.page-faq {
  --faq-rail-w: 252px;
  --faq-indent: clamp(.85rem, 2vw, 1.5rem);
  background-color: var(--rice);
  min-width: 0;
}

.page-faq .breadcrumb {
  padding-top: clamp(1rem, 3vw, 1.75rem);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 4vw, 3.25rem);
  align-items: center;
}

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

.page-faq .faq-hero__text .lede {
  margin-top: 1rem;
  max-width: 40ch;
}

.page-faq .faq-stat {
  list-style: none;
  margin: 2rem 0 0;
  padding: 1.5rem 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.15rem 1.5rem;
}

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

.page-faq .faq-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  line-height: 1.25;
  letter-spacing: .02em;
  color: var(--cinnabar);
}

.page-faq .faq-stat__label {
  display: block;
  margin-top: .4rem;
  font-size: .875rem;
  line-height: 1.55;
  color: var(--ink-soft);
}

.page-faq .faq-hero__actions {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.page-faq .faq-hero__media {
  margin: 0;
  min-width: 0;
  border-radius: var(--radius);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 11 / 8;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-main {
  padding-top: clamp(2rem, 4vw, 3rem);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 3vw, 2.5rem);
}

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

.page-faq .faq-rail__label {
  margin: 0;
  font-size: .75rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--celadon);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: .75rem 0 0;
  padding: 0;
  display: grid;
  gap: .125rem;
}

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

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: .65rem;
  padding: .55rem .8rem;
  border-left: 2px solid transparent;
  color: var(--ink-soft);
  font-size: .9375rem;
  line-height: 1.5;
  text-decoration: none;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .faq-rail__link .mono {
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--cinnabar);
  border-left-color: var(--cinnabar);
  background-color: var(--paper);
}

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

/* 移动端索引变横滑条 */
@media (max-width: 999px) {
  .page-faq .faq-rail__list {
    display: flex;
    gap: .5rem;
    overflow-x: auto;
    padding-bottom: .5rem;
    -webkit-overflow-scrolling: touch;
  }

  .page-faq .faq-rail__item {
    flex: 0 0 auto;
  }

  .page-faq .faq-rail__link {
    white-space: nowrap;
    border-left: 0;
    border-bottom: 2px solid transparent;
    padding: .45rem .3rem;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    border-left-color: transparent;
    border-bottom-color: var(--cinnabar);
    background-color: transparent;
  }
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq [data-filter-hidden="true"] {
  display: none;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  margin-top: clamp(2.25rem, 5vw, 3.5rem);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .3rem 1rem;
  align-items: baseline;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-group__code {
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--cinnabar);
}

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

.page-faq .faq-group__note {
  grid-column: 1 / -1;
  margin: .35rem 0 0;
  max-width: 52ch;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-faq .faq-group__body {
  margin-top: .5rem;
}

.page-faq .faq-figure {
  margin: 1.25rem 0 1.5rem;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  background-color: transparent;
  transition: background-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .faq-item[open] {
  background-color: var(--paper);
  box-shadow: var(--shadow-soft);
  border-bottom-color: transparent;
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem var(--faq-indent);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q {
  font-family: var(--font-display);
  font-size: clamp(1.0625rem, 2vw, 1.1875rem);
  line-height: 1.55;
  color: var(--ink);
  transition: color .18s var(--ease);
}

.page-faq .faq-item__summary:hover .faq-item__q,
.page-faq .faq-item__summary:focus-visible .faq-item__q {
  color: var(--cinnabar);
}

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: .4rem;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background-color: var(--gold);
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 7.5px;
  width: 16px;
  height: 1px;
}

.page-faq .faq-item__mark::after {
  top: 0;
  left: 7.5px;
  width: 1px;
  height: 16px;
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: rotate(90deg);
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 0 var(--faq-indent) 1.5rem;
  max-width: 64ch;
}

.page-faq .faq-item__body p {
  margin: 0 0 .85rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

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

.page-faq .faq-item__more {
  margin-top: 1.1rem;
}

.page-faq .faq-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding-bottom: .12rem;
  border-bottom: 1px solid rgba(176, 42, 37, .32);
  color: var(--cinnabar);
  font-size: .875rem;
  text-decoration: none;
  transition: border-color .18s var(--ease);
}

.page-faq .faq-link::after {
  content: "\2192";
  font-family: var(--font-mono);
  transition: transform .18s var(--ease);
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  border-bottom-color: var(--cinnabar);
}

.page-faq .faq-link:hover::after,
.page-faq .faq-link:focus-visible::after {
  transform: translateX(3px);
}

/* ---------- 深色数据板 ---------- */
.page-faq .faq-plate {
  margin-top: 1.25rem;
  padding: clamp(1rem, 2.4vw, 1.5rem);
  background-color: var(--indigo);
  border-radius: var(--radius);
  overflow-x: auto;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 460px;
  border-collapse: collapse;
}

.page-faq .faq-table caption {
  caption-side: top;
  text-align: left;
  padding-bottom: .75rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  text-align: left;
  padding: .72rem .8rem;
  border-bottom: 1px solid var(--line-light);
  vertical-align: baseline;
}

.page-faq .faq-table th {
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--celadon);
}

.page-faq .faq-table td {
  font-size: .9375rem;
  color: var(--rice);
}

.page-faq .faq-table td:first-child {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  color: var(--rice);
}

.page-faq .faq-table td:nth-child(2) {
  font-family: var(--font-mono);
  font-size: .9375rem;
  letter-spacing: .02em;
  color: var(--gold-pale);
}

.page-faq .faq-table td:nth-child(3) {
  color: var(--indigo-pale);
  font-size: .875rem;
}

.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: end;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 4.5rem);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 6.5rem;
    align-self: start;
  }

  .page-faq .faq-group__title {
    font-size: clamp(1.5rem, 2.4vw, 1.9rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-link,
  .page-faq .faq-link::after,
  .page-faq .faq-rail__link {
    transition: none;
  }

  .page-faq .faq-link:hover::after,
  .page-faq .faq-link:focus-visible::after {
    transform: none;
  }
}
<<<END>>>