.login-body {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  overflow-y: auto;
  background:
    radial-gradient(1200px 700px at 12% 8%, rgba(35, 92, 173, 0.26), transparent 62%),
    radial-gradient(900px 620px at 88% 92%, rgba(20, 156, 170, 0.18), transparent 66%),
    linear-gradient(150deg, #050b16 0%, #071426 52%, #050c19 100%);
}

.signal-bg {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.signal-bg .grid {
  position: absolute;
  inset: -12%;
  background-image:
    linear-gradient(rgba(95, 227, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(95, 227, 255, 0.055) 1px, transparent 1px);
  background-size: 58px 58px;
  transform: perspective(900px) rotateX(52deg) translateY(-6%);
  transform-origin: 50% 0;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 78%);
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(6px);
}

.orb-a {
  width: 520px;
  height: 520px;
  left: -160px;
  top: -180px;
  background: radial-gradient(circle, rgba(95, 227, 255, 0.16), transparent 66%);
  animation: float 14s ease-in-out infinite;
}

.orb-b {
  width: 420px;
  height: 420px;
  right: -120px;
  bottom: -160px;
  background: radial-gradient(circle, rgba(139, 167, 255, 0.14), transparent 68%);
  animation: float 18s ease-in-out infinite reverse;
}

.pulse-ring {
  position: absolute;
  width: 560px;
  height: 560px;
  left: 4%;
  top: 50%;
  transform: translateY(-50%);
  border-radius: 50%;
  border: 1px solid rgba(95, 227, 255, 0.12);
}

.pulse-ring::before,
.pulse-ring::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(95, 227, 255, 0.16);
  animation: pulse 6s ease-out infinite;
}

.pulse-ring::after {
  animation-delay: 3s;
}

@keyframes pulse {
  0% {
    transform: scale(0.72);
    opacity: 0.65;
  }
  100% {
    transform: scale(1.22);
    opacity: 0;
  }
}

@keyframes float {
  0%, 100% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(10px, -16px, 0);
  }
}

.login-shell {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(420px, 0.75fr);
  align-items: center;
  gap: 48px;
  padding: 56px 7vw;
}

.brand-panel {
  max-width: 640px;
  animation: rise 0.8s ease both;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.brand-emblem {
  position: relative;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: linear-gradient(140deg, rgba(95, 227, 255, 0.24), rgba(139, 167, 255, 0.08));
  border: 1px solid rgba(95, 227, 255, 0.4);
  box-shadow: 0 0 30px rgba(95, 227, 255, 0.18) inset;
}

.brand-emblem::before,
.brand-emblem::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1.5px solid var(--cyan);
}

.brand-emblem::before {
  width: 22px;
  height: 22px;
  opacity: 0.85;
}

.brand-emblem::after {
  width: 8px;
  height: 8px;
  background: var(--cyan);
  border: 0;
  box-shadow: 0 0 14px rgba(95, 227, 255, 0.9);
}

.brand-word {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-word strong {
  font-size: 17px;
  letter-spacing: 0.16em;
  font-weight: 600;
}

.brand-word span {
  font-size: 14px;
  letter-spacing: 0.34em;
  color: var(--text-3);
  margin-top: 4px;
}

.brand-panel h1 {
  margin: 0;
  font-size: clamp(38px, 4.2vw, 58px);
  line-height: 1.1;
  letter-spacing: 0.04em;
  font-weight: 600;
}

.brand-panel h1 em {
  font-style: normal;
  color: var(--cyan);
  text-shadow: 0 0 34px rgba(95, 227, 255, 0.42);
}

.brand-sub {
  margin: 18px 0 0;
  font-family: var(--font-num);
  font-size: 14px;
  letter-spacing: 0.3em;
  color: rgba(157, 176, 201, 0.72);
}

.brand-desc {
  margin: 26px 0 0;
  max-width: 520px;
  font-size: 14px;
  line-height: 2;
  color: var(--text-2);
}

.brand-stats {
  display: flex;
  gap: 12px;
  margin-top: 38px;
  flex-wrap: wrap;
}

.stat-chip {
  min-width: 132px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(95, 227, 255, 0.13);
  background: rgba(11, 25, 44, 0.55);
  backdrop-filter: blur(8px);
}

.stat-chip b {
  display: block;
  font-family: var(--font-num);
  font-size: 24px;
  font-weight: 600;
  color: var(--text);
}

.stat-chip span {
  display: block;
  margin-top: 5px;
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--text-3);
}

