.page-contact{
  --pc-cut:polygon(0 0,100% 0,100% calc(100% - 20px),calc(100% - 20px) 100%,0 100%);
  --pc-cut-sm:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
  background:var(--ink);
  color:var(--text);
  overflow-x:hidden;
}

.page-contact .pc-crumb{
  padding-block:14px 4px;
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero{
  padding:clamp(12px,2.5vw,24px) 0 clamp(36px,6vw,68px);
}
.page-contact .pc-hero__title{
  max-width:16ch;
  margin:14px 0 0;
  font-size:clamp(30px,7vw,60px);
  line-height:1.06;
  letter-spacing:-.02em;
  font-weight:800;
}
.page-contact .pc-hero__lead{
  max-width:58ch;
  margin-top:18px;
  color:var(--muted);
  font-size:clamp(15px,1.6vw,17px);
  line-height:1.85;
}

.page-contact .pc-channels{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  margin-top:clamp(24px,4vw,42px);
  border:1.5px solid var(--line);
  background:linear-gradient(140deg,var(--panel),var(--ink-2));
  clip-path:var(--pc-cut);
  box-shadow:var(--hard);
}
.page-contact .pc-channels__bg{
  position:absolute;
  inset:0;
  z-index:-1;
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.3;
  filter:saturate(.75) contrast(1.05);
}
.page-contact .pc-channels__grid{
  display:grid;
  gap:0;
  padding:clamp(8px,2vw,16px);
}
.page-contact .pc-channel{
  padding:clamp(16px,3vw,26px);
}
.page-contact .pc-channel + .pc-channel{
  border-top:1px solid var(--line);
}
.page-contact .pc-channel__label{
  display:flex;
  align-items:center;
  gap:10px;
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.18em;
  color:var(--data);
  text-transform:uppercase;
}
.page-contact .pc-channel__label::before{
  content:"";
  width:18px;
  height:2px;
  background:var(--signal);
}
.page-contact .pc-channel__value{
  margin:12px 0 0;
  font-family:var(--font-mono);
  font-size:clamp(17px,3.4vw,24px);
  line-height:1.28;
  font-variant-numeric:tabular-nums;
  color:var(--signal);
  overflow-wrap:anywhere;
  word-break:break-word;
}
.page-contact .pc-channel__text{
  max-width:34ch;
  margin:10px 0 14px;
  font-size:14px;
  line-height:1.75;
  color:var(--muted);
}

/* ---------- 章节骨架 ---------- */
.page-contact .pc-section{
  padding-block:clamp(36px,6vw,68px);
}
.page-contact .pc-section--alt{
  background:var(--ink-2);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.page-contact .pc-section--narrow{
  padding-block:clamp(36px,6vw,72px);
}
.page-contact .pc-sec-head{
  max-width:62ch;
  margin-bottom:clamp(20px,3vw,32px);
}
.page-contact .pc-sec-head__note{
  margin:12px 0 0;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}

/* ---------- 问题分流 ---------- */
.page-contact .pc-routes{
  display:grid;
  gap:14px;
}
.page-contact .pc-route{
  position:relative;
  padding:20px 18px 20px 24px;
  background:var(--panel);
  border:1.5px solid var(--line);
  clip-path:var(--pc-cut-sm);
  box-shadow:var(--hard);
}
.page-contact .pc-route::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:4px;
  background:var(--signal);
}
.page-contact .pc-route--alert::before{
  background:var(--alert);
}
.page-contact .pc-route--data::before{
  background:var(--data);
}
.page-contact .pc-route .wm-h3{
  margin:0 0 10px;
}
.page-contact .pc-route__text{
  margin:0 0 16px;
  font-size:14.5px;
  line-height:1.8;
  color:var(--muted);
}
.page-contact .pc-route__meta{
  display:grid;
  gap:8px;
  margin:0;
  padding-top:14px;
  border-top:1px dashed var(--line);
}
.page-contact .pc-route__meta > div{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:12px;
  align-items:baseline;
}
.page-contact .pc-route__meta dt{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--data);
}
.page-contact .pc-route__meta dd{
  margin:0;
  font-size:13.5px;
  line-height:1.7;
  color:var(--text);
}

/* ---------- 响应节奏 ---------- */
.page-contact .pc-tabs__btns{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.page-contact .pc-tabpanel{
  margin-top:18px;
  padding:18px 20px;
  background:var(--ink-2);
  border-left:3px solid var(--signal);
}
.page-contact .pc-tabpanel p{
  max-width:60ch;
  margin:0;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
}

