/**
 * Knowledge / news article reading experience (CN + EN)
 * Use: body.premium-article.article-page
 */

.premium-article.article-page {
  --article-ink: #1a2332;
  --article-body: #3d4550;
  --article-muted: #667085;
  --article-line: #e8ecf1;
  --article-surface: #f6f9fc;
  --article-accent: #0076c0;
  --article-accent-dark: #005a94;
  --article-radius: 14px;
  color: var(--article-body);
}

.premium-article.article-page #main {
  background: #fff;
  padding-bottom: 0;
}

.premium-article.article-page .article-page-wrap {
  padding-bottom: 3rem;
}

/* Hero */
.premium-article .article-hero {
  background: linear-gradient(165deg, #f8fbfe 0%, #eef4f9 48%, #fff 100%);
  border-bottom: 1px solid var(--article-line);
  padding: 0.75rem 0 2.75rem;
  height: auto;
  min-height: 0;
  overflow: visible;
  position: static;
  z-index: auto;
}

.premium-article .article-hero .container {
  max-width: 920px;
}

.premium-article .article-hero .article-breadcrumb {
  padding-top: 0.5rem;
  padding-bottom: 1.25rem;
  margin-bottom: 0;
}

.premium-article .article-breadcrumb__list {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.35rem 0.5rem;
  overflow: hidden;
}

.premium-article .article-breadcrumb__item {
  flex: 0 0 auto;
  max-width: 100%;
}

.premium-article .article-breadcrumb__item--current {
  flex: 0 0 auto;
  color: var(--article-muted);
  white-space: nowrap;
}

.premium-article .article-hero__category {
  display: inline-block;
  margin: 0;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  background: rgba(0, 118, 192, 0.1);
  color: var(--article-accent-dark);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.4;
}

.premium-article .article-hero__title {
  margin: 0 0 1rem;
  max-width: none;
  color: var(--article-ink);
  font-size: clamp(1.65rem, 3.2vw, 2.1rem);
  font-weight: 700;
  line-height: 1.38;
  letter-spacing: -0.01em;
}

.premium-article.lang-en .article-hero__title,
.premium-article.premium-en .article-hero__title {
  max-width: none;
}

.premium-article .article-hero__deck {
  margin: 0 0 1.25rem;
  max-width: none;
  color: var(--article-muted);
  font-size: clamp(1rem, 1.8vw, 1.08rem);
  line-height: 1.7;
  padding-bottom: 0.15rem;
}

.premium-article .article-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem 0.85rem;
  margin: 0 0 0.25rem;
  padding-top: 1rem;
  padding-bottom: 0.25rem;
  border-top: 1px solid rgba(0, 118, 192, 0.12);
  color: var(--article-muted);
  font-size: 0.8125rem;
}

.premium-article .article-hero__meta time {
  color: inherit;
}

/* Main column */
.premium-article .article-main {
  padding-top: 2.5rem;
  padding-bottom: 1rem;
  background: #fff;
}

.premium-article .article-figure {
  margin: 0 0 2rem;
  border-radius: var(--article-radius);
  overflow: hidden;
  box-shadow: 0 18px 40px rgba(15, 35, 58, 0.08);
}

.premium-article .article-figure img {
  display: block;
  width: 100%;
  max-height: 420px;
  object-fit: cover;
}

.premium-article .article-figure img[src*="nopic"] {
  display: none;
}

.premium-article .article-figure:has(img[src*="nopic"]) {
  display: none;
}

.premium-article .article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
}

@media (min-width: 1200px) {
  .premium-article .article-layout--with-aside {
    grid-template-columns: minmax(0, 1fr) 200px;
    align-items: start;
  }
}

/* Prose */
.premium-article .article-prose {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--article-body);
}

.premium-article .article-prose > p:first-child,
.premium-article .article-prose .article-lead {
  margin-top: 0;
  margin-bottom: 1.5rem;
  padding: 1.15rem 1.25rem;
  border-radius: 12px;
  background: var(--article-surface);
  border-left: 3px solid var(--article-accent);
  color: var(--article-ink);
  font-size: 1.05rem;
  line-height: 1.78;
}

.premium-article .article-prose h2 {
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.55rem;
  border-bottom: 2px solid rgba(0, 118, 192, 0.14);
  color: var(--article-ink) !important;
  font-size: clamp(1.25rem, 2.4vw, 1.5rem);
  font-weight: 700;
  line-height: 1.35;
  scroll-margin-top: 6rem;
}

.premium-article .article-prose h3 {
  margin: 1.75rem 0 0.75rem;
  color: var(--article-ink) !important;
  font-size: 1.125rem;
  font-weight: 700;
}

.premium-article .article-prose p {
  margin-bottom: 1.1rem;
}

.premium-article .article-prose ul,
.premium-article .article-prose ol {
  margin: 0 0 1.25rem;
  padding-left: 0;
  list-style: none;
}

.premium-article .article-prose li {
  position: relative;
  margin-bottom: 0.65rem;
  padding-left: 1.35rem;
}

.premium-article .article-prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: var(--article-accent);
  transform: translateY(-50%);
}

