:root{--brand:#180058;--brand-soft:#2c1a7a;--accent:#2b5fd9;--accent-dk:#1d47ab;--rouge:#c8102e;
      --bg:#fbfaf7;--bg-soft:#f4f1ea;--surface:#fff;--line:#e4dfd3;--text:#15123a;--muted:#6a6455}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
     font:17px/1.62 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
.wrap{max-width:1060px;margin:0 auto;padding:0 20px}
h2{font-size:32px;line-height:1.16;margin:0 0 12px;font-weight:800;letter-spacing:-.6px}
.intro{color:var(--muted);font-size:18px;margin:0 0 36px;max-width:680px}
section{padding:64px 0;scroll-margin-top:56px}
section.alt{background:var(--bg-soft)}
.apercu{background:#111;color:#fff;text-align:center;padding:9px 16px;font-size:13px}
.num{display:inline-flex;align-items:center;gap:10px;color:var(--accent-dk);font-size:12.5px;font-weight:800;
     letter-spacing:2px;text-transform:uppercase;margin:0 0 12px}
.num b{background:var(--accent);color:#fff;width:26px;height:26px;border-radius:50%;display:inline-flex;
       align-items:center;justify-content:center;font-size:13px;letter-spacing:0}

/* barre de navigation */
.sommaire{position:sticky;top:0;z-index:5;background:rgba(251,250,247,.94);backdrop-filter:blur(8px);
          border-bottom:1px solid var(--line)}
.sommaire .wrap{display:flex;gap:6px;align-items:center;overflow-x:auto;padding-top:9px;padding-bottom:9px}
.sommaire a{white-space:nowrap;color:var(--text);text-decoration:none;font-size:14.5px;font-weight:600;
            padding:7px 13px;border-radius:20px}
.sommaire a:hover{background:var(--bg-soft)}
.sommaire a.ecrire{margin-left:auto;background:var(--brand);color:#fff}

/* hero */
.hero{background:linear-gradient(160deg,var(--brand),var(--brand-soft) 60%,#3a2599);color:#fff;padding:54px 0 60px}
.hero h1{font-size:44px;line-height:1.1;margin:.15em 0 .45em;font-weight:800;letter-spacing:-.8px;max-width:17ch}
.hero .lede{font-size:19.5px;opacity:.94;margin:0 0 28px;max-width:660px}
.kicker{text-transform:uppercase;letter-spacing:2.2px;font-size:12px;font-weight:700;opacity:.72;margin:0}
.boutons{display:flex;gap:12px;flex-wrap:wrap}
.cta{display:inline-block;background:#fff;color:var(--brand);font-weight:700;font-size:17px;
     padding:15px 30px;border-radius:9px;text-decoration:none;box-shadow:0 6px 20px rgba(0,0,0,.22)}
.cta.ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.55);box-shadow:none}
.hero .grille{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.illu{border-radius:14px;overflow:hidden;box-shadow:0 18px 44px rgba(0,0,0,.4);line-height:0}
.illu svg,.illu img{width:100%;height:auto;display:block}
.demo{background:linear-gradient(160deg,var(--brand),var(--brand-soft) 70%,#3a2599);color:#fff;border-radius:16px;padding:30px 30px 26px;margin:30px 0 0}
.demo h3{margin:0 0 4px;font-size:20px;font-weight:800}
.demo .d{margin:0 0 22px;opacity:.85;font-size:15.5px}
.illu.plat{box-shadow:none;border-radius:0}
.deux-lieux{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}
.deux-lieux div{background:rgba(255,255,255,.1);border-radius:10px;padding:14px 16px;font-size:15px;line-height:1.5}
.deux-lieux b{display:block;margin-bottom:2px}
.deux-lieux span{opacity:.85}
/* 01 pour qui */
.pourqui{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.profil{background:var(--surface);border:1px solid var(--line);border-top:4px solid var(--accent);
        border-radius:12px;padding:26px 24px}
.profil .ic{width:44px;height:44px;border-radius:11px;background:#eef2fd;color:var(--accent-dk);
            display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.profil h3{font-size:19px;margin:0 0 8px;font-weight:800}
.profil p{margin:0 0 12px;color:var(--muted);font-size:15.5px;line-height:1.55}
.profil .ex{font-size:13.5px;color:var(--text);line-height:1.6}
.profil .ex span{display:inline-block;background:var(--bg-soft);border-radius:14px;padding:3px 10px;margin:0 4px 6px 0}
.autres{margin:22px 0 0;color:var(--muted);font-size:16px}
.autres a{color:var(--accent-dk);font-weight:700}

