.page-faq {
  --faq-line: var(--hair);
  --faq-panel-bg: var(--ledger);
  --faq-band: var(--orange-600);
  background: var(--paper);
  color: var(--graphite);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  background: var(--indigo-900);
  color: var(--paper);
  padding: 2rem 0 2.75rem;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.page-faq .faq-hero__eyebrow {
  color: var(--orange-300);
  letter-spacing: .14em;
  margin: 0 0 .9rem;
}

.page-faq .faq-hero__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-stretch: condensed;
  letter-spacing: -.01em;
  font-size: clamp(1.85rem, 6.2vw, 3.1rem);
  line-height: 1.22;
  margin: 0 0 1.1rem;
  color: var(--paper);
  max-width: 20ch;
}

.page-faq .faq-hero__lede {
  font-family: var(--font-body);
  font-size: 1.02rem;
  line-height: 1.85;
  color: rgba(252, 249, 244, .82);
  max-width: 56ch;
  margin: 0;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2.25rem;
  margin: 1.9rem 0 0;
  padding-top: 1.35rem;
  border-top: 1px solid rgba(252, 249, 244, .16);
}

.page-faq .faq-hero__stat {
  min-width: 7.5rem;
}

.page-faq .faq-hero__stat-label {
  font-family: var(--font-head);
  font-size: .78rem;
  letter-spacing: .08em;
  color: rgba(252, 249, 244, .6);
  margin: 0 0 .3rem;
}

.page-faq .faq-hero__stat-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--paper);
  margin: 0;
  line-height: 1.2;
}

.page-faq .faq-hero__stat-value--key {
  color: var(--orange-300);
}

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

.page-faq .faq-hero__figure .figure__frame {
  border: 1px solid rgba(252, 249, 244, .22);
  background: var(--indigo-700);
  overflow: hidden;
}

/* ---------- 移动端索引签条 ---------- */
.page-faq .faq-index {
  background: var(--faq-panel-bg);
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
  padding: .85rem 0;
}

.page-faq .faq-index__track {
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: .15rem 0;
}

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

.page-faq .faq-index__item {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: .45rem;
  padding: .5rem .85rem;
  background: var(--paper);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .92rem;
  color: var(--indigo-900);
  text-decoration: none;
  white-space: nowrap;
  transition: background 160ms var(--ease), border-color 160ms var(--ease), color 160ms var(--ease);
}

.page-faq .faq-index__item:hover,
.page-faq .faq-index__item:focus-visible {
  background: var(--celadon-200);
  border-color: var(--celadon-600);
  color: var(--indigo-900);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--indigo-500);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  padding-top: 2.25rem;
  padding-bottom: 3.5rem;
}

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

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

/* ---------- 问答组 ---------- */
.page-faq .faq-group {
  padding-top: 2.25rem;
  margin-top: 2.25rem;
  border-top: 1px solid var(--faq-line);
  scroll-margin-top: 5.5rem;
}

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

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .9rem;
  align-items: start;
  margin-bottom: 1.15rem;
}

.page-faq .faq-group__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .06em;
  color: var(--paper);
  background: var(--indigo-700);
  padding: .22rem .45rem;
  border-radius: var(--radius);
  line-height: 1.3;
  margin-top: .2rem;
}

.page-faq .faq-group__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-stretch: condensed;
  letter-spacing: -.01em;
  font-size: clamp(1.4rem, 4vw, 1.95rem);
  line-height: 1.3;
  color: var(--indigo-900);
  margin: 0;
}

.page-faq .faq-group__note {
  font-family: var(--font-body);
  font-size: .95rem;
  line-height: 1.75;
  color: var(--graphite);
  margin: .4rem 0 0;
  max-width: 62ch;
}

.page-faq .faq-group__extra {
  margin-top: 1.5rem;
}

.page-faq .faq-table-caption {
  text-align: left;
  font-family: var(--font-head);
  font-size: .82rem;
  letter-spacing: .06em;
  color: var(--indigo-500);
  padding-bottom: .55rem;
}

/* ---------- 手风琴 ---------- */
.page-faq .accordion {
  border-top: 1px solid var(--faq-line);
}

.page-faq .accordion__item {
  position: relative;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .accordion__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--faq-band);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 180ms var(--ease);
}

.page-faq .accordion__item:has([aria-expanded="true"])::before {
  transform: scaleY(1);
}

