.page-faq {
  --faq-rule: rgba(110, 106, 99, .30);
  --faq-rule-soft: rgba(110, 106, 99, .16);
  --faq-paper: rgba(255, 252, 246, .72);
  --faq-quiet: rgba(255, 252, 246, .78);
  background: var(--c-cream);
  color: var(--c-deep);
  padding-bottom: clamp(56px, 9vw, 104px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(26px, 5vw, 58px) 0 clamp(14px, 2.4vw, 24px);
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-hero__title {
  margin: 12px 0 18px;
  max-width: 17ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.6vw, 56px);
  line-height: 1.06;
  letter-spacing: -.02em;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 64ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--c-stone-ink);
}

.page-faq .faq-hero__lead a {
  color: var(--c-clay);
  text-decoration: none;
  border-bottom: 1px solid rgba(210, 64, 30, .38);
}

.page-faq .faq-hero__lead a:hover {
  border-bottom-color: var(--c-clay);
}

/* ---------- 顶部主题索引带 ---------- */
.page-faq .faq-index {
  display: flex;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 30px);
  padding-bottom: 20px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-index__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--faq-rule);
  border-radius: var(--radius-pill);
  background: var(--faq-paper);
  color: var(--c-deep);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: border-color .2s var(--ease-out), color .2s var(--ease-out);
}

.page-faq .faq-index__link .mono {
  color: var(--c-clay);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--c-clay);
  color: var(--c-clay);
}

/* ---------- 布局 ---------- */
.page-faq .faq-layout {
  display: block;
  padding-top: clamp(24px, 4vw, 44px);
}

.page-faq .faq-toc {
  display: none;
}

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

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-top: clamp(28px, 4.6vw, 52px);
  margin-top: clamp(30px, 5vw, 56px);
  border-top: 1px solid var(--faq-rule);
  scroll-margin-top: 84px;
}

.page-faq .faq-group:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
  padding-bottom: 16px;
}

.page-faq .faq-group__num {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--c-clay);
}

.page-faq .faq-group__title {
  margin: 0;
  padding-left: 13px;
  border-left: 3px solid var(--c-clay);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1.25;
  letter-spacing: -.01em;
}

.page-faq .faq-group__count {
  margin-left: auto;
  font-size: 12.5px;
  color: var(--c-stone);
  letter-spacing: .04em;
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  position: relative;
  margin: 4px 0 20px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--c-deep);
}

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

.page-faq .faq-figure figcaption {
  position: absolute;
  right: 0;
  bottom: 0;
  padding: 7px 14px;
  border-top-left-radius: var(--radius-sm);
  background: rgba(18, 19, 22, .82);
  color: var(--c-mist);
  font-size: 12.5px;
  line-height: 1.5;
}

/* ---------- 问答 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-rule-soft);
}

.page-faq .faq-item summary {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 17px 42px 17px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 500;
  line-height: 1.62;
  transition: transform .24s var(--ease-out), color .2s var(--ease-out);
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item summary::after {
  content: "";
  position: absolute;
  right: 10px;
  top: 50%;
  width: 9px;
  height: 9px;
  border-right: 1.6px solid var(--c-stone);
  border-bottom: 1.6px solid var(--c-stone);
  transform: translateY(-70%) rotate(45deg);
  transition: transform .28s var(--ease-out), border-color .2s var(--ease-out);
}

.page-faq .faq-item__qnum {
  flex: 0 0 auto;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--c-frost);
  transition: color .24s var(--ease-out);
}

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--c-clay);
}

.page-faq .faq-item summary:hover .faq-item__qnum {
  color: var(--c-terra);
}

.page-faq .faq-item[open] summary {
  color: var(--c-clay);
  transform: translateX(2px);
}

.page-faq .faq-item[open] .faq-item__qnum {
  color: var(--c-clay);
}

.page-faq .faq-item[open] summary::after {
  border-color: var(--c-clay);
  transform: translateY(-30%) rotate(-135deg);
}

.page-faq .faq-item__a {
  max-width: 68ch;
  padding: 0 42px 20px 32px;
  margin-left: 1px;
  border-left: 1px solid var(--faq-rule);
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-stone-ink);
}

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

.page-faq .faq-item__a a {
  color: var(--c-clay);
  text-decoration: none;
  border-bottom: 1px solid rgba(210, 64, 30, .35);
}

.page-faq .faq-item__a a:hover {
  border-bottom-color: var(--c-clay);
}

/* ---------- 数据说明条 ---------- */
.page-faq .faq-note {
  display: grid;
  margin-top: 26px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--c-deep);
  color: var(--c-mist);
}

.page-faq .faq-note__body {
  padding: clamp(22px, 3.4vw, 34px);
}

.page-faq .faq-note__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.4;
  color: var(--c-mist);
}

.page-faq .faq-note__text {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--faq-quiet);
}

.page-faq .faq-note__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 34px;
  margin: 20px 0 0;
}

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

.page-faq .faq-note__stat dt {
  font-size: 12.5px;
  letter-spacing: .04em;
  color: rgba(255, 252, 246, .58);
}

.page-faq .faq-note__stat dd {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--c-mist);
}

.page-faq .faq-note__stat dd b {
  display: inline-block;
  margin-right: 4px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 26px;
  line-height: 1;
  color: var(--c-turf);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-note__figure {
  margin: 0;
  min-height: 190px;
  background: var(--c-lava);
}

.page-faq .faq-note__figure img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 190px;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-toc {
    display: block;
    position: sticky;
    top: 34px;
    align-self: start;
  }

  .page-faq .faq-toc__title {
    margin: 0 0 12px;
    font-size: 12px;
    letter-spacing: .12em;
    color: var(--c-stone);
  }

  .page-faq .faq-toc__list {
    list-style: none;
    margin: 0;
    padding: 0;
    border-left: 1px solid var(--faq-rule);
  }

  .page-faq .faq-toc__link {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-left: -1px;
    padding: 10px 0 10px 16px;
    border-left: 2px solid transparent;
    color: var(--c-stone-ink);
    font-size: 14px;
    line-height: 1.5;
    text-decoration: none;
    transition: color .2s var(--ease-out), border-color .2s var(--ease-out);
  }

  .page-faq .faq-toc__link .mono {
    font-size: 12px;
    letter-spacing: .08em;
    color: var(--c-frost);
    transition: color .2s var(--ease-out);
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link:focus-visible {
    color: var(--c-clay);
    border-left-color: var(--c-clay);
  }

  .page-faq .faq-toc__link:hover .mono {
    color: var(--c-clay);
  }

  .page-faq .faq-toc__foot {
    margin: 20px 0 0;
    padding-left: 16px;
    font-size: 12.5px;
    line-height: 1.9;
    color: var(--c-stone);
  }

  .page-faq .faq-toc__foot .mono {
    color: var(--c-deep);
  }

  .page-faq .faq-note {
    grid-template-columns: 1.15fr .85fr;
  }

  .page-faq .faq-hero__lead {
    font-size: 17.5px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-figure {
    margin-bottom: 24px;
  }

  .page-faq .faq-item summary {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item summary,
  .page-faq .faq-item summary::after,
  .page-faq .faq-index__link,
  .page-faq .faq-toc__link {
    transition: none;
  }

  .page-faq .faq-item[open] summary {
    transform: none;
  }

  .page-faq .faq-item[open] summary::after {
    transform: translateY(-50%) rotate(-135deg);
  }
}