.page-faq{
  --faq-muted:rgba(232,236,245,.76);
  --faq-line:rgba(232,236,245,.14);
  position:relative;
  padding-bottom:72px;
  color:var(--paper);
  background:
    radial-gradient(900px 460px at 88% -6%, rgba(41,224,208,.10), transparent 64%),
    radial-gradient(700px 400px at 4% 10%, rgba(255,107,26,.07), transparent 68%),
    var(--night);
}

.page-faq a{color:var(--cyan);text-decoration:none;}
.page-faq a:hover{color:var(--orange-light);}
.page-faq .mono{font-family:var(--font-mono);}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero{
  position:relative;
  padding:26px 0 6px;
  overflow:hidden;
}
.page-faq .faq-hero::after{
  content:"";
  position:absolute;
  top:-80px;
  right:-16%;
  width:58%;
  height:250px;
  background:linear-gradient(90deg,rgba(41,224,208,.13),rgba(255,107,26,.09) 72%,transparent);
  transform:rotate(-6deg);
  pointer-events:none;
  z-index:0;
}
.page-faq .faq-hero__grid{
  position:relative;
  z-index:1;
  display:grid;
  gap:26px;
}
.page-faq .breadcrumb{margin-bottom:16px;}
.page-faq .faq-hero__title{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(34px,7.6vw,80px);
  line-height:1.03;
  letter-spacing:-.03em;
  margin:8px 0 16px;
}
.page-faq .faq-hero__lede{
  max-width:36em;
  color:var(--faq-muted);
  font-size:16px;
  line-height:1.85;
}
.page-faq .faq-hero__cta{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:24px;
}
.page-faq .faq-hero__figure{
  position:relative;
  margin:0;
  aspect-ratio:4/3;
  overflow:hidden;
  border-radius:6px;
  background:var(--stand);
}
.page-faq .faq-hero__figure img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body{padding-top:40px;}
.page-faq .faq-layout{display:grid;gap:26px;}

.page-faq .faq-index__title{
  font-size:12px;
  letter-spacing:.26em;
  color:var(--concrete);
  margin:0 0 12px;
  font-family:var(--font-mono);
  text-transform:uppercase;
}
.page-faq .faq-index__list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.page-faq .faq-index__list a{
  display:block;
  padding:7px 13px;
  font-size:13px;
  color:var(--faq-muted);
  border:1px solid var(--faq-line);
  border-radius:999px;
  transition:border-color .18s var(--ease), color .18s var(--ease);
}
.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible{
  color:var(--paper);
  border-color:var(--orange);
}

/* ---------- 章节 ---------- */
.page-faq .faq-block{
  margin-top:36px;
  padding-top:32px;
  border-top:1px solid var(--faq-line);
}
.page-faq .faq-stream > .faq-block:first-child{
  margin-top:0;
  padding-top:0;
  border-top:0;
}
.page-faq .faq-h2{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(24px,3.4vw,36px);
  line-height:1.2;
  letter-spacing:-.02em;
  margin:6px 0 12px;
}
.page-faq .faq-lead{
  max-width:44em;
  color:var(--faq-muted);
  font-size:15.5px;
  line-height:1.85;
  margin:0 0 18px;
}
.page-faq .faq-lead + .faq-lead{margin-top:-6px;}

.page-faq .faq-figure{
  aspect-ratio:30/13;
  overflow:hidden;
  border-radius:6px;
  margin:0 0 24px;
  background:var(--stand);
}
.page-faq .faq-figure img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}

