.page-faq {
  --faq-panel: rgba(11, 20, 32, .74);
  --faq-panel-solid: #0B1420;
  --faq-line: rgba(27, 40, 55, .8);
  --faq-cyan-line: rgba(20, 224, 198, .42);
  --faq-radius: 14px;
  --faq-shell-rail: 236px;
  padding-bottom: 96px;
  position: relative;
}

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

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  padding: 96px 0 14px;
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--ink-mute);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.page-faq .breadcrumbs__link {
  color: var(--ink-mute);
  text-decoration: none;
  transition: color .18s var(--ease);
}
.page-faq .breadcrumbs__link:hover,
.page-faq .breadcrumbs__link:focus-visible {
  color: var(--cyan);
}
.page-faq .breadcrumbs__sep {
  color: var(--line);
}
.page-faq .breadcrumbs__current {
  color: var(--ink);
  font-weight: 500;
}

/* ---------- 页头 ---------- */
.page-faq .page-head {
  position: relative;
  padding-bottom: 8px;
}
.page-faq .page-head__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding: 12px 0 34px;
}

.page-faq .page-head__kicker {
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 18px;
}

.page-faq .page-head__title {
  font-family: var(--font-display);
  font-size: 30px;
  line-height: 1.24;
  letter-spacing: -.02em;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 18px;
  max-width: 18ch;
}
.page-faq .page-head__title::after {
  content: "";
  display: block;
  width: 56px;
  height: 2px;
  margin-top: 20px;
  background: var(--grad-cyan);
  border-radius: 2px;
}

.page-faq .page-head__lead {
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink-mute);
  margin: 0 0 22px;
  max-width: 60ch;
}

.page-faq .page-head__tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* 筛选 + 元信息面板 */
.page-faq .page-head__panel {
  position: relative;
  background: var(--faq-panel);
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  padding: 20px;
  box-shadow: 0 22px 44px -32px rgba(0, 0, 0, .9);
}
.page-faq .page-head__panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 18px;
  right: 18px;
  height: 2px;
  background: var(--grad-cyan);
  border-radius: 2px;
  opacity: .9;
}

.page-faq .faq-filter {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  min-height: 44px;
  border: 1px solid var(--faq-line);
  border-radius: 10px;
  background: rgba(6, 11, 20, .74);
  transition: border-color .18s var(--ease), background .18s var(--ease);
}
.page-faq .faq-filter:focus-within {
  border-color: var(--faq-cyan-line);
  background: rgba(6, 11, 20, .92);
}
.page-faq .faq-filter__icon {
  color: var(--cyan);
  display: inline-flex;
  flex: 0 0 auto;
}
.page-faq .faq-filter__input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  letter-spacing: .01em;
  outline: none;
  padding: 0;
}
.page-faq .faq-filter__input::placeholder {
  color: var(--ink-mute);
  opacity: .82;
}

.page-faq .faq-filter__hints {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.page-faq .faq-filter__hints li {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 10px;
}

.page-faq .faq-meta {
  margin: 20px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--faq-line);
  display: grid;
  gap: 10px;
}
.page-faq .faq-meta__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.page-faq .faq-meta dt {
  font-size: 13px;
  color: var(--ink-mute);
  letter-spacing: .02em;
}
.page-faq .faq-meta dd {
  margin: 0;
  font-size: 13px;
  color: var(--ink);
}

/* 页头通栏图 */
.page-faq .page-head__figure {
  position: relative;
  margin: 26px 0 0;
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
  overflow: hidden;
  background: var(--bg-deep);
}
.page-faq .page-head__figure .media__img {
  aspect-ratio: 12 / 7;
  filter: saturate(.86) contrast(1.04);
  opacity: .82;
}
.page-faq .page-head__figure-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(6, 11, 20, .96) 0%, rgba(6, 11, 20, .38) 46%, rgba(6, 11, 20, .96) 100%),
    linear-gradient(180deg, rgba(6, 11, 20, .5) 0%, rgba(6, 11, 20, .9) 100%);
  pointer-events: none;
}

