:root {
  --lr-blue-950: #10213f;
  --lr-blue-900: #15315f;
  --lr-blue-800: #1d4380;
  --lr-blue-700: #2456a4;
  --lr-blue-600: #2f6feb;
  --lr-blue-500: #4385f5;
  --lr-blue-100: #eaf2ff;
  --lr-blue-50: #f4f8ff;
  --lr-ink: #172033;
  --lr-muted: #6b7280;
  --lr-line: #e4e9f2;
  --lr-surface: #ffffff;
  --lr-canvas: #f5f7fb;
}

body.learning-lab-active {
  color: var(--lr-ink);
  background:
    radial-gradient(circle at 78% -15%, rgba(47, 111, 235, 0.10), transparent 30rem),
    var(--lr-canvas);
}

/* Unify the existing product shell with the same blue design language. */
body.learning-lab-active > aside {
  background: linear-gradient(180deg, #11233f 0%, #0e1b31 100%) !important;
}

body.learning-lab-active .bg-brand-600 {
  background-color: var(--lr-blue-600) !important;
}

body.learning-lab-active .hover\:bg-brand-700:hover {
  background-color: #245dcc !important;
}

body.learning-lab-active .text-brand-600,
body.learning-lab-active .text-brand-700,
body.learning-lab-active .text-brand-800 {
  color: var(--lr-blue-600) !important;
}

body.learning-lab-active .bg-brand-50,
body.learning-lab-active .bg-brand-100 {
  background-color: var(--lr-blue-50) !important;
}

body.learning-lab-active .border-brand-100,
body.learning-lab-active .border-brand-200,
body.learning-lab-active .border-brand-300 {
  border-color: #dbe8ff !important;
}

body.learning-lab-active .focus\:border-brand-500:focus {
  border-color: var(--lr-blue-500) !important;
}

body.learning-lab-active .focus\:ring-brand-200:focus {
  --tw-ring-color: rgba(47, 111, 235, 0.18) !important;
}

body.learning-lab-active main {
  background: transparent;
}

body.learning-lab-active header {
  border-color: var(--lr-line) !important;
}

body.learning-lab-active main > div > section,
body.learning-lab-active main > div > article,
body.learning-lab-active main > div > div.bg-white {
  border-color: var(--lr-line) !important;
}

body.learning-lab-active input:not([type="checkbox"]):not([type="radio"]),
body.learning-lab-active textarea,
body.learning-lab-active select {
  border-color: var(--lr-line) !important;
}

body.learning-lab-active input:not([type="checkbox"]):not([type="radio"]):focus,
body.learning-lab-active textarea:focus,
body.learning-lab-active select:focus {
  border-color: var(--lr-blue-500) !important;
  box-shadow: 0 0 0 3px rgba(47, 111, 235, 0.10);
  outline: none;
}

body.learning-lab-active nav[aria-label="移动端导航"] {
  border-color: var(--lr-line) !important;
  box-shadow: 0 -8px 24px rgba(16, 33, 63, 0.05);
}

body.learning-lab-active [role="tablist"] .bg-gray-900 {
  background-color: var(--lr-blue-950) !important;
}

.learning-page-wrap {
  margin-bottom: 24px;
}

.learning-command-center {
  position: relative;
  overflow: hidden;
  border: 1px solid #dfe6f2;
  border-radius: 14px;
  background: var(--lr-surface);
  box-shadow: 0 10px 28px rgba(27, 55, 101, 0.07);
}

.learning-command-center::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--lr-blue-600);
}

.learning-command-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
}

.learning-command-primary {
  padding: 24px 26px 23px;
}

.learning-command-side {
  border-left: 1px solid #dfe8f7;
  padding: 23px 24px;
  color: var(--lr-ink);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.68), transparent 65%),
    var(--lr-blue-50);
}

.learning-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  color: var(--lr-blue-700);
  font-size: 12px;
  font-weight: 700;
}

.learning-eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lr-blue-600);
  box-shadow: 0 0 0 4px rgba(47, 111, 235, 0.11);
}

.learning-lab-badge {
  display: inline-flex;
  align-items: center;
  min-height: 25px;
  margin-left: 3px;
  border: 1px solid #d4e3ff;
  border-radius: 999px;
  padding: 0 9px;
  color: #3561a7;
  background: #f4f8ff;
  font-size: 11px;
  font-weight: 650;
}

.learning-command-primary h2 {
  margin: 11px 0 7px;
  color: var(--lr-ink);
  font-size: clamp(21px, 2.5vw, 27px);
  line-height: 1.3;
  letter-spacing: -0.015em;
}

.learning-command-primary > p {
  max-width: 760px;
  margin: 0;
  color: var(--lr-muted);
  font-size: 13px;
  line-height: 1.65;
}

.learning-metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 19px;
}

.learning-metric {
  min-height: 98px;
  border: 1px solid var(--lr-line);
  border-radius: 11px;
  padding: 13px 14px;
  background: #fafbfd;
}

.learning-metric span,
.learning-metric small {
  display: block;
}

.learning-metric span {
  color: #667085;
  font-size: 11px;
  font-weight: 650;
}

.learning-metric strong {
  display: block;
  margin: 7px 0 4px;
  color: var(--lr-ink);
  font-size: 23px;
  line-height: 1;
}

.learning-metric small {
  color: #8b95a7;
  font-size: 10px;
  line-height: 1.4;
}

.learning-metric.is-attention {
  border-color: #cddfff;
  background: #f5f9ff;
}

