:root{
  --bg:#0b0d10;--surface:#13161b;--elev:#1a1e25;--border:#272c35;--border-strong:#39404c;
  --text:#e8eaed;--muted:#9aa2ae;--dim:#6b7280;
  --accent:#34d399;--accent-dim:rgba(52,211,153,.14);--accent-text:#052e1f;
  --danger:#f87171;--danger-dim:rgba(248,113,113,.14);--warn:#fbbf24;--warn-dim:rgba(251,191,36,.14);
  --radius:14px;--radius-sm:8px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:15px/1.6 var(--font)}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
img{display:block;max-width:100%}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .5em}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.narrow{max-width:820px}
.mono{font-family:var(--mono);font-size:.93em}
.wrap{word-break:break-all}
.small{font-size:12.5px}
.muted{color:var(--muted)}
.center{text-align:center}
.center-page{text-align:center;padding-top:72px;padding-bottom:96px}
.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--dim);margin:0 0 8px}
.offscreen{position:fixed;left:-9999px;top:0;opacity:0}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(11,13,16,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--text)}
.brand b{color:var(--accent)}.brand:hover{text-decoration:none}
.nav-desktop{display:flex;gap:2px}
.nav-desktop a{padding:8px 12px;border-radius:var(--radius-sm);color:var(--muted);font-weight:500}
.nav-desktop a:hover,.nav-desktop a.active{color:var(--text);background:var(--elev);text-decoration:none}
.header-right{margin-left:auto;display:flex;align-items:center;gap:8px}
.privacy-pill{font-size:12px;color:var(--accent);background:var(--accent-dim);padding:4px 10px;border-radius:999px;font-weight:600}
.lang-switch{border:1px solid var(--border);padding:6px 10px;border-radius:var(--radius-sm);color:var(--muted);font-size:13px;font-weight:600}
.lang-switch:hover{color:var(--text);text-decoration:none;border-color:var(--border-strong)}
.nav-mobile{display:none;position:relative}
.nav-mobile summary{list-style:none;width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--muted)}
.nav-mobile summary::-webkit-details-marker{display:none}
.nav-mobile nav{position:absolute;right:0;top:48px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);min-width:200px;padding:8px;display:flex;flex-direction:column;box-shadow:0 12px 40px rgba(0,0,0,.5)}
.nav-mobile nav a{padding:10px 12px;color:var(--text);border-radius:var(--radius-sm)}
.nav-mobile nav a:hover{background:var(--elev);text-decoration:none}

/* ---------- hero ---------- */
.hero{padding:56px 0 28px;text-align:center}
.hero h1{font-size:clamp(28px,4.5vw,44px);font-weight:700;letter-spacing:-.02em}
.hero-sub{color:var(--muted);font-size:17px;max-width:640px;margin:0 auto}

