:root{
    --vert:#2e7d32; --vert-fonce:#1b5e20; --vert-nuit:#0f2e14; --vert-clair:#e8f5e9; --vert-moyen:#66bb6a; --vert-vif:#8bd17c;
    --encre:#1f2a1f; --gris:#5f6b5f; --fond:#fbfcf9; --blanc:#ffffff; --bord:#d9e4d6;
    --ombre:0 12px 32px rgba(27,94,32,.14);
    --lent:.9s cubic-bezier(.22,.61,.36,1);
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  html{overflow-x:hidden}
  body{font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;color:var(--encre);background:var(--fond);line-height:1.55;font-size:17px;overflow-x:hidden}
  #offre,#zone,#photos,#faq{overflow-x:clip}
  a{color:var(--vert-fonce)}
  .conteneur{max-width:1040px;margin:0 auto;padding:0 20px}
  h1,h2,h3{line-height:1.2;color:var(--vert-fonce)}
  h2{font-size:1.9rem;margin-bottom:.6rem;letter-spacing:-.01em}
  p.sous{color:var(--gris);max-width:640px;margin-bottom:1.8rem;font-size:1.05rem}

  /* ---------- barre haute ---------- */
  .barre{position:fixed;top:0;left:0;right:0;z-index:20;transition:background .4s,box-shadow .4s,backdrop-filter .4s}
  .barre .conteneur{display:flex;align-items:center;justify-content:space-between;gap:12px;height:68px}
  .barre.sur-video{background:transparent}
  .barre.sur-video .marque,.barre.sur-video .marque small{color:#fff}
  .barre.collee{background:rgba(255,255,255,.97);box-shadow:0 1px 0 var(--bord),0 8px 24px rgba(0,0,0,.06)}
  .marque{display:flex;align-items:center;gap:14px;color:var(--vert-fonce);text-decoration:none;transition:color .4s}
  .logo{display:block;fill:currentColor;color:inherit}
  .marque .logo{height:46px;width:124px;flex:none}
  .barre.sur-video .marque .logo{filter:drop-shadow(0 2px 8px rgba(0,0,0,.35))}
  .marque small{display:block;font-weight:600;color:var(--gris);font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;transition:color .4s;padding-left:14px;border-left:1px solid currentColor;opacity:.85}
  .logo-hero{width:min(320px,70vw);height:auto;aspect-ratio:2374/880;color:#fff;margin-bottom:22px;filter:drop-shadow(0 4px 18px rgba(0,0,0,.4))}
  .btn{display:inline-flex;align-items:center;gap:8px;padding:13px 22px;border-radius:10px;font-weight:700;text-decoration:none;border:2px solid transparent;white-space:nowrap;transition:transform .25s,box-shadow .25s,background .25s,color .25s}
  .btn:hover{transform:translateY(-2px)}
  .btn:active{transform:translateY(0)}
  .btn-plein{background:var(--vert);color:#fff;box-shadow:0 6px 18px rgba(46,125,50,.28)}
  .btn-plein:hover{background:var(--vert-fonce);box-shadow:0 10px 26px rgba(46,125,50,.36)}
  .btn-ligne{border-color:var(--vert);color:var(--vert-fonce);background:#fff}
  .btn-ligne:hover{background:var(--vert-clair)}
  .barre .btn{padding:10px 16px;font-size:.95rem}
  .barre .tel-court{display:none}