/* 02 pourquoi */
.pilier{display:grid;grid-template-columns:64px 1fr .9fr;gap:30px;align-items:start;
        padding:34px 0;border-top:1px solid var(--line)}
.pilier:first-of-type{border-top:0;padding-top:6px}
.pilier .n{font-size:54px;font-weight:800;color:var(--accent);line-height:.9;letter-spacing:-2px}
.pilier h3{font-size:24px;margin:0 0 10px;font-weight:800;letter-spacing:-.3px}
.pilier p{margin:0 0 12px;color:var(--muted);font-size:16.5px;line-height:1.6}
.pilier p strong{color:var(--text)}
.points{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.points li{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px 16px;font-size:15.5px;line-height:1.5}
.points li b{display:block;font-size:15.5px;margin-bottom:2px}
.points li span{color:var(--muted)}
.besoins{display:flex;flex-wrap:wrap;gap:8px}
.besoins span{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:7px 14px;font-size:14.5px}

/* 03 offres */
.lancement{background:var(--rouge);color:#fff;display:inline-block;font-weight:800;font-size:13px;
           letter-spacing:.8px;padding:8px 14px;border-radius:6px;margin-bottom:22px;text-transform:uppercase}
.offres{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}
.offre{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:28px 26px;
       display:flex;flex-direction:column}
.offre{border:2px solid var(--brand);box-shadow:0 12px 30px rgba(24,0,88,.08)}
.offre .type{font-size:11.5px;font-weight:800;letter-spacing:1.2px;text-transform:uppercase;color:var(--accent-dk);margin:0 0 8px}
.offre h3{font-size:21px;margin:0 0 8px;font-weight:800;line-height:1.2}
.offre .quoi{color:var(--muted);font-size:15.5px;margin:0 0 16px;line-height:1.55}
.offre ul{list-style:none;margin:0 0 22px;padding:0;font-size:15px;line-height:1.5}
.offre ul li{padding:7px 0 7px 26px;position:relative;border-top:1px solid var(--line)}
.offre ul li::before{content:"";position:absolute;left:3px;top:13px;width:11px;height:6px;
                     border-left:2.5px solid var(--accent);border-bottom:2.5px solid var(--accent);transform:rotate(-45deg)}
.prix{margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}
.prix .m{font-size:34px;font-weight:800;color:var(--brand);letter-spacing:-1.2px;line-height:1}
.prix .m small{font-size:15px;font-weight:700;letter-spacing:0}
.prix .s{color:var(--muted);font-size:14px;margin-top:6px}
.prix .barre{text-decoration:line-through;opacity:.6}
.paliers{margin:0 0 18px;display:grid;gap:8px}
.palier{display:flex;justify-content:space-between;align-items:baseline;gap:10px;background:var(--bg-soft);
        border-radius:9px;padding:11px 14px;font-size:15px}
.palier b{font-size:15px}
.palier span{color:var(--muted);font-size:13.5px}
.palier strong{color:var(--brand);white-space:nowrap}
.note{font-size:14.5px;color:var(--muted);margin:14px 0 0}
.realisation{margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}
.realisation .rt{margin:0 0 10px;font-size:14.5px;color:var(--muted);line-height:1.5}
.realisation .rl{display:flex;justify-content:space-between;gap:10px;font-size:14.5px;padding:5px 0}
.realisation .rl strong{color:var(--brand);white-space:nowrap}
.realisation .rn{margin:8px 0 0;font-size:13px;color:var(--muted)}

.releve{background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;padding:22px 26px;margin:22px 0 0;
        display:flex;gap:16px;align-items:center;font-size:18px;font-weight:700}
.releve .ic{width:40px;height:40px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;flex:none}

.sous-titre{font-size:22px;font-weight:800;margin:56px 0 6px;letter-spacing:-.3px}
.sous-intro{color:var(--muted);margin:0 0 22px;font-size:16.5px}
.emissions{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.em{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:20px 20px;display:flex;flex-direction:column;gap:8px}
.em .genre{font-size:11.5px;font-weight:800;letter-spacing:1px;color:var(--accent-dk);text-transform:uppercase}
.em.social{border-style:dashed}
.em .reseaux{align-self:flex-start;background:#fff4e0;color:#8a5200;font-size:11.5px;font-weight:700;padding:4px 9px;border-radius:12px}
.em h4{font-size:17.5px;margin:0;font-weight:800;line-height:1.25}
.em p{margin:0;color:var(--muted);font-size:15px;line-height:1.5}

