:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f6f7f9;
  color: #19202a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  overflow-x: hidden;
}

.learn-header {
  align-items: center;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(243, 247, 251, 0.98)),
    linear-gradient(90deg, rgba(6, 55, 109, 0.09), transparent 52%);
  border-bottom: 1px solid #d9dee7;
  display: grid;
  gap: 18px;
  grid-template-columns: auto minmax(420px, 1fr) minmax(220px, 320px) auto;
  min-height: 126px;
  padding: 18px clamp(18px, 4vw, 48px);
}

.back-link {
  background: #ffffff;
  border: 1px solid #cbd6e5;
  border-radius: 6px;
  color: #05294d;
  font-weight: 850;
  padding: 10px 12px;
  text-decoration: none;
  white-space: nowrap;
}

.brand-lockup {
  align-items: center;
  display: flex;
  gap: 20px;
  min-width: 0;
}

.product-logo {
  background: linear-gradient(135deg, #05294d, #476a7f 70%, #9eb9c7);
  border-radius: 16px;
  box-shadow: 0 18px 34px rgba(5, 41, 77, 0.2);
  color: #ffffff;
  flex: 0 0 auto;
  height: 76px;
  overflow: hidden;
  position: relative;
  width: 76px;
}

.product-logo::after {
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 13px;
  content: "";
  inset: 6px;
  position: absolute;
}

.product-logo span {
  font-size: 1.85rem;
  font-weight: 950;
  left: 11px;
  letter-spacing: 0;
  line-height: 1;
  position: absolute;
  top: 16px;
  z-index: 1;
}

.product-logo i {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.48) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.48) 1px, transparent 1px);
  background-size: 8px 8px;
  bottom: 13px;
  height: 20px;
  left: 14px;
  opacity: 0.72;
  position: absolute;
  width: 27px;
  z-index: 1;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  color: #05294d;
  font-size: clamp(2.15rem, 3.5vw, 3.4rem);
  letter-spacing: 0;
  line-height: 0.95;
  margin-bottom: 0;
  white-space: nowrap;
}

.brand-subtitle {
  color: #344258;
  font-size: clamp(1.02rem, 1.5vw, 1.2rem);
  font-weight: 800;
  letter-spacing: 0;
  margin: 4px 0 0;
  text-transform: uppercase;
}

.publisher-mark {
  color: #66758a;
  font-size: 0.78rem;
  font-weight: 800;
  margin-top: 6px;
  text-transform: uppercase;
  white-space: nowrap;
}

.header-visual {
  align-items: center;
  align-self: stretch;
  display: grid;
  gap: 10px;
  grid-template-columns: 76px minmax(96px, 1fr);
  min-height: 64px;
}

.visual-card,
.visual-chart {
  border: 1px solid #d3deeb;
  border-radius: 8px;
  box-shadow: 0 10px 22px rgba(24, 47, 79, 0.1);
  height: 64px;
}

.visual-card {
  background: #ffffff;
  display: grid;
  gap: 7px;
  padding: 12px;
}

.visual-card-primary {
  border-left: 5px solid #476a7f;
}

.visual-line {
  background: #c8d6e6;
  border-radius: 999px;
  display: block;
  height: 7px;
  width: 82%;
}

.visual-line.short {
  width: 56%;
}

.visual-total {
  align-self: end;
  color: #05294d;
  font-size: 1.15rem;
  font-weight: 900;
}

.visual-chart {
  align-items: end;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(237, 246, 248, 0.96));
  display: flex;
  gap: 6px;
  justify-content: center;
  padding: 10px 12px;
}

.visual-chart span {
  background: linear-gradient(180deg, #476a7f, #9eb9c7);
  border-radius: 5px 5px 2px 2px;
  display: block;
  width: 11px;
}

.language-control {
  display: grid;
  gap: 5px;
}

.language-control span {
  color: #526074;
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.language-control select {
  border: 1px solid #bdc8d9;
  border-radius: 6px;
  color: #111827;
  font: inherit;
  font-weight: 750;
  min-height: 38px;
  padding: 8px 10px;
}

.learn-shell {
  display: grid;
  grid-template-columns: 276px minmax(0, 1fr);
  min-height: calc(100vh - 126px);
}

