.page-faq{
  --faq-rail-w:216px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero{
  position:relative;
  padding:clamp(20px,4vw,52px) 0 clamp(16px,3vw,36px);
}
.page-faq .faq-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(to right,var(--line-faint) 1px,transparent 1px),
    linear-gradient(to bottom,var(--line-faint) 1px,transparent 1px);
  background-size:68px 68px;
  opacity:.55;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 82%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 82%);
  pointer-events:none;
}
.page-faq .faq-hero > .container{
  position:relative;
  z-index:1;
}
.page-faq .faq-hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:clamp(20px,3vw,36px);
  align-items:end;
}
.page-faq .faq-hero-lead h1{
  margin:10px 0 14px;
  font-size:clamp(30px,6vw,56px);
  line-height:1.08;
  letter-spacing:-.01em;
  font-weight:900;
}
.page-faq .faq-hero-lead .lede{
  max-width:60ch;
  color:var(--grey);
}
.page-faq .faq-hero-lead .lede strong{color:var(--white);}
.page-faq .faq-hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:22px;
}

/* 口径速查卡 */
.page-faq .faq-brief{
  border:2px solid var(--line);
  background:linear-gradient(155deg,var(--ink-2) 0%,var(--ink-3) 100%);
  box-shadow:var(--shadow);
  padding:18px 20px 20px;
}
.page-faq .faq-brief-title{
  margin:0 0 12px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--violet-soft);
}
.page-faq .faq-brief-list{
  list-style:none;
  margin:0;
  padding:0;
}
.page-faq .faq-brief-list li{
  display:flex;
  flex-wrap:wrap;
  gap:4px 14px;
  justify-content:space-between;
  align-items:baseline;
  padding:9px 0;
  border-top:1px solid var(--line-faint);
}
.page-faq .faq-brief-list li:first-child{border-top:0;}
.page-faq .faq-brief-key{
  font-size:13px;
  color:var(--grey);
}
.page-faq .faq-brief-val{
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--cyan);
}

/* ---------- 分类入口 ---------- */
.page-faq .faq-route-head{
  display:flex;
  flex-wrap:wrap;
  gap:8px 24px;
  align-items:baseline;
  justify-content:space-between;
  border-bottom:1px solid var(--line-soft);
  padding-bottom:12px;
}
.page-faq .faq-route-head h2{
  margin:0;
  font-size:clamp(20px,2.6vw,28px);
}
.page-faq .faq-route-note{
  margin:0;
  max-width:52ch;
  font-size:14px;
  color:var(--grey);
}
.page-faq .faq-flow-media{
  margin:clamp(20px,3vw,32px) 0 0;
}
.page-faq .faq-flow-media img{
  filter:saturate(.9) contrast(1.05);
}

.page-faq .faq-routes{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:14px;
  margin-top:clamp(18px,2.5vw,28px);
}
.page-faq .faq-route-card{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:18px 20px;
  border:2px solid var(--line);
  background:linear-gradient(160deg,var(--ink-2),var(--ink) 90%);
  box-shadow:5px 5px 0 0 var(--line-soft);
  color:var(--white);
  text-decoration:none;
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.page-faq .faq-route-card:hover{
  border-color:var(--cyan);
  transform:translate(-2px,-2px);
  box-shadow:7px 7px 0 0 rgba(53,230,224,.28);
}
.page-faq .faq-route-index{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.18em;
  color:var(--violet-soft);
}
.page-faq .faq-route-name{
  font-size:clamp(18px,2.2vw,22px);
  font-weight:800;
  line-height:1.3;
}
.page-faq .faq-route-meta{
  font-size:13px;
  color:var(--grey);
}
.page-faq .faq-route-state{
  margin-top:auto;
  padding-top:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--gold);
  border-top:1px dashed var(--line-soft);
}
.page-faq .faq-route-links{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:auto;
  padding-top:10px;
  border-top:1px dashed var(--line-soft);
}
.page-faq .faq-route-links a{
  font-size:13px;
  color:var(--cyan);
  text-decoration:none;
  border-bottom:1px solid rgba(53,230,224,.4);
}
.page-faq .faq-route-links a:hover{
  color:var(--white);
  border-bottom-color:var(--white);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:clamp(20px,3vw,36px);
}
.page-faq .faq-main{min-width:0;}

