:root{
  --bg:#0f0f0f;--bg2:#161616;--card:#1a1a1a;--card2:#1d1d1d;
  --border:#252525;--border2:#424242;
  --text:#fff;--light3:#b3b3b3;--light2:#7f7f7f;--light1:#5e5e5e;
  --green:#3dbf88;--green2:#54e4a7;--green-dim:rgba(61,191,136,.15);
  --red:#ff494a;--yellow:#ffd641;--radius:6px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,sans-serif;font-size:14px;line-height:1.5;min-height:100vh;display:flex;flex-direction:column;background-image:radial-gradient(60% 50% at 50% -10%,rgba(61,191,136,.14),transparent 70%)}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:none}
input{font:inherit}

/* header */
header{height:74px;display:flex;align-items:center;justify-content:space-between;padding:0 32px;position:relative;z-index:10}
.hl{display:flex;align-items:center}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px}
.bolt{width:30px;height:30px;border-radius:8px;background:linear-gradient(160deg,#48ef8a,#2d796f);display:flex;align-items:center;justify-content:center}
.bolt svg{width:18px;height:18px}
.net{display:flex;align-items:center;gap:6px;margin-left:14px;font-size:13px;color:var(--light3);border:1px solid var(--border);background:var(--card);padding:3px 8px;border-radius:6px}
.net i{width:8px;height:8px;border-radius:50%;background:#30e000;box-shadow:0 0 6px #30e000}
nav{display:flex;align-items:center;gap:24px}
nav a{color:var(--light3);font-weight:500;transition:.15s}
nav a:hover,nav a.active{color:#fff}
.menu-btn{display:none}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-width:116px;height:40px;padding:0 16px;border-radius:var(--radius);font-weight:500;transition:.15s}
.btn-primary{color:#000;border:1px solid #6acaa2;background:linear-gradient(180deg,rgba(255,255,255,.2),rgba(255,255,255,0)),var(--green);box-shadow:0 1px 2px rgba(29,116,90,.4),0 0 0 1.5px rgba(36,255,163,.36)}
.btn-primary:hover:not(:disabled){background:linear-gradient(180deg,rgba(255,255,255,.3),rgba(255,255,255,0)),var(--green2)}
.btn-primary:disabled{color:var(--border2);background:var(--card2);border-color:var(--border);box-shadow:none;cursor:default}
.btn-ghost{color:var(--light3);border:1px solid var(--border);background:var(--card2)}
.btn-ghost:hover{border-color:var(--border2);background:var(--border)}
.btn-block{width:100%}
.btn-row{display:flex;gap:8px}
.btn-row .btn{flex:1}
.icon-btn{width:32px;height:32px;border:1px solid var(--border);border-radius:var(--radius);background:var(--card2);display:flex;align-items:center;justify-content:center;color:var(--light3)}
.icon-btn:hover{border-color:var(--border2);background:var(--border)}

/* layout */
main{flex:1;padding:16px}
.center{display:flex;justify-content:center;padding-top:40px}
.center-text{text-align:center}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 8px 32px rgba(0,0,0,.32)}
.swap-card{width:488px;max-width:100%;padding:16px;display:flex;flex-direction:column;gap:20px}
.card-head{display:flex;align-items:center;justify-content:space-between}
.card-head h2{font-size:20px;font-weight:500}
.muted{color:var(--light2);font-size:12px}

