.page-faq {
  position: relative;
  color: var(--text);
  background-color: var(--ink);
  background-image:
    radial-gradient(760px 460px at 88% -6%, rgba(123, 92, 255, 0.22), transparent 68%),
    radial-gradient(620px 380px at 4% 16%, rgba(242, 183, 74, 0.10), transparent 62%),
    radial-gradient(900px 560px at 50% 106%, rgba(78, 216, 192, 0.07), transparent 72%);
  background-repeat: no-repeat;
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding-block: clamp(1rem, 3vw, 1.75rem) 0;
  font-size: 0.8125rem;
}
.page-faq .breadcrumb__link {
  color: var(--muted);
  text-decoration: none;
}
.page-faq .breadcrumb__link:hover {
  color: var(--gold);
}

/* ---------- 页首 ---------- */
.page-faq .faq-hero {
  padding: clamp(1.75rem, 4.5vw, 3.25rem) 0 clamp(1.75rem, 4vw, 2.5rem);
}

.page-faq .faq-hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}
.page-faq .faq-hero__eyebrow::after {
  content: "";
  flex: 0 1 220px;
  height: 1px;
  background: linear-gradient(90deg, var(--rule), transparent);
}

.page-faq .faq-hero__title {
  margin: 0 0 1rem;
  font-size: clamp(2.125rem, 5.6vw, 3.5rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--ice);
}

.page-faq .faq-hero__lead {
  max-width: 46rem;
  margin: 0;
  font-size: clamp(1rem, 1.6vw, 1.0625rem);
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-hero__tags .data-tag {
  padding: 0.28rem 0.65rem;
  border: 1px solid var(--rule);
  background: rgba(13, 21, 48, 0.72);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--data);
}

/* ---------- 四组快速索引 ---------- */
.page-faq .faq-quick {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: linear-gradient(180deg, rgba(13, 21, 48, 0.8), rgba(6, 10, 27, 0.5));
}

.page-faq .faq-quick__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-quick__item {
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.page-faq .faq-quick__item:nth-child(2n) {
  border-right: 0;
}
.page-faq .faq-quick__item:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.page-faq .faq-quick__link {
  position: relative;
  display: block;
  padding: clamp(0.95rem, 2.4vw, 1.5rem) clamp(0.85rem, 2vw, 1.25rem);
  color: inherit;
  text-decoration: none;
  transition: background-color 0.18s var(--ease);
}
.page-faq .faq-quick__link::before {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--violet));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.22s var(--ease);
}
.page-faq .faq-quick__link:hover,
.page-faq .faq-quick__link:focus-visible {
  background-color: rgba(123, 92, 255, 0.1);
}
.page-faq .faq-quick__link:hover::before,
.page-faq .faq-quick__link:focus-visible::before {
  transform: scaleX(1);
}

.page-faq .faq-quick__no {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--data);
}
.page-faq .faq-quick__name {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 1.0625rem;
  font-weight: 800;
  color: var(--ice);
}
.page-faq .faq-quick__desc {
  display: block;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--muted);
}

@media (min-width: 860px) {
  .page-faq .faq-quick__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-faq .faq-quick__item {
    border-bottom: 0;
  }
  .page-faq .faq-quick__item:nth-child(2n) {
    border-right: 1px solid var(--rule);
  }
  .page-faq .faq-quick__item:last-child {
    border-right: 0;
  }
}

/* ---------- 左侧索引 + 右侧正文 ---------- */
.page-faq .faq-body {
  padding-top: clamp(2rem, 5vw, 3.5rem);
}

.page-faq .faq-layout {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
}

@media (min-width: 1020px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 208px) minmax(0, 1fr);
    align-items: start;
  }
}

.page-faq .faq-rail {
  padding-left: 0.9rem;
  border-left: 2px solid var(--rule);
}

@media (min-width: 1020px) {
  .page-faq .faq-rail {
    position: sticky;
    top: 7.5rem;
  }
}

.page-faq .faq-rail__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

@media (min-width: 1020px) {
  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }
}