.page-faq .faq-rail{display:none;}
.page-faq .faq-rail-title{
  margin:0 0 10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--grey);
}
.page-faq .faq-rail-list{
  list-style:none;
  margin:0;
  padding:0;
  border-left:1px solid var(--line);
}
.page-faq .faq-rail-list a{
  display:flex;
  gap:10px;
  align-items:baseline;
  margin-left:-1.5px;
  padding:8px 0 8px 14px;
  border-left:2px solid transparent;
  font-size:13px;
  color:var(--grey);
  text-decoration:none;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.page-faq .faq-rail-list a .num{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--line);
}
.page-faq .faq-rail-list a:hover{
  color:var(--cyan);
  border-left-color:var(--cyan);
}
.page-faq .faq-rail-list a:hover .num{color:var(--cyan);}
.page-faq .faq-rail-note{
  margin:14px 0 0;
  font-size:12px;
  line-height:1.7;
  color:var(--grey);
}

/* ---------- 筛选 ---------- */
.page-faq .faq-filterwrap{
  display:flex;
  flex-wrap:wrap;
  gap:12px 18px;
  align-items:center;
  justify-content:space-between;
  padding:12px 14px;
  border:1.5px solid var(--line);
  background:var(--ink-2);
  box-shadow:4px 4px 0 0 rgba(35,48,77,.55);
}
.page-faq .filter-btn{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
}
.page-faq .filter-btn[aria-pressed="true"]{
  border-color:var(--violet);
  background:rgba(108,59,244,.18);
  color:var(--white);
}
.page-faq .faq-filter-count{
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--grey);
}
.page-faq .faq-filter-count .num{color:var(--cyan);}

/* ---------- 问答组 ---------- */
.page-faq .faq-group{
  margin-top:clamp(28px,4vw,48px);
  padding-top:18px;
  border-top:1px solid var(--line-soft);
  min-width:0;
}
.page-faq .faq-group-head{margin-bottom:14px;}
.page-faq .faq-group-index{
  display:block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.2em;
  color:var(--cyan);
}
.page-faq .faq-group-head h2{
  margin:6px 0 4px;
  font-size:clamp(19px,2.4vw,26px);
  font-weight:800;
}
.page-faq .faq-group-note{
  margin:0;
  font-size:13px;
  color:var(--grey);
}

.page-faq .faq-data-media{
  margin:0 0 16px;
  border:1.5px solid var(--line);
  border-left:3px solid var(--violet-soft);
}

.page-faq .acc-item{
  position:relative;
  margin-bottom:10px;
  border:1.5px solid var(--line);
  background:linear-gradient(180deg,var(--ink-2) 0%,var(--ink) 100%);
  transition:border-color var(--dur) var(--ease);
}
.page-faq .acc-item::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:2px;
  background:var(--line);
  transition:background var(--dur) var(--ease);
}
.page-faq .acc-item[data-open]::before{
  background:linear-gradient(180deg,var(--violet),var(--cyan));
}
.page-faq .acc-item:hover{border-color:var(--cyan);}
.page-faq .acc-head{
  width:100%;
  display:flex;
  gap:14px;
  align-items:flex-start;
  padding:15px 18px;
  background:none;
  border:0;
  text-align:left;
  color:var(--white);
  font-family:inherit;
  font-size:clamp(15px,1.6vw,17px);
  font-weight:700;
  line-height:1.55;
  cursor:pointer;
}
.page-faq .acc-index{
  flex:0 0 auto;
  padding-top:4px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--violet-soft);
}
.page-faq .acc-title{flex:1 1 auto;min-width:0;}
.page-faq .acc-body{
  padding:0 18px 16px 56px;
  color:rgba(245,247,250,.8);
  font-size:15px;
  line-height:1.85;
  max-width:68ch;
}
.page-faq .acc-body p{margin:0 0 10px;}
.page-faq .acc-body p:last-child{margin-bottom:0;}
.page-faq .faq-alert{
  margin-top:12px;
  padding:8px 12px;
  border-left:3px solid var(--magenta);
  background:rgba(255,93,115,.08);
  font-size:13px;
  color:var(--white);
}

