.page-faq {
  --faq-line: var(--c-mist);
  --faq-ink: var(--c-graphite);
  --faq-mono: var(--font-mono);
  --faq-note: 44px;
  background: var(--c-paper);
  color: var(--faq-ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  background: var(--c-green);
  color: var(--c-paper);
  padding: calc(var(--header-h) + 56px) 0 0;
  overflow: hidden;
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -140px;
  top: -140px;
  width: 400px;
  height: 400px;
  border: 1px solid rgba(242, 193, 78, 0.22);
  transform: rotate(45deg);
  pointer-events: none;
}
.page-faq .faq-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-faq .faq-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--faq-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(246, 241, 231, 0.7);
  margin: 0 0 40px;
}
.page-faq .faq-crumbs a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.page-faq .faq-crumbs a:hover,
.page-faq .faq-crumbs a:focus-visible {
  color: var(--c-paper);
  border-bottom-color: var(--c-gold);
}
.page-faq .faq-crumbs [aria-current] {
  color: var(--c-gold-hi);
}

.page-faq .faq-hero__eyebrow {
  color: var(--c-gold-hi);
  margin: 0 0 22px;
}
.page-faq .faq-hero__title {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(34px, 5.2vw, 68px);
  line-height: 1.1;
  letter-spacing: 0.01em;
  margin: 0 0 26px;
  max-width: 14ch;
}
.page-faq .faq-hero__lede {
  margin: 0 0 56px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(246, 241, 231, 0.84);
  max-width: 60ch;
}
.page-faq .faq-hero__media {
  border-top: 1px solid rgba(217, 138, 46, 0.55);
  margin: 0;
}

/* ---------- 主体区 ---------- */
.page-faq .faq-body {
  background: var(--c-paper);
  padding: 64px 0 88px;
}
.page-faq .faq-body__inner {
  display: grid;
  gap: 40px;
  min-width: 0;
}

/* 分类索引 */
.page-faq .faq-index {
  border-top: 1px solid var(--c-green);
  padding-top: 14px;
  min-width: 0;
}
.page-faq .faq-index__label {
  font-family: var(--faq-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--c-slate);
  margin: 0 0 14px;
}
.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}
.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 6px 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--faq-ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.page-faq .faq-index__no {
  font-family: var(--faq-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-slate);
  transition: color 0.18s var(--ease);
}
.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--c-green);
  border-bottom-color: var(--c-gold);
}
.page-faq .faq-index__list a:hover .faq-index__no,
.page-faq .faq-index__list a:focus-visible .faq-index__no {
  color: var(--c-gold);
}

/* 问答分栏 */
.page-faq .faq-sections {
  display: grid;
  gap: 64px;
  min-width: 0;
}
.page-faq .faq-cat {
  scroll-margin-top: calc(var(--header-h) + 24px);
  min-width: 0;
}
.page-faq .faq-cat__head {
  border-top: 1px solid var(--c-green);
  padding-top: 20px;
  margin-bottom: 8px;
}
.page-faq .faq-cat__head .eyebrow {
  margin: 0 0 14px;
}
.page-faq .faq-cat__title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--fs-h3);
  line-height: 1.3;
  color: var(--c-green);
  margin: 0 0 12px;
  max-width: 22ch;
}
.page-faq .faq-cat__lede {
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-slate);
  max-width: 56ch;
}
.page-faq .faq-cat__layout {
  display: grid;
  gap: 32px;
  min-width: 0;
}
.page-faq .faq-cat__aside {
  margin: 0;
  border-top: 1px solid var(--c-green);
  padding-top: 14px;
}
.page-faq .faq-cat__aside .media {
  margin: 0;
  border: 1px solid var(--c-mist);
}
.page-faq .faq-cat__aside figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-slate);
}

/* 问答列表 */
.page-faq .faq-list {
  border-bottom: 1px solid var(--faq-line);
  min-width: 0;
}
.page-faq .faq-item {
  border-top: 1px solid var(--faq-line);
  transition: border-top-color 0.2s var(--ease);
}
.page-faq .faq-item[open] {
  border-top-color: var(--c-gold);
}
.page-faq .faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: var(--faq-note) minmax(0, 1fr) 20px;
  align-items: start;
  gap: 12px;
  padding: 20px 0;
  -webkit-tap-highlight-color: transparent;
}
.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item > summary::marker {
  content: "";
}
.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 4px;
}
.page-faq .faq-item__no {
  font-family: var(--faq-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-slate);
  padding-top: 4px;
  transition: color 0.18s var(--ease);
}
.page-faq .faq-item[open] .faq-item__no {
  color: var(--c-gold);
}
.page-faq .faq-item__q {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.55;
  color: var(--c-green);
  letter-spacing: 0.005em;
}
.page-faq .faq-item[open] .faq-item__q {
  color: var(--c-green-deep);
}
.page-faq .faq-item__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  margin-top: 4px;
  color: var(--c-slate);
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}
.page-faq .faq-item__icon svg {
  width: 13px;
  height: 13px;
  display: block;
}
.page-faq .faq-item[open] .faq-item__icon {
  color: var(--c-gold);
  transform: rotate(90deg);
}

.page-faq .faq-item__answer {
  display: grid;
  grid-template-columns: var(--faq-note) minmax(0, 1fr) 20px;
  gap: 12px;
  padding: 0 0 24px;
  animation: faq-open 0.18s var(--ease);
}
.page-faq .faq-item__note {
  grid-column: 1;
  font-family: var(--faq-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-gold);
  padding-top: 3px;
}
.page-faq .faq-item__answer p {
  grid-column: 2;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-ink);
  max-width: 40em;
}
@keyframes faq-open {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 尾部引导 */
.page-faq .faq-tail {
  border-top: 1px solid var(--c-green);
  padding-top: 24px;
}
.page-faq .faq-tail__inner {
  display: grid;
  gap: 16px;
}
.page-faq .faq-tail__title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--fs-h3);
  line-height: 1.3;
  color: var(--c-green);
  margin: 0 0 8px;
}
.page-faq .faq-tail__links {
  display: grid;
  gap: 4px;
  justify-items: start;
}

/* ---------- 窄屏 ---------- */
@media (max-width: 560px) {
  .page-faq {
    --faq-note: 32px;
  }
  .page-faq .faq-hero {
    padding-top: calc(var(--header-h) + 36px);
  }
  .page-faq .faq-hero__title {
    max-width: none;
  }
  .page-faq .faq-hero__lede {
    margin-bottom: 40px;
  }
  .page-faq .faq-body {
    padding: 48px 0 64px;
  }
  .page-faq .faq-sections {
    gap: 52px;
  }
  .page-faq .faq-item__q {
    font-size: 15px;
  }
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-body__inner {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
  .page-faq .faq-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }
  .page-faq .faq-cat__title {
    font-size: var(--fs-h2);
  }
  .page-faq .faq-item__q {
    font-size: 18px;
  }
  .page-faq .faq-item__answer p {
    font-size: 16px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-body__inner {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 72px;
  }
  .page-faq .faq-cat--sub .faq-cat__layout {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 48px;
    align-items: start;
  }
  .page-faq .faq-hero__lede {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__answer {
    animation: none;
  }
  .page-faq .faq-item__icon,
  .page-faq .faq-index__list a,
  .page-faq .faq-crumbs a,
  .page-faq .faq-item {
    transition: none;
  }
}