.page-faq {
  --faq-index-w: 212px;
  --faq-rule: rgba(51, 65, 92, 0.55);
  --faq-rule-soft: rgba(51, 65, 92, 0.32);
  background: var(--ink);
  color: var(--text-soft);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + 2.75rem) 0 3rem;
  background:
    radial-gradient(90% 62% at 86% 4%, rgba(127, 209, 232, 0.10), transparent 62%),
    radial-gradient(72% 58% at 4% 0%, rgba(184, 135, 58, 0.12), transparent 60%),
    linear-gradient(180deg, var(--black) 0%, var(--ink) 58%, var(--ink) 100%);
}

.page-faq .faq-hero__head {
  display: grid;
  gap: 1.1rem;
  margin: 1.6rem 0 2.25rem;
}

.page-faq .faq-hero__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--mist);
}

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

.page-faq .faq-hero__title {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.75rem, 11vw, 6rem);
  line-height: 0.94;
  letter-spacing: -0.03em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  max-width: 44ch;
  margin-top: 1.25rem;
  color: var(--text-soft);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem 2.75rem;
  margin: 0;
  padding: 1.25rem 0 0;
  list-style: none;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-hero__stats .stat {
  min-width: 8.5rem;
}

.page-faq .faq-hero__stats .stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--copper-lit);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__stats .stat__label {
  display: block;
  margin-top: 0.35rem;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-faq .faq-banner {
  margin: 2.5rem 0 0;
}

/* ---------- 主体布局 ---------- */

.page-faq .faq-body {
  padding: 2.25rem 0 3.5rem;
  background: var(--ink);
}

.page-faq .faq-layout {
  display: grid;
  gap: 2rem;
}

/* ---------- 分组索引 ---------- */

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

.page-faq .faq-index__title {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--copper);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 0.45rem;
  margin: 0;
  padding: 0 0 0.6rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

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

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  white-space: nowrap;
  font-size: 14px;
  color: var(--mist);
  text-decoration: none;
  border: 1px solid var(--faq-rule);
  border-radius: var(--radius);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--paper);
  border-color: var(--copper);
  background: rgba(184, 135, 58, 0.08);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--copper);
}

/* ---------- 分组 ---------- */

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

.page-faq .faq-group {
  position: relative;
  padding-top: 2rem;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 56px;
  height: 1px;
  background: var(--copper);
}

.page-faq .faq-group + .faq-group {
  margin-top: 3.25rem;
}

.page-faq .faq-group:target {
  background: linear-gradient(90deg, rgba(184, 135, 58, 0.07), transparent 62%);
}

.page-faq .faq-group__head {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--copper);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.4vw, 1.75rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__note {
  max-width: 46ch;
  margin: 0.35rem 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 问答条目 ---------- */

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

.page-faq .qa__summary {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr) 1.1rem;
  gap: 0.5rem 0.7rem;
  align-items: start;
  padding: 1.1rem 0.25rem;
  cursor: pointer;
  list-style: none;
  transition: background-color var(--dur) var(--ease);
}

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

.page-faq .qa__summary:hover {
  background: rgba(27, 42, 74, 0.5);
}

.page-faq .qa__summary:focus-visible {
  outline: 1px solid var(--copper-lit);
  outline-offset: -1px;
}

.page-faq .qa__num {
  padding-top: 0.3rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.09em;
  color: var(--copper);
}

.page-faq .qa__head {
  display: block;
  min-width: 0;
}

.page-faq .qa__q {
  display: block;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
}

.page-faq .qa__conclusion {
  display: block;
  margin-top: 0.5rem;
  padding-left: 0.8rem;
  border-left: 2px solid var(--copper);
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .qa__toggle {
  position: relative;
  align-self: start;
  margin-top: 0.45rem;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-faq .qa__toggle::before,
.page-faq .qa__toggle::after {
  content: "";
  position: absolute;
  background: var(--copper-lit);
}

.page-faq .qa__toggle::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  transform: translateY(-50%);
}

