.page-faq {
  --faq-gap: 20px;
  background: var(--c-ink);
  color: var(--c-mist);
  padding-bottom: 64px;
  overflow-x: hidden;
}

.page-faq .faq-breadcrumb {
  padding-top: 18px;
}

.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
}

.page-faq .crumb {
  color: var(--c-moss);
  text-decoration: none;
}

.page-faq .crumb[aria-current="page"] {
  color: var(--c-mist);
}

.page-faq .crumb + .crumb::before {
  content: "/";
  margin-right: 8px;
  color: var(--c-rail);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: 28px 0 36px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(118deg, rgba(92, 225, 212, 0.12) 0%, rgba(92, 225, 212, 0) 46%),
    radial-gradient(circle at 82% 12%, rgba(255, 122, 61, 0.14) 0%, rgba(255, 122, 61, 0) 58%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: 28px;
}

.page-faq .faq-kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--c-moss);
}

.page-faq h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 8vw, 76px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--c-paper);
}

.page-faq .faq-lede {
  max-width: 46ch;
  margin: 0 0 24px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-mist);
}

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

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  padding: 10px;
  background: var(--c-orbit);
  border: var(--edge);
  box-shadow: 12px 12px 0 rgba(43, 69, 95, 0.35);
}

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

.page-faq .faq-hero__figure figcaption {
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-moss);
}

/* 数字摘要 */
.page-faq .faq-stats {
  padding: 8px 0 4px;
}

.page-faq .faq-stats__grid {
  display: grid;
  gap: 12px;
}

.page-faq .faq-stat {
  position: relative;
  padding: 18px 18px 16px;
  background: var(--c-orbit);
  border: var(--edge);
  border-left-width: 3px;
  border-left-color: var(--c-rail);
}

.page-faq .faq-stat--cyan {
  border-left-color: var(--c-cyan);
}

.page-faq .faq-stat--sand {
  border-left-color: var(--c-sand);
}

.page-faq .faq-stat--signal {
  border-left-color: var(--c-signal);
}

.page-faq .faq-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 44px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--c-cyan);
}

.page-faq .faq-stat--sand .faq-stat__num {
  color: var(--c-sand);
}

.page-faq .faq-stat--signal .faq-stat__num {
  color: var(--c-signal);
}

.page-faq .faq-stat__label {
  display: block;
  margin: 6px 0 8px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--c-paper);
}

.page-faq .faq-stat__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-mist);
}

/* 分类筛选条 */
.page-faq .faq-chips {
  display: flex;
  gap: 8px;
  padding: 22px 0 6px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-chips::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-chip {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  font-size: 13px;
  color: var(--c-mist);
  text-decoration: none;
  border: var(--edge);
  background: rgba(14, 34, 56, 0.6);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  color: var(--c-cyan);
  border-color: var(--c-cyan);
}

.page-faq .faq-chip__no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-moss);
}

/* 主体分栏 */
.page-faq .faq-body {
  display: grid;
  gap: 8px;
  padding-top: 18px;
}

.page-faq .faq-rail {
  display: none;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-moss);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--c-rail);
}

.page-faq .faq-rail__link {
  display: flex;
  gap: 10px;
  margin-left: -1px;
  padding: 11px 12px;
  font-size: 14px;
  color: var(--c-mist);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-rail__link span {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-moss);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--c-cyan);
  border-left-color: var(--c-cyan);
}

/* 分组 */
.page-faq .faq-group {
  padding: 30px 0 6px;
  border-top: var(--edge);
  scroll-margin-top: 96px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  margin-bottom: 16px;
}

.page-faq .faq-group__no {
  padding-top: 22px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--c-cyan);
}

.page-faq h2 {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 5vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.page-faq .faq-group__lede {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-mist);
}

.page-faq .faq-group__media {
  margin: 0 0 18px;
  padding: 8px;
  background: var(--c-orbit);
  border: var(--edge);
}

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

.page-faq .faq-group__media figcaption {
  padding-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-moss);
}

/* 手风琴 */
.page-faq .faq-item {
  border-bottom: var(--edge);
  transition: border-color 0.2s var(--ease);
}

.page-faq .faq-item[open] {
  border-bottom-color: var(--c-cyan);
}

.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__no {
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--c-moss);
}

.page-faq .faq-item__q {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--c-paper);
}

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

.page-faq .faq-item__sign {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 6px;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--c-cyan);
}

.page-faq .faq-item__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
  transition: transform 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-item__sign::after {
  transform: scaleY(0);
}

.page-faq .faq-item__a {
  padding: 0 0 18px 30px;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-faq .faq-item__link {
  display: inline-block;
  font-size: 13px;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(92, 225, 212, 0.4);
  padding-bottom: 2px;
}

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

/* 收尾 */
.page-faq .faq-next {
  margin-top: 44px;
  padding: 30px 0;
  background: var(--c-paper);
  color: var(--c-black);
}

.page-faq .faq-next__inner {
  display: grid;
  gap: 20px;
}

.page-faq .faq-next h2 {
  margin: 0 0 8px;
  color: var(--c-black);
}

.page-faq .faq-next p {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.75;
  color: #24303C;
}

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-next .btn--ghost {
  color: var(--c-black);
  border-color: var(--c-black);
}

@media (min-width: 640px) {
  .page-faq .faq-stats__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-stat__num {
    font-size: 52px;
  }

  .page-faq .faq-hero__figure {
    box-shadow: 16px 16px 0 rgba(43, 69, 95, 0.4);
  }
}

@media (min-width: 900px) {
  .page-faq {
    padding-bottom: 80px;
  }

  .page-faq .faq-hero {
    padding: 40px 0 52px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 5fr;
    align-items: end;
    gap: 40px;
  }

  .page-faq .faq-hero__figure {
    margin-bottom: 6px;
  }

  .page-faq .faq-chips {
    flex-wrap: wrap;
    overflow: visible;
    padding-top: 26px;
  }

  .page-faq .faq-item summary {
    padding: 18px 0;
  }

  .page-faq .faq-item__q {
    font-size: 17px;
  }

  .page-faq .faq-next__inner {
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 32px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-body {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
    padding-top: 26px;
  }

  .page-faq .faq-rail {
    display: block;
    position: sticky;
    top: 100px;
  }

  .page-faq .faq-group {
    padding-top: 36px;
  }

  .page-faq .faq-main > .faq-group:first-child {
    border-top: 0;
    padding-top: 4px;
  }

  .page-faq .faq-item__a {
    padding-left: 34px;
    padding-right: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .faq-rail__link,
  .page-faq .faq-item,
  .page-faq .faq-item__sign::after {
    transition: none;
  }
}
<<<END>>>