.page-faq {
  --faq-idx: 246px;
  padding: 26px 0 84px;
  color: var(--tk-white);
}

/* ---------- 首屏 ---------- */
.page-faq .kb-crumbs {
  margin-bottom: 22px;
}

.page-faq .kb-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--tk-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--tk-cyan);
}

.page-faq .kb-eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--tk-cyan);
}

.page-faq .kb-title {
  margin: 16px 0 0;
  max-width: 22ch;
  font-size: clamp(30px, 5.2vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.012em;
  color: var(--tk-white);
}

.page-faq .kb-lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--tk-grey);
}

.page-faq .kb-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--tk-line);
}

.page-faq .kb-hero-meta span {
  font-family: var(--tk-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--tk-grey);
}

.page-faq .kb-hero-meta b {
  color: var(--tk-amber);
  font-weight: 600;
}

/* ---------- 首屏视觉 ---------- */
.page-faq .kb-hero-figure {
  margin: 32px 0 0;
  border: 1px solid var(--tk-line);
  border-radius: var(--tk-radius);
  overflow: hidden;
  background: linear-gradient(160deg, var(--tk-panel), var(--tk-ink));
}

.page-faq .kb-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  opacity: .86;
}

.page-faq .kb-hero-figure figcaption {
  padding: 12px 18px;
  border-top: 1px solid var(--tk-line);
  font-family: var(--tk-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--tk-grey);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .kb-layout {
  display: grid;
  gap: 32px;
  margin-top: 48px;
}

.page-faq .kb-index {
  border-top: 1px solid var(--tk-line);
  padding-top: 18px;
}

.page-faq .kb-index-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .kb-index-list::-webkit-scrollbar {
  display: none;
}

.page-faq .kb-index-list li {
  flex: none;
}

.page-faq .kb-index-list a {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 15px;
  border: 1px solid var(--tk-line);
  border-radius: 999px;
  color: var(--tk-grey);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .2s var(--tk-ease), color .2s var(--tk-ease), background .2s var(--tk-ease);
}

.page-faq .kb-index-num {
  font-family: var(--tk-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--tk-orange);
}

.page-faq .kb-index-count {
  display: none;
  font-family: var(--tk-mono);
  font-size: 11px;
  color: var(--tk-grey);
}

/* ---------- 目录条目 ---------- */
.page-faq .kb-sec {
  scroll-margin-top: 112px;
}

.page-faq .kb-sec + .kb-sec {
  margin-top: 58px;
}

.page-faq .kb-sec-head {
  display: flex;
  align-items: baseline;
  gap: 13px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--tk-line);
}

.page-faq .kb-sec-num {
  font-family: var(--tk-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--tk-orange);
}

.page-faq .kb-sec-title {
  margin: 0;
  font-size: clamp(21px, 2.6vw, 27px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--tk-white);
}

.page-faq .kb-sec-lead {
  margin: 14px 0 22px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--tk-grey);
}

/* ---------- 分类配图 ---------- */
.page-faq .kb-figure {
  margin: 0 0 24px;
  border: 1px solid var(--tk-line);
  border-radius: 12px;
  overflow: hidden;
  background: var(--tk-ink);
}

.page-faq .kb-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: .82;
}

.page-faq .kb-figure figcaption {
  padding: 11px 16px;
  border-top: 1px solid var(--tk-line);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--tk-grey);
}

/* ---------- 问答列表 ---------- */
.page-faq .kb-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .kb-list li {
  list-style: none;
}

.page-faq .faq-item {
  border: 1px solid var(--tk-line);
  border-radius: 12px;
  background: rgba(20, 38, 74, .26);
  transition: border-color .2s var(--tk-ease), background .2s var(--tk-ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(25, 227, 209, .45);
}

.page-faq .faq-item[open] {
  border-color: var(--tk-cyan);
  background: rgba(20, 38, 74, .62);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--tk-white);
  transition: color .2s var(--tk-ease);
}

.page-faq .faq-q::-webkit-details-marker {
  display: none;
}

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--tk-cyan);
  outline-offset: -2px;
  border-radius: 12px;
}

.page-faq .faq-q-idx {
  padding-top: 4px;
  font-family: var(--tk-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--tk-grey);
  transition: color .2s var(--tk-ease);
}

.page-faq .faq-item[open] .faq-q-idx {
  color: var(--tk-cyan);
}

.page-faq .faq-q-text {
  min-width: 0;
}

.page-faq .faq-sign {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  flex: none;
}