/* ---------- FAQ 主体骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding-top: 44px;
}

/* 左侧分组索引 */
.page-faq .faq-rail {
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
  padding: 18px 0;
}
.page-faq .faq-rail__title {
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 12px;
}
.page-faq .faq-rail__list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x mandatory;
}
.page-faq .faq-rail__list::-webkit-scrollbar {
  display: none;
}
.page-faq .faq-rail__list li {
  flex: 0 0 auto;
  scroll-snap-align: start;
}
.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 14px;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  color: var(--ink-mute);
  text-decoration: none;
  font-size: 13.5px;
  white-space: nowrap;
  background: rgba(11, 20, 32, .6);
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}
.page-faq .faq-rail__link .mono {
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--ink-mute);
  transition: color .18s var(--ease);
}
.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--ink);
  border-color: var(--faq-cyan-line);
}
.page-faq .faq-rail__link.is-active {
  color: var(--bg);
  background: var(--cyan);
  border-color: var(--cyan);
}
.page-faq .faq-rail__link.is-active .mono {
  color: rgba(6, 11, 20, .68);
}
.page-faq .faq-rail__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}
.page-faq .faq-rail__note {
  margin: 0;
  font-size: 13px;
  color: var(--ink-mute);
}
.page-faq .faq-rail__cta {
  color: var(--cyan);
  font-size: 13.5px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}
.page-faq .faq-rail__cta:hover,
.page-faq .faq-rail__cta:focus-visible {
  border-bottom-color: var(--cyan);
}

/* 分组区块 */
.page-faq .faq-main {
  display: grid;
  gap: 54px;
}

.page-faq .faq-group {
  scroll-margin-top: 110px;
  position: relative;
}
.page-faq .faq-group + .faq-group {
  padding-top: 46px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-group__head {
  position: relative;
  padding-left: 18px;
  border-left: 2px solid var(--line);
  margin-bottom: 24px;
}
.page-faq .faq-group__index {
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--orange);
  margin: 0 0 10px;
}
.page-faq .faq-group__title {
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1.3;
  letter-spacing: -.015em;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 10px;
}
.page-faq .faq-group__lead {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-mute);
  max-width: 56ch;
}

/* 手风琴 */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  background: var(--faq-panel);
  border: 1px solid var(--faq-line);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: inset 2px 0 0 var(--line);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
}
.page-faq .faq-item:hover {
  border-color: rgba(27, 40, 55, 1);
  background: rgba(11, 20, 32, .86);
}
.page-faq .faq-item[open] {
  border-color: var(--faq-cyan-line);
  background: rgba(11, 20, 32, .94);
  box-shadow: inset 2px 0 0 var(--cyan);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  min-height: 56px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  outline: none;
}
.page-faq .faq-q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
  border-radius: 12px;
}
.page-faq .faq-q__num {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ink-mute);
  transition: color .2s var(--ease);
}
.page-faq .faq-item[open] .faq-q__num {
  color: var(--cyan);
}
.page-faq .faq-q__text {
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--ink);
  font-weight: 500;
  letter-spacing: .005em;
}
.page-faq .faq-q__mark {
  position: relative;
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
}
.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  background: var(--ink-mute);
  transition: transform .22s var(--ease), background .22s var(--ease);
}
.page-faq .faq-q__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}
.page-faq .faq-q__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}
.page-faq .faq-item[open] .faq-q__mark::after {
  transform: scaleY(0);
}
.page-faq .faq-item[open] .faq-q__mark::before {
  background: var(--cyan);
}

