/* Article page styles */
.article-page {
  background: linear-gradient(
    to bottom,
    var(--color-background-secondary),
    var(--color-background)
  );
  min-height: 100vh;
}
.article-main {
  padding: 0 1rem 5rem;
}
.article-container {
  max-width: 860px;
  margin: 0 auto;
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
  margin-top: 28px;
  flex-wrap: wrap;
}
.article-breadcrumb__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}
.article-breadcrumb__link:hover {
  color: var(--color-primary);
}
.article-breadcrumb__sep {
  opacity: 0.4;
}
.article-breadcrumb__cur {
  color: var(--color-text);
}

.article-header {
  margin-bottom: 1.75rem;
}
.article-title {
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin: 0.75rem 0 0.85rem;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  flex-wrap: wrap;
}
.article-meta__dot {
  opacity: 0.4;
}

.article-hero-img {
  margin-bottom: 2.5rem;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}
.article-cover {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
  max-height: 400px;
}

.article-body {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text);
}
.article-intro {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.article-h2 {
  font-size: 1.45rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  color: var(--color-text);
}
.article-content {
  color: var(--color-text-secondary);
  line-height: 1.8;
}
.article-content p {
  margin-bottom: 1rem;
}
.article-content ul,
.article-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}
.article-content li {
  margin-bottom: 0.4rem;
}
.article-content strong {
  color: var(--color-text);
  font-weight: 600;
}

.article-related {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}
.article-related__sub {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}
details.faq-row {
  display: block;
  background: var(--color-background-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  transition: border-color 0.2s;
  margin: 0;
  padding: 0;
}
details.faq-row:hover {
  border-color: rgba(59, 130, 246, 0.3);
}
details.faq-row > summary.faq-row__btn {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.4rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
  background: none;
  border: none;
}
details.faq-row > summary.faq-row__btn::-webkit-details-marker {
  display: none;
}
details.faq-row > summary.faq-row__btn::marker {
  display: none;
}
details.faq-row > .faq-row__body {
  display: none;
  padding: 0 1.4rem 1.1rem;
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}
details.faq-row[open] > .faq-row__body {
  display: block;
}
details.faq-row[open] > summary .faq-row__icon {
  transform: rotate(180deg);
}