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

.page-faq .faq-rail__link {
  display: block;
  padding: 0.45rem 0.55rem;
  border-left: 2px solid transparent;
  font-size: 0.875rem;
  line-height: 1.55;
  white-space: nowrap;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

@media (min-width: 1020px) {
  .page-faq .faq-rail__link {
    padding: 0.55rem 0.5rem;
    white-space: normal;
    border-bottom: 1px solid var(--rule);
  }
}

.page-faq .faq-rail__link:hover {
  color: var(--text);
}

.page-faq .faq-rail__link[data-active] {
  color: var(--gold);
  border-left-color: var(--gold);
}

/* ---------- 章节 ---------- */
.page-faq .faq-chapter {
  padding-bottom: clamp(2.25rem, 5vw, 3.5rem);
  margin-bottom: clamp(2.25rem, 5vw, 3.5rem);
  border-bottom: 1px solid var(--rule);
  scroll-margin-top: 7rem;
}
.page-faq .faq-chapter:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-chapter__head {
  position: relative;
  padding-top: 1.1rem;
  margin-bottom: 1.6rem;
}
.page-faq .faq-chapter__head::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 64px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.page-faq .faq-chapter__index {
  display: block;
  margin-bottom: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.page-faq .faq-chapter__title {
  margin: 0 0 0.7rem;
  font-size: clamp(1.5rem, 3.4vw, 2.25rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.005em;
  color: var(--ice);
}

.page-faq .faq-chapter__lead {
  max-width: 44rem;
  margin: 0;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--muted);
}

@media (min-width: 1120px) {
  .page-faq .faq-chapter__body--split {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 2rem;
    align-items: start;
  }
  .page-faq .faq-chapter__body--split .faq-figure {
    margin-bottom: 0;
  }
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 0.65rem;
}

.page-faq .faq-item {
  border: 1px solid var(--rule);
  background: linear-gradient(180deg, rgba(13, 21, 48, 0.86), rgba(6, 10, 27, 0.86));
  transition: border-color 0.16s var(--ease), box-shadow 0.16s var(--ease);
}
.page-faq .faq-item:hover {
  border-color: rgba(242, 183, 74, 0.42);
}
.page-faq .faq-item[open] {
  border-color: rgba(242, 183, 74, 0.6);
  box-shadow: 0 18px 42px -32px rgba(123, 92, 255, 0.95);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 1rem 1.15rem;
  list-style: none;
  cursor: pointer;
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__no {
  flex: none;
  padding-top: 0.28rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--data);
}

.page-faq .faq-item__text {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.65;
  color: var(--ice);
}

.page-faq .faq-item__sign {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 0.4rem;
  margin-left: auto;
}
.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--gold);
  transition: transform 0.2s var(--ease);
}
.page-faq .faq-item__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}
.page-faq .faq-item__sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}
.page-faq .faq-item[open] .faq-item__sign::after {
  transform: scaleY(0);
}

.page-faq .faq-item__a {
  padding: 0 1.15rem 1.15rem 2.75rem;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--text);
}
.page-faq .faq-item__a p {
  margin: 0;
}
.page-faq .faq-item__a p + p {
  margin-top: 0.6rem;
}

@media (prefers-reduced-motion: no-preference) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: faq-reveal 0.2s var(--ease) both;
  }
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 上电六步 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: 0.6rem;
  margin: 0 0 1.75rem;
  padding: 0;
  list-style: none;
}

@media (min-width: 780px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-faq .faq-step {
  display: flex;
  gap: 0.8rem;
  padding: 0.9rem 1rem;
  border-left: 2px solid var(--rule);
  background: rgba(13, 21, 48, 0.62);
  transition: border-color 0.16s var(--ease);
}
.page-faq .faq-step:hover {
  border-left-color: var(--gold);
}

.page-faq .faq-step__no {
  flex: none;
  padding-top: 0.14rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .faq-step__text {
  font-size: 0.9375rem;
  line-height: 1.72;
  color: var(--text);
}

