.page-faq {
  --faq-line: 2px solid var(--ink);
  --faq-gap: clamp(18px, 3vw, 32px);
  --faq-pad: clamp(46px, 7vw, 92px);
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 4vw, 40px) 0 clamp(36px, 6vw, 72px);
  border-bottom: var(--faq-line);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -72px;
  right: -96px;
  width: 300px;
  height: 300px;
  background: var(--cyan);
  opacity: 0.14;
  transform: rotate(-4deg);
  pointer-events: none;
}

.page-faq .faq-hero .crumbs {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(22px, 4vw, 40px);
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-faq .faq-hero__main h1 {
  margin: 10px 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.02;
  font-size: clamp(2rem, 7.4vw, 3.9rem);
  max-width: 16em;
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 44em;
  font-size: 17px;
  line-height: 1.75;
  color: var(--rock);
}

.page-faq .faq-hero__aside {
  display: grid;
  gap: 0;
  border-top: var(--faq-line);
}

.page-faq .faq-fact {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--sand);
}

.page-faq .faq-fact__v {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.7rem, 5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--flame);
  min-width: 2.6em;
}

.page-faq .faq-fact__l {
  font-size: 15px;
  line-height: 1.6;
  color: var(--rock);
}

/* ---------- 高频三问 ---------- */
.page-faq .faq-top {
  padding: var(--faq-pad) 0 clamp(24px, 4vw, 44px);
}

.page-faq .faq-quick {
  display: grid;
  gap: 20px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-faq .faq-quick__card {
  position: relative;
  padding: 22px 22px 24px;
  border: var(--faq-line);
  background: var(--cream);
}

.page-faq .faq-quick__card--dark {
  background: var(--rock);
  color: var(--cream);
  border-color: var(--ink);
}

.page-faq .faq-quick__card--sand {
  background: var(--sand);
}

.page-faq .faq-quick__q {
  margin: 0;
  font-weight: 900;
  letter-spacing: -0.01em;
  font-size: clamp(1.05rem, 3vw, 1.3rem);
  line-height: 1.35;
}

.page-faq .faq-quick__a {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.72;
  color: var(--rock);
}

.page-faq .faq-quick__card--dark .faq-quick__a {
  color: var(--sand);
}

.page-faq .faq-quick__num {
  display: block;
  margin-top: 18px;
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(2rem, 9vw, 3.4rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--glow);
}

/* ---------- 问答组 ---------- */
.page-faq .faq-block {
  padding: var(--faq-pad) 0;
  border-top: var(--faq-line);
}

.page-faq .faq-block__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-faq .faq-block__aside .sec-index {
  display: block;
  line-height: 0.9;
}

.page-faq .faq-block__aside .sec-title {
  margin: 8px 0 0;
}

.page-faq .faq-block__note {
  margin: 16px 0 0;
  max-width: 30em;
  font-size: 16px;
  line-height: 1.72;
  color: var(--rock);
}

.page-faq .faq-block__aside .figure {
  margin: 24px 0 0;
}

.page-faq .faq-acc {
  display: grid;
  gap: 14px;
}

.page-faq .faq-item {
  border: var(--faq-line);
  background: var(--cream);
  transition: box-shadow 0.2s ease;
}

.page-faq .faq-item[data-open] {
  box-shadow: var(--shadow);
}

.page-faq .faq-item__q {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .faq-q {
  width: 100%;
  min-height: 56px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  margin: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.page-faq .faq-q:hover {
  background: var(--sand);
}

.page-faq .faq-q:focus-visible {
  outline: 3px solid var(--flame);
  outline-offset: -3px;
}

.page-faq .faq-q__num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--slate);
  transition: color 0.18s ease;
}

.page-faq .faq-item[data-open] .faq-q__num {
  color: var(--flame);
}

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

.page-faq .faq-q__chev {
  width: 11px;
  height: 11px;
  flex: none;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-item[data-open] .faq-q__chev {
  transform: rotate(-135deg) translate(-2px, -2px);
  border-color: var(--flame);
}

.page-faq .faq-a {
  padding: 18px 18px 22px;
  background: var(--sand);
  border-top: 1px solid var(--slate);
}

.page-faq .faq-a p {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink);
}

@media (min-width: 720px) {
  .page-faq .faq-a {
    padding: 20px 26px 24px 62px;
  }
}

.page-faq .faq-link {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--clay);
  padding-bottom: 1px;
  transition: border-color 0.18s ease, color 0.18s ease;
}

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

/* ---------- 收束 ---------- */
.page-faq .faq-tail {
  padding: 0 0 clamp(48px, 7vw, 96px);
}

.page-faq .faq-tail__box {
  position: relative;
  padding: clamp(28px, 5vw, 52px);
  background: var(--rock);
  color: var(--cream);
  border: var(--faq-line);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.page-faq .faq-tail__box::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 220px;
  height: 220px;
  background: var(--cyan);
  opacity: 0.22;
  transform: rotate(-4deg);
  pointer-events: none;
}

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

.page-faq .faq-tail .sec-index--light {
  display: block;
  line-height: 0.9;
  color: transparent;
  -webkit-text-stroke: 1px var(--glow);
}

.page-faq .faq-tail .sec-title {
  margin: 8px 0 0;
  color: var(--cream);
}

.page-faq .faq-tail__lead p {
  margin: 16px 0 0;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--sand);
}

.page-faq .faq-tail__actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 28px;
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-faq .faq-quick {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .page-faq .faq-quick__card:first-child {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    align-items: end;
    gap: 24px;
  }

  .page-faq .faq-quick__card:first-child .faq-quick__num {
    margin-top: 0;
    text-align: right;
  }

  .page-faq .faq-quick__card:first-child .faq-quick__a {
    max-width: 52em;
  }

  .page-faq .faq-block__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: clamp(34px, 5vw, 64px);
  }

  .page-faq .faq-block__grid--flip {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }

  .page-faq .faq-block__grid--flip .faq-block__aside {
    order: 2;
  }

  .page-faq .faq-block__grid--flip .faq-acc {
    order: 1;
  }

  .page-faq .faq-block__aside {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-faq .faq-q {
    padding: 16px 22px;
  }

  .page-faq .faq-tail__box {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: 32px;
  }

  .page-faq .faq-tail__actions {
    margin-top: 0;
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-q,
  .page-faq .faq-q__chev,
  .page-faq .faq-q__num,
  .page-faq .faq-link {
    transition: none;
  }
}