.page-faq {
  --faq-gap: clamp(16px, 2.6vw, 24px);
  --faq-rail: 40px;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  padding-top: var(--s4);
}

.page-faq .crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s2);
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mute);
}

.page-faq .crumbs__item a {
  color: var(--cold);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.page-faq .crumbs__item a:hover,
.page-faq .crumbs__item a:focus-visible {
  color: var(--fluoro);
}

.page-faq .crumbs__sep {
  color: var(--mute);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(20px, 4vw, 48px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--s5);
}

.page-faq .faq-hero__lead {
  display: flex;
  flex-direction: column;
  gap: var(--s3);
  min-width: 0;
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(38px, 8.4vw, 104px);
  line-height: 0.98;
  letter-spacing: -.03em;
  color: var(--paper);
}

.page-faq .faq-hero__title span {
  display: block;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--amber);
}

.page-faq .faq-hero__lede {
  max-width: 64ch;
  margin: 0;
  color: var(--cold);
}

.page-faq .faq-hero__fig {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-hero__fig .media-frame__img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    align-items: end;
    gap: var(--s6);
  }
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
}

.page-faq .faq-index__tab {
  display: flex;
  flex-direction: column;
  gap: var(--s2);
  padding: var(--s3);
  background: var(--ink);
  color: var(--cold);
  text-decoration: none;
  min-width: 0;
  transition: background .18s var(--ease), color .18s var(--ease), box-shadow .18s var(--ease);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--fluoro-deep);
  transition: color .18s var(--ease);
}

.page-faq .faq-index__name {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .faq-index__hint {
  font-size: 12px;
  line-height: 1.6;
  color: var(--mute);
}

.page-faq .faq-index__tab:hover,
.page-faq .faq-index__tab:focus-visible {
  background: var(--board);
  outline: none;
}

.page-faq .faq-index__tab:hover .faq-index__num,
.page-faq .faq-index__tab:focus-visible .faq-index__num {
  color: var(--fluoro);
}

.page-faq .faq-index__tab[aria-current="true"] {
  background: var(--board-soft);
  box-shadow: inset 3px 0 0 var(--amber);
}

.page-faq .faq-index__tab[aria-current="true"] .faq-index__num {
  color: var(--amber);
}

@media (min-width: 880px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-index__tab {
    padding: var(--s4);
  }
}

/* ---------- 分组头 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--s2);
  padding-bottom: var(--s4);
  border-bottom: 1px solid var(--hair-strong);
  margin-bottom: var(--s4);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .2em;
  color: var(--fluoro-deep);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-group__note {
  margin: 0;
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--cold);
}

@media (min-width: 860px) {
  .page-faq .faq-group__head {
    grid-template-columns: 72px minmax(0, 1fr) minmax(0, 300px);
    align-items: baseline;
    column-gap: var(--s4);
  }

  .page-faq .faq-group__num {
    grid-column: 1;
    grid-row: 1;
  }

  .page-faq .faq-group__title {
    grid-column: 2;
    grid-row: 1;
  }

  .page-faq .faq-group__note {
    grid-column: 3;
    grid-row: 1;
  }
}

/* ---------- 问答列表 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--hair);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--hair);
  background: transparent;
}

.page-faq .faq-item__trigger {
  display: grid;
  grid-template-columns: var(--faq-rail) minmax(0, 1fr) 20px;
  align-items: start;
  gap: var(--s3);
  width: 100%;
  padding: var(--s4) 0;
  margin: 0;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: var(--paper);
  font-family: inherit;
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--fluoro-deep);
  padding-top: 5px;
  transition: color .18s var(--ease);
}

.page-faq .faq-item__q {
  font-size: clamp(16px, 2.2vw, 19px);
  font-weight: 500;
  line-height: 1.55;
  transition: color .18s var(--ease);
}

.page-faq .faq-item__trigger:hover .faq-item__q,
.page-faq .faq-item__trigger:focus-visible .faq-item__q,
.page-faq .faq-item__trigger:hover .faq-item__num,
.page-faq .faq-item__trigger:focus-visible .faq-item__num {
  color: var(--fluoro);
}

