.page-faq {
  --faq-shell-gap: 32px;
  --faq-index-w: 216px;
  --faq-rule: rgba(30, 74, 120, 0.62);
}

/* ---------- 首屏：框景窗口 ---------- */
.page-faq .faq-hero {
  padding: 20px 0 8px;
}

.page-faq .faq-hero__frame {
  position: relative;
  border: var(--border-hard);
  background:
    linear-gradient(152deg, rgba(11, 37, 69, 0.94) 0%, rgba(6, 20, 38, 0.72) 62%, rgba(6, 20, 38, 0.95) 100%);
  box-shadow: var(--shadow-hard-lg);
  padding: clamp(24px, 4.4vw, 52px) clamp(20px, 4vw, 48px) clamp(22px, 3.4vw, 40px);
  overflow: hidden;
}

.page-faq .faq-hero__frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(30, 74, 120, 0.34) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(0deg, rgba(30, 74, 120, 0.22) 0 1px, transparent 1px 56px);
  opacity: 0.6;
  pointer-events: none;
}

.page-faq .faq-hero__frame::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: clamp(120px, 26%, 300px);
  height: 4px;
  background: linear-gradient(90deg, var(--electric-cyan), var(--cyan-deep) 70%, transparent);
}

.page-faq .faq-hero__eyebrow,
.page-faq .faq-hero__title,
.page-faq .faq-hero__lede,
.page-faq .faq-hero__stats {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--electric-cyan);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.9rem, 5.6vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 68ch;
  font-size: clamp(0.95rem, 1.1vw, 1.05rem);
  line-height: 1.85;
  color: var(--text-muted);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-hero__stat {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 0;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-hero__num {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  color: var(--electric-cyan);
  letter-spacing: 0.02em;
}

.page-faq .faq-hero__cap {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-shell {
  display: block;
  padding-top: clamp(32px, 5vw, 56px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 左侧题号索引 ---------- */
.page-faq .faq-index {
  border: var(--border-soft);
  background: var(--glass);
  padding: 18px 16px;
  margin-bottom: 28px;
}

.page-faq .faq-index__head {
  margin: 0 0 14px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--electric-cyan);
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.page-faq .faq-index__label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  border-left: 3px solid transparent;
  padding-left: 8px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-index__label:hover,
.page-faq .faq-index__label:focus-visible {
  color: var(--electric-cyan);
  border-left-color: var(--electric-cyan);
}

.page-faq .faq-index__nums {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding-left: 11px;
}

.page-faq .faq-index__nums a {
  font-family: var(--font-data);
  font-size: 11px;
  line-height: 1;
  padding: 4px 5px;
  color: var(--text-muted);
  text-decoration: none;
  border: 1px solid rgba(30, 74, 120, 0.85);
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-index__nums a:hover,
.page-faq .faq-index__nums a:focus-visible {
  color: var(--abyss-900);
  background: var(--electric-cyan);
  border-color: var(--electric-cyan);
}

.page-faq .faq-index__note {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--faq-rule);
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--text-muted);
}

/* ---------- 章节 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(36px, 6vw, 64px);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--hull-600);
}

.page-faq .faq-group__num {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--electric-cyan);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.15rem, 2.8vw, 1.6rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

/* ---------- 信息图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 24px;
  border: var(--border-soft);
  background: var(--abyss-700);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 5 / 3;
  filter: saturate(1.05) contrast(1.04);
}

.page-faq .faq-figure .media-frame__caption {
  display: block;
  padding: 12px 14px;
  border-top: 1px solid var(--faq-rule);
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--text-muted);
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--faq-rule);
}

.page-faq .qa {
  border-bottom: 1px solid var(--faq-rule);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) 18px;
  align-items: center;
  gap: 10px;
  padding: 16px 4px;
  cursor: pointer;
  list-style: none;
  transition: background-color 0.22s ease;
}

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

.page-faq .qa__q:hover {
  background: rgba(34, 211, 238, 0.06);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--electric-cyan);
  outline-offset: 2px;
}

.page-faq .qa__num {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  transition: color 0.22s ease;
}

.page-faq .qa__text {
  min-width: 0;
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text-primary);
}

