.page-contact{
  --contact-cut:14px;
  background:var(--ink);
  color:var(--haze);
  font-family:var(--font-sans);
  overflow-x:hidden;
}

.page-contact .contact-inner{
  width:100%;
  max-width:var(--shell-w);
  margin:0 auto;
  padding:0 20px;
}

/* ---------- 顶部联络带 ---------- */
.page-contact .contact-hero{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  padding:20px 0 38px;
  background:var(--ink-deep);
}
.page-contact .contact-hero-media{
  position:absolute;
  inset:0;
  z-index:-1;
}
.page-contact .contact-hero-media img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center 42%;
  opacity:.32;
  filter:saturate(.7) contrast(1.05);
}
.page-contact .contact-hero::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:linear-gradient(180deg,rgba(4,12,10,.62) 0%,rgba(7,18,15,.9) 62%,var(--ink) 100%);
}

.page-contact .breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0 0 22px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--muted-dim);
}
.page-contact .crumb{
  color:var(--muted);
  text-decoration:none;
}
.page-contact a.crumb:hover,
.page-contact a.crumb:focus-visible{
  color:var(--mint);
}
.page-contact .crumb-sep{
  color:var(--line);
}

.page-contact .eyebrow{
  margin:0 0 12px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--mint);
}

.page-contact #contact-title{
  margin:0 0 16px;
  max-width:22ch;
  font-size:clamp(30px,7.2vw,58px);
  line-height:1.06;
  letter-spacing:-.02em;
  font-weight:800;
  color:var(--haze);
}

.page-contact .lead{
  margin:0 0 24px;
  max-width:58ch;
  font-size:15px;
  line-height:1.8;
  color:var(--haze);
}

.page-contact .hero-index{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:0;
  padding:0;
  list-style:none;
}
.page-contact .index-link{
  display:inline-block;
  padding:7px 12px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--haze);
  text-decoration:none;
  background:rgba(14,33,27,.72);
  border:1px solid var(--line);
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,8px 100%,0 calc(100% - 8px));
  transition:color .16s var(--ease),background .16s var(--ease),border-color .16s var(--ease);
}
.page-contact .index-link:hover,
.page-contact .index-link:focus-visible,
.page-contact .index-link[aria-current="true"]{
  color:var(--ink);
  background:var(--mint);
  border-color:var(--mint);
}

/* ---------- 章节头 ---------- */
.page-contact .section-head{
  display:grid;
  gap:8px;
  margin:0 0 26px;
}
.page-contact .chapter-num{
  font-family:var(--font-num);
  font-size:46px;
  line-height:.85;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--mint);
}
.page-contact .chapter-title{
  margin:0;
  font-size:clamp(21px,4.6vw,32px);
  line-height:1.2;
  letter-spacing:-.02em;
  font-weight:800;
  color:var(--haze);
}
.page-contact .section-sub{
  margin:0;
  max-width:58ch;
  font-size:14px;
  line-height:1.75;
  color:var(--muted);
}

/* ---------- 三条渠道 ---------- */
.page-contact .contact-channels{
  padding:52px 0 56px;
  background:linear-gradient(180deg,var(--ink) 0%,var(--ink-deep) 100%);
}
.page-contact .channel-layout{
  display:grid;
  gap:22px;
  min-width:0;
}
.page-contact .channel-figure{
  margin:0;
  min-width:0;
}
.page-contact .channel-figure img{
  display:block;
  width:100%;
  height:auto;
  aspect-ratio:1 / 1;
  object-fit:cover;
  background:var(--panel);
  box-shadow:inset 0 0 0 1px var(--line);
  clip-path:polygon(0 0,calc(100% - var(--contact-cut)) 0,100% var(--contact-cut),100% 100%,var(--contact-cut) 100%,0 calc(100% - var(--contact-cut)));
}
.page-contact .channel-figure figcaption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.65;
  color:var(--muted-dim);
}

.page-contact .channel-cards{
  display:grid;
  gap:14px;
  margin:0;
  padding:0;
  list-style:none;
  min-width:0;
}
.page-contact .channel-card{
  position:relative;
  padding:20px 18px 22px;
  background:var(--panel);
  box-shadow:inset 0 0 0 1px var(--line);
  clip-path:polygon(0 0,calc(100% - var(--contact-cut)) 0,100% var(--contact-cut),100% 100%,var(--contact-cut) 100%,0 calc(100% - var(--contact-cut)));
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within{
  transform:translateY(-4px);
  box-shadow:inset 0 0 0 1px var(--mint);
}