.page-faq .faq-a {
  padding: 0 18px 20px 54px;
  border-top: 1px solid var(--faq-line);
  padding-top: 16px;
}
.page-faq .faq-a p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--ink-mute);
  max-width: 62ch;
}
.page-faq .faq-a strong {
  color: var(--ink);
  font-weight: 600;
}
.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(20, 224, 198, .35);
  transition: border-color .18s var(--ease), color .18s var(--ease);
}
.page-faq .faq-a a:hover,
.page-faq .faq-a a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* 章节配图 */
.page-faq .faq-figure {
  margin: 26px 0 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: center;
  padding: 20px;
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  background: linear-gradient(140deg, rgba(11, 20, 32, .92) 0%, rgba(6, 11, 20, .96) 100%);
}
.page-faq .faq-figure__media {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: var(--bg-deep);
}
.page-faq .faq-figure__media .media__img {
  aspect-ratio: 3 / 4;
  object-fit: cover;
  opacity: .86;
  filter: saturate(.84);
}
.page-faq .faq-figure__cap {
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--ink-mute);
  max-width: 46ch;
}
.page-faq .faq-figure__cap-index {
  display: block;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--amber);
  margin-bottom: 8px;
}

/* ---------- 收尾 ---------- */
.page-faq .faq-outro {
  display: grid;
  gap: 20px;
  padding: 28px 22px;
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  background:
    linear-gradient(135deg, rgba(20, 224, 198, .08) 0%, rgba(6, 11, 20, 0) 52%),
    rgba(11, 20, 32, .86);
  box-shadow: 0 26px 50px -40px rgba(0, 0, 0, .95);
}
.page-faq .faq-outro__title {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: -.012em;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 10px;
}
.page-faq .faq-outro__text p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-mute);
  max-width: 58ch;
}
.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-faq .faq-outro__actions .btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .page-head__title {
    font-size: 38px;
  }
  .page-faq .faq-group__title {
    font-size: 28px;
  }
  .page-faq .faq-a {
    padding-left: 62px;
  }
  .page-faq .faq-figure {
    grid-template-columns: 220px 1fr;
  }
  .page-faq .faq-outro {
    padding: 34px 30px;
  }
}

@media (min-width: 900px) {
  .page-faq .page-head {
    padding-bottom: 20px;
  }
  .page-faq .page-head__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(320px, .9fr);
    gap: 48px;
    padding: 20px 0 46px;
    align-items: start;
  }
  .page-faq .page-head__title {
    font-size: 48px;
    max-width: 15ch;
  }
  .page-faq .page-head__lead {
    font-size: 16.5px;
  }
  .page-faq .page-head__figure .media__img {
    aspect-ratio: 21 / 8;
  }

  .page-faq .faq-shell {
    grid-template-columns: var(--faq-shell-rail) minmax(0, 1fr);
    gap: 56px;
    padding-top: 60px;
  }
  .page-faq .faq-rail {
    position: sticky;
    top: 110px;
    align-self: start;
    border-bottom: 1px solid var(--faq-line);
  }
  .page-faq .faq-rail__list {
    flex-direction: column;
    overflow: visible;
    margin-bottom: 22px;
  }
  .page-faq .faq-rail__link {
    width: 100%;
    justify-content: flex-start;
    border-radius: 10px;
    background: transparent;
  }
  .page-faq .faq-rail__foot {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .page-faq .faq-main {
    gap: 64px;
  }
  .page-faq .faq-group__head {
    padding-left: 24px;
    margin-bottom: 28px;
  }
  .page-faq .faq-group__title {
    font-size: 32px;
  }
  .page-faq .faq-group__lead {
    font-size: 15px;
  }

  .page-faq .faq-q {
    padding: 18px 22px;
  }
  .page-faq .faq-q__text {
    font-size: 16.5px;
  }
  .page-faq .faq-a {
    padding-left: 70px;
    padding-right: 34px;
    padding-bottom: 22px;
  }
  .page-faq .faq-a p {
    font-size: 15px;
  }

  .page-faq .faq-figure {
    grid-template-columns: 260px 1fr;
    gap: 30px;
    padding: 26px;
  }
  .page-faq .faq-outro {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
    gap: 36px;
    padding: 40px 36px;
  }
  .page-faq .faq-outro__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1180px) {
  .page-faq .page-head__title {
    font-size: 54px;
  }
  .page-faq .faq-shell {
    --faq-shell-rail: 260px;
    gap: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
  }
}
<<<END>>>