.page-faq {
  --faq-index-w: 232px;
  --faq-tint: rgba(53, 240, 200, 0.07);
  display: block;
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

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

/* ---------- 面包屑与首屏 ---------- */

.page-faq .breadcrumbs {
  margin: 1.1rem 0 1.6rem;
}

.page-faq .faq-hero {
  border-top: 1px solid var(--edge);
  padding-top: clamp(1.3rem, 4vw, 2.2rem);
}

.page-faq .faq-eyebrow {
  margin: 0 0 0.85rem;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq h1 {
  margin: 0 0 0.9rem;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(2.05rem, 7vw, 3.1rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-lede {
  max-width: 52ch;
  margin: 0 0 clamp(1.5rem, 4vw, 2.2rem);
  font-size: clamp(0.96rem, 1.6vw, 1.05rem);
  line-height: 1.8;
  color: var(--ink-light);
}

.page-faq .faq-hero-media {
  margin: 0 0 clamp(2.2rem, 6vw, 3.4rem);
}

.page-faq .faq-hero-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--edge);
  background: var(--stand);
}

.page-faq .faq-hero-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(53, 240, 200, 0.07) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(53, 240, 200, 0.05) 0 1px, transparent 1px 72px);
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1400 / 520;
  object-fit: cover;
}

.page-faq .faq-hero-media figcaption {
  margin-top: 0.7rem;
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 主体：索引 + 问答组 ---------- */

.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2.4rem;
}

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

.page-faq .faq-index-head {
  margin: 0 0 0.75rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.12rem;
}

.page-faq .faq-index-link {
  display: grid;
  grid-template-columns: 1.9rem minmax(0, 1fr);
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.5rem 0.7rem 0.5rem 0.75rem;
  border-left: 2px solid transparent;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--ink-light);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-index-num {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: var(--faq-tint);
}

.page-faq .faq-index-link:hover .faq-index-num,
.page-faq .faq-index-link:focus-visible .faq-index-num {
  color: var(--cyan);
}

.page-faq .faq-index-foot {
  margin: 1rem 0 0;
  font-size: 0.84rem;
  line-height: 1.65;
  color: var(--muted);
}

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

.page-faq .faq-index-foot a:hover,
.page-faq .faq-index-foot a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-groups {
  display: grid;
  gap: clamp(2.2rem, 6vw, 3.4rem);
  min-width: 0;
}

/* ---------- 组标题 ---------- */

.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: 6rem;
}

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--edge);
}

.page-faq .faq-group-num {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.2rem, 3.4vw, 1.5rem);
  line-height: 1.3;
  letter-spacing: -0.005em;
  color: var(--paper);
}

/* ---------- 组内配图 ---------- */

.page-faq .faq-figure {
  margin: 1.4rem 0 0;
  border: 1px solid var(--edge);
  background: var(--stand);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1000 / 560;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 0.6rem 0.9rem;
  border-top: 1px solid var(--edge);
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-list {
  margin-top: 0.6rem;
}

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

.page-faq .faq-item-h {
  margin: 0;
  font-size: 1rem;
}

.page-faq .faq-q {
  width: 100%;
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr) 1rem;
  align-items: start;
  gap: 0.65rem;
  margin: 0;
  padding: 1.05rem 0.15rem;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink-light);
  cursor: pointer;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-q:hover,
.page-faq .faq-q:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-qnum {
  padding-top: 0.28rem;
  font-family: var(--mono);
  font-weight: 400;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--amber);
}

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

.page-faq .faq-qmark {
  width: 1rem;
  height: 1rem;
  margin-top: 0.32rem;
  color: var(--cyan);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-q[aria-expanded="true"] .faq-qmark {
  transform: rotate(90deg);
}

.page-faq .faq-a {
  border-left: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-a-inner {
  padding: 0 0 1.3rem;
  font-size: 0.94rem;
  line-height: 1.82;
  color: var(--ink-light);
}

.page-faq .faq-a-inner p {
  margin: 0 0 0.75rem;
}

.page-faq .faq-a-inner p:last-of-type {
  margin-bottom: 0.4rem;
}

.page-faq .faq-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.55rem;
}

.page-faq .faq-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.85rem;
  border: 1px solid var(--edge);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.02em;
  color: var(--cyan);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-pill:hover,
.page-faq .faq-pill:focus-visible {
  border-color: var(--cyan);
  background: var(--faq-tint);
}

/* ---------- 结尾 ---------- */

.page-faq .faq-outro {
  margin-top: clamp(2.6rem, 7vw, 4rem);
  padding: clamp(1.4rem, 4vw, 2.3rem);
  background: var(--stand);
  border-top: 2px solid var(--orange);
  display: grid;
  gap: 0.9rem;
}

.page-faq .faq-outro h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.25rem, 3.6vw, 1.6rem);
  line-height: 1.25;
  color: var(--paper);
}

.page-faq .faq-outro p {
  margin: 0;
  max-width: 54ch;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--ink-light);
}

.page-faq .faq-outro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 0.3rem;
}

/* ---------- 断点 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-q {
    grid-template-columns: 2.5rem minmax(0, 1fr) 1.1rem;
    gap: 0.85rem;
    font-size: 1.03rem;
  }

  .page-faq .faq-a-inner {
    padding-left: 3.35rem;
  }

  .page-faq .faq-index-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 0.5rem;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: clamp(2.4rem, 5vw, 3.6rem);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 4.5rem;
    padding-top: 1.1rem;
  }

  .page-faq .faq-index-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-a-inner {
    max-width: 62ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index-link,
  .page-faq .faq-q,
  .page-faq .faq-qmark,
  .page-faq .faq-pill,
  .page-faq .faq-a {
    transition-duration: 1ms;
  }
}