.page-faq {
  --faq-rail: 236px;
  background: var(--lc-bg);
  padding: 26px 0 76px;
  color: var(--lc-text);
}

.page-faq .lc-container {
  padding-inline: 18px;
}

/* ---------- 顶部标题区 ---------- */
.page-faq .faq-top {
  max-width: 760px;
  padding-top: 14px;
}

.page-faq .faq-top h1 {
  margin: 10px 0 14px;
  font-size: 26px;
  line-height: 1.28;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--lc-ink);
}

.page-faq .faq-top__lead {
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.75;
  max-width: 68ch;
}

.page-faq .faq-top__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  margin: 0;
  padding: 16px 0 0;
  list-style: none;
  border-top: 1px solid var(--lc-line);
}

.page-faq .faq-top__stats li {
  font-size: 14px;
  color: var(--lc-muted);
}

.page-faq .faq-top__stats strong {
  display: inline-block;
  margin-right: 6px;
  font-family: var(--lc-font-mono);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--lc-ink);
}

/* ---------- 主结构：索引轨 + 问答列 ---------- */
.page-faq .faq-stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  margin-top: 34px;
  align-items: start;
}

.page-faq .faq-rail {
  min-width: 0;
}

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--lc-muted);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  padding-bottom: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-rail__btn {
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
  gap: 3px;
  min-width: 118px;
  padding: 10px 13px;
  border: 1px solid var(--lc-line);
  border-radius: var(--lc-radius-sm);
  background: var(--lc-white);
  font: inherit;
  text-align: left;
  color: var(--lc-text);
  cursor: pointer;
  transition: border-color 0.18s var(--lc-ease), background-color 0.18s var(--lc-ease),
    color 0.18s var(--lc-ease), transform 0.18s var(--lc-ease);
}

.page-faq .faq-rail__name {
  font-size: 15px;
  font-weight: 600;
  color: var(--lc-ink);
  white-space: nowrap;
}

.page-faq .faq-rail__meta {
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--lc-muted);
  white-space: nowrap;
}

.page-faq .faq-rail__btn:hover {
  border-color: var(--lc-orange);
  transform: translateY(-2px);
}

.page-faq .faq-rail__btn[aria-pressed="true"] {
  border-color: var(--lc-orange);
  background: var(--lc-orange-soft);
}

.page-faq .faq-rail__btn[aria-pressed="true"] .faq-rail__name {
  color: var(--lc-orange-deep);
}

.page-faq .faq-rail__btn[aria-pressed="true"] .faq-rail__meta {
  color: var(--lc-orange-deep);
}

.page-faq .faq-rail__btn:focus-visible {
  outline: 2px solid var(--lc-orange);
  outline-offset: 2px;
}

.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-main__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--lc-line);
}

.page-faq .faq-main__count {
  margin: 0;
  font-size: 14px;
  color: var(--lc-muted);
}

.page-faq .faq-main__count [data-filter-count] {
  margin-right: 5px;
  font-family: var(--lc-font-mono);
  font-size: 19px;
  font-weight: 700;
  color: var(--lc-ink);
}

.page-faq .faq-main__hint {
  margin: 0;
  font-size: 13px;
  color: var(--lc-muted);
}

/* ---------- 配图 ---------- */
.page-faq .lc-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-shot {
  margin: 20px 0 4px;
  border: 1px solid var(--lc-line);
  border-radius: var(--lc-radius);
  overflow: hidden;
  background: var(--lc-white);
  box-shadow: var(--lc-shadow-1);
}

.page-faq .faq-shot .lc-figure__cap {
  padding: 9px 14px 11px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--lc-muted);
  border-top: 1px solid var(--lc-line);
}

.page-faq .lc-figure__cap {
  margin: 0;
}

/* ---------- 问答列表 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 18px;
}

.page-faq .faq-item {
  border: 1px solid var(--lc-line);
  border-radius: var(--lc-radius);
  background: var(--lc-white);
  box-shadow: var(--lc-shadow-1);
  transition: box-shadow 0.18s var(--lc-ease), transform 0.18s var(--lc-ease),
    border-color 0.18s var(--lc-ease);
}

.page-faq .faq-item[hidden] {
  display: none;
}

@media (hover: hover) {
  .page-faq .faq-item:hover {
    transform: translateY(-2px);
    border-color: #c8d2dd;
    box-shadow: var(--lc-shadow-2);
  }
}

.page-faq .faq-item > details > summary {
  list-style: none;
  cursor: pointer;
}

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

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 4px 12px;
  align-items: start;
  padding: 15px 16px;
  transition: background-color 0.18s var(--lc-ease);
}

.page-faq .faq-item__q:hover {
  background: #fbfcfd;
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--lc-orange);
  outline-offset: -2px;
}

.page-faq .faq-item__num {
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--lc-muted);
}

.page-faq .faq-item__label {
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--lc-ink);
}

.page-faq .faq-item__chev {
  width: 9px;
  height: 9px;
  margin-top: 7px;
  border-right: 2px solid var(--lc-muted);
  border-bottom: 2px solid var(--lc-muted);
  transform: rotate(45deg);
  transition: transform 0.18s var(--lc-ease), border-color 0.18s var(--lc-ease);
}

