.page-faq {
  --faq-hairline: rgba(14, 34, 68, .95);
  --faq-cyan-line: rgba(95, 224, 208, .3);
  --faq-cyan-glow: rgba(95, 224, 208, .09);
  --faq-radius: var(--radius-m, .85rem);
  padding-block: .75rem 5rem;
  color: var(--silver);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  gap: 1.75rem;
  margin-top: 1rem;
  padding-bottom: 2.25rem;
  isolation: isolate;
}

.page-faq .faq-hero__art {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  opacity: .7;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), rgba(0, 0, 0, .15));
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), rgba(0, 0, 0, .15));
}

.page-faq .faq-hero__copy {
  display: grid;
  gap: .85rem;
  align-content: start;
}

.page-faq .faq-hero__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-size: clamp(2.15rem, 7vw, 3.5rem);
  line-height: 1.12;
  letter-spacing: .1em;
  font-weight: 700;
  color: var(--silver);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 46ch;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--grey);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem;
  margin: .25rem 0 0;
  font-size: .82rem;
  color: var(--grey);
}

.page-faq .faq-hero__meta .mono {
  font-family: var(--font-mono);
  color: var(--cyan);
  letter-spacing: .06em;
}

.page-faq .faq-hero__dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--gold);
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  border: var(--hairline);
  border-radius: var(--radius-l, 1.3rem);
  overflow: hidden;
  background: linear-gradient(155deg, rgba(14, 34, 68, .92), rgba(3, 7, 18, .96));
  box-shadow: 0 32px 60px -50px rgba(95, 224, 208, .6);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-faq .faq-hero__figure figcaption {
  padding: .7rem 1rem .85rem;
  border-top: var(--hairline);
  font-size: .78rem;
  line-height: 1.7;
  color: var(--grey);
}

/* ---------- 分组快速跳转 ---------- */
.page-faq .faq-jump {
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  padding: .75rem 0 1rem;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

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

.page-faq .faq-jump__link {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .48rem .9rem;
  border: var(--hairline);
  border-radius: 999px;
  background: rgba(7, 18, 38, .6);
  color: var(--grey);
  text-decoration: none;
  font-size: .84rem;
  white-space: nowrap;
  transition: color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  color: var(--silver);
  border-color: var(--faq-cyan-line);
  background: var(--faq-cyan-glow);
  box-shadow: 0 0 0 1px rgba(95, 224, 208, .16), 0 14px 30px -26px rgba(95, 224, 208, .8);
  outline: none;
}

.page-faq .faq-jump__idx {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--cyan);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-group {
  position: relative;
  padding-block: 2.5rem;
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg,
    rgba(95, 224, 208, .5),
    rgba(14, 34, 68, .95) 42%,
    rgba(14, 34, 68, .95));
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .9rem;
  align-items: start;
  margin-bottom: 1.5rem;
}

.page-faq .faq-group__idx {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  line-height: 1.1;
  letter-spacing: .06em;
  color: var(--cyan);
  opacity: .85;
}

.page-faq .faq-group__title {
  margin: 0 0 .4rem;
  font-size: clamp(1.2rem, 4vw, 1.6rem);
  line-height: 1.4;
  letter-spacing: .08em;
  font-weight: 700;
  color: var(--silver);
}

.page-faq .faq-group__lede {
  margin: 0;
  max-width: 56ch;
  font-size: .92rem;
  line-height: 1.85;
  color: var(--grey);
}

.page-faq .faq-list {
  display: grid;
  gap: .7rem;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border: var(--hairline);
  border-radius: var(--faq-radius);
  background: linear-gradient(150deg, rgba(7, 18, 38, .9), rgba(3, 7, 18, .7));
  transition: border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(95, 224, 208, .3);
}

.page-faq .faq-item[open] {
  border-color: rgba(95, 224, 208, .48);
  background: linear-gradient(150deg, rgba(14, 34, 68, .95), rgba(7, 18, 38, .82));
  box-shadow: 0 26px 50px -44px rgba(95, 224, 208, .9);
}

.page-faq .faq-item__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: .8rem;
  padding: 1rem 1.05rem;
  cursor: pointer;
  list-style: none;
  color: var(--silver);
  font-size: .96rem;
  line-height: 1.6;
  transition: color var(--dur) var(--ease);
}

