.page-faq {
  background: var(--void);
  color: var(--star);
  overflow-x: clip;
}

.page-faq a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 227, 208, 0.35);
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

/* ---------- 面包屑 ---------- */

.page-faq .faq-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: clamp(18px, 3.4vw, 34px);
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--haze);
}

.page-faq .faq-crumbs a {
  color: var(--haze);
  border-bottom-color: transparent;
}

.page-faq .faq-crumbs a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-crumbs span[aria-hidden="true"] {
  color: var(--node);
}

.page-faq .faq-crumbs span:last-child {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-top: clamp(28px, 5vw, 56px);
  padding-bottom: clamp(36px, 6vw, 72px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-faq .faq-hero__title h1 {
  margin: 14px 0 0;
  font-family: var(--f-display);
  font-size: clamp(30px, 5.4vw, 58px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.03em;
  color: var(--star);
  max-width: 15em;
}

.page-faq .faq-hero__title h1::after {
  content: "";
  display: block;
  width: 76px;
  height: 2px;
  margin-top: 22px;
  background: linear-gradient(90deg, var(--cyan), rgba(79, 227, 208, 0));
}

.page-faq .faq-hero__aside p {
  margin: 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--haze);
}

.page-faq .faq-facts {
  list-style: none;
  margin: 22px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--orbit);
  display: grid;
  gap: 10px;
}

.page-faq .faq-facts li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 14px;
  font-size: 14px;
  color: var(--haze);
}

.page-faq .faq-facts b {
  font-family: var(--f-mono);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--gold);
}

/* ---------- 双栏骨架 ---------- */

.page-faq .faq-body {
  display: grid;
  gap: 28px;
  padding-top: clamp(28px, 4.6vw, 52px);
  padding-bottom: clamp(48px, 8vw, 96px);
  border-top: 1px solid var(--orbit);
}

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

/* ---------- 分类刻度 ---------- */

.page-faq .faq-rail {
  min-width: 0;
  order: -1;
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  border: 1px solid var(--orbit);
  border-radius: 999px;
  background: var(--night);
  color: var(--haze);
  font-size: 13px;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--star);
  border-color: var(--cyan);
  background: var(--dust);
}

.page-faq .faq-rail__dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--node);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .faq-rail__link:hover .faq-rail__dot,
.page-faq .faq-rail__link:focus-visible .faq-rail__dot {
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(79, 227, 208, 0.16);
}

.page-faq .faq-rail__count {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--node);
}

.page-faq .faq-rail__hint {
  margin: 16px 0 0;
  max-width: 26em;
  font-size: 13px;
  line-height: 1.7;
  color: var(--haze);
}

/* ---------- 问题分组 ---------- */

.page-faq .faq-group {
  scroll-margin-top: calc(var(--head-h) + var(--strip-h) + 24px);
  padding-bottom: clamp(32px, 5vw, 56px);
}

.page-faq .faq-group + .faq-group {
  padding-top: clamp(32px, 5vw, 56px);
  border-top: 1px solid var(--orbit);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px 18px;
  align-items: start;
  margin-bottom: 20px;
}

.page-faq .faq-group__head h2 {
  margin: 0 0 8px;
  font-family: var(--f-display);
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.02em;
  color: var(--star);
}

.page-faq .faq-group__intro {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--haze);
}

/* ---------- 图 ---------- */

.page-faq .faq-figure {
  margin: 0 0 6px;
  border: 1px solid var(--orbit);
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(155deg, var(--night), var(--void) 70%);
}

.page-faq .faq-figure--inset {
  margin: 24px 0;
}

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

/* ---------- 问答条目 ---------- */

.page-faq .faq-list {
  margin-top: 24px;
  border-top: 1px solid var(--orbit);
}

.page-faq .faq-list--cont {
  margin-top: 0;
  border-top: 0;
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 17px 0;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  line-height: 1.62;
  color: var(--star);
  transition: color 0.2s ease;
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-faq .faq-item__mark {
  flex: none;
  width: 0;
  height: 0;
  margin-top: 8px;
  border-left: 7px solid var(--node);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  transition: transform 0.25s ease, border-left-color 0.25s ease;
}

.page-faq .faq-item[open] > .faq-item__q {
  color: var(--star);
}

.page-faq .faq-item[open] > .faq-item__q .faq-item__mark {
  transform: rotate(90deg);
  border-left-color: var(--cyan);
}

.page-faq .faq-item__ans {
  padding: 0 0 20px 19px;
  max-width: 40em;
}

.page-faq .faq-item__ans p {
  margin: 0 0 10px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--haze);
}

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

.page-faq .faq-step {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 6px;
  border: 1px solid rgba(242, 193, 78, 0.38);
  border-radius: 2px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold);
  vertical-align: 1px;
}

/* ---------- 页尾引导 ---------- */

.page-faq .faq-exit {
  padding-bottom: clamp(52px, 8vw, 104px);
}

.page-faq .faq-exit__panel {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4.4vw, 48px);
  border: 1px solid var(--orbit);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(42, 31, 74, 0.9), rgba(7, 11, 24, 0) 62%),
    linear-gradient(160deg, var(--night), var(--void) 72%);
}

.page-faq .faq-exit__panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(79, 227, 208, 0.05) 72%);
}

.page-faq .faq-exit__panel h2 {
  margin: 12px 0 12px;
  font-family: var(--f-display);
  font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 600;
  line-height: 1.32;
  letter-spacing: 0.02em;
  color: var(--star);
}

.page-faq .faq-exit__lede {
  margin: 0;
  max-width: 38em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--haze);
}

.page-faq .faq-links {
  list-style: none;
  margin: 24px 0 28px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.page-faq .faq-links a {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--haze);
  border-bottom-color: var(--orbit);
  padding-bottom: 3px;
}

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

/* ---------- 桌面 ---------- */

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(40px, 6vw, 88px);
    align-items: end;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 80px);
    align-items: start;
  }

  .page-faq .faq-rail {
    order: 0;
    position: sticky;
    top: calc(var(--head-h) + var(--strip-h) + 28px);
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    position: relative;
  }

  .page-faq .faq-rail__list::before {
    content: "";
    position: absolute;
    left: 3px;
    top: 14px;
    bottom: 14px;
    width: 1px;
    background: linear-gradient(180deg, var(--orbit), rgba(46, 58, 92, 0.1));
  }

  .page-faq .faq-rail__link {
    display: grid;
    grid-template-columns: 8px minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 11px 12px 11px 0;
    border: 0;
    border-radius: 0;
    background: none;
    white-space: normal;
    font-size: 14px;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    background: none;
    color: var(--cyan);
  }

  .page-faq .faq-rail__count {
    margin-left: 0;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-item__q {
    font-size: 17px;
  }

  .page-faq .faq-item__ans p {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__mark,
  .page-faq .faq-rail__link,
  .page-faq .faq-rail__dot,
  .page-faq .faq-item__q {
    transition: none;
  }
}
<<<END>>>