.article-page {
  padding-bottom: 64px;
  background: #f4f7fb;
}

.article-banner.shell {
  max-width: 1180px;
  padding-top: 28px;
}

.article-banner .breadcrumb {
  margin-bottom: 18px;
  color: #8593a6;
  font-size: 12px;
}

.article-banner .breadcrumb a:hover {
  color: #1557e8;
}

.article-cover {
  width: 100%;
  height: 205px;
  padding: 30px 40px;
  border-radius: 10px;
  box-shadow: 0 10px 28px rgba(20, 67, 145, .12);
}

.article-cover h2 {
  margin: 10px 0 4px;
  font-size: 24px;
  line-height: 1.42;
}

.article-cover p {
  margin: 0;
}

.article-layout.shell {
  max-width: 1180px;
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr) 250px;
  grid-template-areas: "toc content side";
  gap: 24px;
  align-items: start;
  padding-top: 24px;
  padding-bottom: 0;
}

.article-content-card {
  grid-area: content;
  min-width: 0;
  padding: 40px 46px 46px;
  border: 1px solid #e7ebf1;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(24, 51, 88, .055);
}

.article-top {
  max-width: none;
  padding: 0 0 27px;
  border-bottom: 1px solid #e8edf3;
  text-align: left;
}

.article-top > .tag {
  display: inline-flex;
  margin: 0 0 12px;
  padding: 5px 10px;
  border-radius: 4px;
  background: #edf4ff;
  color: #155ad8;
  font-size: 11px;
  font-weight: 700;
}

.article-top h1 {
  max-width: none;
  margin: 0;
  color: #101f36;
  font-size: clamp(32px, 2.65vw, 42px);
  line-height: 1.32;
  letter-spacing: -.035em;
  text-align: left;
  text-wrap: balance;
}

.article-meta {
  justify-content: flex-start;
  gap: 0;
  margin-top: 17px;
  color: #8996a8;
  font-size: 11px;
}

.article-meta span {
  display: inline-flex;
  align-items: center;
}

.article-meta span + span::before {
  width: 3px;
  height: 3px;
  margin: 0 9px;
  border-radius: 50%;
  background: #bac5d3;
  content: "";
}

.article-prose {
  min-width: 0;
  padding: 28px 0 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  color: #354861;
  font-size: 16px;
  line-height: 1.95;
}

.article-guide {
  margin: 0 0 30px;
  padding: 18px 20px;
  border-left: 3px solid #2b6fe8;
  border-radius: 3px 7px 7px 3px;
  background: #f5f8fc;
}

.article-guide span {
  display: block;
  margin-bottom: 5px;
  color: #1e62d5;
  font-size: 11px;
  font-weight: 700;
}

.article-guide p {
  margin: 0;
  color: #425b78;
  font-size: 16px;
  line-height: 1.8;
}

.article-prose > p:first-of-type,
.article-prose .article-lead {
  color: #354861;
  font-size: 16px;
  line-height: 1.95;
}

.article-prose p {
  margin: 0 0 20px;
}

.article-prose h2 {
  margin: 38px 0 13px;
  padding: 0 0 0 13px;
  border-left: 4px solid #2165df;
  color: #102a4d;
  font-size: 25px;
  line-height: 1.45;
  letter-spacing: -.02em;
}

.article-prose h2:first-of-type {
  margin-top: 30px;
}

.article-prose h3 {
  margin: 28px 0 11px;
  color: #18385f;
  font-size: 20px;
}

.article-prose blockquote {
  margin: 25px 0;
  padding: 20px 22px 20px 53px;
  border: 1px solid #dbe5f2;
  border-radius: 7px;
  background: #f7f9fc;
  color: #3e5d7e;
  font-size: 15px;
  line-height: 1.85;
}