.page-faq .qa__toggle::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  transform: translateX(-50%);
  transition: transform var(--dur) var(--ease);
}

.page-faq .qa[open] .qa__toggle::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .qa[open] .qa__summary {
  background: rgba(27, 42, 74, 0.35);
}

.page-faq .qa__body {
  max-width: 68ch;
  padding: 0 0.25rem 1.35rem;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-faq .qa__body p {
  margin: 0;
  color: var(--mist);
}

.page-faq .qa__body p + p {
  margin-top: 0.7rem;
}

.page-faq .faq-inline-media {
  margin: 1.9rem 0 0;
  max-width: 100%;
}

/* ---------- 下一步 ---------- */

.page-faq .faq-next {
  position: relative;
  padding: clamp(2.5rem, 7vw, 4.5rem) 0;
  background: var(--paper);
  color: var(--ink);
}

.page-faq .faq-next::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--copper) 0 16%, rgba(51, 65, 92, 0.22) 16% 100%);
}

.page-faq .faq-next__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brick);
}

.page-faq .faq-next__title {
  max-width: 22ch;
  margin: 0.75rem 0 1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.6rem, 4.6vw, 2.5rem);
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-faq .faq-next__text {
  max-width: 54ch;
  margin: 0;
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-faq .faq-next__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem 1.25rem;
  margin-top: 1.75rem;
}

.page-faq .faq-next__links {
  max-width: 64ch;
  margin: 1.6rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(51, 65, 92, 0.25);
  font-size: 15px;
  line-height: 1.85;
  color: var(--steel);
}

.page-faq .faq-next__links a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--copper);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--dur) var(--ease), text-decoration-color var(--dur) var(--ease);
}

.page-faq .faq-next__links a:hover,
.page-faq .faq-next__links a:focus-visible {
  color: var(--brick);
  text-decoration-color: var(--brick);
}

/* ---------- 媒体查询 ---------- */

@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding-top: calc(var(--header-h) + 4rem);
    padding-bottom: 3.5rem;
  }

  .page-faq .faq-hero__head {
    grid-template-columns: 62px minmax(0, 1fr);
    gap: 2rem;
    margin: 2rem 0 2.75rem;
  }

  .page-faq .faq-hero__note {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    padding-top: 0.3rem;
  }

  .page-faq .faq-group__head {
    grid-template-columns: 3rem minmax(0, 1fr);
    gap: 0 1.25rem;
    align-items: baseline;
  }

  .page-faq .faq-group__num {
    grid-row: 1 / span 2;
  }

  .page-faq .qa__summary {
    grid-template-columns: 3.25rem minmax(0, 1fr) 1.25rem;
    gap: 0.5rem 1rem;
    padding: 1.25rem 0.5rem;
  }

  .page-faq .qa__body {
    padding-left: 4.25rem;
    padding-right: 3rem;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 3.5rem;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 1.75rem);
    align-self: start;
  }

  .page-faq .faq-index__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__item + .faq-index__item {
    margin-top: 0.25rem;
  }

  .page-faq .faq-index__link {
    display: flex;
    width: 100%;
    padding: 0.55rem 0.6rem;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: transparent;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--copper);
    background: rgba(184, 135, 58, 0.06);
  }

  .page-faq .faq-inline-media {
    max-width: 540px;
    margin-left: auto;
    margin-right: 0;
  }

  .page-faq .faq-next__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.62fr);
    column-gap: 3.5rem;
    align-items: start;
  }

  .page-faq .faq-next__kicker,
  .page-faq .faq-next__title,
  .page-faq .faq-next__text,
  .page-faq .faq-next__actions {
    grid-column: 1;
  }

  .page-faq .faq-next__links {
    grid-column: 2;
    grid-row: 1 / span 4;
    margin-top: 0.25rem;
    padding-top: 0;
    padding-left: 1.5rem;
    border-top: 0;
    border-left: 1px solid rgba(51, 65, 92, 0.25);
  }
}
<<<END>>>