:root {
  --bg: #edf4f7;
  --surface: #ffffff;
  --ink: #111827;
  --muted: #667085;
  --line: #d9e3ea;
  --brand: #146c86;
  --brand-dark: #0f4d64;
  --brand-soft: #e8f6f8;
  --green: #22ad68;
  --blue: #3774e8;
  --danger: #d92d20;
  --shadow: 0 24px 70px rgba(15, 36, 50, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(20, 108, 134, 0.12), rgba(55, 116, 232, 0.06)),
    var(--bg);
  color: var(--ink);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

button,
input {
  font: inherit;
}

.login-shell {
  display: grid;
  grid-template-columns: minmax(360px, 480px) minmax(360px, 560px);
  align-items: center;
  justify-content: center;
  gap: 32px;
  min-height: 100vh;
  padding: 42px 24px;
}

.login-panel,
.brief-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow);
}

.login-panel {
  padding: 34px;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
}

.brand-logo svg {
  width: 44px;
  height: 44px;
}

.logo-shield {
  fill: #edf8fa;
  stroke: var(--brand-dark);
  stroke-width: 2.8;
}

.logo-star {
  fill: var(--blue);
}

.logo-check {
  fill: none;
  stroke: var(--green);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 3.2;
}

.brand-row strong,
.brand-row span {
  display: block;
}

.brand-row strong {
  color: #164e63;
  font-size: 24px;
  font-weight: 900;
}

.brand-row span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.login-copy {
  margin: 46px 0 28px;
}

.login-copy h1 {
  margin: 0;
  font-size: 34px;
  line-height: 1.18;
}

.login-copy p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

.login-form {
  display: grid;
  gap: 16px;
}

.login-form label {
  display: grid;
  gap: 8px;
}

.login-form label span {
  color: #344054;
  font-size: 13px;
  font-weight: 900;
}

.login-form input {
  width: 100%;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 13px;
  background: #fff;
  color: var(--ink);
  outline: none;
}

.login-form input:focus {
  border-color: rgba(20, 108, 134, 0.55);
  box-shadow: 0 0 0 3px rgba(20, 108, 134, 0.12);
}

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border: 0;
  border-radius: var(--radius);
  background: var(--brand);
  color: #fff;
  font-weight: 900;
  cursor: pointer;
}

.primary-button:hover {
  background: var(--brand-dark);
}

.primary-button:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

.form-message {
  min-height: 20px;
  margin: 0;
  color: var(--danger);
  font-size: 13px;
  font-weight: 800;
}

.form-message.success {
  color: var(--green);
}

.local-hint {
  display: grid;
  gap: 6px;
  margin-top: 18px;
  padding: 13px;
  border: 1px solid rgba(20, 108, 134, 0.18);
  border-radius: var(--radius);
  background: var(--brand-soft);
  color: #344054;
  font-size: 12px;
  line-height: 1.65;
}

.local-hint[hidden] {
  display: none;
}

.local-hint strong {
  color: var(--brand-dark);
  font-size: 13px;
}

.local-hint code {
  color: var(--brand-dark);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-weight: 800;
}

.side-brief {
  display: grid;
  gap: 14px;
}

.brief-card {
  display: grid;
  gap: 8px;
  padding: 22px;
}

.brief-card span {
  color: var(--brand);
  font-size: 13px;
  font-weight: 900;
}

.brief-card strong {
  font-size: 21px;
}

.brief-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

@media (max-width: 860px) {
  .login-shell {
    grid-template-columns: minmax(0, 520px);
  }

  .side-brief {
    display: none;
  }
}

@media (max-width: 520px) {
  .login-shell {
    padding: 14px;
  }

  .login-panel {
    padding: 24px 18px;
  }

  .login-copy {
    margin: 34px 0 24px;
  }

  .login-copy h1 {
    font-size: 28px;
  }
}