.page-faq {
  --faq-gap: clamp(20px, 3.4vw, 44px);
  padding-bottom: clamp(48px, 7vw, 96px);
  background:
    linear-gradient(180deg, rgba(13, 34, 51, .9) 0, rgba(7, 19, 31, 0) 460px),
    var(--ink-900);
}

.page-faq .crumbs {
  padding-top: clamp(16px, 2.4vw, 26px);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--slate);
}

.page-faq .crumbs a {
  color: var(--cyan-mist);
  text-decoration: none;
}

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

.page-faq .crumbs__sep {
  margin: 0 8px;
  color: var(--slate);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  padding: clamp(26px, 4.4vw, 62px) 0 clamp(30px, 4.6vw, 60px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 72px;
  height: 2px;
  background: var(--cyan);
}

.page-faq .faq-hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--slate);
}

.page-faq .faq-hero__eyebrow .num {
  color: var(--gold);
  letter-spacing: .12em;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(36px, 7vw, 84px);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--paper);
  text-wrap: balance;
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 48ch;
  font-size: clamp(14px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--cyan-mist);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

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

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line-strong);
  object-fit: cover;
}

.page-faq .faq-hero__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--slate);
}

/* ---------- 主布局 ---------- */

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 52px);
  padding-top: clamp(18px, 3vw, 36px);
}

.page-faq .faq-index {
  min-width: 0;
  border-top: 1px solid var(--line-strong);
  padding-top: 14px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-index__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--slate);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 2px;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--cyan-mist);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--line-strong);
}

.page-faq .faq-index__no {
  flex: none;
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-faq .faq-index__dot {
  flex: none;
  width: 6px;
  height: 6px;
  background: var(--mint);
}

.page-faq .faq-index__foot {
  margin: 16px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--slate);
}

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

/* ---------- 筛选 ---------- */

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

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: clamp(18px, 2.4vw, 26px);
}

.page-faq .faq-filter__btn {
  font-family: var(--font-body);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--cyan-mist);
  background: transparent;
  border: 1px solid var(--line-strong);
  padding: 7px 14px;
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-filter__btn:hover {
  border-color: var(--cyan);
  color: var(--paper);
}

.page-faq .faq-filter__btn.is-active,
.page-faq .faq-filter__btn[aria-pressed="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-900);
  font-weight: 600;
}

/* ---------- 分组 ---------- */

.page-faq .faq-group {
  border-top: 1px solid var(--line-strong);
  padding: clamp(20px, 2.8vw, 32px) 0 4px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-faq .faq-group__head .sec-index {
  flex: none;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-faq .faq-group__lead {
  margin: 8px 0 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-group__more {
  margin: 14px 0 6px;
  font-size: 13px;
}

.page-faq .faq-group__more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
}

.page-faq .faq-group__more a:hover,
.page-faq .faq-group__more a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 问题条目 ---------- */

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

.page-faq .qa[hidden] {
  display: none;
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 15px 0;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  line-height: 1.6;
  font-weight: 600;
  color: var(--paper);
  transition: color .2s var(--ease);
}

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

.page-faq .qa__q:hover {
  color: var(--cyan-mist);
}

.page-faq .qa__tag {
  flex: none;
  margin-top: 2px;
}

.page-faq .qa__text {
  flex: 1 1 auto;
  min-width: 0;
  overflow-wrap: anywhere;
}

.page-faq .qa__icon {
  flex: none;
  width: 11px;
  height: 11px;
  margin-top: 7px;
  background:
    linear-gradient(var(--cyan), var(--cyan)) center / 11px 1px no-repeat,
    linear-gradient(var(--cyan), var(--cyan)) center / 1px 11px no-repeat;
  transition: transform .24s var(--ease);
}

.page-faq .qa[open] .qa__q {
  color: var(--cyan);
}

.page-faq .qa[open] .qa__icon {
  transform: rotate(90deg);
}

.page-faq .qa__a {
  margin: 0 0 18px;
  padding: 2px 0 2px 14px;
  border-left: 2px solid var(--cyan);
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--cyan-mist);
}

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

.page-faq .qa__a .num {
  color: var(--paper);
  font-size: 13.5px;
  overflow-wrap: anywhere;
}

.page-faq .faq-shot {
  margin: 14px 0;
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--line-strong);
  object-fit: cover;
}

.page-faq .faq-shot figcaption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--slate);
}

/* ---------- 收尾 ---------- */

.page-faq .faq-more {
  margin-top: clamp(28px, 4vw, 48px);
  padding: clamp(20px, 3vw, 32px);
  background: var(--ink-700);
  border-left: 2px solid var(--gold);
}

.page-faq .faq-more__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-more__lead {
  margin: 10px 0 0;
  max-width: 54ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--cyan-mist);
}

.page-faq .faq-more__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-index__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 18px;
  }

  .page-faq .faq-hero__media {
    max-width: 640px;
  }
}

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

  .page-faq .faq-hero__media {
    max-width: none;
  }

  .page-faq .qa__q {
    font-size: 15.5px;
    padding: 17px 0;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(190px, 232px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

  .page-faq .faq-index__list {
    display: block;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__icon,
  .page-faq .qa__q,
  .page-faq .faq-filter__btn,
  .page-faq .faq-index__link {
    transition: none;
  }
}
<<<END>>>