.page-faq {
  --faq-narrow: 880px;
  --faq-dim: rgba(199, 208, 219, .76);
  --faq-panel: rgba(14, 39, 69, .78);
  position: relative;
  background-color: var(--deep-900);
  background-image:
    linear-gradient(to right, rgba(29, 63, 102, .22) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(29, 63, 102, .22) 1px, transparent 1px);
  background-size: var(--grid-cell) var(--grid-cell);
  color: var(--silver);
  overflow-x: hidden;
}

.page-faq .section {
  padding-block: var(--space-section);
}

.page-faq .divider {
  margin: 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-intro {
  padding-top: 40px;
  padding-bottom: 56px;
}

.page-faq .breadcrumb {
  margin-bottom: 40px;
}

.page-faq .faq-title {
  max-width: 15em;
  margin: 14px 0 0;
  color: var(--porcelain);
  text-wrap: balance;
}

.page-faq .faq-lead {
  margin: 24px 0 0;
  color: var(--faq-dim);
  max-width: 40em;
}

.page-faq .faq-index-wrap {
  margin-top: 56px;
  border-top: 1px solid var(--line-soft);
  padding-top: 28px;
}

.page-faq .faq-index-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan-400);
  margin: 0 0 20px;
}

.page-faq .faq-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 20px;
  border: 1px solid var(--outline-silver);
  border-radius: 18px;
  background: linear-gradient(160deg, rgba(14, 39, 69, .55), rgba(7, 20, 38, .5));
  color: var(--silver);
  text-decoration: none;
  transition: border-color .2s var(--ease), transform .16s var(--ease), color .2s var(--ease);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  border-color: var(--cyan-400);
  color: var(--porcelain);
  transform: translateY(-2px);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--cyan-400);
}

.page-faq .faq-index__text {
  font-size: 15px;
  line-height: 1.5;
}

/* ---------- 01 两步收藏 ---------- */
.page-faq .faq-start__grid {
  margin-top: 44px;
}

.page-faq .faq-flow {
  display: block;
  width: 100%;
  height: auto;
  margin-bottom: 12px;
}

.page-faq .faq-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 20px;
}

.page-faq .faq-step {
  padding: 24px 22px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--lava-500);
  border-radius: 4px 22px 22px 4px;
  background: var(--faq-panel);
}

.page-faq .faq-step__num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--lava-500);
}

.page-faq .faq-step__title {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 400;
  color: var(--porcelain);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-dim);
}

.page-faq .faq-start__aside {
  margin-top: 32px;
}

.page-faq .faq-shot {
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-start__tip {
  margin: 18px 0 0;
  padding-left: 16px;
  border-left: 1px solid var(--cyan-400);
  font-size: 14px;
  line-height: 1.8;
  color: var(--faq-dim);
}

/* ---------- 问答筛选条 ---------- */
.page-faq .faq-filter-bar {
  position: sticky;
  top: 0;
  z-index: 6;
  padding: 14px 0 16px;
  background: linear-gradient(to bottom, rgba(7, 20, 38, .96) 60%, rgba(7, 20, 38, 0));
  backdrop-filter: blur(6px);
}

.page-faq .faq-filter-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--silver);
}

.page-faq .faq-filter {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-faq .faq-filter .tag {
  flex: 0 0 auto;
  white-space: nowrap;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-q {
  padding-top: 12px;
}

.page-faq .faq-group {
  max-width: var(--faq-narrow);
  margin: 0 auto 64px;
  scroll-margin-top: 96px;
}

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

.page-faq .faq-group-head {
  margin-bottom: 26px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-group-head .index-num {
  font-size: 26px;
  line-height: 1;
  margin: 0 0 12px;
  letter-spacing: .06em;
}

.page-faq .faq-group-head .section-title {
  margin: 0;
  font-size: clamp(24px, 4.4vw, 34px);
  font-weight: 400;
  color: var(--porcelain);
}

.page-faq .faq-group-head .section-note {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--faq-dim);
}

.page-faq .faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .accordion {
  border: 1px solid var(--outline-silver);
  border-radius: var(--radius-card);
  background: linear-gradient(160deg, rgba(14, 39, 69, .82), rgba(7, 20, 38, .86));
  transition: border-color .2s var(--ease), transform .16s var(--ease);
}

.page-faq .accordion:hover {
  border-color: rgba(33, 230, 193, .55);
  transform: translateY(-2px);
}

.page-faq .accordion[open] {
  border-color: var(--cyan-400);
}

.page-faq .accordion__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 22px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  line-height: 1.6;
  color: var(--porcelain);
  transition: color .2s var(--ease);
}

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

.page-faq .accordion__mark {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1.2;
  color: var(--cyan-400);
  transition: transform .2s var(--ease), color .2s var(--ease);
}

.page-faq .accordion[open] .accordion__mark {
  transform: rotate(45deg);
  color: var(--lava-500);
}

.page-faq .accordion__body {
  padding: 0 22px 22px;
  border-top: 1px solid var(--line-faint);
  margin-top: 0;
}

.page-faq .accordion__body p {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--faq-dim);
}

.page-faq .accordion__body a {
  color: var(--cyan-100);
  text-decoration: none;
  border-bottom: 1px solid rgba(33, 230, 193, .5);
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .accordion__body a:hover {
  color: var(--cyan-400);
  border-color: var(--cyan-400);
}

/* ---------- 06 联系 ---------- */
.page-faq .faq-help__grid {
  margin-top: 44px;
}

.page-faq .faq-help__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 0;
}

.page-faq .faq-help__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-contact {
  margin-top: 28px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-faint);
}

.page-faq .faq-contact__label {
  flex: 0 0 100%;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-faq .faq-contact__value {
  margin: 0;
  font-size: 16px;
  color: var(--porcelain);
  word-break: break-all;
}

.page-faq .faq-help__aside {
  margin-top: 40px;
  padding: 26px 24px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  background: linear-gradient(200deg, rgba(255, 106, 43, .12), rgba(14, 39, 69, .55) 55%);
}

.page-faq .faq-help__title {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 400;
  color: var(--porcelain);
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-help__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--faq-dim);
}

.page-faq .faq-help__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan-400);
}

.page-faq .faq-help__note {
  margin: 0 0 22px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--faq-dim);
}

/* ---------- 内链 ---------- */
.page-faq .faq-next {
  padding-bottom: 80px;
}

.page-faq .faq-next__title {
  margin: 40px 0 24px;
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 400;
  color: var(--porcelain);
}

.page-faq .faq-next__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-faq .faq-next__list a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  border: 1px solid var(--outline-silver);
  border-radius: 18px;
  text-decoration: none;
  transition: border-color .2s var(--ease), transform .16s var(--ease);
}

.page-faq .faq-next__list a:hover,
.page-faq .faq-next__list a:focus-visible {
  border-color: var(--cyan-400);
  transform: translateY(-2px);
}

.page-faq .faq-next__k {
  font-size: 15px;
  color: var(--porcelain);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .page-faq .faq-contact__label {
    flex: 0 0 110px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-intro {
    padding-top: 64px;
  }

  .page-faq .faq-index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-start__grid {
    align-items: start;
  }

  .page-faq .faq-start__aside {
    margin-top: 0;
  }

  .page-faq .faq-group {
    margin-bottom: 88px;
  }

  .page-faq .faq-next__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index a,
  .page-faq .accordion,
  .page-faq .accordion__mark,
  .page-faq .faq-next__list a {
    transition: none;
  }

  .page-faq .faq-index a:hover,
  .page-faq .accordion:hover,
  .page-faq .faq-next__list a:hover {
    transform: none;
  }
}