.page-faq {
  --faq-line: rgba(11, 20, 32, 0.10);
  --faq-line-soft: rgba(11, 20, 32, 0.07);
  --faq-radius: 10px;
  --faq-sticky-h: 72px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-top: clamp(24px, 5vw, 46px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 44px);
  margin-top: clamp(20px, 3.4vw, 34px);
  align-items: start;
}

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

.page-faq .faq-hero__main h1 {
  margin: 12px 0 0;
  font-size: clamp(30px, 7.4vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.012em;
  color: var(--ink);
}

.page-faq .faq-hero__main .lede {
  margin-top: 18px;
  max-width: 52ch;
  font-size: clamp(15px, 2.3vw, 17px);
  line-height: 1.85;
  color: var(--steel);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(22px, 3.4vw, 30px);
}

.page-faq .faq-hero__aside {
  min-width: 0;
  padding-top: 6px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-hero__aside .annotation {
  display: block;
  margin: 12px 0 14px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-faq .faq-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--mist);
  border: 1px solid var(--mist);
  border-radius: var(--faq-radius);
  overflow: hidden;
}

.page-faq .faq-hero__stats li {
  background: var(--white);
  padding: 14px 12px 15px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-faq .faq-hero__num {
  font-size: clamp(21px, 4vw, 28px);
  font-weight: 800;
  line-height: 1;
  color: var(--ublue);
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__unit {
  font-size: 11.5px;
  line-height: 1.45;
  color: var(--steel);
}

/* ---------- 通用小标题 ---------- */

.page-faq .faq-head {
  max-width: 60ch;
  margin-bottom: clamp(22px, 4vw, 36px);
}

.page-faq .faq-head h2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 4.6vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-head__lede {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--steel);
}

/* ---------- 分类磁贴墙 ---------- */

.page-faq .faq-tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(212px, 1fr));
  gap: 10px;
}

.page-faq .faq-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 122px;
  padding: 18px 16px 16px;
  border: 1px solid var(--mist);
  border-radius: var(--faq-radius);
  background: var(--white);
  color: var(--ink);
  text-decoration: none;
  transition: transform var(--dur) ease, border-color var(--dur) ease,
    box-shadow var(--dur) ease;
}

.page-faq .faq-tile:hover,
.page-faq .faq-tile:focus-visible {
  transform: translateY(-2px);
  border-color: var(--cyan);
  box-shadow: var(--shadow);
  outline: none;
}

.page-faq .faq-tile__num {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ublue);
}

.page-faq .faq-tile__label {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}

.page-faq .faq-tile__desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
}

.page-faq .faq-tile .badge {
  position: absolute;
  top: 14px;
  right: 14px;
}

.page-faq .faq-media {
  margin: clamp(26px, 4vw, 44px) 0 0;
  border-radius: var(--faq-radius);
  overflow: hidden;
  border: 1px solid var(--mist);
}

/* ---------- 问答组 ---------- */

.page-faq .faq-group {
  scroll-margin-top: 28px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 5vw, 54px);
  padding-top: clamp(26px, 4vw, 40px);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.page-faq .faq-group__num {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--ublue);
  padding-top: 2px;
}

.page-faq .faq-group__head h3 {
  margin: 0;
  font-size: clamp(19px, 3.4vw, 25px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--ink);
  letter-spacing: -0.005em;
}

.page-faq .faq-group .disclosure {
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-group .disclosure__trigger {
  width: 100%;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 15px 0;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: var(--ink);
  transition: color var(--dur) ease;
}

.page-faq .faq-group .disclosure__trigger:hover {
  color: var(--ublue);
}

.page-faq .faq-group .disclosure__label {
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.65;
  min-width: 0;
}

.page-faq .faq-group .disclosure__panel > p {
  margin: 0;
  padding: 0 0 18px;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--steel);
}

.page-faq .faq-tail-media {
  margin: clamp(36px, 6vw, 60px) 0 0;
  border-radius: var(--faq-radius);
  overflow: hidden;
  border: 1px solid var(--faq-line);
}

/* ---------- 回顶 ---------- */

.page-faq .to-top {
  bottom: calc(var(--faq-sticky-h) + 16px);
}

/* ---------- 底部反馈条 ---------- */

.page-faq .faq-sticky {
  position: sticky;
  bottom: 0;
  z-index: 30;
  margin-top: clamp(30px, 5vw, 48px);
  background: var(--ublue);
  color: var(--white);
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 -12px 28px -22px rgba(11, 20, 32, 0.7);
}

.page-faq .faq-sticky__inner {
  max-width: var(--shell-w);
  margin: 0 auto;
  padding: 13px var(--gutter);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.page-faq .faq-sticky__copy {
  min-width: 0;
  flex: 1 1 300px;
}

.page-faq .faq-sticky__title {
  margin: 0;
  font-size: 15px;
  font-weight: 800;
  line-height: 1.4;
  color: #ffffff;
}

.page-faq .faq-sticky__note {
  margin: 4px 0 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.84);
}

.page-faq .faq-sticky__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  flex: 0 0 auto;
}

.page-faq .faq-sticky__actions .btn--primary {
  background: #ffffff;
  color: var(--ublue);
  border-color: #ffffff;
}

.page-faq .faq-sticky__actions .btn--primary:hover {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--ublue-deep);
}

.page-faq .faq-sticky__actions .btn--ghost {
  background: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.55);
}

.page-faq .faq-sticky__actions .btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 响应式 ---------- */

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.72fr) minmax(238px, 0.58fr);
    align-items: end;
    gap: clamp(34px, 4vw, 56px);
  }

  .page-faq .faq-hero__aside {
    border-top: 0;
    padding-top: 0;
    border-left: 1px solid var(--faq-line);
    padding-left: clamp(20px, 2.4vw, 32px);
  }

  .page-faq .faq-tiles {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-group .disclosure__panel > p {
    padding-left: 34px;
  }

  .page-faq .faq-group__head {
    padding-left: 0;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-tiles {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }
}

@media (max-width: 620px) {
  .page-faq .faq-sticky__inner {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .page-faq .faq-sticky__note {
    font-size: 11.5px;
    margin-top: 3px;
  }

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

  .page-faq .faq-sticky__actions .btn {
    flex: 1 1 0;
    justify-content: center;
    text-align: center;
  }

  .page-faq .faq-tile {
    min-height: 0;
  }

  .page-faq .faq-hero__num {
    font-size: 20px;
  }

  .page-faq .faq-hero__unit {
    font-size: 11px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tile,
  .page-faq .faq-group .disclosure__trigger {
    transition: none;
  }

  .page-faq .faq-tile:hover,
  .page-faq .faq-tile:focus-visible {
    transform: none;
  }
}