  /* ---------- accueil vidéo ---------- */
  .hero{position:relative;min-height:100svh;display:flex;align-items:center;color:#fff;overflow:hidden;background:var(--vert-nuit)}
  .hero .fond{position:absolute;inset:0;z-index:0}
  .hero .fond img{width:100%;height:100%;object-fit:cover;display:block;transform:scale(1.06);animation:respire 18s ease-in-out infinite alternate}
  @keyframes respire{from{transform:scale(1.06) translateY(0)}to{transform:scale(1.12) translateY(-1.5%)}}
  .hero .voile{position:absolute;inset:0;z-index:1;background:linear-gradient(100deg,rgba(9,36,14,.8) 0%,rgba(9,36,14,.5) 45%,rgba(9,36,14,.15) 100%)}
  .hero .voile::before{content:"";position:absolute;inset:0 0 auto 0;height:45%;background:linear-gradient(180deg,rgba(9,36,14,.55),transparent)}
  .hero .voile::after{content:"";position:absolute;inset:auto 0 0 0;height:45%;background:linear-gradient(180deg,transparent,rgba(9,36,14,.7))}
  .hero .conteneur{position:relative;z-index:2;padding-top:110px;padding-bottom:200px;width:100%}
  .hero .texte{max-width:620px}
  .etiquette{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.28);backdrop-filter:blur(6px);color:#fff;font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;padding:7px 14px;border-radius:999px;margin-bottom:22px}
  .etiquette i{width:8px;height:8px;border-radius:50%;background:var(--vert-vif);box-shadow:0 0 0 0 rgba(139,209,124,.7);animation:pulse 2.2s infinite}
  @keyframes pulse{0%{box-shadow:0 0 0 0 rgba(139,209,124,.7)}70%{box-shadow:0 0 0 10px rgba(139,209,124,0)}100%{box-shadow:0 0 0 0 rgba(139,209,124,0)}}
  h1{font-size:clamp(2.2rem,5.2vw,3.6rem);margin-bottom:18px;color:#fff;letter-spacing:-.02em;text-shadow:0 2px 6px rgba(0,0,0,.35),0 8px 30px rgba(0,0,0,.35)}
  .hero p,.points li{text-shadow:0 1px 4px rgba(0,0,0,.35)}
  h1 em{font-style:normal;color:var(--vert-vif)}
  h1.marque-offre{font-size:clamp(2.8rem,7vw,5rem);letter-spacing:-.03em;line-height:1;margin-bottom:12px}
  .hero p.accroche{font-size:clamp(1.2rem,2.4vw,1.5rem);color:#fff;font-weight:600;margin-bottom:14px}
  .hero p{font-size:1.15rem;color:rgba(255,255,255,.88);margin-bottom:28px;max-width:540px}
  .actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
  .hero .btn-ligne{border-color:rgba(255,255,255,.7);color:#fff;background:rgba(255,255,255,.08);backdrop-filter:blur(6px)}
  .hero .btn-ligne:hover{background:rgba(255,255,255,.18)}
  .points{list-style:none;display:grid;gap:10px}
  .points li{padding-left:30px;position:relative;color:rgba(255,255,255,.92)}
  .points li::before{content:"";position:absolute;left:0;top:7px;width:16px;height:16px;border-radius:50%;background:var(--vert-vif);box-shadow:0 0 0 4px rgba(139,209,124,.2)}
  /* entrée en scène */
  .hero .anim{opacity:0;transform:translateY(26px);animation:monte var(--lent) forwards}
  .hero .anim:nth-child(1){animation-delay:.1s}.hero .anim:nth-child(2){animation-delay:.25s}.hero .anim:nth-child(3){animation-delay:.4s}.hero .anim:nth-child(4){animation-delay:.55s}.hero .anim:nth-child(5){animation-delay:.7s}.hero .anim:nth-child(6){animation-delay:.85s}.hero .anim:nth-child(7){animation-delay:1s}
  @keyframes monte{to{opacity:1;transform:none}}
  /* indice de défilement */
  .defile{position:absolute;left:50%;bottom:26px;z-index:2;transform:translateX(-50%);color:rgba(255,255,255,.75);font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;display:flex;flex-direction:column;align-items:center;gap:8px;text-decoration:none}
  .defile span{width:1px;height:38px;background:linear-gradient(180deg,rgba(255,255,255,.9),transparent);animation:goutte 1.8s ease-in-out infinite}
  @keyframes goutte{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
  /* brins d'herbe animés en bas du hero */
  .herbe{position:absolute;left:0;right:0;bottom:-2px;z-index:3;height:90px;pointer-events:none}
  .herbe svg{width:100%;height:100%;display:block}
  .herbe .b{transform-origin:50% 100%;animation:vent 4.5s ease-in-out infinite alternate}
  .herbe .b:nth-child(2n){animation-duration:5.3s;animation-delay:-1.2s}
  .herbe .b:nth-child(3n){animation-duration:3.9s;animation-delay:-2.4s}
  @keyframes vent{from{transform:skewX(-6deg)}to{transform:skewX(6deg)}}

