.page-faq {
  color: var(--paper);
  padding-bottom: 72px;
}

.page-faq .breadcrumb {
  padding: 18px 0 6px;
  font-size: 13px;
}

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

.page-faq .breadcrumb a:hover {
  color: var(--lime);
}

.page-faq .breadcrumb__sep {
  margin: 0 8px;
  color: var(--gray);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 18px 0 8px;
  background: linear-gradient(180deg, var(--ink) 0%, var(--navy) 100%);
  border-bottom: 3px solid var(--moss);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 22px;
  align-items: end;
}

.page-faq .faq-hero__copy {
  min-width: 0;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(30px, 7vw, 50px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-transform: none;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  max-width: 34ch;
  margin: 0 0 18px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--gray);
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.page-faq .chip {
  display: inline-block;
  padding: 7px 14px;
  border: 2px solid var(--moss);
  background: var(--pine);
  color: var(--paper);
  font-size: 13px;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-faq .chip:hover,
.page-faq .chip:focus-visible {
  border-color: var(--lime);
  color: var(--lime);
}

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

.page-faq .faq-hero__figure .figure__frame {
  border: 3px solid var(--moss);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  padding: 0;
  margin: 26px 0 0;
  list-style: none;
  border: 2px solid var(--moss);
  background: var(--moss);
}

.page-faq .faq-stats .kpi {
  padding: 16px 18px;
  background: var(--pine);
}

.page-faq .faq-stats .kpi__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  color: var(--lime);
}

.page-faq .faq-stats .kpi__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--gray);
}

/* ---------- 分类索引与问题 ---------- */
.page-faq .faq-ask {
  padding: 44px 0 8px;
}

.page-faq .faq-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  padding: 14px 16px;
  margin: 0 0 26px;
  list-style: none;
  border-left: 4px solid var(--lime);
  background: var(--navy);
  font-size: 13px;
  color: var(--gray);
}

.page-faq .legend__swatch--lime {
  background: var(--lime);
}

.page-faq .legend__swatch--mist {
  background: var(--mist);
}

.page-faq .legend__swatch--orange {
  background: var(--orange);
}

.page-faq .legend__swatch--violet {
  background: #6E5BC4;
}

.page-faq .faq-layout {
  display: grid;
  gap: 22px;
  align-items: start;
}

.page-faq .faq-index {
  display: flex;
  gap: 10px;
  padding: 2px 0 10px;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__tab {
  flex: 0 0 auto;
  width: 186px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2px 10px;
  padding: 12px 14px;
  border: 2px solid var(--moss);
  background: var(--pine);
  color: var(--paper);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-faq .faq-index__tab:hover {
  border-color: var(--mist);
}

.page-faq .faq-index__num {
  grid-row: span 2;
  font-size: 12px;
  color: var(--gray);
  letter-spacing: 0.08em;
}

.page-faq .faq-index__label {
  font-size: 15px;
  font-weight: 700;
}

.page-faq .faq-index__hint {
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--gray);
}

.page-faq .faq-index__tab[aria-selected="true"] {
  border-color: var(--lime);
  background: #0d2018;
  box-shadow: inset 4px 0 0 var(--lime);
}

.page-faq .faq-index__tab[aria-selected="true"] .faq-index__label {
  color: var(--lime);
}

.page-faq .faq-index__tab[aria-selected="true"] .faq-index__num {
  color: var(--lime);
}

.page-faq .faq-answers {
  min-width: 0;
}

.page-faq .faq-panel__title {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 24px;
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .faq-panel__lede {
  margin: 0 0 18px;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--gray);
}

/* ---------- 可展开条目 ---------- */
.page-faq .qa {
  margin-bottom: 10px;
  border: 2px solid var(--moss);
  background: var(--pine);
  transition: border-color 200ms var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--lime);
  background: #0e2419;
}

.page-faq .qa__q {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 15px 16px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q:hover {
  color: var(--lime);
}

.page-faq .qa__marker {
  flex: 0 0 auto;
  width: 11px;
  height: 11px;
  margin-top: 7px;
  border: 2px solid var(--mist);
  transform: rotate(45deg);
  transition: transform 180ms var(--ease), background 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .qa[open] .qa__marker {
  border-color: var(--lime);
  background: var(--lime);
  transform: rotate(135deg);
}

.page-faq .qa__a {
  max-width: 46ch;
  padding: 0 16px 18px 39px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray);
}

.page-faq .qa__a p {
  margin: 0 0 10px;
}

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

.page-faq .qa__a a {
  color: var(--mist);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa__a a:hover {
  color: var(--lime);
}

.page-faq .qa__steps {
  margin: 12px 0 12px;
  padding: 0;
  list-style: none;
  counter-reset: qa-step;
}

.page-faq .qa__steps > li {
  position: relative;
  padding-left: 40px;
  margin: 8px 0;
  counter-increment: qa-step;
}

.page-faq .qa__steps > li::before {
  content: counter(qa-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  padding: 2px 5px;
  border: 1px solid var(--moss);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--lime);
}

/* ---------- 数据与纠错区配图 ---------- */
.page-faq .faq-data__body {
  display: grid;
  gap: 20px;
}

.page-faq .faq-data__col {
  min-width: 0;
}

.page-faq .faq-data__figure {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-data__figure .figure__frame {
  border: 3px solid var(--moss);
  box-shadow: var(--shadow-hard);
}

/* ---------- 联系区 ---------- */
.page-faq .faq-contact {
  padding: 52px 0 0;
  margin-top: 40px;
  border-top: 3px solid var(--moss);
  background: linear-gradient(180deg, var(--navy) 0%, var(--ink) 100%);
}

.page-faq .faq-contact__panel {
  display: grid;
  gap: 20px;
  padding: 26px 20px;
  border: 3px solid var(--moss);
  background: var(--pine);
}

.page-faq .faq-contact__intro h2 {
  margin: 8px 0 10px;
  font-family: var(--font-serif);
  font-size: clamp(22px, 4.6vw, 30px);
  line-height: 1.25;
  color: var(--paper);
}

.page-faq .faq-contact__intro p {
  margin: 0;
  max-width: 32ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray);
}

.page-faq .faq-contact__list {
  margin: 0;
  border-top: 2px solid var(--moss);
}

.page-faq .faq-contact__row {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 2px solid var(--moss);
}

.page-faq .faq-contact__label {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-contact__value {
  margin: 0;
  font-size: 15px;
  color: var(--paper);
  overflow-wrap: break-word;
}

.page-faq .faq-contact__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-contact__panel {
    padding: 34px 30px;
    grid-template-columns: 1.2fr 1fr;
    align-items: start;
  }

  .page-faq .faq-contact__note,
  .page-faq .faq-contact__actions {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 5fr 7fr;
    gap: 34px;
  }

  .page-faq .faq-data__body {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: start;
    gap: 24px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-ask {
    padding-top: 56px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 270px minmax(0, 1fr);
    gap: 34px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 118px;
    flex-direction: column;
    gap: 8px;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-index__tab {
    width: 100%;
  }

  .page-faq .qa__q {
    padding: 17px 20px;
  }

  .page-faq .qa__a {
    padding: 0 20px 20px 43px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__marker,
  .page-faq .chip,
  .page-faq .faq-index__tab {
    transition: none;
  }

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