:root{--bg: #0a0d17;--panel: #161b2c;--grid: #232a40;--ink: #e9eefc;--dim: #93a0c4;--accent: #5ad0ff}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:radial-gradient(900px 560px at 50% -8%,#131a30,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:560px;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:13px;line-height:1.4}.sub b{color:var(--ink)}.bar{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;align-items:center;margin:10px 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:#06121f}.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)}.scoreboard{display:flex;gap:8px;justify-content:center;margin:8px 0;flex-wrap:wrap}.readout{background:var(--panel);border:1px solid var(--grid);border-radius:8px;padding:5px 12px;font:800 18px ui-monospace,monospace;color:var(--accent);min-width:72px;text-align:center}.readout span{color:var(--dim);font-size:10px;display:block;font-weight:600;letter-spacing:.5px}.stage{display:flex;gap:14px;justify-content:center;align-items:flex-start;margin-top:6px}.playarea{position:relative}#well{display:block;background:#10131f;border:1px solid var(--grid);border-radius:10px;box-shadow:0 8px 30px #00000073;max-width:100%;height:auto}.side{display:flex;flex-direction:column;gap:12px;width:130px}.nextbox,.legend{background:var(--panel);border:1px solid var(--grid);border-radius:10px;padding:8px 10px}.label{color:var(--dim);font-size:11px;font-weight:700;letter-spacing:.5px;margin-bottom:4px}#next{display:block;width:100%}.legend div{font-size:12px;color:var(--dim);margin:4px 0;display:flex;align-items:center;gap:6px}.legend .tip{display:block;margin-top:8px;line-height:1.4;color:var(--dim)}.chip{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;border-radius:4px;font-weight:800;color:#0c1020}.chip.pos{background:#39b6ff}.chip.neg{background:#ff5d6c}.overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#080a14cc;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:280px}.card h2{margin:0 0 6px;font-size:24px;color:var(--accent)}.card p{margin:6px 0;color:var(--dim);font-size:14px}.card .row{display:flex;gap:8px;justify-content:center;margin-top:14px}.hint{text-align:center;color:var(--dim);font-size:12px;margin-top:12px;line-height:1.5}@media(max-width:520px){.stage{flex-direction:column;align-items:center}.side{flex-direction:row;width:auto}}