.page-faq .faq-layout {
  display: flex;
  flex-direction: column;
  gap: var(--gutter);
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: var(--gutter);
}
.page-faq .faq-index-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.page-faq .faq-index-link {
  display: block;
  padding: 0.5rem 1rem;
  background: var(--color-card-bg);
  color: var(--color-text-primary);
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.2s;
}
.page-faq .faq-index-link:hover {
  background: var(--color-primary);
}
.page-faq .page-title {
  font-size: 2rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: 1rem;
  color: var(--color-text-primary);
}
.page-faq .faq-section-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  margin: 1.5rem 0 1rem;
  color: var(--color-text-primary);
}
.page-faq .faq-number {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-primary);
  font-family: var(--font-mono);
}
.page-faq .faq-item {
  background: var(--color-card-bg);
  border-radius: 8px;
  margin-bottom: 0.75rem;
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.page-faq .faq-item summary {
  padding: 0.75rem 1rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary::after {
  content: "▾";
  transition: transform 0.3s ease;
}
.page-faq .faq-item[open] summary::after {
  transform: rotate(180deg);
}
.page-faq .faq-item .faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 1rem 0 1rem;
  color: var(--color-text-secondary);
}
.page-faq .faq-item[open] .faq-answer {
  max-height: 600px;
  padding: 0 1rem 1rem 1rem;
}
.page-faq .highlight {
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
}
.page-faq .faq-image {
  margin: 0.5rem 0 1rem;
}
.page-faq .faq-image img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}
.page-faq .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}
.page-faq .faq-search {
  margin-bottom: 1rem;
}
.page-faq .faq-search input[type="text"] {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text-primary);
  font-size: 1rem;
  transition: border-color 0.2s;
}
.page-faq .faq-search input[type="text"]:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(26,115,232,0.2);
}
.page-faq [data-observe] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
@media (min-width: 768px) {
  .page-faq .faq-layout {
    flex-direction: row;
    align-items: flex-start;
  }
  .page-faq .faq-index {
    flex: 0 0 220px;
    position: sticky;
    top: calc(var(--header-height) + var(--gutter));
  }
  .page-faq .faq-index-list {
    flex-direction: column;
  }
  .page-faq .faq-content {
    flex: 1;
  }
}