.page-contact{
  --pc-gap:clamp(20px,3.6vw,40px);
  --pc-radius:clamp(18px,2.4vw,26px);
  padding-bottom:clamp(48px,8vw,96px);
}

.page-contact .hero{
  position:relative;
  overflow:hidden;
  padding:clamp(26px,5vw,60px) 0 clamp(30px,5vw,52px);
}

.page-contact .hero::before{
  content:"";
  position:absolute;
  inset:-12% -20% auto -20%;
  height:130%;
  background-image:radial-gradient(rgba(227,211,180,.13) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:radial-gradient(70% 72% at 28% 0%,#000 0%,transparent 76%);
  mask-image:radial-gradient(70% 72% at 28% 0%,#000 0%,transparent 76%);
  pointer-events:none;
}

.page-contact .hero .shell{position:relative}

.page-contact .hero .display{
  max-width:19ch;
  margin-top:14px;
}

.page-contact .hero .lede{
  margin-top:clamp(14px,2vw,20px);
  max-width:46ch;
}

.page-contact .hero__meta{
  list-style:none;
  margin:clamp(18px,3vw,26px) 0 0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}

.page-contact .section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:12px 24px;
  margin-bottom:clamp(18px,3vw,32px);
}

.page-contact .section__note{
  max-width:34ch;
  font-size:14px;
  line-height:1.7;
  color:var(--stone);
}

.page-contact .desk,
.page-contact .reply,
.page-contact .locate{
  display:grid;
  grid-template-columns:1fr;
  gap:var(--pc-gap);
}

.page-contact .desk>*,
.page-contact .reply>*,
.page-contact .locate>*{
  min-width:0;
}

/* 渠道主卡 */
.page-contact .channel{
  position:relative;
  overflow:hidden;
  padding:clamp(22px,3vw,36px);
  border-radius:var(--pc-radius);
  border:1px solid var(--line-strong);
  background:
    radial-gradient(110% 80% at 100% 0%,rgba(79,227,193,.16),transparent 60%),
    linear-gradient(165deg,var(--moss) 0%,var(--ink-2) 78%);
  box-shadow:var(--shadow-3);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),transform .25s var(--ease);
}

.page-contact .channel::after{
  content:"";
  position:absolute;
  right:-64px;
  bottom:-64px;
  width:186px;
  height:186px;
  border-radius:50%;
  border:1px dashed rgba(227,211,180,.18);
  pointer-events:none;
}

.page-contact .channel:hover{
  border-color:var(--cyan);
  box-shadow:var(--glow),var(--shadow-3);
  transform:translateY(-4px);
}

.page-contact .channel__head{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding-bottom:16px;
  border-bottom:1px dashed var(--line-soft);
}

.page-contact .channel__label{
  margin:0;
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cyan);
}

.page-contact .channel__pill{
  display:inline-block;
  padding:5px 13px;
  border-radius:var(--r-pill);
  border:1px solid rgba(79,227,193,.4);
  background:rgba(79,227,193,.1);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--cyan);
}

.page-contact .channel__row{
  padding:clamp(14px,2vw,20px) 0;
  border-bottom:1px dashed var(--line-soft);
}

.page-contact .channel__key{
  display:block;
  margin-bottom:6px;
  font-size:11px;
  letter-spacing:.2em;
  color:var(--sage);
}

.page-contact .channel__value{
  margin:0;
  font-family:var(--mono);
  font-weight:700;
  font-size:clamp(17px,3.4vw,27px);
  line-height:1.32;
  letter-spacing:-.01em;
  color:var(--warm);
  overflow-wrap:anywhere;
  word-break:break-word;
  -webkit-user-select:all;
  user-select:all;
  cursor:text;
}

.page-contact .channel__value--num{
  font-size:clamp(26px,6vw,42px);
  letter-spacing:.01em;
  color:var(--orange);
  text-shadow:0 0 28px rgba(255,107,44,.3);
}

.page-contact .channel__hint{
  margin:8px 0 0;
  max-width:40ch;
  font-size:14px;
  line-height:1.7;
  color:var(--stone);
}

.page-contact .channel__addr{
  padding:clamp(14px,2vw,20px) 0 0;
}

.page-contact .channel__addrtext{
  margin:0;
  font-size:clamp(15px,2vw,17px);
  font-weight:700;
  letter-spacing:.01em;
  color:var(--sand);
}

.page-contact .channel__foot{
  margin:clamp(16px,2.4vw,22px) 0 0;
  padding-top:14px;
  border-top:1px solid var(--line-soft);
  font-size:12.5px;
  line-height:1.7;
  color:var(--stone);
}

/* 准备清单 */
.page-contact .prep{
  padding:clamp(20px,3vw,32px);
  border-radius:var(--pc-radius);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(20,49,42,.8),rgba(11,36,31,.88));
  box-shadow:var(--shadow-2);
}

.page-contact .prep__title{
  margin:0;
  font-size:clamp(19px,2.4vw,23px);
  font-weight:800;
  letter-spacing:.01em;
  color:var(--warm);
}

.page-contact .prep__lede{
  margin:8px 0 0;
  font-size:14px;
  line-height:1.75;
  color:var(--stone);
}

.page-contact .prep__lede a{
  color:var(--cyan);
  text-decoration:underline;
  text-underline-offset:3px;
}

.page-contact .prep__list{
  margin-top:16px;
  display:grid;
  gap:2px;
}

.page-contact .prep__item{
  position:relative;
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:11px 8px 11px 6px;
  border-radius:10px;
  cursor:pointer;
  transition:background .2s var(--ease);
}

.page-contact .prep__item:hover{
  background:rgba(79,227,193,.07);
}

.page-contact .prep__item input{
  position:absolute;
  width:1px;
  height:1px;
  margin:0;
  opacity:0;
  pointer-events:none;
}

