/* 注册 / 登录页 */
.auth-body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(900px 500px at 10% 0%, rgba(37, 99, 235, 0.14), transparent 55%),
    radial-gradient(700px 420px at 100% 80%, rgba(14, 165, 233, 0.1), transparent 50%),
    #f1f5f9;
}
.auth-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  max-width: 1080px;
  margin: 0 auto;
}
.auth-brand {
  padding: 48px 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: var(--text);
}
.auth-brand .brand { margin-bottom: 28px; }
.auth-brand h1 {
  font-size: clamp(28px, 3.6vw, 40px);
  line-height: 1.2;
  margin: 0 0 14px;
  letter-spacing: -0.02em;
}
.auth-brand p {
  color: var(--muted);
  line-height: 1.7;
  margin: 0 0 20px;
  max-width: 28em;
}
.auth-brand ul {
  margin: 0;
  padding-left: 1.1em;
  color: #334155;
  line-height: 1.9;
  font-size: 14px;
}
.auth-card {
  margin: 32px 24px;
  align-self: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
  padding: 28px 28px 22px;
}
.auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  background: #f1f5f9;
  border-radius: 14px;
  padding: 5px;
  margin-bottom: 22px;
}
.auth-tab {
  border: 0;
  background: transparent;
  border-radius: 11px;
  padding: 10px 12px;
  font-weight: 700;
  font-size: 14px;
  color: var(--muted);
  cursor: pointer;
}
.auth-tab.active {
  background: #fff;
  color: var(--text);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
}
.auth-form .field { margin: 0 0 14px; }
.btn-block { width: 100%; margin-top: 6px; }
.code-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}
.code-row .btn { white-space: nowrap; }
.auth-foot {
  margin: 18px 0 0;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}
.auth-foot a { color: var(--muted); }
.auth-foot a:hover { color: var(--blue); }

@media (max-width: 860px) {
  .auth-shell { grid-template-columns: 1fr; }
  .auth-brand { padding: 28px 22px 8px; }
  .auth-brand ul { display: none; }
  .auth-card { margin: 8px 16px 28px; }
}