body{margin:0;font-family:Arial,Helvetica,sans-serif;background:#f6f8fb;color:#111}
.hero{background:#1876d1;color:#fff;text-align:center;padding:40px 16px}
.main{display:grid;place-items:center;padding:40px 16px}
.card{background:#fff;max-width:540px;width:100%;padding:24px;border-radius:12px;box-shadow:0 8px 24px rgba(0,0,0,.08);text-align:center}
input[type=email]{padding:10px 12px;border:1px solid #cbd5e1;border-radius:8px;min-width:260px}
button{padding:10px 14px;border-radius:8px;border:0;background:#1876d1;color:#fff;margin-left:8px;cursor:pointer}
button:hover{filter:brightness(1.05)}
.muted{color:#475569}
.hidden{display:none}
.foot{padding:20px;text-align:center;color:#64748b}
a{color:#1876d1}