.page-faq {
  --faq-rail-w: 236px;
  --faq-cut: 16px;
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  padding: clamp(20px, 3vw, 34px) 0 clamp(56px, 8vw, 100px);
  overflow-x: hidden;
}

.page-faq .breadcrumbs {
  margin-bottom: clamp(18px, 3vw, 30px);
}

/* ---------- 页头 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  border-top: 3px solid var(--amber);
  padding-top: clamp(22px, 3vw, 38px);
  margin-bottom: clamp(36px, 6vw, 68px);
}

.page-faq .faq-hero::before {
  content: "";
  display: block;
  grid-column: 1 / -1;
  height: 5px;
  width: min(240px, 46%);
  margin-bottom: clamp(6px, 1vw, 14px);
  background: linear-gradient(90deg, var(--coral) 0 42px, var(--amber-bright) 42px 100%);
}

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

.page-faq .faq-hero h1 {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.95rem, 5.4vw, 3.35rem);
  line-height: 1.16;
  letter-spacing: 0.01em;
  margin: 12px 0 0;
  color: var(--paper);
  text-wrap: balance;
}

.page-faq .faq-lede {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 40em;
  font-size: clamp(1rem, 1.2vw, 1.08rem);
  line-height: 1.78;
  color: rgba(244, 237, 225, 0.84);
}

.page-faq .faq-hero__meta {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
  font-size: 0.94rem;
  color: var(--steel);
}

.page-faq .faq-hero__meta li {
  padding-left: 16px;
  position: relative;
}

.page-faq .faq-hero__meta li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 1px;
  background: var(--amber);
}

.page-faq .faq-hero__media {
  margin: 0;
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, var(--faq-cut) 100%, 0 calc(100% - var(--faq-cut)));
  border: 1px solid var(--edge);
  background: var(--ink-800);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 等宽强调 ---------- */
.page-faq .faq-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--amber-bright);
  border-bottom: 1px solid var(--edge-amber);
  padding-bottom: 1px;
  letter-spacing: 0.01em;
}

.page-faq .faq-mono--lg {
  font-size: 1.5em;
  line-height: 1;
}

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(28px, 5vw, 60px);
  align-items: start;
}

.page-faq .faq-rail {
  min-width: 0;
  border-top: 1px solid var(--edge);
  padding-top: 16px;
}

.page-faq .faq-rail .toc-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .toc-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 12px 8px 10px;
  border-bottom: 2px solid transparent;
  color: var(--steel);
  text-decoration: none;
  font-size: 0.93rem;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .toc-link:hover,
.page-faq .toc-link:focus-visible {
  color: var(--amber-bright);
  border-bottom-color: var(--edge-amber);
}

.page-faq .toc-link[aria-current="location"] {
  color: var(--amber-bright);
  border-bottom-color: var(--amber);
  background: rgba(200, 145, 47, 0.09);
}

.page-faq .toc-index {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--steel);
}

.page-faq .toc-link[aria-current="location"] .toc-index {
  color: var(--coral);
}

.page-faq .faq-rail__aside {
  margin-top: 18px;
  padding: 14px 16px;
  background: var(--ink-800);
  border-left: 2px solid var(--celadon);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--steel);
}

.page-faq .faq-rail__aside p {
  margin: 0 0 10px;
}

.page-faq .faq-rail__jump {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--amber-bright);
  text-decoration: none;
  border-bottom: 1px solid var(--edge-amber);
}

.page-faq .faq-rail__jump:hover,
.page-faq .faq-rail__jump:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 分类入口 ---------- */
.page-faq .faq-flow {
  min-width: 0;
}

.page-faq .faq-scenes {
  margin-bottom: clamp(38px, 6vw, 72px);
}

.page-faq .faq-section-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  margin: 0;
  color: var(--paper);
}

.page-faq .faq-section-lede {
  margin: 10px 0 clamp(20px, 3vw, 28px);
  font-size: 0.98rem;
  line-height: 1.7;
  color: var(--steel);
}

.page-faq .faq-cat-grid {
  display: grid;
  gap: clamp(12px, 1.8vw, 18px);
  grid-template-columns: 1fr;
}

.page-faq .faq-cat {
  display: block;
  padding: clamp(16px, 2.2vw, 22px);
  background: var(--ink-800);
  border: 1px solid var(--edge);
  border-left: 3px solid var(--amber);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
  color: inherit;
  text-decoration: none;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.page-faq .faq-cat:hover,
.page-faq .faq-cat:focus-visible {
  transform: translateY(-4px);
  box-shadow: var(--lift);
  border-left-color: var(--amber-bright);
}