/* amount field */
.fields{display:flex;flex-direction:column;gap:16px;padding:12px 0 4px}
.field{position:relative;display:flex}
.field label{position:absolute;left:8px;top:-10px;z-index:2;padding:0 6px;font-size:12px;color:var(--light2);background:var(--card)}
.amount{flex:1;min-width:0;background:var(--card2);border:1px solid var(--border);border-right:none;border-radius:var(--radius) 0 0 var(--radius);padding:20px 12px 24px;font-size:24px;font-weight:500;color:#fff;outline:none}
.amount::placeholder{color:var(--light2)}
.amount:hover:not(:disabled),.amount:focus{border-color:var(--border2);background:var(--border)}
.usd{position:absolute;left:12px;bottom:8px;font-size:12px;color:var(--light2)}
.asset-btn{width:180px;display:flex;align-items:center;gap:12px;padding:0 12px;background:var(--card2);border:1px solid var(--border);border-radius:0 var(--radius) var(--radius) 0;text-align:left;transition:.15s}
.asset-btn:hover{border-color:var(--border2);background:var(--border)}
.coin{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;color:#fff;flex-shrink:0}
.txt{flex:1;min-width:0}
.sym{font-weight:700}
.chain{font-size:12px;color:var(--light2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.flip-wrap{display:flex;justify-content:center;margin:-8px 0}
.flip{width:36px;height:36px;border:1px solid var(--border);border-radius:var(--radius);background:var(--card2);font-size:18px;transition:.2s}
.flip:hover{border-color:var(--border2);transform:rotate(180deg)}

/* text field */
.stack{display:flex;flex-direction:column;gap:16px}
.tfield{position:relative;background:var(--card2);border:1px solid var(--border);border-radius:var(--radius)}
.tfield:hover,.tfield:focus-within{border-color:var(--border2);background:var(--border)}
.tfield input{width:100%;background:transparent;border:none;outline:none;color:#fff;padding:18px 12px 8px}
.tfield span{position:absolute;left:12px;top:12px;color:var(--light1);pointer-events:none;transition:.15s;transform-origin:left}
.tfield span em{font-style:normal}
.tfield:focus-within span,.tfield input:not(:placeholder-shown)+span{transform:translateY(-9px) scale(.8);color:var(--light3)}

/* quote */
.quote{border:1px solid var(--border);border-radius:var(--radius);background:var(--card2);padding:12px;font-size:13px;display:none;flex-direction:column;gap:6px}
.quote.show{display:flex}
.quote div{display:flex;justify-content:space-between;color:var(--light3)}
.quote b,.row b{color:#fff;font-weight:500}
.quote .g{color:var(--green)}

/* modal */
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);display:none;align-items:center;justify-content:center;z-index:100;padding:16px}
.overlay.show{display:flex}
.modal{width:420px;max-width:100%;padding:20px;display:flex;flex-direction:column;gap:14px}
.modal h3{font-size:18px;font-weight:500}
.asset-list{display:flex;flex-direction:column;gap:4px;max-height:360px;overflow:auto}
.asset-item{display:flex;align-items:center;gap:12px;padding:10px;border-radius:var(--radius);text-align:left;width:100%}
.asset-item:hover{background:var(--border)}
.search{flex:1;width:100%;background:var(--card2);border:1px solid var(--border);border-radius:var(--radius);padding:10px 12px;color:#fff;outline:none}
.search:focus{border-color:var(--border2)}
.row{display:flex;justify-content:space-between;gap:12px;color:var(--light3);font-size:13px}
.row b{max-width:60%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mono{font-family:ui-monospace,Menlo,monospace;font-size:12px}
.deposit-box{background:#000;border:1px dashed var(--border2);border-radius:var(--radius);padding:12px;font-family:ui-monospace,Menlo,monospace;font-size:12px;word-break:break-all;color:var(--green2)}
.warn{background:rgba(255,214,65,.1);border:1px solid rgba(255,214,65,.3);color:var(--yellow);border-radius:var(--radius);padding:10px;font-size:12px}

