/* page-faq 专属样式 */
.page-faq {
  --faq-sidebar-width: 200px;
  --faq-gap: 2rem;
  --faq-border-color: rgba(138, 43, 226, 0.4);
  --faq-hover-glow: rgba(57, 255, 20, 0.2);
  --faq-answer-bg: linear-gradient(135deg, rgba(22, 27, 34, 0.8), rgba(11, 26, 46, 0.6));
  --faq-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: block;
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

/* 面包屑 */
.page-faq .breadcrumb {
  font-size: 0.875rem;
  color: var(--color-text-secondary, #8B949E);
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}
.page-faq .breadcrumb-link {
  color: var(--color-secondary, #8A2BE2);
  text-decoration: none;
  transition: color var(--faq-transition);
}
.page-faq .breadcrumb-link:hover {
  color: var(--color-accent, #39FF14);
}
.page-faq .breadcrumb-sep {
  margin: 0 0.5rem;
}
.page-faq .breadcrumb-current {
  color: var(--color-text, #E6EDF3);
}

/* 左右布局 */
.page-faq .faq-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
@media (min-width: 768px) {
  .page-faq .faq-layout {
    flex-direction: row;
    gap: var(--faq-gap);
  }
  .page-faq .faq-sidebar {
    width: var(--faq-sidebar-width);
    flex-shrink: 0;
    position: sticky;
    top: 80px;
    align-self: flex-start;
  }
  .page-faq .faq-content {
    flex: 1;
    min-width: 0;
  }
}

/* 侧边目录 */
.page-faq .faq-sidebar {
  margin-bottom: 1rem;
}
.page-faq .faq-toc {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}
@media (min-width: 768px) {
  .page-faq .faq-toc {
    display: block;
    border-left: 2px solid var(--faq-border-color);
    padding-left: 1rem;
  }
  .page-faq .faq-toc li {
    margin-bottom: 0.75rem;
  }
}
.page-faq .toc-link {
  display: inline-block;
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text-secondary, #8B949E);
  text-decoration: none;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  transition: all var(--faq-transition);
}
.page-faq .toc-link:hover {
  color: var(--color-accent, #39FF14);
  background: var(--faq-hover-glow);
}

/* 标题 */
.page-faq .faq-title {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-weight: 800;
  font-size: 2rem;
  color: var(--color-text, #E6EDF3);
  margin: 0 0 2rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-bottom: 2px solid var(--color-secondary, #8A2BE2);
  padding-bottom: 0.5rem;
}
.page-faq .section-heading {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--color-secondary, #8A2BE2);
  margin: 2rem 0 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.page-faq .section-number {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-weight: 500;
  font-size: 1.25rem;
  color: var(--color-accent, #39FF14);
  opacity: 0.8;
}

/* 手风琴 */
.page-faq .faq-questions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.page-faq .faq-item {
  background: var(--color-surface, #161B22);
  border: 2px solid var(--faq-border-color);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  transition: border-color var(--faq-transition), box-shadow var(--faq-transition);
}
.page-faq .faq-item:hover {
  border-color: var(--color-secondary, #8A2BE2);
  box-shadow: 0 4px 24px var(--faq-hover-glow);
}
.page-faq .faq-question {
  display: block;
  padding: 1rem 1.25rem;
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text, #E6EDF3);
  cursor: pointer;
  position: relative;
  transition: background var(--faq-transition), color var(--faq-transition);
  list-style: none; /* 移除默认三角 */
  user-select: none;
}
.page-faq .faq-question::-webkit-details-marker {
  display: none;
}
.page-faq .faq-question::after {
  content: '+';
  position: absolute;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.25rem;
  color: var(--color-secondary, #8A2BE2);
  transition: transform var(--faq-transition);
}
.page-faq .faq-item[open] .faq-question::after {
  content: '−';
  transform: translateY(-50%) rotate(180deg);
}
.page-faq .faq-item[open] .faq-question {
  border-bottom: 1px solid var(--faq-border-color);
  background: rgba(138, 43, 226, 0.1);
}
.page-faq .faq-question:hover {
  background: rgba(57, 255, 20, 0.05);
}
.page-faq .faq-answer {
  padding: 1rem 1.25rem;
  background: var(--faq-answer-bg);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text, #E6EDF3);
}
.page-faq .faq-answer p {
  margin: 0 0 0.75rem;
}
.page-faq .faq-answer p:last-child {
  margin-bottom: 0;
}

/* 图片 */
.page-faq .faq-image-wrap {
  margin: 1rem 0 0;
  border: 1px solid var(--faq-border-color);
  border-radius: 6px;
  overflow: hidden;
  max-width: 100%;
  display: inline-block;
}
.page-faq .faq-img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  background: var(--color-bg, #0D1117);
}
.page-faq .faq-image-wrap figcaption {
  font-size: 0.8rem;
  color: var(--color-text-secondary, #8B949E);
  padding: 0.25rem 0.5rem;
  background: rgba(0, 0, 0, 0.3);
}

/* 额外链接 */
.page-faq .faq-additional {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--faq-border-color);
}
.page-faq .faq-more {
  color: var(--color-text-secondary, #8B949E);
  font-size: 0.9rem;
}
.page-faq .faq-link {
  color: var(--color-secondary, #8A2BE2);
  text-decoration: none;
  transition: color var(--faq-transition);
}
.page-faq .faq-link:hover {
  color: var(--color-accent, #39FF14);
  text-decoration: underline;
}

/* 响应式调整 */
@media (max-width: 767px) {
  .page-faq {
    padding: 1rem 0.75rem 2rem;
  }
  .page-faq .faq-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
  }
  .page-faq .section-heading {
    font-size: 1.25rem;
    margin-top: 1.5rem;
  }
  .page-faq .faq-question {
    font-size: 0.95rem;
    padding: 0.75rem 1rem;
  }
  .page-faq .faq-answer {
    font-size: 0.9rem;
    padding: 0.75rem 1rem;
  }
  .page-faq .breadcrumb {
    font-size: 0.8rem;
  }
}