/* ============================================================
   优科生物官网 - 问答知识库样式（列表页 + 详情页共用）
   依赖：css/global.css（CSS 变量、.container、导航与页脚）
         css/news.css（page-hero / 布局栅格 / 侧栏 / 分页 / 正文排版）
   ============================================================ */

/* ---------- 横幅：搜索区 ---------- */
.page-hero--faq {
  padding: 44px 0 52px;
}

.page-hero--faq .page-hero__title,
.page-hero--faq .page-hero__desc {
  text-align: center;
}

.page-hero--faq .breadcrumb {
  justify-content: flex-start;
}

.faq-search {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 640px;
  margin: 26px auto 0;
}

.faq-search__input {
  flex: 1;
  min-width: 0;
  height: 50px;
  padding: 0 22px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  font-size: 15px;
  color: var(--color-text);
  background: #fff;
  outline: none;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.faq-search__input::placeholder {
  color: var(--color-text-secondary);
}

.faq-search__input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.18);
}

.faq-search__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  height: 50px;
  padding: 0 26px;
  border: none;
  border-radius: 999px;
  background: #fff;
  color: var(--color-primary-dark);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
  transition: background 0.2s, color 0.2s;
}

.faq-search__btn:hover {
  background: var(--color-accent);
  color: var(--color-primary-dark);
}

/* 热门搜索词 */
.faq-hotwords {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 18px;
}

.faq-hotwords__label {
  color: rgba(255, 255, 255, 0.75);
  font-size: 13px;
}

.faq-hotwords__tag {
  padding: 4px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  font-size: 13px;
  transition: background 0.2s, border-color 0.2s;
}

.faq-hotwords__tag:hover {
  background: rgba(255, 255, 255, 0.28);
  border-color: rgba(255, 255, 255, 0.5);
}

/* 统计 */
.faq-stat {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 20px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
}

.faq-stat svg {
  flex-shrink: 0;
}

/* ---------- 分类筛选条 ---------- */
.faq-catsbar {
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  padding: 16px 0;
}

.faq-cats {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.faq-cat {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.4;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.faq-cat:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.faq-cat.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.faq-cat__count {
  font-size: 12px;
  opacity: 0.72;
}

/* 二级分类 */
.faq-subcats {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--color-border);
}

.faq-subcat {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 13px;
  border-radius: 999px;
  background: var(--color-bg-soft);
  color: var(--color-text-secondary);
  font-size: 13px;
  line-height: 1.5;
  transition: color 0.2s, background 0.2s;
}

.faq-subcat:hover {
  color: var(--color-primary);
  background: #e6f4ec;
}

.faq-subcat.is-active {
  background: var(--color-primary);
  color: #fff;
}

.faq-subcat__count {
  font-size: 11px;
  opacity: 0.72;
}

/* ---------- 列表头部 ---------- */
.faq-list-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.faq-list-head__title {
  font-size: 20px;
  line-height: 1.4;
  color: var(--color-text);
}

.faq-list-head__count {
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* ---------- 问答列表 ---------- */
.faq-list {
  margin-bottom: 8px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin-bottom: 14px;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.faq-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 0;
}

.faq-item__badge {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-top: 1px;
}

.faq-item__title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--color-text);
}

.faq-item__title:hover {
  color: var(--color-primary);
}

.faq-item__excerpt {
  margin: 10px 0 0 40px;
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.faq-item__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 12px 0 0 40px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.faq-item__tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 11px;
  border-radius: 999px;
  background: var(--color-bg-soft);
  color: var(--color-primary);
  font-size: 12px;
  line-height: 1.7;
}

.faq-item__tag:hover {
  background: #e6f4ec;
}

.faq-item__tag--sub {
  background: #f0f7f1;
  color: var(--color-text-secondary);
}

.faq-item__tag--sub:hover {
  color: var(--color-primary);
}

.faq-item__date {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-left: auto;
}

/* ---------- 详情页 ---------- */
.faq-hero-title {
  font-size: 26px;
  line-height: 1.45;
}

.faq-detail-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 30px;
}

.faq-qhead {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-bottom: 18px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.faq-qhead__badge {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
}

.faq-qhead__title {
  font-size: 20px;
  line-height: 1.55;
  color: var(--color-text);
  margin: 4px 0 0;
}

.faq-answer__label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 14px;
}

.faq-answer__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 7px;
  background: var(--color-bg-soft);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 700;
}

/* 关键词区 */
.faq-kw {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px dashed var(--color-border);
}

.faq-kw__label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--color-text-secondary);
  font-size: 13px;
}

.faq-kw__tag {
  display: inline-flex;
  padding: 3px 12px;
  border-radius: 999px;
  background: var(--color-bg-soft);
  color: var(--color-primary);
  font-size: 12px;
  transition: background 0.2s, color 0.2s;
}

.faq-kw__tag:hover {
  background: var(--color-primary);
  color: #fff;
}

/* 相关问答列表 */
.faq-rel {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-rel__item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.faq-rel__item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.faq-rel__badge {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 7px;
  background: var(--color-bg-soft);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
}

.faq-rel__text {
  flex: 1;
  min-width: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.faq-rel__item:hover .faq-rel__text {
  color: var(--color-primary);
}

.faq-rel__tag {
  flex-shrink: 0;
  display: inline-flex;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--color-bg-soft);
  color: var(--color-text-secondary);
  font-size: 12px;
}

.faq-rel__arrow {
  flex-shrink: 0;
  color: var(--color-text-secondary);
  transition: color 0.2s, transform 0.2s;
}

.faq-rel__item:hover .faq-rel__arrow {
  color: var(--color-primary);
  transform: translateX(2px);
}

/* ---------- 响应式 ---------- */
@media (max-width: 991px) {
  .page-hero--faq {
    padding: 36px 0 44px;
  }

  .faq-search {
    margin-top: 20px;
  }

  .faq-search__input,
  .faq-search__btn {
    height: 44px;
  }

  .faq-search__btn {
    padding: 0 20px;
  }

  .faq-hotwords__label {
    width: 100%;
    text-align: center;
  }

  .faq-catsbar {
    padding: 12px 0;
  }

  .faq-item {
    padding: 15px 16px;
  }

  .faq-item__excerpt,
  .faq-item__meta {
    margin-left: 0;
  }

  .faq-item__date {
    margin-left: 0;
    width: 100%;
  }

  .faq-hero-title {
    font-size: 22px;
  }

  .faq-detail-card {
    padding: 20px 16px;
  }

  .faq-qhead__title {
    font-size: 17px;
  }
}