.page-faq {
  --faq-hair: rgba(147, 163, 177, .18);
  --faq-hair-strong: rgba(147, 163, 177, .34);
  --faq-card: rgba(22, 34, 46, .72);
  --faq-gap: clamp(28px, 5vw, 72px);
  color: var(--paper);
}

.page-faq .faq-crumbs {
  padding-top: calc(var(--bar-h) + 16px);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 4.5vw, 56px) 0 clamp(44px, 6vw, 84px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -15% -25% auto -25%;
  height: 135%;
  pointer-events: none;
  background:
    linear-gradient(118deg, rgba(46, 230, 214, .13) 0%, rgba(46, 230, 214, 0) 46%),
    linear-gradient(298deg, rgba(255, 138, 61, .14) 0%, rgba(255, 138, 61, 0) 42%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(147, 163, 177, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(147, 163, 177, .05) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .8), transparent 80%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .8), transparent 80%);
}

.page-faq .faq-hero .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: end;
}

.page-faq .faq-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cool);
}

.page-faq .faq-hero__title {
  margin: 20px 0 0;
  font-size: clamp(32px, 6.2vw, 68px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: .015em;
  color: var(--paper);
  text-wrap: balance;
}

.page-faq .faq-hero__lead {
  margin: 22px 0 0;
  max-width: 620px;
  font-size: 17px;
  line-height: 1.85;
  color: rgba(245, 247, 249, .80);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__meta {
  margin: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--cool);
}

.page-faq .faq-hero__media .media-frame {
  border: 1px solid var(--faq-hair-strong);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .media-frame__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 数字速览 ---------- */

.page-faq .faq-snap {
  padding: clamp(40px, 5.5vw, 80px) 0;
  border-top: 1px solid var(--faq-hair);
  border-bottom: 1px solid var(--faq-hair);
  background: linear-gradient(180deg, rgba(22, 34, 46, .55), rgba(14, 23, 32, 0));
}

.page-faq .faq-snap__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: center;
}

.page-faq .faq-snap__title {
  margin: 0;
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: .02em;
}

.page-faq .faq-snap__lead {
  margin: 14px 0 0;
  max-width: 420px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--cool);
}

.page-faq .faq-snap__kpis {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 28px;
  border: 1px solid var(--faq-hair);
  background: var(--faq-hair);
}

.page-faq .faq-snap__kpi {
  padding: 20px 18px;
  background: var(--ink-0);
  border-top: 2px solid var(--orange);
}

.page-faq .faq-snap__kpi-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 28px);
  letter-spacing: .01em;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-snap__kpi-label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--cool);
}

.page-faq .faq-snap__media .media-frame {
  border: 1px solid var(--faq-hair-strong);
  border-radius: var(--radius);
  overflow: hidden;
}

/* ---------- 问答区 ---------- */

.page-faq .faq-ask {
  padding: clamp(44px, 6vw, 88px) 0;
}

.page-faq .faq-ask .section__title {
  color: var(--paper);
}

.page-faq .faq-ask .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .chip {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  padding: 8px 14px;
  border: 1px solid var(--faq-hair-strong);
  border-radius: var(--radius);
  background: transparent;
  color: var(--cool);
  cursor: pointer;
  transition: color .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
}

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

.page-faq .chip[aria-pressed="true"] {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--ink-0);
}

.page-faq .chip--repair[aria-pressed="true"] {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink-0);
}

.page-faq .chip--train[aria-pressed="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-0);
}

.page-faq .faq-list {
  display: grid;
  gap: 8px;
  margin-top: 28px;
}

.page-faq .faq-item {
  position: relative;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background: var(--faq-card);
  scroll-margin-top: calc(var(--bar-h) + 28px);
  transition: border-color .24s var(--ease), background .24s var(--ease);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--orange);
}

.page-faq .faq-item[data-filter-tag~="train"]::before,
.page-faq .faq-item[data-filter-tag~="partner"]::before {
  background: var(--cyan);
}

.page-faq .faq-item:hover {
  border-color: var(--faq-hair-strong);
}

.page-faq .faq-item[open] {
  border-color: var(--faq-hair-strong);
  background: rgba(22, 34, 46, .92);
}

.page-faq .faq-item[hidden] {
  display: none;
}

.page-faq .faq-item:target {
  border-color: var(--tag);
  box-shadow: inset 0 0 0 1px rgba(230, 197, 92, .28);
}

.page-faq .faq-item:target .faq-item__q .faq-item__text {
  color: var(--tag);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 22px 18px 26px;
  cursor: pointer;
  list-style: none;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cool);
  transition: color .2s var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
  color: var(--cyan);
}

.page-faq .faq-item[data-filter-tag~="repair"][open] .faq-item__q::after,
.page-faq .faq-item[data-filter-tag~="warranty"][open] .faq-item__q::after,
.page-faq .faq-item[data-filter-tag~="care"][open] .faq-item__q::after {
  color: var(--orange);
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--tag);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__a {
  padding: 16px 26px 22px 26px;
  border-top: 1px solid var(--faq-hair);
  background-color: rgba(14, 23, 32, .5);
  background-image:
    linear-gradient(rgba(147, 163, 177, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(147, 163, 177, .055) 1px, transparent 1px);
  background-size: 24px 24px;
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 660px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(245, 247, 249, .80);
}

.page-faq .empty-note {
  margin-top: 24px;
  padding: 20px 22px;
  border: 1px dashed var(--faq-hair-strong);
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.8;
  color: var(--cool);
}

.page-faq .empty-note[hidden] {
  display: none;
}

/* ---------- 联络收尾 ---------- */

.page-faq .faq-outro {
  padding: clamp(48px, 6.5vw, 96px) 0;
  border-top: 1px solid var(--faq-hair);
  background: linear-gradient(180deg, rgba(22, 34, 46, .7), rgba(14, 23, 32, 0) 88%);
}

.page-faq .faq-outro__box {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: start;
}

.page-faq .faq-outro__title {
  margin: 0;
  font-size: clamp(26px, 4.2vw, 42px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: .02em;
  color: var(--paper);
}

.page-faq .faq-outro__body {
  margin: 18px 0 0;
  max-width: 620px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(245, 247, 249, .80);
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-outro__contact {
  margin: 0;
  padding: 22px;
  display: grid;
  gap: 18px;
  border: 1px solid var(--faq-hair-strong);
  border-radius: var(--radius);
  background: rgba(14, 23, 32, .6);
}

.page-faq .faq-outro__contact-row dt {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cool);
}

.page-faq .faq-outro__contact-row dd {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-outro__foot {
  margin: 34px 0 0;
  font-size: 13px;
  line-height: 1.9;
  color: var(--cool);
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-item__q {
    font-size: 18px;
    padding: 20px 24px 20px 28px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, .92fr);
    gap: var(--faq-gap);
    align-items: end;
  }

  .page-faq .faq-snap__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: var(--faq-gap);
    align-items: center;
  }

  .page-faq .faq-outro__box {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
    gap: 54px;
  }

  .page-faq .faq-list {
    gap: 10px;
  }

  .page-faq .faq-item__a {
    padding: 18px 28px 26px 68px;
  }

  .page-faq .faq-item__q {
    padding-left: 28px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero__media {
    margin-bottom: 6px;
  }

  .page-faq .faq-snap__kpis {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .chip,
  .page-faq .faq-item,
  .page-faq .faq-item__q::after {
    transition: none;
  }
}