.page-faq{
  --faq-gap:clamp(1.75rem,4vw,3.25rem);
  --faq-hair:1px solid var(--line);
  display:block;
  padding-block:clamp(1.5rem,4vw,3rem) clamp(3rem,7vw,6rem);
  color:var(--text);
}

.page-faq .breadcrumb{
  margin-bottom:clamp(1.25rem,3vw,2rem);
}

/* ---------- Hero ---------- */
.page-faq .faq-hero{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(1.5rem,4vw,3rem);
  align-items:end;
}
.page-faq .faq-hero__lead{
  display:flex;
  flex-direction:column;
  gap:clamp(.85rem,1.8vw,1.25rem);
}
.page-faq .faq-hero__lead .display-title{
  margin:0;
  letter-spacing:.02em;
  line-height:.98;
}
.page-faq .faq-hero__intro{
  margin:0;
  max-width:38ch;
  font-size:15.5px;
  line-height:1.8;
  color:var(--text);
  opacity:.86;
}
.page-faq .faq-hero__meta{
  margin:0;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--muted);
}
.page-faq .faq-hero__figure{
  margin:0;
  position:relative;
}
.page-faq .faq-hero__figure .frame__media{
  width:100%;
  max-width:100%;
  height:auto;
  object-fit:cover;
  display:block;
}
.page-faq .faq-hero__figure::before{
  content:"";
  position:absolute;
  left:0;
  top:-1px;
  width:38%;
  height:1px;
  background:linear-gradient(90deg,var(--cyan-a),var(--cyan-b),transparent);
  z-index:2;
}

/* ---------- 三步排查 ---------- */
.page-faq .faq-step{
  margin-top:clamp(3rem,7vw,5.5rem);
}
.page-faq .faq-step .section-head{
  display:flex;
  flex-wrap:wrap;
  gap:.5rem 1.5rem;
  align-items:baseline;
  justify-content:space-between;
  border-bottom:var(--faq-hair);
  padding-bottom:.9rem;
}
.page-faq .step-flow{
  list-style:none;
  margin:clamp(1.5rem,3vw,2.5rem) 0 0;
  padding:0;
  display:grid;
  grid-template-columns:1fr;
  gap:1px;
  background:var(--line);
  border:var(--faq-hair);
  position:relative;
}
.page-faq .step-flow::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  height:2px;
  width:100%;
  background:linear-gradient(90deg,var(--cyan-a),var(--cyan-b) 45%,var(--signal));
  opacity:.75;
}
.page-faq .step-flow__item{
  background:var(--ink-2);
  padding:clamp(1.25rem,2.6vw,2rem);
  display:flex;
  flex-direction:column;
  gap:.6rem;
}
.page-faq .step-flow__item .index-num{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--mint);
}
.page-faq .step-flow__title{
  margin:0;
  font-size:clamp(17px,1.9vw,21px);
  font-weight:500;
  letter-spacing:.01em;
}
.page-faq .step-flow__text{
  margin:0;
  font-size:14.5px;
  line-height:1.75;
  color:var(--muted);
}
.page-faq .step-flow__link{
  margin-top:auto;
  align-self:flex-start;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--signal);
  text-decoration:none;
  border-bottom:1px solid var(--green-deep);
  padding-bottom:.15rem;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.page-faq .step-flow__link:hover{
  color:var(--mint);
  border-color:var(--mint);
}

/* ---------- 布局 ---------- */
.page-faq .faq-layout{
  margin-top:clamp(3rem,7vw,5.5rem);
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(2rem,4vw,3rem);
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index{
  border-top:var(--faq-hair);
  padding-top:1rem;
}
.page-faq .faq-index .eyebrow{
  margin:0 0 .9rem;
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
}
.page-faq .faq-index__list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:1fr;
}
.page-faq .faq-index__item + .faq-index__item{
  border-top:var(--faq-hair);
}
.page-faq .faq-index__link{
  display:flex;
  align-items:baseline;
  gap:.75rem;
  padding:.72rem 0;
  font-size:14px;
  color:var(--text);
  text-decoration:none;
  transition:color .2s var(--ease),padding-left .24s var(--ease);
}
.page-faq .faq-index__link .mono{
  font-size:11.5px;
  color:var(--idle);
  letter-spacing:.1em;
  transition:color .2s var(--ease);
}
.page-faq .faq-index__link:hover{
  color:var(--mint);
  padding-left:.4rem;
}
.page-faq .faq-index__link:hover .mono{
  color:var(--signal);
}

