.page-faq {
  --accent: var(--orange);
  --faq-rail: 232px;
  --faq-soft: rgba(46, 66, 86, .55);
  display: block;
  background: var(--ink-0);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: 28px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-hero__split {
  display: grid;
  gap: 28px;
  margin-top: 24px;
}

.page-faq h1 {
  margin: 0;
  max-width: 20ch;
  font-size: clamp(30px, 5.6vw, 58px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -.03em;
  color: var(--paper);
}

.page-faq .faq-intro {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--rule);
  border: 1px solid var(--rule);
}

.page-faq .faq-stat {
  background: var(--ink-1);
  padding: 14px 12px 16px;
}

.page-faq .faq-stat dt {
  margin: 0 0 10px;
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-faq .faq-stat dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.6vw, 24px);
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-bookmark {
  margin-top: 16px;
}

@media (min-width: 960px) {
  .page-faq .faq-hero__split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: end;
  }
}

/* ---------- 主体外壳：左索引 + 右问答 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: 32px;
  padding-top: 36px;
  padding-bottom: 72px;
}

@media (min-width: 1024px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 64px;
    padding-top: 56px;
  }
}

.page-faq .faq-index {
  align-self: start;
  border: 1px solid var(--rule);
  background: var(--ink-1);
  padding: 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--mist);
}

.page-faq .faq-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__list li {
  position: relative;
  padding: 0;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border: 1px solid var(--rule);
  color: var(--mist);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--paper);
  border-color: var(--accent);
  background: rgba(255, 138, 61, .08);
}

.page-faq .faq-index__list a svg {
  flex: none;
  color: var(--accent);
}

.page-faq .faq-index__range {
  display: none;
}

@media (min-width: 1024px) {
  .page-faq .faq-index {
    position: sticky;
    top: 32px;
    border: 0;
    background: transparent;
    padding: 0;
  }

  .page-faq .faq-index__title {
    margin-bottom: 16px;
  }

  .page-faq .faq-index__list {
    display: block;
    padding-left: 20px;
    border-left: 1px solid var(--rule);
  }

  .page-faq .faq-index__list li + li {
    margin-top: 2px;
  }

  .page-faq .faq-index__list a {
    display: grid;
    grid-template-columns: 18px minmax(0, 1fr);
    gap: 4px 10px;
    align-items: center;
    padding: 9px 0;
    border: 0;
    font-size: 14px;
    background: transparent;
  }

  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    background: transparent;
    border-color: transparent;
  }

  .page-faq .faq-index__list a svg {
    grid-row: 1 / 3;
    align-self: start;
    margin-top: 2px;
  }

  .page-faq .faq-index__range {
    display: block;
    grid-column: 2;
    font-size: 11px;
    letter-spacing: .04em;
    color: var(--mist);
    opacity: .6;
  }

  .page-faq .faq-index__list li::before {
    content: "";
    position: absolute;
    left: -21px;
    top: 16px;
    width: 11px;
    height: 2px;
    background: var(--accent);
    opacity: 0;
    transition: opacity var(--dur) var(--ease);
  }

  .page-faq .faq-index__list li:hover::before,
  .page-faq .faq-index__list li:focus-within::before {
    opacity: 1;
  }
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 96px;
}

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

@media (min-width: 1024px) {
  .page-faq .faq-group + .faq-group {
    margin-top: 76px;
  }
}

.page-faq .faq-group__head {
  border-top: 1px solid var(--rule);
  padding-top: 20px;
}

.page-faq .faq-group__kicker {
  display: block;
  margin-bottom: 12px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--accent);
}

.page-faq .faq-group__desc {
  margin: 12px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-group__desc a {
  color: var(--paper);
  text-underline-offset: 3px;
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 24px 0 0;
  border: 1px solid var(--rule);
  background: var(--ink-1);
  overflow: hidden;
}

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

.page-faq .faq-figure .figure__cap {
  padding: 12px 16px;
  border-top: 1px solid var(--rule);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  margin-top: 28px;
  border-top: 1px solid var(--rule);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 6px 14px;
  align-items: center;
  padding: 17px 2px;
  cursor: pointer;
  list-style: none;
  transition: background-color var(--dur) var(--ease);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::marker {
  content: none;
}

.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  background: rgba(27, 58, 84, .55);
}

.page-faq .faq-q {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--accent);
  align-self: center;
}

.page-faq .faq-q__text {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
}

@media (min-width: 768px) {
  .page-faq .faq-q__text {
    font-size: 17px;
  }
}

.page-faq .faq-q__icon {
  position: relative;
  justify-self: end;
  align-self: center;
  width: 12px;
  height: 12px;
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-q__icon::before,
.page-faq .faq-q__icon::after {
  content: "";
  position: absolute;
  background: var(--mist);
  transition: background-color var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .faq-q__icon::before {
  left: 0;
  top: 5.5px;
  width: 12px;
  height: 1px;
}

.page-faq .faq-q__icon::after {
  left: 5.5px;
  top: 0;
  width: 1px;
  height: 12px;
}

.page-faq .faq-item[open] .faq-q__icon {
  transform: rotate(180deg);
}

.page-faq .faq-item[open] .faq-q__icon::before,
.page-faq .faq-item[open] .faq-q__icon::after {
  background: var(--accent);
}

.page-faq .faq-item[open] .faq-q__icon::after {
  opacity: 0;
}

/* ---------- 展开区 ---------- */
.page-faq .faq-a {
  position: relative;
  margin: 0 0 20px;
  padding: 20px 18px 22px 22px;
  border-left: 2px solid var(--accent);
  background-color: var(--ink-1);
  overflow: hidden;
}

.page-faq .faq-a::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 40px;
  background-image:
    repeating-linear-gradient(0deg, var(--faq-soft) 0 1px, transparent 1px 8px),
    repeating-linear-gradient(90deg, var(--faq-soft) 0 1px, transparent 1px 8px);
  background-size: 8px 8px;
  -webkit-mask-image: linear-gradient(#000, transparent);
  mask-image: linear-gradient(#000, transparent);
  pointer-events: none;
}

.page-faq .faq-a p {
  position: relative;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-a p + p {
  margin-top: 12px;
}

.page-faq .faq-a a {
  color: var(--paper);
  text-underline-offset: 3px;
}

.page-faq .faq-a .list {
  position: relative;
  margin-top: 12px;
}

.page-faq .faq-a .list li {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 人工协助区 ---------- */
.page-faq .faq-group--human {
  margin-top: 64px;
}

@media (min-width: 1024px) {
  .page-faq .faq-group--human {
    margin-top: 92px;
  }
}

.page-faq .faq-human {
  display: grid;
  gap: 1px;
  margin-top: 24px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-top: 2px solid var(--accent);
}

@media (min-width: 820px) {
  .page-faq .faq-human {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

.page-faq .faq-human__col {
  background: var(--ink-1);
  padding: 26px 22px 28px;
}

.page-faq .faq-human__col h3 {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--paper);
}

.page-faq .faq-human__col .list li {
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-human__contact {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-human__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__list a,
  .page-faq .faq-index__list li::before,
  .page-faq .faq-item > summary,
  .page-faq .faq-q__icon,
  .page-faq .faq-q__icon::before,
  .page-faq .faq-q__icon::after {
    transition: none;
  }

  .page-faq .faq-item[open] .faq-q__icon {
    transform: none;
  }
}