140%; left: 0; background: #fff; border: 1px solid var(--bord); border-radius: var(--rayon); box-shadow: var(--ombre); padding: 8px; min-width: 220px; display: grid; }
.deroulant div a { padding: 8px 10px; border-radius: 8px; text-decoration: none; color: var(--texte); }
.deroulant div a:hover { background: var(--vert-clair); }

/* Boutons */
.bouton { display: inline-block; background: var(--ambre); color: #1f1300; border: 0; border-radius: 999px; padding: 14px 26px; font-weight: 800; font-size: 1.05rem; cursor: pointer; text-decoration: none; transition: background 0.15s; width: 100%; }
.bouton:hover { background: #fbbf24; color: #1f1300; }
.bouton:disabled { opacity: 0.6; cursor: wait; }
.bouton-petit { padding: 9px 18px; font-size: 0.95rem; width: auto; }

/* Hero */
.hero { background: linear-gradient(160deg, var(--vert-clair), #fff 60%); padding: 40px 0 56px; }
.hero-court { padding-top: 24px; }
.hero-grille { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: start; }
.chapo { font-size: 1.12rem; color: var(--texte-doux); }
.atouts { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 8px; }
.atouts li::before { content: "✓ "; color: var(--vert); font-weight: 800; }
.fil { font-size: 0.9rem; color: var(--texte-doux); margin: 0; }
.prix-cle { background: #fff; border-left: 4px solid var(--ambre); padding: 12px 16px; border-radius: 8px; }

/* Formulaire */
.devis { background: #fff; border: 1px solid var(--bord); border-radius: 16px; box-shadow: var(--ombre); padding: 24px; position: relative; }
.devis h2 { margin: 0 0 4px; font-size: 1.4rem; }
.devis-sous { margin: 0 0 16px; color: var(--texte-doux); font-size: 0.95rem; }
.grille { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.devis label { display: grid; gap: 4px; font-size: 0.88rem; font-weight: 600; color: var(--texte); }
.devis .large { grid-column: 1 / -1; }
.devis input[type="text"], .devis input[type="tel"], .devis input[type="email"], .devis select, .devis textarea {
  width: 100%; font: inherit; font-weight: 400; font-size: 1rem; padding: 10px 12px; border: 1px solid #cbd5e1; border-radius: 8px; background: #fff; color: var(--texte);
}
.devis input:focus, .devis select:focus, .devis textarea:focus { outline: 2px solid var(--vert); outline-offset: 1px; border-color: var(--vert); }
.devis > .large { margin-top: 12px; }
.accord { display: flex !important; grid-template-columns: none; gap: 10px !important; align-items: flex-start; font-weight: 400 !important; font-size: 0.85rem !important; color: var(--texte-doux) !important; margin: 16px 0; }
.accord input { margin-top: 3px; width: 18px; height: 18px; flex: none; }
.cases { border: 1px solid var(--bord); border-radius: 8px; margin: 12px 0; padding: 10px 12px; display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.cases legend { font-weight: 600; font-size: 0.88rem; padding: 0 4px; }
.cases label { display: flex; gap: 8px; align-items: center; font-weight: 400; }
.devis .bouton { margin-top: 12px; }
.message-envoi { padding: 16px 18px; border-radius: 12px; font-weight: 600; margin: 12px 0; }
.message-envoi.ok { background: var(--vert-clair); color: var(--vert-fonce); border: 1px solid #86efac; }
.message-envoi.erreur { background: #fef2f2; color: #991b1b; border: 1px solid #fca5a5; }

/* Blocs */
.bloc { padding: 48px 0; }
.fond { background: var(--fond-alt); }
.etapes { list-style: none; counter-reset: e; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.etapes li { counter-increment: e; background: #fff; border: 1px solid var(--bord); border-radius: var(--rayon); padding: 20px; display: grid; gap: 6px; }
.etapes li::before { content: counter(e); width: 36px; height: 36px; border-radius: 50%; background: var(--vert); color: #fff; display: grid; place-items: center; font-weight: 800; }
.etapes span { color: var(--texte-doux); }
.cartes { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.carte { background: #fff; border: 1px solid var(--bord); border-radius: var(--rayon); padding: 18px; text-decoration: none; color: var(--texte); display: grid; gap: 6px; transition: transform 0.15s, box-shadow 0.15s; }
.carte:hover { transform: translateY(-2px); box-shadow: var(--ombre); color: var(--texte); }
.carte strong { color: var(--vert-fonce); }
.carte span { color: var(--texte-doux); font-size: 0.95rem; }
.liste-villes { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 8px 16px; }
.coches { padding-left: 0; list-style: none; display: grid; gap: 8px; }
.coches li { padding-left: 28px; position: relative; }
.coches li::before { content: "✓"; position: absolute; left: 0; color: var(--vert); font-weight: 800; }
.prix { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--rayon); overflow: hidden; border: 1px solid var(--bord); }
.prix th, .prix td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--bord); }
.prix th { background: var(--vert); color: #fff; }
.prix tr:last-child td { border-bottom: 0; }
.note { font-size: 0.9rem; color: var(--texte-doux); }
.faq { border: 1px solid var(--bord); border-radius: var(--rayon); padding: 0 16px; margin-bottom: 10px; background: #fff; }
.faq summary { cursor: pointer; font-weight: 700; padding: 14px 0; }
.faq p { margin-top: 0; color: var(--texte-doux); }
.texte p { color: var(--texte-doux); }

/* Pied */
.pied { background: var(--vert-fonce); color: #d1fae5; padding: 40px 0 16px; margin-top: 24px; }
.pied a { color: #d1fae5; text-decoration: none; display: block; padding: 2px 0; font-size: 0.92rem; }
.pied a:hover { color: #fff; text-decoration: underline; }
.pied .logo { color: #fff; }
.pied-grille { display: grid; grid-template-columns: 1.3fr 1fr 1.6fr 0.8fr; gap: 28px; }
.pied-titre { font-weight: 800; color: #fff; margin: 0 0 8px; }
.pied-villes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 10px; }
.copyright { font-size: 0.85rem; opacity: 0.8; border-top: 1px solid rgba(255, 255, 255, 0.15); padding-top: 14px; margin-top: 24px; }

@media (max-width: 900px) {
  .hero-grille, .pied-grille { grid-template-columns: 1fr; }
  .etapes { grid-template-columns: 1fr; }
  .menu { gap: 12px; font-size: 0.95rem; }
}
@media (max-width: 560px) {
  .grille, .cases { grid-template-columns: 1fr; }
  .menu > a:not(.bouton) { display: none; }
  .pied-villes { grid-template-columns: repeat(2, 1fr); }
  .devis { padding: 18px; }
}