.page-faq {
  --faq-indent: 40px;
  --faq-aside: 200px;
  --faq-gap: 18px;
  padding-bottom: 30px;
}

.page-faq [id] {
  scroll-margin-top: 110px;
}

.page-faq .crumb {
  padding-top: 26px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 32px 0 0;
  max-width: 74ch;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 16px;
  font-family: var(--font-accent);
  font-size: 13px;
  letter-spacing: 0.42em;
  color: var(--gold);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(40px, 9vw, 76px);
  line-height: 1.1;
  letter-spacing: 0.06em;
  color: var(--paper);
  text-shadow: 0 1px 0 rgba(200, 164, 92, 0.3);
}

.page-faq .faq-hero__title::after {
  content: "";
  display: block;
  width: 68px;
  height: 2px;
  margin-top: 22px;
  background: linear-gradient(90deg, var(--gold), rgba(200, 164, 92, 0));
}

.page-faq .faq-hero__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.95;
  color: var(--body-ink);
}

.page-faq .faq-banner {
  position: relative;
  margin: 34px 0 0;
}

.page-faq .faq-banner img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border: 1px solid var(--hair);
  border-radius: 2px;
  filter: saturate(0.85) contrast(1.04);
}

.page-faq .faq-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(14, 15, 16, 0) 42%, rgba(14, 15, 16, 0.78) 100%);
  pointer-events: none;
}

/* ---------- 分类问牌 ---------- */
.page-faq .faq-index {
  padding: 46px 0 6px;
}

.page-faq .faq-index__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--gold-light);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .plaque {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 140px;
  padding: 22px 54px 20px 20px;
  background: linear-gradient(155deg, #1B1D1F 0%, var(--lacquer) 62%, #131416 100%);
  border: 1px solid var(--hair);
  border-radius: 2px;
  text-decoration: none;
  color: inherit;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .plaque::before {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  top: -1px;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), rgba(200, 164, 92, 0));
  transform: scaleX(0.28);
  transform-origin: left center;
  transition: transform 220ms var(--ease);
}

.page-faq .plaque:hover,
.page-faq .plaque:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(200, 164, 92, 0.55);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.42);
}

.page-faq .plaque:hover::before,
.page-faq .plaque:focus-visible::before {
  transform: scaleX(1);
}

.page-faq .plaque__no {
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-faq .plaque__name {
  margin-top: auto;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.page-faq .plaque__count {
  margin-top: 6px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--mute);
  font-variant-numeric: tabular-nums;
}

.page-faq .plaque__side {
  position: absolute;
  right: 14px;
  top: 22px;
  writing-mode: vertical-rl;
  font-family: var(--font-accent);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--mute);
  opacity: 0.55;
  transition: opacity var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .plaque:hover .plaque__side,
.page-faq .plaque:focus-visible .plaque__side {
  opacity: 1;
  color: var(--gold-light);
}

/* ---------- 问答区块 ---------- */
.page-faq .qa-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 44px 0 10px;
  border-top: 1px solid var(--hair);
  margin-top: 34px;
}

.page-faq .qa-block__aside {
  padding-bottom: 14px;
}

.page-faq .qa-block__no {
  display: block;
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .qa-block__title {
  margin: 12px 0 10px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.page-faq .qa-block__note {
  margin: 0;
  font-family: var(--font-accent);
  font-size: 13px;
  line-height: 1.85;
  color: var(--mute);
}

.page-faq .qa-block__body {
  min-width: 0;
}

/* 问题条 */
.page-faq .qa {
  border-bottom: 1px solid var(--hair);
}

.page-faq .qa:first-child {
  border-top: 1px solid var(--hair);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: var(--faq-indent) minmax(0, 1fr) 16px;
  align-items: start;
  gap: 10px;
  padding: 17px 2px;
  cursor: pointer;
  list-style: none;
  transition: background-color var(--dur) var(--ease);
}

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

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

.page-faq .qa__q:hover {
  background: rgba(200, 164, 92, 0.045);
}

.page-faq .qa__no {
  padding-top: 4px;
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold-light);
}

.page-faq .qa__text {
  position: relative;
  font-size: 16px;
  line-height: 1.75;
  color: var(--paper);
}

.page-faq .qa__text::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 100%;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 220ms var(--ease);
}

.page-faq .qa__q:hover .qa__text::after,
.page-faq .qa__q:focus-visible .qa__text::after {
  transform: scaleX(1);
}

.page-faq .qa__mark {
  position: relative;
  justify-self: end;
  width: 14px;
  height: 14px;
  margin-top: 7px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--gold);
  transition: transform 200ms var(--ease), opacity 200ms var(--ease);
}

.page-faq .qa__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1.25px;
}

.page-faq .qa__mark::after {
  left: 6px;
  top: 0;
  width: 1.25px;
  height: 14px;
}

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

.page-faq .qa[open] .qa__q {
  background: rgba(200, 164, 92, 0.07);
}

/* 答案 */
.page-faq .qa__answer {
  margin: 0 0 20px;
  padding: 16px 16px 16px 18px;
  background: var(--paper);
  border-right: 2px solid var(--gold);
  border-radius: 2px;
}

.page-faq .qa__answer p {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--brown);
}

.page-faq .qa__more {
  display: inline-block;
  margin-top: 12px;
  padding-bottom: 2px;
  font-family: var(--font-accent);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cinnabar);
  text-decoration: none;
  border-bottom: 1px solid rgba(181, 52, 43, 0.45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .qa__more:hover,
.page-faq .qa__more:focus-visible {
  color: var(--brown);
  border-color: var(--brown);
}

/* 到馆配图 */
.page-faq .qa-block__figure {
  margin: 26px 0 0;
}

.page-faq .qa-block__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid var(--hair);
  border-radius: 2px;
  filter: saturate(0.86);
}

.page-faq .qa-block__figure figcaption {
  margin-top: 10px;
  font-family: var(--font-accent);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--mute);
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-faq {
    --faq-indent: 46px;
  }

  .page-faq .faq-hero__lead {
    font-size: 17px;
  }

  .page-faq .faq-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .qa__q {
    gap: 14px;
    padding: 19px 4px;
  }

  .page-faq .qa__answer {
    margin-left: var(--faq-indent);
    padding: 18px 20px 18px 22px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq {
    --faq-aside: 210px;
  }

  .page-faq .faq-index__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .qa-block {
    grid-template-columns: var(--faq-aside) minmax(0, 1fr);
    gap: 46px;
    padding: 52px 0 16px;
    margin-top: 40px;
  }

  .page-faq .qa-block__aside {
    position: sticky;
    top: 104px;
    align-self: start;
    padding-bottom: 0;
    border-right: 1px solid var(--hair);
    padding-right: 26px;
  }

  .page-faq .qa-block__no {
    font-size: 32px;
  }

  .page-faq .qa__text {
    font-size: 16.5px;
  }
}

@media (min-width: 1120px) {
  .page-faq .qa-block__figure img {
    aspect-ratio: 21 / 9;
  }
}

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

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