.page-faq {
  --faq-rail-w: 236px;
  --faq-gap: 52px;
  position: relative;
  isolation: isolate;
  display: block;
  padding-bottom: 104px;
  color: var(--cloud);
  background:
    radial-gradient(110% 68% at 88% -6%, rgba(30, 123, 255, 0.24), transparent 62%),
    radial-gradient(78% 52% at 3% 40%, rgba(12, 58, 52, 0.62), transparent 72%),
    var(--ink);
}

.page-faq::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(127, 212, 255, 0.075) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(127, 212, 255, 0.075) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 78%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 78%);
}

.page-faq .breadcrumb {
  padding-top: 26px;
}

.page-faq a {
  overflow-wrap: anywhere;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding: 42px 0 40px;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-hero__inner {
  max-width: 1080px;
}

.page-faq .faq-hero .eyebrow {
  margin: 0;
  color: var(--sky-soft);
}

.page-faq .faq-hero__title {
  margin: 16px 0 20px;
  max-width: 19ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.2vw, 74px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--cloud);
}

.page-faq .faq-hero .lede {
  max-width: 64ch;
  margin: 0;
  font-size: 17px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-facts {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-facts__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: rgba(10, 23, 48, 0.78);
}

.page-faq .faq-facts__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--lime);
}

.page-faq .faq-facts__label {
  font-size: 13px;
  line-height: 1.55;
  color: var(--mist);
}

/* ---------- 主体两栏 ---------- */

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding-top: 44px;
}

.page-faq .faq-rail,
.page-faq .faq-flow {
  min-width: 0;
}

.page-faq .rail {
  border-left: 1px solid var(--line-strong);
  padding-left: 0;
}

.page-faq .rail__title {
  margin: 0 0 14px 18px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sky-soft);
}

.page-faq .rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .rail__item {
  flex: 0 0 auto;
}

.page-faq .rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-left-width: 3px;
  border-left-color: transparent;
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
  text-decoration: none;
  color: var(--cloud);
  transition: color var(--dur), border-color var(--dur), background-color var(--dur);
}

.page-faq .rail__link:hover,
.page-faq .rail__link:focus-visible {
  color: var(--lime);
  background: rgba(30, 123, 255, 0.12);
}

.page-faq .rail__link[aria-current="true"] {
  color: var(--lime);
  font-weight: 700;
  border-left-color: var(--lime);
  background: rgba(198, 242, 78, 0.08);
}

.page-faq .rail__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-faq .rail__link[aria-current="true"] .rail__num {
  color: var(--lime);
}

/* ---------- 章节 ---------- */

.page-faq .faq-flow {
  display: flex;
  flex-direction: column;
  gap: 68px;
}

.page-faq .section-block {
  scroll-margin-top: calc(var(--header-h) + 26px);
}

.page-faq .section-block::before {
  content: "";
  display: block;
  width: 78px;
  height: 3px;
  margin-bottom: 20px;
  background: var(--sky);
}

.page-faq .section-head__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--sky-soft);
}

.page-faq .section-head__title {
  margin: 0 0 14px;
  max-width: 26ch;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.26;
  letter-spacing: -0.01em;
  color: var(--cloud);
}

.page-faq .section-head__lead {
  margin: 0 0 28px;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 图文分栏 ---------- */

.page-faq .faq-split {
  display: grid;
  gap: 30px;
  margin-bottom: 34px;
}

.page-faq .faq-split__main,
.page-faq .faq-split__side {
  min-width: 0;
}

.page-faq .faq-split__side .media-frame {
  margin: 0;
}

.page-faq .media-frame {
  margin: 0;
}

.page-faq .media-frame__caption {
  color: var(--mist);
  font-size: 12.5px;
  line-height: 1.6;
}

/* ---------- 步骤 ---------- */

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

.page-faq .faq-steps--wide {
  margin-bottom: 34px;
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-steps__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-steps__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 26px;
  font-weight: 600;
  line-height: 1;
  color: var(--lime);
}

.page-faq .faq-steps__title {
  margin: 0 0 6px;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--cloud);
}

.page-faq .faq-steps__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-list {
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  border-left: 3px solid transparent;
  padding: 2px 0 2px 18px;
  transition: border-color var(--dur), background-color var(--dur);
}

.page-faq .faq-item[open] {
  border-left-color: var(--lime);
  background: linear-gradient(90deg, rgba(198, 242, 78, 0.07), rgba(198, 242, 78, 0) 62%);
}

.page-faq .faq-item__q {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 17px 34px 17px 0;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--cloud);
  cursor: pointer;
  list-style: none;
  transition: color var(--dur);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 14px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--sky-soft);
  transition: color var(--dur);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
  color: var(--lime);
}

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

.page-faq .faq-item__index {
  flex: 0 0 auto;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--sky);
}

.page-faq .faq-item[open] .faq-item__index {
  color: var(--lime);
}

.page-faq .faq-item__a {
  padding: 0 36px 18px 0;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.85;
  color: var(--mist);
}

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

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

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

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

/* ---------- 数据表 ---------- */

.page-faq .table-scroll {
  margin-bottom: 34px;
}

/* ---------- 访问配图 ---------- */

.page-faq .faq-access-figure {
  margin: 0 0 34px;
}

/* ---------- 联系区块 ---------- */

.page-faq .faq-contact {
  display: grid;
  gap: 24px;
  padding: 28px 22px;
  border: 2px solid var(--sky);
  background: linear-gradient(135deg, rgba(18, 39, 77, 0.92), rgba(10, 23, 48, 0.96));
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-contact__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3px;
}

.page-faq .faq-contact__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--sky-soft);
}

.page-faq .faq-contact__value {
  font-size: 16px;
  line-height: 1.7;
  color: var(--cloud);
}

.page-faq .faq-contact .btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 780px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) 292px;
    gap: 36px;
    align-items: start;
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 32px 30px;
  }

  .page-faq .faq-contact__item {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }
}

@media (min-width: 940px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }

  .page-faq .rail__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .rail__item {
    display: block;
  }

  .page-faq .rail__link {
    border: 0;
    border-left: 3px solid transparent;
    margin-left: -1px;
    padding: 11px 12px 11px 17px;
    white-space: normal;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-hero {
    padding: 56px 0 48px;
  }
}

@media (max-width: 640px) {
  .page-faq .faq-facts {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-steps__item {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 12px;
  }

  .page-faq .faq-steps__num {
    font-size: 22px;
  }

  .page-faq .faq-item {
    padding-left: 12px;
  }

  .page-faq .faq-item__a {
    padding-right: 18px;
  }

  .page-faq .faq-item__q {
    font-size: 16px;
    padding-right: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .rail__link,
  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .faq-item__q::after {
    transition: none;
  }
}
<<<END>>>