.page-contact .channel-label{
  display:flex;
  align-items:center;
  gap:8px;
  margin:0 0 10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mint);
}
.page-contact .pulse-dot{
  flex:0 0 auto;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--pulse);
  animation:contactPulse 2.4s var(--ease) infinite;
}
@keyframes contactPulse{
  0%,100%{box-shadow:0 0 0 0 rgba(255,107,61,.55);}
  60%{box-shadow:0 0 0 7px rgba(255,107,61,0);}
}

.page-contact .channel-value{
  display:inline-block;
  padding-bottom:2px;
  font-family:var(--font-mono);
  font-size:clamp(15px,4.2vw,20px);
  line-height:1.5;
  color:var(--haze);
  text-decoration:none;
  border-bottom:1px solid var(--line);
  word-break:break-all;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.page-contact a.channel-value:hover,
.page-contact a.channel-value:focus-visible{
  color:var(--mint);
  border-color:var(--mint);
}
.page-contact .channel-value-static{
  border-bottom-color:transparent;
  font-size:clamp(14px,3.8vw,17px);
}
.page-contact .channel-note{
  margin:10px 0 0;
  font-size:13.5px;
  line-height:1.75;
  color:var(--muted);
}

/* ---------- 渠道选择 ---------- */
.page-contact .contact-routing{
  padding:6px 0 54px;
  background:var(--ink-deep);
}
.page-contact .route-list{
  margin:0;
  padding:0;
  list-style:none;
  border-top:1px solid var(--line);
}
.page-contact .route-row{
  display:grid;
  grid-template-columns:34px minmax(0,1fr);
  gap:6px 14px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
}
.page-contact .route-num{
  font-family:var(--font-num);
  font-size:26px;
  line-height:1;
  color:var(--muted-dim);
}
.page-contact .route-body{
  min-width:0;
}
.page-contact .route-body h3{
  margin:0 0 6px;
  font-size:16px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--haze);
}
.page-contact .route-body p{
  margin:0;
  font-size:13.5px;
  line-height:1.75;
  color:var(--muted);
}
.page-contact .route-tag{
  grid-column:2;
  justify-self:start;
  margin-top:4px;
}

.page-contact .tag{
  display:inline-block;
  padding:4px 9px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  border:1px solid var(--line);
  color:var(--haze);
  background:rgba(14,33,27,.6);
}
.page-contact .tag-amber{
  color:var(--amber);
  border-color:rgba(255,185,46,.45);
  background:rgba(255,185,46,.1);
}
.page-contact .tag-blue{
  color:var(--blue);
  border-color:rgba(76,141,255,.45);
  background:rgba(76,141,255,.1);
}
.page-contact .tag-mint{
  color:var(--mint);
  border-color:rgba(53,242,168,.45);
  background:var(--mint-soft);
}

/* ---------- 写信指引（暖纸分区） ---------- */
.page-contact .contact-writing{
  padding:58px 0 60px;
  background:var(--paper);
  color:var(--paper-ink);
  clip-path:polygon(0 26px,100% 0,100% 100%,0 100%);
}
.page-contact .contact-writing .chapter-num{
  color:#0B1A15;
}
.page-contact .contact-writing .chapter-title{
  color:var(--paper-ink);
}
.page-contact .contact-writing .section-sub{
  color:rgba(26,31,28,.72);
}

.page-contact .write-steps{
  display:grid;
  gap:16px;
  margin:0;
  padding:0;
  list-style:none;
}
.page-contact .write-step{
  position:relative;
  padding:18px 18px 20px;
  background:rgba(14,33,27,.05);
  border:1px solid rgba(26,31,28,.16);
  border-top:3px solid var(--panel);
}
.page-contact .step-num{
  display:block;
  margin-bottom:8px;
  font-family:var(--font-num);
  font-size:32px;
  line-height:1;
  color:#0B1A15;
}
.page-contact .write-step h3{
  margin:0 0 8px;
  font-size:16px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--paper-ink);
}
.page-contact .write-step p{
  margin:0;
  font-size:13.5px;
  line-height:1.75;
  color:rgba(26,31,28,.76);
}
.page-contact .write-note{
  margin:22px 0 0;
  padding:16px 18px;
  border-left:4px solid var(--amber);
  background:rgba(255,185,46,.16);
  font-size:13.5px;
  line-height:1.8;
  color:rgba(26,31,28,.84);
}

