.page-faq {
  --faq-ink-soft: rgba(16, 24, 21, 0.78);
  --faq-sticky: 32px;
  background: var(--c-mist);
  color: var(--c-ink);
  font-family: var(--f-body);
  padding-bottom: 0;
}

.page-faq h1,
.page-faq h2 {
  font-family: var(--f-heading);
  color: var(--c-ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  background: var(--c-paper);
  border-bottom: 1px solid var(--c-line);
  padding: 28px 0 56px;
}

.page-faq .faq-hero .crumbs {
  margin-bottom: 28px;
}

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

.page-faq .faq-hero__copy .label {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--c-green);
}

.page-faq h1 {
  margin: 0 0 18px;
  font-size: 30px;
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: 0.01em;
  max-width: 20ch;
}

.page-faq .faq-hero__lede {
  margin: 0 0 28px;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 16px;
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-stat__label {
  font-family: var(--f-label);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-line);
  text-transform: uppercase;
}

.page-faq .faq-stat__val {
  margin: 6px 0 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--c-green);
}

.page-faq .faq-hero__media {
  margin: 0;
  position: relative;
  overflow: hidden;
  aspect-ratio: 8 / 5;
  background: var(--c-green-deep);
  border: 1px solid var(--c-line);
}

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

.page-faq .faq-hero__media .media-frame__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  margin: 0;
  padding: 6px 12px;
  background: rgba(11, 42, 32, 0.86);
  color: var(--c-paper);
  font-family: var(--f-label);
  font-size: 12px;
  letter-spacing: 0.06em;
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-main {
  padding: 48px 0 0;
}

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

.page-faq .faq-index {
  margin-bottom: 40px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--f-label);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--c-green);
}

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

.page-faq .faq-index__item {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--c-line);
  background: var(--c-paper);
  color: var(--c-ink);
  font-family: var(--f-label);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-index__num {
  font-family: var(--f-data);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--c-away);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--c-away);
  color: var(--c-green);
}

.page-faq .faq-index__media {
  margin: 20px 0 0;
  position: relative;
  overflow: hidden;
  aspect-ratio: 8 / 5;
  background: var(--c-green-deep);
  border: 1px solid var(--c-line);
}

.page-faq .faq-index__media .media-frame__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 章节 ---------- */
.page-faq .faq-chapter {
  margin-bottom: 56px;
  scroll-margin-top: 24px;
}

.page-faq .faq-chapter__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--c-green);
}

.page-faq .faq-chapter__num {
  font-family: var(--f-heading);
  font-size: 34px;
  font-weight: 800;
  line-height: 1;
  color: var(--c-green);
  letter-spacing: -0.02em;
}

.page-faq .faq-chapter__title {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
}

/* ---------- 问答条目 ---------- */
.page-faq .qa-item {
  position: relative;
  margin-bottom: 12px;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  transition: border-color 0.22s var(--ease);
}

.page-faq .qa-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--c-away);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 0.26s var(--ease);
}

.page-faq .qa-item[open] {
  border-color: var(--c-green);
}

.page-faq .qa-item[open]::before {
  transform: scaleY(1);
}

.page-faq .qa-item__summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 18px 18px 20px;
  font-family: var(--f-label);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--c-ink);
  cursor: pointer;
  list-style: none;
  transition: color 0.2s var(--ease);
}

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

.page-faq .qa-item__summary:hover {
  color: var(--c-green);
}

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

.page-faq .qa-item__mark::before,
.page-faq .qa-item__mark::after {
  content: "";
  position: absolute;
  background: var(--c-brand);
  transition: transform 0.22s var(--ease), opacity 0.22s var(--ease);
}

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

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

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

.page-faq .qa-item__body {
  margin: 0 18px 0 20px;
  padding: 16px 0 20px;
  border-top: 1px solid var(--c-line);
}

.page-faq .qa-item__body p {
  margin: 0 0 12px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

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

.page-faq .qa-num {
  display: inline-block;
  padding: 1px 6px;
  background: var(--c-mist);
  color: var(--c-green);
  font-family: var(--f-data);
  font-variant-numeric: tabular-nums;
  font-size: 0.94em;
}

.page-faq .qa-item__meta {
  margin-top: 14px !important;
}

.page-faq .qa-item__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--f-label);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-green);
  text-decoration: none;
  border-bottom: 1px solid var(--c-away);
  padding-bottom: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .qa-item__link::after {
  content: "→";
  font-family: var(--f-body);
  color: var(--c-brand);
}

.page-faq .qa-item__link:hover,
.page-faq .qa-item__link:focus-visible {
  color: var(--c-brand);
  border-color: var(--c-brand);
}

/* ---------- 页尾行动区 ---------- */
.page-faq .faq-cta {
  margin-top: 48px;
  padding: 48px 0;
  background: var(--c-green);
  color: var(--c-paper);
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: 28px;
}

.page-faq .faq-cta h2 {
  margin: 10px 0 14px;
  font-size: 23px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--c-paper);
}

.page-faq .faq-cta p {
  margin: 0;
  max-width: 54ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(247, 245, 241, 0.82);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 40px 0 72px;
  }

  .page-faq h1 {
    font-size: 40px;
    max-width: 22ch;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
    align-items: end;
  }

  .page-faq .faq-hero__media {
    aspect-ratio: 3 / 2;
  }

  .page-faq .faq-main {
    padding-top: 64px;
  }

  .page-faq .faq-chapter {
    margin-bottom: 64px;
  }

  .page-faq .faq-chapter__num {
    font-size: 44px;
  }

  .page-faq .faq-chapter__title {
    font-size: 22px;
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 40px;
  }
}

@media (min-width: 1024px) {
  .page-faq h1 {
    font-size: 52px;
  }

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

  .page-faq .faq-index__item {
    flex: 0 0 auto;
  }

  .page-faq .faq-index__link {
    width: 100%;
    padding: 14px 10px 14px 0;
    border: 0;
    border-bottom: 1px solid var(--c-line);
    background: transparent;
    white-space: normal;
    justify-content: flex-start;
    transition: padding-left 0.2s var(--ease), color 0.2s var(--ease);
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    padding-left: 12px;
    background: var(--c-paper);
  }

  .page-faq .faq-index__media {
    margin-top: 24px;
    aspect-ratio: 4 / 3;
  }

  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: minmax(230px, 4fr) minmax(0, 8fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
    align-self: start;
    margin-bottom: 0;
  }

  .page-faq .faq-chapter {
    scroll-margin-top: 32px;
  }

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

  .page-faq .faq-chapter__title {
    font-size: 24px;
  }

  .page-faq .qa-item__summary {
    font-size: 17px;
    padding: 20px 22px 20px 24px;
  }

  .page-faq .qa-item__body {
    margin: 0 22px 0 24px;
    padding: 18px 0 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-item,
  .page-faq .qa-item::before,
  .page-faq .qa-item__mark::before,
  .page-faq .qa-item__mark::after,
  .page-faq .faq-index__link {
    transition: opacity 0.2s linear;
  }

  .page-faq .qa-item::before {
    transform: scaleY(1);
    opacity: 0;
  }

  .page-faq .qa-item[open]::before {
    opacity: 1;
  }
}