.premium-article .article-prose ol {
  counter-reset: article-ol;
}

.premium-article .article-prose ol li {
  counter-increment: article-ol;
}

.premium-article .article-prose ol li::before {
  content: counter(article-ol);
  position: absolute;
  left: 0;
  top: 0.15em;
  width: 1.2rem;
  color: var(--article-accent-dark);
  font-size: 0.875rem;
  font-weight: 700;
}

.premium-article .article-prose a {
  color: var(--article-accent-dark);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.premium-article .article-prose a:hover {
  color: var(--article-accent);
}

.premium-article .article-prose strong {
  color: var(--article-ink);
  font-weight: 600;
}

.premium-article .article-prose table {
  width: 100%;
  margin: 1.5rem 0;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.premium-article .article-prose th,
.premium-article .article-prose td {
  border: 1px solid var(--article-line);
  padding: 0.75rem 1rem;
  vertical-align: top;
}

.premium-article .article-prose th {
  background: var(--article-surface);
  color: var(--article-accent-dark);
  font-weight: 600;
}

/* Callout / CTA blocks inside CMS HTML */
.premium-article .article-callout {
  margin: 2rem 0;
  padding: 1.35rem 1.5rem;
  border-radius: var(--article-radius);
  background: linear-gradient(135deg, #f4f9fd 0%, #eef5fa 100%);
  border: 1px solid rgba(0, 118, 192, 0.14);
  border-left: 4px solid var(--article-accent);
}

.premium-article .article-callout p {
  margin: 0;
}

.premium-article .article-callout p + p {
  margin-top: 0.65rem;
}

.premium-article .article-callout strong {
  color: var(--article-ink);
}

/* Product quick links row */
.premium-article .article-product-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 1rem 0 1.5rem;
}

.premium-article .article-product-links a {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  background: #fff;
  border: 1px solid rgba(0, 118, 192, 0.22);
  color: var(--article-accent-dark) !important;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none !important;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.premium-article .article-product-links a:hover {
  background: rgba(0, 118, 192, 0.06);
  border-color: var(--article-accent);
}

/* TOC sidebar */
.premium-article .article-toc {
  position: sticky;
  top: 6.5rem;
  padding: 1rem 1.1rem;
  border-radius: 12px;
  background: var(--article-surface);
  border: 1px solid var(--article-line);
}

.premium-article .article-toc__title {
  margin: 0 0 0.65rem;
  color: var(--article-ink);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.premium-article.lang-cn .article-toc__title,
.premium-article:not(.premium-en) .article-toc__title {
  text-transform: none;
  letter-spacing: 0.02em;
}

.premium-article .article-toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.premium-article .article-toc__list a {
  display: block;
  padding: 0.35rem 0;
  color: var(--article-muted);
  font-size: 0.8125rem;
  line-height: 1.45;
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 0.55rem;
}

.premium-article .article-toc__list a:hover,
.premium-article .article-toc__list a.is-active {
  color: var(--article-accent-dark);
  border-left-color: var(--article-accent);
}

/* Share */
.premium-article .article-share {
  padding: 1rem 0;
}

.premium-article .article-share__title {
  display: block;
  margin-bottom: 0.75rem;
  color: var(--article-muted);
  font-size: 0.8125rem;
  font-weight: 600;
}

.premium-article .article-share__links {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.premium-article .article-share__links a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--article-body);
  font-size: 0.8125rem;
  text-decoration: none;
}

.premium-article .article-share__links a:hover {
  color: var(--article-accent);
}

.premium-article .article-share__links .icon {
  width: 18px;
  height: 18px;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

.premium-article .article-share--mobile {
  margin: 1.5rem 0 0;
  padding: 1.1rem 1.25rem;
  border-radius: 12px;
  background: var(--article-surface);
}

.premium-article .article-share--mobile .article-share__links {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
}

/* Bottom CTA */
.premium-article .article-bottom-cta {
  margin-top: 2.5rem;
  padding: 1.5rem 1.65rem;
  border-radius: var(--article-radius);
  background: linear-gradient(135deg, #0076c0 0%, #005a94 100%);
  color: #fff;
}

.premium-article .article-bottom-cta p {
  margin: 0;
  line-height: 1.65;
}

.premium-article .article-bottom-cta strong {
  color: #fff;
}

.premium-article .article-bottom-cta a {
  color: #fff;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

/* Related + pagination */
.premium-article .related-articles {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--article-line);
}

.premium-article .article-pagination {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--article-line);
}

.premium-article .article-pagination a {
  color: var(--article-accent-dark);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
}

.premium-article .article-pagination a:hover {
  text-decoration: underline;
}

/* Undo legacy news-detail quirks */
.premium-article .news-detail .content {
  border-bottom: 0;
  margin-bottom: 0;
}

.premium-article .news-detail .news-item {
  display: none;
}

.premium-article .news-detail .row.img {
  display: none;
}

@media (max-width: 991px) {
  .premium-article .article-hero {
    padding-bottom: 1.75rem;
  }

  .premium-article .article-hero__title {
    max-width: none;
  }
}