/* ---------- 处理节奏 ---------- */
.page-contact .contact-cadence{
  padding:54px 0 56px;
  background:var(--ink);
}
.page-contact .cadence-list{
  margin:0;
  padding:0;
  list-style:none;
}
.page-contact .cadence-item{
  position:relative;
  margin-left:5px;
  padding:0 0 26px 26px;
  border-left:1px solid var(--line);
}
.page-contact .cadence-item:last-child{
  padding-bottom:0;
  border-left-color:transparent;
}
.page-contact .cadence-item::before{
  content:"";
  position:absolute;
  left:-5px;
  top:5px;
  width:9px;
  height:9px;
  background:var(--mint);
  transform:rotate(45deg);
}
.page-contact .cadence-item h3{
  margin:0 0 8px;
  font-size:16px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--haze);
}
.page-contact .cadence-item p{
  margin:0;
  max-width:62ch;
  font-size:13.5px;
  line-height:1.8;
  color:var(--muted);
}

/* ---------- 地址与备案 ---------- */
.page-contact .contact-registry{
  padding:0 0 56px;
  background:var(--ink);
}
.page-contact .registry-panel{
  padding:26px 20px 28px;
  background:var(--panel);
  box-shadow:inset 0 0 0 1px var(--line);
  clip-path:polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,16px 100%,0 calc(100% - 16px));
}
.page-contact .registry-list{
  display:grid;
  gap:16px;
  margin:18px 0 0;
}
.page-contact .registry-row{
  display:grid;
  gap:4px;
  min-width:0;
}
.page-contact .registry-key{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--mint);
}
.page-contact .registry-val{
  margin:0;
  font-size:14.5px;
  line-height:1.75;
  color:var(--haze);
  word-break:break-word;
}
.page-contact .registry-code{
  font-family:var(--font-mono);
  font-size:13.5px;
  color:var(--amber);
  letter-spacing:.02em;
}

/* ---------- 交叉索引 ---------- */
.page-contact .contact-next{
  padding:0 0 64px;
  background:var(--ink);
}
.page-contact .cross-grid{
  display:grid;
  gap:12px;
  min-width:0;
}
.page-contact .cross-card{
  display:flex;
  flex-direction:column;
  gap:8px;
  min-width:0;
  padding:16px 16px 18px;
  text-decoration:none;
  background:rgba(14,33,27,.55);
  box-shadow:inset 0 0 0 1px var(--line);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.page-contact .cross-card:hover,
.page-contact .cross-card:focus-visible{
  transform:translateY(-3px);
  box-shadow:inset 0 0 0 1px var(--mint);
}
.page-contact .cross-card h3{
  margin:0;
  font-size:14.5px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--haze);
}
.page-contact .cross-card p{
  margin:0;
  font-size:12.5px;
  line-height:1.7;
  color:var(--muted);
}
.page-contact .cross-arrow{
  margin-top:auto;
  padding-top:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--mint);
}

/* ---------- 响应式 ---------- */
@media (min-width:720px){
  .page-contact .contact-inner{
    padding:0 32px;
  }
  .page-contact .contact-hero{
    padding:28px 0 46px;
  }
  .page-contact .lead{
    font-size:16px;
  }
  .page-contact .channel-cards{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .page-contact .route-row{
    grid-template-columns:48px minmax(0,1fr) 150px;
    align-items:start;
    gap:4px 18px;
  }
  .page-contact .route-tag{
    grid-column:3;
    justify-self:end;
    margin-top:2px;
  }
  .page-contact .registry-list{
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:22px;
  }
  .page-contact .cross-grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
}

@media (min-width:900px){
  .page-contact .channel-layout{
    grid-template-columns:minmax(0,1fr) minmax(0,1.45fr);
    gap:28px;
    align-items:start;
  }
  .page-contact .write-steps{
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:26px;
  }
  .page-contact .write-step:not(:last-child)::after{
    content:"";
    position:absolute;
    top:44px;
    right:-19px;
    width:11px;
    height:11px;
    border-top:2px solid rgba(26,31,28,.42);
    border-right:2px solid rgba(26,31,28,.42);
    transform:rotate(45deg);
  }
  .page-contact .registry-panel{
    padding:34px 32px 36px;
  }
}

@media (min-width:1100px){
  .page-contact .cross-grid{
    grid-template-columns:repeat(4,minmax(0,1fr));
  }
  .page-contact .contact-channels{
    padding:64px 0 68px;
  }
}

@media (prefers-reduced-motion:reduce){
  .page-contact .pulse-dot{
    animation:none;
  }
  .page-contact .channel-card,
  .page-contact .cross-card,
  .page-contact .index-link{
    transition:none;
  }
  .page-contact .channel-card:hover,
  .page-contact .channel-card:focus-within,
  .page-contact .cross-card:hover,
  .page-contact .cross-card:focus-visible{
    transform:none;
  }
}
<<<END>>>