:root{
  --bg:#0b0e11; --bg2:#11151a; --panel:#151a21; --panel2:#1b222b;
  --line:#232c38; --txt:#e6edf5; --dim:#8b9bad; --dim2:#5f6f80;
  --green:#2ee6a8; --red:#ff5d6c; --blue:#4aa8ff; --amber:#ffc857; --violet:#a78bfa;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;height:100%}
body{
  background:var(--bg); color:var(--txt);
  font:14px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
.layout{display:flex;min-height:100vh}

/* sidebar */
.sidebar{
  width:212px;flex:0 0 212px;background:var(--bg2);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:18px 12px;position:sticky;top:0;height:100vh;
}
.brand{font-size:19px;font-weight:700;letter-spacing:.14em;padding:4px 10px 18px}
.brand span{color:var(--green)}
nav{display:flex;flex-direction:column;gap:4px}
nav a{
  display:flex;flex-direction:column;gap:1px;padding:10px 12px;border-radius:9px;
  color:var(--dim);border:1px solid transparent;transition:.15s;
}
nav a b{font-weight:600;font-size:14px;color:var(--txt)}
nav a small{font-size:11px;color:var(--dim2)}
nav a:hover{background:var(--panel);color:var(--txt)}
nav a.active{background:linear-gradient(90deg,rgba(46,230,168,.14),rgba(46,230,168,.02));border-color:rgba(46,230,168,.35)}
nav a.active b{color:var(--green)}
.sidefoot{margin-top:auto;padding:10px;font-size:11px;color:var(--dim2);line-height:1.7}
.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--dim2);margin-right:6px;vertical-align:1px}
.dot.on{background:var(--green);box-shadow:0 0 8px rgba(46,230,168,.8)}
.dot.off{background:var(--red)}

/* main */
main{flex:1;min-width:0;padding:22px 26px 40px}
.head{display:flex;align-items:center;gap:14px;margin-bottom:18px;flex-wrap:wrap}
.head h1{font-size:19px;margin:0;font-weight:650}
.pill{
  font-size:11px;padding:3px 10px;border-radius:99px;border:1px solid var(--line);
  color:var(--dim);background:var(--panel);
}
.pill.live{color:var(--red);border-color:rgba(255,93,108,.4);background:rgba(255,93,108,.08)}
.pill.paper{color:var(--blue);border-color:rgba(74,168,255,.4);background:rgba(74,168,255,.08)}
.pill.ok{color:var(--green);border-color:rgba(46,230,168,.4);background:rgba(46,230,168,.08)}
.spacer{flex:1}

.grid{display:grid;gap:14px}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:1100px){.g4{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:1fr}}

.card{
  background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 16px;
}
.card h3{margin:0 0 10px;font-size:13px;color:var(--dim);font-weight:600;letter-spacing:.04em}
.metric{font-size:22px;font-weight:680;letter-spacing:.02em}
.metric.sm{font-size:17px}
.sub{font-size:11px;color:var(--dim2);margin-top:2px}

table{width:100%;border-collapse:collapse;font-size:12.5px}
th,td{text-align:left;padding:9px 8px;border-bottom:1px solid var(--line);white-space:nowrap}
th{color:var(--dim);font-weight:600;font-size:11px;letter-spacing:.05em;text-transform:uppercase}
tr:last-child td{border-bottom:none}
tbody tr:hover{background:var(--panel2)}
.num{font-variant-numeric:tabular-nums;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.pos{color:var(--green)}.neg{color:var(--red)}.warn{color:var(--amber)}

.btn{
  display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:9px;
  border:1px solid var(--line);background:var(--panel2);color:var(--txt);cursor:pointer;
  font-size:13px;font-weight:600;transition:.15s;
}
.btn:hover{border-color:var(--dim2)}
.btn.primary{background:linear-gradient(180deg,#2ee6a8,#18b986);color:#04241a;border-color:transparent}
.btn.primary:hover{filter:brightness(1.06)}
.btn.danger{background:rgba(255,93,108,.12);color:var(--red);border-color:rgba(255,93,108,.4)}
.btn:disabled{opacity:.45;cursor:not-allowed}

