.page-faq {
  --faq-ink: #16233A;
  --faq-hair: rgba(242, 228, 194, .14);
  --faq-paper-line: rgba(22, 35, 58, .18);
  --faq-top: calc(var(--bar-h) + 24px);
  display: block;
  padding: 24px 0 88px;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  margin-bottom: 6px;
}

/* ---------- 首屏主题声明 ---------- */
.page-faq .faq-mast {
  padding: 28px 0 30px;
  border-bottom: 1px solid var(--faq-hair);
  margin-bottom: 34px;
}

.page-faq .faq-mast__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 16px;
  margin-bottom: 18px;
}

.page-faq .faq-mast h1 {
  font-family: var(--font-title);
  font-size: clamp(28px, 7vw, 56px);
  line-height: 1.08;
  letter-spacing: .02em;
  font-weight: 600;
  color: var(--paper);
  margin: 0 0 18px;
  max-width: 22ch;
}

.page-faq .faq-mast__lede {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 三栏骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

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

/* ---------- 左侧分组索引 ---------- */
.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 7px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: var(--ink-2);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--cy-light);
  border-color: var(--cy);
}

.page-faq .faq-rail__list a:focus-visible {
  outline: 2px solid var(--cy-light);
  outline-offset: 2px;
}

.page-faq .faq-rail__num {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--amber);
}

/* ---------- 手风琴分组 ---------- */
.page-faq .faq-group {
  position: relative;
  border-top: 1px solid var(--faq-hair);
  padding-top: 24px;
  margin-bottom: 52px;
  scroll-margin-top: var(--faq-top);
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
}

.page-faq .faq-group__idx {
  margin: 0;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--amber);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-title);
  font-size: clamp(24px, 4.4vw, 32px);
  line-height: 1.15;
  letter-spacing: .02em;
  font-weight: 600;
  color: var(--paper);
}

.page-faq .faq-group__lede {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .faq-group__next {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
}

/* ---------- 图文块 ---------- */
.page-faq .faq-figure {
  margin: 0 0 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-2);
}

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

.page-faq .faq-figure figcaption {
  padding: 11px 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 问题条目 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-hair);
  scroll-margin-top: var(--faq-top);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 17px 2px;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  transition: color .2s var(--ease);
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item > summary:hover {
  color: var(--cy-light);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cy-light);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.page-faq .faq-item__idx {
  flex: none;
  min-width: 34px;
  padding-top: 3px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--amber);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.52;
  letter-spacing: 0;
}

.page-faq .faq-item > summary::after {
  content: "+";
  flex: none;
  width: 16px;
  text-align: center;
  font-family: var(--font-num);
  font-size: 18px;
  line-height: 1;
  color: var(--cy);
  transition: color .22s var(--ease);
}

.page-faq .faq-item[open] > summary::after {
  content: "−";
  color: var(--cy-light);
}

/* ---------- 答案纸面 ---------- */
.page-faq .faq-item__a {
  margin: 0 0 16px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--cy-deep);
  background: var(--paper-2);
  color: var(--faq-ink);
  font-size: 15px;
  line-height: 1.78;
  box-shadow: var(--shadow);
}

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

.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-k {
  font-family: var(--font-num);
  font-weight: 700;
  font-style: normal;
  color: var(--cy-deep);
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faqUnfold .28s var(--ease) both;
}

@keyframes faqUnfold {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 右侧热门问题 ---------- */
.page-faq .faq-hot {
  border-top: 1px solid var(--faq-hair);
  padding-top: 18px;
}

.page-faq .faq-hot__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-hot ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-hot a {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  flex: 1 1 220px;
  padding: 11px 13px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--ink-2);
  color: var(--paper);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-hot a:hover,
.page-faq .faq-hot a:focus-visible {
  border-color: var(--cy);
  color: var(--cy-light);
}

.page-faq .faq-hot a:focus-visible {
  outline: 2px solid var(--cy-light);
  outline-offset: 2px;
}

.page-faq .faq-hot__dot {
  flex: none;
  width: 7px;
  height: 7px;
  margin-top: 6px;
  border-radius: 50%;
  background: var(--cy);
}

/* ---------- 平板 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-shell {
    grid-template-columns: 186px minmax(0, 1fr);
    gap: 44px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: var(--faq-top);
    align-self: start;
  }

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

  .page-faq .faq-rail__list li + li {
    margin-top: 4px;
  }

  .page-faq .faq-rail__list a {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    background: transparent;
    padding: 9px 10px;
  }

  .page-faq .faq-rail__list a:hover,
  .page-faq .faq-rail__list a:focus-visible {
    border-left-color: var(--cy);
    background: var(--ink-2);
  }

  .page-faq .faq-hot {
    grid-column: 1 / -1;
    border-top: 1px solid var(--faq-hair);
  }

  .page-faq .faq-group__lede,
  .page-faq .faq-item > summary,
  .page-faq .faq-item__a,
  .page-faq .faq-group__next {
    margin-left: 0;
  }

  .page-faq .faq-item__a {
    margin-left: 48px;
  }
}

/* ---------- 桌面三栏 ---------- */
@media (min-width: 1200px) {
  .page-faq .faq-shell {
    grid-template-columns: 186px minmax(0, 1fr) 206px;
    gap: 48px;
  }

  .page-faq .faq-hot {
    grid-column: auto;
    position: sticky;
    top: var(--faq-top);
    align-self: start;
  }

  .page-faq .faq-hot ul {
    display: block;
  }

  .page-faq .faq-hot a {
    flex: none;
  }

  .page-faq .faq-hot li + li {
    margin-top: 10px;
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }

  .page-faq .faq-item > summary,
  .page-faq .faq-rail__list a,
  .page-faq .faq-hot a {
    transition: none;
  }
}