.page-faq {
  --faq-line: rgba(201, 214, 197, 0.15);
  --faq-line-soft: rgba(201, 214, 197, 0.08);
  --faq-lime-soft: rgba(216, 255, 62, 0.42);
  background: var(--ink);
  color: var(--stone);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-top: clamp(1.25rem, 3.5vw, 2.5rem);
  padding-bottom: clamp(1.5rem, 4vw, 3rem);
  background:
    radial-gradient(130% 100% at 6% -20%, rgba(124, 255, 203, 0.14), transparent 60%),
    radial-gradient(90% 80% at 100% 0%, rgba(90, 77, 255, 0.16), transparent 62%),
    linear-gradient(168deg, var(--ink-900) 0%, var(--deep) 55%, var(--night) 100%);
  border-bottom: 1px solid var(--faq-line);
  overflow: hidden;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  align-items: end;
}

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

.page-faq .faq-hero .breadcrumb { margin-bottom: 1.1rem; }

.page-faq .faq-hero h1 {
  margin: 0.55rem 0 1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5.6vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--mist);
}

.page-faq .faq-hero h1 .hl {
  display: inline-block;
  color: var(--lime);
  transform: skewX(-3deg);
  transform-origin: left center;
}

.page-faq .faq-hero__lede {
  max-width: 38rem;
  margin: 0 0 1.5rem;
  font-size: clamp(0.94rem, 2.4vw, 1.04rem);
  line-height: 1.82;
  color: var(--stone);
}

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

.page-faq .faq-hero__stats {
  padding: 1rem 1.1rem 1.15rem;
  border-radius: var(--radius);
}

.page-faq .faq-stats {
  display: grid;
  margin: 0;
}

.page-faq .faq-stats__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.62rem 0;
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-stats__row:last-child { border-bottom: 0; }

.page-faq .faq-stats dt {
  font-size: 0.8rem;
  color: var(--stone);
  letter-spacing: 0.01em;
}

.page-faq .faq-stats dd {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--mist);
  white-space: nowrap;
}

.page-faq .faq-stats dd.mono {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--mint);
}

.page-faq .faq-stats dd .mono {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--lime);
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__figure {
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  border-radius: var(--radius);
  overflow: hidden;
}

/* ---------- 主体分区 ---------- */
.page-faq .faq-body {
  padding-top: clamp(1.75rem, 4.5vw, 3rem);
  padding-bottom: clamp(3rem, 7vw, 5rem);
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.25rem);
  align-items: start;
}

/* 索引 */
.page-faq .faq-index {
  border-top: 1px solid var(--faq-line);
  padding-top: 0.85rem;
}

.page-faq .faq-index > .kicker {
  display: block;
  margin: 0 0 0.6rem;
  color: var(--stone);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0 0 0.35rem;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-index__list > li { flex: 0 0 auto; }

.page-faq .faq-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 44px;
  padding: 0 0.85rem;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  color: var(--stone);
  font-size: 0.84rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color 140ms var(--ease), background-color 140ms var(--ease), border-color 140ms var(--ease);
}

.page-faq .faq-index__list a .mono {
  font-size: 0.72rem;
  color: var(--mint);
  letter-spacing: 0.03em;
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--ink);
  background: var(--lime);
  border-color: var(--lime);
}

.page-faq .faq-index__list a:hover .mono,
.page-faq .faq-index__list a:focus-visible .mono {
  color: var(--ink);
}

/* 内容区 */
.page-faq .faq-main { min-width: 0; }

.page-faq .faq-sec {
  padding-block: clamp(1.5rem, 3.8vw, 2.4rem);
  border-top: 1px solid var(--faq-line-soft);
  scroll-margin-top: 5.5rem;
}

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

.page-faq .faq-sec__head {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  margin-bottom: 0.85rem;
}

.page-faq .faq-sec__head > div { min-width: 0; }

.page-faq .faq-sec__num {
  flex: 0 0 auto;
  font-size: clamp(1.45rem, 3.6vw, 2.05rem);
  line-height: 1;
  letter-spacing: -0.05em;
  color: var(--faq-lime-soft);
}

.page-faq .faq-sec h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.18rem, 3vw, 1.55rem);
  letter-spacing: -0.015em;
  color: var(--mist);
}

.page-faq .faq-sec__sub {
  margin: 0.3rem 0 0;
  font-size: 0.845rem;
  line-height: 1.65;
  color: var(--stone);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 0.6rem;
  min-height: 48px;
  padding: 0.95rem 0;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-item__idx {
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--mint);
  min-width: 1.6rem;
}

