.page-faq {
  --faq-num-w: 62px;
  --faq-gap: clamp(20px, 3vw, 40px);
  display: block;
  background: var(--sand);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--paper);
  border-bottom: 1px solid var(--line-soft);
  padding: clamp(28px, 5vw, 72px) 0 clamp(20px, 3vw, 40px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: .28;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: min(46vw, 560px);
  height: 100%;
  background: var(--clay);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
  opacity: .1;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  max-width: 22ch;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 62ch;
  color: var(--ink-soft);
  line-height: 1.85;
}

.page-faq .faq-hero__lead a {
  color: var(--peacock-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--peacock);
}

.page-faq .faq-hero__figure {
  margin: clamp(24px, 4vw, 40px) 0 0;
  aspect-ratio: 1400 / 600;
  overflow: hidden;
  background: var(--sand);
  border: 1px solid var(--line-soft);
}

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

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  padding: clamp(32px, 5vw, 64px) 0 clamp(36px, 5vw, 72px);
}

.page-faq .faq-body__title {
  margin: 0 0 clamp(16px, 2.5vw, 24px);
}

.page-faq .faq-filter {
  position: sticky;
  top: var(--sticky-top);
  z-index: 6;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 12px 0 14px;
  background: var(--sand);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-filter .filter-bar__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .02em;
  color: var(--ink-mute);
}

.page-faq .faq-group {
  margin-top: clamp(36px, 5vw, 68px);
}

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

.page-faq .faq-group__head {
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-group__index {
  display: inline-block;
  margin: 0 0 12px;
  padding: 3px 10px;
  background: var(--clay);
  color: var(--paper);
  font-size: .76rem;
  letter-spacing: .08em;
}

.page-faq .faq-group__head .t-h2 {
  margin: 0;
}

.page-faq .faq-group__desc {
  margin: 10px 0 0;
  max-width: 64ch;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-group__bar {
  display: block;
  height: 3px;
  margin-top: 18px;
  background: var(--gold);
}

.page-faq .faq-group__bar[data-len="4"] {
  width: clamp(78px, 20vw, 148px);
}

.page-faq .faq-group__bar[data-len="3"] {
  width: clamp(56px, 14vw, 110px);
}

.page-faq .faq-group__layout {
  display: grid;
  gap: var(--faq-gap);
  margin-top: 20px;
}

.page-faq .faq-group__figure {
  margin: 0;
}

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

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-item .accordion__trigger {
  display: grid;
  grid-template-columns: var(--faq-num-w) minmax(0, 1fr) 18px;
  gap: 12px;
  align-items: start;
  width: 100%;
  padding: 18px 0;
  margin: 0;
  background: none;
  border: 0;
  text-align: left;
  font: inherit;
  color: var(--ink);
  cursor: pointer;
  transition: color var(--fast) var(--ease);
}

.page-faq .faq-item .accordion__trigger:hover,
.page-faq .faq-item .accordion__trigger:focus-visible {
  color: var(--peacock-deep);
}

.page-faq .faq-item .accordion__trigger::after {
  content: "+";
  grid-column: 3;
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1.3;
  color: var(--peacock);
}

.page-faq .faq-item .accordion__trigger[aria-expanded="true"]::after {
  content: "−";
}

.page-faq .faq-item__num {
  display: block;
  padding: 3px 6px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  font-size: .78rem;
  letter-spacing: .04em;
  text-align: center;
  color: var(--peacock-deep);
}

.page-faq .faq-item__q {
  display: block;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.02rem;
  line-height: 1.6;
}

.page-faq .faq-item .accordion__panel {
  padding: 0 0 20px;
}

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

.page-faq .faq-item .accordion__panel > p {
  margin: 0;
  max-width: 68ch;
  font-size: .96rem;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-faq .faq-ref {
  padding: 1px 6px;
  background: rgba(22, 112, 107, .13);
  color: var(--peacock-deep);
  font-size: .86em;
  white-space: nowrap;
}

/* ---------- 术语小卡 ---------- */
.page-faq .faq-terms {
  background: var(--paper);
  padding: clamp(36px, 5vw, 72px) 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-terms__head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-terms__lead {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-terms__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .term-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 18px 20px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-top: 3px solid var(--peacock);
  transition: border-top-color var(--fast) var(--ease), transform var(--fast) var(--ease);
}

.page-faq .term-card:hover {
  border-top-color: var(--gold);
  transform: translateY(-2px);
}

.page-faq .term-card__name {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.08rem;
  color: var(--peacock-deep);
}

.page-faq .term-card__def {
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .term-card__use {
  margin: auto 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line-soft);
  font-size: .76rem;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--ink-mute);
}

/* ---------- 底部对接 ---------- */
.page-faq .faq-cta {
  padding: clamp(36px, 5vw, 68px) 0;
  background: var(--clay-deep);
  color: var(--paper);
}

.page-faq .faq-cta__inner {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 3vw, 40px);
  align-items: flex-end;
  justify-content: space-between;
  padding-top: 22px;
  border-top: 2px solid var(--gold);
}

.page-faq .faq-cta__main {
  flex: 1 1 340px;
  min-width: 0;
}

.page-faq .faq-cta__title {
  margin: 0 0 10px;
  color: var(--paper);
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 58ch;
  font-size: .95rem;
  line-height: 1.85;
  color: rgba(251, 247, 241, .82);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-cta__actions .btn--solid {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--clay-deep);
}

.page-faq .faq-cta__actions .btn--ghost {
  color: var(--paper);
  border-color: rgba(251, 247, 241, .5);
}

/* ---------- 响应式 ---------- */
@media (max-width: 599px) {
  .page-faq .faq-hero__figure {
    aspect-ratio: 16 / 9;
  }

  .page-faq .faq-filter {
    position: static;
  }

  .page-faq .faq-filter .filter-bar__count {
    margin-left: 0;
    flex-basis: 100%;
  }

  .page-faq .faq-item .accordion__trigger {
    grid-template-columns: 54px minmax(0, 1fr) 16px;
    gap: 10px;
  }
}

@media (min-width: 640px) {
  .page-faq .faq-terms__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq {
    --faq-num-w: 74px;
  }

  .page-faq .faq-item .accordion__panel {
    padding-left: calc(var(--faq-num-w) + 12px);
    padding-right: 32px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-group__layout {
    grid-template-columns: minmax(0, 1fr) minmax(220px, 300px);
    align-items: start;
  }

  .page-faq .faq-group__figure {
    position: sticky;
    top: calc(var(--sticky-top) + 24px);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-terms__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-hero__title {
    max-width: 18ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .term-card,
  .page-faq .faq-item .accordion__trigger {
    transition: none;
  }

  .page-faq .term-card:hover {
    transform: none;
  }
}
<<<END>>>