:root{
  --nuit:#0E2233; --cyan:#00D3CD; --bleu:#0080FF;
  --gris:#5B6B7B; --gris-clair:#A9B8C6; --gris2:#4E5D6C;
  --fond:#F4F7FA; --ligne:#DCE3EA; --erreur:#C62839;
  --grad:linear-gradient(90deg,var(--cyan),var(--bleu));
  --radius:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Montserrat,system-ui,sans-serif;font-weight:500;color:var(--nuit);background:var(--fond);line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--bleu)}
.wrap{width:100%;max-width:760px;margin:0 auto;padding:0 16px}
.band{height:5px;background:var(--grad)}

/* Hero */
.hero{background:var(--nuit);color:#fff;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:auto -20% -60% auto;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,128,255,.28),rgba(0,211,205,0) 70%);pointer-events:none}
.hero-inner{padding:40px 16px 48px;position:relative}
.hero-logo{width:min(300px,78%);height:auto;display:block;margin-bottom:36px}
h1{font-size:clamp(28px,6.4vw,44px);line-height:1.15;font-weight:700;margin:0 0 16px;letter-spacing:-.01em}
.grad{color:#3DF5EE}
.lead{color:var(--gris-clair);font-size:17px;max-width:620px;margin:0 0 28px}
.services{list-style:none;padding:0;margin:32px 0 0;display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;color:var(--gris-clair);font-weight:600}
.services li{display:flex;align-items:center;gap:8px}
.dot{width:8px;height:8px;border-radius:2px;background:var(--grad);transform:rotate(45deg)}

/* Buttons */
.btn{display:inline-block;border:0;border-radius:999px;padding:15px 28px;font:700 16px Montserrat,sans-serif;cursor:pointer;text-decoration:none;transition:transform .15s,box-shadow .15s}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(0,128,255,.3)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 28px rgba(0,128,255,.4)}
.btn-primary:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}
.btn-block{width:100%;margin-top:8px}
.btn[disabled]{opacity:.6;cursor:wait}

/* Card / form */
main{padding:0 16px}
.card{background:#fff;border-radius:var(--radius);box-shadow:0 10px 40px rgba(14,34,51,.08);padding:28px 20px;margin:-24px auto 48px;position:relative;scroll-margin-top:16px}
@media(min-width:640px){.card{padding:40px 44px}}
fieldset{border:0;padding:0;margin:0 0 32px}
legend{font-size:19px;font-weight:700;display:flex;align-items:center;gap:12px;margin-bottom:18px;padding:0}
.step{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--nuit);color:#fff;font-size:14px;flex:none}
.field{margin-bottom:18px}
.label{display:block;font-weight:600;font-size:14px;margin-bottom:8px}
.req{color:var(--bleu)}
.opt{color:var(--gris);font-weight:500;font-size:.85em}
.hint{display:block;color:var(--gris2);font-size:13px;margin-top:8px}
.hint.block{margin:-6px 0 14px}
.center{text-align:center}
.grid2{display:grid;gap:0 16px}
@media(min-width:640px){.grid2{grid-template-columns:1fr 1fr}}

input[type=text],input[type=email],input[type=tel],select,textarea{
  width:100%;font:500 16px Montserrat,sans-serif;color:var(--nuit);background:#fff;
  border:1.5px solid var(--ligne);border-radius:10px;padding:13px 14px;transition:border-color .15s,box-shadow .15s}
textarea{resize:vertical;min-height:120px}
select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%235B6B7B' stroke-width='2'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--bleu);box-shadow:0 0 0 3px rgba(0,128,255,.15)}
::placeholder{color:#9AA7B4}

/* Chips */
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{position:relative;cursor:pointer}
.chip input{position:absolute;opacity:0;inset:0;cursor:pointer}
.chip span{display:inline-block;padding:10px 16px;border:1.5px solid var(--ligne);border-radius:999px;font-size:14px;font-weight:600;color:var(--gris2);transition:all .15s;user-select:none}
.chip:hover span{border-color:var(--gris-clair)}
.chip input:checked+span{background:var(--nuit);border-color:var(--nuit);color:#fff}
.chip input:focus-visible+span{outline:3px solid var(--cyan);outline-offset:2px}

/* Files */
.files{display:grid;gap:10px}
.file{display:flex;align-items:center;gap:12px;border:1.5px dashed var(--ligne);border-radius:10px;padding:12px 14px;cursor:pointer;position:relative;min-width:0}
.file:hover{border-color:var(--bleu)}
.file input{position:absolute;opacity:0;inset:0;cursor:pointer}
.file-btn{font-weight:600;font-size:14px;color:var(--bleu);flex:none}
.file-name{font-size:13px;color:var(--gris2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.file.has .file-btn{color:var(--nuit)}
.file.has{border-style:solid;border-color:var(--cyan);background:rgba(0,211,205,.05)}

/* Consent */
.consent{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--gris2);cursor:pointer;margin-top:6px}
.consent input{width:20px;height:20px;margin:2px 0 0;accent-color:var(--bleu);flex:none}

/* Errors */
.err{display:none;color:var(--erreur);font-size:13px;font-weight:600;margin:6px 0 0}
.invalid .err,.err.show{display:block}
.invalid input,.invalid textarea{border-color:var(--erreur)}

/* Honeypot */
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* Footer */
.footer{background:var(--nuit);color:var(--gris-clair);font-size:14px}
.footer-inner{display:flex;align-items:center;gap:14px;padding:28px 16px;flex-wrap:wrap}
.footer strong{color:#fff}
.footer a{color:var(--gris-clair)}
.footer .small{margin-left:auto;font-size:13px}

/* Simple pages */
.page{background:#fff;border-radius:var(--radius);box-shadow:0 10px 40px rgba(14,34,51,.08);padding:32px 22px;margin:32px auto 48px}
@media(min-width:640px){.page{padding:44px}}
.page h1{font-size:clamp(24px,5vw,32px)}
.page h2{font-size:18px;margin:28px 0 8px}
.page p,.page li{color:var(--gris2)}
.top{background:var(--nuit)}
.top .wrap{padding:20px 16px}
.top img{width:200px;height:auto;display:block}
.check{width:64px;height:64px;border-radius:50%;background:var(--grad);display:grid;place-items:center;margin-bottom:20px}