.page-faq {
  --faq-rail-w: 300px;
  --faq-gap: 56px;
  overflow-x: clip;
}

.page-faq .breadcrumb {
  margin: 22px 0 6px;
  font-size: 13px;
}
.page-faq .breadcrumb a {
  color: var(--silver);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--night);
}
.page-faq .breadcrumb__sep {
  margin: 0 8px;
  color: var(--line);
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--muted);
}

.page-faq .section-head {
  max-width: 760px;
  margin-bottom: 28px;
}
.page-faq .section-head h2 {
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.18;
  letter-spacing: 0.01em;
  color: var(--cold);
  margin: 10px 0 0;
}

.page-faq .faq-lead {
  color: var(--silver);
  font-size: 16px;
  line-height: 1.75;
  max-width: 64ch;
  margin: 14px 0 0;
}

/* ---------- 首屏 ---------- */
.faq-intro__grid {
  display: grid;
  gap: 32px;
}
.faq-intro__copy h1 {
  font-size: clamp(30px, 6.4vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--cold);
  margin: 14px 0 0;
  max-width: 22ch;
}
.faq-intro__copy .lede {
  margin-top: 18px;
  max-width: 58ch;
}
.faq-intro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.faq-intro__index {
  align-self: start;
  border-top: 2px solid var(--amber);
}
.faq-intro__index .card__label {
  color: var(--amber);
  letter-spacing: 0.08em;
}
.faq-index-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}
.faq-index-list li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 11px 0;
  border-top: 1px solid var(--line-soft);
}
.faq-index-list li:first-child {
  border-top: 0;
  padding-top: 2px;
}
.faq-index-list__no {
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--amber);
  letter-spacing: 0.06em;
  flex: none;
}
.faq-index-list a {
  color: var(--cold);
  font-size: 15px;
  line-height: 1.55;
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}
.faq-index-list a:hover,
.faq-index-list a:focus-visible {
  color: var(--night);
}

/* ---------- 流程条带 ---------- */
.page-faq .faq-flow {
  margin: 0;
}
.page-faq .faq-flow .media-frame__caption {
  border-top: 1px solid var(--line-soft);
  padding-top: 10px;
}

/* ---------- 场景对照 ---------- */
.page-faq .faq-scenes {
  background:
    radial-gradient(120% 80% at 88% 0%, rgba(79, 166, 255, 0.09), transparent 62%),
    var(--bg);
}
.page-faq .table-wrap {
  margin-bottom: 40px;
}
.page-faq .data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.page-faq .data-table caption {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding: 0 0 12px;
}
.page-faq .data-table th,
.page-faq .data-table td {
  padding: 13px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-soft);
  line-height: 1.6;
}
.page-faq .data-table thead th {
  color: var(--silver);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  white-space: nowrap;
  border-bottom-color: var(--line);
}
.page-faq .data-table td:first-child {
  color: var(--amber);
  font-weight: 500;
  white-space: nowrap;
}
.page-faq .data-table td {
  color: var(--silver);
}

.faq-scene-tabs {
  margin-top: 8px;
}
.faq-scene-panel {
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
}
.faq-scene-panel__note {
  color: var(--cold);
  font-size: 15px;
  line-height: 1.8;
  max-width: 66ch;
  margin: 0;
}
.faq-scene-meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  margin: 16px 0 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.02em;
}
.faq-scene-meta b {
  color: var(--cyan);
  font-weight: 500;
}

.faq-symptoms {
  margin-top: 22px;
}
.faq-symptoms__title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 12px;
}
.faq-symptom-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-faq .faq-symptom-grid .tag {
  text-decoration: none;
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.page-faq .faq-symptom-grid .tag:hover,
.page-faq .faq-symptom-grid .tag:focus-visible {
  border-color: var(--night);
  color: var(--cold);
}

/* ---------- 问答主体 ---------- */
.faq-body__grid {
  display: grid;
  gap: 40px;
}
.faq-group + .faq-group {
  margin-top: 46px;
}
.faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 6px;
}
.faq-group__no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--amber);
  letter-spacing: 0.06em;
  flex: none;
}
.faq-group__title {
  font-size: 21px;
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--cold);
  margin: 0;
}

.page-faq .accordion__item {
  transition: box-shadow var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease);
}
.page-faq .accordion__item[data-open] {
  box-shadow: inset 2px 0 0 var(--amber);
}
.page-faq .faq-answer {
  color: var(--cold);
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
  max-width: 70ch;
}
.page-faq [id^="q-"] {
  scroll-margin-top: calc(var(--header-h) + 28px);
}

.page-faq .faq-maint-visual {
  margin: 22px 0 26px;
}

/* ---------- 右侧窄栏 ---------- */
.faq-rail__box {
  background: linear-gradient(180deg, rgba(79, 166, 255, 0.07), transparent 46%), var(--panel);
  border-left: 2px solid var(--signal);
}
.faq-rail__title {
  font-size: 19px;
  line-height: 1.35;
  color: var(--cold);
  margin: 0 0 10px;
}
.faq-rail__box p {
  color: var(--silver);
  font-size: 14px;
  line-height: 1.75;
  margin: 0;
}
.faq-rail__contacts {
  list-style: none;
  margin: 20px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line-soft);
  display: grid;
  gap: 12px;
}
.faq-rail__contacts .contact-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}
.faq-rail__contacts a {
  color: var(--night);
  font-size: 14px;
  text-decoration: none;
  overflow-wrap: anywhere;
}
.faq-rail__contacts a:hover,
.faq-rail__contacts a:focus-visible {
  text-decoration: underline;
}
.faq-rail__links {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.faq-rail__links a {
  display: block;
  padding: 10px 0;
  color: var(--cold);
  font-size: 14px;
  text-decoration: none;
  border-top: 1px solid var(--line-soft);
  transition: color var(--dur-fast) var(--ease), padding-left var(--dur-fast) var(--ease);
}
.faq-rail__links li:last-child a {
  border-bottom: 1px solid var(--line-soft);
}
.faq-rail__links a::before {
  content: "→ ";
  color: var(--amber);
}
.faq-rail__links a:hover,
.faq-rail__links a:focus-visible {
  color: var(--night);
  padding-left: 4px;
}

/* ---------- 收尾 ---------- */
.faq-closing__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 26px 0 8px;
  border-top: 1px solid var(--line);
}
.faq-closing__text {
  margin: 0;
  color: var(--silver);
  font-size: 15px;
  line-height: 1.7;
  max-width: 62ch;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq {
    --faq-rail-w: 280px;
  }
  .faq-index-list li {
    padding: 12px 0;
  }
}

@media (min-width: 1000px) {
  .faq-intro__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 52px;
    align-items: start;
  }
  .page-faq .table-wrap {
    margin-bottom: 48px;
  }
}

@media (min-width: 1060px) {
  .faq-body__grid {
    grid-template-columns: minmax(0, 1fr) var(--faq-rail-w);
    gap: var(--faq-gap);
    align-items: start;
  }
  .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }
}

@media (max-width: 560px) {
  .page-faq .data-table th,
  .page-faq .data-table td {
    padding: 11px 12px;
  }
  .faq-closing__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-symptom-grid .tag,
  .page-faq .faq-rail__links a,
  .page-faq .accordion__item {
    transition: none;
  }
  .page-faq .faq-rail {
    position: static;
  }
}
<<<END>>>