  /* ---------- apparition au défilement ---------- */
  .rev{opacity:0;transform:translateY(34px);transition:opacity var(--lent),transform var(--lent)}
  .rev.vu{opacity:1;transform:none}
  .rev-g{opacity:0;transform:translateX(-34px);transition:opacity var(--lent),transform var(--lent)}
  .rev-g.vu{opacity:1;transform:none}
  .rev-d{opacity:0;transform:translateX(34px);transition:opacity var(--lent),transform var(--lent)}
  .rev-d.vu{opacity:1;transform:none}
  .cascade > *{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1)}
  .cascade.vu > *{opacity:1;transform:none}

  /* ---------- sections ---------- */
  section{padding:88px 0;position:relative}
  section + section{border-top:1px solid var(--bord)}
  #offre{border-top:0;padding-top:0}
  .surtitre{display:block;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--vert);font-weight:700;margin-bottom:10px}
  .cartes{display:grid;grid-template-columns:1fr 1fr;gap:22px}
  .carte{background:var(--blanc);border:1px solid var(--bord);border-radius:16px;padding:30px;position:relative;overflow:hidden;transition:transform .35s,box-shadow .35s,border-color .35s}
  .carte::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:linear-gradient(180deg,var(--vert-vif),var(--vert));transform:scaleY(0);transform-origin:top;transition:transform .5s}
  .carte:hover{transform:translateY(-6px);box-shadow:var(--ombre);border-color:#c5dcc0}
  .carte:hover::before{transform:scaleY(1)}
  .carte h3{font-size:1.3rem;margin-bottom:12px;display:flex;align-items:center;gap:12px}
  .carte h3 span{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:10px;background:var(--vert-clair);color:var(--vert-fonce);font-size:1rem;transition:background .3s,color .3s}
  .carte:hover h3 span{background:var(--vert);color:#fff}
  .carte ul{padding-left:20px}
  .carte li{margin:7px 0}
  .carte p.note{margin-top:14px;color:var(--gris);font-size:.95rem;border-top:1px dashed var(--bord);padding-top:12px}

  /* atouts */
  .atouts{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:-150px 0 64px;position:relative;z-index:4}
  .atout{background:var(--blanc);border:1px solid var(--bord);border-radius:16px;padding:24px 22px;box-shadow:var(--ombre);transition:transform .35s,box-shadow .35s}
  .atout:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(27,94,32,.18)}
  .atout svg{width:36px;height:36px;color:var(--vert);margin-bottom:12px;display:block}
  .atout strong{display:block;color:var(--vert-fonce);font-size:1.08rem;margin-bottom:6px;line-height:1.25}
  .atout span{color:var(--gris);font-size:.95rem}

