.page-faq {
  --faq-cut: 18px;
  --faq-ink-soft: #3B3F52;
  --faq-panel-up: var(--c-panel-up);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-top: clamp(18px, 3vw, 30px);
}

.page-faq .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-body);
}

.page-faq .breadcrumb a {
  color: var(--c-body);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--c-orange);
  border-bottom-color: var(--c-orange);
}

.page-faq .breadcrumb__sep {
  color: var(--c-line);
  margin: 0 8px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(26px, 4vw, 54px) 0 clamp(34px, 5vw, 64px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 5vw, 48px);
  align-items: start;
}

.page-faq .faq-hero__copy {
  min-width: 0;
}

.page-faq .faq-hero__lede {
  max-width: 56ch;
  margin-top: 20px;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 34px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-hero__facts div {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-faq .faq-hero__facts dt {
  margin: 0;
  font-size: clamp(1.05rem, 2.2vw, 1.45rem);
  line-height: 1.1;
  color: var(--c-orange);
}

.page-faq .faq-hero__facts dd {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-body);
}

.page-faq .faq-hero__visual {
  margin: 0;
  min-width: 0;
}

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

/* ---------- 顶部横向索引 ---------- */
.page-faq .faq-index {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(14, 23, 51, 0.94);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-index__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 10px;
  padding-bottom: 10px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__label {
  flex: 0 0 auto;
  color: var(--c-cyan);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  white-space: nowrap;
}

.page-faq .faq-index__list .index-link {
  display: inline-block;
  padding: 6px 12px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-body);
  text-decoration: none;
  border-bottom: 2px solid var(--c-line);
  border-radius: 0;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-index__list .index-link:hover,
.page-faq .faq-index__list .index-link:focus-visible {
  color: var(--c-orange);
  border-bottom-color: var(--c-orange);
}

.page-faq .faq-index__list .index-link[aria-current="true"] {
  color: var(--c-orange);
  border-bottom-color: var(--c-orange);
  background: var(--c-panel);
}

/* ---------- 分类区块 ---------- */
.page-faq .faq-sec {
  padding-top: clamp(38px, 6vw, 76px);
  scroll-margin-top: 74px;
}

.page-faq .faq-sec__band {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
  padding: 16px 20px;
  margin-bottom: 24px;
  background: var(--c-panel);
  border-left: 3px solid var(--c-orange);
}

.page-faq .faq-sec__num {
  flex: 0 0 auto;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--c-orange);
}

.page-faq .faq-sec__intro {
  flex: 1 1 260px;
  min-width: 0;
}

.page-faq .faq-sec__intro h2 {
  margin: 0 0 6px;
}

.page-faq .faq-sec__intro p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-body);
  max-width: 68ch;
}

.page-faq .faq-sec__count {
  flex: 0 0 auto;
  margin-left: auto;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-cyan);
}

/* ---------- 问答列表 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  position: relative;
  background: var(--c-panel);
  border: 1px solid var(--c-line);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-item:hover {
  background: var(--faq-panel-up);
  border-color: var(--c-line);
  transform: translateY(-2px);
}

.page-faq .faq-item[open] {
  background: var(--faq-panel-up);
}

.page-faq .faq-item[open]::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 16px;
  height: 16px;
  background: var(--c-orange);
  clip-path: polygon(0 0, 100% 0, 0 100%);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin: 0;
  padding: 18px 22px;
  font-size: clamp(1rem, 1.5vw, 1.1rem);
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-paper);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: -2px;
}

.page-faq .faq-item__marker {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  margin-top: 0.5em;
  border: 1px solid var(--c-cyan);
  background: transparent;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-item__marker {
  background: var(--c-cyan);
  border-color: var(--c-cyan);
}

.page-faq .faq-item__a {
  padding: 0 22px 20px 22px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-body);
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 72ch;
}

.page-faq .faq-item__a a {
  color: var(--c-violet);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s var(--ease);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--c-orange);
}

/* ---------- 双栏（问答 + 图） ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-faq .faq-split__figure {
  margin: 0;
  min-width: 0;
}

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

/* ---------- 底部引导 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(46px, 7vw, 90px);
  padding: clamp(34px, 5vw, 64px) 0;
  background: var(--c-paper);
  color: var(--c-ink);
}

.page-faq .faq-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: center;
}

.page-faq .faq-cta__copy h2 {
  color: var(--c-ink);
  margin: 0 0 10px;
}

.page-faq .faq-cta__copy p {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

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

.page-faq .faq-cta__actions .btn--ghost {
  color: var(--c-ink);
  border-color: var(--c-ink);
}

.page-faq .faq-cta__actions .btn--ghost:hover,
.page-faq .faq-cta__actions .btn--ghost:focus-visible {
  color: var(--c-paper);
  background: var(--c-ink);
  border-color: var(--c-ink);
}

/* ---------- 平板 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-item__a {
    padding-left: 46px;
  }

  .page-faq .faq-sec__band {
    padding: 20px 26px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 76px);
  }
}

@media (min-width: 980px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 32px;
    align-items: start;
  }

  .page-faq .faq-split__figure {
    position: sticky;
    top: 88px;
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: 40px;
  }

  .page-faq .faq-cta__actions {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-index__list .index-link {
    transition: none;
  }

  .page-faq .faq-item:hover {
    transform: none;
  }
}