.page-faq {
  --faq-menu-width: 220px;
  --faq-gap: 32px;
  --faq-border-color: var(--border-subtle);
  --faq-accent-bar: var(--brand-primary);
  --faq-panel-bg: var(--bg-secondary);
  --faq-trigger-hover: var(--bg-accent);
  --faq-accordion-radius: 4px;

  display: block;
  width: 100%;
  padding: 40px 0 80px;
  color: var(--text-primary);
  background: var(--bg-primary);
  font-family: var(--font-body);
}

/* 容器复用共享 .container 但这里强化间距 */
.page-faq .container.page-faq__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* 面包屑 */
.page-faq__breadcrumb {
  margin-bottom: 32px;
  font-size: var(--font-size-small, 0.875rem);
  color: var(--text-secondary);
  font-family: var(--font-mono);
}
.page-faq__breadcrumb .breadcrumb__link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-faq__breadcrumb .breadcrumb__link:hover,
.page-faq__breadcrumb .breadcrumb__link:focus-visible {
  color: var(--brand-primary);
}
.page-faq__breadcrumb .breadcrumb__sep {
  margin: 0 6px;
  color: var(--border-subtle);
}
.page-faq__breadcrumb .breadcrumb__current {
  color: var(--text-primary);
}

/* 双栏布局 */
.page-faq__layout {
  display: flex;
  gap: var(--faq-gap);
  align-items: flex-start;
}

/* 左侧菜单 */
.page-faq__menu {
  width: var(--faq-menu-width);
  flex-shrink: 0;
  position: sticky;
  top: 100px;
  background: var(--bg-secondary);
  border: 1px solid var(--faq-border-color);
  border-radius: var(--faq-accordion-radius);
  padding: 24px 20px;
}
.page-faq__menu-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-accent);
  margin: 0 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--faq-border-color);
}
.page-faq__menu-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.page-faq__menu-link {
  display: block;
  padding: 10px 12px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: all var(--transition-fast);
  border-radius: 2px;
}
.page-faq__menu-link:hover,
.page-faq__menu-link:focus-visible {
  color: var(--text-primary);
  background: var(--faq-trigger-hover);
  border-left-color: var(--faq-accent-bar);
}
.page-faq__menu-cta {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--faq-border-color);
  text-align: center;
}
.page-faq__menu-cta p {
  margin: 0 0 10px;
}
.page-faq__menu-btn {
  font-size: 0.85rem;
  padding: 8px 18px;
}

/* 右侧内容 */
.page-faq__content {
  flex: 1;
  min-width: 0;
}
.page-faq__title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.15;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 8px;
  color: var(--text-primary);
}
.page-faq__subtitle {
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0 0 40px;
  max-width: 600px;
}

/* 区块标题 */
.page-faq__section {
  margin-bottom: 48px;
}
.page-faq__section--contact {
  margin-bottom: 24px;
}
.page-faq__section-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 20px;
  padding: 0 0 8px;
  border-bottom: 2px solid var(--faq-accent-bar);
  display: inline-block;
  color: var(--text-primary);
  letter-spacing: 0.01em;
}

/* 折叠面板容器 */
.page-faq__accordion {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* 单个项 */
.page-faq__accordion-item {
  background: var(--faq-panel-bg);
  border: 1px solid var(--faq-border-color);
  border-radius: var(--faq-accordion-radius);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}
.page-faq__accordion-item:focus-within {
  border-color: var(--faq-accent-bar);
}

/* 触发器 */
.page-faq__accordion-trigger {
  display: flex;
  align-items: center;
  width: 100%;
  gap: 12px;
  padding: 16px 20px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: background var(--transition-fast);
  position: relative;
}
.page-faq__accordion-trigger::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: transparent;
  transition: background var(--transition-fast);
}
.page-faq__accordion-trigger:hover,
.page-faq__accordion-trigger:focus-visible {
  background: var(--faq-trigger-hover);
}
.page-faq__accordion-trigger[aria-expanded="true"]::before {
  background: var(--faq-accent-bar);
}

/* 编号 */
.page-faq__accordion-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  flex-shrink: 0;
  min-width: 24px;
}

