:root {
  --detail-ink: #111827;
  --detail-muted: #64748b;
  --detail-line: #e2e8f0;
  --detail-brand: #172554;
  --detail-accent: #dc147f;
  --detail-surface: #f8fafc;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--detail-ink);
  background: #fff;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 300;
  padding: 10px 14px;
  color: #fff;
  background: var(--detail-brand);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

main {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 38px 0 76px;
}

.article-detail-head {
  width: 100%;
  padding: 16px 0 40px;
  border-bottom: 1px solid var(--detail-line);
}

.article-detail-topic {
  margin: 0 0 14px;
  color: var(--detail-accent);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.article-detail-head h1 {
  margin: 0;
  color: var(--detail-ink);
  font-size: clamp(34px, 4.6vw, 58px);
  line-height: 1.08;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.article-detail-head time {
  display: block;
  margin-top: 20px;
  color: var(--detail-muted);
  font-size: 14px;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 780px) minmax(240px, 300px);
  gap: clamp(44px, 7vw, 90px);
  align-items: start;
  justify-content: space-between;
  padding-top: 44px;
}

.article-body {
  min-width: 0;
  color: #253047;
  font-size: 17px;
  line-height: 1.76;
  overflow-wrap: anywhere;
}

.article-body > :first-child {
  margin-top: 0;
}

.article-body p {
  margin: 0 0 1.3em;
}

.article-body h1,
.article-body h2,
.article-body h3,
.article-body h4,
.article-body h5,
.article-body h6 {
  max-width: 760px;
  margin: 2em 0 0.7em;
  color: var(--detail-ink);
  line-height: 1.22;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.article-body h1,
.article-body h2 {
  font-size: 30px;
}

.article-body h3 {
  font-size: 24px;
}

.article-body h4,
.article-body h5,
.article-body h6 {
  font-size: 20px;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.5em;
  padding-left: 1.45em;
}

.article-body li {
  margin: 0.45em 0;
  padding-left: 0.2em;
}

.article-body a {
  color: #1745a3;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.article-body a:hover {
  color: #0f2e72;
}

.article-body strong,
.article-body b {
  color: var(--detail-ink);
}

.article-body blockquote {
  margin: 30px 0;
  padding: 6px 0 6px 24px;
  color: #334155;
  border-left: 4px solid var(--detail-accent);
}

.article-lead {
  color: var(--detail-ink);
  font-size: 20px;
  line-height: 1.6;
}

.article-toc {
  margin: 34px 0 42px;
  padding: 24px;
  border: 1px solid var(--detail-line);
  border-radius: 6px;
  background: var(--detail-surface);
}

.article-toc h2 {
  margin: 0 0 16px;
  font-size: 24px;
}

.article-toc ol {
  columns: 2;
  gap: 36px;
  margin: 0;
}

.article-toc li {
  break-inside: avoid;
  margin: 0 0 8px;
}

.article-body section {
  scroll-margin-top: 24px;
}

.article-note {
  margin: 30px 0;
  padding: 20px 22px;
  color: #253047;
  border: 1px solid #c7d2fe;
  border-left: 4px solid var(--detail-accent);
  border-radius: 4px;
  background: #f7f8ff;
}

.article-note > :last-child {
  margin-bottom: 0;
}

.article-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 38px;
}

.article-body .article-cta-row .button,
.article-body .article-cta-item .button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  color: #fff;
  border: 1px solid var(--detail-brand);
  border-radius: 5px;
  background: var(--detail-brand);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.25;
  text-align: center;
  text-decoration: none;
}

.article-body .article-cta-row .button-secondary {
  color: var(--detail-brand);
  background: #fff;
}

.article-table-wrap {
  max-width: 100%;
  margin: 28px 0;
  overflow-x: auto;
  border: 1px solid var(--detail-line);
  border-radius: 4px;
}

.article-table-wrap table {
  min-width: 620px;
  margin: 0;
  border: 0;
}

.article-conversion {
  margin: 46px 0;
  padding: 28px;
  border: 1px solid #c7d2fe;
  border-radius: 6px;
  background: #f7f8ff;
}

