.page-contact{
  --pc-hair:rgba(42,33,28,.16);
  --pc-hair-inv:rgba(245,239,227,.18);
  background:var(--paper);
  color:var(--brown);
  font-family:var(--font-sans);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero{
  position:relative;
  background-color:var(--ink);
  background-image:var(--grain-light);
  background-size:6px 6px;
  color:var(--paper);
  padding:clamp(22px,3.4vw,40px) 0 clamp(36px,5vw,72px);
  overflow:hidden;
}
.page-contact .contact-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:var(--scan);
  opacity:.6;
  pointer-events:none;
}
.page-contact .contact-hero > .wrap{
  position:relative;
  z-index:1;
}
.page-contact .contact-hero .breadcrumbs,
.page-contact .contact-hero .breadcrumbs a{
  color:rgba(245,239,227,.68);
}
.page-contact .contact-hero .breadcrumbs a:hover{
  color:var(--lime);
}

.page-contact .hero-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(22px,3.4vw,42px);
  align-items:end;
  margin-top:clamp(24px,3.6vw,44px);
}
.page-contact .hero-title{
  margin:.22em 0 0;
  font-size:clamp(33px,7.4vw,70px);
  line-height:1.05;
  letter-spacing:-.035em;
  font-weight:900;
}
.page-contact .hero-title__mark{
  color:var(--lime);
}
.page-contact .hero-lead{
  max-width:42ch;
  margin:16px 0 0;
  font-size:clamp(14.5px,1.6vw,17px);
  line-height:1.9;
  color:rgba(245,239,227,.82);
}
.page-contact .hero-figure{
  margin:0;
}
.page-contact .hero-facts{
  display:grid;
  grid-template-columns:1fr;
  gap:1px;
  margin-top:clamp(24px,3.4vw,40px);
  background:var(--pc-hair-inv);
  border:1px solid var(--pc-hair-inv);
}
.page-contact .fact{
  background:var(--ink);
  padding:14px 16px 15px;
}
.page-contact .fact__v{
  display:block;
  font-family:var(--font-mono);
  font-size:clamp(23px,3vw,31px);
  line-height:1.1;
  color:var(--lime);
  letter-spacing:-.01em;
}
.page-contact .fact__k{
  display:block;
  margin-top:7px;
  font-size:12.5px;
  line-height:1.6;
  letter-spacing:.03em;
  color:var(--slate);
}

/* ---------- 主体双栏 ---------- */
.page-contact .contact-body{
  padding:clamp(42px,6vw,90px) 0 clamp(44px,6vw,86px);
}
.page-contact .body-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(30px,4.4vw,56px);
}

/* 联系名片 */
.page-contact .id-card{
  position:relative;
  background:var(--paper);
  border:1px solid var(--brown);
  padding:clamp(20px,2.6vw,28px);
  box-shadow:8px 8px 0 rgba(230,58,46,.16);
}
.page-contact .id-card::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:-9px;
  height:8px;
  background-image:repeating-linear-gradient(90deg,var(--red) 0 1px,transparent 1px 12px);
  opacity:.8;
}
.page-contact .id-card__corner{
  position:absolute;
  width:12px;
  height:12px;
  border:2px solid var(--red);
}
.page-contact .id-card__corner--tl{top:-2px;left:-2px;border-right:0;border-bottom:0;}
.page-contact .id-card__corner--tr{top:-2px;right:-2px;border-left:0;border-bottom:0;}
.page-contact .id-card__corner--bl{bottom:-2px;left:-2px;border-right:0;border-top:0;}
.page-contact .id-card__corner--br{bottom:-2px;right:-2px;border-left:0;border-top:0;}

.page-contact .card-title{
  margin:.28em 0 0;
  font-size:clamp(22px,2.4vw,28px);
  font-weight:900;
  letter-spacing:-.02em;
}
.page-contact .id-rows{
  margin-top:16px;
  border-top:1px solid var(--pc-hair);
}
.page-contact .id-row{
  display:grid;
  gap:7px;
  padding:14px 0;
  border-bottom:1px dashed var(--rule);
}
.page-contact .id-row__k{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.16em;
  color:var(--slate);
}
.page-contact .id-row__v{
  font-size:15.5px;
  line-height:1.7;
  word-break:break-word;
}
.page-contact .id-row__v--num{
  font-family:var(--font-mono);
  font-size:20px;
  letter-spacing:.02em;
  color:var(--red);
}
.page-contact .id-row .copy-btn{
  justify-self:start;
  margin-top:2px;
}
.page-contact .copy-status{
  display:block;
  min-height:1.2em;
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--red);
}
.page-contact .id-note{
  margin:12px 0 0;
  padding-left:12px;
  border-left:3px solid var(--lime);
  font-size:13.5px;
  line-height:1.85;
  color:rgba(42,33,28,.74);
}