.page-faq .accordion__heading {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .accordion__trigger {
  width: 100%;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .95rem .25rem .95rem 1.1rem;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.03rem;
  line-height: 1.5;
  color: var(--indigo-900);
  transition: color 160ms var(--ease);
}

.page-faq .accordion__trigger:hover {
  color: var(--indigo-500);
}

.page-faq .accordion__trigger:focus-visible {
  outline: 2px solid var(--indigo-500);
  outline-offset: -2px;
}

.page-faq .accordion__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .accordion__icon {
  flex: 0 0 auto;
  position: relative;
  width: 18px;
  height: 18px;
}

.page-faq .accordion__icon::before,
.page-faq .accordion__icon::after {
  content: "";
  position: absolute;
  background: var(--indigo-500);
  transition: transform 180ms var(--ease), opacity 180ms var(--ease);
}

.page-faq .accordion__icon::before {
  left: 0;
  right: 0;
  top: 8px;
  height: 1.5px;
}

.page-faq .accordion__icon::after {
  top: 0;
  bottom: 0;
  left: 8px;
  width: 1.5px;
}

.page-faq .accordion__item:has([aria-expanded="true"]) .accordion__icon::after {
  transform: scaleY(0);
}

.page-faq .accordion__panel {
  overflow: hidden;
}

.page-faq .accordion__panel-inner {
  padding: .35rem 1.15rem 1.35rem 1.1rem;
  background: var(--faq-panel-bg);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--graphite);
}

.page-faq .accordion__panel-inner p {
  margin: 0 0 .9em;
  max-width: 68ch;
}

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

.page-faq .accordion__panel-inner a {
  color: var(--indigo-500);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--orange-300);
}

.page-faq .accordion__panel-inner a:hover {
  color: var(--orange-600);
}

/* ---------- 插图 ---------- */
.page-faq .figure {
  margin: 0;
}

.page-faq .figure__frame {
  border: 1px solid var(--faq-line);
  background: var(--faq-panel-bg);
  overflow: hidden;
}

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

.page-faq .figure__caption {
  font-family: var(--font-body);
  font-size: .82rem;
  line-height: 1.7;
  color: var(--graphite);
  margin-top: .6rem;
  padding-left: .1rem;
}

.page-faq .faq-inline-figure {
  max-width: 26rem;
  margin-top: 1.75rem;
}

.page-faq .faq-inline-figure .figure__frame {
  max-width: 20rem;
}

/* ---------- 桌面端锚点栏 ---------- */
.page-faq .faq-rail__title {
  font-family: var(--font-head);
  font-size: .76rem;
  letter-spacing: .16em;
  font-weight: 700;
  color: var(--indigo-500);
  margin: 0 0 .85rem;
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: .55rem;
  padding: .7rem .3rem .7rem 0;
  border-bottom: 1px solid var(--faq-line);
  text-decoration: none;
  font-family: var(--font-head);
  font-size: .92rem;
  font-weight: 600;
  color: var(--graphite);
  transition: color 160ms var(--ease), padding-left 160ms var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--orange-600);
  padding-left: .3rem;
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: .76rem;
  color: var(--indigo-500);
}

/* ---------- 断点 ---------- */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 2.75rem 0 3.25rem;
  }

  .page-faq .accordion__panel-inner {
    padding: .5rem 1.5rem 1.5rem 1.6rem;
  }

  .page-faq .accordion__trigger {
    padding-left: 1.6rem;
  }

  .page-faq .faq-inline-figure {
    max-width: none;
    display: grid;
    grid-template-columns: 20rem 1fr;
    gap: 1.25rem;
    align-items: start;
    margin-top: 1.9rem;
  }

  .page-faq .faq-inline-figure .figure__caption {
    margin-top: 0;
    padding-top: .35rem;
    max-width: 34ch;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.12fr .88fr;
    gap: 3rem;
  }

  .page-faq .faq-hero__title {
    font-size: clamp(2.1rem, 3.6vw, 3.1rem);
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-index {
    display: none;
  }

  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 13rem;
    gap: 3.5rem;
    align-items: start;
    padding-top: 3.25rem;
    padding-bottom: 4.5rem;
  }

  .page-faq .faq-rail {
    display: block;
    position: sticky;
    top: 6.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .accordion__item::before,
  .page-faq .accordion__icon::before,
  .page-faq .accordion__icon::after,
  .page-faq .faq-index__item,
  .page-faq .faq-rail__link {
    transition: none;
  }
}