:root{--bleu:#2563eb;--bleu-f:#1d4ed8;--encre:#0f172a;--texte:#334155;--doux:#64748b;--trait:#e2e8f0;--fond:#f8fafc;--vert:#059669}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--texte);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--bleu);text-decoration:none}
.c{max-width:1080px;margin:0 auto;padding:0 20px}
h1,h2,h3{color:var(--encre);line-height:1.2}
h2{font-size:clamp(1.6rem,3.5vw,2.2rem);margin-bottom:12px}
.sous{color:var(--doux);font-size:1.05rem;max-width:640px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 22px;border-radius:12px;font-weight:600;font-size:.98rem;border:1.5px solid transparent;cursor:pointer;transition:.15s;white-space:nowrap}
.btn-p{background:var(--bleu);color:#fff}.btn-p:hover{background:var(--bleu-f)}
.btn-s{background:#fff;color:var(--encre);border-color:var(--trait)}.btn-s:hover{border-color:#cbd5e1}
.btn-l{background:transparent;color:var(--bleu);padding:13px 6px}
/* En-tête */
header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--trait)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;color:var(--encre)}
.logo img{width:32px;height:32px;border-radius:8px}
.liens{display:flex;align-items:center;gap:22px}
.liens a.n{color:var(--texte);font-weight:500;font-size:.95rem}.liens a.n:hover{color:var(--encre)}
.liens .btn{padding:9px 16px;font-size:.9rem}
@media(max-width:820px){.liens a.n{display:none}}
/* Accroche */
.hero{padding:76px 0 64px;background:linear-gradient(180deg,#eff6ff 0%,#fff 100%)}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);max-width:820px;letter-spacing:-.02em}
.hero p{margin:20px 0 30px;font-size:1.15rem;max-width:660px}
.actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.preuve{margin-top:26px;display:flex;flex-wrap:wrap;gap:8px 22px;color:var(--doux);font-size:.92rem}
.preuve span::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--vert);margin-right:8px;vertical-align:middle}
section{padding:72px 0}
section.gris{background:var(--fond);border-top:1px solid var(--trait);border-bottom:1px solid var(--trait)}
/* Fonctions */
.grille{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-top:36px}
.carte{background:#fff;border:1px solid var(--trait);border-radius:16px;padding:22px}
.carte h3{font-size:1.05rem;margin:12px 0 6px}
.carte p{font-size:.95rem;color:var(--doux)}
.ico{width:40px;height:40px;border-radius:11px;background:#eff6ff;display:flex;align-items:center;justify-content:center}
.ico svg{width:21px;height:21px;stroke:var(--bleu);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
/* Histoire */
.histoire{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center}
.histoire blockquote{font-size:1.15rem;color:var(--encre);border-left:4px solid var(--bleu);padding-left:18px}
.histoire .sign{margin-top:12px;color:var(--doux);font-size:.95rem}
.liste{list-style:none;display:grid;gap:12px}
.liste li{padding-left:28px;position:relative}
.liste li::before{content:"";position:absolute;left:0;top:7px;width:14px;height:8px;border-left:2.5px solid var(--vert);border-bottom:2.5px solid var(--vert);transform:rotate(-45deg)}
@media(max-width:820px){.histoire{grid-template-columns:1fr}}
/* Tarifs */
.offre{margin-top:28px;background:var(--encre);color:#fff;border-radius:16px;padding:20px 24px;display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between}
.offre strong{font-size:1.1rem}.offre span{color:#cbd5e1;font-size:.95rem}
.prix{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-top:20px}
.plan{border:1px solid var(--trait);border-radius:16px;padding:24px;background:#fff}
.plan.fort{border:2px solid var(--bleu)}
.plan h3{font-size:1rem;color:var(--doux);font-weight:600}
.plan .m{font-size:2.3rem;font-weight:800;color:var(--encre);margin:6px 0 2px}
.plan .m small{font-size:1rem;font-weight:500;color:var(--doux)}
.plan p{font-size:.92rem;color:var(--doux)}
.inclus{margin-top:22px;display:flex;flex-wrap:wrap;gap:8px 24px;font-size:.93rem}
.note{margin-top:14px;font-size:.85rem;color:var(--doux)}
/* Installer */
.installer{display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;background:linear-gradient(135deg,var(--bleu),var(--bleu-f));color:#fff;border-radius:20px;padding:34px}
.installer h2{color:#fff}.installer p{color:#dbeafe;max-width:560px}
.installer .btn-s{border:none}
/* Formulaire */
form.f{margin-top:28px;display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:760px}
.f label{display:block;font-size:.88rem;font-weight:600;color:var(--encre);margin-bottom:6px}
.f input,.f select,.f textarea{width:100%;padding:11px 13px;border:1.5px solid var(--trait);border-radius:10px;font:inherit;font-size:.97rem;background:#fff;color:var(--encre)}
.f input:focus,.f select:focus,.f textarea:focus{outline:none;border-color:var(--bleu)}
.f .plein{grid-column:1/-1}
.f .ok{font-size:.87rem;color:var(--doux);display:flex;gap:10px;align-items:flex-start;font-weight:400}
.f .ok input{width:auto;margin-top:3px}
.piege{position:absolute;left:-9999px;height:0;overflow:hidden}
.retour{grid-column:1/-1;padding:14px 16px;border-radius:10px;font-size:.95rem;display:none}
.retour.bon{display:block;background:#ecfdf5;color:#065f46}.retour.mal{display:block;background:#fef2f2;color:#991b1b}
@media(max-width:640px){form.f{grid-template-columns:1fr}}
/* Pied */
footer{border-top:1px solid var(--trait);padding:32px 0;color:var(--doux);font-size:.9rem}
.pied{display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;align-items:center}
.pied nav{display:flex;flex-wrap:wrap;gap:8px 22px}.pied a{color:var(--doux)}.pied a:hover{color:var(--encre)}
/* Pages de texte */
.doc{max-width:760px;padding:56px 20px 80px;margin:0 auto}
.doc h1{font-size:2rem;margin-bottom:8px}.doc .maj{color:var(--doux);margin-bottom:32px}
.doc h2{font-size:1.2rem;margin:32px 0 10px}.doc p,.doc li{margin-bottom:10px}.doc ul{padding-left:22px}
.a-completer{background:#fef3c7;padding:1px 6px;border-radius:4px}