.page-faq {
  --faq-rail: 288px;
  --faq-hair: rgba(159, 179, 190, .3);
  display: block;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 26px 0 52px;
  background:
    radial-gradient(130% 90% at 80% 0%, rgba(42, 90, 99, .58) 0%, rgba(20, 49, 58, .22) 44%, rgba(13, 20, 24, 0) 72%),
    var(--ink);
  color: var(--fog);
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-hero .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cold);
}

.page-faq .faq-hero .breadcrumb a {
  color: var(--teal);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumb a:hover,
.page-faq .faq-hero .breadcrumb a:focus-visible {
  text-decoration: underline;
}

.page-faq .faq-hero__frame {
  position: relative;
  padding: 30px 18px 34px;
  border: 1px solid var(--rule-strong);
  background: linear-gradient(180deg, rgba(20, 49, 58, .5) 0%, rgba(13, 20, 24, .25) 100%);
}

.page-faq .faq-hero__frame::before,
.page-faq .faq-hero__frame::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--amber);
}

.page-faq .faq-hero__frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.page-faq .faq-hero__frame::after {
  right: -1px;
  bottom: -1px;
  border-top: 0;
  border-left: 0;
}

.page-faq .faq-hero__scale {
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 7px;
  background-image: repeating-linear-gradient(90deg, var(--cold) 0 1px, transparent 1px 26px);
  opacity: .45;
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 30px;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 16px;
  font-family: var(--font-head);
  font-size: clamp(30px, 6.2vw, 52px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-hero .lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--cold);
  max-width: 46em;
}

/* 搜索面板 */

.page-faq .search-panel {
  margin-top: 26px;
  padding: 14px 16px 12px;
  border: 1px solid var(--rule-strong);
  background: rgba(251, 252, 252, .04);
}

.page-faq .search-panel__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .28em;
  color: var(--cold);
}

.page-faq .search-panel__inner {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-faq .search-panel__input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 8px 2px;
  border: 0;
  border-bottom: 1px solid var(--rule-strong);
  background: transparent;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
}

.page-faq .search-panel__input::placeholder {
  color: rgba(159, 179, 190, .7);
}

.page-faq .search-panel__input:focus {
  outline: none;
  border-bottom-color: var(--teal);
}

.page-faq .search-panel__hint {
  margin: 10px 0 0;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cold);
}

/* 首屏配图 */

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

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--rule-strong);
  object-fit: cover;
  filter: saturate(.9);
}

.page-faq .faq-cap {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-faq .faq-cap--dark {
  color: var(--cold);
}

/* ---------- 答案区 ---------- */

.page-faq .faq-body {
  padding: 40px 0 56px;
  background: var(--fog);
  color: var(--bridge);
}

.page-faq .faq-layout {
  display: grid;
  gap: 32px;
}

.page-faq .faq-layout > * {
  min-width: 0;
}

.page-faq .faq-index {
  padding: 14px 14px 8px;
  border: 1px solid var(--rule-strong);
  background: var(--paper);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-index__link .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--dai);
}

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

.page-faq .faq-index__link:hover .mono,
.page-faq .faq-index__link:focus-visible .mono {
  color: var(--orange);
}

/* 分组 */

.page-faq .faq-group {
  padding-bottom: 8px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 40px;
  border-top: 1px solid var(--rule-strong);
  padding-top: 36px;
}

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

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

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(20px, 3.4vw, 26px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .faq-group__lede {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--dai);
  max-width: 52em;
}

/* 问答条目 */

.page-faq .qa-list {
  margin-top: 18px;
}

.page-faq .qa {
  padding: 20px 0 22px;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .qa:last-child {
  padding-bottom: 6px;
}

.page-faq .qa__q {
  display: flex;
  gap: 12px;
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -.005em;
  color: var(--ink);
}

.page-faq .qa__no {
  flex: 0 0 auto;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--dai);
}

.page-faq .qa__a {
  padding-left: 30px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--bridge);
}

.page-faq .qa__a p {
  margin: 0 0 .7em;
}

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

.page-faq .qa-em {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--orange);
}

.page-faq .qa-tag {
  display: inline-block;
  margin: 0 3px 0 0;
  padding: 1px 8px;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  background: rgba(42, 90, 99, .07);
  color: var(--dai);
  font-size: 12px;
  letter-spacing: .04em;
  white-space: nowrap;
}

.page-faq .qa__go {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 12px;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--rule-strong);
  color: var(--dai);
  font-size: 13.5px;
  letter-spacing: .02em;
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .qa__go:hover,
.page-faq .qa__go:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* 步骤列表 */

.page-faq .qa-steps {
  margin: 12px 0 12px;
  padding: 0;
  list-style: none;
}

.page-faq .qa-steps li {
  position: relative;
  padding-left: 34px;
  margin-bottom: 10px;
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .qa-steps li:last-child {
  margin-bottom: 0;
}

.page-faq .qa-steps li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  width: 23px;
  height: 20px;
  line-height: 19px;
  text-align: center;
  border: 1px solid rgba(228, 118, 42, .55);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .02em;
  color: var(--orange);
}

.page-faq .qa-steps {
  counter-reset: step;
}

/* 筛选示意条 */

.page-faq .faq-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 14px 0 4px;
  padding: 10px 12px;
  border: 1px solid var(--rule-strong);
  background: var(--paper);
}

.page-faq .faq-bar__seg {
  padding: 4px 10px;
  border: 1px solid var(--rule-strong);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-faq .faq-bar__seg.is-on {
  border-color: var(--orange);
  background: rgba(228, 118, 42, .09);
  color: var(--orange);
}

/* 搜索过滤反馈 */

.page-faq [data-searchable].is-dimmed {
  display: none;
}

.page-faq [data-searchable].is-match .qa__q {
  color: var(--dai);
}

/* ---------- 纠错与联系 ---------- */

.page-faq .faq-fix {
  padding: 52px 0 60px;
  background: var(--ink);
  color: var(--fog);
  border-top: 1px solid var(--rule);
}

.page-faq .faq-fix__grid {
  display: grid;
  gap: 30px;
}

.page-faq .faq-fix h2 {
  margin: 12px 0 14px;
  font-family: var(--font-head);
  font-size: clamp(24px, 4.6vw, 36px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-fix__copy > p {
  margin: 0 0 20px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--cold);
  max-width: 44em;
}

.page-faq .faq-fix__list {
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--rule);
}

.page-faq .faq-fix__list li {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
  color: var(--fog);
}

.page-faq .faq-fix__list .mono {
  flex: 0 0 48px;
  color: var(--cold);
  font-size: 12px;
  letter-spacing: .22em;
}

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

.page-faq .faq-fix__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--rule-strong);
  object-fit: cover;
  filter: saturate(.85);
}

/* ---------- 断点 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding: 34px 0 64px;
  }

  .page-faq .faq-hero__frame {
    padding: 40px 34px 42px;
  }

  .page-faq .faq-index {
    padding: 18px 18px 10px;
  }

  .page-faq .qa__a {
    padding-left: 34px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 46px;
    align-items: center;
  }

  .page-faq .faq-fix__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 52px;
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 10px;
  }

  .page-faq .faq-index__link {
    white-space: normal;
  }

  .page-faq .faq-hero {
    padding: 44px 0 76px;
  }
}

@media (min-width: 1400px) {
  .page-faq .faq-body {
    padding: 56px 0 72px;
  }

  .page-faq .faq-group + .faq-group {
    margin-top: 56px;
    padding-top: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .qa__go {
    transition: opacity .15s linear;
  }
}