.page-faq {
  --faq-line: 1px solid rgba(143, 166, 184, 0.22);
  --faq-line-strong: 2px solid rgba(143, 166, 184, 0.3);
  background: var(--bd-ink);
  color: var(--bd-paper);
}

.page-faq img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.4rem, 4vw, 2.2rem) 0 clamp(2.2rem, 6vw, 3.6rem);
  border-bottom: 2px solid var(--bd-black);
  background:
    radial-gradient(72% 92% at 92% -6%, rgba(55, 242, 196, 0.18), transparent 62%),
    linear-gradient(168deg, #0e2a44 0%, #071a2b 58%);
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
}

.page-faq .bd-crumbs {
  margin-bottom: 1.4rem;
}

.page-faq .faq-hero__title {
  margin: 0.55rem 0 0;
  font-family: var(--bd-font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 8.4vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--bd-paper);
  max-width: 16ch;
}

.page-faq .faq-hero__lead {
  margin: 1.1rem 0 0;
  max-width: 44rem;
  font-size: 1rem;
  line-height: 1.62;
  color: var(--bd-soft);
}

.page-faq .faq-hero__panel {
  border-left: 3px solid var(--bd-signal);
  background: rgba(2, 6, 8, 0.42);
  padding: 1.1rem 1.2rem 1.25rem;
}

.page-faq .faq-hero__panel-title {
  margin: 0;
  font-family: var(--bd-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bd-signal);
}

.page-faq .faq-clock {
  list-style: none;
  margin: 0.95rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-faq .faq-clock li {
  display: grid;
  grid-template-columns: 4.6rem minmax(0, 1fr);
  gap: 0.75rem;
  align-items: baseline;
  padding-top: 0.85rem;
  border-top: var(--faq-line);
}

.page-faq .faq-clock li:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-clock__t {
  font-family: var(--bd-font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--bd-amber);
}

.page-faq .faq-clock__d {
  font-size: 0.86rem;
  line-height: 1.55;
  color: var(--bd-soft);
}

/* ---------- 主布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.2rem;
  padding-block: clamp(2.2rem, 6vw, 4rem) clamp(3rem, 7vw, 5rem);
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index__inner {
  display: grid;
  gap: 1.6rem;
}

.page-faq .faq-index__kicker {
  margin: 0 0 0.7rem;
  font-family: var(--bd-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bd-mist);
}

.page-faq .faq-index__nav {
  display: grid;
  gap: 0.15rem;
  border-top: var(--faq-line-strong);
  padding-top: 0.7rem;
}

.page-faq .faq-index__nav a {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.62rem 0.2rem 0.62rem 0.55rem;
  border-left: 3px solid transparent;
  color: var(--bd-paper);
  font-size: 0.95rem;
  text-decoration: none;
  transition: border-color 0.16s ease, background-color 0.16s ease, color 0.16s ease;
}

.page-faq .faq-index__nav a:hover,
.page-faq .faq-index__nav a:focus-visible {
  border-left-color: var(--bd-signal);
  background: rgba(55, 242, 196, 0.08);
  color: var(--bd-signal);
}

.page-faq .faq-index__num {
  font-family: var(--bd-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  color: var(--bd-signal-deep);
}

.page-faq .faq-index__nav a:hover .faq-index__num,
.page-faq .faq-index__nav a:focus-visible .faq-index__num {
  color: var(--bd-signal);
}

.page-faq .faq-index__links {
  border-top: var(--faq-line-strong);
  padding-top: 0.9rem;
}

.page-faq .faq-index__links a {
  display: block;
  padding: 0.6rem 0;
  border-bottom: var(--faq-line);
  color: var(--bd-paper);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: color 0.16s ease;
}

.page-faq .faq-index__links a span {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.76rem;
  font-weight: 400;
  color: var(--bd-mist);
}

.page-faq .faq-index__links a:hover,
.page-faq .faq-index__links a:focus-visible {
  color: var(--bd-signal);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  padding-bottom: 2.2rem;
}

