.page-faq {
  --faq-answer-bg: #F0E9DA;
  --faq-gap: clamp(44px, 7vw, 96px);
  --faq-answer-inset: clamp(8px, 1.6vw, 18px);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding-block: clamp(16px, 2.4vw, 26px) 0;
  font-size: var(--step-meta);
  letter-spacing: .04em;
  color: var(--gray-brown);
}
.page-faq .breadcrumb a {
  color: var(--celadon);
  text-decoration: none;
}
.page-faq .breadcrumb a:hover { color: var(--amber); }
.page-faq .breadcrumb__item + .breadcrumb__item { margin-left: 6px; }

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(28px, 5vw, 56px) clamp(36px, 6vw, 72px);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -12%;
  right: calc(var(--page-x) * -0.15);
  width: clamp(160px, 26vw, 320px);
  aspect-ratio: 1 / 1;
  background: var(--indigo);
  opacity: .05;
  border-radius: var(--radius);
  transform: rotate(-8deg);
  pointer-events: none;
}
.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  grid-template-columns: minmax(0, 1fr);
  align-items: end;
}
.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
  font-size: var(--step-meta);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--amber);
}
.page-faq .faq-hero__title {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 5.2vw, 3.6rem);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--indigo);
  max-width: 16em;
}
.page-faq .faq-hero__lede {
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  font-family: var(--font-body);
  font-size: var(--step-body);
  line-height: 1.85;
  color: var(--gray-brown);
  max-width: 34em;
}
.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-faq .faq-hero__figure {
  margin: 0;
}
.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--rule);
}
.page-faq .faq-hero__caption {
  margin-top: 10px;
  font-size: var(--step-meta);
  letter-spacing: .04em;
  color: var(--gray-brown);
}

/* ---------- 工具条 ---------- */
.page-faq .faq-tools {
  display: grid;
  gap: 18px;
  padding-block: 18px 20px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.page-faq .faq-tools__axis {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}
.page-faq .faq-tools__axis .index-axis__node {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: var(--step-meta);
  font-weight: 500;
  color: var(--indigo);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur-mid) var(--ease), border-color var(--dur-mid) var(--ease), background var(--dur-mid) var(--ease);
}
.page-faq .faq-tools__axis .index-axis__node .mono {
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--amber);
}
.page-faq .faq-tools__axis .index-axis__node:hover,
.page-faq .faq-tools__axis .index-axis__node:focus-visible {
  border-color: var(--amber);
  background: var(--amber-light);
}
.page-faq .faq-tools__filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
}
.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-faq .filter-chip {
  padding: 6px 14px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: transparent;
  font-family: var(--font-display);
  font-size: var(--step-meta);
  letter-spacing: .04em;
  color: var(--gray-brown);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.page-faq .filter-chip:hover { border-color: var(--amber); color: var(--indigo); }
.page-faq .filter-chip[aria-pressed="true"] {
  background: var(--amber-light);
  border-color: var(--amber);
  color: var(--ink-deep);
}
.page-faq .filter-status {
  margin: 0;
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--gray-brown);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-top: var(--faq-gap);
  scroll-margin-top: 96px;
}
.page-faq .faq-group .section__lead {
  max-width: 26em;
}
.page-faq .faq-list {
  margin-top: clamp(20px, 3vw, 34px);
  border-top: 1px solid var(--rule);
}

/* ---------- 问答折叠 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--rule);
  transition: background var(--dur-fast) var(--ease);
}
.page-faq .qa[open] {
  background: var(--faq-answer-bg);
}
.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 14px;
  list-style: none;
  cursor: pointer;
  padding: clamp(16px, 2.4vw, 24px) var(--faq-answer-inset);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.6;
  color: var(--indigo);
  transition: color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.page-faq .qa__q::-webkit-details-marker { display: none; }
.page-faq .qa__q::marker { content: ""; }
.page-faq .qa__q:hover { color: var(--celadon); }
.page-faq .qa[open] .qa__q {
  box-shadow: inset 3px 0 0 var(--amber);
  color: var(--ink-deep);
}
.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 1.1rem;
  line-height: 1;
  color: var(--celadon);
}
.page-faq .qa[open] .qa__q::after {
  content: "–";
  color: var(--amber);
}
.page-faq .qa__num {
  flex: none;
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--amber);
  padding-top: .25em;
}
.page-faq .qa__a {
  padding: 0 var(--faq-answer-inset) clamp(20px, 3vw, 28px) clamp(34px, 4.6vw, 58px);
}
.page-faq .qa__a p {
  margin: 0;
  max-width: 34em;
  font-family: var(--font-body);
  font-size: var(--step-body);
  line-height: 1.85;
  color: var(--ink-deep);
}
.page-faq .qa__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 14px;
}
.page-faq .qa__copy {
  font-size: .75rem;
  letter-spacing: .04em;
  padding: 4px 12px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: transparent;
  color: var(--gray-brown);
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.page-faq .qa__copy:hover { border-color: var(--amber); color: var(--indigo); }
.page-faq .qa__link {
  font-family: var(--font-display);
  font-size: var(--step-meta);
  letter-spacing: .04em;
  color: var(--celadon);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.page-faq .qa__link:hover {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--rule);
}
.page-faq .faq-figure__caption {
  margin-top: 10px;
  font-size: var(--step-meta);
  letter-spacing: .04em;
  color: var(--gray-brown);
}

/* ---------- 收束 CTA ---------- */
.page-faq .faq-cta {
  margin-top: clamp(28px, 4vw, 46px);
  padding: clamp(20px, 3vw, 30px);
  border-left: 3px solid var(--coral);
  background: rgba(217, 88, 74, .06);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 24px;
}
.page-faq .faq-cta__text {
  margin: 0;
  max-width: 36em;
  font-family: var(--font-body);
  font-size: var(--step-body);
  line-height: 1.85;
  color: var(--indigo);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
  .page-faq .qa__q {
    gap: 20px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-tools {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: center;
    gap: 32px;
  }
  .page-faq .faq-tools__axis {
    flex-wrap: wrap;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-tools__filter {
    justify-content: flex-end;
  }
  .page-faq .faq-hero::before {
    width: clamp(240px, 22vw, 360px);
  }
}

@media (max-width: 480px) {
  .page-faq .faq-hero__tags .tag { font-size: .75rem; }
  .page-faq .qa__actions { gap: 8px 14px; }
  .page-faq .faq-cta { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__q,
  .page-faq .filter-chip,
  .page-faq .faq-tools__axis .index-axis__node,
  .page-faq .qa__link,
  .page-faq .qa__copy {
    transition: none;
  }
}