.page-faq .faq-item__trigger:focus-visible {
  outline: 1px solid var(--fluoro);
  outline-offset: 4px;
}

.page-faq .faq-item .fold__mark {
  position: relative;
  display: block;
  width: 14px;
  height: 14px;
  justify-self: end;
  margin-top: 6px;
  transition: transform .18s var(--ease);
}

.page-faq .faq-item .fold__mark::before,
.page-faq .faq-item .fold__mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: var(--cold);
  transition: background .18s var(--ease);
}

.page-faq .faq-item .fold__mark::after {
  transform: rotate(90deg);
}

.page-faq .faq-item__trigger:hover .fold__mark::before,
.page-faq .faq-item__trigger:hover .fold__mark::after {
  background: var(--amber);
}

.page-faq .faq-item__trigger[aria-expanded="true"] .fold__mark {
  transform: rotate(45deg);
}

.page-faq .faq-item__trigger[aria-expanded="true"] .fold__mark::before,
.page-faq .faq-item__trigger[aria-expanded="true"] .fold__mark::after {
  background: var(--fluoro);
}

.page-faq .faq-item .fold__panel,
.page-faq .faq-item .fold__body {
  padding: 0;
}

.page-faq .faq-item__body {
  padding-bottom: var(--s4);
  max-width: 78ch;
}

.page-faq .faq-item__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--cold);
}

.page-faq .faq-item__body p + p {
  margin-top: var(--s2);
}

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

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

@media (min-width: 640px) {
  .page-faq .faq-item__body {
    padding-left: calc(var(--faq-rail) + var(--s3));
  }
}

/* ---------- 刷新节拍 ---------- */
.page-faq .faq-refresh-fig {
  margin: 0 0 var(--s4);
}

.page-faq .faq-refresh-fig .media-frame__img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-beat {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
  margin-bottom: var(--s5);
}

.page-faq .faq-beat__item {
  display: grid;
  gap: var(--s2);
  padding: var(--s4);
  background: var(--board);
}

.page-faq .faq-beat__name {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--cold);
}

.page-faq .faq-beat__value {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1;
  color: var(--fluoro);
}

.page-faq .faq-beat__value span {
  margin-left: 6px;
  font-size: 13px;
  font-weight: 400;
  letter-spacing: .06em;
  color: var(--cold);
}

.page-faq .faq-beat__track {
  height: 10px;
  background-image: radial-gradient(circle, var(--fluoro) 1px, transparent 1.6px);
  background-size: 12px 10px;
  background-repeat: repeat-x;
  background-position: left center;
  opacity: .55;
}

.page-faq .faq-beat__item--slow .faq-beat__value {
  color: var(--amber);
}

.page-faq .faq-beat__item--slow .faq-beat__track {
  background-image: radial-gradient(circle, var(--amber) 1px, transparent 1.6px);
  background-size: 32px 10px;
}

@media (min-width: 720px) {
  .page-faq .faq-beat {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 人工协助 ---------- */
.page-faq .faq-help {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--hair-strong);
  border: 1px solid var(--hair-strong);
}

.page-faq .faq-help__main {
  display: grid;
  gap: var(--s3);
  align-content: start;
  padding: clamp(24px, 4vw, 48px);
  background: var(--board);
}

.page-faq .faq-help__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-help__main p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--cold);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
  margin-top: var(--s2);
}

.page-faq .faq-help__contact {
  display: grid;
  gap: var(--s3);
  align-content: start;
  margin: 0;
  padding: clamp(24px, 4vw, 48px);
  background: var(--ink);
}

.page-faq .faq-help__row {
  display: grid;
  gap: 4px;
  padding-bottom: var(--s3);
  border-bottom: 1px solid var(--hair);
}

.page-faq .faq-help__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-help__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--mute);
}

.page-faq .faq-help__val {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--paper);
  overflow-wrap: anywhere;
}

@media (min-width: 880px) {
  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__tab,
  .page-faq .faq-item__q,
  .page-faq .faq-item__num,
  .page-faq .faq-item .fold__mark,
  .page-faq .faq-item .fold__mark::before,
  .page-faq .faq-item .fold__mark::after {
    transition: none;
  }
}
<<<END>>>