/* ===== 页面专属样式：page-faq ===== */
.page-faq {
  --faq-sidebar-width: 220px;
  --faq-gap: 2rem;
  --faq-card-border: var(--border-shadow);
  --faq-card-bg: #FFFFFF;
  --faq-card-radius: 0;
  --faq-toggle-hover: var(--cream-bg);
  --faq-answer-bg: #FCFAF5;
  --faq-category-active-bg: var(--red-orange);
  --faq-category-active-text: #FFFFFF;
}

/* 基础布局 */
.page-faq__hero {
  padding: 2rem var(--content-padding) 1.5rem;
  max-width: var(--content-max-width);
  margin: 0 auto;
  border-bottom: 1px solid var(--border-shadow);
  margin-bottom: 2rem;
}

.page-faq__title {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 400;
  color: var(--dark-brown);
  margin: 0 0 0.5rem;
  line-height: 1.1;
}

.page-faq__subtitle {
  font-family: var(--font-body);
  font-size: 1.1rem;
  color: var(--mid-gray);
  margin: 0;
  max-width: 600px;
}

/* 面包屑导航 */
.breadcrumb {
  padding: 1rem var(--content-padding) 0;
  max-width: var(--content-max-width);
  margin: 0 auto;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--mid-gray);
}

.breadcrumb a {
  color: var(--dark-gray);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--red-orange);
  text-decoration: underline;
}

.breadcrumb__separator {
  margin: 0 0.5rem;
  color: var(--border-shadow);
}

/* 双栏布局 */
.page-faq__layout {
  display: flex;
  gap: var(--faq-gap);
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 var(--content-padding) 3rem;
}

.page-faq__sidebar {
  flex: 0 0 var(--faq-sidebar-width);
  min-width: 180px;
}

.page-faq__sidebar-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--dark-brown);
  margin: 0 0 1rem;
  padding: 0.5rem 0;
  border-bottom: 2px solid var(--red-orange);
  display: inline-block;
}

.page-faq__category-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.page-faq__category-tag {
  display: block;
  width: 100%;
  padding: 0.65rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--dark-gray);
  background: transparent;
  border: 1px solid var(--border-shadow);
  border-radius: 0;
  cursor: pointer;
  text-align: left;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.page-faq__category-tag:hover {
  background: var(--cream-bg);
  border-color: var(--red-orange);
}

.page-faq__category-tag.is-active {
  background: var(--faq-category-active-bg);
  color: var(--faq-category-active-text);
  border-color: var(--faq-category-active-bg);
}

/* 问题列表区 */
.page-faq__content {
  flex: 1;
  min-width: 0;
}

.page-faq__group-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--dark-brown);
  margin: 0 0 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-shadow);
}

.page-faq__faq-group {
  display: block;
}

/* 问答卡片 */
.page-faq__faq-card {
  margin-bottom: 1rem;
  border: 1px solid var(--faq-card-border);
  background: var(--faq-card-bg);
  box-shadow: var(--card-shadow);
  transition: box-shadow 0.2s;
}

.page-faq__faq-card:hover {
  box-shadow: var(--card-shadow-hover);
}

.page-faq__faq-toggle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 1rem 1.25rem;
  background: transparent;
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 1rem;
  text-align: left;
  color: var(--dark-brown);
  transition: background 0.2s;
}

.page-faq__faq-toggle:hover {
  background: var(--faq-toggle-hover);
}

.page-faq__faq-toggle .card__index {
  font-family: var(--font-body);
  font-weight: 700;
  font-style: italic;
  color: var(--red-orange);
  font-size: 1.1rem;
  flex-shrink: 0;
  min-width: 2.2rem;
}

.page-faq__faq-question {
  flex: 1;
  font-weight: 500;
  line-height: 1.4;
}

.page-faq__faq-icon {
  font-size: 1.5rem;
  font-weight: 300;
  line-height: 1;
  color: var(--red-orange);
  flex-shrink: 0;
  transition: transform 0.2s;
}

.page-faq__faq-toggle[aria-expanded="true"] .page-faq__faq-icon {
  transform: rotate(45deg);
}

.page-faq__faq-answer {
  display: none;
  overflow: hidden;
}

.page-faq__faq-answer[aria-hidden="false"] {
  display: block;
}

.page-faq__faq-answer-inner {
  padding: 0 1.25rem 1.25rem;
  border-top: 1px dashed var(--border-shadow);
  padding-top: 1rem;
  margin-top: 0;
  background: var(--faq-answer-bg);
}

.page-faq__faq-answer-inner p {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--dark-gray);
  margin: 0 0 1rem;
}

.page-faq__faq-answer-inner a {
  color: var(--red-orange);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-faq__faq-answer-inner a:hover {
  color: var(--dark-brown);
}

/* 图片 */
.page-faq__figure {
  margin: 1rem 0 0;
  padding: 0;
}

.page-faq__figure-img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--border-shadow);
  object-fit: cover;
}

.page-faq__figure .footnote {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--mid-gray);
  margin-top: 0.35rem;
  padding-left: 0.25rem;
  font-style: italic;
}

/* CTA 区域 */
.page-faq__cta {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 2rem var(--content-padding) 3rem;
  border-top: 1px solid var(--border-shadow);
  text-align: center;
}

.page-faq__cta p {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--dark-gray);
  margin: 0;
}

.page-faq__cta a {
  color: var(--red-orange);
  text-decoration: underline;
  font-weight: 600;
  text-underline-offset: 2px;
}

.page-faq__cta a:hover {
  color: var(--dark-brown);
}

/* ===== 移动端优先：窄屏适配 ===== */
@media (max-width: 768px) {
  .page-faq__hero {
    padding: 1.5rem 1rem 1rem;
    margin-bottom: 1.5rem;
  }

  .page-faq__title {
    font-size: 2.2rem;
  }

  .page-faq__subtitle {
    font-size: 0.95rem;
  }

  .breadcrumb {
    padding: 0.75rem 1rem 0;
    font-size: 0.8rem;
  }

  .page-faq__layout {
    flex-direction: column;
    gap: 1.5rem;
    padding: 0 1rem 2rem;
  }

  .page-faq__sidebar {
    flex: none;
    min-width: unset;
    width: 100%;
  }

  .page-faq__sidebar-title {
    display: block;
    margin-bottom: 0.75rem;
  }

  .page-faq__category-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.35rem;
  }

  .page-faq__category-tag {
    padding: 0.45rem 0.8rem;
    font-size: 0.85rem;
    width: auto;
    flex: 0 0 auto;
  }

  .page-faq__group-title {
    font-size: 1.2rem;
    margin-bottom: 1rem;
  }

  .page-faq__faq-toggle {
    padding: 0.85rem 1rem;
    font-size: 0.95rem;
  }

  .page-faq__faq-toggle .card__index {
    font-size: 1rem;
    min-width: 1.8rem;
  }

  .page-faq__faq-answer-inner {
    padding: 0.85rem 1rem 1rem;
  }

  .page-faq__faq-answer-inner p {
    font-size: 0.9rem;
  }

  .page-faq__figure-img {
    width: 100% !important;
    height: auto !important;
  }

  .page-faq__cta {
    padding: 1.5rem 1rem 2rem;
  }

  .page-faq__cta p {
    font-size: 0.9rem;
  }
}

/* 桌面端额外优化 */
@media (min-width: 769px) {
  .page-faq__sidebar {
    position: sticky;
    top: calc(var(--header-height) + 1rem);
    align-self: flex-start;
    max-height: calc(100vh - var(--header-height) - 2rem);
    overflow-y: auto;
  }
}