:root{--bg:#0B0E11;--card:#181A20;--card2:#1E2329;--gold:#F0B90B;--gold-light:#FCD535;--text:#EAECEF;--muted:#848E9C;--border:#2B3139;--green:#0ECB81;--red:#F6465D;--teal:#50E3C2;--teal-light:#97FCE4;--indigo:#7774FF}
[hidden]{display:none!important}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.5;font-size:14px}
a{color:inherit}
button{font:inherit;cursor:pointer}
input{font:inherit}
.container{max-width:1440px;margin:0 auto;padding:0 16px}
.muted{color:var(--muted)}.gold{color:var(--gold)}.tiny{font-size:12px;margin-top:10px}
.preview-banner{background:linear-gradient(90deg,#1E1D45,#3B3410,#1E1D45);color:var(--gold-light);text-align:center;font-weight:600;font-size:13px;padding:7px 12px;letter-spacing:1px;border-bottom:1px solid #3C3A7A;position:sticky;top:0;z-index:110}
header{position:sticky;top:33px;background:rgba(11,14,17,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);z-index:100;padding:12px 0}
.nav{display:flex;align-items:center;gap:16px}
.logo{font-size:24px;font-weight:800;color:var(--gold);display:flex;align-items:center;gap:10px;text-decoration:none}
.logo-sub{font-size:14px;color:var(--gold-light);border:1px solid #67520F;border-radius:6px;padding:1px 6px;font-weight:600}
.logo-icon{width:54px;height:30px;background:url(fly-logo.png) center/contain no-repeat}
.links{flex:1;display:flex;gap:4px;margin-left:12px}
.links a{text-decoration:none;font-size:15px;padding:6px 12px;border-radius:8px}
.links a:hover{color:var(--gold)}
.links a.active{color:var(--gold);background:#2B3139}
.btn-wallet{background:linear-gradient(135deg,#F0B90B,#FCD535);color:#181A20;border:0;border-radius:10px;padding:8px 16px;font-weight:700;white-space:nowrap}
.btn-wallet.connected{background:#2B3139;color:var(--gold-light);border:1px solid #67520F}
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:14px}
.card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;gap:8px}
.card-head h3{color:var(--gold);font-size:16px}
.demo-label,.demo-chip{background:#2D2810;color:var(--gold-light);border:1px solid #67520F;border-radius:6px;font-size:11px;padding:1px 7px;white-space:nowrap}
.demo-chip{font-size:10px;padding:0 5px}
main{padding-top:14px}
.market-bar{display:flex;align-items:center;gap:26px;flex-wrap:wrap;margin-bottom:12px}
.market-select{position:relative}
.market-btn{background:var(--card2);border:1px solid var(--border);color:var(--text);border-radius:10px;padding:8px 12px;font-size:18px;font-weight:800;display:flex;align-items:center;gap:8px}
.perp-tag{font-size:11px;color:var(--gold);border:1px solid #67520F;border-radius:4px;padding:0 5px;font-weight:600}
.caret{color:var(--muted);font-size:12px}
.market-menu{display:none;position:absolute;top:110%;left:0;min-width:220px;background:#1E2329;border:1px solid #3C434D;border-radius:10px;z-index:50;padding:6px;box-shadow:0 10px 30px rgba(0,0,0,.6)}
.market-menu.open{display:block}
.mm-item{display:flex;justify-content:space-between;padding:9px 10px;border-radius:8px;cursor:pointer}
.mm-item span{color:var(--muted);font-size:12px}
.mm-item:hover,.mm-item.on{background:#2B3139;color:var(--gold-light)}
.mstat .v{font-weight:700;font-size:15px;font-variant-numeric:tabular-nums}
.mstat.main .v{font-size:20px}
.mstat .l{color:var(--muted);font-size:12px}
.up{color:var(--green)!important}.down{color:var(--red)!important}
.grid>*,.grid2>*{min-width:0}
.grid{display:grid;grid-template-columns:minmax(0,1fr) 280px 320px;gap:12px;margin-bottom:12px}
.grid2{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:12px;margin-bottom:20px}
.chart-card{display:flex;flex-direction:column;min-height:520px}
.chart-wrap{position:relative;flex:1;min-height:440px}
#chart{position:absolute;inset:0}
.chart-watermark{position:absolute;top:44%;left:0;right:0;text-align:center;font-size:28px;font-weight:800;color:rgba(240,185,11,.10);pointer-events:none;letter-spacing:4px}
.tf{display:flex;gap:4px;flex-wrap:wrap}
.tf button,.tabs button{background:transparent;border:0;color:var(--muted);padding:5px 10px;border-radius:7px}
.tf button.on,.tabs button.on{color:var(--gold);background:#2B3139}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);padding-bottom:8px;margin-bottom:12px;overflow-x:auto}
.tabs.small{border:0;padding:0;margin:0}
.book-hdr{display:grid;grid-template-columns:1.1fr 1fr 1fr;color:var(--muted);font-size:12px;padding:0 4px 6px}
.book-hdr span:not(:first-child){text-align:right}
.book{display:flex;flex-direction:column;font-variant-numeric:tabular-nums;font-size:12.5px}
.book.asks{flex-direction:column-reverse}
.brow{display:grid;grid-template-columns:1.1fr 1fr 1fr;padding:2px 4px;position:relative}
.brow span{position:relative;z-index:1}
.brow span:not(:first-child){text-align:right}
.brow i{position:absolute;right:0;top:1px;bottom:1px;z-index:0}
.asks .brow span:first-child{color:var(--red)}.asks .brow i{background:rgba(246,70,93,.12)}
.bids .brow span:first-child{color:var(--green)}.bids .brow i{background:rgba(14,203,129,.12)}