/* ---------- 三步排查卡 ---------- */
.page-faq .step-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:14px;
}
.page-faq .step-card{
  position:relative;
  display:grid;
  grid-template-columns:52px minmax(0,1fr);
  gap:10px 16px;
  padding:20px 18px 18px;
  background:var(--stand);
  border:1px solid var(--faq-line);
  border-left:3px solid var(--cyan-deep);
  border-radius:4px;
  transition:transform .14s var(--ease), border-color .2s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease);
}
.page-faq .step-card__num{
  grid-column:1;
  grid-row:1 / span 2;
  align-self:start;
  font-family:var(--font-mono);
  font-size:21px;
  font-weight:700;
  line-height:1.1;
  color:var(--cyan);
  letter-spacing:-.02em;
}
.page-faq .step-card__body{grid-column:2;grid-row:1;min-width:0;}
.page-faq .step-card__title{
  font-size:17px;
  font-weight:700;
  line-height:1.5;
  margin:0 0 6px;
  color:var(--paper);
}
.page-faq .step-card__text{
  margin:0 0 10px;
  font-size:14.5px;
  line-height:1.75;
  color:var(--faq-muted);
}
.page-faq .step-card__tips{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:8px;
}
.page-faq .step-card__tips li{
  position:relative;
  padding-left:18px;
  font-size:14px;
  line-height:1.7;
  color:var(--faq-muted);
}
.page-faq .step-card__tips li::before{
  content:"";
  position:absolute;
  left:0;
  top:.62em;
  width:8px;
  height:2px;
  background:var(--cyan);
}
.page-faq .step-card__memo{
  margin:12px 0 0;
  font-size:12px;
  color:var(--orange-light);
  letter-spacing:.02em;
}
.page-faq .step-card__check{
  grid-column:2;
  grid-row:2;
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-top:6px;
  font-size:13px;
  color:var(--concrete);
  cursor:pointer;
  user-select:none;
}
.page-faq .step-card__check input{
  position:absolute;
  width:1px;
  height:1px;
  opacity:0;
}
.page-faq .step-card__box{
  flex:none;
  width:18px;
  height:18px;
  border:1px solid var(--line-strong);
  border-radius:3px;
  display:grid;
  place-items:center;
  transition:background .18s var(--ease), border-color .18s var(--ease);
}
.page-faq .step-card__box::after{
  content:"";
  width:9px;
  height:5px;
  border-left:2px solid var(--night);
  border-bottom:2px solid var(--night);
  transform:rotate(-45deg) scale(0);
  transition:transform .18s var(--ease);
}
.page-faq .step-card__check input:checked + .step-card__box{
  background:var(--green);
  border-color:var(--green);
}
.page-faq .step-card__check input:checked + .step-card__box::after{
  transform:rotate(-45deg) scale(1);
}
.page-faq .step-card__check input:checked ~ .step-card__label{color:var(--green);}
.page-faq .step-card__check input:focus-visible + .step-card__box{
  outline:2px solid var(--cyan);
  outline-offset:2px;
}
.page-faq .step-card:has(.step-check:checked){
  border-left-color:var(--green);
  background:linear-gradient(90deg,rgba(61,214,140,.08),var(--stand) 46%);
}

.page-faq .step-result{
  margin-top:18px;
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:16px 18px;
  background:var(--glass);
  border:1px dashed var(--line-strong);
  border-radius:4px;
}
.page-faq .step-result p{
  margin:0;
  font-size:14.5px;
  line-height:1.8;
  color:var(--faq-muted);
}
.page-faq .step-result strong{color:var(--paper);}

/* ---------- 手风琴问答 ---------- */
.page-faq .faq-list{display:grid;gap:10px;}
.page-faq .faq-item{
  background:var(--stand);
  border:1px solid var(--faq-line);
  border-radius:4px;
  overflow:hidden;
  scroll-margin-top:80px;
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.page-faq .faq-item[open]{border-color:var(--line-strong);}
.page-faq .faq-item:target{
  border-color:var(--cyan);
  box-shadow:0 0 0 1px rgba(41,224,208,.35);
}
.page-faq .faq-item__q{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:16px 18px;
  font-size:15.5px;
  font-weight:600;
  line-height:1.6;
  color:var(--paper);
  cursor:pointer;
  list-style:none;
}
.page-faq .faq-item__q::-webkit-details-marker{display:none;}
.page-faq .faq-item__q:hover{color:var(--orange-light);}
.page-faq .faq-item__no{
  flex:none;
  padding-top:3px;
  font-size:12px;
  color:var(--cyan);
}
.page-faq .faq-item__q::after{
  content:"";
  flex:none;
  margin-left:auto;
  margin-top:7px;
  width:9px;
  height:9px;
  border-right:2px solid var(--orange);
  border-bottom:2px solid var(--orange);
  transform:rotate(45deg);
  transition:transform .22s var(--ease);
}
.page-faq .faq-item[open] .faq-item__q::after{transform:rotate(-135deg);}
.page-faq .faq-item__a{
  padding:0 18px 18px;
  border-top:1px dashed var(--faq-line);
  margin-top:0;
}
.page-faq .faq-item__a p{
  margin:14px 0 0;
  font-size:14.5px;
  line-height:1.85;
  color:var(--faq-muted);
}
.page-faq .faq-item__a p + p{margin-top:10px;}