.brand-foot {
  margin-top: 44px;
  font-size: 14px;
  letter-spacing: 0.1em;
  color: rgba(107, 128, 156, 0.8);
}

.login-card {
  width: 100%;
  max-width: 430px;
  justify-self: end;
  padding: 38px 36px 30px;
  border-radius: 24px;
  border: 1px solid rgba(95, 227, 255, 0.16);
  background: linear-gradient(160deg, rgba(19, 38, 63, 0.86), rgba(8, 18, 33, 0.9));
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(18px);
  animation: rise 0.9s 0.08s ease both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}

.login-head h2 {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.login-head p {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--text-3);
  letter-spacing: 0.06em;
}

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid rgba(105, 240, 192, 0.24);
  background: rgba(105, 240, 192, 0.08);
  color: var(--mint);
  font-size: 14px;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.live-badge i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 8px var(--mint);
  animation: blink 2s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.field {
  display: block;
  margin-bottom: 18px;
}

.field > span {
  display: block;
  margin-bottom: 9px;
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--text-2);
}

.field input {
  width: 100%;
  height: 46px;
  padding: 0 14px;
  border-radius: 11px;
  border: 1px solid rgba(120, 155, 195, 0.2);
  background: rgba(5, 12, 24, 0.6);
  color: var(--text);
  font-size: 14px;
  letter-spacing: 0.04em;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.field input::placeholder {
  color: rgba(107, 128, 156, 0.85);
}

.field input:focus {
  border-color: rgba(95, 227, 255, 0.6);
  background: rgba(7, 18, 34, 0.85);
  box-shadow: 0 0 0 3px rgba(95, 227, 255, 0.1);
}

.field.is-error input {
  border-color: rgba(255, 122, 138, 0.72);
  box-shadow: 0 0 0 3px rgba(255, 122, 138, 0.1);
}

.captcha-field .captcha-row {
  display: grid;
  grid-template-columns: 1fr 132px;
  gap: 10px;
}

.captcha-box {
  position: relative;
  height: 46px;
  padding: 0;
  border-radius: 11px;
  border: 1px solid rgba(120, 155, 195, 0.2);
  background: #0b1a2d;
  overflow: hidden;
  cursor: pointer;
}

.captcha-box svg {
  display: block;
  width: 100%;
  height: 100%;
}

.captcha-box::after {
  content: "点击换图";
  position: absolute;
  right: 6px;
  bottom: 3px;
  font-size: 14px;
  color: rgba(157, 176, 201, 0.55);
  letter-spacing: 0.08em;
}

.error-line {
  min-height: 18px;
  margin: -4px 0 12px;
  font-size: 14px;
  color: var(--rose);
  letter-spacing: 0.04em;
}

.submit-btn {
  width: 100%;
  height: 48px;
  border: 0;
  border-radius: 12px;
  background: linear-gradient(100deg, #27c7e8, #5fe3ff 48%, #8ba7ff);
  color: #041019;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.16em;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s, filter 0.2s;
  box-shadow: 0 12px 28px rgba(44, 190, 222, 0.26);
}

.submit-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 34px rgba(44, 190, 222, 0.34);
}

.submit-btn:active {
  transform: translateY(0);
}

.submit-btn[disabled] {
  filter: grayscale(0.28);
  cursor: default;
  opacity: 0.7;
}

.login-foot {
  margin-top: 20px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 14px;
  color: var(--text-3);
  letter-spacing: 0.05em;
}

.shake {
  animation: shake 0.36s;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  50% { transform: translateX(5px); }
  75% { transform: translateX(-3px); }
}

@media (max-width: 1080px) {
  .login-shell {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 48px 7vw;
  }

  .brand-panel {
    max-width: none;
  }

  .brand-panel h1 {
    font-size: 38px;
  }

  .brand-desc, .brand-foot {
    display: none;
  }

  .login-card {
    justify-self: start;
    max-width: 480px;
  }
}

@media (max-width: 560px) {
  .login-shell {
    padding: 34px 22px 40px;
  }

  .brand-panel h1 {
    font-size: 30px;
  }

  .brand-stats {
    gap: 8px;
    margin-top: 22px;
  }

  .stat-chip {
    flex: 1;
    min-width: 0;
    padding: 11px 12px;
  }

  .stat-chip b {
    font-size: 19px;
  }

  .login-card {
    padding: 28px 22px 22px;
    border-radius: 20px;
  }
}