/* ===== 常见问题页 ===== */
.page-faq{
  --faq-rail:240px;
  --faq-stick:calc(var(--bar-h-short) + 24px);
  display:block;
  background:var(--ink);
  color:var(--white);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero{
  position:relative;
  overflow:hidden;
  padding:24px 0 52px;
  background:linear-gradient(167deg, #0B1F1A 0%, #0B1F1A 60%, #10251D 100%);
  border-bottom:1px solid var(--line);
}
.page-faq .faq-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(to right, rgba(62,91,79,.22) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(62,91,79,.22) 1px, transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
}
.page-faq .faq-hero::after{
  content:"";
  position:absolute;
  top:-70px;
  right:-90px;
  width:230px;
  height:230px;
  border:1px solid var(--red);
  opacity:.22;
  transform:rotate(45deg);
  pointer-events:none;
}
.page-faq .faq-hero .shell{
  position:relative;
  z-index:1;
}

.page-faq .faq-hero__title{
  margin:12px 0 0;
  font-size:clamp(29px, 6.4vw, 54px);
  line-height:1.1;
  letter-spacing:-.02em;
  font-weight:800;
  color:var(--white);
}
.page-faq .faq-hero__title span{
  display:block;
  color:var(--yellow);
}
.page-faq .faq-hero__lede{
  margin:18px 0 0;
  max-width:58ch;
  font-size:15px;
  line-height:1.8;
  color:var(--gray);
}

/* 搜索式引导条 */
.page-faq .faq-jump{
  display:grid;
  grid-template-columns:minmax(0, 1fr);
  gap:12px;
  margin-top:30px;
  padding:14px;
  border:1px solid var(--line);
  background:rgba(20,23,26,.72);
  color:var(--white);
  text-decoration:none;
  align-items:center;
}
.page-faq .faq-jump__label{
  font-family:var(--mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--yellow);
}
.page-faq .faq-jump__field{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:10px 12px;
  border:1px solid var(--line);
  background:var(--ink);
  font-family:var(--mono);
  font-size:13px;
  color:var(--gray-dim);
}
.page-faq .faq-jump__caret{
  flex:none;
  width:0;
  height:0;
  border-left:5px solid transparent;
  border-right:5px solid transparent;
  border-top:6px solid var(--yellow);
}
.page-faq .faq-jump__go{
  justify-self:start;
  padding:9px 16px;
  background:var(--yellow);
  color:var(--char);
  font-size:13.5px;
  font-weight:700;
  white-space:nowrap;
  transition:background-color .18s ease;
}
.page-faq .faq-jump:hover .faq-jump__go,
.page-faq .faq-jump:focus-visible .faq-jump__go{
  background:var(--white);
}
.page-faq .faq-jump:focus-visible{
  outline:2px solid var(--yellow);
  outline-offset:3px;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body{
  padding:42px 0 72px;
}
.page-faq .faq-cols{
  display:grid;
  grid-template-columns:minmax(0, 1fr);
  gap:30px;
}

/* 分组索引 */
.page-faq .faq-index{
  border-top:2px solid var(--yellow);
  padding-top:14px;
}
.page-faq .faq-index__title{
  margin:0;
  font-size:12px;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--gray);
}
.page-faq .faq-index__list{
  list-style:none;
  margin:14px 0 0;
  padding:0;
  display:grid;
  gap:2px;
}
.page-faq .faq-index__item{
  margin:0;
}
.page-faq .faq-index__link{
  display:grid;
  grid-template-columns:34px minmax(0, 1fr) auto;
  align-items:center;
  gap:10px;
  padding:9px 10px;
  border-left:2px solid transparent;
  color:var(--gray);
  text-decoration:none;
  font-size:14px;
  line-height:1.5;
  transition:color .16s ease, border-color .16s ease, background-color .16s ease;
}
.page-faq .faq-index__num{
  font-family:var(--mono);
  font-size:12px;
  font-weight:600;
  color:var(--gray-dim);
}
.page-faq .faq-index__count{
  font-family:var(--mono);
  font-size:12px;
  color:var(--gray-dim);
}
.page-faq .faq-index__link:hover,
.page-faq .faq-index__link[aria-current="true"]{
  color:var(--white);
  border-left-color:var(--yellow);
  background:rgba(242,194,48,.07);
}
.page-faq .faq-index__link:hover .faq-index__num,
.page-faq .faq-index__link[aria-current="true"] .faq-index__num{
  color:var(--yellow);
}
.page-faq .faq-index__link:focus-visible{
  outline:2px solid var(--yellow);
  outline-offset:2px;
}
.page-faq .faq-index__media{
  margin:20px 0 0;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group{
  scroll-margin-top:var(--faq-stick);
}
.page-faq .faq-group + .faq-group{
  margin-top:40px;
}
.page-faq .faq-group__head{
  display:grid;
  grid-template-columns:34px minmax(0, 1fr);
  align-items:baseline;
  gap:6px 12px;
  padding-bottom:14px;
  border-bottom:2px solid var(--yellow);
}
.page-faq .faq-group__num{
  font-family:var(--mono);
  font-size:13px;
  font-weight:600;
  color:var(--yellow);
}
.page-faq .faq-group__title{
  margin:0;
  font-size:clamp(19px, 3.2vw, 26px);
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.25;
  color:var(--white);
}
.page-faq .faq-group__note{
  grid-column:2;
  margin:0;
  font-size:13.5px;
  line-height:1.6;
  color:var(--gray);
}
.page-faq .faq-group__media{
  margin:26px 0 0;
}

