.page-contact{
  --cs-pad:20px;
  --cs-org-tint:rgba(108,76,241,.2);
  color:var(--text);
  padding-bottom:72px;
  overflow-x:clip;
}

.page-contact > section{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--cs-pad);
}

.page-contact > section + section{
  margin-top:56px;
}

.page-contact h2{
  margin:0 0 10px;
  font-size:clamp(22px,3.6vw,30px);
  line-height:1.28;
  letter-spacing:-.02em;
  font-weight:800;
}

.page-contact h3{
  margin:0;
  letter-spacing:-.01em;
}

.page-contact p{
  margin:0;
}

/* ---------- 首屏 ---------- */
.cs-hero{
  display:grid;
  gap:14px;
  padding-top:40px;
  padding-bottom:8px;
  max-width:820px;
}

.cs-crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-2);
}

.cs-crumb a{
  color:var(--text-2);
  text-decoration:none;
  transition:color .2s var(--ease);
}

.cs-crumb a:hover{
  color:var(--cyan);
}

.cs-crumb [aria-current]{
  color:var(--text);
}

.cs-eyebrow{
  font-size:12px;
  letter-spacing:.06em;
  color:var(--cyan);
}

.cs-hero h1{
  margin:0;
  font-size:clamp(28px,6.6vw,50px);
  line-height:1.14;
  letter-spacing:-.03em;
  font-weight:800;
}

.cs-lede{
  font-size:16px;
  line-height:1.78;
  max-width:62ch;
}

.cs-note{
  max-width:62ch;
  padding-left:14px;
  border-left:2px solid var(--brand);
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
}

.cs-jump{
  font-size:14px;
  color:var(--text-2);
}

.cs-jump a{
  color:var(--cyan);
  text-decoration:none;
  border-bottom:1px solid rgba(34,211,238,.35);
}

.cs-jump a:hover{
  border-bottom-color:var(--cyan);
}

/* ---------- 通用小节头 ---------- */
.cs-sec-head{
  margin-bottom:22px;
}

.cs-sec-kicker{
  margin:0 0 8px;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--cyan);
}

.cs-sec-kicker--violet{
  color:var(--violet);
}

.cs-sec-desc{
  max-width:58ch;
  font-size:14.5px;
  line-height:1.72;
  color:var(--text-2);
}

/* ---------- 渠道清单 ---------- */
.cs-channel-list{
  list-style:none;
  margin:0;
  padding:0;
  border-top:1px solid var(--hair);
}

.cs-channel{
  display:grid;
  gap:8px;
  padding:20px 14px;
  border-bottom:1px solid var(--hair);
  border-left:2px solid transparent;
  transition:background-color .24s var(--ease), border-left-color .24s var(--ease);
}

.cs-channel:hover,
.cs-channel:focus-within{
  background:var(--slate);
  border-left-color:var(--cyan);
}

.cs-channel__kind{
  font-size:12px;
  letter-spacing:.1em;
  color:var(--text-2);
}

.cs-channel__value{
  font-size:clamp(15px,2.6vw,18px);
  line-height:1.5;
  color:var(--text);
  overflow-wrap:anywhere;
}

.cs-channel__use{
  font-size:14px;
  line-height:1.72;
  color:var(--text-2);
  transition:color .24s var(--ease);
}

.cs-channel:hover .cs-channel__use{
  color:var(--text);
}

/* ---------- 安全边界 ---------- */
.cs-security__grid{
  display:grid;
  gap:24px;
}

.cs-security__intro{
  font-size:15px;
  line-height:1.78;
  color:var(--text-2);
  max-width:60ch;
}

.cs-forbid{
  list-style:none;
  margin:18px 0 0;
  padding:0;
  display:grid;
  gap:12px;
}

.cs-forbid li{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:10px;
  align-items:start;
  font-size:14.5px;
  line-height:1.72;
  color:var(--text-2);
}

.cs-forbid li::before{
  content:"";
  width:6px;
  height:6px;
  margin-top:.66em;
  border-radius:1px;
  background:var(--amber);
}