/* content pages */
.content{max-width:860px;margin:24px auto}
.content h1{font-size:32px;font-weight:600;margin-bottom:8px}
.content .sub{color:var(--light3);font-size:16px;margin-bottom:32px}
.content h2{font-size:20px;font-weight:600;margin:32px 0 12px}
.content h3{font-size:16px;font-weight:600;margin:20px 0 8px}
.content p{color:var(--light3);margin-bottom:12px;line-height:1.7}
.content ul,.content ol{color:var(--light3);padding-left:22px;margin-bottom:12px;line-height:1.8}
.content strong{color:#fff;font-weight:500}
.toc{color:var(--light2);font-size:13px;margin-bottom:24px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:16px 0}
.tile{padding:20px}
.tile .n{width:32px;height:32px;border-radius:8px;background:var(--green-dim);color:var(--green2);display:flex;align-items:center;justify-content:center;font-weight:700;margin-bottom:12px}
.tile h3{margin:0 0 6px;font-size:15px}
.tile p{margin:0;font-size:13px}
.chains{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.chip{border:1px solid var(--border);background:var(--card2);border-radius:999px;padding:6px 12px;font-size:13px;color:var(--light3);display:flex;align-items:center;gap:6px}
.chip i{width:8px;height:8px;border-radius:50%;background:var(--green)}
details{border:1px solid var(--border);background:var(--card);border-radius:var(--radius);margin-bottom:8px}
summary{padding:14px 16px;cursor:pointer;font-weight:500;list-style:none;display:flex;justify-content:space-between}
summary::after{content:"+";color:var(--light2);font-size:18px}
details[open] summary::after{content:"–"}
details p,details ul{padding:0 16px 14px}
.flow{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:16px 0}
.step{flex:1;min-width:150px;padding:14px;text-align:center}
.step b{display:block;margin-bottom:4px;font-weight:500}
.step span{font-size:12px;color:var(--light2)}
.arr{color:var(--green);font-size:18px}

/* orders */
.orders-wrap{max-width:960px;margin:24px auto}
.orders-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.orders-head h1{font-size:24px;font-weight:600}
.search-row{display:flex;gap:8px;flex:1;max-width:460px}
.table-wrap{overflow:auto;margin-bottom:12px}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--border);white-space:nowrap}
th{color:var(--light2);font-weight:500;font-size:12px}
tr:last-child td{border-bottom:none}
.tag{display:inline-flex;align-items:center;gap:6px;padding:3px 8px;border-radius:999px;font-size:12px;border:1px solid}
.tag i{width:6px;height:6px;border-radius:50%;background:currentColor}
.tag.done{color:var(--green2);border-color:rgba(84,228,167,.3);background:var(--green-dim)}
.tag.pending{color:var(--yellow);border-color:rgba(255,214,65,.3);background:rgba(255,214,65,.08)}
.tag.wait{color:var(--light3);border-color:var(--border2);background:var(--card2)}
.empty{text-align:center;color:var(--light2);padding:48px 16px}
.link{color:var(--green2)}
.link:hover{text-decoration:underline}

/* footer */
footer{border-top:1px solid var(--border);background:var(--bg2)}
.foot{max-width:1536px;margin:0 auto;height:74px;display:flex;align-items:center;justify-content:space-between;padding:0 32px}
.foot .l{display:flex;flex-direction:column;line-height:18px}
.foot .l span:first-child{color:var(--light3);font-weight:500}
.foot .l span:last-child{color:var(--light2)}
.foot .r{display:flex;align-items:center;gap:6px;color:var(--light2);font-weight:500}
.foot .r a{color:var(--light3)}
.foot .r a:hover{color:#fff}
.foot .r .dot{font-size:12px}
.foot .r .sep{width:1px;height:14px;background:var(--border);margin:0 8px}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);background:#000;border:1px solid var(--border2);padding:12px 16px;border-radius:8px;font-size:13px;opacity:0;transition:.3s;z-index:200;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%)}

@media (max-width:860px){
  header{padding:0 16px}
  nav{display:none;position:absolute;top:74px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--bg2);border-bottom:1px solid var(--border);padding:8px 0}
  nav.open{display:flex}
  nav a{padding:12px 16px}
  nav .btn{margin:8px 16px}
  .menu-btn{display:flex}
  .asset-btn{width:150px}
  .amount{font-size:20px}
  .foot{height:auto;flex-direction:column;align-items:flex-start;gap:16px;padding:20px 16px}
  .content h1{font-size:26px}
}