.page-faq .faq-item details[open] .faq-item__chev {
  transform: rotate(-135deg);
  border-color: var(--lc-orange);
}

.page-faq .faq-item__a {
  margin: 0 12px 12px;
  padding: 13px 15px;
  border-left: 3px solid var(--lc-line);
  border-radius: 8px;
  background: var(--lc-bg);
}

.page-faq .faq-item__a p {
  margin: 0 0 8px;
  font-size: 14.5px;
  line-height: 1.75;
}

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

.page-faq .faq-item__a a {
  color: var(--lc-orange-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  color: var(--lc-orange);
}

.page-faq .faq-item--entry .faq-item__num,
.page-faq .faq-item--entry .faq-item__a {
  border-left-color: var(--lc-teal);
}

.page-faq .faq-item--entry .faq-item__num {
  color: var(--lc-teal);
}

.page-faq .faq-item--version .faq-item__num {
  color: var(--lc-ink-2);
}

.page-faq .faq-item--version .faq-item__a {
  border-left-color: var(--lc-ink-2);
}

.page-faq .faq-item--rights .faq-item__num {
  color: var(--lc-orange-deep);
}

.page-faq .faq-item--rights .faq-item__a {
  border-left-color: var(--lc-orange);
}

.page-faq .faq-item--download .faq-item__num {
  color: var(--lc-warn);
}

.page-faq .faq-item--download .faq-item__a {
  border-left-color: var(--lc-warn);
}

/* ---------- 三步自查 ---------- */
.page-faq .faq-steps {
  margin-top: 56px;
  padding: 30px 20px;
  border-radius: 14px;
  background: var(--lc-ink);
  color: #e8edf3;
}

.page-faq .faq-steps__eyebrow {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--lc-orange);
}

.page-faq .faq-steps__title {
  margin: 0 0 10px;
  font-size: 22px;
  line-height: 1.35;
  font-weight: 800;
  color: var(--lc-white);
}

.page-faq .faq-steps__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: #b9c6d5;
}

.page-faq .faq-steps__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  padding-top: 16px;
  border-top: 2px solid var(--lc-ink-2);
}

.page-faq .faq-step__num {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--lc-orange);
}

.page-faq .faq-step__title {
  margin: 8px 0 6px;
  font-size: 16.5px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--lc-white);
}

.page-faq .faq-step__body {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: #becbda;
}

.page-faq .faq-steps__figure {
  margin: 28px 0 0;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 10px;
  overflow: hidden;
}

.page-faq .faq-steps__figure .lc-figure__cap {
  padding: 9px 14px 11px;
  font-size: 12.5px;
  line-height: 1.6;
  color: #a9b8c9;
  background: rgba(255, 255, 255, 0.04);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ---------- 底部行动区 ---------- */
.page-faq .faq-cta {
  margin-top: 44px;
  padding: 24px 20px;
  border: 1px solid var(--lc-line);
  border-left: 4px solid var(--lc-orange);
  border-radius: var(--lc-radius);
  background: var(--lc-white);
  box-shadow: var(--lc-shadow-1);
}

.page-faq .faq-cta__title {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--lc-ink);
}

.page-faq .faq-cta__text {
  margin: 0 0 18px;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-cta__actions .lc-copy {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  text-decoration: none;
}

.page-faq .faq-cta__actions .lc-copy__value {
  font-family: var(--lc-font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.page-faq .faq-cta__actions .lc-copy__hint {
  font-size: 12px;
  opacity: 0.82;
}

.page-faq .faq-cta__more {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--lc-muted);
}

.page-faq .faq-cta__more a {
  color: var(--lc-orange-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-faq {
    padding-top: 34px;
  }

  .page-faq .faq-top h1 {
    font-size: 32px;
  }

  .page-faq .faq-stage {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 46px;
    margin-top: 44px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--lc-bar-h) + 20px);
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 8px;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-rail__btn {
    width: 100%;
    min-width: 0;
    border-left-width: 3px;
  }

  .page-faq .faq-rail__btn[aria-pressed="true"] {
    border-left-color: var(--lc-orange);
  }

  .page-faq .faq-main__bar {
    padding-bottom: 14px;
  }

  .page-faq .faq-item__q {
    gap: 4px 16px;
    padding: 16px 18px;
  }

  .page-faq .faq-item__label {
    font-size: 16.5px;
  }

  .page-faq .faq-item__a {
    margin: 0 18px 16px;
    padding: 15px 18px 15px 20px;
  }

  .page-faq .faq-item__a p {
    font-size: 15px;
  }

  .page-faq .faq-steps {
    margin-top: 68px;
    padding: 40px 36px;
  }

  .page-faq .faq-steps__title {
    font-size: 26px;
  }

  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
    margin-top: 30px;
  }

  .page-faq .faq-cta {
    margin-top: 56px;
    padding: 30px 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-rail__btn,
  .page-faq .faq-item__chev {
    transition: none;
  }

  .page-faq .faq-item:hover,
  .page-faq .faq-rail__btn:hover {
    transform: none;
  }
}