.page-faq{
  --faq-index-w:260px;
  --faq-gutter:56px;
  display:block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero{
  padding-block:30px 6px;
}
.page-faq .faq-hero__grid{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:34px;
  align-items:center;
}
.page-faq .faq-hero h1{
  margin:14px 0 18px;
  max-width:15em;
  font-size:clamp(2rem,5.4vw,3.3rem);
  font-weight:800;
  line-height:1.1;
  letter-spacing:-0.02em;
  color:var(--fg);
}
.page-faq .faq-hero__lede{
  max-width:38em;
  margin:0 0 26px;
  font-size:var(--fs-17);
  line-height:1.8;
  color:var(--fg-dim);
}
.page-faq .faq-jump{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.page-faq .faq-jump a{
  display:inline-flex;
  align-items:center;
  padding:9px 16px;
  font-size:var(--fs-14);
  font-weight:600;
  color:var(--fg);
  text-decoration:none;
  background:var(--bg-raise);
  border-left:2px solid var(--accent);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
  transition:color .18s var(--ease), background .18s var(--ease);
}
.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible{
  color:var(--paper);
  background:var(--bg-steel);
}
.page-faq .faq-hero__media{
  margin:0;
  aspect-ratio:4 / 3;
  overflow:hidden;
  background:var(--bg-steel);
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
}
.page-faq .faq-hero__media img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}

@media (min-width:900px){
  .page-faq .faq-hero{
    padding-block:48px 12px;
  }
  .page-faq .faq-hero__grid{
    grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);
    gap:var(--faq-gutter);
  }
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body{
  padding-block:48px 64px;
}
.page-faq .faq-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:30px;
}

@media (min-width:1000px){
  .page-faq .faq-layout{
    grid-template-columns:var(--faq-index-w) minmax(0,1fr);
    gap:var(--faq-gutter);
    align-items:start;
  }
}

/* ---------- 问题目录 ---------- */
.page-faq .faq-index{
  padding-top:16px;
  border-top:1px solid var(--hair);
}
.page-faq .faq-index__list{
  margin:12px 0 0;
  padding:0;
  list-style:none;
}
.page-faq .faq-index__list li + li{
  border-top:1px solid var(--hair);
}
.page-faq .faq-index__link{
  display:flex;
  gap:12px;
  align-items:baseline;
  padding:11px 4px;
  font-size:var(--fs-14);
  line-height:1.5;
  color:var(--fg-dim);
  text-decoration:none;
  transition:color .18s var(--ease), padding-left .18s var(--ease);
}
.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible{
  color:var(--fg);
  padding-left:10px;
}
.page-faq .faq-index__num{
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:var(--fs-12);
  font-variant-numeric:tabular-nums;
  color:var(--accent);
}

@media (min-width:1000px){
  .page-faq .faq-index{
    position:sticky;
    top:calc(var(--hdr-h) + 28px);
    max-height:calc(100vh - var(--hdr-h) - 56px);
    overflow-y:auto;
  }
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-main{
  min-width:0;
}
.page-faq .faq-group{
  scroll-margin-top:calc(var(--hdr-h) + 24px);
}
.page-faq .faq-group + .faq-group{
  margin-top:58px;
  padding-top:44px;
  background-image:linear-gradient(90deg,var(--hair) 0%,transparent 78%);
  background-repeat:no-repeat;
  background-position:0 0;
  background-size:100% 1px;
}
.page-faq .faq-group__head{
  display:flex;
  align-items:flex-start;
  gap:16px;
  margin-bottom:22px;
}
.page-faq .faq-group__num{
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:clamp(1.35rem,2.6vw,1.95rem);
  font-weight:700;
  line-height:1.05;
  font-variant-numeric:tabular-nums;
  color:var(--accent);
}
.page-faq .faq-group__head h2{
  margin:0;
  font-size:clamp(1.25rem,2.4vw,1.62rem);
  font-weight:800;
  line-height:1.28;
  letter-spacing:-0.01em;
  color:var(--fg);
}

