.page-faq {
  --faq-gap: 28px;
  --faq-line-ice: rgba(88, 200, 242, .55);
}

.page-faq img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* 顶部横幅与标题区 */
.page-faq .faq-top {
  padding-top: 24px;
}

.page-faq .faq-top__media {
  margin: 0;
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
}

.page-faq .faq-top__grid {
  display: grid;
  gap: 32px;
  margin-top: 30px;
}

.page-faq .faq-top__intro .ky-h1 {
  margin: 12px 0 18px;
}

.page-faq .faq-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-stats li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-stats__num {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1;
}

.page-faq .faq-stats__txt {
  font-size: 14px;
  color: var(--stone);
}

/* 关键词索引条 */
.page-faq .faq-finder {
  display: grid;
  gap: 16px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .015));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.page-faq .faq-finder__count {
  margin: 0;
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--stone);
}

.page-faq .faq-finder__count .ky-num {
  font-size: 18px;
  font-weight: 700;
  color: var(--mist);
}

.page-faq .faq-chips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-chips a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  color: var(--mist);
  font-size: 14px;
  text-decoration: none;
  transition: border-color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-chips a:hover {
  border-color: var(--line-jade);
  background: rgba(0, 201, 123, .08);
  transform: translateY(-2px);
}

/* 快答带 */
.page-faq .faq-quick__title {
  margin: 0 0 20px;
}

.page-faq .faq-quick__grid {
  display: grid;
  gap: 16px;
}

.page-faq .faq-quick__card {
  display: block;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--coal);
  color: inherit;
  text-decoration: none;
  transition: transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .faq-quick__card:hover {
  transform: translateY(-4px);
  border-color: var(--line-jade);
  box-shadow: var(--shadow-lift);
}

.page-faq .faq-quick__q {
  margin: 12px 0 8px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-faq .faq-quick__a {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--stone);
}

/* 目录 + 问答主体 */
.page-faq .faq-shell {
  display: grid;
  gap: 32px;
}

.page-faq .faq-toc ol {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-toc a {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 12px;
  border-left: 2px solid var(--line);
  color: var(--stone);
  font-size: 14px;
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible {
  color: var(--mist);
  border-left-color: var(--jade);
  background: rgba(255, 255, 255, .03);
}

.page-faq .faq-toc .ky-num {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ice);
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--top-h) + 24px);
}

.page-faq .faq-group + .faq-group {
  margin-top: 46px;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-group__no {
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--ice);
}

.page-faq .faq-group__head .ky-h3 {
  margin: 0;
}

/* 手风琴条目 */
.page-faq .faq-item {
  position: relative;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  scroll-margin-top: calc(var(--top-h) + 32px);
  transition: background .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15px;
  bottom: 15px;
  width: 3px;
  border-radius: 2px;
  background: var(--faq-line-ice);
  opacity: 0;
  transform: scaleY(.35);
  transform-origin: top center;
  transition: opacity .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-item[open] {
  background: rgba(88, 200, 242, .05);
  border-color: var(--line);
}

.page-faq .faq-item[open]::before {
  opacity: 1;
  transform: scaleY(1);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  min-height: 44px;
  padding: 16px 18px 16px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 17px;
  font-weight: 600;
  color: var(--mist);
  transition: color .2s var(--ease);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::after {
  content: "+";
  flex: none;
  margin-left: auto;
  padding-left: 12px;
  font-size: 20px;
  line-height: 1;
  font-weight: 700;
  color: var(--jade);
}

.page-faq .faq-item[open] > summary::after {
  content: "–";
}

.page-faq .faq-item > summary:hover {
  color: var(--jade);
}

.page-faq .faq-item__no {
  flex: none;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--stone);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
}

.page-faq .faq-item__a {
  padding: 0 20px 18px 20px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--stone);
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faqReveal .2s var(--ease);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 64ch;
}

.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__a ol,
.page-faq .faq-item__a ul {
  margin: 0 0 10px;
  padding-left: 20px;
}

.page-faq .faq-item__a li {
  margin-bottom: 6px;
}

@keyframes faqReveal {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* 视频与设备分组：文字 + 配图 */
.page-faq .faq-group__body {
  display: grid;
  gap: 24px;
}

.page-faq .faq-group__figure {
  margin: 0;
}

.page-faq .faq-group__figure .ky-note {
  display: block;
  margin-top: 10px;
}

/* 人工支持 */
.page-faq .faq-contact__card {
  padding: 28px 22px;
}

.page-faq .faq-contact__card .ky-h3 {
  margin: 12px 0 14px;
}

.page-faq .faq-contact__text {
  margin: 0 0 12px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--stone);
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.page-faq .faq-contact__actions .ky-btn {
  text-decoration: none;
}

/* 中等屏幕 */
@media (min-width: 760px) {
  .page-faq .faq-quick__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-finder {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 24px;
  }
}

/* 桌面端 */
@media (min-width: 900px) {
  .page-faq .faq-top {
    padding-top: 32px;
  }

  .page-faq .faq-top__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
    gap: 56px;
    margin-top: 40px;
  }

  .page-faq .faq-stats {
    gap: 14px;
  }

  .page-faq .faq-stats__num {
    font-size: 34px;
  }

  .page-faq .faq-contact__card {
    padding: 40px 36px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-shell {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--top-h) + 28px);
    align-self: start;
  }

  .page-faq .faq-group--split .faq-group__body {
    grid-template-columns: minmax(0, 1fr) 280px;
    align-items: start;
    gap: 32px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-group--split .faq-group__body {
    grid-template-columns: minmax(0, 1fr) 320px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }

  .page-faq .faq-chips a:hover,
  .page-faq .faq-quick__card:hover {
    transform: none;
  }
}