.page-faq {
  --faq-rail-w: 216px;
  --faq-gap: clamp(28px, 4vw, 56px);
}

.page-faq .breadcrumb {
  max-width: var(--wrap-wide);
  margin: 0 auto;
  padding: 20px var(--gut) 0;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-intro {
  padding-top: clamp(28px, 5vw, 58px);
  padding-bottom: clamp(28px, 4vw, 52px);
}

.page-faq .faq-intro .mono-label {
  display: inline-block;
  margin-bottom: 18px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--chili);
}

.page-faq .faq-intro .lede {
  max-width: 58ch;
  margin-top: 22px;
  color: var(--muted);
}

/* ---------- 双栏骨架 ---------- */

.page-faq .faq-body {
  padding-top: clamp(20px, 3vw, 36px);
  padding-bottom: clamp(40px, 6vw, 84px);
}

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

.page-faq .faq-rail {
  margin-bottom: 36px;
}

.page-faq .faq-rail__title {
  display: block;
  margin-bottom: 14px;
  color: var(--standby);
}

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

.page-faq .faq-rail__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--warm);
  border-color: var(--chili);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--chili);
}

.page-faq .faq-rail__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--faint);
  max-width: 30ch;
}

/* ---------- 问答组 ---------- */

.page-faq .faq-group {
  padding-top: clamp(30px, 4vw, 48px);
  border-top: 1px solid var(--line);
  scroll-margin-top: 130px;
}

.page-faq .faq-group:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-group .exhibit {
  margin-bottom: 20px;
}

.page-faq .faq-group__lede {
  margin: 0 0 22px;
  max-width: 52ch;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-panel-top {
  margin-bottom: 22px;
}

.page-faq .faq-panel-top .faq-group__lede {
  margin-bottom: 20px;
}

/* ---------- 图片 ---------- */

.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-deep);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-faq .faq-figure--square img {
  aspect-ratio: 1 / 1;
}

.page-faq .faq-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  line-height: 1.7;
  color: var(--standby);
}

/* ---------- 问答条目 ---------- */

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

.page-faq .faq-item:last-of-type {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 18px 16px;
  border-left: 3px solid transparent;
  cursor: pointer;
  list-style: none;
  transition: background-color .2s var(--ease), border-color .2s var(--ease);
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item > summary:hover {
  background: rgba(247, 243, 234, .035);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--chili);
  outline-offset: 2px;
}

.page-faq .faq-item[open] > summary {
  border-left-color: var(--chili);
  background: rgba(240, 74, 60, .06);
}

.page-faq .faq-item__num {
  flex: none;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--standby);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.65;
  letter-spacing: -.01em;
  color: var(--warm);
}

.page-faq .faq-item__mark {
  flex: none;
  position: relative;
  width: 18px;
  height: 18px;
  margin-left: auto;
  margin-top: 4px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--chili);
  transform: translate(-50%, -50%);
  transition: transform .25s var(--ease), opacity .25s var(--ease);
}

.page-faq .faq-item__mark::before {
  width: 13px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  width: 2px;
  height: 13px;
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 2px 20px 26px 37px;
  border-left: 3px solid var(--chili);
}

.page-faq .faq-item__body p {
  margin: 0 0 14px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

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

/* ---------- 自查步骤清单 ---------- */

.page-faq .check-list {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}

.page-faq .check-list li {
  margin: 0 0 6px;
}

.page-faq .check-list li:last-child {
  margin-bottom: 0;
}

.page-faq .check-list label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 11px 14px;
  border: 1px solid var(--line);
  cursor: pointer;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .check-list label:hover {
  border-color: var(--line-strong);
  background: rgba(247, 243, 234, .025);
}

.page-faq .check-list input[type="checkbox"] {
  -webkit-appearance: none;
  appearance: none;
  flex: none;
  position: relative;
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  border: 1px solid var(--line-strong);
  background: transparent;
  cursor: pointer;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .check-list input[type="checkbox"]:checked {
  border-color: var(--pitch);
  background: var(--pitch);
}

.page-faq .check-list input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border: solid var(--ink-deep);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.page-faq .check-list input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--chili);
  outline-offset: 2px;
}

.page-faq .check-list__no {
  flex: none;
  min-width: 20px;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--standby);
}

.page-faq .check-list__text {
  flex: 1 1 auto;
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--muted);
  transition: color .2s var(--ease);
}

.page-faq .check-list input[type="checkbox"]:checked ~ .check-list__text {
  color: var(--faint);
}

/* ---------- 尾部路径 ---------- */

.page-faq .faq-next {
  padding-top: clamp(32px, 4vw, 52px);
  padding-bottom: clamp(40px, 6vw, 76px);
  background: var(--ink-deep);
}

.page-faq .faq-next .exhibit {
  margin-bottom: 22px;
}

.page-faq .faq-next__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-next__list li {
  background: var(--ink-deep);
}

.page-faq .faq-next__list .path-link {
  display: block;
  padding: 18px 18px;
  font-size: 16px;
  line-height: 1.6;
  color: var(--muted);
  text-decoration: none;
  transition: color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-next__list .path-link:hover,
.page-faq .faq-next__list .path-link:focus-visible {
  color: var(--warm);
  background: rgba(240, 74, 60, .07);
}

/* ---------- 断点 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-panel-top {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 32px;
    align-items: start;
  }

  .page-faq .faq-panel-top .faq-group__lede {
    margin-bottom: 0;
  }

  .page-faq .faq-panel-top .faq-figure {
    margin: 0;
  }

  .page-faq .faq-next__list {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: var(--faq-rail-w) 1fr;
    gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 122px;
    margin-bottom: 0;
    padding-left: 22px;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
  }

  .page-faq .faq-rail__list a {
    width: 100%;
    padding: 11px 0;
    border: 0;
    font-size: 14.5px;
    color: var(--standby);
  }

  .page-faq .faq-rail__list a:hover,
  .page-faq .faq-rail__list a:focus-visible {
    color: var(--chili);
  }

  .page-faq .faq-rail__note {
    margin-top: 22px;
  }

  .page-faq .faq-panel-top {
    grid-template-columns: 1fr 340px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-item__body {
    padding-right: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-item > summary,
  .page-faq .check-list label,
  .page-faq .faq-next__list .path-link {
    transition: none;
  }
}