* { margin: 0; padding: 0; box-sizing: border-box; }
body.admin { font-family: system-ui, sans-serif; }
body.portal { font-family: system-ui, sans-serif; background: #0f172a;
  min-height: 100vh; display: flex; align-items: center; justify-content: center; }
main.card { background: #fff; border-radius: 16px; padding: 32px 28px; max-width: 420px; width: 92%;
  text-align: center; box-shadow: 0 20px 40px rgba(0,0,0,.4); }
.portal h1 { font-size: 1.3rem; margin-bottom: 12px; }
.portal p { margin-bottom: 14px; line-height: 1.5; }
.portal .muted { color: #64748b; font-size: .85rem; }
.portal code { background: #f1f5f9; padding: 2px 6px; border-radius: 6px; font-size: .8rem; }
.portal .qr { margin: 18px auto; }
.portal .qr img { width: 220px; height: 220px; border: 1px solid #e2e8f0; border-radius: 12px; }
.portal .btn { display: inline-block; background: #22c55e; color: #fff; font-weight: 600;
  border-radius: 10px; padding: 12px 24px; text-decoration: none; margin: 4px 2px; }
.portal .btn:hover { background: #16a34a; }