.page-faq {
  --faq-rule: rgba(201, 162, 39, 0.34);
  --faq-card-bg: rgba(18, 22, 15, 0.72);
  --faq-soft: rgba(201, 162, 39, 0.1);
  display: block;
  background-color: var(--c-ink);
  color: var(--c-cold);
}

/* ---------- 封面区 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(28px, 4.2vw, 52px) clamp(44px, 6vw, 80px);
  background:
    radial-gradient(130% 100% at 8% -12%, rgba(11, 43, 38, 0.96) 0%, rgba(18, 22, 15, 0) 64%),
    linear-gradient(155deg, #0B2B26 0%, #12160F 56%, #0E322B 100%);
  border-bottom: 3px solid var(--c-gold);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(201, 162, 39, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 162, 39, 0.07) 1px, transparent 1px);
  background-size: 58px 58px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.8), transparent 84%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.8), transparent 84%);
  pointer-events: none;
}

.page-faq .crumb {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-dim);
  margin-bottom: clamp(22px, 3.2vw, 38px);
}

.page-faq .crumb a {
  color: var(--c-gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .crumb a:hover,
.page-faq .crumb a:focus-visible {
  border-bottom-color: var(--c-gold);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 50px);
  align-items: end;
}

.page-faq h1 {
  font-family: var(--font-display);
  font-size: clamp(33px, 7vw, 60px);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.022em;
  color: var(--c-cold);
  margin: 14px 0 0;
  max-width: 16ch;
}

.page-faq .kicker {
  color: var(--c-neon);
}

.page-faq .faq-hero__lede {
  margin: clamp(16px, 2vw, 22px) 0 0;
  max-width: 48ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--c-dim);
}

.page-faq .faq-hero__hint {
  margin: 14px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--c-gold);
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--c-stone);
}

.page-faq .faq-hero__plate {
  margin: 0;
}

.page-faq .plate img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--c-gold);
  border-radius: var(--r-card);
  box-shadow: var(--shadow-hard);
  background-color: var(--c-teal);
}

.page-faq .faq-hero__plate img {
  aspect-ratio: 10 / 7;
}

.page-faq .faq-plate {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
}

.page-faq .faq-plate img {
  aspect-ratio: 2 / 1;
}

.page-faq .plate__cap {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--c-stone);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  padding-block: clamp(30px, 4.4vw, 64px) clamp(44px, 6vw, 84px);
}

.page-faq .faq-flow {
  min-width: 0;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-block: clamp(28px, 4.4vw, 52px);
  border-top: 2px solid var(--faq-rule);
}

.page-faq .faq-group:first-child {
  border-top: none;
  padding-top: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: clamp(14px, 2.4vw, 26px);
  margin-bottom: clamp(16px, 2.2vw, 24px);
}

.page-faq .faq-group__num {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--font-num);
  font-size: clamp(38px, 6.4vw, 66px);
  font-weight: 700;
  line-height: 0.82;
  letter-spacing: -0.04em;
  color: rgba(201, 162, 39, 0.46);
}

.page-faq .faq-group__head h2 {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 3.2vw, 30px);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.012em;
  color: var(--c-cold);
}

.page-faq .faq-group__note {
  grid-column: 2;
  grid-row: 2;
  margin: 8px 0 0;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-dim);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  border: 2px solid var(--c-stone);
  border-radius: var(--r-card);
  background: var(--faq-card-bg);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(201, 162, 39, 0.68);
}

.page-faq .faq-item[open] {
  border-color: var(--c-gold);
  background: rgba(11, 43, 38, 0.66);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--c-cold);
  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:hover {
  color: var(--c-gold);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--c-neon);
  outline-offset: 3px;
}

.page-faq .faq-item__mark {
  flex: 0 0 auto;
  width: 11px;
  height: 11px;
  margin-top: 7px;
  border: 2px solid var(--c-gold);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__mark {
  background-color: var(--c-gold);
  transform: rotate(135deg);
}

.page-faq .faq-item__text {
  min-width: 0;
}

.page-faq .faq-item__a {
  max-width: 64ch;
  padding: 2px 20px 18px 45px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--c-dim);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-item__a a {
  color: var(--c-neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 227, 208, 0.45);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  border-bottom-color: var(--c-neon);
}

.page-faq .faq-missing {
  display: inline-block;
  width: 30px;
  height: 15px;
  vertical-align: -3px;
  border: 1.5px solid var(--c-stone);
  background-color: rgba(94, 107, 87, 0.18);
  background-image: repeating-linear-gradient(135deg, transparent 0 5px, rgba(201, 162, 39, 0.62) 5px 7px);
}

/* ---------- 右侧索引 ---------- */
.page-faq .faq-index {
  display: none;
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-neon);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 7px 9px;
  font-size: 13.5px;
  line-height: 1.45;
  color: var(--c-dim);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-index__num {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-stone);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--c-cold);
  border-left-color: var(--c-gold);
  background-color: var(--faq-soft);
}

.page-faq .faq-index__list a:hover .faq-index__num,
.page-faq .faq-index__list a:focus-visible .faq-index__num {
  color: var(--c-gold);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-outro {
  padding-block: clamp(34px, 5vw, 64px) clamp(38px, 5.4vw, 70px);
  background:
    linear-gradient(180deg, rgba(18, 22, 15, 0.96), rgba(11, 43, 38, 0.94));
  border-top: 2px solid var(--faq-rule);
}

.page-faq .faq-outro__inner {
  max-width: var(--w-page);
}

.page-faq .faq-outro h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.014em;
  color: var(--c-cold);
}

.page-faq .faq-outro p {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--c-dim);
}

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

.page-faq .faq-band {
  height: 12px;
  background: linear-gradient(
    90deg,
    var(--c-gold) 0 16%,
    var(--c-brick) 16% 26%,
    var(--c-stone) 26% 34%,
    var(--c-teal) 34% 100%
  );
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-item > summary {
    padding: 18px 22px;
    font-size: 16.5px;
  }

  .page-faq .faq-item__a {
    padding: 2px 24px 20px 49px;
  }

  .page-faq .faq-item__mark {
    margin-top: 8px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-shell {
    grid-template-columns: minmax(0, 1fr) 236px;
    align-items: start;
  }

  .page-faq .faq-index {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 20px);
    padding: 20px 18px 18px;
    border: 2px solid var(--faq-rule);
    border-radius: var(--r-card);
    background: rgba(11, 43, 38, 0.62);
  }

  .page-faq .faq-group__head {
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__mark,
  .page-faq .faq-item > summary,
  .page-faq .faq-index__list a {
    transition: none;
  }
}