.page-contact{
  --c-hair:rgba(124,138,165,.22);
  --c-hair-light:#D7DEEA;
  --c-on-deep-line:rgba(233,238,249,.16);
  --c-body:#39435C;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  overflow-x:hidden;
}

.page-contact .breadcrumbs{
  margin-top:clamp(20px,3vw,38px);
  margin-bottom:clamp(8px,1.6vw,18px);
}

/* ---------- 刊头 ---------- */
.page-contact .contact-mast{
  padding-bottom:clamp(36px,6vw,84px);
}
.page-contact .contact-mast h1{
  margin:.34em 0 .5em;
  font-size:clamp(30px,4.6vw,64px);
  line-height:1.08;
  letter-spacing:-.02em;
  font-weight:900;
  max-width:19ch;
}
.page-contact .contact-mast .lede{
  color:var(--c-body);
  max-width:36ch;
}

.page-contact .mast-meta{
  list-style:none;
  margin:clamp(24px,3.4vw,40px) 0 0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:clamp(20px,3vw,44px);
}
.page-contact .mast-meta__item{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding-left:14px;
  border-left:2px solid var(--cyan-ink);
}
.page-contact .mast-meta__val{
  font-size:clamp(16px,1.6vw,19px);
  color:var(--indigo-900);
  letter-spacing:.04em;
}
.page-contact .mast-meta__key{
  font-size:12.5px;
  letter-spacing:.02em;
  color:var(--muted);
}

/* ---------- 图片容器 ---------- */
.page-contact .fig{
  margin:0;
  position:relative;
  overflow:hidden;
  background:var(--indigo-800);
  border:1px solid var(--c-hair-light);
  border-radius:4px;
}
.page-contact .fig img{
  display:block;
  width:100%;
  height:100%;
  max-width:100%;
  object-fit:cover;
}
.page-contact .fig--mast{
  aspect-ratio:16 / 11;
  box-shadow:var(--shadow-1);
}
.page-contact .fig--resp{
  aspect-ratio:10 / 7;
  border-color:var(--c-hair);
}

/* ---------- 渠道卡片 ---------- */
.page-contact .chan-grid{
  display:grid;
  gap:16px;
}
.page-contact .chan-card{
  position:relative;
  padding:clamp(20px,2.6vw,30px);
  border:1px solid var(--line-dark);
  border-radius:4px;
  background:var(--indigo-800);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.page-contact .chan-card:hover{
  border-color:var(--line-cyan);
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
}
.page-contact .chan-card__icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:3px;
  color:var(--cyan);
  border:1px solid var(--line-cyan);
  background:rgba(34,224,214,.06);
  margin-bottom:14px;
}
.page-contact .chan-card__title{
  margin:0 0 10px;
  font-size:19px;
  font-weight:800;
  color:var(--on-dark);
  letter-spacing:-.01em;
}
.page-contact .chan-card__val{
  margin:0 0 12px;
  font-size:15px;
  letter-spacing:.02em;
  color:var(--cyan);
  word-break:break-word;
}
.page-contact .chan-card__val:not(.mono){
  color:var(--on-dark);
  font-weight:600;
}
.page-contact .chan-card__desc{
  margin:0 0 18px;
  font-size:14.5px;
  line-height:1.7;
  color:var(--on-dark-muted);
}
.page-contact .chan-card .copy-btn{
  border-color:var(--line-dark);
  color:var(--on-dark);
}
.page-contact .chan-card .copy-btn:hover{
  border-color:var(--cyan);
  color:var(--cyan);
}

/* ---------- 响应时间刻度 ---------- */
.page-contact .scale{
  margin:clamp(26px,3.6vw,42px) 0 0;
}
.page-contact .scale__track{
  position:relative;
  height:8px;
  border-radius:4px;
  background:linear-gradient(90deg,var(--indigo-700) 0%,var(--indigo-800) 52%,var(--cyan-ink) 100%);
}
.page-contact .scale__track::after{
  content:"";
  position:absolute;
  right:0;
  top:-5px;
  width:2px;
  height:18px;
  border-radius:1px;
  background:var(--cyan-ink);
}
.page-contact .scale__ticks{
  list-style:none;
  margin:12px 0 0;
  padding:0;
  display:flex;
  justify-content:space-between;
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--muted);
}
.page-contact .resp-notes{
  list-style:none;
  margin:clamp(26px,3.4vw,40px) 0 0;
  padding:0;
  border-top:1px solid var(--c-hair-light);
}
.page-contact .resp-note{
  display:grid;
  grid-template-columns:1fr;
  gap:6px;
  padding:18px 0;
  border-bottom:1px solid var(--c-hair-light);
}
.page-contact .resp-note__key{
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--cyan-ink);
}
.page-contact .resp-note p{
  margin:0;
  font-size:15px;
  line-height:1.7;
  color:var(--c-body);
}

/* ---------- 准备清单 ---------- */
.page-contact .prep-list{
  list-style:none;
  margin:clamp(22px,3vw,32px) 0 0;
  padding:0;
  border-top:1px solid var(--c-hair-light);
  counter-reset:none;
}
.page-contact .prep-item{
  display:grid;
  grid-template-columns:38px 1fr;
  gap:clamp(10px,2vw,22px);
  padding:clamp(16px,2.2vw,24px) 0;
  border-bottom:1px solid var(--c-hair-light);
  transition:background-color .18s var(--ease);
}
.page-contact .prep-item:hover{
  background:rgba(34,224,214,.05);
}
.page-contact .prep-item__num{
  font-size:12.5px;
  letter-spacing:.1em;
  color:var(--cyan-ink);
  padding-top:3px;
}
.page-contact .prep-item__body h3{
  margin:0 0 6px;
  font-size:16.5px;
  font-weight:800;
  letter-spacing:-.01em;
}
.page-contact .prep-item__body p{
  margin:0;
  font-size:14.5px;
  line-height:1.7;
  color:var(--c-body);
}