.page-contact .prep__box{
  flex:0 0 auto;
  width:20px;
  height:20px;
  margin-top:1px;
  display:grid;
  place-items:center;
  border:1px solid var(--line-strong);
  border-radius:6px;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}

.page-contact .prep__box::after{
  content:"";
  width:10px;
  height:5px;
  margin-top:-2px;
  border-left:2px solid var(--ink);
  border-bottom:2px solid var(--ink);
  opacity:0;
  transform:rotate(-45deg) scale(.3);
  transition:opacity .18s var(--ease),transform .18s var(--ease);
}

.page-contact .prep__text{
  font-size:14.5px;
  line-height:1.65;
  color:var(--warm);
  transition:color .2s var(--ease);
}

.page-contact .prep__item input:checked+.prep__box{
  background:var(--cyan);
  border-color:var(--cyan);
}

.page-contact .prep__item input:checked+.prep__box::after{
  opacity:1;
  transform:rotate(-45deg) scale(1);
}

.page-contact .prep__item input:checked~.prep__text{
  color:var(--cyan);
}

.page-contact .prep__item input:focus-visible+.prep__box{
  outline:2px solid var(--cyan);
  outline-offset:3px;
}

.page-contact .prep__ready{
  margin:16px 0 0;
  padding:10px 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(79,227,193,.35);
  background:rgba(79,227,193,.08);
  font-size:13px;
  line-height:1.6;
  color:var(--cyan);
  opacity:0;
  transform:translateY(-4px);
  transition:opacity .25s var(--ease),transform .25s var(--ease);
}

.page-contact .prep:has(input:checked) .prep__ready{
  opacity:1;
  transform:none;
}

/* 回复节奏 */
.page-contact .steps{
  list-style:none;
  margin:0;
  padding:0;
  position:relative;
}

.page-contact .steps::before{
  content:"";
  position:absolute;
  left:15px;
  top:28px;
  bottom:28px;
  border-left:1px dashed rgba(227,211,180,.28);
}

.page-contact .step{
  position:relative;
  padding:10px 0 22px 48px;
}

.page-contact .step:last-child{
  padding-bottom:0;
}

.page-contact .step__index{
  position:absolute;
  left:0;
  top:10px;
  width:31px;
  height:31px;
  display:grid;
  place-items:center;
  border-radius:50%;
  border:1px solid rgba(79,227,193,.45);
  background:var(--ink-2);
  font-family:var(--mono);
  font-size:11.5px;
  font-weight:700;
  color:var(--cyan);
  box-shadow:0 0 18px -6px rgba(79,227,193,.7);
}

.page-contact .step__title{
  margin:0;
  font-size:16px;
  font-weight:800;
  letter-spacing:.01em;
  color:var(--warm);
}

.page-contact .step__text{
  margin:6px 0 0;
  max-width:44ch;
  font-size:14.5px;
  line-height:1.78;
  color:var(--stone);
}

.page-contact .step__text a{
  color:var(--cyan);
  text-decoration:underline;
  text-underline-offset:3px;
}

.page-contact .reply__media{
  border-radius:var(--pc-radius);
  overflow:hidden;
}

.page-contact .reply__media img{
  display:block;
  width:100%;
  height:auto;
  max-width:100%;
  object-fit:cover;
}

/* 纠错 / 选题 / 合作 */
.page-contact .lanes{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}

.page-contact .lane{
  position:relative;
  padding:clamp(20px,2.6vw,28px);
  border-radius:var(--pc-radius);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(27,63,53,.58),rgba(8,28,24,.55));
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}

.page-contact .lane:hover{
  border-color:rgba(79,227,193,.5);
  transform:translateY(-4px);
}

.page-contact .lane__no{
  margin:0;
  font-family:var(--mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--clay);
}

.page-contact .lane__title{
  margin:10px 0 0;
  font-size:18px;
  font-weight:800;
  letter-spacing:.01em;
  color:var(--warm);
}

.page-contact .lane__text{
  margin:9px 0 0;
  font-size:14.5px;
  line-height:1.78;
  color:var(--stone);
}

.page-contact .lane__meta{
  margin:16px 0 0;
  padding-top:12px;
  border-top:1px dashed var(--line-soft);
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.02em;
  color:var(--sage);
}

/* 位置 */
.page-contact .locate__text .prose{
  max-width:36em;
}

.page-contact .locate__text .display{
  margin:14px 0 16px;
}

.page-contact .locate__note{
  margin:16px 0 0;
  font-size:14px;
  line-height:1.8;
  color:var(--stone);
}

.page-contact .locate__note a{
  color:var(--cyan);
  text-decoration:underline;
  text-underline-offset:3px;
}

.page-contact .closing{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:clamp(20px,3vw,28px);
}

.page-contact .locate__map{
  position:relative;
  border-radius:var(--pc-radius);
  overflow:hidden;
}

.page-contact .locate__map img{
  display:block;
  width:100%;
  height:auto;
  max-width:100%;
  object-fit:cover;
}

.page-contact .locate__pin{
  position:absolute;
  left:46%;
  top:50%;
  width:13px;
  height:13px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 7px rgba(79,227,193,.16),0 0 26px rgba(79,227,193,.8);
  pointer-events:none;
}

@media (min-width:760px){
  .page-contact .lanes{
    grid-template-columns:repeat(3,1fr);
  }
}

@media (min-width:900px){
  .page-contact .reply{
    grid-template-columns:1.05fr .95fr;
    align-items:center;
  }

  .page-contact .locate{
    grid-template-columns:.82fr 1.18fr;
    align-items:center;
  }
}

@media (min-width:940px){
  .page-contact .desk{
    grid-template-columns:1.08fr .92fr;
    align-items:start;
  }
}
</main>