.page-auth {
  min-height: 100vh;
  background:
    radial-gradient(900px 400px at 0% 0%, rgba(15,111,159,.12), transparent 55%),
    radial-gradient(700px 360px at 100% 0%, rgba(245,130,32,.10), transparent 50%),
    #f4f7fb;
  display: flex; flex-direction: column;
}
.auth-top {
  width: min(100% - 2rem, 960px); margin: 1.25rem auto 0;
}
.auth-shell {
  width: min(100% - 2rem, 640px); margin: 1.5rem auto 2rem; flex: 1;
}
.auth-card {
  background: #fff; border: 1px solid var(--line); border-radius: 20px;
  box-shadow: var(--shadow); padding: 1.75rem;
}
.auth-card--wide { width: 100%; }
.auth-card h1 { font-size: 1.55rem; }
.auth-card__lead { color: var(--muted); }
.auth-card__links {
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  margin-top: 1.25rem; font-weight: 600;
}
.flash-stack--auth { width: 100%; margin: 0 0 1rem; }
.auth-foot {
  text-align: center; color: var(--muted); font-size: .9rem; padding-bottom: 1.5rem;
}

@media (max-width: 640px) {
  .auth-card { padding: 1.25rem; }
}