.cs-warn{
  margin-top:22px;
  padding:14px 16px;
  border:1px solid rgba(255,138,61,.42);
  border-radius:var(--r-md);
  background:rgba(255,138,61,.07);
  font-size:14px;
  line-height:1.76;
  color:var(--text);
}

.cs-security__fig{
  margin:0;
}

/* ---------- 机构入口 ---------- */
.cs-org__panel{
  position:relative;
  padding:26px 20px 30px;
  border:1px solid rgba(108,76,241,.34);
  border-radius:var(--r-lg);
  background:
    radial-gradient(120% 90% at 0% 0%, var(--cs-org-tint), transparent 58%),
    var(--slate);
  overflow:hidden;
}

.cs-org__panel::before{
  content:"";
  position:absolute;
  inset:0 auto auto 0;
  width:100%;
  height:2px;
  background:linear-gradient(90deg, var(--violet), var(--brand) 52%, transparent);
}

.cs-org__intro{
  font-size:15px;
  line-height:1.78;
  color:var(--text-2);
  max-width:66ch;
}

.cs-filter{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:22px 0 18px;
}

.cs-filter__radio{
  position:absolute;
  width:1px;
  height:1px;
  opacity:0;
  pointer-events:none;
}

.cs-filter__label{
  display:inline-block;
  padding:7px 13px;
  border:1px solid var(--hair);
  border-radius:var(--r-pill);
  font-family:var(--mono);
  font-size:12.5px;
  line-height:1.4;
  color:var(--text-2);
  cursor:pointer;
  transition:color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.cs-filter__label:hover{
  color:var(--text);
  border-color:rgba(108,76,241,.6);
}

.cs-filter__radio:checked + .cs-filter__label{
  color:var(--text);
  border-color:var(--violet);
  background:rgba(108,76,241,.22);
}

.cs-filter__radio:focus-visible + .cs-filter__label{
  outline:2px solid var(--cyan);
  outline-offset:2px;
}

.cs-scenes{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:12px;
}

.cs-scene{
  display:grid;
  gap:9px;
  align-content:start;
  padding:16px;
  border:1px solid var(--hair);
  border-radius:var(--r-md);
  background:rgba(6,9,15,.5);
}

.cs-scene__name{
  font-size:16px;
  font-weight:700;
}

.cs-scene__name::before{
  content:"";
  display:block;
  width:22px;
  height:2px;
  margin-bottom:10px;
  background:var(--violet);
}

.cs-scene__desc{
  font-size:13.5px;
  line-height:1.72;
  color:var(--text-2);
}

.cs-scene__link{
  justify-self:start;
  font-family:var(--mono);
  font-size:12.5px;
  color:var(--cyan);
  text-decoration:none;
  border-bottom:1px solid rgba(34,211,238,.35);
}

.cs-scene__link:hover{
  border-bottom-color:var(--cyan);
}

.page-contact:has(#cs-scene-pay:checked) .cs-scene:not([data-scene="pay"]),
.page-contact:has(#cs-scene-trace:checked) .cs-scene:not([data-scene="trace"]),
.page-contact:has(#cs-scene-donate:checked) .cs-scene:not([data-scene="donate"]),
.page-contact:has(#cs-scene-nft:checked) .cs-scene:not([data-scene="nft"]),
.page-contact:has(#cs-scene-proof:checked) .cs-scene:not([data-scene="proof"]),
.page-contact:has(#cs-scene-trade:checked) .cs-scene:not([data-scene="trade"]){
  display:none;
}

.cs-org__sub{
  margin-top:30px;
  font-size:16px;
  font-weight:700;
}

.cs-org__hint{
  margin-top:8px;
  font-size:13.5px;
  line-height:1.7;
  color:var(--text-2);
}

.cs-need{
  margin-top:10px;
  list-style:none;
  padding:0;
}

.cs-need .checklist__item{
  border-bottom:1px solid var(--hair-soft);
}

.cs-need .checklist__item:first-child{
  border-top:1px solid var(--hair-soft);
}

.cs-check{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:12px;
  align-items:start;
  width:100%;
  padding:12px 2px;
  border:0;
  background:none;
  font:inherit;
  text-align:left;
  color:var(--text-2);
  cursor:pointer;
  transition:color .2s var(--ease);
}

