:root{--bg: #15121d;--panel: #221c2e;--grid: #342b46;--ink: #f4eefb;--dim: #b6a8cf;--accent: #46d39a;--left: #ef4d6b;--right: #3ea6ff}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:radial-gradient(900px 560px at 50% -8%,#221a30,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}header{text-align:center;margin-bottom:6px}h1{margin:0;font-size:32px;letter-spacing:1px;font-weight:800;color:var(--accent)}.sub{margin:4px 0 0;color:var(--dim);font-size:12.5px;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(--grid);border-radius:999px;overflow:hidden}.seg button{background:none;border:none;color:var(--dim);padding:6px 13px;font:600 13px system-ui;cursor:pointer}.seg button.active{background:var(--accent);color:#0d2b20}.btn{background:var(--panel);border:1px solid var(--grid);color:var(--ink);padding:7px 14px;border-radius:999px;font:700 13px system-ui;cursor:pointer}.btn:hover{border-color:var(--accent)}.btn.accent{background:var(--accent);color:#0d2b20;border-color:var(--accent)}.scoreboard{display:flex;gap:8px;justify-content:center;margin:8px 0}.readout{background:var(--panel);border:1px solid var(--grid);border-radius:8px;padding:5px 12px;font:800 19px ui-monospace,monospace;color:var(--accent);min-width:76px;text-align:center}.readout span{color:var(--dim);font-size:10px;display:block;font-weight:600;letter-spacing:.5px}.balancewrap{margin:10px 0 4px}.balancelabel{display:flex;justify-content:space-between;font:700 10px system-ui;letter-spacing:.5px;color:var(--dim);padding:0 2px 3px}.balancelabel .bcenter{color:var(--accent)}.balance{position:relative;height:16px;border-radius:999px;overflow:hidden;background:var(--panel);border:1px solid var(--grid)}.bzone{position:absolute;top:0;bottom:0;width:14%}.bz-left{left:0;background:linear-gradient(90deg,#ef4d6bb3,#ef4d6b00)}.bz-right{right:0;background:linear-gradient(270deg,#3ea6ffb3,#3ea6ff00)}.bcenterline{position:absolute;left:50%;top:0;bottom:0;width:2px;background:#ffffff40;transform:translate(-1px)}.bneedle{position:absolute;top:-2px;bottom:-2px;left:50%;width:6px;border-radius:3px;background:var(--accent);transform:translate(-3px);transition:left .12s ease;box-shadow:0 0 8px #46d39a99}.bneedle.danger{background:var(--left);box-shadow:0 0 10px #ff5470cc}.stage{position:relative;display:flex;justify-content:center;margin-top:6px}#board{background:#211c2b;border-radius:10px;border:1px solid var(--grid);max-width:100%;touch-action:none}.overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#0f0c15d1;border-radius:10px;backdrop-filter:blur(3px)}.overlay.hidden{display:none}.card{background:var(--panel);border:1px solid var(--grid);border-radius:16px;padding:22px 26px;text-align:center;max-width:320px}.card h2{margin:0 0 6px;font-size:24px;color:var(--accent)}.card p{margin:6px 0;color:var(--dim);font-size:14px}.card p.tiny{font-size:11px;opacity:.8}.card .row{display:flex;gap:8px;justify-content:center;margin-top:14px}.nextrow{display:flex;align-items:center;gap:8px;justify-content:center;margin-top:10px}.nextlabel{font:700 11px system-ui;letter-spacing:.5px;color:var(--dim)}#next{background:var(--panel);border:1px solid var(--grid);border-radius:8px}.hint{text-align:center;color:var(--dim);font-size:12px;margin-top:10px}