.page-faq {
  --fold-bg: #FCFAF7;
  --tint-a: #EDE7F4;
  --tint-b: #E3DAF0;
  --tint-c: #D9CDE9;
  --tint-d: #CEC0E2;
  --tint-e: #E9E4EF;
  color: var(--ink);
  padding-bottom: 64px;
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: 26px;
  padding: 26px 0 34px;
}

.page-faq .faq-kicker {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--grape-mid);
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(30px, 6.4vw, 56px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--grape);
}

.page-faq .faq-lede {
  margin: 0 0 14px;
  font-size: 17px;
  line-height: 1.85;
  max-width: 40em;
}

.page-faq .faq-lede-sub {
  margin: 0;
  max-width: 40em;
  padding-left: 14px;
  border-left: 2px solid var(--amber);
  font-size: 15px;
  line-height: 1.8;
  color: #55505c;
}

.page-faq .faq-hero-figure {
  margin: 0;
}

.page-faq .faq-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--frost);
  background: var(--mist);
}

/* 骨架 */
.page-faq .faq-shell {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--frost);
}

/* 分类刻度 */
.page-faq .faq-toc {
  padding: 22px 0 6px;
}

.page-faq .faq-toc-title {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--grape-mid);
}

.page-faq .faq-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
}

.page-faq .faq-toc-list a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 0;
  font-size: 14px;
  color: var(--grape);
  text-decoration: none;
  transition: color 0.16s var(--ease);
}

.page-faq .faq-toc-list .toc-idx {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .faq-toc-list a:hover {
  color: var(--grape-mid);
}

.page-faq .faq-toc-list a:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

/* 问答分组 */
.page-faq .faq-group {
  padding: 30px 0 20px;
  border-top: 1px solid var(--frost);
}

.page-faq .faq-head {
  margin-bottom: 18px;
}

.page-faq .faq-head .idx {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 2px;
  background: var(--tint, var(--mist));
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--grape);
}

.page-faq .faq-head h2 {
  margin: 8px 0 8px;
  font-family: var(--serif);
  font-size: clamp(21px, 3.6vw, 28px);
  line-height: 1.3;
  color: var(--grape);
}

.page-faq .faq-head .sub {
  margin: 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.8;
  color: #55505c;
}

.page-faq .faq-group--a { --tint: var(--tint-a); }
.page-faq .faq-group--b { --tint: var(--tint-b); }
.page-faq .faq-group--c { --tint: var(--tint-c); }
.page-faq .faq-group--d { --tint: var(--tint-d); }
.page-faq .faq-group--e { --tint: var(--tint-e); }

/* 折页 */
.page-faq .fold {
  margin: 0 0 10px;
  border: 1px solid var(--frost);
  border-radius: 2px;
  background: var(--fold-bg);
  transition: border-color 0.16s var(--ease), background-color 0.16s var(--ease);
}

.page-faq .fold:hover {
  border-color: var(--amber);
}

.page-faq .fold[open] {
  background: #FFFFFF;
}

.page-faq .fold summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px;
  list-style: none;
  cursor: pointer;
}

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

.page-faq .fold summary:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -2px;
}

.page-faq .fold-code {
  flex: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--grape-mid);
}

.page-faq .fold-text {
  flex: 1 1 auto;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}

.page-faq .fold-sign {
  position: relative;
  flex: none;
  align-self: center;
  width: 14px;
  height: 14px;
}

.page-faq .fold-sign::before,
.page-faq .fold-sign::after {
  content: "";
  position: absolute;
  background: var(--grape-mid);
  transition: transform 0.16s var(--ease), background-color 0.16s var(--ease);
}

.page-faq .fold-sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .fold-sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .fold[open] .fold-sign::after {
  transform: scaleY(0);
}

.page-faq .fold summary:hover .fold-sign::before,
.page-faq .fold summary:hover .fold-sign::after {
  background: var(--amber);
}

.page-faq .fold-a {
  padding: 14px 18px 16px 16px;
  border-top: 1px dashed var(--frost);
}

