.page-faq {
  --faq-index-w: 214px;
  --faq-hair: rgba(110, 123, 139, 0.34);
  --faq-on-dark: rgba(244, 237, 224, 0.78);
  --faq-on-dark-soft: rgba(244, 237, 224, 0.56);
  display: flex;
  flex-direction: column;
  gap: var(--panel-gap);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  margin: 0 0 2px;
}

.page-faq .breadcrumb__current {
  color: var(--slate);
}

/* ---------- 首屏画板 ---------- */
.page-faq .page-faq__hero {
  position: relative;
  padding: 34px 22px 30px;
  overflow: hidden;
}

.page-faq .page-faq__hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 96px;
  height: 3px;
  background: var(--signal);
}

.page-faq .page-faq__title {
  margin: 16px 0 0;
  font-family: var(--font-head);
  font-size: clamp(27px, 6.4vw, 42px);
  line-height: 1.18;
  letter-spacing: 0.05em;
  font-weight: 700;
  color: var(--white);
  max-width: 22em;
}

.page-faq .page-faq__lead {
  margin: 18px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--faq-on-dark);
}

.page-faq .page-faq__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid rgba(244, 237, 224, 0.16);
  list-style: none;
}

.page-faq .page-faq__meta-key {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--signal);
}

.page-faq .page-faq__meta-val {
  display: block;
  margin-top: 7px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--cream);
}

/* ---------- 横向氛围带 ---------- */
.page-faq .faq-band {
  margin: 0;
}

.page-faq .faq-band__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 3;
  object-fit: cover;
  border-radius: var(--radius);
}

.page-faq .faq-band .figure__caption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--slate);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: var(--panel-gap);
  align-items: start;
}

.page-faq .faq-groups {
  display: grid;
  gap: var(--panel-gap);
}

/* ---------- 锚点索引 ---------- */
.page-faq .faq-index {
  padding: 16px 0;
}

.page-faq .faq-index__caption {
  margin: 0 0 10px;
  padding: 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--faq-on-dark-soft);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 0 12px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-index__link {
  display: block;
  padding: 10px 12px;
  border-bottom: 2px solid transparent;
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  color: var(--faq-on-dark);
  transition: color 0.18s ease-out, border-color 0.18s ease-out;
}

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

/* ---------- 问题分组画板 ---------- */
.page-faq .faq-group {
  padding: 26px 20px 10px;
  scroll-margin-top: calc(var(--frame-h) + 20px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--navy);
}

.page-faq .faq-group__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--slate);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.page-faq .faq-group__note {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--slate);
}

.page-faq .faq-group__list {
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-hair);
}

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

/* ---------- 可展开问答 ---------- */
.page-faq .qa__head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .qa__q {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.55;
  letter-spacing: 0.05em;
  color: var(--ink);
  transition: letter-spacing 0.22s ease-out;
}

.page-faq .qa[open] .qa__q {
  letter-spacing: 0.02em;
}

.page-faq .qa__mark {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 6px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--navy);
  transition: transform 0.22s ease-out;
}

.page-faq .qa__mark::before {
  width: 14px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .qa__mark::after {
  width: 2px;
  height: 14px;
  transform: translate(-50%, -50%);
}

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

.page-faq .qa__body {
  margin-left: 34px;
  padding: 0 0 22px;
}

.page-faq .qa__body p {
  margin: 0 0 12px;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
}

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

.page-faq .qa__body a {
  color: var(--navy);
  text-decoration: none;
  border-bottom: 1px solid var(--molten);
  padding-bottom: 1px;
}

.page-faq .qa__body a:hover,
.page-faq .qa__body a:focus-visible {
  border-bottom-color: var(--navy);
}

.page-faq .qa__num {
  font-family: var(--font-mono);
  font-size: 1.42em;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--navy);
  font-variant-numeric: tabular-nums;
}

/* ---------- 复核流程（深色收尾画板） ---------- */
.page-faq .page-faq__review {
  padding: 30px 20px 34px;
}

.page-faq .review__head {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .review__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--white);
}

.page-faq .review__note {
  margin: 0;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--faq-on-dark);
}

.page-faq .review-grid {
  display: grid;
  gap: 26px;
  margin-top: 26px;
}

.page-faq .review-figure {
  margin: 0;
}

.page-faq .review-figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius);
}

.page-faq .review-figure .figure__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--faq-on-dark-soft);
}

.page-faq .review-steps {
  display: grid;
  gap: 24px;
  margin: 0;
  padding: 4px 0 4px 22px;
  list-style: none;
  border-left: 1px solid rgba(127, 216, 255, 0.36);
}

.page-faq .review-step {
  position: relative;
}

.page-faq .review-step::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 7px;
  width: 9px;
  height: 9px;
  background: var(--ice);
  transform: rotate(45deg);
}

.page-faq .review-step__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--referee);
}

.page-faq .review-step__name {
  margin: 7px 0 0;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--white);
}

.page-faq .review-step__desc {
  margin: 8px 0 0;
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--faq-on-dark);
}

.page-faq .review-mailbox {
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid rgba(244, 237, 224, 0.16);
}

.page-faq .review-mailbox__title {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--white);
}

.page-faq .review-mail {
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 18px 18px 18px 18px;
  list-style: none;
  border: 1px solid rgba(255, 212, 0, 0.34);
  border-radius: var(--radius);
}

.page-faq .review-mail li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--faq-on-dark);
}

.page-faq .review-mail li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  background: var(--referee);
  border-radius: 1px;
  transform: rotate(45deg);
}

.page-faq .review-channel {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--faq-on-dark);
}

.page-faq .review-channel--sub {
  margin-top: 12px;
  font-family: var(--font-body);
  font-size: 13.5px;
  color: var(--faq-on-dark-soft);
}

.page-faq .review-channel--sub a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 224, 138, 0.4);
}

.page-faq .review-channel--sub a:hover,
.page-faq .review-channel--sub a:focus-visible {
  border-bottom-color: var(--signal);
}

/* ---------- 响应式 ---------- */
@media (max-width: 559px) {
  .page-faq .qa__body {
    margin-left: 0;
  }

  .page-faq .qa__q {
    font-size: 16px;
  }
}

@media (min-width: 720px) {
  .page-faq .page-faq__hero {
    padding: 46px 40px 40px;
  }

  .page-faq .page-faq__meta {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px 24px;
  }

  .page-faq .faq-group {
    padding: 32px 34px 14px;
  }

  .page-faq .faq-group__title {
    font-size: 23px;
  }

  .page-faq .qa__q {
    font-size: 19px;
  }

  .page-faq .page-faq__review {
    padding: 38px 40px 42px;
  }

  .page-faq .review__title {
    font-size: 28px;
  }
}

@media (min-width: 860px) {
  .page-faq .review-grid {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    gap: 34px;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 24px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--frame-h) + 22px);
    padding: 20px 0;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0 14px;
  }

  .page-faq .faq-index__link {
    padding: 9px 10px 9px 14px;
    white-space: normal;
    border-bottom: 0;
    border-left: 2px solid transparent;
    font-size: 13.5px;
  }

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

@media (min-width: 1200px) {
  .page-faq {
    --faq-index-w: 236px;
  }

  .page-faq .faq-group {
    padding: 36px 44px 16px;
  }

  .page-faq .page-faq__review {
    padding: 44px 48px 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__q,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .faq-index__link {
    transition: none;
  }
}