/* ---------- 联络带 ---------- */
.page-faq .faq-contact-band{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:clamp(20px,3vw,34px);
  padding:clamp(20px,3.4vw,42px);
  border:2px solid var(--line);
  border-top:2px solid var(--violet);
  background:
    linear-gradient(118deg,rgba(108,59,244,.24) 0%,rgba(53,230,224,.07) 52%,rgba(5,7,14,0) 100%),
    var(--ink-2);
  box-shadow:var(--shadow);
}
.page-faq .faq-contact-lead h2{
  margin:8px 0 12px;
  font-size:clamp(22px,3.4vw,36px);
  font-weight:900;
  line-height:1.15;
}
.page-faq .faq-contact-lead p{
  max-width:56ch;
  color:var(--grey);
}
.page-faq .faq-contact-types{
  list-style:none;
  margin:18px 0 0;
  padding:0;
  display:grid;
  gap:10px;
}
.page-faq .faq-contact-types li{
  display:flex;
  gap:12px;
  align-items:baseline;
  padding-bottom:10px;
  border-bottom:1px dashed var(--line-soft);
  font-size:14px;
  color:var(--white);
}
.page-faq .faq-contact-types .num{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--gold);
}
.page-faq .faq-contact-panel{
  padding:18px 20px;
  border:1.5px solid var(--line);
  background:rgba(5,7,14,.72);
}
.page-faq .faq-contact-label{
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--grey);
}
.page-faq .faq-contact-value{
  margin:6px 0 14px;
  font-size:clamp(15px,2vw,19px);
  color:var(--cyan);
  word-break:break-all;
}
.page-faq .faq-copy{margin-bottom:18px;}
.page-faq .faq-contact-note{
  margin:0;
  padding-top:14px;
  border-top:1px solid var(--line-faint);
  font-size:13px;
  line-height:1.8;
  color:var(--grey);
}
.page-faq .faq-contact-links{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:16px 0 0;
}

/* ---------- 响应式 ---------- */
@media (min-width:760px){
  .page-faq .faq-hero-grid{
    grid-template-columns:minmax(0,7fr) minmax(0,4fr);
    gap:clamp(24px,4vw,56px);
  }
  .page-faq .faq-routes{
    grid-template-columns:repeat(6,minmax(0,1fr));
  }
  .page-faq .faq-route-card--a{grid-column:span 4;}
  .page-faq .faq-route-card--b{grid-column:span 2;}
  .page-faq .faq-route-card--c{grid-column:span 2;}
  .page-faq .faq-route-card--d{grid-column:span 4;}
  .page-faq .faq-contact-band{
    grid-template-columns:minmax(0,1fr) minmax(0,320px);
    align-items:start;
  }
}

@media (min-width:1080px){
  .page-faq .faq-layout{
    grid-template-columns:minmax(0,1fr) var(--faq-rail-w);
  }
  .page-faq .faq-rail{
    display:block;
    position:sticky;
    top:calc(var(--header-h) + 22px);
    align-self:start;
  }
  .page-faq .acc-body{padding-left:60px;}
}

@media (max-width:759px){
  .page-faq .acc-body{padding-left:18px;}
  .page-faq .faq-flow-media img{aspect-ratio:16 / 10;}
}

@media (prefers-reduced-motion:reduce){
  .page-faq .faq-route-card,
  .page-faq .acc-item,
  .page-faq .acc-item::before,
  .page-faq .faq-rail-list a,
  .page-faq .faq-route-links a{
    transition:none;
  }
  .page-faq .faq-route-card:hover{
    transform:none;
    box-shadow:5px 5px 0 0 var(--line-soft);
  }
}
<<<END>>>