.article-conversion h2 {
  margin-top: 0;
}

.article-faq-item {
  margin: 0 0 12px;
  border: 1px solid var(--detail-line);
  border-radius: 5px;
  background: #fff;
}

.article-faq-item summary {
  padding: 16px 18px;
  color: var(--detail-ink);
  font-weight: 700;
  cursor: pointer;
}

.article-faq-item > div {
  padding: 0 18px 16px;
}

.article-faq-item > div > :last-child {
  margin-bottom: 0;
}

.article-body hr {
  margin: 38px 0;
  border: 0;
  border-top: 1px solid var(--detail-line);
}

.article-body img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  margin: 28px auto;
  border-radius: 4px;
}

.article-body figure {
  margin: 30px 0;
}

.article-body figcaption {
  margin-top: 10px;
  color: var(--detail-muted);
  font-size: 13px;
  line-height: 1.5;
  text-align: center;
}

.article-body table {
  display: block;
  width: 100%;
  margin: 28px 0;
  overflow-x: auto;
  border-spacing: 0;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.5;
}

.article-body th,
.article-body td {
  min-width: 130px;
  padding: 12px 14px;
  vertical-align: top;
  border: 1px solid #cbd5e1;
}

.article-body th {
  color: var(--detail-ink);
  background: var(--detail-surface);
  font-weight: 700;
  text-align: left;
}

.article-aside {
  position: sticky;
  top: 24px;
  padding: 26px 0 26px 24px;
  border-left: 3px solid var(--detail-accent);
}

.article-aside-label {
  margin: 0 0 8px;
  color: var(--detail-accent);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.article-aside h2 {
  margin: 0;
  color: var(--detail-brand);
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: 0;
}

.article-aside > p:not(.article-aside-label) {
  margin: 14px 0 20px;
  color: var(--detail-muted);
  font-size: 14px;
  line-height: 1.6;
}

.article-aside .button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 10px 18px;
  color: #fff;
  background: var(--detail-brand);
  border: 1px solid var(--detail-brand);
  border-radius: 5px;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  cursor: pointer;
}

.article-aside .button:hover {
  background: #233979;
  border-color: #233979;
}

.article-aside > a {
  display: inline-block;
  margin-top: 18px;
  color: var(--detail-brand);
  font-size: 14px;
  font-weight: 700;
}

.related-articles {
  margin-top: 78px;
  padding-top: 34px;
  border-top: 1px solid var(--detail-line);
}

.related-heading p {
  margin: 0 0 6px;
  color: var(--detail-accent);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.related-heading h2 {
  margin: 0;
  font-size: 30px;
  letter-spacing: 0;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
  margin-top: 24px;
}

.related-grid article {
  min-width: 0;
  padding-top: 18px;
  border-top: 3px solid var(--detail-brand);
}

.related-grid article > p {
  margin: 0 0 10px;
  color: var(--detail-muted);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
}

.related-grid h3 {
  margin: 0 0 14px;
  font-size: 18px;
  line-height: 1.35;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.related-grid h3 a {
  color: var(--detail-ink);
  text-decoration: none;
}

.related-grid h3 a:hover {
  color: #1745a3;
}

.related-grid time {
  color: var(--detail-muted);
  font-size: 12px;
}

@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .article-aside {
    position: static;
    max-width: 560px;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  main {
    width: min(100% - 28px, 1180px);
    padding-top: 24px;
  }

  .article-detail-head {
    padding: 8px 0 28px;
  }

  .article-detail-head h1 {
    font-size: 34px;
  }

  .article-layout {
    gap: 42px;
    padding-top: 30px;
  }

  .article-body {
    font-size: 16px;
    line-height: 1.7;
  }

  .article-lead {
    font-size: 18px;
  }

  .article-toc ol {
    columns: 1;
  }

  .article-cta-row {
    display: grid;
  }

  .article-body .article-cta-row .button,
  .article-body .article-cta-item .button {
    width: 100%;
  }

  .article-body h1,
  .article-body h2 {
    font-size: 25px;
  }

  .article-body h3 {
    font-size: 21px;
  }

  .article-body th,
  .article-body td {
    min-width: 118px;
    padding: 10px;
  }

  .article-aside {
    padding-left: 18px;
  }

  .related-articles {
    margin-top: 56px;
  }
}