/* preuves, fourniture, etapes */
.noms{display:flex;flex-wrap:wrap;gap:9px;margin-top:6px}
.noms span{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:7px 15px;font-size:15px}
.noms span.plus{background:var(--brand);color:#fff;border-color:var(--brand);font-weight:700}
.rien{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.rien div{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:10px;padding:19px 22px}
.rien b{display:block;font-size:16.5px;margin-bottom:4px}
.rien span{color:var(--muted);font-size:15.5px}
.etapes{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:e}
.etape{position:relative;padding-top:44px}
.etape::before{counter-increment:e;content:counter(e);position:absolute;top:0;left:0;width:32px;height:32px;
               border-radius:50%;background:var(--accent);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center}
.etape b{display:block;font-size:16.5px;margin-bottom:4px}
.etape span{color:var(--muted);font-size:15px;line-height:1.5}
.delai{color:var(--muted);font-size:16px;line-height:1.6;max-width:680px;margin:36px 0 0;padding-top:24px;border-top:1px solid var(--line)}
.delai strong{color:var(--text)}

/* ---------- le formulaire de demande, dans la page ---------- */
.demande{background:var(--brand);color:#fff}
.demande .wrap{padding:58px 20px 64px}
.demande .num{color:#c3cffa}
.demande .num b{background:rgba(255,255,255,.2)}
.demande h2{font-size:32px;margin:0 0 10px}
.demande .sous{opacity:.88;max-width:640px;margin:0 0 30px;font-size:17px}
.bloc{border:0;margin:0 0 26px;padding:0}
.bloc legend{display:flex;align-items:center;gap:11px;font-size:18px;font-weight:800;margin:0 0 14px;padding:0}
.bloc legend em{font-style:normal;font-size:13.5px;font-weight:600;opacity:.6;letter-spacing:.2px}
.pas{width:27px;height:27px;border-radius:50%;background:#fff;color:var(--brand);
     display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;flex:none}
.cartes{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.carte{position:relative;display:flex;flex-direction:column;gap:5px;cursor:pointer;
       background:rgba(255,255,255,.07);border:1.5px solid rgba(255,255,255,.22);border-radius:13px;
       padding:20px 18px 18px;transition:background .15s,border-color .15s,transform .15s}
.carte:hover{background:rgba(255,255,255,.13)}
.carte input{position:absolute;opacity:0;width:0;height:0}
.carte b{font-size:17px;line-height:1.25;padding-right:26px}
.carte .d{font-size:14px;opacity:.72;line-height:1.45}
.carte .p{margin-top:auto;padding-top:10px;font-size:13px;font-weight:700;color:#c3cffa}
.coche{position:absolute;top:16px;right:16px;width:22px;height:22px;border-radius:50%;
       border:1.5px solid rgba(255,255,255,.45)}
.carte input:checked ~ .coche{background:#fff;border-color:#fff}
.carte input:checked ~ .coche::after{content:"";position:absolute;left:6px;top:6px;width:9px;height:5px;
       border-left:2.5px solid var(--brand);border-bottom:2.5px solid var(--brand);transform:rotate(-45deg)}
.carte:has(input:checked){background:rgba(255,255,255,.2);border-color:#fff}
.carte input:focus-visible ~ .coche{outline:3px solid #9fb0ff;outline-offset:3px}
.pastilles{display:flex;flex-wrap:wrap;gap:9px}
.pastille{cursor:pointer}
.pastille input{position:absolute;opacity:0;width:0;height:0}
.pastille span{display:inline-block;background:rgba(255,255,255,.09);border:1.5px solid rgba(255,255,255,.22);
       border-radius:22px;padding:10px 18px;font-size:15px;transition:background .15s,border-color .15s}
.pastille:hover span{background:rgba(255,255,255,.16)}
.pastille input:checked + span{background:#fff;color:var(--brand);border-color:#fff;font-weight:700}
.pastille input:focus-visible + span{outline:3px solid #9fb0ff;outline-offset:3px}
.pastille .tarif{font-weight:800;opacity:.62;margin-left:3px;white-space:nowrap}
.pastille input:checked + span .tarif{opacity:.72}
.sous-legende{margin:22px 0 10px;font-size:15.5px;font-weight:700}
.sous-legende em{font-style:normal;font-weight:600;opacity:.6;font-size:13.5px}
.champs{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.champ{display:flex;flex-direction:column;gap:6px;font-size:14.5px}
.champ--large{margin-top:16px}
.champ span{opacity:.85}
.champ span em{font-style:normal;opacity:.65;font-size:13px}
.champ input,.champ textarea{background:rgba(255,255,255,.1);border:1.5px solid rgba(255,255,255,.26);
       border-radius:10px;padding:13px 15px;color:#fff;font:inherit;font-size:16px;width:100%}
.champ input::placeholder{color:rgba(255,255,255,.45)}
.champ input:focus,.champ textarea:focus{outline:none;border-color:#fff;background:rgba(255,255,255,.17)}
.demande-verifie .champ input:invalid{border-color:#ff9c9c;background:rgba(255,120,120,.12)}
.recap{background:rgba(255,255,255,.1);border:1.5px solid rgba(255,255,255,.22);border-radius:13px;
       padding:20px 22px;margin:8px 0 22px}
.recap-t{margin:0 0 6px;font-size:12px;letter-spacing:2px;text-transform:uppercase;font-weight:800;color:#c3cffa}
.recap-vide{margin:0;font-size:18px;font-weight:700;line-height:1.45}
.recap-lignes{list-style:none;margin:0;padding:0}
.recap-lignes:empty{display:none}
.recap-lignes li{display:flex;align-items:baseline;gap:10px;padding:9px 0;
  border-bottom:1px solid rgba(255,255,255,.14)}
.recap-lignes .q{flex:1;font-size:16px;font-weight:600;line-height:1.35}
.recap-lignes .q em{display:block;font-style:normal;font-size:13.5px;font-weight:500;opacity:.7;margin-top:2px}
.recap-lignes .t{font-size:16px;font-weight:800;white-space:nowrap}
.recap-lignes .t.att{font-weight:600;font-size:13.5px;opacity:.7;white-space:normal;text-align:right;max-width:46%}
.recap-totaux{margin-top:12px}
.recap-totaux:empty{display:none}
.recap-totaux div{display:flex;align-items:baseline;gap:10px;padding:4px 0;font-size:17px;font-weight:800}
.recap-totaux div span{flex:1;text-transform:uppercase;letter-spacing:1.2px;font-size:12px;color:#c3cffa}
.recap-note{margin:10px 0 0;font-size:13.5px;opacity:.72;line-height:1.5}
.recap-note:empty{display:none}
.envoi{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.envoi .cta{border:0;cursor:pointer;font-family:inherit}
.demande .secours{margin:0;font-size:15.5px;opacity:.9}
.demande .secours a{color:#fff;font-weight:700}
.erreur{margin:14px 0 0;color:#ffc9c9;font-weight:700}
.merci{background:rgba(255,255,255,.12);border:1.5px solid rgba(255,255,255,.3);border-radius:14px;padding:34px 30px}
.merci h3{margin:0 0 10px;font-size:23px}
.merci p{margin:0;opacity:.9;line-height:1.6}
@media(max-width:900px){
  .cartes,.champs{grid-template-columns:1fr}
  .demande h2{font-size:27px}
}
.final{background:var(--bg-soft);color:var(--text);text-align:center;padding:52px 20px}
.final h2{font-size:28px;margin-bottom:12px}
.final p{color:var(--muted);max-width:620px;margin:0 auto 22px}
.final .cta{background:var(--brand);color:#fff}