/* ---------- swap layout ---------- */
.swap-grid{display:grid;grid-template-columns:minmax(0,440px) minmax(0,1fr);gap:24px;align-items:start;padding-bottom:56px}
.widget{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.widget-head{display:flex;align-items:center;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.mode-badge{display:inline-flex;align-items:center;gap:6px;color:var(--accent);background:var(--accent-dim);padding:5px 10px;border-radius:999px;font-size:12.5px;font-weight:600}
.mode-tip{font-size:12px;color:var(--dim)}
.field{background:var(--elev);border:1px solid var(--border);border-radius:12px;padding:12px 12px}
.field:focus-within{border-color:var(--border-strong)}
.field-label{display:block;font-size:12px;color:var(--dim);margin-bottom:6px}
.field-row{display:flex;align-items:center;gap:10px}
.amount-col{flex:1;min-width:0;display:flex;flex-direction:column}
.amount-input{background:none;border:0;outline:0;width:100%;font-size:26px;font-weight:600;padding:0;color:var(--text)}
.amount-input::placeholder{color:var(--dim)}
.receive{font-size:26px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.receive.loading{color:var(--dim)}
.usd{font-size:12.5px;color:var(--dim)}
.token-btn{display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:6px 10px 6px 6px;flex-shrink:0}
.token-btn:hover{border-color:var(--border-strong)}
.token-btn .tk{display:flex;flex-direction:column;align-items:flex-start;line-height:1.15}
.token-btn .tk b{font-size:15px}.token-btn .tk small{font-size:11px;color:var(--dim)}
.token-btn .chev{color:var(--dim);font-size:11px}
.coin{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font-size:10px;font-weight:700;color:#fff;flex-shrink:0;letter-spacing:.02em}
/*.coin[data-chain="BTC"]{background:#f7931a}.coin[data-chain="ETH"]{background:#627eea}.coin[data-chain="SOL"]{background:#9945ff}*/
/*.coin[data-chain="NEAR"]{background:#111;border:1px solid #3a3a3a}.coin[data-chain="ARB"]{background:#2d374b}.coin[data-chain="BASE"]{background:#0052ff}*/
/*.coin[data-chain="BSC"]{background:#f0b90b;color:#111}.coin[data-chain="AVAX"]{background:#e84142}.coin[data-chain="LTC"]{background:#bfbbbb;color:#111}*/
/*.coin[data-chain="DOGE"]{background:#c2a633;color:#111}.coin[data-chain="TRX"]{background:#eb0029}.coin[data-chain="XRP"]{background:#23292f}*/
/*.coin[data-chain="DOT"]{background:#e6007a}.coin[data-chain="THOR"]{background:#33ff99;color:#111}*/
.flip-wrap{display:flex;justify-content:center;margin:-8px 0}
.flip{width:34px;height:34px;border-radius:50%;background:var(--surface);border:1px solid var(--border);color:var(--muted);display:grid;place-items:center;position:relative;z-index:1}
.flip:hover{color:var(--accent);border-color:var(--accent)}
.rate-line{font-size:12.5px;color:var(--dim);margin:8px 2px 4px;min-height:1.2em}
.addr-field{display:block;margin-top:10px}
.addr-label{display:block;font-size:12px;color:var(--dim);margin-bottom:4px}
.addr-input{width:100%;background:var(--elev);border:1px solid var(--border);border-radius:10px;padding:11px 12px;font-family:var(--mono);font-size:13px;outline:0}
.addr-input:focus{border-color:var(--accent)}
.addr-input.invalid{border-color:var(--danger)}
.addr-help{display:block;font-size:11.5px;color:var(--dim);margin-top:4px}
.btn-primary{display:block;width:100%;margin-top:16px;padding:14px;border:0;border-radius:12px;background:var(--accent);color:var(--accent-text);font-weight:700;font-size:15px}
.btn-primary:hover{filter:brightness(1.07);text-decoration:none}
.btn-primary:disabled{background:var(--elev);color:var(--dim);cursor:not-allowed}
.btn-primary.inline{display:inline-block;width:auto;padding:12px 22px}
.btn-ghost{display:inline-block;padding:10px 18px;border:1px solid var(--border);border-radius:10px;color:var(--text);font-weight:600}
.btn-ghost:hover{border-color:var(--accent);text-decoration:none}
.hint{font-size:12.5px;color:var(--dim);text-align:center;margin:10px 0 0}
.hint.warn{color:var(--warn);background:var(--warn-dim);padding:8px 12px;border-radius:8px}
.hint.err{color:var(--danger)}

/* ---------- routes ---------- */
.routes{min-width:0}
.routes-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px}
.routes-title{font-size:15px;margin:0;display:flex;align-items:center;gap:8px}
.count{font-size:11px;background:var(--elev);color:var(--muted);padding:2px 8px;border-radius:999px}
.sort-toggle{display:flex;background:var(--elev);border:1px solid var(--border);border-radius:9px;padding:3px}
.sort-toggle button{background:none;border:0;padding:5px 12px;border-radius:7px;color:var(--muted);font-size:13px;font-weight:500}
.sort-toggle button.active{background:var(--surface);color:var(--text)}
.routes-refresh{font-size:12px;color:var(--dim);margin:0 0 10px;min-height:1.2em}
.routes-list{display:flex;flex-direction:column;gap:8px}
.routes-empty{color:var(--dim);padding:40px 0;text-align:center;border:1px dashed var(--border);border-radius:var(--radius);margin:0}
.route{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;animation:fade .25s ease both}
.route.is-selected{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent) inset}
@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
.route-main{display:block;width:100%;text-align:left;background:none;border:0;padding:14px 16px}
.route-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.route-name{font-weight:600;font-size:14px}
.badge{font-size:10.5px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;padding:2px 7px;border-radius:999px;background:var(--elev);color:var(--muted)}
.badge.optimal{background:var(--accent-dim);color:var(--accent)}
.badge.fastest{background:rgba(96,165,250,.15);color:#93c5fd}
.badge.cheapest{background:var(--warn-dim);color:var(--warn)}
.badge.rec{background:rgba(167,139,250,.15);color:#c4b5fd}
.route-mid{display:flex;align-items:baseline;gap:10px;margin:6px 0 4px}
.route-amt{font-size:20px;font-weight:600;font-family:var(--mono)}
.route-usd{color:var(--muted);font-size:13px}
.check{margin-left:auto;color:var(--accent);font-size:18px}
.route-meta{display:flex;gap:14px;flex-wrap:wrap;font-size:12.5px;color:var(--muted)}
.route-meta .dev{color:var(--danger)}
.route-meta .dev.zero{color:var(--accent)}
.route-toggle{width:100%;background:var(--elev);border:0;border-top:1px solid var(--border);padding:8px;font-size:12.5px;color:var(--muted)}
.route-toggle:hover{color:var(--text)}
.route-details{padding:14px 16px;border-top:1px solid var(--border);font-size:13px}
.route-details h4{font-size:12px;color:var(--dim);text-transform:uppercase;letter-spacing:.06em;margin:12px 0 6px}
.route-details h4:first-child{margin-top:0}
.path{display:flex;align-items:center;flex-wrap:wrap;gap:6px}
.hop{background:var(--elev);border:1px solid var(--border);border-radius:8px;padding:4px 9px;font-family:var(--mono);font-size:12px}
.hop small{color:var(--dim);margin-left:4px;font-family:var(--font)}
.arrow{color:var(--dim)}
.fee-table{width:100%;border-collapse:collapse}
.fee-table td{padding:5px 0;border-bottom:1px solid var(--border);vertical-align:top}
.fee-table td:nth-child(2){font-family:var(--mono);color:var(--muted);text-align:right;padding-right:12px}
.fee-table td:last-child{text-align:right;white-space:nowrap}
.fee-table tr.total td{border:0;font-weight:700}
.kv-inline{display:grid;grid-template-columns:auto 1fr;gap:4px 14px}
.kv-inline dt{color:var(--dim)}.kv-inline dd{margin:0}
.note{margin-top:10px;padding:8px 10px;border-radius:8px;background:var(--warn-dim);color:var(--warn);font-size:12.5px}
.note.info{background:var(--elev);color:var(--muted)}

