:root {
  --maxw: 880px;
  --fg: #0f172a;
  --muted: #475569;
  --line: #e2e8f0;
  --brand: #0ea5e9;
  --accent: #059669;
  --warn: #b45309;
}

html,
body {
  margin: 0;
  padding: 0
}

body {
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
  color: var(--fg);
  line-height: 1.65;
  font-size: 16px;
  background: #fff
}

.wrap {
  max-width: var(--maxw);
  margin: 40px auto;
  padding: 0 16px
}

.breadcrumbs {
  font-size: 14px;
  color: var(--white);
  margin-bottom: 10px
}

.breadcrumbs a {
  color: rgba(var(--bs-link-color-rgb), var(--bs-link-opacity, 1)) !important;
  text-decoration: none;
}

header.article-header {
  margin-bottom: 16px
}

.eyebrow {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--white)
}

h1 {
  margin: 6px 0 8px;
  font-size: 34px;
  line-height: 1.22;
  color: #fff;
}

.sub {
  color: var(--white);
  margin: 0 0 16px
}

.meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--white);
  font-size: 14px;
  margin-bottom: 20px
}

.meta .dot::before {
  content: "•";
  margin: 0 8px;
  color: var(--white)
}

.cta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 18px 0 24px
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  color: var(--white)
}

.btn.primary {
  color: ##fff;
}

.btn:hover {
  transform: translateY(-1px)
}

.toc {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  margin: 8px 0 24px
}

.toc strong {
  display: block;
  margin-bottom: 8px;
  color: #fff;
}

.toc a {
  color: var(--white);
  text-decoration: none
}

.toc ol {
  margin: 0;
  padding-left: 20px;
  color: #fff;
}

h2 {
  margin: 28px 0 10px;
  font-size: 26px;
  line-height: 1.32;
  color: #fff;
}

h3 {
  margin: 18px 0 6px;
  font-size: 20px;
  line-height: 1.35
  color: #fff;
}

p {
  margin: 10px 0
  color: #fff;
}

ul,
ol {
  padding-left: 22px
  color: #fff;
}

.kpi {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 10px 0 22px
}

.card {
  border: 1px solid #4c4c4c;
  border-radius: 12px;
  padding: 14px;
  color: #fff;
}

.kpi .card b {
  font-size: 20px;
  display: block
}

.note,
.pro,
.warn,
.tip {
  border: 1px solid var(--line);
  border-left-width: 4px;
  padding: 12px 14px;
  border-radius: 10px;
  margin: 14px 0
}

.pro {
  border-left-color: var(--accent)
}

.warn {
  border-left-color: var(--warn)
}

.tip {
  border-left-color: var(--brand);
  color: #fff;
}
section {
  color: #fff;
}

.grid {
  display: grid;
  gap: 10px
}

.grid.cols-3 {
  grid-template-columns: repeat(3, 1fr)
}

.keyline {
  border-top: 1px solid var(--line);
  margin: 24px 0
}

.faq details {
  border-top: 1px solid var(--line);
  padding: 12px 0
}

.faq summary {
  cursor: pointer;
  font-weight: 600
}

footer.article-footer {
  border-top: 1px solid var(--line);
  padding-top: 18px;
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  color: #fff;
}

@media (max-width:640px) {
  h1 {
    font-size: 28px
  }

  .kpi,
  .grid.cols-3 {
    grid-template-columns: 1fr
  }

  .cta-bar {
    flex-direction: column;
    align-items: flex-start
  }
}