/* 11. Câu Hỏi FAQ Đóng Mở (FAQ Accordion) */
.article-content-body .faq-accordion {
  margin: 2.25rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.article-content-body details.faq-item {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.25rem;
  background: var(--card);
  transition: all 0.2s ease;
}

.article-content-body details.faq-item[open] {
  border-color: var(--foreground);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04);
}

.article-content-body details.faq-item summary,
.article-content-body details.faq-item .faq-question {
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--foreground);
  user-select: none;
  line-height: 1.4;
}

.article-content-body details.faq-item summary::-webkit-details-marker {
  display: none;
}

.article-content-body details.faq-item summary::after {
  content: "▾";
  font-size: 0.95rem;
  transition: transform 0.2s ease;
  margin-left: 0.5rem;
  flex-shrink: 0;
}

.article-content-body details.faq-item[open] summary::after {
  transform: rotate(180deg);
}

.article-content-body details.faq-item .faq-answer {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--border);
  color: var(--muted-foreground);
  font-size: 0.925rem;
  line-height: 1.65;
}

.article-content-body details.faq-item .faq-answer p {
  margin: 0;
}

.article-content-body details.faq-item .faq-answer p + p {
  margin-top: 0.5rem;
}

/* 12. Khối Kêu Gọi Hành Động & Tải Tài Liệu (CTA & Download) */
.article-content-body .cta-box {
  background: linear-gradient(135deg, rgba(225, 29, 72, 0.06), rgba(139, 92, 246, 0.08));
  border: 1px solid rgba(225, 29, 72, 0.25);
  border-radius: 24px;
  padding: 2.25rem 2rem;
  margin: 3rem 0;
  text-align: center;
}

@media (max-width: 640px) {
  .article-content-body .cta-box {
    border-radius: 18px;
    padding: 1.5rem 1.15rem;
    margin: 2rem 0;
  }
}

.article-content-body .cta-box .cta-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--foreground);
  margin: 0 0 0.65rem;
  line-height: 1.3;
}

@media (min-width: 640px) {
  .article-content-body .cta-box .cta-title {
    font-size: 1.5rem;
  }
}

.article-content-body .cta-box .cta-desc {
  font-size: 0.95rem;
  color: var(--muted-foreground);
  margin: 0 auto 1.5rem;
  max-width: 580px;
  line-height: 1.6;
}

/* Download Card */
.article-content-body .download-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.25rem 1.5rem;
  margin: 2.25rem 0;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03);
  flex-wrap: nowrap;
}

@media (max-width: 640px) {
  .article-content-body .download-card {
    border-radius: 14px;
    padding: 1rem 1.15rem;
    gap: 0.85rem;
    flex-wrap: wrap;
  }
}

.article-content-body .download-icon {
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  white-space: nowrap;
  color: #2563eb;
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: 14px;
  background: rgba(59, 130, 246, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.article-content-body .download-info {
  flex: 1 1 auto;
  min-width: 0;
}

.article-content-body .download-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--foreground);
  margin-bottom: 0.25rem;
  line-height: 1.4;
}

.article-content-body .download-meta {
  font-size: 0.8rem;
  color: var(--muted-foreground);
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.article-content-body .download-card .btn-download {
  flex: 0 0 auto;
  white-space: nowrap;
}

@media (max-width: 640px) {
  .article-content-body .download-card .download-info {
    flex-basis: calc(100% - 4rem);
  }

  .article-content-body .download-card .btn-download {
    margin-left: auto;
  }
}

/* Button Component within Content */
.article-content-body .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.75rem;
  border-radius: 9999px;
  font-weight: 700;
  font-size: 0.925rem;
  transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
  text-decoration: none;
  cursor: pointer;
  border: none;
}

.article-content-body .btn-primary {
  background: var(--foreground);
  color: var(--background);
}

.article-content-body .btn-primary:hover {
  opacity: 0.92;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.article-content-body .btn-download {
  background: linear-gradient(135deg, #e11d48, #be123c);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(225, 29, 72, 0.25);
}

.article-content-body .btn-download:hover {
  opacity: 0.92;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(225, 29, 72, 0.35);
}

/* 13. Khung Tác Giả & Thẻ Tag */
.article-content-body .tag-cloud {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 2.25rem 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.article-content-body .tag-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--muted-foreground);
  margin-right: 0.25rem;
}

.article-content-body .tag-item {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background: var(--secondary);
  border: 1px solid var(--border);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--foreground);
  transition: all 0.15s ease;
  text-decoration: none;
}

.article-content-body .tag-item:hover {
  background: var(--foreground);
  color: var(--background);
}