.page-faq {
  --accent: var(--cyan);
  --faq-line: rgba(200, 210, 224, 0.12);
  background: var(--ink-950);
  color: var(--silver-200);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(2rem, 5vw, 3.75rem) 0 clamp(2rem, 4vw, 3rem);
  background:
    radial-gradient(58% 70% at 82% 12%, rgba(54, 230, 214, 0.14), transparent 70%),
    radial-gradient(46% 60% at 6% 92%, rgba(139, 124, 255, 0.12), transparent 72%),
    linear-gradient(180deg, var(--ink-950), var(--ink-1000));
  border-bottom: 1px solid var(--ink-700);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 1.75rem;
}

.page-faq .faq-hero__lead h1 {
  margin: 0.7rem 0 1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5.4vw, 3.9rem);
  line-height: 1.02;
  letter-spacing: -0.035em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--silver-200);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--ink-700);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--silver-500);
}

.page-faq .faq-hero__meta .mono:first-child {
  color: var(--cyan);
}

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

.page-faq .faq-hero__figure .figure__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--ink-700);
  border-radius: var(--r);
  background: var(--ink-800);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.06);
}

.page-faq .faq-hero__figure .figure__cap {
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--silver-500);
}

/* ---------- 入口索引卡 ---------- */
.page-faq .faq-entries {
  padding: clamp(2rem, 4vw, 3.25rem) 0;
  border-bottom: 1px solid var(--ink-700);
}

.page-faq .faq-entries__head {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.page-faq .faq-entries__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-entries__note {
  margin: 0;
  font-size: 0.85rem;
  color: var(--silver-500);
}

.page-faq .entry-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--ink-700);
  border: 1px solid var(--ink-700);
  border-radius: var(--r);
  overflow: hidden;
}

.page-faq .entry-card {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  height: 100%;
  padding: 1.35rem 1.25rem;
  background: var(--ink-950);
  color: inherit;
  text-decoration: none;
  transition: background 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-faq .entry-card:hover,
.page-faq .entry-card:focus-visible {
  background: var(--ink-800);
  box-shadow: inset 3px 0 0 var(--cyan);
}

.page-faq .entry-card__num {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .entry-card--accent .entry-card__num {
  color: var(--amber);
}

.page-faq .entry-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .entry-card__desc {
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--silver-500);
}

.page-faq .entry-card__go {
  margin-top: auto;
  padding-top: 0.6rem;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--silver-500);
  transition: color 160ms var(--ease);
}

.page-faq .entry-card:hover .entry-card__go,
.page-faq .entry-card:focus-visible .entry-card__go {
  color: var(--cyan);
}

/* ---------- 变更明细 ---------- */
.page-faq .faq-changes {
  padding: clamp(2.25rem, 4.5vw, 3.75rem) 0;
  background: var(--ink-1000);
  border-bottom: 1px solid var(--ink-700);
}

.page-faq .faq-changes__grid {
  display: grid;
  gap: 1.75rem;
}

.page-faq .faq-changes__intro h2 {
  margin: 0.6rem 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3vw, 2.35rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--paper);
}

.page-faq .faq-changes__intro p {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--silver-200);
}

.page-faq .faq-changes__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

.page-faq .link-inline {
  color: var(--cyan);
  text-decoration: none;
  font-size: 0.9rem;
  border-bottom: 1px solid rgba(54, 230, 214, 0.35);
  padding-bottom: 1px;
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

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

.page-faq .faq-changes__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--ink-700);
  border-top: 1px solid var(--ink-700);
  border-bottom: 1px solid var(--ink-700);
}

.page-faq .faq-changes__steps li {
  display: grid;
  grid-template-columns: 2.75rem minmax(0, 1fr);
  gap: 0.35rem 0.9rem;
  padding: 1.15rem 1rem;
  background: var(--ink-950);
}

.page-faq .faq-changes__num {
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--amber);
  padding-top: 0.15rem;
}

.page-faq .faq-changes__steps h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-changes__steps p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--silver-500);
}

/* ---------- 索引轨 + 问答面板 ---------- */
.page-faq .faq-body {
  padding: clamp(2.25rem, 4.5vw, 3.75rem) 0;
}

.page-faq .faq-body__grid {
  display: grid;
  gap: 1.25rem;
}

.page-faq .faq-rail {
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-radius: var(--r);
  padding: 1.15rem 1.1rem;
}

.page-faq .faq-rail__label {
  margin: 0 0 0.85rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

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

.page-faq .faq-rail__list li + li {
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-rail__list a {
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
  padding: 0.6rem 0.15rem;
  font-size: 0.9rem;
  color: var(--silver-200);
  text-decoration: none;
  transition: color 160ms var(--ease), padding-left 160ms var(--ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--cyan);
  padding-left: 0.5rem;
}

.page-faq .faq-rail__list .mono {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--silver-500);
  flex: none;
}

.page-faq .faq-rail__top {
  display: inline-block;
  margin-top: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--silver-500);
  text-decoration: none;
  border-bottom: 1px solid var(--ink-700);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

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

.page-faq .faq-panel {
  padding: clamp(1.25rem, 3vw, 2.25rem);
  background: var(--paper);
  color: var(--ink-950);
  border-radius: var(--r);
  box-shadow: 0 24px 60px -40px rgba(5, 10, 18, 0.9);
}

.page-faq .faq-panel__title {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  letter-spacing: -0.02em;
  color: var(--ink-950);
  padding-bottom: 0.85rem;
  border-bottom: 2px solid var(--ink-950);
}

.page-faq .faq-group + .faq-group {
  margin-top: 2rem;
  padding-top: 1.75rem;
  border-top: 1px dashed rgba(10, 20, 36, 0.22);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.55rem;
}