/* 右栏通用标题 */
.page-contact .block-title{
  margin:.3em 0 0;
  font-size:clamp(24px,3.6vw,40px);
  line-height:1.14;
  letter-spacing:-.03em;
  font-weight:900;
}
.page-contact .block-lead{
  max-width:44ch;
  margin:14px 0 0;
  font-size:15px;
  line-height:1.9;
  color:rgba(42,33,28,.78);
}

/* 合作方向 */
.page-contact .coop-list{
  display:grid;
  gap:12px;
  margin-top:24px;
}
.page-contact .coop-item{
  border:1px solid var(--rule);
  background:#fff;
  padding:0;
}
.page-contact .coop-item[open]{
  border-color:var(--red);
  box-shadow:4px 4px 0 rgba(230,58,46,.12);
}
.page-contact .coop-sum{
  display:flex;
  align-items:center;
  gap:12px;
  padding:16px 18px;
  cursor:pointer;
  list-style:none;
  font-size:clamp(15.5px,1.8vw,18.5px);
  font-weight:800;
  letter-spacing:-.015em;
  line-height:1.45;
}
.page-contact .coop-sum::-webkit-details-marker{display:none;}
.page-contact .coop-sum::after{
  content:"+";
  margin-left:auto;
  flex:none;
  font-family:var(--font-mono);
  font-size:20px;
  line-height:1;
  color:var(--red);
}
.page-contact .coop-item[open] .coop-sum::after{
  content:"–";
}
.page-contact .coop-tag{
  flex:none;
  padding:3px 8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  border:1px solid transparent;
  white-space:nowrap;
}
.page-contact .coop-tag--red{background:var(--red);color:var(--paper);}
.page-contact .coop-tag--lime{background:var(--lime);color:var(--ink);}
.page-contact .coop-tag--ink{background:var(--ink);color:var(--paper);}
.page-contact .coop-tag--coral{background:var(--coral);color:var(--ink);}
.page-contact .coop-body{
  padding:0 18px 18px;
}
.page-contact .coop-body p{
  margin:0 0 10px;
  font-size:14.5px;
  line-height:1.9;
  color:rgba(42,33,28,.8);
}
.page-contact .coop-body p:last-child{margin-bottom:0;}
.page-contact .coop-note{
  margin:20px 0 0;
  font-size:13.5px;
  line-height:1.9;
  color:rgba(42,33,28,.68);
}
.page-contact .coop-note a,
.page-contact .prep-note a,
.page-contact .step__body a{
  color:var(--red);
  text-decoration:underline;
  text-underline-offset:3px;
}
.page-contact .coop-note a:hover,
.page-contact .prep-note a:hover,
.page-contact .step__body a:hover{
  color:var(--ink);
}

/* 合作流程 */
.page-contact .process{
  margin-top:clamp(38px,5vw,64px);
}
.page-contact .process-figure{
  margin:22px 0 6px;
}
.page-contact .steps-line{
  display:block;
  width:100%;
  height:auto;
  margin:6px 0 14px;
}
.page-contact .steps{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:14px;
}
.page-contact .step{
  display:flex;
  gap:14px;
  padding:16px 16px 16px 14px;
  border-left:3px solid var(--red);
  background:rgba(42,33,28,.045);
}
.page-contact .step__num{
  flex:none;
  font-family:var(--font-mono);
  font-size:21px;
  line-height:1.15;
  color:var(--red);
}
.page-contact .step__body h3{
  margin:0 0 6px;
  font-size:16px;
  font-weight:800;
  letter-spacing:-.01em;
}
.page-contact .step__body p{
  margin:0;
  font-size:14.5px;
  line-height:1.85;
  color:rgba(42,33,28,.78);
}