.log{
  background:#0a0d10;border:1px solid var(--line);border-radius:10px;padding:10px 12px;
  height:260px;overflow:auto;font:12px/1.65 ui-monospace,SFMono-Regular,Menlo,monospace;
}
.log div{white-space:pre-wrap;word-break:break-all}
.log .t{color:var(--dim2)}
.log .INFO{color:#b9c6d4}
.log .ERROR{color:var(--red)}
.log .CRITICAL{color:#fff;background:rgba(255,93,108,.18);padding:0 4px;border-radius:3px}

label.f{display:block;margin-bottom:12px}
label.f span{display:block;font-size:12px;color:var(--dim);margin-bottom:5px}
input[type=text],input[type=password],input[type=number],select{
  width:100%;padding:9px 11px;border-radius:9px;border:1px solid var(--line);
  background:#0d1117;color:var(--txt);font-size:13px;font-family:inherit;
}
input:focus,select:focus{outline:none;border-color:var(--green)}
.hint{font-size:11px;color:var(--dim2);margin-top:4px}
.row{display:flex;gap:12px;flex-wrap:wrap}
.row>*{flex:1;min-width:180px}
.switch{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--txt);margin:8px 0}
.switch input{width:16px;height:16px;accent-color:var(--green)}
.note{
  font-size:12px;color:var(--dim);background:rgba(255,200,87,.07);
  border:1px solid rgba(255,200,87,.25);border-radius:9px;padding:10px 12px;margin-bottom:14px;
}
.badge{font-size:10.5px;padding:2px 7px;border-radius:6px;background:var(--panel2);color:var(--dim);border:1px solid var(--line)}
.badge.g{color:var(--green);border-color:rgba(46,230,168,.35)}
.badge.r{color:var(--red);border-color:rgba(255,93,108,.35)}
.badge.b{color:var(--blue);border-color:rgba(74,168,255,.35)}
.empty{color:var(--dim2);font-size:12.5px;padding:14px 4px}

/* login / standalone pages (no sidebar) */
.plain-wrap{
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  padding:28px 20px;
  background:radial-gradient(1200px 600px at 50% -10%,rgba(46,230,168,.08),transparent 60%),var(--bg);
}
.login-box{width:100%;max-width:380px}

/* ================= 交易区（上三栏） ================= */
.trade-wrap{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px 300px;
  gap:14px;
  align-items:stretch;
}
@media(max-width:1500px){ .trade-wrap{grid-template-columns:minmax(0,1fr) 300px} .arb-card{grid-column:1/-1} }
@media(max-width:1100px){ .trade-wrap{grid-template-columns:1fr} }
@media(max-width:1100px){ .arb-card{grid-column:auto} }

/* 图表 */
.chart-card{display:flex;flex-direction:column;padding:16px 16px 10px}
.chart-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:10px;flex-wrap:wrap}
.chart-title{font-size:15px;font-weight:650;letter-spacing:.02em}
.chart-prices{display:flex;gap:26px;align-items:flex-start}
.cp{text-align:left}
.cp.right{text-align:right}
.cp-label{font-size:11px;color:var(--dim2);margin-bottom:1px}
.cp-val{font-size:16px;font-weight:650;font-variant-numeric:tabular-nums}
.cp:first-child .cp-val{color:var(--dim)}
.cp:nth-child(2) .cp-val{color:var(--amber)}
.countdown{font-size:22px;font-weight:700;color:var(--red);font-variant-numeric:tabular-nums;line-height:1.1}
.cp-age{font-size:10px;color:var(--dim2);margin-top:1px}
.cp-age.stale{color:var(--amber)}
#chart{width:100%;height:300px;display:block}

