:root{--bg: #0a0e1a;--panel: #141a2c;--grid: #25304a;--ink: #eef3ff;--dim: #8fa0c4;--accent: #5ad1ff;--accent2: #ffce5a}*{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;touch-action:none}#app{width:100%;max-width:460px;padding:12px 12px 26px}header{text-align:center;margin-bottom:6px}h1{margin:0;font-size:28px;letter-spacing:.5px;font-weight:800;background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}.sub{margin:4px 0 0;color:var(--dim);font-size:13px;line-height:1.35}.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:#052033}.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.primary{background:var(--accent);color:#052033;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:70px;text-align:center}.readout span{color:var(--dim);font-size:10px;display:block;font-weight:600;letter-spacing:.5px}.stage{position:relative;display:flex;justify-content:center;margin-top:6px}#court{background:#0d1322;border-radius:12px;border:1px solid var(--grid);display:block;aspect-ratio:1;touch-action:none}.tzone{position:absolute;top:0;bottom:0;width:50%;pointer-events:none}.tz-left{left:0}.tz-right{right:0}.overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#080c16c7;border-radius:12px}.overlay.hidden{display:none}.card{background:var(--panel);border:1px solid var(--grid);border-radius:14px;padding:20px 22px;text-align:center;max-width:300px}.card h2{margin:0 0 6px;font-size:24px;color:var(--accent2)}.card p{margin:4px 0;color:var(--dim);font-size:14px}.card b{color:var(--ink)}.row{display:flex;gap:8px;justify-content:center;margin-top:14px}.hint{display:flex;gap:6px 14px;justify-content:center;flex-wrap:wrap;color:var(--dim);font-size:12px;margin-top:10px}.hint b{color:var(--ink)}