.book-mid{display:flex;justify-content:space-between;align-items:center;padding:8px 4px;margin:4px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.book-mid #midPx{font-size:17px;font-weight:800}
.trades .brow span:first-child{font-weight:600}
.side-toggle{display:grid;grid-template-columns:1fr 1fr;background:var(--card2);border-radius:10px;padding:3px;margin-bottom:12px}
.side-toggle button{border:0;background:transparent;color:var(--muted);padding:9px;border-radius:8px;font-weight:700}
.side-toggle .long.on{background:var(--green);color:#04170f}
.side-toggle .short.on{background:var(--red);color:#fff}
.field{display:block;margin-bottom:12px}
.f-l{display:flex;justify-content:space-between;font-size:13px;color:#B7BDC6;margin-bottom:6px}
.inp{display:flex;align-items:center;background:var(--card2);border:1px solid #333A44;border-radius:10px;padding:0 12px}
.inp:focus-within{border-color:var(--gold)}
.inp input{flex:1;min-width:0;background:transparent;border:0;outline:0;color:var(--text);padding:10px 0;font-size:15px}
.unit{color:var(--muted);font-size:13px}
.pct{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin:-4px 0 12px}
.pct button,.lev-marks button{background:var(--card2);border:1px solid #333A44;color:#B7BDC6;border-radius:7px;padding:4px 0;font-size:12px}
.pct button:hover,.lev-marks button:hover,.lev-marks button.on{border-color:var(--gold);color:var(--gold)}
input[type=range]{width:100%;accent-color:var(--gold);height:22px}
.lev-marks{display:grid;grid-template-columns:repeat(6,1fr);gap:4px;margin-top:4px}
.chk{display:flex;align-items:center;gap:8px;color:#B7BDC6;font-size:13px;margin:4px 0 10px;cursor:pointer}
.chk input{accent-color:var(--gold)}
.warn{color:#F0B90B;font-size:12px;min-height:0}
.summary{background:var(--card2);border-radius:10px;padding:10px 12px;margin:6px 0 12px;font-size:13px}
.summary div{display:flex;justify-content:space-between;padding:3px 0}
.summary span{color:var(--muted)}
.summary b{font-variant-numeric:tabular-nums;font-weight:600}
.summary .liq{color:#F0B90B}
.btn-trade{width:100%;border:0;border-radius:12px;padding:13px;font-size:16px;font-weight:800}
.btn-trade.long{background:var(--green);color:#04170f}
.btn-trade.short{background:var(--red);color:#fff}
.btn-ghost{background:transparent;border:1px solid #67520F;color:var(--gold-light);border-radius:9px;padding:8px 0}
.btn-ghost:hover{background:#2B3139}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;min-width:640px}
th,td{padding:10px 8px;text-align:left;border-bottom:1px solid var(--border);font-size:13px;white-space:nowrap}
th{color:var(--muted);font-weight:500}
.pos-empty{text-align:center;color:var(--muted);padding:36px 10px}
.acct-addr{background:var(--card2);border-radius:9px;padding:9px 12px;font-family:ui-monospace,Menlo,monospace;font-size:13px;color:var(--gold-light);margin-bottom:10px;word-break:break-all}
.acct-rows div{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px dashed #2B3139;font-size:13px}
.acct-rows span{color:var(--muted)}
.acct-btns{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}
.foot{color:var(--muted);font-size:12px;text-align:center;padding:10px 0 30px}
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%) translateY(20px);background:#2B3139;border:1px solid var(--gold);color:var(--gold-light);padding:12px 20px;border-radius:12px;font-weight:600;opacity:0;pointer-events:none;transition:.25s;z-index:200;max-width:90vw;text-align:center;box-shadow:0 10px 30px rgba(0,0,0,.6)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media (max-width:1180px){
  .grid{grid-template-columns:minmax(0,1fr) 320px}
  .chart-card{grid-column:1/-1}
  .book-card{grid-row:2}
}
@media (max-width:760px){
  .container{padding:0 10px}
  .preview-banner{font-size:12px;letter-spacing:0}
  header{top:31px}
  .nav{flex-wrap:wrap;gap:8px}
  .logo{font-size:20px}
  .links{order:3;flex-basis:100%;margin-left:0;overflow-x:auto}
  .links a{font-size:14px;padding:5px 10px;white-space:nowrap}
  .btn-wallet{margin-left:auto;padding:7px 12px;font-size:13px}
  .market-bar{gap:14px 20px}
  .hide-sm{display:none}
  .grid,.grid2{grid-template-columns:1fr}
  .chart-card{min-height:380px}
  .chart-wrap{min-height:320px}
  .book-card{grid-row:auto;order:3}
  .trade-card{order:2}
  .chart-watermark{font-size:20px}
}

.foot a{color:var(--indigo)}.foot a:hover{color:#9997FF}

/* language switch (zh | EN) */
.fly-lang{display:inline-flex;align-items:center;gap:0;border:1px solid #3C434D;border-radius:999px;padding:2px;background:#181A20;flex:none;white-space:nowrap;vertical-align:middle;line-height:1}.fly-lang a{display:inline-block;margin:0 !important;padding:5px 10px !important;border-radius:999px;font-size:13px !important;font-weight:700;line-height:1.2;color:#848E9C !important;text-decoration:none;background:transparent !important}.fly-lang a.on{background:#F0B90B !important;color:#181A20 !important}.fly-lang a:not(.on):hover{color:#F0B90B !important}.fly-lang i{width:1px;height:12px;background:#3C434D;margin:0 1px;display:none}