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

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

.page-faq .faq-item__summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
  border-radius: var(--faq-radius);
}

.page-faq .faq-item__idx {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--cyan);
  padding: .2rem .42rem;
  border: 1px solid rgba(95, 224, 208, .28);
  border-radius: var(--radius-s, .5rem);
  transition: background-color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              color var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__idx {
  background: rgba(95, 224, 208, .18);
  border-color: rgba(95, 224, 208, .6);
  color: var(--gold-soft);
}

.page-faq .faq-item__mark {
  position: relative;
  width: 1rem;
  height: 1rem;
  flex: none;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--cyan);
  border-radius: 1px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .faq-item__mark::before {
  width: 100%;
  height: 1px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__mark::after {
  width: 1px;
  height: 100%;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 0 1.05rem 1.15rem;
  color: var(--grey);
  font-size: .93rem;
  line-height: 1.9;
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: 62ch;
}

.page-faq .faq-item__body p + p {
  margin-top: .65rem;
}

.page-faq .faq-item__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(95, 224, 208, .4);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-item__body a:hover,
.page-faq .faq-item__body a:focus-visible {
  color: var(--gold-soft);
  border-bottom-color: rgba(242, 184, 91, .7);
}

/* ---------- 页内配图 ---------- */
.page-faq .faq-figure {
  margin: 1rem 0 0;
  border: var(--hairline);
  border-radius: var(--radius-m, .85rem);
  overflow: hidden;
  background: linear-gradient(160deg, rgba(14, 34, 68, .85), rgba(3, 7, 18, .95));
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: .6rem .9rem .7rem;
  border-top: var(--hairline);
  font-size: .76rem;
  line-height: 1.7;
  color: var(--grey);
}

/* ---------- 收尾行动区 ---------- */
.page-faq .faq-cta {
  position: relative;
  margin-top: .5rem;
  padding-top: 2.5rem;
}

.page-faq .faq-cta::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg,
    rgba(242, 184, 91, .55),
    rgba(14, 34, 68, .95) 46%,
    rgba(14, 34, 68, .95));
}

.page-faq .faq-cta__card {
  display: grid;
  gap: .85rem;
  padding: 1.5rem 1.25rem 1.6rem;
  border-radius: var(--radius-l, 1.3rem);
}

.page-faq .faq-cta__title {
  margin: 0;
  font-size: clamp(1.15rem, 4vw, 1.5rem);
  line-height: 1.4;
  letter-spacing: .08em;
  color: var(--silver);
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 58ch;
  font-size: .93rem;
  line-height: 1.9;
  color: var(--grey);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: .35rem;
}

.page-faq .faq-cta__note {
  margin: .35rem 0 0;
  padding-top: .85rem;
  border-top: var(--hairline);
  font-size: .82rem;
  line-height: 1.8;
  color: var(--grey);
}

.page-faq .faq-cta__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(95, 224, 208, .4);
}

.page-faq .faq-cta__note a:hover,
.page-faq .faq-cta__note a:focus-visible {
  color: var(--gold-soft);
  border-bottom-color: rgba(242, 184, 91, .7);
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-item__body {
    padding: 0 1.35rem 1.3rem 3rem;
  }

  .page-faq .faq-item__summary {
    padding: 1.05rem 1.35rem;
    font-size: 1rem;
  }

  .page-faq .faq-cta__card {
    padding: 1.9rem 1.8rem 2rem;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: center;
    gap: 2.75rem;
    padding-bottom: 3rem;
  }

  .page-faq .faq-group__head {
    gap: 1.4rem;
  }

  .page-faq .faq-group__idx {
    font-size: 1.75rem;
  }

  .page-faq .faq-list {
    padding-left: 3.5rem;
  }

  .page-faq .faq-hero__figure img {
    aspect-ratio: 16 / 10;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero {
    gap: 3.5rem;
  }

  .page-faq .faq-group__head {
    grid-template-columns: 4.5rem minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__summary,
  .page-faq .faq-item__idx,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-jump__link {
    transition: none;
  }
}