.page-faq {
  --faq-max: 1200px;
  --faq-idx-w: 250px;
  display: block;
  background: var(--bg);
  color: var(--silver);
  font-family: var(--font-sans);
}

/* ===== 首屏：纸白横带 ===== */
.page-faq .faq-lede {
  background: var(--paper);
  color: var(--ink);
  padding: 20px 20px 32px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-lede__in {
  max-width: var(--faq-max);
  margin: 0 auto;
}

.page-faq .faq-lede .crumbs {
  margin-bottom: 20px;
}

.page-faq .faq-lede .crumbs a {
  color: var(--ink-soft);
  text-decoration: none;
}

.page-faq .faq-lede .crumbs a:hover {
  color: var(--signal);
}

.page-faq .faq-lede .crumbs__sep {
  color: var(--grey);
}

.page-faq .faq-lede .crumbs__item[aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
}

.page-faq .faq-lede .eyebrow {
  margin: 0;
  color: var(--ink-soft);
}

.page-faq .faq-lede__title {
  margin: 10px 0 0;
  font-size: 34px;
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-faq .faq-lede__text {
  margin: 14px 0 0;
  max-width: 660px;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-faq .faq-lede__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--ink-soft);
}

.page-faq .faq-lede__meta li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-faq .faq-lede__meta li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--signal);
  flex: 0 0 auto;
}

/* ===== 双栏骨架 ===== */
.page-faq .faq-layout {
  max-width: var(--faq-max);
  margin: 0 auto;
  padding: 26px 20px 72px;
}

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

/* ===== 分类索引 ===== */
.page-faq .faq-index {
  margin: 0 -20px 30px;
  padding: 0 20px;
}

.page-faq .faq-index__head {
  display: none;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--grey);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-faq .faq-index__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-index__list > li {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--grey);
  font-size: 13.5px;
  text-decoration: none;
  white-space: nowrap;
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--paper);
  border-color: var(--line-hi);
  background: var(--panel-lift);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .08em;
  color: var(--violet);
}

.page-faq .faq-index__label {
  font-weight: 600;
}

.page-faq .faq-index__count {
  margin-left: auto;
  padding-left: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--grey);
}

/* ===== 章节 ===== */
.page-faq .faq-sect {
  scroll-margin-top: calc(var(--bar-h) + 24px);
  margin-bottom: 52px;
}

.page-faq .faq-sect:last-of-type {
  margin-bottom: 0;
}

.page-faq .faq-sect .sect-head {
  margin-bottom: 12px;
}

.page-faq .faq-sect__lead {
  margin: 0 0 18px;
  max-width: 640px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--grey);
}

/* ===== 服务清单 ===== */
.page-faq .svc-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .svc {
  background: var(--panel);
  padding: 20px 18px 24px;
  transition: background .18s var(--ease);
}

.page-faq .svc:hover {
  background: var(--panel-lift);
}

.page-faq .svc__no {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--violet);
}

.page-faq .svc__name {
  margin: 0 0 14px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .svc__row {
  margin: 0 0 11px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--silver);
}

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

.page-faq .svc__k {
  display: block;
  margin-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--grey);
}

.page-faq .svc__row a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s var(--ease);
}

.page-faq .svc__row a:hover {
  border-bottom-color: var(--signal);
}

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

.page-faq .faq-fig figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.65;
  letter-spacing: .03em;
  color: var(--grey);
}

/* ===== 问答档案卡 ===== */
.page-faq .qa-list {
  border-top: 1px solid var(--line);
}

.page-faq .qa {
  border-bottom: 1px solid var(--line);
  transition: border-color .18s var(--ease);
}

.page-faq .qa:hover,
.page-faq .qa[open] {
  border-bottom-color: var(--line-hi);
}

.page-faq .qa__q {
  position: relative;
  display: block;
  padding: 17px 46px 17px 2px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--silver);
  cursor: pointer;
  list-style: none;
  transition: color .18s var(--ease);
}

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

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

.page-faq .qa__q:hover {
  color: var(--paper);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.page-faq .qa__q::after {
  content: "";
  position: absolute;
  right: 10px;
  top: 50%;
  width: 12px;
  height: 2px;
  margin-top: -1px;
  background: var(--grey);
  transition: background .18s var(--ease);
}

.page-faq .qa__q::before {
  content: "";
  position: absolute;
  right: 15px;
  top: 50%;
  width: 2px;
  height: 12px;
  margin-top: -6px;
  background: var(--grey);
  transform-origin: center;
  transition: transform .18s var(--ease), background .18s var(--ease);
}

.page-faq .qa[open] .qa__q {
  color: var(--paper);
}

.page-faq .qa[open] .qa__q::after {
  background: var(--signal);
}

.page-faq .qa[open] .qa__q::before {
  transform: scaleY(0);
}

.page-faq .qa__a {
  padding: 0 24px 22px 2px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
}

.page-faq .qa__a p {
  margin: 0 0 10px;
}

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

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s var(--ease);
}

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

.page-faq .qa-steps {
  counter-reset: qs;
  display: grid;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .qa-steps li {
  counter-increment: qs;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--silver);
}

.page-faq .qa-steps li::before {
  content: counter(qs, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--signal);
}

/* ===== 客服通道 ===== */
.page-faq .faq-support {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding: 24px 20px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .faq-channels {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-channels li {
  display: grid;
  gap: 4px;
}

.page-faq .faq-channels__k {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--grey);
}

.page-faq .faq-channels__v {
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-note {
  margin: 22px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--grey);
}

.page-faq .faq-note a {
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid var(--line-hi);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-note a:hover {
  color: var(--signal);
  border-color: var(--signal);
}

.page-faq .faq-support__fig {
  margin: 0;
  max-width: 260px;
}

/* ===== 平板 ===== */
@media (min-width: 640px) {
  .page-faq .svc-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .qa__a {
    padding-right: 56px;
  }
}

/* ===== 桌面：索引常驻 + 内容画布 ===== */
@media (min-width: 1024px) {
  .page-faq .faq-lede {
    padding: 26px 32px 44px;
  }

  .page-faq .faq-lede__title {
    font-size: 56px;
  }

  .page-faq .faq-lede__text {
    font-size: 17.5px;
  }

  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: var(--faq-idx-w) minmax(0, 1fr);
    gap: 64px;
    padding: 48px 32px 96px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar-h) + 28px);
    align-self: start;
    margin: 0;
    padding: 0;
  }

  .page-faq .faq-index__head {
    display: block;
  }

  .page-faq .faq-index__list {
    display: block;
    overflow: visible;
    padding: 0;
    border-top: 1px solid var(--line);
  }

  .page-faq .faq-index__list > li {
    display: block;
  }

  .page-faq .faq-index__link {
    position: relative;
    padding: 12px 6px 12px 14px;
    border: 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
  }

  .page-faq .faq-index__link::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 2px;
    height: 16px;
    margin-top: -8px;
    background: var(--signal);
    transform: scaleY(0);
    transform-origin: center;
    transition: transform .18s var(--ease);
  }

  .page-faq .faq-index__link:hover::before,
  .page-faq .faq-index__link:focus-visible::before {
    transform: scaleY(1);
  }

  .page-faq .svc__name {
    font-size: 19px;
  }
}

@media (min-width: 1180px) {
  .page-faq .svc-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-support {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 40px;
    padding: 32px 30px;
    align-items: center;
  }

  .page-faq .faq-support__fig {
    max-width: 250px;
    justify-self: end;
  }
}

/* ===== 动效收敛 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
  }
}