html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(59,130,246,.14), transparent 28%),
    radial-gradient(circle at bottom right, rgba(15,23,42,.10), transparent 30%),
    linear-gradient(135deg, #edf3f9 0%, #f7f9fc 45%, #edf2f7 100%);
  color: #0f172a;
}

body { display: flex; }

.login-page {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}

.login-shell {
  width: min(1180px, 100%);
  min-height: 700px;
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(226, 232, 240, .92);
  border-radius: 30px;
  overflow: hidden;
  box-shadow: 0 28px 80px rgba(15, 23, 42, 0.10);
}

.login-hero {
  position: relative;
  padding: 28px;
  background: linear-gradient(135deg, #0f172a 0%, #16243d 42%, #1e3a8a 100%);
}

.hero-inner {
  height: 100%;
  border-radius: 26px;
  padding: 46px 42px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background:
    radial-gradient(circle at top right, rgba(96,165,250,.22), transparent 28%),
    linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border: 1px solid rgba(255,255,255,.10);
}

.hero-kicker {
  font-size: 13px;
  letter-spacing: .18em;
  color: rgba(191,219,254,.88);
  text-transform: uppercase;
}

.hero-brand {
  margin-top: 18px;
}

.hero-brand span {
  display: block;
  font-size: 48px;
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -.03em;
  color: #ffffff;
}

.hero-title {
  margin-top: 22px;
  font-size: 30px;
  line-height: 1.28;
  font-weight: 700;
  color: #e2e8f0;
}

.login-hero p {
  margin: 14px 0 0;
  max-width: 560px;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(226,232,240,.82);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 34px;
}

.metric-item {
  min-height: 146px;
  padding: 18px 18px 16px;
  border-radius: 20px;
  background: rgba(255,255,255,.10);
  border: 1px solid rgba(255,255,255,.10);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
  backdrop-filter: blur(6px);
}

.metric-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  background: rgba(96,165,250,.16);
  color: #bfdbfe;
  font-size: 18px;
}

.metric-value {
  font-size: 20px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 8px;
}

.metric-label {
  font-size: 13px;
  line-height: 1.72;
  color: rgba(226,232,240,.76);
}

.login-card-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 42px;
  background: linear-gradient(180deg, rgba(255,255,255,.72), rgba(248,250,252,.96));
}

.login-card {
  width: 100%;
  max-width: 430px;
  display: block;
  padding: 38px 34px 30px;
  border-radius: 26px;
  background: #ffffff;
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
  border: 1px solid rgba(226, 232, 240, .95);
}

.login-card-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 26px;
}

.login-mark {
  width: 50px;
  height: 50px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #fff;
  font-size: 22px;
  box-shadow: 0 14px 24px rgba(37,99,235,.22);
}

.login-title {
  font-size: 30px;
  line-height: 1.15;
  font-weight: 800;
  color: #0f172a;
}

.login-subtitle {
  margin-top: 6px;
  font-size: 14px;
  color: #64748b;
}

.login-error-box { margin-bottom: 18px; }

.login-error-box .alert {
  margin-bottom: 10px;
  border-radius: 14px;
  border: 0;
  box-shadow: 0 8px 20px rgba(15,23,42,.07);
}

.field-block + .field-block { margin-top: 16px; }

.field-label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 600;
  color: #334155;
}

.input-wrap {
  position: relative;
  width: 100%;
}

.input-icon {
  position: absolute;
  top: 50%;
  left: 16px;
  transform: translateY(-50%);
  color: #94a3b8;
  font-size: 18px;
  z-index: 2;
}

.input-wrap .form-control {
  width: 100% !important;
  max-width: 100% !important;
  height: 54px;
  padding-left: 48px;
  border-radius: 14px;
  border: 1px solid #dbe3ee;
  background: #fff;
  box-shadow: none;
  font-size: 15px;
  color: #0f172a;
}

.input-wrap .form-control:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 0 4px rgba(59,130,246,.12);
}

.login-tips {
  display: grid;
  gap: 8px;
  margin-top: 16px;
  color: #64748b;
  font-size: 13px;
}

.login-tips span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.login-tips i { color: #2563eb; }

.login-btn {
  width: 100%;
  margin-top: 24px;
  height: 54px;
  border: 0;
  border-radius: 14px;
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .02em;
  box-shadow: 0 14px 28px rgba(37,99,235,.24);
}

.login-btn:hover,
.login-btn:focus {
  color: #fff;
  background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
}

@media (max-width: 1100px) {
  .hero-metrics { grid-template-columns: 1fr; }
}

@media (max-width: 992px) {
  .login-page {
    padding: 20px;
    align-items: stretch;
  }

  .login-shell {
    grid-template-columns: 1fr;
    min-height: auto;
    border-radius: 24px;
  }

  .login-hero,
  .login-card-wrap {
    padding: 18px;
  }

  .hero-inner {
    padding: 30px 24px;
  }

  .hero-brand span { font-size: 38px; }
  .hero-title {
    font-size: 26px;
    margin-top: 18px;
  }

  .login-hero p {
    font-size: 14px;
    line-height: 1.8;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 24px;
  }

  .metric-item {
    min-height: auto;
    padding: 16px;
  }

  .login-card {
    max-width: 100%;
  }
}

@media (max-width: 576px) {
  .login-page {
    padding: 10px;
  }

  .login-shell {
    width: 100%;
    border-radius: 18px;
  }

  .login-hero {
    padding: 12px;
  }

  .hero-inner {
    border-radius: 16px;
    padding: 22px 16px 18px;
  }

  .hero-kicker {
    font-size: 11px;
    letter-spacing: .12em;
  }

  .hero-brand {
    margin-top: 12px;
  }

  .hero-brand span {
    font-size: 28px;
    line-height: 1.12;
  }

  .hero-title {
    margin-top: 14px;
    font-size: 19px;
    line-height: 1.4;
  }

  .login-hero p {
    margin-top: 10px;
    font-size: 13px;
    line-height: 1.7;
    max-width: 100%;
  }

  .hero-metrics {
    margin-top: 18px;
    gap: 10px;
  }

  .metric-item {
    border-radius: 16px;
    padding: 14px;
  }

  .metric-icon {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    margin-bottom: 10px;
    font-size: 16px;
  }

  .metric-value {
    font-size: 18px;
    margin-bottom: 6px;
  }

  .metric-label {
    font-size: 12px;
    line-height: 1.6;
  }

  .login-card-wrap {
    padding: 12px;
  }

  .login-card {
    padding: 22px 16px 18px;
    border-radius: 16px;
  }

  .login-card-head {
    gap: 10px;
    margin-bottom: 20px;
    align-items: center;
  }

  .login-mark {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    font-size: 18px;
  }

  .login-title {
    font-size: 22px;
  }

  .login-subtitle {
    margin-top: 4px;
    font-size: 12px;
    line-height: 1.5;
  }

  .field-label {
    font-size: 13px;
    margin-bottom: 6px;
  }

  .field-block + .field-block {
    margin-top: 12px;
  }

  .input-icon {
    left: 14px;
    font-size: 16px;
  }

  .input-wrap .form-control {
    height: 48px;
    padding-left: 42px;
    border-radius: 12px;
    font-size: 14px;
  }

  .login-tips {
    gap: 6px;
    margin-top: 12px;
    font-size: 12px;
  }

  .login-btn {
    margin-top: 18px;
    height: 48px;
    border-radius: 12px;
    font-size: 15px;
  }

  .login-error-box .alert {
    border-radius: 12px;
    font-size: 13px;
    padding: 10px 12px;
  }
}