.page-faq .faq-list{
  margin-top:4px;
}

/* 折叠问答 */
.page-faq .qa{
  border-bottom:1px solid var(--line);
}
.page-faq .qa__q{
  position:relative;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:18px;
  padding:16px 4px 16px 14px;
  cursor:pointer;
  list-style:none;
  font-size:15.5px;
  font-weight:700;
  line-height:1.5;
  color:var(--white);
  transition:color .16s ease;
}
.page-faq .qa__q::-webkit-details-marker{
  display:none;
}
.page-faq .qa__q::before{
  content:"";
  position:absolute;
  left:0;
  top:12px;
  bottom:12px;
  width:3px;
  background:var(--yellow);
  opacity:0;
  transition:opacity .16s ease;
}
.page-faq .qa__q::after{
  content:"";
  flex:none;
  width:10px;
  height:10px;
  margin-top:6px;
  background:var(--gray);
  clip-path:polygon(0 0, 100% 0, 50% 100%);
  transition:transform .2s ease, background-color .2s ease;
}
.page-faq .qa__q:hover::before,
.page-faq .qa__q:focus-visible::before,
.page-faq .qa[open] .qa__q::before{
  opacity:1;
}
.page-faq .qa__q:focus-visible{
  outline:2px solid var(--yellow);
  outline-offset:-2px;
}
.page-faq .qa[open] .qa__q::after{
  transform:rotate(180deg);
  background:var(--yellow);
}
.page-faq .qa__a{
  margin:0 0 18px 14px;
  padding:2px 0 2px 16px;
  border-left:2px solid var(--cyan);
  max-width:68ch;
}
.page-faq .qa__a p{
  margin:0 0 10px;
  font-size:14.5px;
  line-height:1.78;
  color:var(--gray);
}
.page-faq .qa__a p:last-child{
  margin-bottom:0;
}
.page-faq .qa__a a{
  color:var(--cyan);
  text-decoration:underline;
  text-underline-offset:3px;
}
.page-faq .qa__a a:hover{
  color:var(--white);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-more{
  margin-top:52px;
  padding:22px;
  border:1px solid var(--line);
  border-left:4px solid var(--yellow);
  background:var(--char);
  display:grid;
  gap:14px;
}
.page-faq .faq-more__text{
  margin:0;
  font-size:14.5px;
  line-height:1.7;
  color:var(--gray);
}
.page-faq .faq-more__actions{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}

/* ---------- 响应式 ---------- */
@media (min-width:720px){
  .page-faq .faq-hero{
    padding:28px 0 62px;
  }
  .page-faq .faq-jump{
    grid-template-columns:auto minmax(0, 1fr) auto;
    gap:18px;
    padding:12px 14px;
  }
  .page-faq .faq-jump__go{
    justify-self:end;
  }
  .page-faq .faq-more{
    grid-template-columns:minmax(0, 1fr) auto;
    align-items:center;
    gap:24px;
    padding:24px 26px;
  }
}

@media (min-width:900px){
  .page-faq .faq-cols{
    grid-template-columns:var(--faq-rail) minmax(0, 1fr);
    gap:44px;
    align-items:start;
  }
  .page-faq .faq-index{
    position:sticky;
    top:var(--faq-stick);
    max-height:calc(100vh - var(--faq-stick) - 24px);
    overflow-y:auto;
  }
  .page-faq .faq-group + .faq-group{
    margin-top:52px;
  }
  .page-faq .qa__q{
    font-size:16px;
    padding:18px 6px 18px 16px;
  }
  .page-faq .qa__a{
    margin:0 0 20px 16px;
  }
}

@media (min-width:1200px){
  .page-faq .faq-cols{
    grid-template-columns:260px minmax(0, 1fr);
    gap:56px;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-faq .qa__q::before,
  .page-faq .qa__q::after,
  .page-faq .faq-jump__go,
  .page-faq .faq-index__link{
    transition:none;
  }
}