/* 视图切换 */
.view-tabs{display:flex;align-items:center;gap:6px;margin:2px 0 10px}
.vtab{
  padding:5px 12px;border-radius:7px;border:1px solid var(--line);background:transparent;
  color:var(--dim);font-size:12px;cursor:pointer;font-family:inherit;transition:.15s;
}
.vtab:hover{color:var(--txt)}
.vtab.active{background:rgba(46,230,168,.12);border-color:rgba(46,230,168,.45);color:var(--green)}
.vlink{font-size:11px;color:var(--dim2);border-bottom:1px dotted var(--dim2)}
.vlink:hover{color:var(--txt)}
.pm-hint{
  margin-top:10px;padding:10px 12px;border-radius:9px;font-size:12px;line-height:1.6;
  color:var(--dim);background:rgba(255,200,87,.07);border:1px solid rgba(255,200,87,.25);
}
.pm-hint a{color:var(--amber)}

/* 手动下单 */
.order-card{display:flex;flex-direction:column}
.order-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.order-title{font-size:13px;font-weight:650;color:var(--txt)}
.outcome-row{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-bottom:14px}
.oc{
  display:flex;flex-direction:column;align-items:center;gap:2px;padding:10px 6px;
  border-radius:10px;border:1px solid var(--line);background:var(--panel2);
  color:var(--dim);cursor:pointer;font-size:12px;transition:.15s;font-family:inherit;
}
.oc b{font-size:15px;font-weight:700;color:var(--txt);font-variant-numeric:tabular-nums}
.oc.up:hover{border-color:rgba(46,230,168,.5)}
.oc.down:hover{border-color:rgba(255,93,108,.5)}
.oc.up.active{background:rgba(46,230,168,.14);border-color:var(--green)}
.oc.up.active b{color:var(--green)}
.oc.down.active{background:rgba(255,93,108,.14);border-color:var(--red)}
.oc.down.active b{color:var(--red)}

.amt-row{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:10px}
.amt{font-size:30px;font-weight:700;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.amt-hint{font-size:11px;color:var(--dim2);text-align:right;padding-bottom:6px}

.preset-row{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin-bottom:12px}
.preset{
  padding:7px 0;border-radius:8px;border:1px solid var(--line);background:#0d1117;
  color:var(--dim);font-size:12px;cursor:pointer;font-family:inherit;transition:.15s;
}
.preset:hover{color:var(--txt);border-color:var(--dim2)}
.preset.clear{color:var(--dim2)}

.btn.buy{
  width:100%;justify-content:center;padding:13px 0;font-size:14px;font-weight:700;
  border-radius:10px;border:none;background:#2a3442;color:var(--dim2);cursor:not-allowed;
}
.btn.buy.is-up{background:linear-gradient(180deg,#2ee6a8,#14a97e);color:#04241a;cursor:pointer}
.btn.buy.is-down{background:linear-gradient(180deg,#ff5d6c,#d63c4c);color:#fff;cursor:pointer}
.order-foot{margin-top:10px;font-size:11px;color:var(--dim2);line-height:1.5;min-height:32px}
.order-foot.ok{color:var(--green)}
.order-foot.bad{color:var(--red)}

/* 套利分析 */
.arb-card{display:flex;flex-direction:column}
.arb-main{display:flex;flex-direction:column;gap:8px;margin-bottom:10px}
.arb-item{display:flex;justify-content:space-between;align-items:baseline;font-size:12px;color:var(--dim)}
.arb-item b{font-size:16px;font-weight:700;color:var(--txt);font-variant-numeric:tabular-nums}
.arb-item b.dim{font-size:11px;font-weight:500;color:var(--dim2)}
.arb-verdict{
  font-size:12px;line-height:1.55;color:var(--dim);background:#0d1117;
  border:1px solid var(--line);border-radius:9px;padding:9px 11px;min-height:58px;
}
.arb-verdict.good{color:var(--green);border-color:rgba(46,230,168,.4);background:rgba(46,230,168,.07)}
.arb-verdict.bad{color:var(--dim);border-color:rgba(255,93,108,.25);background:rgba(255,93,108,.05)}
.arb-sep{height:1px;background:var(--line);margin:12px 0}
.arb-detail{display:flex;flex-direction:column;gap:7px}
.arb-detail>div{display:flex;justify-content:space-between;font-size:12px;color:var(--dim)}
.arb-detail b{color:var(--txt);font-weight:600;font-variant-numeric:tabular-nums}
.dim{color:var(--dim2)}