.cs-check:hover{
  color:var(--text);
}

.cs-check__mark{
  position:relative;
  width:16px;
  height:16px;
  margin-top:3px;
  border:1px solid var(--hair);
  border-radius:var(--r-xs);
  background:rgba(6,9,15,.6);
  transition:border-color .2s var(--ease), background-color .2s var(--ease);
}

.cs-check[aria-checked="true"] .cs-check__mark{
  border-color:var(--mint);
  background:rgba(63,214,164,.18);
}

.cs-check[aria-checked="true"] .cs-check__mark::after{
  content:"";
  position:absolute;
  left:4px;
  top:1px;
  width:5px;
  height:9px;
  border-right:2px solid var(--mint);
  border-bottom:2px solid var(--mint);
  transform:rotate(42deg);
}

.cs-check[aria-checked="true"] .checklist__text{
  color:var(--text);
}

.cs-check:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
  border-radius:var(--r-xs);
}

/* ---------- 服务范围 ---------- */
.cs-region__grid{
  display:grid;
  gap:24px;
}

.cs-region__text{
  font-size:15px;
  line-height:1.78;
  color:var(--text-2);
  max-width:58ch;
}

.cs-facts{
  margin:20px 0 0;
  padding:0;
  display:grid;
}

.cs-facts > div{
  display:grid;
  grid-template-columns:minmax(84px,auto) minmax(0,1fr);
  gap:16px;
  align-items:baseline;
  padding:12px 0;
  border-bottom:1px solid var(--hair);
}

.cs-facts > div:first-child{
  border-top:1px solid var(--hair);
}

.cs-facts dt{
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--text-2);
}

.cs-facts dd{
  margin:0;
  font-size:14.5px;
  line-height:1.6;
  color:var(--text);
  overflow-wrap:anywhere;
}

.cs-region__note{
  margin-top:16px;
  font-size:13.5px;
  line-height:1.72;
  color:var(--text-2);
}

.cs-region__fig{
  margin:0;
}

/* ---------- 转介路径 ---------- */
.cs-route-list{
  list-style:none;
  margin:0;
  padding:0;
  border-top:1px solid var(--hair);
}

.cs-route{
  border-bottom:1px solid var(--hair);
}

.cs-route a{
  display:grid;
  gap:6px;
  padding:16px 12px;
  text-decoration:none;
  color:var(--text);
  transition:background-color .24s var(--ease);
}

.cs-route a:hover,
.cs-route a:focus-visible{
  background:rgba(13,21,34,.78);
}

.cs-route__q{
  font-size:15px;
  line-height:1.64;
  transition:color .24s var(--ease);
}

.cs-route a:hover .cs-route__q{
  color:var(--cyan);
}

.cs-route__to{
  font-size:13px;
  color:var(--cyan);
  white-space:nowrap;
}

/* ---------- 响应式 ---------- */
@media (min-width:700px){
  .page-contact > section{
    padding-inline:28px;
  }

  .cs-scenes{
    grid-template-columns:repeat(2, minmax(0,1fr));
  }

  .cs-route a{
    grid-template-columns:minmax(0,1fr) auto;
    align-items:center;
    gap:28px;
  }

  .cs-route__to{
    justify-self:end;
  }
}

@media (min-width:900px){
  .page-contact{
    --cs-pad:32px;
  }

  .page-contact > section + section{
    margin-top:80px;
  }

  .cs-hero{
    padding-top:56px;
  }

  .cs-channel{
    grid-template-columns:96px minmax(0,1fr) minmax(0,1.15fr);
    align-items:baseline;
    gap:24px;
    padding:24px 16px;
  }

  .cs-security__grid{
    grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
    gap:40px;
    align-items:start;
  }

  .cs-org__panel{
    padding:38px 34px 42px;
  }

  .cs-region__grid{
    grid-template-columns:minmax(0,1fr) minmax(0,.82fr);
    gap:44px;
    align-items:center;
  }
}

@media (min-width:1080px){
  .cs-scenes{
    grid-template-columns:repeat(3, minmax(0,1fr));
  }
}