/* ---------- 筛选 chips ---------- */
.page-faq .faq-filters{
  margin-bottom:clamp(1.25rem,2.5vw,2rem);
}
.page-faq .faq-filters .chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:.5rem;
}
.page-faq .faq-filters .chip{
  cursor:pointer;
  font-size:12.5px;
  letter-spacing:.04em;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group{
  border-top:var(--faq-hair);
  padding-top:clamp(1.25rem,2.4vw,1.75rem);
}
.page-faq .faq-group + .faq-group{
  margin-top:clamp(2.5rem,5vw,4rem);
}
.page-faq .faq-group__head{
  display:flex;
  align-items:baseline;
  gap:.9rem;
  margin-bottom:.75rem;
}
.page-faq .faq-group__head .index-num{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--signal);
}
.page-faq .faq-group__title{
  margin:0;
  font-size:clamp(20px,2.4vw,30px);
  font-weight:500;
  letter-spacing:.01em;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item{
  border-bottom:var(--faq-hair);
  position:relative;
}
.page-faq .faq-item::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:2px;
  background:linear-gradient(180deg,var(--cyan-a),var(--cyan-b));
  opacity:0;
  transition:opacity .24s var(--ease);
}
.page-faq .faq-item:hover::before,
.page-faq .faq-item[data-open="true"]::before{
  opacity:.85;
}
.page-faq .faq-item__title{
  margin:0;
  font-size:inherit;
  font-weight:inherit;
}
.page-faq .faq-item__trigger{
  width:100%;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:1rem;
  padding:1.05rem 0 1.05rem .9rem;
  background:none;
  border:0;
  border-radius:0;
  color:var(--text);
  font-family:inherit;
  font-size:clamp(14.5px,1.55vw,16.5px);
  font-weight:400;
  line-height:1.6;
  letter-spacing:.01em;
  text-align:left;
  cursor:pointer;
  transition:color .2s var(--ease);
}
.page-faq .faq-item__trigger:hover{
  color:var(--mint);
}
.page-faq .fold__mark{
  position:relative;
  flex:0 0 auto;
  width:18px;
  height:18px;
  margin-top:.28rem;
  border:1px solid var(--idle);
  border-radius:50%;
  transition:border-color .22s var(--ease),background-color .22s var(--ease);
}
.page-faq .fold__mark::before,
.page-faq .fold__mark::after{
  content:"";
  position:absolute;
  top:50%;
  left:50%;
  background:var(--muted);
  transition:transform .22s var(--ease),background-color .22s var(--ease);
}
.page-faq .fold__mark::before{
  width:8px;
  height:1px;
  transform:translate(-50%,-50%);
}
.page-faq .fold__mark::after{
  width:1px;
  height:8px;
  transform:translate(-50%,-50%);
}
.page-faq .faq-item__trigger:hover .fold__mark{
  border-color:var(--mint);
}
.page-faq .faq-item__trigger:hover .fold__mark::before,
.page-faq .faq-item__trigger:hover .fold__mark::after{
  background:var(--mint);
}
.page-faq [data-open="true"] .fold__mark{
  border-color:var(--signal);
  background:rgba(61,242,164,.12);
}
.page-faq [data-open="true"] .fold__mark::before,
.page-faq [data-open="true"] .fold__mark::after{
  background:var(--signal);
}
.page-faq [data-open="true"] .fold__mark::after{
  transform:translate(-50%,-50%) scaleY(0);
}

.page-faq .faq-item__body{
  padding:0 .9rem 1.35rem .9rem;
}
.page-faq .faq-item__body p{
  margin:0 0 .85rem;
  max-width:46ch;
  font-size:14.8px;
  line-height:1.8;
  color:var(--muted);
}
.page-faq .faq-item__body p:last-child{
  margin-bottom:0;
}
.page-faq .faq-more-line{
  margin-top:.9rem;
}

/* ---------- 相关链接条 ---------- */
.page-faq .faq-more{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  padding-bottom:.3rem;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--mint);
  text-decoration:none;
}
.page-faq .faq-more::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  height:1px;
  width:1.6rem;
  background:linear-gradient(90deg,var(--cyan-a),var(--cyan-b));
  transition:width .3s var(--ease);
}
.page-faq .faq-more:hover{
  color:var(--signal);
}
.page-faq .faq-more:hover::after{
  width:100%;
}