.page-faq .faq-group__head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--ink-950);
}

.page-faq .faq-group__intro {
  margin: 0 0 0.85rem;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--ink-800);
}

.page-faq .faq-item {
  border-top: 1px solid rgba(10, 20, 36, 0.14);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
  cursor: pointer;
  list-style: none;
  font-size: 0.97rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink-950);
  transition: color 160ms var(--ease);
}

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

.page-faq .faq-item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1.3;
  color: var(--ink-700);
  transition: color 160ms var(--ease);
}

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--ink-700);
}

.page-faq .faq-item summary:hover::after,
.page-faq .faq-item summary:focus-visible::after {
  color: var(--amber);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--amber);
}

.page-faq .faq-item__body {
  padding: 0 0 1.1rem;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--ink-800);
}

.page-faq .faq-item__body p {
  margin: 0;
}

.page-faq .faq-item__steps {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.45rem;
}

.page-faq .faq-item__steps li::marker {
  font-family: var(--font-mono);
  color: var(--ink-700);
}

/* ---------- 索引号定位步骤 ---------- */
.page-faq .faq-steps {
  padding: clamp(2.25rem, 4.5vw, 3.75rem) 0;
  background: linear-gradient(180deg, var(--ink-950), var(--ink-1000));
  border-top: 1px solid var(--ink-700);
}

.page-faq .faq-steps__grid {
  display: grid;
  gap: 1.75rem;
}

.page-faq .faq-steps__text h2 {
  margin: 0.6rem 0 0.8rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3vw, 2.35rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--paper);
}

.page-faq .faq-steps__intro {
  margin: 0 0 1.35rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--silver-200);
}

.page-faq .step-list {
  list-style: none;
  margin: 0 0 1.35rem;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--ink-700);
  border: 1px solid var(--ink-700);
  border-radius: var(--r);
  overflow: hidden;
}

.page-faq .step-list li {
  display: grid;
  grid-template-columns: 2.25rem minmax(0, 1fr);
  gap: 0.75rem;
  padding: 1rem 1rem 1.05rem;
  background: var(--ink-950);
}

.page-faq .step-list__num {
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
  opacity: 0.85;
}

.page-faq .step-list h3 {
  margin: 0 0 0.3rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .step-list p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--silver-500);
}

.page-faq .faq-steps .chip-copy {
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

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

.page-faq .faq-steps__figure .figure__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--ink-700);
  border-radius: var(--r);
  background: var(--ink-800);
}

.page-faq .faq-steps__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.05);
}

.page-faq .faq-steps__figure .figure__cap {
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--silver-500);
}

/* ---------- 服务响应 ---------- */
.page-faq .faq-service {
  padding: clamp(2.25rem, 4.5vw, 3.75rem) 0;
  border-top: 1px solid var(--ink-700);
  background: var(--ink-950);
}

.page-faq .faq-service__grid {
  display: grid;
  gap: 1.75rem;
}

.page-faq .faq-service__text h2 {
  margin: 0.6rem 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 2.8vw, 2.15rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-service__text > p {
  margin: 0 0 1.25rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--silver-200);
}

.page-faq .service-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--ink-700);
  border: 1px solid var(--ink-700);
  border-radius: var(--r);
  overflow: hidden;
}

.page-faq .service-facts li {
  padding: 0.9rem 1rem;
  background: var(--ink-1000);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--silver-200);
}

.page-faq .service-facts .mono {
  display: inline-block;
  min-width: 3.2rem;
  margin-right: 0.6rem;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .service-card {
  padding: 1.5rem 1.35rem;
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--amber);
  border-radius: var(--r);
}

.page-faq .service-card__label {
  margin: 0 0 0.5rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--silver-500);
}

.page-faq .service-card__big {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  letter-spacing: -0.03em;
  color: var(--paper);
}

.page-faq .service-card__big span {
  color: var(--amber);
  padding: 0 0.15em;
}

.page-faq .service-card__desc {
  margin: 0 0 1.15rem;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--silver-500);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-help {
  padding: 0 0 clamp(2.5rem, 5vw, 4rem);
}

.page-faq .faq-help__band {
  display: grid;
  gap: 1.15rem;
  padding: clamp(1.5rem, 4vw, 2.75rem);
  border: 1px solid var(--ink-700);
  border-radius: var(--r);
  background:
    linear-gradient(100deg, rgba(139, 124, 255, 0.2), rgba(54, 230, 214, 0.14) 55%, rgba(255, 138, 42, 0.22)),
    var(--ink-1000);
}

.page-faq .faq-help__band h2 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 2.6vw, 1.95rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-help__band p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.78;
  color: var(--silver-200);
}

.page-faq .faq-help__band .btn {
  justify-self: start;
}

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

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 2.5rem;
    align-items: end;
  }

  .page-faq .faq-changes__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 2.5rem;
    align-items: start;
  }

  .page-faq .faq-steps__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 2.75rem;
    align-items: center;
  }

  .page-faq .faq-service__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 2.5rem;
    align-items: start;
  }

  .page-faq .faq-help__band {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 1.75rem;
  }

  .page-faq .faq-help__band .btn {
    justify-self: end;
  }
}

@media (min-width: 1024px) {
  .page-faq .entry-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 2.5rem;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 6.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .entry-card,
  .page-faq .entry-card__go,
  .page-faq .link-inline,
  .page-faq .faq-rail__list a,
  .page-faq .faq-rail__top,
  .page-faq .faq-item summary,
  .page-faq .faq-item summary::after {
    transition: none;
  }
}
<<<END>>>