/* ---------- 排查顺序 ---------- */
.page-faq .faq-flow {
  margin: 0 0 1.75rem;
  padding: 0;
  list-style: none;
}

.page-faq .faq-flow__step {
  position: relative;
  display: flex;
  gap: 1rem;
  padding-bottom: 1.5rem;
}
.page-faq .faq-flow__step:last-child {
  padding-bottom: 0;
}
.page-faq .faq-flow__step::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 30px;
  bottom: 2px;
  width: 1px;
  background: linear-gradient(180deg, var(--rule), transparent);
}
.page-faq .faq-flow__step:last-child::before {
  display: none;
}

.page-faq .faq-flow__no {
  position: relative;
  z-index: 1;
  flex: none;
  display: grid;
  place-items: center;
  width: 27px;
  height: 27px;
  border: 1px solid var(--rule);
  background: var(--layer);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--data);
}

.page-faq .faq-flow__title {
  margin: 0 0 0.3rem;
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.5;
  color: var(--ice);
}

.page-faq .faq-flow__desc {
  margin: 0;
  max-width: 40rem;
  font-size: 0.9375rem;
  line-height: 1.82;
  color: var(--muted);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0 0 1.5rem;
  padding: 0.5rem;
  border: 1px solid var(--rule);
  background: rgba(13, 21, 48, 0.6);
}
.page-faq .faq-figure .img-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-figure .img-frame__cap {
  padding-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--muted);
}
.page-faq .faq-figure--flow {
  margin-top: 0.5rem;
  border-left: 2px solid rgba(242, 183, 74, 0.5);
}

/* ---------- 支持通道 ---------- */
.page-faq .faq-channels {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

@media (min-width: 640px) {
  .page-faq .faq-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-faq .faq-channel {
  padding: 1.15rem 1.25rem;
  border: 1px solid var(--rule);
  border-top: 2px solid var(--gold);
  background: rgba(13, 21, 48, 0.75);
}

.page-faq .faq-channel__label {
  margin: 0 0 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .faq-channel__value {
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: clamp(0.9375rem, 2.2vw, 1.0625rem);
  letter-spacing: 0.02em;
  color: var(--ice);
  word-break: break-all;
}

.page-faq .faq-channel__copy {
  padding: 0.34rem 0.78rem;
  border: 1px solid var(--rule);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--gold);
  cursor: pointer;
  transition: background-color 0.16s var(--ease), border-color 0.16s var(--ease), color 0.16s var(--ease);
}
.page-faq .faq-channel__copy:hover {
  border-color: var(--gold);
  background: rgba(242, 183, 74, 0.12);
}
.page-faq .faq-channel__copy[data-copied] {
  border-color: var(--data);
  color: var(--data);
}

.page-faq .faq-support__note {
  margin: 0 0 1.4rem;
  max-width: 46rem;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--text);
}

.page-faq .faq-subhead {
  margin: 0 0 0.85rem;
  font-size: 1.0625rem;
  font-weight: 800;
  color: var(--ice);
}

.page-faq .faq-checklist {
  display: grid;
  gap: 0.5rem;
  margin: 0 0 1.6rem;
  padding: 0;
  list-style: none;
}

.page-faq .faq-checklist li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: var(--text);
}
.page-faq .faq-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border: 1px solid var(--gold);
  background: rgba(242, 183, 74, 0.28);
  transform: rotate(45deg);
}

.page-faq .faq-support__more {
  margin: 0;
  max-width: 48rem;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--muted);
}
.page-faq .faq-support__more a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 183, 74, 0.45);
}
.page-faq .faq-support__more a:hover {
  border-bottom-color: var(--gold);
  color: var(--ice);
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quick__link,
  .page-faq .faq-quick__link::before,
  .page-faq .faq-item,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after,
  .page-faq .faq-step,
  .page-faq .faq-rail__link,
  .page-faq .faq-channel__copy {
    transition: none;
  }
  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }
}
<<<END>>>