/* ---------- token modal ---------- */
.modal{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.65);display:flex;align-items:flex-start;justify-content:center;padding:8vh 16px}
.modal[hidden]{display:none}
.modal-box{width:100%;max-width:440px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;max-height:80vh;display:flex;flex-direction:column}
.modal-head{display:flex;gap:8px;padding:12px;border-bottom:1px solid var(--border)}
.search-input{flex:1;background:var(--elev);border:1px solid var(--border);border-radius:10px;padding:10px 12px;outline:0}
.search-input:focus{border-color:var(--accent)}
.modal-close{background:var(--elev);border:1px solid var(--border);border-radius:10px;width:42px;color:var(--muted)}
.token-list{list-style:none;margin:0;padding:8px;overflow-y:auto}
.token-list li button{display:flex;align-items:center;gap:10px;width:100%;background:none;border:0;padding:10px;border-radius:10px;text-align:left}
.token-list li button:hover,.token-list li button.sel{background:var(--elev)}
.token-list .tk{flex:1;display:flex;flex-direction:column;line-height:1.2}
.token-list .tk b{font-size:14px}.token-list .tk small{color:var(--dim);font-size:12px}
.token-list .net{font-size:11px;color:var(--muted);background:var(--elev);border:1px solid var(--border);padding:2px 8px;border-radius:999px}
.token-empty{color:var(--dim);text-align:center;padding:24px}

/* ---------- sections ---------- */
.providers{padding:36px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);text-align:center}
.providers-list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;justify-content:center;gap:12px 36px;color:var(--muted);font-weight:600;font-size:17px;letter-spacing:.01em}
.section{padding:64px 20px}
.section-title{font-size:clamp(22px,3vw,30px);margin-bottom:28px}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;counter-reset:s}
.step{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.step-num{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--accent-dim);color:var(--accent);font-weight:700;font-size:13px;margin-bottom:10px}
.step h3{font-size:15px}.step p{margin:0;color:var(--muted);font-size:14px}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-bottom:28px}
.feature{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px}
.feature h3{font-size:16px}.feature p{margin:0;color:var(--muted);font-size:14px}

/* ---------- content pages ---------- */
.page{padding-top:40px;padding-bottom:80px}
.page h1{font-size:clamp(26px,4vw,36px)}
.page h2{font-size:20px;margin-top:32px}
.page h3{font-size:16px}
.page p,.page li{color:#cfd3d9}
.lead{font-size:17px;color:var(--muted)}
.accordion{display:flex;flex-direction:column;gap:6px}
.acc-item{background:var(--surface);border:1px solid var(--border);border-radius:12px}
.acc-item summary{cursor:pointer;padding:14px 16px;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:12px}
.acc-item summary::-webkit-details-marker{display:none}
.acc-item summary::after{content:"+";color:var(--dim);font-weight:400}
.acc-item[open] summary::after{content:"−"}
.acc-body{padding:0 16px 14px}.acc-body p{margin:0 0 8px;color:var(--muted)}
.faq-group{margin-top:36px}
.support-box{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:24px 0}
.support-box>div{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.track-form{display:flex;gap:8px;margin:20px 0 8px}
.track-form .addr-input{flex:1}
.track-form .btn-primary{width:auto;margin:0;padding:0 22px}

