.page-faq {
  --faq-card: rgba(18, 22, 28, .68);
  --faq-card-open: rgba(18, 22, 28, .94);
  --faq-gold-soft: rgba(232, 178, 74, .12);
  --faq-red-soft: rgba(200, 16, 46, .14);
  --faq-gap: 22px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding-top: 22px;
  padding-bottom: 40px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -18%;
  left: -22%;
  width: 118%;
  height: 128%;
  background: linear-gradient(118deg, var(--c-red) 0%, var(--c-crimson) 48%, rgba(124, 13, 34, 0) 76%);
  clip-path: polygon(0 0, 100% 0, 54% 100%, 0 74%);
  opacity: .3;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  right: -6%;
  bottom: -14%;
  width: 46%;
  height: 60%;
  border-radius: 50%;
  border: 1px solid var(--c-line-gold);
  opacity: .5;
  pointer-events: none;
}

.page-faq .faq-hero-inner {
  position: relative;
}

.page-faq .faq-hero .display-xl {
  margin: 16px 0 0;
  max-width: 14ch;
  line-height: 1.02;
  letter-spacing: -.02em;
}

.page-faq .faq-lede {
  max-width: 58ch;
  margin-top: 20px;
}

.page-faq .faq-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-faq .chip--static {
  cursor: default;
  pointer-events: none;
  border-color: var(--c-line-gold);
  color: var(--c-paper);
  background: var(--faq-gold-soft);
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  padding-top: 12px;
  padding-bottom: 64px;
}

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

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  border: 1px solid var(--c-line-soft);
  border-radius: var(--radius-lg);
  background: var(--c-surface-2);
  padding: 18px 14px;
}

.page-faq .faq-index-title {
  margin: 0 0 12px;
  padding-left: 12px;
  font-family: var(--font-data);
  font-size: .6875rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-faq .faq-index-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-index-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--c-line);
  border-radius: var(--pill);
  color: var(--c-slate);
  font-size: .875rem;
  white-space: nowrap;
  text-decoration: none;
  transition: color .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-index-num {
  font-family: var(--font-data);
  font-size: .6875rem;
  letter-spacing: .1em;
  color: var(--c-slate);
  transition: color .18s var(--ease);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  color: var(--c-paper);
  border-color: var(--c-line-gold);
  background: var(--faq-gold-soft);
}

.page-faq .faq-index-link.is-current {
  color: var(--c-paper);
  border-color: transparent;
  background: var(--c-red);
  box-shadow: var(--shadow-red);
}

.page-faq .faq-index-link.is-current .faq-index-num {
  color: var(--c-gold);
}

.page-faq .faq-index-foot {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--c-line-soft);
}

.page-faq .faq-index-foot p {
  margin: 0 0 10px;
  font-size: .875rem;
  color: var(--c-slate);
}

/* ---------- 问答流 ---------- */
.page-faq .faq-stream {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 6px;
}

.page-faq .faq-group-num {
  flex: 0 0 auto;
  font-family: var(--font-data);
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: .04em;
  color: var(--c-red);
  text-shadow: 0 0 18px rgba(200, 16, 46, .5);
}

.page-faq .faq-group-head .section-title {
  margin: 0;
}

.page-faq .faq-group-note {
  margin: 0 0 18px;
  padding-left: 2px;
  font-size: .9375rem;
  color: var(--c-slate);
}

.page-faq .rule {
  display: block;
  margin: 44px 0;
}

/* ---------- 手风琴条目 ---------- */
.page-faq .faq-item {
  border-radius: var(--radius-md);
  background: var(--faq-card);
  border: 1px solid var(--c-line-soft);
  margin-bottom: 12px;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-item[open] {
  background: var(--faq-card-open);
  border-color: var(--c-line-gold);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  border-radius: var(--radius-md);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item > summary:hover .faq-q,
.page-faq .faq-item > summary:focus-visible .faq-q {
  color: var(--c-gold);
}

.page-faq .faq-sign {
  position: relative;
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  margin-top: 1px;
  border-radius: 50%;
  border: 1px solid var(--c-line-gold);
  transition: background .2s var(--ease);
}

.page-faq .faq-sign::before,
.page-faq .faq-sign::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--c-gold);
  border-radius: 2px;
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.page-faq .faq-sign::before {
  width: 11px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-sign::after {
  width: 2px;
  height: 11px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item[open] .faq-sign {
  background: var(--faq-gold-soft);
}

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

.page-faq .faq-q {
  font-size: 1.0625rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--c-paper);
  transition: color .18s var(--ease);
}

.page-faq .faq-answer {
  position: relative;
  margin: 0 18px 4px 58px;
  padding: 4px 0 16px;
  border-top: 1px solid var(--c-line-soft);
  animation: faq-open .24s var(--ease) both;
}

.page-faq .faq-answer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 42px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-gold), rgba(232, 178, 74, 0));
}

.page-faq .faq-answer p {
  margin: 14px 0 0;
  font-size: .9688rem;
  line-height: 1.78;
  color: #D8D2C8;
}

@keyframes faq-open {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 20px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--c-line-gold);
  background: var(--c-board);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 12 / 7;
}

.page-faq .faq-figure--tall img {
  aspect-ratio: 3 / 2;
}

.page-faq .faq-figure .media-caption {
  display: block;
  padding: 10px 14px;
  font-family: var(--font-data);
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--c-slate);
  border-top: 1px solid var(--c-line-soft);
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-group-num {
    font-size: 2rem;
  }

  .page-faq .faq-item > summary {
    padding: 20px 24px;
  }

  .page-faq .faq-answer {
    margin-left: 64px;
    margin-right: 24px;
  }
}

/* ---------- 桌面：左索引常驻 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding-top: 40px;
    padding-bottom: 64px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    padding: 22px 16px;
  }

  .page-faq .faq-index-nav {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index-link {
    width: 100%;
    border-color: transparent;
    border-radius: var(--pill);
    padding: 10px 14px;
    white-space: normal;
  }

  .page-faq .faq-index-link:hover,
  .page-faq .faq-index-link:focus-visible {
    border-color: transparent;
  }

  .page-faq .faq-group-num {
    font-size: 2.4rem;
  }
}

/* ---------- 降级动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-answer {
    animation: none;
  }

  .page-faq .faq-sign::before,
  .page-faq .faq-sign::after,
  .page-faq .faq-item,
  .page-faq .faq-index-link {
    transition: none;
  }
}