.learn-nav {
  background: #202938;
  color: #ffffff;
  padding: 18px;
}

.nav-group {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}

.nav-group span {
  color: #b7c5d6;
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.nav-group button {
  background: transparent;
  border: 0;
  border-radius: 6px;
  color: #ffffff;
  cursor: pointer;
  font: inherit;
  font-size: 0.94rem;
  font-weight: 750;
  padding: 8px 10px;
  text-align: left;
}

.nav-group button:hover,
.nav-group button.active {
  background: #ffffff;
  color: #05294d;
}

.learn-content {
  padding: clamp(22px, 4vw, 48px);
}

.learn-content:focus {
  outline: none;
}

.article-shell {
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.38fr);
}

.article-card,
.insight-card,
.chart-card,
.topic-card {
  background: #ffffff;
  border: 1px solid #d9dee7;
  border-radius: 8px;
}

.article-card {
  padding: clamp(22px, 4vw, 42px);
}

.article-card .eyebrow {
  color: #4b627f;
  font-size: 0.82rem;
  font-weight: 850;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.article-card h2 {
  color: #05294d;
  font-size: clamp(2.15rem, 4vw, 4rem);
  line-height: 0.98;
  margin-bottom: 16px;
}

.article-card h3 {
  color: #10233b;
  font-size: 1.35rem;
  margin: 24px 0 8px;
}

.article-card p,
.article-card li {
  color: #33465f;
  font-size: 1.03rem;
  line-height: 1.65;
}

.article-card ul {
  display: grid;
  gap: 8px;
  padding-left: 1.2rem;
}

.article-points p {
  line-height: 1.62;
}

.timing-chart {
  background: #f7fafc;
  border: 1px solid #d9e2ee;
  border-radius: 8px;
  margin: 18px 0 22px;
  max-width: none;
  padding: 12px;
}

.timing-chart svg {
  display: block;
  height: auto;
  width: 100%;
}

.timing-chart figcaption {
  color: #64748b;
  font-size: 0.78rem;
  line-height: 1.35;
  margin-top: 8px;
}

.topic-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 18px;
}

.topic-card {
  color: inherit;
  display: grid;
  gap: 8px;
  padding: 18px;
  text-decoration: none;
}

.topic-card span {
  color: #4b627f;
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.topic-card strong {
  color: #05294d;
  font-size: 1.35rem;
}

.topic-card small {
  color: #5c6a7c;
  line-height: 1.45;
}

.side-rail {
  display: grid;
  gap: 16px;
  align-content: start;
}

.insight-card,
.chart-card {
  padding: 18px;
}

.insight-card strong,
.chart-card strong {
  color: #05294d;
  display: block;
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.insight-card p,
.chart-card p {
  color: #526074;
  line-height: 1.5;
  margin-bottom: 0;
}

.chart-card {
  grid-column: 1 / -1;
}

.fund-chart {
  margin-top: 16px;
  overflow-x: auto;
}

.fund-chart svg {
  display: block;
  min-width: 0;
  width: 100%;
}

.source-note {
  color: #64748b;
  font-size: 0.86rem;
  line-height: 1.45;
  margin-top: 10px;
}

.article-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.article-actions button {
  background: #05294d;
  border: 0;
  border-radius: 6px;
  color: #ffffff;
  cursor: pointer;
  font: inherit;
  font-weight: 850;
  padding: 10px 12px;
}

.article-actions button.secondary {
  background: #ffffff;
  border: 1px solid #bdc8d9;
  color: #05294d;
}

@media (max-width: 980px) {
  .learn-header,
  .learn-shell,
  .article-shell,
  .topic-grid {
    grid-template-columns: 1fr;
  }

  .learn-nav {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .learn-header {
    padding: 16px;
  }

  .brand-lockup {
    align-items: flex-start;
  }

  .product-logo {
    height: 58px;
    width: 58px;
  }

  .product-logo span {
    font-size: 1.35rem;
  }

  h1 {
    white-space: normal;
  }

  .header-visual {
    display: none;
  }

  .learn-nav {
    grid-template-columns: 1fr;
  }

  .timing-chart {
    float: none;
    margin: 0 0 14px;
    max-width: none;
  }
}