.page-faq {
  --faq-gap: clamp(20px, 4vw, 44px);
  --faq-hairline: rgba(52, 73, 90, 0.85);
  --faq-muted: var(--cool);
  --faq-accent: var(--pulse);
  background-color: var(--ink-900);
  color: var(--paper-white);
  overflow-x: hidden;
}

.page-faq section[id] {
  scroll-margin-top: 84px;
}

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

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

.page-faq .faq-figure .px-figure__cap {
  margin-top: 10px;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--faq-muted);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(20px, 3.5vw, 34px) 0 clamp(34px, 6vw, 64px);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(120% 90% at 6% 0%, rgba(47, 227, 200, 0.15), transparent 62%),
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 72%);
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 12px;
  background-image: repeating-linear-gradient(to bottom, var(--rule) 0 1px, transparent 1px 14px);
  opacity: 0.75;
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 6.4vw, 3.6rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  margin: 0.3em 0 0.55em;
  max-width: 13em;
  color: var(--paper-white);
}

.page-faq .faq-hero .px-lede {
  max-width: 34em;
  color: rgba(251, 247, 239, 0.86);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(18px, 3vw, 28px);
}

.page-faq .faq-jump a {
  display: inline-block;
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--paper-white);
  text-decoration: none;
  background-color: rgba(14, 39, 64, 0.7);
  border: 1px solid var(--rule);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--ink-900);
  background-color: var(--pulse);
  border-color: var(--pulse);
}

/* ---------- 分类索引条 ---------- */

.page-faq .faq-index {
  position: sticky;
  top: 0;
  z-index: 20;
  background-color: rgba(7, 26, 43, 0.96);
  border-bottom: 1px solid var(--rule);
  backdrop-filter: blur(6px);
}

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

.page-faq .faq-index__list a {
  display: inline-block;
  padding: 6px 12px;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.02em;
  color: var(--cool);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 2px;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--pulse);
  border-color: var(--rule);
}

/* ---------- 色带 ---------- */

.page-faq .faq-band {
  padding: clamp(34px, 6vw, 72px) 0;
}

.page-faq .faq-band--night {
  --faq-hairline: rgba(52, 73, 90, 0.85);
  --faq-muted: var(--cool);
  --faq-accent: var(--pulse);
  background-color: var(--ink-800);
  color: var(--paper-white);
}

.page-faq .faq-band--ink {
  --faq-hairline: rgba(52, 73, 90, 0.85);
  --faq-muted: var(--cool);
  --faq-accent: var(--pulse);
  background-color: var(--ink-900);
  color: var(--paper-white);
}

.page-faq .faq-band--paper {
  --faq-hairline: rgba(7, 26, 43, 0.16);
  --faq-muted: #55656f;
  --faq-accent: var(--archive);
  background-color: var(--paper);
  color: var(--ink-900);
}

.page-faq .faq-band--paper a {
  color: var(--archive);
  text-decoration-color: rgba(178, 58, 43, 0.45);
  text-underline-offset: 3px;
}

.page-faq .faq-band--paper a:hover,
.page-faq .faq-band--paper a:focus-visible {
  color: var(--ink-900);
}

/* ---------- 区块标题 ---------- */

.page-faq .faq-sechead {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: clamp(18px, 3.5vw, 32px);
}

.page-faq .faq-sechead__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 3.6vw, 2rem);
  font-weight: 700;
  line-height: 1;
  padding-top: 0.22em;
  color: var(--faq-accent);
}

.page-faq .faq-sechead__text h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 3.6vw, 2rem);
  line-height: 1.25;
  margin: 0 0 6px;
  letter-spacing: -0.005em;
}

.page-faq .faq-sechead__sub {
  margin: 0;
  max-width: 32em;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--faq-muted);
}

/* ---------- 速查列表 ---------- */

.page-faq .faq-hot__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-bottom: 1px solid var(--faq-hairline);
}

.page-faq .faq-hot__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
  padding: 16px 0;
  border-top: 1px solid var(--faq-hairline);
  transition: background-color var(--t-fast) var(--ease);
}

.page-faq .faq-hot__no {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--faq-accent);
  padding-top: 3px;
}

.page-faq .faq-hot__q {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.4vw, 1.1rem);
  font-weight: 700;
  line-height: 1.5;
}

