.page-faq {
  --faq-gap: clamp(24px, 3.4vw, 44px);
  --faq-index-w: 232px;
  --faq-line: rgba(44, 90, 80, .55);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 4.4vw, 60px) 0 clamp(26px, 3.6vw, 48px);
  border-bottom: 1px solid var(--stroke-soft);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(to right, rgba(44, 90, 80, .26) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(44, 90, 80, .16) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .75), transparent 84%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .75), transparent 84%);
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.6vw, 40px);
  align-items: end;
}

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

.page-faq .faq-hero__copy .t-display {
  margin: 12px 0 16px;
}

.page-faq .faq-hero__meta {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
}

.page-faq .faq-hero__meta .num {
  font-size: 22px;
  color: var(--cyan);
  line-height: 1;
}

.page-faq .faq-hero__meta .unit {
  color: var(--mist);
}

.page-faq .t-lead {
  max-width: 40ch;
  margin: 0 0 20px;
  color: var(--mist);
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  min-width: 0;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--stroke);
  filter: saturate(.85) contrast(1.06) brightness(.9);
}

.page-faq .faq-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(to top, rgba(6, 28, 24, .74), transparent 58%);
}

.page-faq .faq-hero__caption {
  position: relative;
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 主体双列 ---------- */
.page-faq .faq-body {
  padding: clamp(32px, 4.6vw, 64px) 0 clamp(36px, 5vw, 72px);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

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

.page-faq .faq-index__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 3px 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--stroke);
  transition: color var(--dur) var(--ease);
}

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

/* ---------- 答案列 ---------- */
.page-faq .faq-answers {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  min-width: 0;
}

.page-faq .faq-group {
  min-width: 0;
  padding: clamp(20px, 2.8vw, 30px) clamp(18px, 2.4vw, 32px) clamp(14px, 2vw, 22px);
  background: var(--glass);
  border: 1px solid var(--stroke-soft);
  border-radius: 3px;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--stroke-soft);
}

.page-faq .faq-group__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  line-height: 1.4;
  color: var(--cyan);
  border: 1px solid var(--stroke);
  padding: 1px 7px;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: .03em;
  color: var(--white);
}

.page-faq .faq-group__hint {
  margin: 0 0 0 auto;
  font-size: 12px;
  color: var(--mist);
}

.page-faq .faq-item {
  padding: 18px 0 16px;
  border-bottom: 1px solid var(--stroke-soft);
  scroll-margin-top: calc(var(--topbar-h) + 26px);
  transition: background-color var(--dur) var(--ease);
}

.page-faq .faq-item:last-child {
  border-bottom: 0;
  padding-bottom: 4px;
}

.page-faq .faq-item:target {
  background-color: rgba(23, 230, 195, .055);
  box-shadow: inset 2px 0 0 var(--cyan);
  padding-left: 14px;
  padding-right: 14px;
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--white);
}

.page-faq .faq-item__dot {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  margin-top: 9px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-faq .faq-item__a {
  margin: 0 0 0 16px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-item__a strong {
  font-weight: 600;
  color: var(--white);
}

/* ---------- 术语表 ---------- */
.page-faq .faq-glossary {
  padding: clamp(34px, 4.6vw, 68px) 0 clamp(36px, 5vw, 72px);
  border-top: 1px solid var(--stroke-soft);
}

.page-faq .faq-glossary__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 44px);
  align-items: start;
}

.page-faq .faq-glossary .t-h2 {
  margin: 10px 0 12px;
}

.page-faq .faq-glossary__lead {
  max-width: 46ch;
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-terms {
  margin: 0;
  border-top: 1px solid var(--stroke-soft);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-term {
  padding: 14px 0;
  border-bottom: 1px solid var(--stroke-soft);
}

.page-faq .faq-term__name {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
}

.page-faq .faq-term__code {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  line-height: 1.5;
  color: var(--cyan);
  border: 1px solid var(--stroke);
  padding: 0 5px;
}

.page-faq .faq-term__desc {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

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

.page-faq .faq-glossary__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid var(--stroke);
  filter: saturate(.88) brightness(.92);
}

.page-faq .faq-glossary__figure .faq-hero__caption {
  position: static;
}

/* ---------- 收尾 ---------- */
.page-faq .faq-foot {
  padding: 0 0 clamp(44px, 6vw, 88px);
}

.page-faq .faq-foot__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  padding: clamp(22px, 3vw, 34px) clamp(18px, 2.6vw, 34px);
  background: var(--pitch);
  border: 1px solid var(--stroke-soft);
  border-left: 2px solid var(--cyan);
  border-radius: 3px;
}

.page-faq .faq-foot__text .t-h3 {
  margin: 0 0 10px;
}

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

.page-faq .faq-foot__note {
  margin: 0;
  max-width: 68ch;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
  border-top: 1px solid var(--stroke-soft);
  padding-top: 14px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-terms {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(22px, 3vw, 40px);
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-glossary__grid {
    grid-template-columns: minmax(0, 1fr) clamp(200px, 26vw, 320px);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--topbar-h) + 28px);
    padding-left: 16px;
    border-left: 2px solid var(--stroke);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-faq .faq-index__link {
    width: 100%;
  }
}

@media (max-width: 519px) {
  .page-faq .faq-item:target {
    padding-left: 10px;
    padding-right: 10px;
  }

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