  /* comparatif semis / rouleau */
  .compare{margin-top:44px;background:var(--blanc);border:1px solid var(--bord);border-radius:16px;padding:26px;box-shadow:var(--ombre);overflow:hidden}
  .compare-tete h3{font-size:1.3rem;margin-bottom:14px}
  .compare table{width:100%;border-collapse:collapse;font-size:.95rem}
  .compare th,.compare td{padding:11px 12px;text-align:left;vertical-align:top;border-top:1px solid var(--bord)}
  .compare thead th{border-top:0;color:var(--gris);font-weight:600;font-size:.85rem;letter-spacing:.04em;text-transform:uppercase}
  .compare td:first-child{font-weight:700;color:var(--vert-fonce);width:22%}
  .compare .nous{background:var(--vert-clair);color:var(--vert-fonce);font-weight:600}
  .compare thead .nous{color:var(--vert-fonce);border-radius:10px 10px 0 0}
  @media (max-width:820px){
    .compare{padding:16px}
    .compare table,.compare thead,.compare tbody,.compare tr,.compare td,.compare th{display:block}
    .compare thead{display:none}
    .compare tr{border-top:1px solid var(--bord);padding:8px 0}
    .compare td{border:0;padding:4px 0;width:auto !important}
    .compare td:first-child{padding-top:8px}
    .compare td:nth-child(2)::before{content:"Semis : ";color:var(--gris);font-weight:600}
    .compare td.nous{padding:6px 10px;border-radius:8px;margin-top:4px}
    .compare td.nous::before{content:"Prêt à poser : ";font-weight:700}
  }

  /* étapes avec ligne animée */
  .etapes{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:36px;position:relative}
  .etapes::before{content:"";position:absolute;left:8%;right:8%;top:26px;height:2px;background:var(--bord);z-index:0}
  .etapes::after{content:"";position:absolute;left:8%;top:26px;height:2px;width:0;background:var(--vert);z-index:0;transition:width 1.6s cubic-bezier(.22,.61,.36,1) .2s}
  .etapes.vu::after{width:84%}
  .etape{position:relative;z-index:1;text-align:center}
  .etape b{display:grid;place-items:center;width:52px;height:52px;margin:0 auto 12px;border-radius:50%;background:#fff;border:2px solid var(--vert);color:var(--vert-fonce);font-size:1.05rem;transition:background .3s,color .3s,transform .3s}
  .etape:hover b{background:var(--vert);color:#fff;transform:scale(1.08)}
  .etape strong{display:block;color:var(--vert-fonce);margin-bottom:4px}
  .etape small{color:var(--gris);font-size:.92rem}

  .photos{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .photos figure{border-radius:16px;overflow:hidden;background:var(--blanc);border:1px solid var(--bord);transition:transform .35s,box-shadow .35s}
  .photos figure:hover{transform:translateY(-6px);box-shadow:var(--ombre)}
  .photos .cadre{aspect-ratio:4/3;display:grid;place-items:center;color:#fff;font-weight:600;text-align:center;padding:20px;background:linear-gradient(160deg,#66bb6a,#2e7d32);position:relative;overflow:hidden}
  .photos .cadre::after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,transparent 30%,rgba(255,255,255,.18) 50%,transparent 70%);transform:translateX(-100%);transition:transform .9s}
  .photos figure:hover .cadre::after{transform:translateX(100%)}
  .photos img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;display:block;transition:transform .8s}
  .photos picture{display:block}
  .photos figure:hover img{transform:scale(1.05)}
  .photos figcaption{padding:14px 16px;font-size:.95rem;color:var(--gris)}
  .photos figcaption b{display:block;color:var(--vert-fonce);margin-bottom:4px}
  .legende-illus{margin-top:18px;font-size:.85rem;color:var(--gris)}
  .pepiniere{margin-top:14px;font-size:.95rem;color:var(--gris)}
  .pepiniere a{font-weight:700}

  .zone{display:grid;grid-template-columns:1.2fr 1fr;gap:32px;align-items:start}
  .communes{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
  .communes span{background:var(--vert-clair);color:var(--vert-fonce);padding:6px 12px;border-radius:999px;font-size:.9rem;transition:background .25s,color .25s,transform .25s}
  .communes span:hover{background:var(--vert);color:#fff;transform:translateY(-2px)}
  .infos{background:var(--blanc);border:1px solid var(--bord);border-radius:16px;padding:26px;box-shadow:var(--ombre)}
  .infos dt{font-weight:700;color:var(--vert-fonce);margin-top:14px;display:flex;align-items:center;gap:8px}
  .infos dt::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--vert-moyen)}
  .infos dt:first-child{margin-top:0}
  .infos dd{color:var(--encre);padding-left:16px}

