:root{--bg:#0b0f19;--surface:rgba(23,32,48,.75);--text:#f8fafc;--muted:#94a3b8;--accent:#3b82f6;--accent2:#8b5cf6;--border:rgba(255,255,255,.1);--err:#fca5a5}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);background-image:radial-gradient(circle at 15% 20%,rgba(59,130,246,.14),transparent 40%),radial-gradient(circle at 85% 70%,rgba(139,92,246,.12),transparent 40%);background-attachment:fixed;color:var(--text);line-height:1.6;min-height:100vh}
.wrap{max-width:640px;margin:0 auto;padding:56px 16px 40px}
.kicker{font-size:.8rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:#60a5fa;margin-bottom:12px}
h1{font-family:'Outfit',sans-serif;font-size:clamp(2rem,6vw,2.8rem);line-height:1.12;letter-spacing:-.02em;background:linear-gradient(135deg,#fff 0%,#a5b4fc 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:16px}
.lead{color:var(--muted);font-size:1.05rem;margin-bottom:24px}
.puces{list-style:none;margin-bottom:32px;display:grid;gap:10px}
.puces li{position:relative;padding-left:30px;font-size:.98rem}
.puces li::before{content:'✓';position:absolute;left:0;top:1px;width:20px;height:20px;border-radius:50%;background:rgba(59,130,246,.2);color:#93c5fd;font-size:.75rem;display:grid;place-items:center}
.carte{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:24px;backdrop-filter:blur(12px)}
label{display:block;font-size:.85rem;font-weight:500;color:var(--muted);margin:0 0 6px}
input[type=text],input[type=email]{width:100%;padding:13px 14px;margin-bottom:16px;background:rgba(15,23,42,.8);border:1px solid var(--border);border-radius:10px;color:var(--text);font:inherit;font-size:1rem}
input:focus{outline:2px solid var(--accent);outline-offset:1px}
.check-l{display:flex;gap:10px;align-items:flex-start;font-size:.8rem;line-height:1.45;margin:4px 0 20px}
.check-l input{margin-top:3px;flex:none;width:17px;height:17px}
.piege{position:absolute;left:-9999px;height:0;overflow:hidden}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:15px 22px;border:0;border-radius:12px;font:inherit;font-weight:600;font-size:1.02rem;color:#fff;text-decoration:none;cursor:pointer;transition:transform .15s,filter .15s}
.btn:hover{transform:translateY(-1px);filter:brightness(1.08)}
.btn:focus-visible{outline:3px solid #93c5fd;outline-offset:2px}
.btn-main{background:linear-gradient(135deg,var(--accent),var(--accent2));box-shadow:0 10px 28px -10px rgba(59,130,246,.7)}
.btn-yt{background:#e11d48;font-size:1.15rem;padding:20px 22px;box-shadow:0 14px 34px -10px rgba(225,29,72,.75)}
.erreur{background:rgba(220,38,38,.15);border:1px solid rgba(248,113,113,.4);color:var(--err);padding:10px 14px;border-radius:10px;margin-bottom:16px;font-size:.9rem}
.info{background:rgba(59,130,246,.12);border:1px solid rgba(96,165,250,.35);color:#bfdbfe;padding:10px 14px;border-radius:10px;margin-bottom:16px;font-size:.9rem}
.deja{margin-bottom:14px;color:var(--muted)}
.pied{margin-top:36px;text-align:center;color:#64748b;font-size:.8rem}
/* page de remerciement */
.merci{text-align:center}
.merci .check{width:64px;height:64px;margin:0 auto 18px;border-radius:50%;background:rgba(34,197,94,.15);color:#86efac;font-size:2rem;display:grid;place-items:center}
.merci .lead{margin-bottom:28px}
.cta{background:var(--surface);border:1px solid rgba(225,29,72,.45);border-radius:18px;padding:28px 22px;margin-bottom:22px}
.cta h2{font-family:'Outfit',sans-serif;font-size:1.35rem;margin-bottom:8px}
.cta p{color:var(--muted);margin-bottom:20px}
@media (prefers-reduced-motion:reduce){*{transition:none!important}html{scroll-behavior:auto}}