.page-faq {
  background: var(--void);
  color: var(--text-primary);
  font-family: var(--font-body);
}

.page-faq a {
  color: inherit;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 44px) 0 clamp(32px, 5vw, 60px);
  background: var(--space-ink);
  border-bottom: 1px solid var(--grid-line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: -18%;
  width: min(880px, 118%);
  height: 100%;
  background: linear-gradient(135deg, rgba(122, 92, 255, 0.32), rgba(47, 227, 208, 0.14) 58%, rgba(5, 7, 15, 0) 84%);
  clip-path: polygon(26% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(34, 48, 74, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(34, 48, 74, 0.6) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.32;
  pointer-events: none;
}

.page-faq .faq-hero .shell {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumbs {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  display: flex;
  gap: 8px;
  align-items: center;
}

.page-faq .breadcrumbs a {
  text-decoration: none;
  color: var(--text-secondary);
}

.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  color: var(--electric-cyan);
}

.page-faq .breadcrumbs [aria-current="page"] {
  color: var(--electric-cyan);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 28px;
  margin-top: clamp(20px, 3vw, 36px);
}

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--electric-cyan);
  margin: 0 0 14px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.16;
  font-size: clamp(28px, 6vw, 56px);
  margin: 0 0 18px;
  max-width: 18ch;
}

.page-faq .faq-lead {
  margin: 0;
  max-width: 52ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--text-secondary);
}

/* 快捷入口面板 */
.page-faq .faq-shortcuts {
  align-self: end;
  border: 1px solid var(--grid-line);
  border-top: 2px solid var(--nebula-purple);
  background: rgba(19, 28, 46, 0.78);
  backdrop-filter: blur(8px);
}

.page-faq .faq-shortcuts__head {
  margin: 0;
  padding: 11px 16px;
  border-bottom: 1px solid var(--grid-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}

.page-faq .faq-shortcuts__link {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 13px 16px;
  border-bottom: 1px solid var(--grid-line);
  text-decoration: none;
  transition: background var(--dur) var(--ease);
}

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

.page-faq .faq-shortcuts__link:hover,
.page-faq .faq-shortcuts__link:focus-visible {
  background: rgba(47, 227, 208, 0.09);
}

.page-faq .faq-shortcuts__num {
  font-size: 12px;
  color: var(--amber-gold);
  flex: 0 0 auto;
}

.page-faq .faq-shortcuts__text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: 15px;
  color: var(--text-primary);
}

.page-faq .faq-shortcuts__text em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.page-faq .faq-shortcuts__link:hover .faq-shortcuts__text em,
.page-faq .faq-shortcuts__link:focus-visible .faq-shortcuts__text em {
  color: var(--electric-cyan);
}

/* ---------- 计数条 ---------- */
.page-faq .faq-meter {
  border-bottom: 1px solid var(--grid-line);
  background: var(--void);
}

.page-faq .faq-meter__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px 34px;
  padding-top: 16px;
  padding-bottom: 16px;
}

.page-faq .faq-meter__cell {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-meter__num {
  font-size: 20px;
  color: var(--amber-gold);
  letter-spacing: 0.04em;
}

.page-faq .faq-meter__label {
  font-size: 13px;
  color: var(--text-muted);
}

.page-faq .faq-meter__note {
  margin: 0 0 0 auto;
  font-size: 13px;
  color: var(--text-secondary);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  padding: clamp(28px, 5vw, 64px) 0 clamp(40px, 6vw, 80px);
}

.page-faq .faq-layout {
  display: grid;
  gap: 28px;
}

/* 左侧索引 */
.page-faq .faq-index {
  border-top: 1px solid var(--grid-line);
  padding-top: 14px;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-index__link {
  display: flex;
  gap: 8px;
  align-items: baseline;
  padding: 8px 12px;
  border: 1px solid var(--grid-line);
  text-decoration: none;
  font-size: 14px;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-index__num {
  font-size: 11px;
  color: var(--nebula-purple);
}

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

/* 问答流 */
.page-faq .faq-stream {
  counter-reset: faqq;
  min-width: 0;
}

.page-faq .faq-group {
  padding-top: clamp(22px, 3vw, 36px);
  margin-bottom: clamp(28px, 4vw, 52px);
  scroll-margin-top: calc(var(--hdr-h) + 24px);
}

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

.page-faq .faq-group__head {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--grid-line);
}

.page-faq .faq-group__num {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--nebula-purple);
  padding-top: 6px;
  flex: 0 0 auto;
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.02em;
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.3;
}

.page-faq .faq-group__note {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* 手风琴 */
.page-faq .faq-item {
  position: relative;
  border-bottom: 1px solid var(--grid-line);
  padding-left: 16px;
  counter-increment: faqq;
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--electric-cyan);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-item[open]::before {
  transform: scaleY(1);
}

.page-faq .faq-item[open] {
  background: rgba(19, 28, 46, 0.6);
}

.page-faq .faq-item__sum {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 12px 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
}

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

.page-faq .faq-item__sum:hover .faq-item__q {
  color: var(--electric-cyan);
}

.page-faq .faq-item__no {
  font-size: 11px;
  color: var(--text-muted);
  padding-top: 6px;
  flex: 0 0 auto;
  letter-spacing: 0.06em;
}

.page-faq .faq-item__no::before {
  content: counter(faqq, decimal-leading-zero);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 6px;
  margin-left: auto;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--electric-cyan);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-item__sign::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-faq .faq-item__sign::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}

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

.page-faq .faq-item__a {
  padding: 0 16px 18px 0;
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.page-faq .faq-ticks {
  display: block;
  margin: 12px 0 2px;
  color: rgba(107, 124, 150, 0.85);
  max-width: 100%;
}

/* 图 */
.page-faq .faq-figure {
  margin: 20px 0 0;
  border: 1px solid var(--grid-line);
  background: var(--panel-slate);
}

.page-faq .faq-figure .media-frame {
  border: 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--grid-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

/* 尾部转人工 */
.page-faq .faq-tail {
  margin-top: clamp(24px, 4vw, 44px);
  padding: clamp(22px, 4vw, 40px);
  border: 1px solid var(--grid-line);
  border-left: 3px solid var(--nebula-purple);
  background: linear-gradient(155deg, rgba(122, 92, 255, 0.18), rgba(5, 7, 15, 0.92) 62%);
}

.page-faq .faq-tail h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.02em;
  font-size: clamp(20px, 2.8vw, 28px);
  line-height: 1.3;
}

.page-faq .faq-tail__text {
  margin: 0 0 22px;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.page-faq .faq-tail__grid {
  display: grid;
  gap: 1px;
  background: var(--grid-line);
  border: 1px solid var(--grid-line);
  margin-bottom: 22px;
}

.page-faq .faq-tail__cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: rgba(11, 18, 32, 0.9);
}

.page-faq .faq-tail__key {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}

.page-faq .faq-tail__val {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--amber-gold);
  word-break: break-word;
}

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

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-tail__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    align-items: end;
    gap: 44px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 224px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--hdr-h) + 24px);
    border-top: 0;
    border-left: 1px solid var(--grid-line);
    padding: 0 0 0 18px;
  }

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

  .page-faq .faq-index__item {
    flex: none;
  }

  .page-faq .faq-index__link {
    border: 0;
    border-bottom: 1px dashed rgba(34, 48, 74, 0.95);
    padding: 12px 0;
    font-size: 15px;
  }

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

  .page-faq .faq-item__sum {
    font-size: 17px;
    padding: 18px 12px 18px 0;
  }

  .page-faq .faq-item__a {
    padding-bottom: 22px;
  }
}

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