.page-faq {
  --faq-accent: var(--cyan);
  --faq-rule: var(--line-soft);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 24px 0 34px;
  background-image:
    repeating-linear-gradient(0deg, var(--line-soft) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(90deg, var(--line-soft) 0 1px, transparent 1px 56px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -14%;
  right: -10%;
  width: 52%;
  height: 128%;
  background: linear-gradient(150deg, var(--ink-2) 0%, var(--graphite) 100%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 68%);
  opacity: .78;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 26px;
}

.page-faq .faq-hero__text .breadcrumbs {
  margin-bottom: 12px;
}

.page-faq .faq-hero__text .eyebrow {
  margin-bottom: 8px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-narrow);
  font-size: var(--h1);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--cream);
  margin: 0 0 16px;
}

.page-faq .faq-hero .lede {
  max-width: 36rem;
  margin: 0;
}

.page-faq .faq-hero__meta {
  list-style: none;
  margin: 26px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  font-size: 14px;
  color: var(--mist);
}

.page-faq .faq-hero__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-hero__meta .mono {
  color: var(--orange);
  font-size: 17px;
  letter-spacing: 0.02em;
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-2);
  overflow: hidden;
}

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

/* ---------- 两列主体 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 30px;
  padding-top: 40px;
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-narrow);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: var(--rock);
}

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

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

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  background: var(--ink-2);
  color: var(--cream);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .18s var(--ease), background-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-faq .faq-index__link:hover {
  border-color: var(--cyan-line);
  background: var(--cyan-soft);
}

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

/* ---------- 问答组 ---------- */
.page-faq .faq-groups {
  min-width: 0;
}

.page-faq .faq-group {
  min-width: 0;
  margin-bottom: 46px;
  scroll-margin-top: calc(var(--nav-h-condensed) + 22px);
}

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

.page-faq .faq-group--cyan { --faq-accent: var(--cyan); }
.page-faq .faq-group--moss { --faq-accent: var(--moss); }
.page-faq .faq-group--orange { --faq-accent: var(--orange); }
.page-faq .faq-group--clay { --faq-accent: var(--clay); }
.page-faq .faq-group--mist { --faq-accent: var(--mist); }

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  column-gap: 12px;
  row-gap: 6px;
  align-items: baseline;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 2px;
}

.page-faq .faq-group__num {
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--faq-accent);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-narrow);
  font-size: var(--h2);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--rock);
}

/* ---------- 单条问答 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--cream);
  transition: color .18s var(--ease);
}

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

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

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

.page-faq .qa__mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 6px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--faq-accent);
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}

.page-faq .qa__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .qa__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__a {
  background: rgba(46, 125, 107, .13);
  border-left: 2px solid var(--faq-accent);
  padding: 14px 16px 16px;
  margin: 0 0 16px;
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 36rem;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 组内配图 ---------- */
.page-faq .faq-figure {
  margin: 20px 0 4px;
  max-width: 640px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  background: var(--ink-2);
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--rock);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-ask {
  margin-top: 56px;
  padding: 46px 0 54px;
  background: var(--graphite);
  border-top: 1px solid var(--line);
}

.page-faq .faq-ask__inner {
  display: grid;
  gap: 26px;
}

.page-faq .faq-ask h2 {
  margin: 6px 0 14px;
  font-family: var(--font-narrow);
  font-size: var(--h2);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-faq .faq-ask p {
  margin: 0 0 12px;
  max-width: 36rem;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-ask a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
}

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

.page-faq .faq-ask__contact {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.01em;
  color: var(--rock);
}

.page-faq .faq-ask__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.page-faq .faq-ask__actions .btn {
  border-bottom: 0;
}

/* ---------- 中屏及以上 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 40px 0 48px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 52px;
    align-items: end;
  }

  .page-faq .faq-hero__media {
    transform: translateY(-12px);
  }

  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
    padding-top: 56px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--nav-h-condensed) + 18px);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-top: 1px solid var(--line);
  }

  .page-faq .faq-index__link {
    display: grid;
    grid-template-columns: 28px minmax(0, 1fr);
    align-items: center;
    gap: 10px;
    padding: 12px 2px;
    border: 0;
    border-bottom: 1px solid var(--line-soft);
    background: transparent;
    white-space: normal;
    font-size: 15px;
  }

  .page-faq .faq-index__link:hover {
    background: transparent;
    color: var(--cyan);
    border-bottom-color: var(--cyan-line);
  }

  .page-faq .faq-ask__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-ask__side {
    padding-top: 6px;
  }
}

/* ---------- 宽屏错位 ---------- */
@media (min-width: 1120px) {
  .page-faq .faq-group:nth-child(even) {
    margin-left: 34px;
  }

  .page-faq .faq-hero__meta {
    gap: 10px 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .qa__q,
  .page-faq .faq-index__link {
    transition-duration: .01ms !important;
  }
}