.page-faq .faq-group + .faq-group {
  border-top: 3px solid rgba(143, 166, 184, 0.28);
  padding-top: 2.2rem;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  align-items: start;
  margin-bottom: 1.4rem;
}

.page-faq .faq-group__num {
  font-family: var(--bd-font-mono);
  font-size: clamp(1.8rem, 6vw, 2.6rem);
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--bd-signal);
  opacity: 0.55;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--bd-font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.6vw, 2rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--bd-paper);
}

.page-faq .faq-group__note {
  margin: 0.45rem 0 0;
  font-family: var(--bd-font-serif);
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--bd-mist);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border: 2px solid rgba(143, 166, 184, 0.26);
  background: rgba(14, 42, 68, 0.72);
  margin-bottom: 0.7rem;
  transition: border-color 0.16s ease, background-color 0.16s ease;
}

.page-faq .faq-item:hover {
  border-color: rgba(55, 242, 196, 0.5);
}

.page-faq .faq-item[open] {
  border-color: var(--bd-signal);
  background: rgba(6, 59, 58, 0.55);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.95rem 1rem;
  cursor: pointer;
  list-style: none;
  color: var(--bd-paper);
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.5;
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--bd-signal);
  outline-offset: 2px;
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  font-family: var(--bd-font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  padding-top: 0.28rem;
  color: var(--bd-signal-deep);
}

.page-faq .faq-item[open] .faq-item__num {
  color: var(--bd-signal);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
}

.page-faq .faq-item__mark {
  flex: 0 0 auto;
  width: 11px;
  height: 11px;
  margin-top: 0.42rem;
  margin-left: auto;
  border-right: 2px solid var(--bd-signal);
  border-bottom: 2px solid var(--bd-signal);
  transform: rotate(45deg);
  transition: transform 0.18s ease;
}

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

.page-faq .faq-item__body {
  padding: 0 1rem 1.1rem 2.55rem;
  border-top: var(--faq-line);
  margin-top: 0.15rem;
  padding-top: 0.85rem;
}

.page-faq .faq-item__body p {
  margin: 0 0 0.65rem;
  font-size: 0.92rem;
  line-height: 1.68;
  color: var(--bd-soft);
  max-width: 68ch;
}

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

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 1.1rem 0 1.3rem;
  border: 2px solid var(--bd-black);
  border-left: 5px solid var(--bd-signal);
  background: var(--bd-black);
  overflow: hidden;
}

.page-faq .faq-figure img {
  width: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-faq .faq-figure__cap {
  display: block;
  padding: 0.65rem 0.9rem;
  font-family: var(--bd-font-mono);
  font-size: 0.76rem;
  line-height: 1.5;
  color: var(--bd-mist);
  background: rgba(2, 6, 8, 0.86);
  border-top: 1px solid rgba(143, 166, 184, 0.22);
}

/* ---------- 结尾引导 ---------- */
.page-faq .faq-cta {
  margin-top: 1.6rem;
  border: 2px solid var(--bd-signal);
  background: rgba(6, 59, 58, 0.6);
  padding: 1.2rem 1.15rem;
}

.page-faq .faq-cta__text {
  margin: 0 0 1rem;
  font-family: var(--bd-font-serif);
  font-size: 1.02rem;
  line-height: 1.6;
  color: var(--bd-paper);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

/* ---------- 桌面 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.8fr);
    gap: 3rem;
  }

  .page-faq .faq-item summary {
    padding: 1.05rem 1.25rem;
    font-size: 1.02rem;
  }

  .page-faq .faq-item__body {
    padding: 0.95rem 1.5rem 1.25rem 3.3rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 3.4rem;
  }

  .page-faq .faq-index__inner {
    position: sticky;
    top: 1.6rem;
  }

  .page-faq .faq-group {
    padding-bottom: 2.8rem;
  }

  .page-faq .faq-group + .faq-group {
    padding-top: 2.8rem;
  }
}

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