:root{
  --join-bg:#f4f5f7;
  --join-surface:#ffffff;
  --join-border:#e2e5eb;
  --join-ink:#1f2430;
  --join-muted:#6b7280;
  --join-accent:#2f6f4f;
  --join-accent-dark:#234f39;
  --join-danger:#c0392b;
}
.join-shell{min-height:100vh;background:var(--join-bg);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--join-ink);padding:3rem 1.25rem;}

.join-header{display:flex;flex-direction:column;align-items:center;gap:1.5rem;max-width:720px;margin:0 auto 2rem;text-align:center;}
.join-logos{display:flex;align-items:center;gap:1.5rem;}
.join-logos img{max-height:56px;width:auto;}
.join-logos-divider{width:1px;height:34px;background:var(--join-border);}
.join-header h1{margin:0;font-size:clamp(1.9rem,4vw,2.6rem);}
.join-header p{margin:0;color:var(--join-muted);max-width:480px;font-size:.95rem;}

.join-card{max-width:720px;margin:0 auto;}
.join-form{background:var(--join-surface);border:1px solid var(--join-border);border-radius:16px;padding:2.75rem;box-shadow:0 20px 50px rgba(20,20,30,.06);}

.join-step-label{font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--join-accent);margin:0 0 .4rem;}
.join-step-heading{font-size:1.5rem;margin:0 0 .3rem;}
.join-sub{color:var(--join-muted);font-size:.9rem;margin:0 0 2rem;}
.join-divider{margin:3rem 0 2rem;padding-top:2rem;border-top:1px solid var(--join-border);}

.join-row{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem;}
.join-field{margin-bottom:1.25rem;}
.join-field label{display:block;font-size:.82rem;font-weight:600;margin-bottom:.4rem;}
.join-field .req{color:var(--join-danger);}
.join-field input[type=text],
.join-field input[type=email],
.join-field input[type=tel],
.join-field input[type=date]{
  width:100%;padding:.65rem .8rem;border:1px solid var(--join-border);border-radius:8px;font-size:.92rem;font-family:inherit;background:#fff;color:var(--join-ink);
}
.join-field select{width:100%;padding:.65rem .8rem;border:1px solid var(--join-border);border-radius:8px;font-size:.92rem;font-family:inherit;background:#fff;color:var(--join-ink);}
.join-field input:focus,.join-field select:focus{outline:0;border-color:var(--join-accent);}
.join-field .hint{color:var(--join-muted);font-size:.78rem;margin-top:.3rem;}
.join-checkbox-row{display:flex!important;align-items:center;gap:.5rem;font-size:.9rem!important;font-weight:400!important;margin:0!important;cursor:pointer;}
.join-checkbox-row input{width:17px;height:17px;margin:0;}

.join-choice-group{margin-bottom:1.75rem;}
.join-choice-group>label{display:block;font-size:.95rem;font-weight:600;margin-bottom:.75rem;}
.join-choices{display:flex;flex-wrap:wrap;gap:.75rem;}
.join-choice{position:relative;}
.join-choice input{position:absolute;opacity:0;width:0;height:0;}
.join-choice span{display:inline-flex;align-items:center;padding:.6rem 1.1rem;border:1.5px solid var(--join-border);border-radius:999px;font-size:.87rem;cursor:pointer;transition:border-color .15s ease,background-color .15s ease,color .15s ease;}
.join-choice input:checked+span{border-color:var(--join-accent);background:var(--join-accent);color:#fff;}
.join-choice input:focus-visible+span{outline:2px solid var(--join-accent);outline-offset:2px;}

.join-submit-row{margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--join-border);}
.btn-join{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.4rem;border-radius:999px;font-size:.88rem;font-weight:700;border:1.5px solid var(--join-accent);cursor:pointer;background:var(--join-accent);color:#fff;}
.btn-join:hover{background:var(--join-accent-dark);border-color:var(--join-accent-dark);}

.join-alert{padding:1rem 1.25rem;border-radius:10px;margin-bottom:1.5rem;font-size:.9rem;}
.join-alert-success{background:#e5f3ea;color:var(--join-accent-dark);border:1px solid #c9e7d4;}
.join-alert-error{background:#fbe9e7;color:var(--join-danger);border:1px solid #f3c9c3;}
.join-error{color:var(--join-danger);font-size:.78rem;margin-top:.3rem;}

@media(max-width:600px){
  .join-form{padding:1.75rem;}
  .join-row{grid-template-columns:1fr;}
  .join-submit-row .btn-join{width:100%;justify-content:center;}
}