.login-page {
  min-height: 100vh;
  overflow: hidden;
  background: linear-gradient(120deg, rgba(9,24,21,.82), rgba(18,51,47,.72)), url('faults_bg2.png') center/cover no-repeat fixed;
}
.login-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(340px, 440px);
  gap: clamp(28px, 5vw, 80px);
  align-items: center;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  color: #fff;
}
.login-intro { max-width: 680px; }
.login-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 999px;
  background: rgba(255,255,255,.09);
  backdrop-filter: blur(12px);
  font-weight: 800;
}
.login-brand-mark {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(255,255,255,.15);
}
.login-intro h1 {
  margin: 22px 0 14px;
  font-size: clamp(2.2rem, 4.6vw, 4.8rem);
  line-height: .96;
  letter-spacing: -.06em;
}
.login-intro p {
  max-width: 600px;
  margin: 0;
  color: rgba(255,255,255,.76);
  font-size: 1.06rem;
}
.login-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 26px;
}
.login-feature-grid div {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 12px;
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 16px;
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(12px);
  color: rgba(255,255,255,.88);
}
.login-card {
  padding: 28px;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 28px;
  background: rgba(255,255,255,.92);
  color: var(--text);
  box-shadow: 0 30px 90px rgba(0,0,0,.28);
  backdrop-filter: blur(20px);
}
.login-card-header {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 24px;
}
.login-lock {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 16px;
  color: var(--primary);
  background: var(--bg-soft);
}
.login-card h2 { margin: 2px 0 4px; font-size: 1.75rem; letter-spacing: -.04em; }
.login-card p { margin: 0; color: var(--muted); }
.password-field { position: relative; margin-bottom: 16px; }
.password-field i {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted-2);
}
.password-field input { padding-left: 40px; }
.login-card button { width: 100%; min-height: 46px; }
.error-message {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 14px;
  padding: 11px;
  border-radius: 14px;
  color: var(--danger);
  background: var(--danger-bg);
  font-weight: 750;
}
@media (max-width: 860px) {
  .login-page { overflow: auto; }
  .login-shell { grid-template-columns: 1fr; padding: 34px 0; }
  .login-intro h1 { font-size: 2.35rem; }
  .login-feature-grid { grid-template-columns: 1fr; }
}