.learning-metric.is-attention strong {
  color: #255fcb;
}

.learning-metric.is-positive {
  border-color: #cde9df;
  background: #f5fbf8;
}

.learning-metric.is-positive strong {
  color: #138564;
}

.learning-side-label {
  margin: 0;
  color: #6b83a9;
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.learning-command-side h3 {
  margin: 7px 0 15px;
  color: var(--lr-blue-950);
  font-size: 16px;
}

.learning-flow {
  display: grid;
  gap: 10px;
}

.learning-flow-step {
  position: relative;
  display: grid;
  grid-template-columns: 25px minmax(0, 1fr);
  gap: 9px;
  align-items: start;
}

.learning-flow-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 24px;
  bottom: -10px;
  left: 12px;
  width: 1px;
  background: #cbdaf2;
}

.learning-flow-index {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border: 1px solid #c8d7ee;
  border-radius: 50%;
  color: #7485a1;
  background: #fff;
  font-size: 10px;
  font-weight: 800;
}

.learning-flow-step.is-current .learning-flow-index {
  border-color: var(--lr-blue-600);
  color: #fff;
  background: var(--lr-blue-600);
  box-shadow: 0 0 0 4px rgba(47, 111, 235, 0.10);
}

.learning-flow-step strong,
.learning-flow-step small {
  display: block;
}

.learning-flow-step strong {
  color: #25334a;
  font-size: 12px;
}

.learning-flow-step small {
  margin-top: 2px;
  color: #7c8aa1;
  font-size: 10px;
  line-height: 1.4;
}

.learning-next-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
  border-top: 1px solid #d9e4f5;
  padding-top: 14px;
}

.learning-next-action span {
  color: #718099;
  font-size: 10px;
}

.learning-next-action a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  border-radius: 8px;
  padding: 0 12px;
  color: #fff;
  background: var(--lr-blue-600);
  font-size: 11px;
  font-weight: 750;
}

.learning-next-action a:hover {
  background: #245dcc;
}

.learning-decision-legend {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 9px;
  margin-top: 14px;
}

.learning-decision {
  border: 1px solid var(--lr-line);
  border-radius: 10px;
  padding: 11px 12px;
  background: #fbfcfe;
}

.learning-decision b,
.learning-decision span {
  display: block;
}

.learning-decision b {
  color: #26354d;
  font-size: 11px;
}

.learning-decision span {
  margin-top: 3px;
  color: #7b8799;
  font-size: 10px;
  line-height: 1.4;
}

.learning-trust-note {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  margin-top: 12px;
  border: 1px solid #dce7f8;
  border-radius: 9px;
  padding: 10px 12px;
  color: #576984;
  background: #f7faff;
  font-size: 10px;
  line-height: 1.5;
}

.learning-trust-note::before {
  content: "i";
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  color: #fff;
  background: var(--lr-blue-600);
  font: 800 10px/1 sans-serif;
}

.learning-page-guide {
  position: relative;
  overflow: hidden;
  border: 1px solid #dfe6f2;
  border-radius: 14px;
  background:
    linear-gradient(135deg, rgba(244, 248, 255, 0.92), rgba(255, 255, 255, 0.96) 46%),
    var(--lr-surface);
  box-shadow: 0 9px 26px rgba(27, 55, 101, 0.06);
}

.learning-page-guide::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--lr-blue-600);
}

.learning-guide-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr) auto;
  gap: 24px;
  align-items: center;
  padding: 20px 22px 20px 25px;
}

.learning-guide-copy {
  min-width: 0;
}

.learning-guide-copy h2 {
  margin: 8px 0 5px;
  color: var(--lr-ink);
  font-size: 18px;
  line-height: 1.35;
}

.learning-guide-copy > p:last-child {
  margin: 0;
  color: var(--lr-muted);
  font-size: 12px;
  line-height: 1.6;
}

.learning-guide-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
}

.learning-guide-step {
  min-height: 74px;
  border: 1px solid var(--lr-line);
  border-radius: 10px;
  padding: 10px 11px;
  background: rgba(255, 255, 255, 0.80);
}

.learning-guide-step b,
.learning-guide-step span {
  display: block;
}

.learning-guide-step b {
  color: #2c3b52;
  font-size: 11px;
}

.learning-guide-step span {
  margin-top: 4px;
  color: #7b8799;
  font-size: 10px;
  line-height: 1.45;
}

.learning-guide-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border-radius: 9px;
  padding: 0 15px;
  white-space: nowrap;
  color: #fff;
  background: var(--lr-blue-600);
  font-size: 11px;
  font-weight: 750;
  box-shadow: 0 6px 15px rgba(47, 111, 235, 0.18);
}

.learning-guide-action:hover {
  background: #245dcc;
}

body.learning-login-active {
  background:
    radial-gradient(circle at 72% 5%, rgba(67, 133, 245, 0.22), transparent 30rem),
    linear-gradient(145deg, #f7faff 0%, #edf4ff 48%, #f8fafc 100%) !important;
}

body.learning-login-active main,
body.learning-login-active form {
  border-color: var(--lr-line) !important;
}

@media (max-width: 820px) {
  .learning-command-grid {
    grid-template-columns: 1fr;
  }

  .learning-command-side {
    border-top: 1px solid #dfe8f7;
    border-left: 0;
  }

  .learning-guide-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .learning-guide-action {
    justify-self: start;
  }
}

@media (max-width: 640px) {
  .learning-command-primary,
  .learning-command-side {
    padding: 20px;
  }

  .learning-metric-grid,
  .learning-decision-legend {
    grid-template-columns: 1fr 1fr;
  }

  .learning-guide-grid {
    padding: 19px 18px 19px 21px;
  }

  .learning-guide-steps {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 430px) {
  .learning-metric-grid,
  .learning-decision-legend {
    grid-template-columns: 1fr;
  }
}