/* ---------- 自助路径 ---------- */
.page-contact .help-grid{
  display:grid;
  gap:16px;
}
.page-contact .help-card{
  display:block;
  padding:clamp(20px,2.6vw,28px);
  border:1px solid var(--line-dark);
  border-radius:4px;
  background:rgba(11,22,51,.28);
  text-decoration:none;
  color:var(--on-dark);
  transition:border-color .2s var(--ease),background-color .2s var(--ease),transform .2s var(--ease);
}
.page-contact .help-card:hover,
.page-contact .help-card:focus-visible{
  border-color:var(--cyan);
  background:rgba(11,22,51,.55);
  transform:translateY(-2px);
}
.page-contact .help-card__tag{
  display:inline-block;
  font-size:11.5px;
  letter-spacing:.12em;
  color:var(--cyan);
  border:1px solid var(--line-cyan);
  border-radius:2px;
  padding:3px 8px;
  margin-bottom:12px;
}
.page-contact .help-card h3{
  margin:0 0 8px;
  font-size:18px;
  font-weight:800;
  letter-spacing:-.01em;
}
.page-contact .help-card p{
  margin:0 0 14px;
  font-size:14.5px;
  line-height:1.7;
  color:var(--on-dark-muted);
}
.page-contact .help-card__go{
  font-size:13px;
  letter-spacing:.06em;
  color:var(--cyan);
}
.page-contact .help-card__go::after{
  content:"→";
  margin-left:6px;
}
.page-contact .selfhelp-foot{
  margin:clamp(20px,2.6vw,28px) 0 0;
  font-size:14px;
  line-height:1.75;
  color:var(--on-dark-muted);
}
.page-contact .selfhelp-foot a{
  color:var(--cyan);
  text-decoration:none;
  border-bottom:1px solid var(--line-cyan);
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.page-contact .selfhelp-foot a:hover{
  border-bottom-color:var(--cyan);
}

/* ---------- 数据合作 ---------- */
.page-contact .mate-block{
  margin-top:clamp(20px,2.8vw,30px);
}
.page-contact .mate-fold{
  border-top:1px solid var(--c-on-deep-line);
}
.page-contact .mate-fold:last-child{
  border-bottom:1px solid var(--c-on-deep-line);
}
.page-contact .mate-fold summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 0;
  cursor:pointer;
  font-size:16px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--on-dark);
  list-style:none;
  transition:color .18s var(--ease);
}
.page-contact .mate-fold summary::-webkit-details-marker{
  display:none;
}
.page-contact .mate-fold summary::after{
  content:"+";
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:18px;
  line-height:1;
  color:var(--cyan);
}
.page-contact .mate-fold[open] summary::after{
  content:"–";
}
.page-contact .mate-fold summary:hover{
  color:var(--cyan);
}
.page-contact .mate-list{
  list-style:none;
  margin:0 0 20px;
  padding:0;
}
.page-contact .mate-list li{
  position:relative;
  padding:0 0 12px 20px;
  font-size:14.5px;
  line-height:1.72;
  color:var(--on-dark-muted);
}
.page-contact .mate-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--cyan);
  opacity:.75;
}

/* ---------- 处理进度 ---------- */
.page-contact .flow{
  list-style:none;
  margin:clamp(22px,3vw,34px) 0 0;
  padding:0;
}
.page-contact .flow__item{
  position:relative;
  display:grid;
  grid-template-columns:56px 1fr;
  gap:clamp(12px,2vw,24px);
  padding:0 0 clamp(26px,3.4vw,40px);
}
.page-contact .flow__item::before{
  content:"";
  position:absolute;
  left:22px;
  top:26px;
  bottom:0;
  width:1px;
  background:var(--c-hair-light);
}
.page-contact .flow__item:last-child{
  padding-bottom:0;
}
.page-contact .flow__item:last-child::before{
  display:none;
}
.page-contact .flow__num{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:center;
  width:45px;
  height:45px;
  border-radius:50%;
  border:1px solid var(--cyan-ink);
  background:var(--paper);
  color:var(--cyan-ink);
  font-size:12.5px;
  letter-spacing:.06em;
}
.page-contact .flow__body h3{
  margin:8px 0 8px;
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
}
.page-contact .flow__body p{
  margin:0;
  font-size:14.5px;
  line-height:1.72;
  color:var(--c-body);
}
.page-contact .closing{
  margin-top:clamp(28px,4vw,48px);
  padding-top:clamp(22px,3vw,32px);
  border-top:1px solid var(--c-hair-light);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:18px;
}
.page-contact .closing__text{
  margin:0;
  font-size:clamp(17px,2vw,21px);
  font-weight:800;
  letter-spacing:-.01em;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width:720px){
  .page-contact .chan-grid{
    grid-template-columns:repeat(3,minmax(0,1fr));
  }
  .page-contact .resp-note{
    grid-template-columns:120px 1fr;
    align-items:start;
    gap:18px;
  }
  .page-contact .help-grid{
    grid-template-columns:repeat(3,minmax(0,1fr));
  }
  .page-contact .prep-item__body h3{
    font-size:17.5px;
  }
}

@media (min-width:1000px){
  .page-contact .chan-grid{
    gap:20px;
  }
  .page-contact .help-grid{
    gap:20px;
  }
  .page-contact .contact-mast{
    padding-top:clamp(18px,2.6vw,34px);
  }
}