  /* ---------- contact ---------- */
  .contact{background:var(--vert-fonce);color:#fff;overflow:hidden}
  .contact::before,.contact::after{content:"";position:absolute;border-radius:50%;background:radial-gradient(circle,rgba(139,209,124,.35),transparent 70%);filter:blur(10px);animation:derive 14s ease-in-out infinite alternate}
  .contact::before{width:420px;height:420px;right:-120px;top:-160px}
  .contact::after{width:320px;height:320px;left:-100px;bottom:-140px;animation-delay:-7s}
  @keyframes derive{from{transform:translate(0,0)}to{transform:translate(30px,40px)}}
  .contact .conteneur{position:relative;z-index:1}
  .contact h2{color:#fff}
  .contact p.sous{color:#d7ead8}
  .contact .actions .btn-plein{background:#fff;color:var(--vert-fonce);box-shadow:0 8px 24px rgba(0,0,0,.2)}
  .contact .actions .btn-ligne{border-color:#fff;color:#fff;background:transparent}
  .contact .actions .btn-ligne:hover{background:rgba(255,255,255,.12)}
  .contact .gros{font-size:clamp(2rem,6vw,3rem);font-weight:800;letter-spacing:.02em;text-decoration:none;color:#fff;display:inline-block;margin:4px 0 18px;transition:letter-spacing .3s}
  .contact .gros:hover{letter-spacing:.06em}

  footer{padding:36px 0 44px;font-size:.9rem;color:var(--gris)}
  .logo-pied{width:180px;height:auto;aspect-ratio:2374/880;color:var(--vert-fonce);margin-bottom:12px}
  footer details{margin-top:12px;border-top:1px solid var(--bord);padding-top:12px}
  footer summary{cursor:pointer;font-weight:700;color:var(--vert-fonce)}
  footer details p{margin:8px 0}

  /* ---------- appel flottant mobile ---------- */
  .appel-flottant{display:none}

  @media (max-width:820px){
    body{font-size:16px}
    .hero{min-height:92svh}
    .hero .conteneur{padding-top:96px;padding-bottom:160px}
    .hero p{font-size:1.05rem}
    .cartes,.zone,.atouts{grid-template-columns:1fr}
    .atouts{margin:-56px 0 44px;gap:14px}
    .etiquette{font-size:.72rem;letter-spacing:.05em;padding:6px 12px;max-width:100%}
    .herbe{height:44px}
    .etapes{grid-template-columns:1fr 1fr;gap:22px}
    .etapes::before,.etapes::after{display:none}
    .photos{grid-template-columns:1fr}
    h2{font-size:1.5rem}
    section{padding:56px 0}
    .barre .tel-long{display:none}
    .barre .tel-court{display:inline-flex}
    .marque small{display:none}
    .marque .logo{height:40px;width:108px}
    .logo-hero{width:min(240px,64vw);margin-bottom:16px}
    .defile{display:none}
    .appel-flottant{display:flex;position:fixed;left:16px;right:16px;bottom:16px;z-index:30;justify-content:center;align-items:center;gap:10px;padding:15px;border-radius:14px;background:var(--vert);color:#fff;font-weight:700;text-decoration:none;box-shadow:0 10px 30px rgba(0,0,0,.25);transform:translateY(120%);transition:transform .45s cubic-bezier(.22,.61,.36,1)}
    .appel-flottant.visible{transform:none}
    footer{padding-bottom:96px}
  }

  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation:none !important;transition:none !important}
    .rev,.rev-g,.rev-d,.cascade > *,.hero .anim{opacity:1;transform:none}
    .etapes::after{width:84%}
  }

