.page-faq {
  --faq-sticky-top: calc(var(--header-h) + 24px);
  --faq-soft: rgba(183, 195, 204, 0.06);
  --faq-soft-strong: rgba(183, 195, 204, 0.11);
  color: var(--text);
  background: var(--bg);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(18px, 3vw, 32px) clamp(28px, 5vw, 56px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -26%;
  right: -12%;
  width: min(620px, 78vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(53, 230, 208, 0.18), rgba(53, 230, 208, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-hero .breadcrumbs {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}

.page-faq .faq-hero__copy {
  position: relative;
}

.page-faq .faq-hero__copy .h-display {
  margin-block: 14px 18px;
  letter-spacing: 0.01em;
}

.page-faq .faq-hero__copy .lede {
  color: var(--mist);
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--faq-soft);
  color: var(--text);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--line-strong);
  color: var(--cyan);
  background: rgba(53, 230, 208, 0.08);
}

.page-faq .faq-hero__figure {
  margin: 0;
}

.page-faq .faq-hero__figure .figure__media {
  aspect-ratio: 10 / 7;
  overflow: hidden;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: linear-gradient(140deg, var(--ink-800), var(--ink-900) 70%);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .figure__caption {
  margin-top: 10px;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  line-height: 1.6;
}

/* ---------- 分类索引条 ---------- */
.page-faq .faq-index {
  padding-block: clamp(6px, 1.5vw, 14px) clamp(18px, 3vw, 30px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--ink-800);
}

.page-faq .faq-index__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding-top: clamp(14px, 2vw, 20px);
}

.page-faq .faq-index__item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  background: var(--faq-soft);
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-faq .faq-index__item:hover,
.page-faq .faq-index__item:focus-visible {
  border-color: var(--line-strong);
  background: rgba(53, 230, 208, 0.07);
  transform: translateY(-2px);
}

.page-faq .faq-index__num,
.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq .faq-index__count {
  color: var(--mist);
}

.page-faq .faq-index__name {
  font-size: 15px;
  line-height: 1.45;
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  padding-block: clamp(28px, 4vw, 52px) clamp(36px, 5vw, 64px);
}

.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(24px, 3.5vw, 40px);
  align-items: start;
}

.page-faq .faq-nav {
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-800);
}

.page-faq .faq-nav__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-nav__list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-nav__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--r-sm);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  background: rgba(53, 230, 208, 0.09);
  color: var(--cyan);
}

.page-faq .faq-nav__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .faq-nav__all {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--orange);
  font-size: 13px;
  text-decoration: none;
}

.page-faq .faq-nav__all:hover,
.page-faq .faq-nav__all:focus-visible {
  color: var(--cyan-soft);
}

/* ---------- 分组 ---------- */
.page-faq .qa-group {
  padding-bottom: clamp(30px, 4vw, 46px);
  margin-bottom: clamp(30px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .qa-group:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .qa-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
}

.page-faq .qa-group__head .h-section {
  margin: 0;
}

.page-faq .qa-group__count {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  padding: 3px 9px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-pill);
}

.page-faq .qa-group__intro {
  margin-top: 10px;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-mobile-figure {
  margin: clamp(18px, 3vw, 26px) 0 clamp(18px, 3vw, 26px);
}

.page-faq .faq-mobile-figure .figure__media {
  aspect-ratio: 4 / 5;
  max-width: 320px;
  overflow: hidden;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--ink-800), var(--ink-900));
}

.page-faq .faq-mobile-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 问题卡 ---------- */
.page-faq .qa-list {
  display: grid;
  gap: 8px;
  margin-top: clamp(16px, 2.5vw, 24px);
}

.page-faq .qa-item {
  border-left: 2px solid transparent;
  border-radius: var(--r-sm);
  background: var(--faq-soft);
  transition: background-color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .qa-item:hover {
  background: var(--faq-soft-strong);
}

.page-faq .qa-item[open] {
  border-left-color: var(--cyan);
  background: var(--ink-800);
}

.page-faq .qa-item > summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: 10px;
  padding: 14px 14px;
  cursor: pointer;
  list-style: none;
  border-radius: var(--r-sm);
}

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

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

.page-faq .qa-item__num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .qa-q {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
}

.page-faq .qa-sign {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  flex: none;
}

.page-faq .qa-sign::before,
.page-faq .qa-sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  border-radius: 1px;
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

.page-faq .qa-sign::before {
  top: 9px;
  left: 3px;
  right: 3px;
  height: 2px;
}

.page-faq .qa-sign::after {
  top: 3px;
  bottom: 3px;
  left: 9px;
  width: 2px;
}

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

.page-faq .qa-a {
  padding: 0 14px 18px 14px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

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

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

.page-faq .qa-a__lead {
  padding-left: 12px;
  border-left: 2px solid var(--line-warm);
  color: var(--text);
}

.page-faq .qa-steps {
  counter-reset: qa-step;
  display: grid;
  gap: 8px;
  margin: 12px 0 10px;
  padding: 0;
  list-style: none;
}

.page-faq .qa-steps li {
  counter-increment: qa-step;
  position: relative;
  padding-left: 30px;
}

.page-faq .qa-steps li::before {
  content: counter(qa-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.15em;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .qa-links {
  margin-top: 10px;
}

.page-faq .qa-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 230, 208, 0.35);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .qa-link::after {
  content: "→";
  font-size: 12px;
}

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

/* ---------- 结尾 CTA ---------- */
.page-faq .faq-cta {
  padding-block: clamp(32px, 5vw, 60px);
  background: linear-gradient(180deg, var(--ink-800), var(--ink-900));
  border-top: 1px solid var(--line);
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.page-faq .faq-cta__copy .h-section {
  margin-block: 10px 12px;
}

.page-faq .faq-cta__copy p {
  color: var(--mist);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-index__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .page-faq .qa-item > summary {
    padding: 16px 18px;
  }

  .page-faq .qa-a {
    padding: 0 18px 20px 18px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.85fr);
    gap: clamp(36px, 4.5vw, 64px);
  }

  .page-faq .faq-index__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-body__grid {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-faq .faq-aside {
    position: sticky;
    top: var(--faq-sticky-top);
  }

  .page-faq .qa-a {
    padding-left: 44px;
    max-width: 74ch;
  }

  .page-faq .qa-q {
    font-size: 16.5px;
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

  .page-faq .faq-cta__actions {
    justify-content: flex-end;
  }
}

/* ---------- 减弱动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .faq-index__item,
  .page-faq .qa-item,
  .page-faq .qa-sign::before,
  .page-faq .qa-sign::after,
  .page-faq .qa-link {
    transition: none;
  }

  .page-faq .faq-index__item:hover {
    transform: none;
  }
}
<<<END>>>