/* ---------- 联系与响应 ---------- */
.page-faq .faq-contact{
  margin-top:clamp(3rem,7vw,5.5rem);
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(2rem,4vw,3rem);
  border-top:var(--faq-hair);
  padding-top:clamp(1.75rem,3.5vw,2.75rem);
}
.page-faq .faq-contact__body .eyebrow{
  margin:0 0 .7rem;
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
}
.page-faq .faq-contact__title{
  margin:0 0 .9rem;
  font-size:clamp(24px,3.2vw,40px);
  font-weight:500;
  letter-spacing:.01em;
  line-height:1.15;
}
.page-faq .faq-contact__text{
  margin:0 0 1.6rem;
  max-width:48ch;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}
.page-faq .faq-contact__list{
  list-style:none;
  margin:0 0 1.4rem;
  padding:0;
}
.page-faq .faq-contact__row{
  display:flex;
  flex-wrap:wrap;
  gap:.35rem 1.25rem;
  align-items:baseline;
  padding:.8rem 0;
  border-top:var(--faq-hair);
}
.page-faq .faq-contact__row:last-child{
  border-bottom:var(--faq-hair);
}
.page-faq .faq-contact__key{
  flex:0 0 auto;
  min-width:5.5rem;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--idle);
  text-transform:uppercase;
}
.page-faq .faq-contact__value{
  font-size:15px;
  color:var(--text);
  text-decoration:none;
  font-variant-numeric:tabular-nums;
}
.page-faq a.faq-contact__value:hover{
  color:var(--signal);
}
.page-faq .faq-contact__note{
  margin:0 0 1.4rem;
  max-width:48ch;
  font-size:13.5px;
  line-height:1.75;
  color:var(--muted);
}
.page-faq .faq-contact__cta{
  margin:0;
}
.page-faq .faq-contact__aside{
  display:flex;
  flex-direction:column;
  gap:1.25rem;
}
.page-faq .faq-contact__figure{
  margin:0;
}
.page-faq .faq-contact__figure .frame__media{
  width:100%;
  max-width:100%;
  height:auto;
  object-fit:cover;
  display:block;
}
.page-faq .faq-stat{
  display:grid;
  grid-template-columns:1fr;
  gap:1px;
  background:var(--line);
  border:var(--faq-hair);
}
.page-faq .faq-stat .data-card{
  background:var(--panel);
  padding:1rem 1.1rem;
  display:flex;
  flex-direction:column;
  gap:.35rem;
}
.page-faq .faq-stat .data-card__label{
  font-size:12px;
  letter-spacing:.1em;
  color:var(--muted);
}
.page-faq .faq-stat .data-card__value{
  font-size:22px;
  letter-spacing:-.01em;
  color:var(--mint);
}
.page-faq .faq-contact__link{
  margin:0;
}

/* ---------- 响应式 ---------- */
@media (min-width:720px){
  .page-faq .step-flow{
    grid-template-columns:repeat(3,1fr);
  }
  .page-faq .faq-stat{
    grid-template-columns:repeat(2,1fr);
  }
}

@media (min-width:900px){
  .page-faq .faq-hero{
    grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);
  }
  .page-faq .faq-contact{
    grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
    align-items:start;
  }
}

@media (min-width:1020px){
  .page-faq .faq-layout{
    grid-template-columns:minmax(0,200px) minmax(0,1fr);
    align-items:start;
  }
  .page-faq .faq-index{
    position:sticky;
    top:7rem;
  }
}

@media (max-width:639px){
  .page-faq .faq-item__trigger{
    padding-left:.5rem;
  }
  .page-faq .faq-item__body{
    padding-left:.5rem;
    padding-right:.25rem;
  }
  .page-faq .faq-contact__key{
    min-width:100%;
  }
}

@media (prefers-reduced-motion:reduce){
  .page-faq .faq-index__link,
  .page-faq .faq-more::after,
  .page-faq .fold__mark,
  .page-faq .fold__mark::before,
  .page-faq .fold__mark::after,
  .page-faq .faq-item::before{
    transition:none;
  }
  .page-faq .faq-index__link:hover{
    padding-left:0;
  }
}