  /* bascule de langue */
  .lang{display:inline-flex;align-items:center;gap:7px;font-weight:700;font-size:.8rem;letter-spacing:.06em;text-decoration:none;color:var(--vert-fonce);padding:6px 10px 6px 7px;border:1px solid var(--bord);border-radius:999px;margin-right:8px;background:rgba(255,255,255,.08);transition:transform .25s,background .25s}
  .lang:hover{transform:translateY(-1px);background:rgba(255,255,255,.18)}
  .barre.collee .lang:hover{background:var(--vert-clair)}
  .drapeau{width:22px;height:15px;border-radius:3px;box-shadow:0 0 0 1px rgba(0,0,0,.15);display:block}
  @media (max-width:820px){.lang span{display:none}.lang{padding:6px}}
  .barre.sur-video .lang{color:#fff;border-color:rgba(255,255,255,.5)}
  .barre .droite{display:flex;align-items:center}
  /* FAQ */
  .faq details{background:var(--blanc);border:1px solid var(--bord);border-radius:12px;padding:0 20px;margin-bottom:10px}
  .faq summary{cursor:pointer;font-weight:700;color:var(--vert-fonce);padding:16px 0;list-style:none;position:relative;padding-right:32px}
  .faq summary::-webkit-details-marker{display:none}
  .faq summary::after{content:"+";position:absolute;right:0;top:12px;font-size:1.4rem;color:var(--vert);transition:transform .3s}
  .faq details[open] summary::after{transform:rotate(45deg)}
  .faq details p{padding:0 0 16px;color:var(--encre)}
  /* à propos (résumé factuel) */
  .apropos{background:var(--vert-clair);border-radius:16px;padding:24px 26px;margin-top:28px}
  .apropos p{margin:0}

  /* avis Google */
  .avis-note{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px;margin-bottom:22px}
  .avis-note strong{font-size:2.6rem;color:var(--vert-fonce);line-height:1}
  .avis-sur{color:var(--gris);font-weight:600}
  .etoiles{color:#f2b01e;letter-spacing:2px;font-size:1.15rem}
  .avis-nb{color:var(--gris);font-size:.95rem;width:100%}
  .avis-grille{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .avis-carte{background:var(--blanc);border:1px solid var(--bord);border-radius:16px;padding:22px;display:flex;flex-direction:column;gap:10px;transition:transform .35s,box-shadow .35s}
  .avis-carte:hover{transform:translateY(-4px);box-shadow:var(--ombre)}
  .avis-tete{display:flex;justify-content:space-between;align-items:center}
  .avis-date{color:var(--gris);font-size:.85rem}
  .avis-carte p{color:var(--encre);font-size:.98rem;flex:1}
  .avis-carte footer{color:var(--vert-fonce);font-weight:700;font-size:.9rem}
  .avis-liens{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
  @media (max-width:820px){.avis-grille{grid-template-columns:1fr}}

  .photos figure:nth-child(4),.photos figure:nth-child(5){grid-column:span 1}
  @media (min-width:821px){.photos{grid-template-columns:repeat(6,1fr)}.photos figure{grid-column:span 2}.photos figure:nth-child(4){grid-column:2/span 2}.photos figure:nth-child(5){grid-column:4/span 2}}

  /* diaporama de photos réelles à l'accueil : fondu piloté par un petit script */
  .diaporama{background:var(--vert-nuit)}
  .hero .diaporama img.diapo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity 1.8s ease-in-out;animation:respire 18s ease-in-out infinite alternate}
  .hero .diaporama img.diapo.active{opacity:1}
  .hero .diaporama img.diapo:nth-child(2){animation-delay:-3s}
  .hero .diaporama img.diapo:nth-child(3){animation-delay:-6s}
  .hero .diaporama img.diapo:nth-child(4){animation-delay:-9s}
  .hero .diaporama img.diapo:nth-child(5){animation-delay:-12s}
  @media (prefers-reduced-motion:reduce){.hero .diaporama img.diapo{transition:none}}