.page-faq {
  --faq-muted: #46585f;
  --faq-gap: 16px;
  display: block;
  background: var(--paper);
  color: var(--ink);
}

.page-faq .breadcrumbs {
  padding: 18px 0 0;
}

.page-faq .breadcrumbs__sep {
  margin: 0 8px;
  color: var(--gray);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin-top: 16px;
  padding: 34px 0 40px;
  background: var(--ink);
  color: var(--text-light);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, var(--grid-light) 0 1px, transparent 1px 34px),
    repeating-linear-gradient(0deg, var(--grid-light) 0 1px, transparent 1px 34px);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -60px;
  width: 240px;
  height: 240px;
  background: var(--green);
  clip-path: polygon(100% 0, 100% 100%, 38% 0);
  opacity: .55;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
}

.page-faq .faq-hero__copy {
  position: relative;
  z-index: 2;
}

.page-faq .faq-hero .kicker {
  color: var(--yellow);
}

.page-faq .faq-hero .title-xl {
  margin: 10px 0 0;
  color: #fff;
  max-width: 20ch;
}

.page-faq .faq-hero .lede {
  margin: 16px 0 0;
  max-width: 62ch;
  color: var(--text-light);
  opacity: .9;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-hero .btn--outline {
  border-color: var(--text-light);
  color: var(--text-light);
  box-shadow: 4px 4px 0 var(--green);
}

.page-faq .faq-hero__media {
  position: relative;
  padding-bottom: 6px;
}

.page-faq .faq-hero__media .media {
  border: var(--edge);
  border-color: var(--green);
  box-shadow: var(--hard);
}

.page-faq .faq-hero__media .media__caption {
  font-size: 12px;
  color: var(--text-light);
  background: rgba(13, 27, 42, .82);
}

.page-faq .faq-hero__plate {
  position: absolute;
  right: 12px;
  bottom: 0;
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 14px;
  background: var(--yellow);
  color: var(--ink);
  border: var(--edge);
  box-shadow: var(--hard-sm);
}

.page-faq .stat-plate__num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.01em;
  font-variant-numeric: tabular-nums;
}

.page-faq .stat-plate__label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-main {
  padding: 36px 0 44px;
}

.page-faq .faq-shell {
  display: grid;
  gap: 28px;
  align-items: start;
}

.page-faq .faq-index {
  border: var(--edge);
  background: #fff;
  box-shadow: var(--hard-sm);
  padding: 18px 18px 20px;
  background-image: repeating-linear-gradient(0deg, var(--grid-ink) 0 1px, transparent 1px 14px);
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 3px solid var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--green-deep);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border: 2px solid transparent;
  text-decoration: none;
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.45;
  transition: background-color .15s ease, border-color .15s ease, transform .15s ease;
}

.page-faq .faq-index__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--orange);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--green);
  border-color: var(--ink);
  box-shadow: var(--hard-sm);
  transform: translate(-2px, -2px);
  outline: none;
}

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

.page-faq .faq-index__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.65;
  color: var(--faq-muted);
}

/* ---------- 答案区 ---------- */
.page-faq .faq-answers {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 20px);
  margin-bottom: 42px;
}

.page-faq .faq-group__head {
  display: grid;
  gap: 6px;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 3px solid var(--ink);
}

.page-faq .faq-group__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--orange);
}

.page-faq .faq-group .title-lg {
  margin: 0;
  color: var(--ink);
}

.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  background: #fff;
  border: var(--edge);
  border-left: 10px solid var(--accent);
  box-shadow: var(--hard-sm);
  transition: box-shadow .18s ease, border-left-color .18s ease;
}

.page-faq .faq-item:hover {
  box-shadow: 6px 6px 0 var(--accent-deep);
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

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

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

.page-faq .faq-item__mark {
  flex: none;
  padding: 2px 7px;
  background: var(--ink);
  color: var(--text-light);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .faq-item__icon {
  flex: none;
  position: relative;
  width: 16px;
  height: 16px;
  margin-left: auto;
  margin-top: 5px;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--accent-deep);
  transition: transform .18s ease;
}

.page-faq .faq-item__icon::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-item__icon::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

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

.page-faq .faq-item__a {
  margin: 0 14px 14px;
  padding: 12px 14px;
  background: var(--paper);
  border-top: 2px solid var(--accent);
  animation: faq-answer-in .28s ease-out both;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--faq-muted);
}

@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-figure {
  margin: 0 0 18px;
  border: var(--edge);
  box-shadow: var(--hard-sm);
}

.page-faq .faq-figure .media__caption {
  font-size: 12px;
  background: rgba(13, 27, 42, .82);
  color: var(--text-light);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-next {
  position: relative;
  padding: 40px 0 46px;
  background: var(--ink);
  color: var(--text-light);
  overflow: hidden;
}

.page-faq .faq-next::before {
  content: "";
  position: absolute;
  left: -40px;
  bottom: -60px;
  width: 200px;
  height: 200px;
  background: var(--orange);
  clip-path: polygon(0 100%, 100% 100%, 0 30%);
  opacity: .5;
  pointer-events: none;
}

.page-faq .faq-next__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 22px;
  align-items: center;
}

.page-faq .faq-next .kicker {
  color: var(--yellow);
  margin: 0 0 8px;
}

.page-faq .faq-next .title-lg {
  margin: 0;
  color: #fff;
  max-width: 22ch;
}

.page-faq .faq-next__copy p {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-light);
  opacity: .88;
}

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-next .btn--outline {
  border-color: var(--text-light);
  color: var(--text-light);
  box-shadow: 4px 4px 0 var(--orange);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-item__a {
    margin-left: 52px;
    padding: 14px 18px;
  }

  .page-faq .faq-item__q {
    font-size: 17px;
    padding: 17px 20px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 52px 0 58px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: center;
    gap: 52px;
  }

  .page-faq .faq-hero__plate {
    right: -18px;
    bottom: 10px;
  }

  .page-faq .faq-shell {
    grid-template-columns: 262px minmax(0, 1fr);
    gap: 56px;
  }

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

  .page-faq .faq-main {
    padding: 52px 0 60px;
  }

  .page-faq .faq-next {
    padding: 54px 0 60px;
  }

  .page-faq .faq-next__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__a {
    animation: none;
  }

  .page-faq .faq-index__link,
  .page-faq .faq-item,
  .page-faq .faq-item__icon::after {
    transition: none;
  }

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