.page-faq {
  --faq-idx-w: 236px;
  --faq-volt-soft: rgba(200, 255, 61, 0.08);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(26px, 4.5vw, 54px) 0 clamp(22px, 3vw, 36px);
  border-bottom: 1px solid var(--grid);
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 5.2vw, 3.1rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--chalk);
}

.page-faq .faq-hero__lede {
  margin: 16px 0 0;
  max-width: 46ch;
  color: var(--mist);
  font-size: 1rem;
  line-height: 1.85;
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}

.page-faq .faq-hero__facts li {
  background: var(--panel);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-size: 0.84rem;
  color: var(--mist);
  line-height: 1.5;
}

.page-faq .faq-hero__facts b {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--volt);
}

.page-faq .faq-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

/* ---------- 目录 + 问答双栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 44px);
  padding: clamp(24px, 4vw, 46px) 0 clamp(40px, 6vw, 72px);
}

.page-faq .faq-index {
  background: var(--panel);
  border: 1px solid var(--grid);
  border-radius: var(--radius-lg);
  padding: 14px 14px 12px;
}

.page-faq .faq-index__head {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  border: 1px solid var(--grid);
  border-radius: 999px;
  white-space: nowrap;
  color: var(--chalk);
  font-size: 0.83rem;
  text-decoration: none;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--mist);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--volt);
  border-color: var(--volt);
  background: var(--faq-volt-soft);
}

.page-faq .faq-index__note {
  margin: 10px 0 0;
  font-size: 0.78rem;
  color: var(--mist);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--bar-h) + 20px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 6vw, 68px);
  padding-top: clamp(26px, 4vw, 46px);
  border-top: 1px solid var(--grid);
}

.page-faq .faq-group__idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--electric);
}

.page-faq .faq-group:target .faq-group__idx {
  color: var(--volt);
}

.page-faq .faq-group h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  line-height: 1.16;
  color: var(--chalk);
}

.page-faq .faq-group__desc {
  margin: 10px 0 0;
  max-width: 46ch;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: clamp(16px, 2.6vw, 24px) 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--grid);
  border-radius: var(--radius-lg);
}

.page-faq .faq-figure__cap {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 色带图例 ---------- */
.page-faq .faq-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding: 12px 14px;
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-faq .faq-legend__band {
  display: block;
  width: min(100%, 340px);
  height: auto;
}

.page-faq .faq-legend__note {
  margin: 0;
  font-size: 0.8rem;
  color: var(--mist);
}

/* ---------- 问答组 ---------- */
.page-faq .accordion-group {
  margin-top: clamp(16px, 2.4vw, 24px);
}

.page-faq .accordion-group__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.page-faq .faq-group__count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-faq .accordion__item {
  border-left: 2px solid transparent;
  transition: border-color var(--t) , background var(--t);
}

.page-faq .accordion__item:has(.accordion__head[aria-expanded="true"]) {
  border-left-color: var(--volt);
  background: var(--faq-volt-soft);
}

/* ---------- 移动端图文并排 ---------- */
.page-faq .faq-media {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.6vw, 26px);
  margin-top: clamp(16px, 2.6vw, 24px);
}

.page-faq .faq-figure--tall {
  margin: 0;
  max-width: 420px;
}

/* ---------- 结尾引导 ---------- */
.page-faq .faq-cta {
  margin: 0 0 clamp(36px, 6vw, 72px);
  padding: clamp(20px, 3.4vw, 36px);
  border-left: 4px solid var(--volt);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--pitch) 0%, var(--pitch-deep) 100%);
  display: grid;
  gap: 18px;
}

.page-faq .faq-cta__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--volt);
}

.page-faq .faq-cta h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.25rem, 2.6vw, 1.7rem);
  line-height: 1.2;
  color: var(--chalk);
}

.page-faq .faq-cta p {
  margin: 10px 0 0;
  max-width: 46ch;
  font-size: 0.93rem;
  line-height: 1.8;
  color: rgba(242, 246, 242, 0.82);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-idx-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar-h) + 18px);
    background: transparent;
    border: 0;
    border-left: 1px solid var(--grid);
    border-radius: 0;
    padding: 4px 0 4px 0;
  }

  .page-faq .faq-index__head {
    padding-left: 14px;
  }

  .page-faq .faq-index__list {
    display: block;
    overflow: visible;
    padding: 0;
    margin-top: 12px;
  }

  .page-faq .faq-index__list li + li {
    margin-top: 2px;
  }

  .page-faq .faq-index__link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: 10px 6px 10px 14px;
    white-space: normal;
    line-height: 1.5;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--volt);
    background: var(--faq-volt-soft);
  }

  .page-faq .faq-index__note {
    padding-left: 14px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-media {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }
}

@media (min-width: 820px) {
  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}