/* ---------- 移动端异常卡 ---------- */
.page-faq .issue-grid{
  display:grid;
  gap:14px;
  align-items:start;
}
.page-faq .issue-card{
  padding:18px 16px 20px;
  background:var(--stand);
  border:1px solid var(--faq-line);
  border-top:3px solid var(--cyan);
  border-radius:4px;
  transition:transform .14s var(--ease);
}
.page-faq .issue-card__title{
  font-size:16px;
  font-weight:700;
  margin:0 0 8px;
  line-height:1.5;
}
.page-faq .issue-card p{
  margin:0;
  font-size:14px;
  line-height:1.8;
  color:var(--faq-muted);
}

/* ---------- 交接区 ---------- */
.page-faq .faq-handoff{display:grid;gap:16px;align-items:start;}
.page-faq .handoff-card{
  padding:20px 18px 22px;
  background:var(--stand);
  border:1px solid var(--faq-line);
  border-radius:4px;
}
.page-faq .handoff-card--accent{
  background:linear-gradient(160deg,rgba(41,224,208,.10),var(--stand-2) 60%);
  border-color:rgba(41,224,208,.3);
}
.page-faq .handoff-card__title{
  font-size:16px;
  font-weight:700;
  margin:0 0 14px;
  line-height:1.5;
}
.page-faq .handoff-card__text{
  margin:0 0 16px;
  font-size:14.5px;
  line-height:1.85;
  color:var(--faq-muted);
}

.page-faq .check-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:10px;
}
.page-faq .check-list li{
  position:relative;
  padding-left:20px;
  font-size:14px;
  line-height:1.75;
  color:var(--faq-muted);
}
.page-faq .check-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.7em;
  width:9px;
  height:9px;
  border:1px solid var(--cyan);
  border-radius:50%;
}

/* ---------- 通知块 ---------- */
.page-faq .faq-block--notice{
  background:linear-gradient(120deg,rgba(255,107,26,.09),transparent 62%);
  border-left:3px solid var(--orange);
  border-radius:4px;
  padding:24px 20px 20px;
  border-top:1px solid var(--faq-line);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-foot{padding-top:34px;}
.page-faq .faq-foot__inner{
  padding:22px 20px;
  background:var(--stand);
  border:1px solid var(--faq-line);
  border-radius:4px;
  border-bottom:3px solid var(--orange);
}
.page-faq .faq-foot__text{
  margin:0;
  max-width:48em;
  font-size:14.5px;
  line-height:1.85;
  color:var(--faq-muted);
}

/* ---------- 响应式 ---------- */
@media (hover:hover){
  .page-faq .step-card:hover{
    transform:translateY(-4px);
    box-shadow:0 16px 34px rgba(0,0,0,.34);
  }
  .page-faq .issue-card:hover{transform:translateY(-4px);}
}

@media (min-width:760px){
  .page-faq .issue-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .page-faq .issue-card:nth-child(2){margin-top:18px;}
  .page-faq .issue-card:nth-child(3){margin-top:36px;}
  .page-faq .faq-handoff{grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
  .page-faq .step-card{
    grid-template-columns:70px minmax(0,1fr);
    padding:22px 24px 20px;
  }
}

@media (min-width:900px){
  .page-faq .faq-hero{padding:34px 0 10px;}
  .page-faq .faq-hero__grid{
    grid-template-columns:minmax(0,1.45fr) minmax(280px,.72fr);
    gap:48px;
    align-items:center;
  }
  .page-faq .faq-hero__figure{aspect-ratio:9/11;}
  .page-faq .faq-hero__lede{font-size:17px;}
}

@media (min-width:1024px){
  .page-faq .faq-layout{
    grid-template-columns:236px minmax(0,1fr);
    gap:56px;
  }
  .page-faq .faq-index{
    position:sticky;
    top:24px;
    align-self:start;
  }
  .page-faq .faq-index__list{
    display:block;
    border-left:1px solid var(--faq-line);
  }
  .page-faq .faq-index__list li + li{margin-top:2px;}
  .page-faq .faq-index__list a{
    border:0;
    border-left:2px solid transparent;
    border-radius:0;
    padding:9px 0 9px 16px;
    font-size:13.5px;
    line-height:1.5;
  }
  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible{
    border-left-color:var(--orange);
    background:linear-gradient(90deg,rgba(255,107,26,.12),transparent);
  }
  .page-faq .faq-h2{font-size:clamp(28px,3vw,38px);}
}

@media (prefers-reduced-motion:reduce){
  .page-faq .step-card,
  .page-faq .issue-card,
  .page-faq .faq-item__q::after,
  .page-faq .step-card__box::after{
    transition:opacity .2s linear;
  }
  .page-faq .faq-item__q::after{transition:none;}
  .page-faq .step-card:hover,
  .page-faq .issue-card:hover{transform:none;}
}