.page-faq {
  --faq-line: rgba(242, 236, 227, .13);
  --faq-line-strong: rgba(242, 236, 227, .3);
  --faq-answer: rgba(242, 236, 227, .055);
  --faq-anchor: 108px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  padding: clamp(84px, 11vw, 124px) 0 clamp(56px, 8vw, 112px);
}

.page-faq .crumbs {
  margin-bottom: clamp(18px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: end;
}

.page-faq .faq-hero__media {
  display: block;
  margin: 0;
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: var(--ink-2);
}

.page-faq .faq-hero__media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  filter: saturate(.72) contrast(1.06) brightness(.84);
}

.page-faq .faq-hero__body {
  display: grid;
  gap: 14px;
  align-content: end;
  min-width: 0;
}

.page-faq .faq-hero__title {
  margin: 0;
  font-size: clamp(2.6rem, 9vw, 5.4rem);
  font-weight: 900;
  line-height: .96;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 42ch;
  color: var(--paper);
}

.page-faq .faq-hero__meta {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-top: 16px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-hero__count {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  line-height: .9;
  letter-spacing: -.04em;
  color: var(--gold);
}

.page-faq .faq-hero__meta-text {
  font-size: .875rem;
  letter-spacing: .04em;
  color: var(--mist);
}

/* ---------- 分组索引条 ---------- */
.page-faq .faq-index {
  position: sticky;
  top: var(--faq-anchor);
  z-index: 4;
  margin-bottom: clamp(36px, 5vw, 64px);
  background: rgba(18, 16, 15, .84);
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 12px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-index__link {
  display: inline-block;
  white-space: nowrap;
  padding: 7px 15px;
  border: 1px solid var(--faq-line-strong);
  border-radius: var(--radius-pill);
  font-size: .875rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--paper);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(63, 224, 206, .08);
}

/* ---------- 分组 ---------- */
.page-faq .faq-groups {
  display: grid;
  gap: clamp(40px, 6vw, 76px);
}

.page-faq .faq-group {
  scroll-margin-top: var(--faq-anchor);
  min-width: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
  align-items: baseline;
  padding-top: 16px;
  border-top: 2px solid var(--chu);
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.4rem, 3vw, 2rem);
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--chu);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.5rem, 3.6vw, 2.25rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 0;
  font-size: .875rem;
  letter-spacing: .06em;
  color: var(--mist);
}

/* ---------- 折页 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
  margin-top: clamp(18px, 2.5vw, 26px);
  min-width: 0;
}

.page-faq .faq-item {
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--faq-line);
  background: rgba(242, 236, 227, .018);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
  background: rgba(242, 236, 227, .035);
}

.page-faq .faq-item[open] .faq-q {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: clamp(14px, 2vw, 18px) clamp(14px, 2vw, 20px);
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .faq-q__no {
  font-family: var(--font-mono);
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-faq .faq-q__text {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-q:hover .faq-q__text,
.page-faq .faq-item[open] .faq-q__text {
  color: var(--white);
}

.page-faq .faq-q__mark {
  position: relative;
  width: 18px;
  height: 18px;
  flex: none;
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--mist);
  transform: translate(-50%, -50%);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .faq-q__mark::before {
  width: 14px;
  height: 2px;
}

.page-faq .faq-q__mark::after {
  width: 2px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-q__mark::before {
  background: var(--cyan);
}

.page-faq .faq-item[open] .faq-q__mark::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .faq-a {
  padding: clamp(14px, 2vw, 20px) clamp(14px, 2vw, 20px) clamp(16px, 2.4vw, 22px);
  background: var(--faq-answer);
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 64ch;
  font-size: .9375rem;
  line-height: 1.9;
  color: var(--paper);
}

.page-faq .faq-a p + p {
  margin-top: 10px;
}

.page-faq .faq-link {
  display: inline-block;
  margin-top: 12px;
  padding-bottom: 2px;
  font-size: .875rem;
  font-weight: 600;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 224, 206, .45);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

/* ---------- 图文分组 ---------- */
.page-faq .faq-group__body {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  min-width: 0;
}

.page-faq .faq-group__media {
  display: block;
  margin: 0;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: var(--ink-2);
}

.page-faq .faq-group__media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  filter: saturate(.7) contrast(1.06) brightness(.84);
}

/* ---------- 兜底引导 ---------- */
.page-faq .faq-help {
  position: relative;
  margin-top: clamp(48px, 7vw, 88px);
  scroll-margin-top: var(--faq-anchor);
  padding: clamp(24px, 4vw, 48px);
  background: var(--teal);
  border: 1px solid rgba(63, 224, 206, .22);
  overflow: hidden;
}

.page-faq .faq-help::after {
  content: "";
  position: absolute;
  right: -90px;
  bottom: -90px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(63, 224, 206, .22), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-help__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-faq .faq-help__title {
  margin: 10px 0 0;
  font-size: clamp(1.5rem, 4vw, 2.35rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .faq-help__text {
  margin: 14px 0 22px;
  max-width: 44ch;
  font-size: .9375rem;
  line-height: 1.9;
  color: var(--paper);
}

.page-faq .faq-help__list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: rgba(242, 236, 227, .14);
  border: 1px solid rgba(242, 236, 227, .14);
}

.page-faq .faq-help__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 14px 16px;
  background: var(--teal);
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--paper);
}

.page-faq .faq-help__list span {
  font-family: var(--font-mono);
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--gold);
}

/* ---------- 响应式 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-faq .faq-group--split .faq-group__body {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
    align-items: start;
  }

  .page-faq .faq-group__media {
    margin-top: clamp(18px, 2.5vw, 26px);
  }

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-q {
    gap: 10px;
    padding: 14px 12px;
  }

  .page-faq .faq-q__text {
    font-size: .9375rem;
  }

  .page-faq .faq-a {
    padding: 12px 12px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item,
  .page-faq .faq-q__text,
  .page-faq .faq-q__mark::before,
  .page-faq .faq-q__mark::after,
  .page-faq .faq-link {
    transition: none;
  }
}