@media(max-width:900px){
  .hero h1{font-size:32px}
  .hero .grille,.pourqui,.offres,.emissions,.rien,.etapes{grid-template-columns:1fr}
  .demo{padding:22px 18px}
  .deux-lieux{grid-template-columns:1fr}
  .pilier{grid-template-columns:1fr;gap:14px}
  .pilier .n{font-size:40px}
  .releve{grid-template-columns:1fr;gap:16px}
  h2{font-size:27px}
  .sommaire a.ecrire{margin-left:0}
}
@media(min-width:901px) and (max-width:1060px){ .emissions{grid-template-columns:repeat(2,1fr)} }

/* retour vers le site : la page vit dans la rubrique Sponsoring, le visiteur
   doit pouvoir repartir vers le reste de Tandem TV. */
.sommaire a.retour{font-weight:800;color:var(--brand);padding-left:0;padding-right:16px;
                   margin-right:6px;border-right:1px solid var(--line);border-radius:0}
.sommaire a.retour:hover{background:transparent;text-decoration:underline}

/* pied de page */
.pied{background:var(--brand);color:#fff;padding:40px 0 46px}
.pied-n{margin:0;font-size:19px;font-weight:800;letter-spacing:-.3px}
.pied-d{margin:4px 0 16px;font-size:15px;opacity:.72}
.pied-l{display:flex;flex-wrap:wrap;gap:8px 22px}
.pied-l a{color:#fff;opacity:.85;text-decoration:none;font-size:15px;font-weight:600}
.pied-l a:hover{opacity:1;text-decoration:underline}