/* ---------- 提交要点 ---------- */
.page-contact .pc-prep{
  display:grid;
  gap:clamp(22px,4vw,40px);
}
.page-contact .pc-steps{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:0;
}
.page-contact .pc-step{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:16px;
  padding:16px 0;
  border-top:1px solid var(--line);
}
.page-contact .pc-step:last-child{
  border-bottom:1px solid var(--line);
}
.page-contact .pc-step__num{
  font-family:var(--font-mono);
  font-size:18px;
  line-height:1.3;
  color:var(--signal);
  font-variant-numeric:tabular-nums;
}
.page-contact .pc-step__title{
  margin:0 0 6px;
  font-size:16px;
  line-height:1.45;
  letter-spacing:-.01em;
}
.page-contact .pc-step__text{
  margin:0;
  font-size:14px;
  line-height:1.8;
  color:var(--muted);
}

.page-contact .pc-media{
  position:relative;
  margin:0;
  border:1.5px solid var(--line);
  background:var(--panel);
  clip-path:var(--pc-cut-sm);
  overflow:hidden;
  box-shadow:var(--hard);
}
.page-contact .pc-media img{
  display:block;
  width:100%;
  max-width:100%;
  height:auto;
  aspect-ratio:3 / 2;
  object-fit:cover;
}
.page-contact .pc-media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:repeating-linear-gradient(180deg,rgba(5,16,13,.28) 0 1px,transparent 1px 4px);
  mix-blend-mode:multiply;
}
.page-contact .pc-media__cap{
  padding:12px 16px;
  font-size:13px;
  line-height:1.65;
  color:var(--muted);
  border-top:1px solid var(--line);
  background:var(--ink-2);
}

/* ---------- 合作 ---------- */
.page-contact .pc-coop__prose{
  max-width:66ch;
}
.page-contact .pc-coop__prose p{
  margin:0 0 1.2em;
  font-size:15px;
  line-height:1.9;
  color:var(--muted);
}
.page-contact .pc-coop__prose p:first-child{
  color:var(--text);
}

/* ---------- 自助入口 ---------- */
.page-contact .pc-links{
  display:grid;
  gap:12px;
}
.page-contact .pc-link{
  display:grid;
  gap:6px;
  padding:18px;
  text-decoration:none;
  color:var(--text);
  background:var(--ink-2);
  border:1.5px solid var(--line);
  clip-path:var(--pc-cut-sm);
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.page-contact .pc-link:hover,
.page-contact .pc-link:focus-visible{
  border-color:var(--signal);
  transform:translateY(-2px);
}
.page-contact .pc-link__tag{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--data);
}
.page-contact .pc-link__title{
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
}
.page-contact .pc-link:hover .pc-link__title,
.page-contact .pc-link:focus-visible .pc-link__title{
  color:var(--signal);
}
.page-contact .pc-link__desc{
  font-size:13.5px;
  line-height:1.7;
  color:var(--muted);
}

/* ---------- 收尾信号带 ---------- */
.page-contact .pc-signal{
  margin-top:clamp(32px,6vw,72px);
  padding:clamp(26px,5vw,48px) 0;
  border-top:1px solid var(--signal);
  background:
    repeating-linear-gradient(180deg,rgba(198,255,46,.07) 0 1px,transparent 1px 5px),
    var(--ink-2);
}
.page-contact .pc-signal__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.page-contact .pc-signal__text{
  max-width:44ch;
  margin:0;
  font-size:clamp(15px,2vw,19px);
  line-height:1.7;
  font-weight:700;
  color:var(--text);
}
.page-contact .pc-signal .wm-btn{
  text-decoration:none;
}

/* ---------- 断点 ---------- */
@media (min-width:640px){
  .page-contact .pc-links{
    grid-template-columns:1fr 1fr;
  }
}

@media (min-width:880px){
  .page-contact .pc-channels__grid{
    grid-template-columns:repeat(3,1fr);
  }
  .page-contact .pc-channel + .pc-channel{
    border-top:0;
    border-left:1px solid var(--line);
  }
  .page-contact .pc-routes{
    grid-template-columns:1fr 1fr;
    gap:18px;
  }
}

@media (min-width:900px){
  .page-contact .pc-prep{
    grid-template-columns:1.05fr .95fr;
    align-items:start;
  }
  .page-contact .pc-media{
    margin-top:8px;
  }
}
<<<END>>>