/* ---------- 反馈通道 ---------- */
.page-contact .feedback-block{
  padding:clamp(44px,6vw,88px) 0;
  border-top:1px solid var(--rule);
  background:linear-gradient(180deg,rgba(230,58,46,.06),rgba(245,239,227,0) 62%);
}
.page-contact .channels{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
  margin-top:26px;
}
.page-contact .channel{
  padding:20px 20px 22px;
  background:#fff;
  border:1px solid var(--rule);
}
.page-contact .channel--ink{
  background:var(--ink);
  background-image:var(--grain-light);
  background-size:6px 6px;
  color:var(--paper);
  border-color:var(--ink);
  border-top:4px solid var(--red);
}
.page-contact .channel h3{
  margin:14px 0 0;
  font-size:clamp(17px,2vw,21px);
  line-height:1.35;
  letter-spacing:-.015em;
}
.page-contact .channel p{
  margin:12px 0 18px;
  font-size:14.5px;
  line-height:1.9;
  color:rgba(42,33,28,.78);
}
.page-contact .channel--ink p{
  color:rgba(245,239,227,.82);
}
.page-contact .prep-title{
  margin:clamp(32px,4vw,48px) 0 0;
  font-size:19px;
  font-weight:800;
  letter-spacing:-.015em;
}
.page-contact .prep{
  list-style:none;
  margin:18px 0 0;
  padding:0;
  display:grid;
  gap:10px;
}
.page-contact .prep li{
  position:relative;
  padding-left:20px;
  font-size:14.5px;
  line-height:1.85;
  color:rgba(42,33,28,.82);
}
.page-contact .prep li::before{
  content:"";
  position:absolute;
  left:0;
  top:.66em;
  width:8px;
  height:8px;
  background:var(--red);
}
.page-contact .prep-note{
  margin:20px 0 0;
  font-size:13.5px;
  line-height:1.9;
  color:rgba(42,33,28,.68);
}

/* ---------- 处理节奏 ---------- */
.page-contact .pace{
  background-color:var(--ink);
  background-image:var(--grain-light);
  background-size:6px 6px;
  color:var(--paper);
  padding:clamp(44px,6vw,88px) 0;
}
.page-contact .pace-list{
  display:grid;
  grid-template-columns:1fr;
  gap:1px;
  margin-top:28px;
  background:var(--pc-hair-inv);
  border:1px solid var(--pc-hair-inv);
}
.page-contact .pace-item{
  background:var(--ink);
  padding:22px 20px 24px;
}
.page-contact .pace-num{
  display:block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.2em;
  color:var(--lime);
}
.page-contact .pace-item h3{
  margin:10px 0 8px;
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--paper);
}
.page-contact .pace-item p{
  margin:0;
  font-size:14.5px;
  line-height:1.9;
  color:rgba(245,239,227,.78);
}

/* ---------- 底部反馈色带 ---------- */
.page-contact .cta-band{
  position:relative;
  background-color:var(--red);
  color:var(--paper);
  padding:clamp(40px,5.6vw,78px) 0;
  overflow:hidden;
}
.page-contact .cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    linear-gradient(118deg,rgba(245,239,227,.18),rgba(245,239,227,0) 58%),
    repeating-linear-gradient(180deg,rgba(16,28,44,.09) 0 1px,transparent 1px 6px);
}
.page-contact .cta-grid{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1fr;
  gap:26px;
  align-items:center;
}
.page-contact .eyebrow--on-red{
  color:rgba(245,239,227,.86);
}
.page-contact .cta-title{
  margin:.28em 0 0;
  font-size:clamp(25px,4.2vw,44px);
  line-height:1.14;
  letter-spacing:-.03em;
  font-weight:900;
}
.page-contact .cta-lead{
  margin:14px 0 0;
  max-width:36ch;
  font-size:15px;
  line-height:1.85;
  color:rgba(245,239,227,.88);
}
.page-contact .cta-actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
}
.page-contact .cta-actions .copy-status{
  flex-basis:100%;
  margin-top:0;
  color:var(--ink);
}

/* ---------- 平板 / 桌面 ---------- */
@media (min-width:640px){
  .page-contact .hero-facts{
    grid-template-columns:repeat(3,1fr);
  }
  .page-contact .prep{
    grid-template-columns:repeat(2,1fr);
    gap:12px 22px;
  }
  .page-contact .steps{
    grid-template-columns:repeat(2,1fr);
    gap:16px 20px;
  }
}

@media (min-width:900px){
  .page-contact .hero-grid{
    grid-template-columns:1.08fr .92fr;
  }
  .page-contact .channels{
    grid-template-columns:repeat(2,1fr);
  }
  .page-contact .pace-list{
    grid-template-columns:repeat(3,1fr);
  }
  .page-contact .cta-grid{
    grid-template-columns:1.25fr .75fr;
    gap:34px;
  }
}

@media (min-width:1020px){
  .page-contact .body-grid{
    grid-template-columns:minmax(290px,.72fr) 1.28fr;
    gap:clamp(34px,4.4vw,60px);
  }
  .page-contact .contact-aside{
    align-self:start;
    position:sticky;
    top:26px;
  }
  .page-contact .coop-item:nth-child(even){
    margin-left:clamp(14px,3vw,42px);
  }
  .page-contact .step{
    padding:18px 20px;
  }
}

@media (prefers-reduced-motion:reduce){
  .page-contact *{
    transition:none !important;
    animation:none !important;
  }
}