.nflu-box {
  max-width: 520px;
  padding: 20px;
  border: 1px solid rgba(12, 12, 12, 0.12);
  border-radius: 16px;
  background: #0b0b0c;
  color: #f2efe8;
  font-family: system-ui, sans-serif;
}
.nflu-box h3 { margin: 0 0 12px; font-size: 1.25rem; }
.nflu-box form { display: grid; gap: 10px; }
.nflu-box input {
  height: 44px;
  border-radius: 8px;
  border: 1px solid rgba(242, 239, 232, 0.14);
  background: #1c1c1f;
  color: #f2efe8;
  padding: 0 12px;
}
.nflu-box button, .nflu-btn {
  height: 44px;
  border: 0;
  border-radius: 8px;
  background: #d4c4a8;
  color: #141210;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  padding: 0 16px;
}
.nflu-err { color: #c45c4a; }
.nflu-ok { color: #7a9e7e; }
.nflu-copy { cursor: pointer; }