.page-faq .faq-item__q {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(0.95rem, 2.4vw, 1.04rem);
  line-height: 1.55;
  letter-spacing: -0.01em;
  color: var(--mist);
  transition: color 140ms var(--ease);
}

.page-faq .faq-item > summary:hover .faq-item__q { color: var(--lime); }

.page-faq .faq-item > summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--lime);
}

.page-faq .faq-item[open] > summary::after { content: "–"; }

.page-faq .faq-item__a {
  padding: 0 0 1.15rem calc(1.6rem + 0.6rem);
  font-size: 0.915rem;
  line-height: 1.78;
  color: var(--stone);
}

.page-faq .faq-item__a p { margin: 0 0 0.6rem; }
.page-faq .faq-item__a p:last-child { margin-bottom: 0; }

.page-faq .faq-item__a a {
  color: var(--mint);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover { color: var(--lime); }

/* 步骤列表 */
.page-faq .faq-steps {
  display: grid;
  gap: 0.45rem;
  margin: 0.7rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-step;
}

.page-faq .faq-steps > li {
  counter-increment: faq-step;
  display: grid;
  grid-template-columns: 1.75rem minmax(0, 1fr);
  gap: 0.5rem;
  align-items: baseline;
}

.page-faq .faq-steps > li::before {
  content: counter(faq-step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  color: var(--lime);
}

/* ---------- 导出章节（夜场蓝块） ---------- */
.page-faq .faq-sec--night {
  margin-block: clamp(1.25rem, 3.5vw, 2rem);
  padding: clamp(1.15rem, 3.5vw, 2rem);
  border-top: 1px solid rgba(124, 255, 203, 0.18);
  border-radius: var(--radius);
  background: linear-gradient(158deg, rgba(18, 59, 74, 0.95) 0%, rgba(11, 31, 51, 0.88) 100%);
  box-shadow: inset 0 0 0 1px rgba(124, 255, 203, 0.12);
}

.page-faq .faq-sec--night .faq-item { border-bottom-color: rgba(124, 255, 203, 0.18); }
.page-faq .faq-sec--night .faq-item:last-of-type { border-bottom: 0; }
.page-faq .faq-sec--night .faq-sec__sub { color: rgba(243, 247, 238, 0.78); }

.page-faq .faq-export-fig {
  margin: 1rem 0 0;
  border-radius: var(--radius);
  overflow: hidden;
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-contact {
  padding: clamp(1.1rem, 3vw, 1.75rem);
  border-radius: var(--radius);
}

.page-faq .faq-contact h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1rem, 2.6vw, 1.15rem);
  letter-spacing: -0.01em;
  color: var(--deep);
}

.page-faq .faq-contact__list {
  display: grid;
  gap: 0.55rem;
  margin: 0.85rem 0 1rem;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact__list li {
  display: grid;
  grid-template-columns: 3.4rem minmax(0, 1fr);
  gap: 0.6rem;
  align-items: baseline;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--deep);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__list .mono {
  font-size: 0.72rem;
  letter-spacing: 0.09em;
  color: rgba(14, 42, 38, 0.6);
}

.page-faq .faq-contact p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.72;
  color: rgba(14, 42, 38, 0.82);
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.1rem;
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 419px) {
  .page-faq .faq-item__a {
    padding-left: 0;
    padding-right: 0;
  }
  .page-faq .faq-hero__actions .btn { width: 100%; }
}

/* ---------- 平板 / 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.58fr);
    gap: clamp(2rem, 4vw, 3.25rem);
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 232px) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 5.5rem;
    border-top: 0;
    padding-top: 0;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-index__list > li + li {
    border-top: 1px solid var(--faq-line-soft);
  }

  .page-faq .faq-index__list a {
    width: 100%;
    min-height: 44px;
    padding: 0.72rem 0;
    border: 0;
    border-radius: 0;
    justify-content: flex-start;
    font-size: 0.86rem;
  }

  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    background: transparent;
    color: var(--lime);
  }

  .page-faq .faq-index__list a:hover .mono,
  .page-faq .faq-index__list a:focus-visible .mono {
    color: var(--lime);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero h1 .hl { transform: none; }
  .page-faq .faq-index__list a,
  .page-faq .faq-item__q {
    transition: none;
  }
}
<<<END>>>