:root{--bg:#0b0f12;--panel:#131a20;--panel2:#0f151a;--text:#e5f0ff;--muted:#9fb0c0;--green:#0ecb81;--red:#f6465d;--accent:#2e7df6;--line:#1b242c}
*{box-sizing:border-box}body{margin:0;font:14px/1.5 Pretendard,ui-sans-serif,system-ui,Segoe UI,Roboto,Helvetica,Arial;color:var(--text);background:var(--bg)}
.container{padding:16px;max-width:1400px;margin:0 auto}
.topbar{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:16px;padding:10px 16px;background:rgba(15,21,26,.9);border-bottom:1px solid var(--line)}
.logo{font-weight:700}.topnav a{margin:0 8px;color:var(--muted)}.spacer{flex:1}.btn{background:var(--accent);color:#fff;padding:10px 14px;border-radius:10px;border:0}
.btn.sm{padding:6px 10px;border-radius:8px;font-size:12px}.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--text)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px}
.grid{display:grid;gap:14px}.grid.cols-3{grid-template-columns:2fr 1fr 1fr}.grid.cols-2{grid-template-columns:2fr 1fr}
.input,select{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--panel2);color:var(--text)}
.order-toggle{position:fixed;right:16px;bottom:16px;z-index:60}
.order-panel{position:fixed;right:-420px;top:60px;width:400px;height:calc(100vh - 80px);background:var(--panel);border-left:1px solid var(--line);transition:right .25s ease;border-top-left-radius:12px;border-bottom-left-radius:12px;padding:16px;z-index:55}
.order-panel.open{right:0}.orderbook{background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.orderbook .row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px;padding:4px 8px;position:relative}.orderbook .row.buy{color:var(--green)}.orderbook .row.sell{color:var(--red)}
.orderbook .bar{position:absolute;inset:0;height:100%;opacity:.18}.orderbook .bar.buy{background:var(--green)}.orderbook .bar.sell{background:var(--red)}
@media(max-width:980px){.grid.cols-3{grid-template-columns:1fr}.grid.cols-2{grid-template-columns:1fr}.order-panel{top:56px;width:100%;right:-100%}}