.page-faq {
  --faq-gap: clamp(14px, 2.4vw, 22px);
  --faq-radius: 12px;
  display: block;
  padding-bottom: clamp(56px, 9vw, 110px);
}

.page-faq .breadcrumb {
  margin-top: clamp(18px, 3vw, 32px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(20px, 4vw, 44px);
  max-width: 62ch;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-size: var(--fs-h1);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--c-white);
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 56ch;
  font-size: var(--fs-body);
  line-height: 1.8;
  color: rgba(232, 255, 244, 0.82);
}

/* ---------- 六格分区索引 ---------- */
.page-faq .faq-index {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: clamp(28px, 5vw, 48px);
}

.page-faq .faq-index__item {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 92px;
  padding: 16px 14px;
  border: var(--bw) solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--c-stand);
  color: var(--c-white);
  text-decoration: none;
  transition: border-color var(--t-fast) var(--ease),
    box-shadow var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease);
}

.page-faq .faq-index__item:hover,
.page-faq .faq-index__item:focus-visible {
  border-color: var(--c-neon);
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--c-amber);
}

.page-faq .faq-index__label {
  font-size: 14px;
  line-height: 1.45;
  color: rgba(232, 255, 244, 0.9);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-top: clamp(44px, 7vw, 84px);
  padding-top: clamp(22px, 3vw, 34px);
  border-top: var(--bw) solid var(--line-soft);
  scroll-margin-top: 110px;
  transition: border-color var(--t-mid) var(--ease);
}

.page-faq .faq-group:target {
  border-top-color: var(--c-neon);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: var(--faq-gap);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: var(--fs-index);
  letter-spacing: 0.18em;
  color: var(--c-muted);
  flex: none;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: var(--fs-h2);
  font-weight: 700;
  line-height: 1.15;
  color: var(--c-white);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: block;
}

.page-faq .faq-item {
  position: relative;
  margin-bottom: 10px;
  border: var(--bw) solid var(--line-soft);
  border-radius: var(--faq-radius);
  background: var(--c-card);
  overflow: hidden;
  transition: border-color var(--t-fast) var(--ease),
    box-shadow var(--t-fast) var(--ease);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--c-neon);
  opacity: 0;
  transition: opacity var(--t-fast) var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--line-strong);
}

.page-faq .faq-item[open]::before {
  opacity: 1;
}

.page-faq .faq-item:hover {
  border-color: var(--line);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 17px 18px;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-body);
  font-weight: 600;
  line-height: 1.55;
  color: var(--c-white);
  transition: color var(--t-fast) var(--ease);
}

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

.page-faq .faq-item__q:hover {
  color: var(--c-mint);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--c-neon);
  outline-offset: -4px;
}

.page-faq .faq-item__mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 6px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--c-neon);
  transition: transform var(--t-fast) var(--ease),
    opacity var(--t-fast) var(--ease);
}

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

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

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

.page-faq .faq-item__a {
  padding: 0 18px 20px 44px;
  border-top: 1px solid var(--line-soft);
  padding-top: 16px;
}

.page-faq .faq-item__a p {
  margin: 0 0 0.9em;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(232, 255, 244, 0.85);
}

.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__a a {
  color: var(--c-mint);
  text-decoration: underline;
  text-decoration-color: var(--c-brand);
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  color: var(--c-neon);
  text-decoration-color: var(--c-neon);
}

.page-faq .mono {
  font-family: var(--font-mono);
  font-size: 0.94em;
  color: var(--c-mint);
  word-break: break-all;
}

.page-faq .t {
  font-family: var(--font-mono);
  color: var(--c-amber);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 var(--faq-gap);
  border: var(--bw) solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--c-deep);
  overflow: hidden;
}

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

.page-faq .faq-figure__cap {
  padding: 11px 16px;
  border-top: 1px solid var(--line-soft);
  font-size: var(--fs-index);
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--c-muted);
}

/* ---------- 补充反馈 ---------- */
.page-faq .followup {
  padding: clamp(20px, 3vw, 34px);
  border: var(--bw) solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--c-deep);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .followup__lead {
  margin: 0 0 22px;
  max-width: 54ch;
  font-size: var(--fs-body);
  line-height: 1.8;
  color: var(--c-white);
}

.page-faq .followup__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-faq .followup__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .followup__item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .followup__idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-index);
  letter-spacing: 0.16em;
  color: var(--c-neon);
  padding-top: 3px;
}

.page-faq .followup__title {
  margin: 0 0 4px;
  font-size: var(--fs-h4);
  font-weight: 700;
  color: var(--c-white);
}

.page-faq .followup__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(232, 255, 244, 0.82);
}

.page-faq .followup__note {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  font-size: 15px;
  line-height: 1.78;
  color: rgba(232, 255, 244, 0.85);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-index__item {
    min-height: 108px;
    padding: 18px 16px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 12px;
  }

  .page-faq .faq-index__item {
    min-height: 132px;
    justify-content: space-between;
  }

  .page-faq .faq-index__num {
    font-size: 1.8rem;
  }

  .page-faq .faq-item__q {
    padding: 19px 24px;
  }

  .page-faq .faq-item__a {
    padding: 18px 24px 22px 50px;
  }

  .page-faq .faq-figure {
    margin-bottom: 26px;
  }

  .page-faq .followup__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .followup__item {
    flex-direction: column;
    gap: 8px;
    padding-top: 0;
    border-top: 0;
  }

  .page-faq .followup__idx {
    padding-top: 0;
  }
}

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

  .page-faq .faq-index__item:hover,
  .page-faq .faq-index__item:focus-visible {
    transform: none;
  }
}