.page-faq {
  --faq-line: #1B2740;
  --faq-line-soft: rgba(27, 39, 64, .55);
  --faq-panel: rgba(14, 22, 38, .78);
  --faq-glow-gold: rgba(242, 184, 75, .16);
  --faq-glow-cyan: rgba(79, 209, 197, .14);
  background-color: var(--ink);
  color: var(--paper);
  overflow-wrap: break-word;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding: 18px 0 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(26px, 5vw, 52px) 0 clamp(34px, 6vw, 72px);
  border-bottom: 1px solid var(--faq-line);
  background:
    radial-gradient(120% 90% at 84% 0%, var(--faq-glow-gold), transparent 56%),
    radial-gradient(100% 80% at 4% 96%, var(--faq-glow-cyan), transparent 58%),
    linear-gradient(180deg, #070B14 0%, #0E1626 58%, #070B14 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1.4px 1.4px at 12% 22%, rgba(245, 247, 250, .5), transparent),
    radial-gradient(1.2px 1.2px at 68% 10%, rgba(245, 247, 250, .34), transparent),
    radial-gradient(1.6px 1.6px at 89% 62%, rgba(242, 184, 75, .42), transparent),
    radial-gradient(1.1px 1.1px at 33% 80%, rgba(79, 209, 197, .42), transparent),
    radial-gradient(1.3px 1.3px at 53% 44%, rgba(245, 247, 250, .26), transparent);
  opacity: .85;
}

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

.page-faq .faq-hero-copy {
  min-width: 0;
}

.page-faq .faq-title {
  margin: 16px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(36px, 7.4vw, 82px);
  line-height: 1.03;
  letter-spacing: -.022em;
  color: var(--paper);
}

.page-faq .faq-lede {
  margin: 20px 0 0;
  max-width: 60ch;
  color: var(--silver);
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.8;
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero-figure {
  margin: 0;
  border: 1px solid var(--faq-line);
  background: linear-gradient(160deg, rgba(18, 59, 54, .42), rgba(7, 11, 20, .9));
}

.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-faq .faq-hero-stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(30px, 5vw, 56px) 0 0;
  padding: 0;
  list-style: none;
  background-color: var(--faq-line);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 16px 14px;
  background-color: rgba(14, 22, 38, .82);
}

.page-faq .faq-stat-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(20px, 2.6vw, 30px);
  font-weight: 600;
  color: var(--gold);
  letter-spacing: -.01em;
}

.page-faq .faq-stat-label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--silver);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  padding-block: clamp(40px, 7vw, 88px);
}

.page-faq .faq-index {
  display: none;
}

.page-faq .faq-index-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--silver);
}

.page-faq .faq-index-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index-link {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 0;
  border-bottom: 1px solid var(--faq-line-soft);
  color: var(--silver);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color .2s ease, padding-left .2s ease;
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  color: var(--paper);
  padding-left: 6px;
}

.page-faq .faq-index-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-faq .faq-stack {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(46px, 7vw, 84px);
  min-width: 0;
}

/* ---------- 分组标题 ---------- */
.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: 104px;
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  align-items: start;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-group-num {
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.25;
  letter-spacing: -.012em;
  color: var(--paper);
}

.page-faq .faq-group-lede {
  grid-column: 2;
  margin: 6px 0 0;
  max-width: 62ch;
  color: var(--silver);
  font-size: 15px;
  line-height: 1.72;
}

/* ---------- 组内配图 ---------- */
.page-faq .faq-figure {
  margin: 26px 0 4px;
  border: 1px solid var(--faq-line);
  background: linear-gradient(150deg, rgba(18, 59, 54, .34), rgba(7, 11, 20, .92));
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 问答抽屉 ---------- */
.page-faq .faq-items {
  margin-top: 6px;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-line-soft);
  transition: background .24s ease;
}

.page-faq .faq-item[open] {
  background: linear-gradient(90deg, rgba(242, 184, 75, .055), transparent 46%);
}

.page-faq .faq-item > summary {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  justify-content: space-between;
  padding: 20px 4px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.55;
  color: var(--paper);
  transition: color .2s ease;
}

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

.page-faq .faq-item > summary::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 8px;
  border-right: 1.5px solid var(--gold);
  border-bottom: 1.5px solid var(--gold);
  transform: rotate(45deg);
  transition: transform .24s ease;
}

.page-faq .faq-item[open] > summary::after {
  transform: rotate(-135deg);
}

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

.page-faq .faq-a {
  max-width: 66ch;
  padding: 0 4px 24px;
  color: var(--silver);
  font-size: 15.5px;
  line-height: 1.82;
}

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

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

.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 209, 197, .4);
  transition: border-color .2s ease, color .2s ease;
}

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

/* ---------- 收尾 ---------- */
.page-faq .faq-outro {
  border-top: 1px solid var(--faq-line);
  padding: clamp(38px, 6vw, 76px) 0 clamp(52px, 8vw, 100px);
  background:
    radial-gradient(80% 130% at 10% 0%, rgba(79, 209, 197, .1), transparent 62%),
    radial-gradient(70% 120% at 92% 100%, rgba(242, 184, 75, .08), transparent 60%),
    linear-gradient(180deg, #070B14 0%, #0E1626 100%);
}

.page-faq .faq-outro-inner {
  min-width: 0;
}

.page-faq .faq-outro-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(24px, 3.8vw, 40px);
  line-height: 1.22;
  letter-spacing: -.014em;
  color: var(--paper);
}

.page-faq .faq-outro-text {
  margin: 16px 0 0;
  max-width: 64ch;
  color: var(--silver);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .faq-outro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 媒体查询 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-stat {
    padding: 20px 18px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-faq .faq-hero-figure img {
    aspect-ratio: 4 / 3;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 218px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    display: block;
    position: sticky;
    top: 104px;
    padding-left: 18px;
    border-left: 1px solid var(--faq-line);
  }
}

@media (min-width: 1240px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 248px) minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item > summary::after,
  .page-faq .faq-index-link,
  .page-faq .faq-item > summary {
    transition: none;
  }
}