.page-faq .faq-hot__a {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(251, 247, 239, 0.82);
}

.page-faq .faq-hot__go {
  grid-column: 2;
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.03em;
  color: var(--pulse);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 200, 0.4);
  padding-bottom: 1px;
}

.page-faq .faq-hot__go:hover,
.page-faq .faq-hot__go:focus-visible {
  color: var(--paper-white);
  border-bottom-color: var(--signal);
}

/* ---------- 问答手风琴 ---------- */

.page-faq .faq-list {
  border-bottom: 1px solid var(--faq-hairline);
}

.page-faq .faq-item {
  border-top: 1px solid var(--faq-hairline);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: clamp(14px, 2.4vw, 20px) 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--faq-accent);
  outline-offset: 4px;
}

.page-faq .faq-item__no {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.9;
  color: var(--faq-accent);
}

.page-faq .faq-item__q {
  font-family: var(--font-display);
  font-size: clamp(0.98rem, 2.3vw, 1.08rem);
  font-weight: 700;
  line-height: 1.6;
}

.page-faq .faq-item__mark {
  width: 20px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  line-height: 1.35;
  color: var(--faq-accent);
  transition: transform var(--t-fast) var(--ease);
}

.page-faq .faq-item[open] .faq-item__mark {
  transform: rotate(45deg);
}

.page-faq .faq-item[open] > summary {
  padding-bottom: 8px;
}

.page-faq .faq-item__a {
  padding: 0 0 clamp(16px, 2.6vw, 24px);
  max-width: 42em;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  font-size: 0.93rem;
  line-height: 1.85;
  color: inherit;
  opacity: 0.88;
}

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

.page-faq .faq-band--paper .faq-item__a p {
  opacity: 1;
  color: #24394a;
}

/* ---------- 设备适配 ---------- */

.page-faq .faq-device__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-device__figure {
  border: 1px solid var(--rule);
  padding: 10px;
  background-color: rgba(7, 26, 43, 0.45);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

/* ---------- 人工支持 ---------- */

.page-faq .faq-help__box {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3.5vw, 36px);
  padding: clamp(22px, 4.5vw, 42px);
  border: 1px solid var(--rule);
  background-image: linear-gradient(135deg, rgba(47, 227, 200, 0.08), transparent 55%);
  background-color: var(--ink-800);
  clip-path: polygon(0 0, calc(100% - 32px) 0, 100% 32px, 100% 100%, 32px 100%, 0 calc(100% - 32px));
}

.page-faq .faq-help__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--signal);
  margin-bottom: 10px;
}

.page-faq .faq-help h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 3.4vw, 1.85rem);
  line-height: 1.3;
  margin: 0 0 12px;
}

.page-faq .faq-help__copy p {
  margin: 0 0 10px;
  max-width: 36em;
  font-size: 0.95rem;
  line-height: 1.85;
  color: rgba(251, 247, 239, 0.86);
}

.page-faq .faq-help__copy strong {
  font-family: var(--font-mono);
  font-size: 0.92em;
  color: var(--pulse);
  font-weight: 600;
  word-break: break-all;
}

.page-faq .faq-help__meta {
  font-size: 0.84rem !important;
  color: var(--cool) !important;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: start;
}

.page-faq .faq-help__actions .px-btn {
  text-decoration: none;
}

.page-faq .faq-help__actions .px-btn:hover,
.page-faq .faq-help__actions .px-btn:focus-visible {
  transform: translate(-2px, -2px);
}

/* ---------- 断点 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-hot__item {
    grid-template-columns: 62px minmax(0, 1fr) auto;
    align-items: baseline;
    padding: 18px 0;
  }

  .page-faq .faq-hot__go {
    grid-column: 3;
    justify-self: end;
  }

  .page-faq .faq-item__a {
    padding-left: 54px;
  }
}

@media (min-width: 920px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: end;
  }

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

  .page-faq .faq-help__actions {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-device__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump a,
  .page-faq .faq-index__list a,
  .page-faq .faq-hot__item,
  .page-faq .faq-item__mark,
  .page-faq .faq-help__actions .px-btn {
    transition: none;
  }

  .page-faq .faq-help__actions .px-btn:hover,
  .page-faq .faq-help__actions .px-btn:focus-visible {
    transform: none;
  }
}
<<<END>>>