.page-faq .fold-a p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
}

.page-faq .fold-a a {
  color: var(--grape-mid);
  text-decoration: underline;
  text-decoration-color: var(--frost);
  text-underline-offset: 3px;
}

.page-faq .fold-a a:hover {
  color: var(--grape);
  text-decoration-color: var(--amber);
}

/* 组内补充说明 */
.page-faq .faq-more {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--mist);
  font-size: 15px;
  line-height: 1.8;
  color: #55505c;
}

.page-faq .faq-more a {
  color: var(--grape-mid);
  text-decoration: underline;
  text-decoration-color: var(--frost);
  text-underline-offset: 3px;
}

.page-faq .faq-more a:hover {
  color: var(--grape);
  text-decoration-color: var(--amber);
}

/* 组内配图 */
.page-faq .faq-photo {
  margin: 22px 0 4px;
}

.page-faq .faq-photo img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--frost);
  background: var(--vine);
}

.page-faq .faq-photo .frame-caption a {
  color: var(--grape-mid);
  text-decoration: underline;
  text-decoration-color: var(--frost);
  text-underline-offset: 3px;
}

/* 底部通道 */
.page-faq .faq-cta {
  margin-top: 44px;
  padding: 30px 22px;
  border-radius: 2px;
  background:
    radial-gradient(120% 140% at 88% 8%, rgba(209, 154, 60, 0.28) 0%, rgba(209, 154, 60, 0) 58%),
    linear-gradient(140deg, var(--vine) 0%, #10352B 58%, var(--grape) 100%);
}

.page-faq .faq-cta h2 {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: clamp(22px, 4vw, 32px);
  line-height: 1.28;
  color: var(--paper);
}

.page-faq .faq-cta p {
  margin: 0 0 20px;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(245, 242, 236, 0.86);
}

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

.page-faq .faq-cta .btn--ghost {
  color: var(--paper);
  border-color: rgba(245, 242, 236, 0.45);
}

.page-faq .faq-cta .btn--ghost:hover {
  border-color: var(--amber);
  color: var(--amber);
}

/* 桌面布局 */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1fr) 380px;
    align-items: end;
    gap: 48px;
    padding: 36px 0 40px;
  }

  .page-faq .faq-shell {
    grid-template-columns: 200px minmax(0, 1fr);
    column-gap: 48px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 96px;
    align-self: start;
    padding: 34px 0 0;
  }

  .page-faq .faq-toc-list {
    display: block;
    border-left: 1px solid var(--frost);
  }

  .page-faq .faq-toc-list li {
    position: relative;
  }

  .page-faq .faq-toc-list a {
    display: flex;
    padding: 11px 0 11px 20px;
  }

  .page-faq .faq-toc-list a::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 10px;
    height: 1px;
    background: var(--frost);
    transition: width 0.16s var(--ease), background-color 0.16s var(--ease);
  }

  .page-faq .faq-toc-list a:hover::before,
  .page-faq .faq-toc-list a:focus-visible::before {
    width: 17px;
    background: var(--amber);
  }

  .page-faq .faq-group {
    padding: 34px 0 26px;
  }

  .page-faq .fold-a {
    padding: 14px 22px 18px 50px;
  }

  .page-faq .fold-text {
    font-size: 18px;
  }

  .page-faq .faq-photo {
    max-width: 660px;
  }

  .page-faq .faq-cta {
    padding: 40px 34px;
  }
}

@media (max-width: 560px) {
  .page-faq .fold summary {
    gap: 10px;
    padding: 13px 13px;
  }

  .page-faq .fold-text {
    font-size: 16px;
  }

  .page-faq .fold-a {
    padding: 13px 13px 15px 13px;
  }

  .page-faq .faq-cta {
    padding: 24px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .fold,
  .page-faq .fold-sign::before,
  .page-faq .fold-sign::after,
  .page-faq .faq-toc-list a,
  .page-faq .faq-toc-list a::before {
    transition: none;
  }
}