/* ---------- 可展开问答 ---------- */
.page-faq .faq-item{
  margin-bottom:10px;
  background:var(--bg-raise);
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
}
.page-faq .faq-item:last-of-type{
  margin-bottom:0;
}
.page-faq .faq-item__q{
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:18px 22px;
  font-size:var(--fs-17);
  font-weight:700;
  line-height:1.55;
  color:var(--fg);
  cursor:pointer;
  list-style:none;
  transition:color .18s var(--ease);
}
.page-faq .faq-item__q::-webkit-details-marker{
  display:none;
}
.page-faq .faq-item__q::marker{
  content:"";
}
.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible{
  color:var(--accent);
}
.page-faq .faq-item__q:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:-2px;
}
.page-faq .faq-item[open] > .faq-item__q{
  color:var(--accent);
}
.page-faq .faq-item__mark{
  position:relative;
  flex:0 0 16px;
  width:16px;
  height:16px;
  margin-top:5px;
}
.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after{
  content:"";
  position:absolute;
  top:50%;
  left:50%;
  width:12px;
  height:1.5px;
  background:currentColor;
  transform:translate(-50%,-50%);
  transition:transform .22s var(--ease), opacity .22s var(--ease);
}
.page-faq .faq-item__mark::after{
  transform:translate(-50%,-50%) rotate(90deg);
}
.page-faq .faq-item[open] .faq-item__mark::after{
  transform:translate(-50%,-50%) rotate(0deg);
  opacity:0;
}
.page-faq .faq-item__a{
  max-width:40em;
  padding:0 22px 20px 52px;
  font-size:var(--fs-17);
  line-height:1.8;
  color:var(--fg-dim);
}
.page-faq .faq-item__a p{
  margin:0;
}
.page-faq .faq-item__a p + p{
  margin-top:12px;
}
.page-faq .faq-item__a a{
  color:var(--accent);
  text-decoration:none;
  border-bottom:1px solid rgba(255,106,31,.42);
}
.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible{
  border-bottom-color:var(--accent);
}

@keyframes faq-panel-in{
  from{ opacity:0; transform:translateY(-6px); }
  to{ opacity:1; transform:translateY(0); }
}
.page-faq .faq-item[open] > .faq-item__a{
  animation:faq-panel-in .24s var(--ease) both;
}

/* ---------- 手机示意 ---------- */
.page-faq .faq-shot{
  margin:0 0 20px;
  max-width:300px;
  aspect-ratio:5 / 6;
  overflow:hidden;
  background:var(--bg-steel);
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
}
.page-faq .faq-shot img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}

/* ---------- 结束区 ---------- */
.page-faq .faq-outro{
  padding-block:12px 72px;
}
.page-faq .faq-outro__panel{
  padding:32px 26px 34px;
  background:var(--bg-steel);
  border-left:3px solid var(--accent);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 26px),calc(100% - 26px) 100%,0 100%);
}
.page-faq .faq-outro__panel h2{
  margin:10px 0 12px;
  font-size:clamp(1.35rem,2.6vw,1.85rem);
  font-weight:800;
  line-height:1.25;
  letter-spacing:-0.01em;
  color:var(--fg);
}
.page-faq .faq-outro__text{
  max-width:40em;
  margin:0 0 24px;
  font-size:var(--fs-17);
  line-height:1.8;
  color:var(--fg-dim);
}

@media (min-width:760px){
  .page-faq .faq-outro__panel{
    padding:42px 44px 46px;
  }
}

/* ---------- 窄屏收敛 ---------- */
@media (max-width:640px){
  .page-faq .faq-hero h1{
    font-size:clamp(1.75rem,7.5vw,2.3rem);
  }
  .page-faq .faq-item__q{
    padding:16px 16px;
    font-size:var(--fs-17);
  }
  .page-faq .faq-item__a{
    padding:0 16px 18px 46px;
  }
  .page-faq .faq-shot{
    max-width:100%;
  }
  .page-faq .faq-group + .faq-group{
    margin-top:44px;
    padding-top:34px;
  }
}

@media (prefers-reduced-motion:reduce){
  .page-faq .faq-item[open] > .faq-item__a{
    animation:none;
  }
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-item__q,
  .page-faq .faq-index__link,
  .page-faq .faq-jump a{
    transition:none;
  }
}
</main>