.nrfl-shell{
  --nrfl-text:#111827;
  --nrfl-muted:#6b7280;
  --nrfl-border:#e5e7eb;
  --nrfl-soft:#f8fafc;
  --nrfl-bg:#ffffff;
  --nrfl-shadow:0 18px 40px rgba(15,23,42,.08);
  --nrfl-radius:22px;
  max-width:560px;
  margin:28px auto;
  color:var(--nrfl-text);
}
.nrfl-theme-clean{--nrfl-soft:#f9fafb;--nrfl-shadow:0 12px 30px rgba(15,23,42,.05);--nrfl-radius:20px}
.nrfl-theme-minimal{--nrfl-soft:#fff;--nrfl-shadow:none;--nrfl-radius:16px}
.nrfl-card{
  background:radial-gradient(circle at top right, rgba(31,41,55,.05), transparent 28%), linear-gradient(180deg,#fff,var(--nrfl-bg));
  border:1px solid var(--nrfl-border);
  border-radius:var(--nrfl-radius);
  box-shadow:var(--nrfl-shadow);
  overflow:hidden;
}
.nrfl-card-head{padding:28px 28px 18px;border-bottom:1px solid var(--nrfl-border);background:linear-gradient(180deg,rgba(248,250,252,.85),rgba(255,255,255,.95))}
.nrfl-kicker{display:inline-flex;align-items:center;padding:7px 12px;border-radius:999px;background:var(--nrfl-soft);border:1px solid var(--nrfl-border);color:#374151;font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase}
.nrfl-title{margin:14px 0 8px;font-size:30px;line-height:1.15;font-weight:800}
.nrfl-subtitle{margin:0;color:var(--nrfl-muted);font-size:15px;line-height:1.75}
.nrfl-card-body{padding:26px 28px 30px}
.nrfl-notice{margin-bottom:14px;padding:13px 14px;border-radius:14px;background:#fef2f2;border:1px solid #fecaca;color:#991b1b;font-size:14px;line-height:1.6}
.nrfl-form{display:grid;gap:16px}
.nrfl-field{display:grid;gap:7px}
.nrfl-field label{font-size:14px;font-weight:700;color:#1f2937}
.nrfl-field input{padding:13px 14px;border:1px solid #d1d5db;background:#fff;color:#111827;border-radius:14px;outline:none;font-size:15px;line-height:1.45;transition:border-color .18s ease, box-shadow .18s ease}
.nrfl-field input:focus{border-color:#9ca3af;box-shadow:0 0 0 4px rgba(17,24,39,.08)}
.nrfl-row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.nrfl-remember{display:flex;align-items:center;gap:8px;font-size:14px;color:#374151}
.nrfl-forgot,.nrfl-link{font-size:14px;color:#111827;text-decoration:none}
.nrfl-forgot:hover,.nrfl-link:hover{text-decoration:underline}
.nrfl-btn{appearance:none;display:inline-block;text-align:center;border:none;border-radius:16px;padding:15px 22px;font-size:15px;font-weight:800;letter-spacing:.01em;background:linear-gradient(135deg,#111827,#374151);color:#fff;text-decoration:none;cursor:pointer;box-shadow:0 12px 24px rgba(17,24,39,.16);transition:transform .18s ease, box-shadow .18s ease, opacity .18s ease}
.nrfl-btn:hover{transform:translateY(-1px);box-shadow:0 16px 28px rgba(17,24,39,.18)}
@media (max-width:640px){
  .nrfl-card-head,.nrfl-card-body{padding-left:20px;padding-right:20px}
  .nrfl-title{font-size:24px}
  .nrfl-btn{width:100%}
}