.page-faq .faq-cat h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.08rem;
  line-height: 1.4;
  margin: 12px 0 8px;
  color: var(--paper);
}

.page-faq .faq-cat p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--steel);
}

/* ---------- 问答组 ---------- */
.page-faq .faq-group {
  padding-top: clamp(26px, 4vw, 42px);
  margin-bottom: clamp(34px, 5vw, 60px);
  border-top: 1px solid var(--edge);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-group__head {
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-faq .faq-group__head h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.32rem, 2.7vw, 1.95rem);
  line-height: 1.3;
  margin: 12px 0 0;
  color: var(--paper);
  text-wrap: balance;
}

.page-faq .faq-group__head p {
  margin: 12px 0 0;
  max-width: 46em;
  font-size: 0.97rem;
  line-height: 1.72;
  color: var(--steel);
}

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

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

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: clamp(15px, 2vw, 20px) 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1rem, 1.5vw, 1.12rem);
  line-height: 1.5;
  color: var(--paper);
  transition: color 0.18s ease;
}

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

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--amber-bright);
}

.page-faq .faq-item__mark {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 4px;
  position: relative;
  border: 1px solid var(--edge-amber);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--amber);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-item__mark::before {
  left: 4px;
  right: 4px;
  top: 9px;
  height: 1px;
}

.page-faq .faq-item__mark::after {
  top: 4px;
  bottom: 4px;
  left: 9px;
  width: 1px;
}

.page-faq .faq-item[open] .faq-item__mark::after {
  opacity: 0;
  transform: scaleY(0.2);
}

.page-faq .faq-item[open] summary {
  color: var(--amber-bright);
}

.page-faq .faq-item__body {
  padding: 0 0 clamp(16px, 2.4vw, 22px);
  max-width: 44em;
}

.page-faq .faq-item__body p {
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.78;
  color: rgba(244, 237, 225, 0.82);
}

.page-faq .faq-item__body a {
  color: var(--amber-bright);
  text-decoration: none;
  border-bottom: 1px solid var(--edge-amber);
}

.page-faq .faq-item__body a:hover,
.page-faq .faq-item__body a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 导出组图文 ---------- */
.page-faq .faq-group__figure {
  margin: 20px 0 0;
  border: 1px solid var(--edge);
  background: var(--ink-800);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-group__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-group--contact {
  border-top-color: var(--edge-amber);
}

.page-faq .faq-contact {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  grid-template-columns: 1fr;
  padding: clamp(20px, 3vw, 32px);
  background: linear-gradient(160deg, var(--ink-800) 0%, var(--ink-700) 100%);
  border-left: 3px solid var(--coral);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

.page-faq .faq-contact__col h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  margin: 0 0 12px;
  color: var(--paper);
}

.page-faq .faq-check {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .faq-check li {
  position: relative;
  padding-left: 20px;
  font-size: 0.94rem;
  line-height: 1.7;
  color: rgba(244, 237, 225, 0.82);
}

.page-faq .faq-check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 10px;
  height: 1px;
  background: var(--celadon);
}

.page-faq .faq-contact__line {
  margin: 16px 0 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-faq .faq-terms-hint {
  margin: 18px 0 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--steel);
}

.page-faq .faq-terms-hint a {
  color: var(--amber-bright);
  text-decoration: none;
  border-bottom: 1px solid var(--edge-amber);
}

.page-faq .faq-terms-hint a:hover,
.page-faq .faq-terms-hint a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-cat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    align-items: end;
  }

  .page-faq .faq-hero__media {
    margin-bottom: 6px;
  }

  .page-faq .faq-group--export .faq-group__body {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(230px, 0.6fr);
    gap: clamp(20px, 3vw, 36px);
    align-items: start;
    border-top: 1px solid var(--edge);
    padding-top: 18px;
  }

  .page-faq .faq-group--export .faq-items {
    border-top: 0;
  }

  .page-faq .faq-group__figure {
    margin-top: 0;
  }
}

@media (min-width: 1060px) {
  .page-faq .faq-cat-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
  }

  .page-faq .faq-rail .toc-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .toc-link {
    padding: 9px 10px;
    border-bottom: 0;
    border-left: 2px solid transparent;
  }

  .page-faq .toc-link:hover,
  .page-faq .toc-link:focus-visible {
    border-left-color: var(--edge-amber);
    border-bottom-color: transparent;
  }

  .page-faq .toc-link[aria-current="location"] {
    border-left-color: var(--amber);
    border-bottom-color: transparent;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat {
    transition: none;
  }

  .page-faq .faq-cat:hover,
  .page-faq .faq-cat:focus-visible {
    transform: none;
  }
}