/* 问题文本 */
.page-faq__accordion-q {
  flex: 1;
}

/* 箭头图标 */
.page-faq__accordion-icon {
  flex-shrink: 0;
  color: var(--text-secondary);
  transition: transform var(--transition-smooth);
}
.page-faq__accordion-trigger[aria-expanded="true"] .page-faq__accordion-icon {
  transform: rotate(180deg);
}

/* 面板 */
.page-faq__accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-smooth);
}
.page-faq__accordion-trigger[aria-expanded="true"] + .page-faq__accordion-panel {
  max-height: 600px; /* 足够展开内容 */
}

/* 面板内容 */
.page-faq__accordion-content {
  padding: 0 20px 20px 56px; /* 偏移对齐编号 + 间距 */
  font-size: 0.93rem;
  line-height: 1.7;
  color: var(--text-secondary);
}
.page-faq__accordion-content p {
  margin: 0 0 12px;
}
.page-faq__accordion-content p:last-child {
  margin-bottom: 0;
}

/* 内联链接 */
.page-faq__inline-link {
  color: var(--brand-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-fast);
}
.page-faq__inline-link:hover,
.page-faq__inline-link:focus-visible {
  color: var(--brand-primary);
}

/* 图片包装 */
.page-faq__img-wrapper {
  margin-top: 16px;
  background: var(--bg-accent);
  border: 1px solid var(--faq-border-color);
  border-radius: 4px;
  padding: 8px;
}
.page-faq__img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 2px;
}
.page-faq__img-wrapper .caption {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

/* 联系方式列表 */
.page-faq__contact-list {
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.page-faq__contact-list li {
  padding: 6px 0 6px 12px;
  border-left: 3px solid var(--faq-border-color);
}
.page-faq__contact-link {
  color: var(--brand-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}
.page-faq__contact-link:hover,
.page-faq__contact-link:focus-visible {
  color: var(--brand-primary);
  text-decoration: underline;
}
.page-faq__contact-note {
  margin: 8px 0 0;
  font-style: italic;
}

/* 信任声明 */
.page-faq__trust {
  margin-top: 40px;
  padding: 20px 24px;
  background: var(--bg-accent);
  border-left: 4px solid var(--faq-accent-bar);
  border-radius: 4px;
}
.page-faq__trust .mono {
  color: var(--faq-accent-bar);
  font-weight: 700;
}

/* ================= 移动端优先调整 ================= */
@media (max-width: 900px) {
  .page-faq .container.page-faq__inner {
    padding: 0 16px;
  }

  .page-faq__layout {
    flex-direction: column;
    gap: 20px;
  }

  .page-faq__menu {
    position: static;
    width: 100%;
    padding: 16px;
  }

  .page-faq__menu-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px;
  }
  .page-faq__menu-link {
    padding: 8px 14px;
    font-size: 0.85rem;
    border-left: none;
    border-bottom: 2px solid transparent;
    border-radius: 0;
  }
  .page-faq__menu-link:hover,
  .page-faq__menu-link:focus-visible {
    border-left-color: transparent;
    border-bottom-color: var(--faq-accent-bar);
  }

  .page-faq__title {
    font-size: 1.6rem;
  }

  .page-faq__accordion-content {
    padding: 0 16px 16px 48px;
  }

  .page-faq__section-title {
    font-size: 1.25rem;
  }
}

@media (max-width: 480px) {
  .page-faq {
    padding: 24px 0 48px;
  }

  .page-faq__title {
    font-size: 1.35rem;
  }

  .page-faq__subtitle {
    font-size: 0.85rem;
    margin-bottom: 28px;
  }

  .page-faq__accordion-trigger {
    padding: 12px 14px;
    gap: 8px;
    font-size: 0.9rem;
  }

  .page-faq__accordion-content {
    padding: 0 14px 14px 40px;
    font-size: 0.88rem;
  }

  .page-faq__menu-list {
    flex-direction: column;
  }

  .page-faq__contact-list li {
    padding-left: 8px;
    font-size: 0.88rem;
  }
}

.page-faq {
  --font-size-small: 1rem;
}