.page-faq {
  --faq-rail: 232px;
  --faq-sticky: 88px;
  color: var(--paper-100);
}

.page-faq .faq-crumbs {
  padding-top: clamp(16px, 2.4vw, 28px);
}

.page-faq .faq-body__title {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-faq .faq-hero__copy .eyebrow {
  margin: 0;
}

.page-faq .faq-hero__copy .display {
  margin: 16px 0 0;
}

.page-faq .faq-hero__copy .lede {
  margin: 22px 0 0;
  max-width: 44ch;
}

.page-faq .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line-strong);
  border-left: 1px solid var(--line);
  align-self: start;
}

.page-faq .hero-stats__item {
  padding: 16px 14px 18px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .hero-stats__num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--cy-400);
}

.page-faq .hero-stats__label {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--slate-400);
}

.page-faq .faq-hero__figure {
  margin: clamp(28px, 4vw, 46px) 0 0;
}

@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: end;
  }
}

/* ---------- 主体骨架 ---------- */

.page-faq .faq-layout {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
}

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

/* ---------- 分组索引 ---------- */

.page-faq .faq-rail__head {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate-400);
}

.page-faq .faq-rail__list {
  list-style: none;
  display: flex;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0 0 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail__list > li {
  flex: none;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--paper-100);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  white-space: nowrap;
  transition: border-color 160ms ease, color 160ms ease;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--line-strong);
  color: var(--cy-400);
}

.page-faq .faq-rail__num {
  color: var(--cy-400);
  font-size: 11px;
}

.page-faq .faq-rail__count {
  color: var(--slate-400);
  font-size: 11px;
}

.page-faq .faq-rail__foot {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--slate-400);
  max-width: 34ch;
}

.page-faq .faq-rail__foot a {
  color: var(--cy-400);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 84px);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .faq-rail__list {
    display: grid;
    overflow: visible;
    margin-top: 16px;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__list > li {
    flex: initial;
    border-bottom: 1px solid var(--line);
  }

  .page-faq .faq-rail__link {
    position: relative;
    padding: 12px 0 12px 14px;
    border: 0;
  }

  .page-faq .faq-rail__link::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: transparent;
    transition: background-color 160ms ease;
  }

  .page-faq .faq-rail__link:hover::before,
  .page-faq .faq-rail__link:focus-visible::before,
  .page-faq .faq-rail__link.is-current::before {
    background: var(--cy-400);
  }

  .page-faq .faq-rail__link.is-current {
    color: var(--cy-400);
  }

  .page-faq .faq-rail__count {
    margin-left: auto;
  }
}

/* ---------- 分组标题 ---------- */

.page-faq .faq-group {
  scroll-margin-top: 96px;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cy-400);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(21px, 2.6vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-faq .faq-group__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--slate-400);
}

.page-faq .faq-group__intro {
  margin: 16px 0 24px;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate-400);
}

.page-faq .faq-group__intro a {
  color: var(--cy-400);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

/* ---------- 展开组 ---------- */

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

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

.page-faq .faq-q {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
}

.page-faq .accordion__trigger {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 16px;
  align-items: start;
  gap: 12px;
  width: 100%;
  padding: 18px 0;
  background: none;
  border: 0;
  color: inherit;
  font-family: inherit;
  font-size: inherit;
  line-height: 1.65;
  text-align: left;
  cursor: pointer;
}

.page-faq .accordion__trigger:focus-visible {
  outline: 2px solid var(--cy-400);
  outline-offset: 3px;
}

.page-faq .faq-q__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  line-height: 1.9;
  color: var(--slate-400);
  transition: color 160ms ease;
}

.page-faq .accordion__item.is-open .faq-q__num {
  color: var(--ember-500);
}

.page-faq .faq-q__text {
  display: block;
  text-wrap: pretty;
}

.page-faq .accordion__sign {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 5px;
  justify-self: end;
}

.page-faq .accordion__sign::before,
.page-faq .accordion__sign::after {
  content: "";
  position: absolute;
  background: var(--cy-400);
  transition: transform 160ms ease, opacity 160ms ease;
}

.page-faq .accordion__sign::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 1px;
}

.page-faq .accordion__sign::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 1px;
}

.page-faq .accordion__item.is-open .accordion__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .accordion__item.is-open .accordion__panel {
  border-left: 1px solid var(--cy-400);
  padding-left: 14px;
}

.page-faq .accordion__body {
  padding: 2px 0 26px;
}

/* ---------- 步骤 ---------- */

.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .steps__item {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .steps__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  line-height: 1.95;
  color: var(--cy-600);
}

.page-faq .steps__item a {
  color: var(--cy-400);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-result {
  margin: 18px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate-400);
}

.page-faq .faq-result__label {
  display: inline-block;
  margin-right: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cy-400);
}

.page-faq .faq-device {
  margin: 20px 0 4px;
  max-width: 460px;
}

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

/* ---------- 分隔说明 ---------- */

.page-faq .faq-divider {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin: clamp(40px, 6vw, 64px) 0;
  max-width: 52ch;
  font-size: 13px;
  line-height: 1.8;
  color: var(--slate-400);
}

.page-faq .faq-divider::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  background: var(--cy-600);
}

/* ---------- 下一步 ---------- */

.page-faq .faq-next {
  margin-top: clamp(56px, 8vw, 96px);
}

.page-faq .faq-next__box {
  background: var(--ds-850);
  border: 1px solid var(--line);
  border-top: 2px solid var(--cy-400);
  padding: clamp(24px, 4vw, 44px);
}

.page-faq .faq-next__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cy-400);
}

.page-faq .faq-next__title {
  margin: 14px 0 0;
  font-size: clamp(21px, 2.8vw, 28px);
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.page-faq .faq-next__lede {
  margin: 14px 0 0;
  max-width: 50ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate-400);
}

.page-faq .faq-need {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-need__item {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 10px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .faq-need__item::before {
  content: "";
  width: 7px;
  height: 7px;
  margin-top: 10px;
  border: 1px solid var(--cy-400);
}

.page-faq .faq-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

@media (min-width: 768px) {
  .page-faq .faq-need {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 32px;
  }
}

/* ---------- 更新记录 ---------- */

.page-faq .faq-log-wrap {
  margin-top: clamp(48px, 7vw, 84px);
  scroll-margin-top: 96px;
}

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

.page-faq .faq-log__row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-log__ver {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cy-400);
}

.page-faq .faq-log__desc {
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .faq-log__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--slate-400);
}

@media (min-width: 768px) {
  .page-faq .faq-log__row {
    grid-template-columns: 72px minmax(0, 1fr) auto;
    gap: 24px;
    align-items: baseline;
  }

  .page-faq .faq-log__tag {
    justify-self: end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__link,
  .page-faq .faq-rail__link::before,
  .page-faq .faq-q__num,
  .page-faq .accordion__sign::before,
  .page-faq .accordion__sign::after {
    transition: none;
  }
}
<<<END>>>