.page-faq .qa__sign {
  position: relative;
  justify-self: end;
  width: 14px;
  height: 14px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  top: 6px;
  left: 0;
  width: 14px;
  height: 2px;
  background: var(--text-muted);
  transition: transform 0.24s ease, background-color 0.24s ease;
}

.page-faq .qa__sign::after {
  transform: rotate(90deg);
}

.page-faq .qa[open] > .qa__q {
  background: rgba(34, 211, 238, 0.05);
}

.page-faq .qa[open] .qa__num {
  color: var(--electric-cyan);
}

.page-faq .qa[open] .qa__sign::before,
.page-faq .qa[open] .qa__sign::after {
  background: var(--electric-cyan);
}

.page-faq .qa[open] .qa__sign::after {
  transform: rotate(0deg);
}

.page-faq .qa__a {
  padding: 0 4px 20px 50px;
  animation: faq-answer-in 0.26s ease both;
}

.page-faq .qa__a p {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid rgba(34, 211, 238, 0.4);
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-faq .qa__a a {
  color: var(--electric-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .qa__a a:hover {
  color: var(--ice-white);
}

@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 分隔说明带 ---------- */
.page-faq .faq-divider {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  margin: 0 0 clamp(32px, 5vw, 52px);
  padding: 16px 18px;
  background:
    linear-gradient(90deg, rgba(34, 211, 238, 0.1), rgba(11, 37, 69, 0.5) 42%, rgba(6, 20, 38, 0.2));
  border-left: 3px solid var(--electric-cyan);
}

.page-faq .faq-divider__mark {
  position: relative;
  display: block;
  height: 22px;
  background-image: repeating-linear-gradient(0deg, var(--electric-cyan) 0 1px, transparent 1px 5px);
  opacity: 0.75;
}

.page-faq .faq-divider p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--text-muted);
}

/* ---------- 尾部补充问答 ---------- */
.page-faq .faq-list--tail {
  margin-bottom: clamp(32px, 5vw, 56px);
}

/* ---------- 人工支持 ---------- */
.page-faq .faq-support {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  border: var(--border-hard);
  background:
    linear-gradient(135deg, rgba(11, 37, 69, 0.92), rgba(6, 20, 38, 0.85));
  box-shadow: var(--shadow-hard-lg);
  padding: clamp(22px, 3.6vw, 40px);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-support__eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--coral-orange);
}

.page-faq .faq-support__title {
  margin: 0 0 14px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.2rem, 3vw, 1.7rem);
  line-height: 1.3;
  color: var(--text-primary);
}

.page-faq .faq-support__text {
  margin: 0;
  max-width: 56ch;
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-faq .faq-support__list {
  margin: 0 0 20px;
  padding: 0;
}

.page-faq .faq-support__row {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-support__row dt {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.page-faq .faq-support__row dd {
  margin: 0;
  font-family: var(--font-data);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--text-primary);
  word-break: break-word;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-shell {
    padding-top: clamp(40px, 5vw, 64px);
  }

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

  .page-faq .faq-hero__stat {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 18px 20px 18px 0;
    border-bottom: 0;
    border-right: 1px solid var(--faq-rule);
  }

  .page-faq .faq-hero__stat:last-child {
    border-right: 0;
  }

  .page-faq .qa__q {
    grid-template-columns: 64px minmax(0, 1fr) 20px;
    gap: 14px;
    padding: 20px 8px;
  }

  .page-faq .qa__a {
    padding: 0 8px 24px 78px;
  }

  .page-faq .qa__a p {
    font-size: 0.95rem;
  }

  .page-faq .faq-support {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-shell {
    display: grid;
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: clamp(40px, 4.5vw, 64px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    margin-bottom: 0;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
  }

  .page-faq .faq-index__list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .page-faq .faq-divider {
    grid-template-columns: 22px minmax(0, 1fr);
    padding: 20px 24px;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-main {
    max-width: 880px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__a {
    animation: none;
  }

  .page-faq .qa__sign::before,
  .page-faq .qa__sign::after,
  .page-faq .qa__num,
  .page-faq .qa__q,
  .page-faq .faq-index__nums a {
    transition: none;
  }
}
<<<END>>>