/* 技术文章与首页推荐；复用官网字体、颜色和按钮。 */
.nav-menu a[aria-current="page"] {
  color: var(--primary-blue-dark);
}

.article-hero {
  padding: 4rem 0;
  background: linear-gradient(135deg, #eff7ff, #f5f3ff);
}

.article-hero h1 {
  max-width: 950px;
  margin: 1rem 0 1.5rem;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.35;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.article-kicker {
  color: var(--primary-blue-dark);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}

.article-deck {
  max-width: 800px;
  font-size: 1.15rem;
  color: #526274;
  line-height: 1.9;
}

.article-meta {
  margin: 1.5rem 0;
  color: #526274;
  font-size: 0.875rem;
}

.article-breadcrumb {
  margin-bottom: 2rem;
  color: #526274;
  font-size: 0.875rem;
}

.article-breadcrumb a,
.article-body a:not(.btn),
.article-read-link {
  color: var(--primary-blue-dark);
  text-underline-offset: 4px;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.article-tags span {
  background: #edf5ff;
  color: #315575;
  border: 1px solid #dce8f5;
  padding: 0.25rem 0.75rem;
  border-radius: 30px;
  font-size: 0.8rem;
}

.technical-card {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  max-width: 1000px;
  margin: 0 auto;
  border: 1px solid #dde6ef;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 12px 36px rgba(24, 67, 100, 0.06);
  background: var(--bg-white);
}

.technical-card-visual {
  background: linear-gradient(140deg, #e8f5f1, #e9f2ff);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  padding: 2rem;
}

.technical-card-visual img {
  width: 128px;
  height: 128px;
  object-fit: contain;
}

.technical-card-visual span {
  color: #38695e;
  font-size: 0.875rem;
  font-weight: 600;
}

.technical-card-content {
  padding: 2rem;
}

.technical-card-content h3 {
  font-size: 1.5rem;
  line-height: 1.55;
  margin-bottom: 1rem;
}

.technical-card-content h3 a {
  color: var(--text-dark);
  text-decoration: none;
}

.technical-card-content h3 a:hover {
  color: var(--primary-blue-dark);
}

.technical-card-content > p:not(.article-kicker) {
  color: #526274;
  line-height: 1.9;
}

.article-read-link {
  display: inline-block;
  margin-top: 0.5rem;
  font-weight: 600;
}

.article-layout {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 3rem;
  padding-top: 3rem;
  padding-bottom: 4rem;
}

.article-sidebar {
  position: sticky;
  top: 110px;
  align-self: start;
}

.article-sidebar p {
  font-size: 0.8rem;
  color: #526274;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.article-sidebar a {
  display: block;
  padding: 0.45rem 0.75rem;
  color: #526274;
  border-left: 2px solid #e3eaf2;
  text-decoration: none;
  font-size: 0.875rem;
}

.article-sidebar a:hover {
  background: #edf5ff;
  color: var(--primary-blue-dark);
  border-color: var(--primary-blue);
}

.article-body {
  min-width: 0;
  line-height: 1.9;
}

.article-section {
  margin-bottom: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid #e3eaf2;
  scroll-margin-top: 110px;
}

.article-body h2 {
  font-size: 1.75rem;
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.article-body h3 {
  font-size: 1.15rem;
  margin: 1.5rem 0 0.75rem;
}

.article-body p {
  margin-bottom: 1rem;
}

.article-body ul,
.article-body ol {
  padding-left: 1.5rem;
  margin: 1rem 0;
}

.article-body li {
  margin-bottom: 0.6rem;
}

.engineering-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.engineering-grid > div {
  background: #f4f8fc;
  border: 1px solid #e3ebf4;
  border-radius: 12px;
  padding: 1.25rem;
}

.engineering-grid h3 {
  margin: 0 0 0.5rem;
  color: var(--primary-blue-dark);
}

.engineering-grid p {
  font-size: 0.9rem;
  margin: 0;
}

.article-note {
  border-left: 3px solid var(--primary-blue);
  background: #eff6ff;
  padding: 1rem 1.25rem;
  border-radius: 0 8px 8px 0;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}

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

.article-note.caution {
  background: #fff8e9;
  border-color: #ba8a2c;
  color: #6a511f;
}

.article-download {
  padding: 1.75rem;
  border: 1px solid #dce8f5;
  border-radius: 14px;
  background: #f4f8fc;
}

.article-product {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.article-product img {
  flex-shrink: 0;
}

.article-product p,
.article-product h2 {
  margin-bottom: 0.25rem;
}

.article-download-links,
.article-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
}

.article-body code,
.article-body pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85em;
  overflow-wrap: anywhere;
}

.article-body code {
  background: #edf3f9;
  padding: 2px 5px;
  border-radius: 4px;
}

.article-body pre {
  padding: 1rem 1.25rem;
  margin: 1rem 0;
  background: #1d344a;
  color: white;
  border-radius: 8px;
  white-space: pre-wrap;
}

.article-body pre code {
  padding: 0;
  background: none;
}

.article-body .article-hash {
  display: block;
  padding: 1rem;
  word-break: break-all;
  margin: 1rem 0;
}

.article-table-wrap {
  overflow-x: auto;
  margin: 1.5rem 0;
}

.article-body table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.article-body th,
.article-body td {
  padding: 0.85rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid #e3eaf2;
}

.article-body th {
  background: #f1f6fc;
}

.article-muted {
  color: #526274;
  font-size: 0.875rem;
}

.article-faq {
  border-bottom: 1px solid #e3eaf2;
  padding-bottom: 1rem;
}

.article-faq:last-child {
  border-bottom: 0;
}

.article-consultation {
  text-align: center;
  max-width: 800px;
}

.article-consultation h2 {
  margin-bottom: 1rem;
}

.article-consultation p {
  color: #526274;
  margin-bottom: 1.5rem;
  line-height: 1.9;
}

.article-consultation .article-read-link {
  display: block;
  margin-top: 1.5rem;
}

@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 2rem;
  }
  .article-sidebar {
    position: static;
  }
  .article-sidebar nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  .article-sidebar p {
    width: 100%;
  }
  .article-sidebar a {
    border: 1px solid #e3eaf2;
    border-radius: 6px;
  }
}

@media (max-width: 768px) {
  .technical-card,
  .engineering-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .technical-card-visual {
    padding: 1.5rem;
  }
  .technical-card-content {
    padding: 1.5rem;
  }
  .article-hero {
    padding: 2.5rem 0;
  }
  .article-hero h1 {
    font-size: 2rem;
  }
  .article-layout {
    padding-top: 2rem;
  }
  .article-body h2 {
    font-size: 1.5rem;
  }
  .article-download {
    padding: 1.25rem;
  }
  .article-product {
    align-items: flex-start;
  }
  .article-product img {
    width: 60px;
    height: 60px;
  }
}

@media print {
  .header, .footer, .article-sidebar, .article-consultation {
    display: none;
  }
  .article-layout {
    display: block;
  }
  .article-hero {
    padding: 1rem 0;
  }
  .article-body h2, .article-body h3 {
    break-after: avoid;
  }
}