:root{--bg: #0a1016;--panel: #121d28;--line: #233444;--ink: #eaf3f7;--dim: #8fa9bd;--accent: #6ee7a8;--up: #6ee7a8;--down: #ff7a8a}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:radial-gradient(900px 560px at 50% -8%,#0f2030,var(--bg));color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,sans-serif;display:flex;justify-content:center;-webkit-user-select:none;user-select:none}#app{width:100%;max-width:460px;padding:12px 12px 26px;position:relative}header{text-align:center;margin-bottom:6px}h1{margin:0;font-size:24px;letter-spacing:3px;font-weight:800;color:var(--accent)}.sub{margin:4px 0 0;color:var(--dim);font-size:12px;line-height:1.4}.bar{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;align-items:center;margin:9px 0}.seg{display:inline-flex;background:var(--panel);border:1px solid var(--line);border-radius:999px;overflow:hidden}.seg.full{display:flex;width:100%;border-radius:10px;margin-bottom:10px}.seg button{background:none;border:none;color:var(--dim);padding:6px 13px;font:700 13px system-ui;cursor:pointer;flex:1}.seg button.active{background:var(--accent);color:#04201a}#sideseg button[data-side=sell].active{background:var(--down);color:#2a0509}.btn{background:var(--panel);border:1px solid var(--line);color:var(--ink);padding:8px 16px;border-radius:999px;font:700 14px system-ui;cursor:pointer}.btn:hover:not(:disabled){border-color:var(--accent)}.btn:disabled{opacity:.4;cursor:default}.btn.primary{background:var(--accent);color:#04201a;border-color:var(--accent)}.btn.big{width:100%;padding:11px;border-radius:10px;font-size:15px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin:6px 0 8px}.stat{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:6px 4px;text-align:center}.stat.wide{grid-column:span 4}.stat span{display:block;color:var(--dim);font-size:10px;text-transform:uppercase;letter-spacing:.5px}.stat b{font-size:15px}#spark{width:100%;height:92px;background:var(--panel);border:1px solid var(--line);border-radius:10px;margin-bottom:6px;display:block}.fairhint{text-align:center;color:var(--dim);font-size:12px;margin-bottom:10px}.fairhint b{color:var(--ink)}.up{color:var(--up)}.down{color:var(--down)}.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px}.field{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.field label{color:var(--dim);font-size:13px;font-weight:600}.stepper{display:flex;align-items:center;gap:4px}.stepper button{background:#0c151d;border:1px solid var(--line);color:var(--ink);width:34px;height:32px;border-radius:8px;font:700 14px system-ui;cursor:pointer}.stepper button:hover{border-color:var(--accent)}.stepper span{min-width:62px;text-align:center;font-weight:800;font-size:15px}.preview{background:#0c151d;border:1px solid var(--line);border-radius:8px;padding:8px;font-size:12px;color:var(--dim);margin:6px 0 10px;min-height:18px}.preview b{color:var(--ink)}.logwrap{margin-top:12px}.logtitle{color:var(--dim);font-size:11px;text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}.log{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:6px 10px;max-height:120px;overflow-y:auto;font-size:12px}.logline{padding:3px 0;border-bottom:1px solid rgba(255,255,255,.04);font-variant-numeric:tabular-nums}.logline:last-child{border-bottom:none}.logline.dim{color:var(--dim)}.hint{text-align:center;color:var(--dim);font-size:11px;margin-top:10px;line-height:1.5}.overlay{position:fixed;inset:0;background:#040a0ed1;display:flex;align-items:center;justify-content:center;padding:16px}.overlay.hidden{display:none}.card-modal{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px;width:100%;max-width:340px;text-align:center}.card-modal h2{margin:0 0 6px;color:var(--accent)}.big-score{font-size:38px;font-weight:800;margin:6px 0 14px}.sumrow{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px solid var(--line);font-size:14px}.sumrow span{color:var(--dim)}.card-modal .btn{margin-top:16px}