/* ---------- order ---------- */
.order-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:12px}
.order-id{font-family:var(--mono);font-size:24px;margin:0;display:flex;align-items:center;gap:10px}
.copy-btn{font-size:11px;background:var(--elev);border:1px solid var(--border);border-radius:6px;padding:3px 8px;color:var(--muted);vertical-align:middle;font-family:var(--font)}
.copy-btn.ok{color:var(--accent);border-color:var(--accent)}
.status-badge{padding:6px 14px;border-radius:999px;font-weight:700;font-size:13px;background:var(--elev);color:var(--muted)}
.status-badge.st-waiting{background:var(--warn-dim);color:var(--warn)}
.status-badge.st-confirming,.status-badge.st-swapping,.status-badge.st-sending{background:rgba(96,165,250,.15);color:#93c5fd}
.status-badge.st-completed{background:var(--accent-dim);color:var(--accent)}
.status-badge.st-expired,.status-badge.st-failed{background:var(--danger-dim);color:var(--danger)}
.timeline{list-style:none;margin:20px 0 24px;padding:0;display:flex;gap:4px}
.timeline li{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;font-size:12px;color:var(--dim);position:relative;text-align:center}
.timeline li::before{content:"";position:absolute;top:7px;left:-50%;width:100%;height:2px;background:var(--border);z-index:0}
.timeline li:first-child::before{display:none}
.timeline .dot{width:16px;height:16px;border-radius:50%;background:var(--border);z-index:1}
.timeline li.done{color:var(--muted)}.timeline li.done .dot,.timeline li.done::before{background:var(--accent)}
.timeline li.active{color:var(--text);font-weight:600}.timeline li.active .dot{background:var(--accent);box-shadow:0 0 0 4px var(--accent-dim)}
.timeline li.active::before{background:var(--accent)}
.order-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
.order-grid:not(:has(> .card:not([hidden]) ~ .card:not([hidden]))) > .card:not([hidden]) {  grid-column: 1 / -1;  justify-self: center;}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.card h2{font-size:17px;margin-top:0}
.kv{margin:12px 0}.kv>span{display:block;font-size:12px;color:var(--dim)}.kv strong{display:block;font-weight:600}
.kv .big{font-size:20px}
.tx-form{margin-top:18px;padding-top:16px;border-top:1px solid var(--border)}
.tx-form label{font-size:13px;color:var(--muted)}
.details{display:grid;grid-template-columns:auto 1fr;gap:8px 16px;margin:0}
.details dt{color:var(--dim);font-size:13px}.details dd{margin:0;min-width:0}
.fee-list{list-style:none;margin:0;padding:0}
.fee-list li{display:grid;grid-template-columns:1fr auto auto;gap:10px;font-size:13px;padding:3px 0;border-bottom:1px solid var(--border)}
.fee-list li.total{border:0;font-weight:700}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--border);padding:48px 0 28px;margin-top:40px;background:var(--surface)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{color:var(--muted);font-size:14px;max-width:320px}
.site-footer h4{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--dim)}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:6px 0}.site-footer li a{color:var(--muted)}.site-footer li a:hover{color:var(--text)}
.copyright{margin:36px 0 0;color:var(--dim);font-size:13px}

/* ---------- responsive ---------- */
@media(max-width:960px){
  .swap-grid,.order-grid,.footer-grid,.support-box{grid-template-columns:1fr}
  .footer-grid{gap:20px}
}
@media(max-width:860px){.nav-desktop{display:none}.nav-mobile{display:block}.privacy-pill{display:none}}
@media(max-width:600px){
  .hero{padding:36px 0 20px}
  .amount-input,.receive{font-size:22px}
  .routes-head{flex-direction:column;align-items:flex-start}
  .timeline li span:last-child{font-size:10.5px}
  .details{grid-template-columns:1fr}
  .track-form{flex-direction:column}
  .fee-list li{grid-template-columns:1fr auto}.fee-list li span:nth-child(2){display:none}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}


.qr-box{margin:8px 0 4px}
.qr{display:block;width:200px;height:200px;border-radius:12px;background:#fff;padding:8px;box-sizing:content-box}
.qr svg{width:100%;height:100%;display:block}
.dest-row{display:contents}.dest-row[hidden]{display:none}