.article-prose blockquote::before {
  left: 18px;
  top: 8px;
}

.article-table {
  margin: 24px 0;
  font-size: 12px;
}

.article-table > div > * {
  padding: 11px 12px;
}

.article-insight {
  margin: 24px 0;
  padding: 20px;
}

.article-insight > b {
  font-size: 14px;
}

.article-insight li {
  padding: 4px 0;
  font-size: 13px;
}

.article-steps {
  gap: 8px;
  margin: 24px 0;
}

.article-steps > div {
  padding: 13px 7px;
}

.article-steps span {
  font-size: 10px;
}

.article-toc {
  grid-area: toc;
  position: sticky;
  top: 88px;
  max-height: calc(100vh - 112px);
  overflow-y: auto;
  padding: 18px 14px;
  border: 1px solid #e4e9f0;
  border-radius: 9px;
  background: #fff;
  box-shadow: 0 6px 18px rgba(24, 51, 88, .045);
}

.article-toc h3,
.side-card h3 {
  margin: 0 0 12px;
  color: #172b48;
  font-size: 14px;
}

.article-toc nav a {
  display: block;
  padding: 8px 9px;
  border-left: 2px solid transparent;
  color: #65758a;
  font-size: 11px;
  line-height: 1.55;
}

.article-toc nav a:hover,
.article-toc nav a.active {
  border-color: #1e65e5;
  background: #f2f6fd;
  color: #1559d2;
}

.article-side {
  grid-area: side;
  position: static;
  grid-column: auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.side-card {
  padding: 18px;
  border: 1px solid #e4e9f0;
  border-radius: 9px;
  background: #fff;
  box-shadow: 0 6px 18px rgba(24, 51, 88, .045);
}

.author-side {
  order: 0;
}

.author-side > div b {
  font-size: 13px;
}

.author-side > div small,
.related-side > a small,
.material-side small {
  font-size: 9px;
}

.author-side p,
.author-side > a,
.material-side > a:last-child {
  font-size: 11px;
  line-height: 1.7;
}

.related-side > a {
  gap: 9px;
  padding: 11px 0;
}

.related-side > a > span {
  font-size: 11px;
}

.related-side > a b {
  font-size: 11px;
  line-height: 1.5;
}

.material-side span {
  font-size: 11px;
}

.article-conclusion {
  margin-top: 36px;
  padding: 20px 22px;
}

.article-conclusion span {
  font-size: 10px;
}

.article-conclusion p {
  margin: 4px 0 0;
  font-size: 14px;
}

.article-cta {
  margin: 26px 0 0;
  padding: 20px 22px;
}

.article-cta b {
  font-size: 15px;
}

.article-cta span,
.article-cta a {
  font-size: 11px;
}

@media (max-width: 1180px) {
  .article-layout.shell {
    grid-template-columns: 180px minmax(0, 1fr);
    grid-template-areas:
      "toc content"
      ". side";
  }

  .article-side {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 800px) {
  .article-page {
    padding-bottom: 42px;
  }

  .article-banner.shell {
    padding-top: 82px;
  }

  .article-cover {
    height: 165px;
    padding: 23px 20px;
  }

  .article-cover h2 {
    font-size: 20px;
  }

  .cover-visual {
    display: none;
  }

  .article-layout.shell {
    grid-template-columns: 1fr;
    grid-template-areas:
      "toc"
      "content"
      "side";
    gap: 14px;
    padding-top: 16px;
  }

  .article-toc {
    position: static;
    max-height: none;
  }

  .article-toc nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .article-content-card {
    padding: 27px 21px 32px;
  }

  .article-top {
    padding: 0 0 22px;
  }

  .article-top h1 {
    font-size: 30px;
    line-height: 1.34;
  }

  .article-meta {
    gap: 7px 12px;
  }

  .article-meta span + span::before {
    display: none;
  }

  .article-prose {
    padding-top: 22px;
    font-size: 15px;
  }

  .article-guide {
    margin-bottom: 24px;
    padding: 16px;
  }

  .article-guide p {
    font-size: 15px;
  }

  .article-prose h2 {
    margin-top: 32px;
    font-size: 22px;
  }

  .article-prose h3 {
    font-size: 18px;
  }

  .article-prose blockquote {
    padding: 18px 16px 18px 43px;
  }

  .article-side {
    grid-template-columns: 1fr;
  }

  .article-cta {
    display: block;
  }

  .article-cta a {
    display: inline-block;
    margin-top: 12px;
  }
}

@media (max-width: 520px) {
  .article-toc nav {
    grid-template-columns: 1fr;
  }

  .article-top h1 {
    font-size: 27px;
  }
}