/* ── 登录页 ── */
.d2-login-page {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 1rem;
}

.d2-login-box {
  width: 100%;
  max-width: 400px;
}

.d2-login-box .d2-title {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.d2-login-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--d2-stone-border);
}

.d2-login-tab {
  flex: 1;
  padding: 0.6rem;
  text-align: center;
  font-family: var(--font-d2);
  font-size: 0.9rem;
  color: var(--d2-text-dim);
  background: none;
  border: none;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.2s;
}

.d2-login-tab.active {
  color: var(--d2-gold);
  border-bottom: 2px solid var(--d2-gold);
  margin-bottom: -2px;
}

.d2-login-error {
  background: rgba(139, 0, 0, 0.2);
  border: 1px solid var(--d2-red);
  color: #ff8888;
  padding: 0.5rem 0.8rem;
  border-radius: 3px;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  display: none;
}