.page-faq .faq-sign::before,
.page-faq .faq-sign::after {
  content: "";
  position: absolute;
  background: var(--tk-grey);
  border-radius: 1px;
  transition: transform .24s var(--tk-ease), background .24s var(--tk-ease);
}

.page-faq .faq-sign::before {
  left: 0;
  right: 0;
  top: 7px;
  height: 2px;
}

.page-faq .faq-sign::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 2px;
}

.page-faq .faq-item[open] .faq-sign::before {
  background: var(--tk-cyan);
}

.page-faq .faq-item[open] .faq-sign::after {
  transform: scaleY(0);
}

.page-faq .faq-a p {
  margin: 0;
  padding: 0 18px 18px 46px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--tk-grey);
}

.page-faq .faq-a a {
  color: var(--tk-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-a a:hover {
  color: var(--tk-amber);
}

/* ---------- 分类小结条 ---------- */
.page-faq .kb-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin-top: 22px;
  padding: 12px 18px;
  border-left: 3px solid var(--tk-amber);
  border-radius: 0 10px 10px 0;
  background: linear-gradient(90deg, rgba(6, 15, 34, .96), rgba(20, 38, 74, .88));
}

.page-faq .kb-summary-num {
  font-family: var(--tk-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--tk-amber);
}

.page-faq .kb-summary-count {
  padding: 2px 9px;
  border: 1px solid rgba(25, 227, 209, .35);
  border-radius: 999px;
  font-family: var(--tk-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--tk-cyan);
}

.page-faq .kb-summary-text {
  flex: 1 1 auto;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--tk-grey);
  text-align: right;
}

/* ---------- 返回顶部 ---------- */
.page-faq .kb-totop {
  position: fixed;
  right: 20px;
  bottom: 22px;
  z-index: 24;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--tk-line);
  border-radius: 50%;
  background: rgba(6, 15, 34, .88);
  color: var(--tk-cyan);
  font-family: var(--tk-mono);
  font-size: 16px;
  line-height: 1;
  text-decoration: none;
  transition: border-color .2s var(--tk-ease), color .2s var(--tk-ease), background .2s var(--tk-ease);
}

.page-faq .kb-totop:hover,
.page-faq .kb-totop:focus-visible {
  border-color: var(--tk-cyan);
  background: rgba(20, 38, 74, .92);
  color: var(--tk-white);
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-a p {
    padding-left: 52px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-faq {
    padding-top: 34px;
  }

  .page-faq .kb-layout {
    grid-template-columns: var(--faq-idx) minmax(0, 1fr);
    gap: 54px;
    align-items: start;
    margin-top: 58px;
  }

  .page-faq .kb-index {
    position: sticky;
    top: 96px;
    border-top: none;
    padding-top: 0;
  }

  .page-faq .kb-index-list {
    display: block;
    overflow: visible;
    padding: 0;
  }

  .page-faq .kb-index-list li {
    flex: none;
  }

  .page-faq .kb-index-list li + li {
    margin-top: 4px;
  }

  .page-faq .kb-index-list a {
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr) auto;
    gap: 10px;
    padding: 11px 14px 11px 15px;
    border: none;
    border-left: 3px solid transparent;
    border-radius: 0 10px 10px 0;
    font-size: 15px;
  }

  .page-faq .kb-index-count {
    display: inline;
  }

  .page-faq .kb-index-list a:hover,
  .page-faq .kb-index-list a:focus-visible {
    color: var(--tk-white);
    background: rgba(20, 38, 74, .72);
    border-left-color: var(--tk-cyan);
    outline: none;
  }

  .page-faq:has(#kb-account:target) .kb-index-list a[href="#kb-account"],
  .page-faq:has(#kb-data:target) .kb-index-list a[href="#kb-data"],
  .page-faq:has(#kb-device:target) .kb-index-list a[href="#kb-device"],
  .page-faq:has(#kb-entry:target) .kb-index-list a[href="#kb-entry"],
  .page-faq:has(#kb-h2h:target) .kb-index-list a[href="#kb-h2h"],
  .page-faq:has(#kb-support:target) .kb-index-list a[href="#kb-support"] {
    color: var(--tk-white);
    background: rgba(20, 38, 74, .88);
    border-left-color: var(--tk-cyan);
  }

  .page-faq .kb-summary-text {
    text-align: right;
  }

  .page-faq .kb-totop {
    right: 28px;
    bottom: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-q,
  .page-faq .faq-q-idx,
  .page-faq .faq-sign::before,
  .page-faq .faq-sign::after,
  .page-faq .kb-index-list a,
  .page-faq .kb-totop {
    transition: none;
  }
}