:root{--blue:#6288c4;--ink:#344567;--pink:#f59db7}
*{box-sizing:border-box}body{margin:0;background:linear-gradient(135deg,#f5f9ff,#fff9fb);font-family:system-ui,"Microsoft YaHei",sans-serif;color:var(--ink)}
main{max-width:1280px;margin:auto;padding:24px}header{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:18px}
h1{font-size:clamp(25px,3vw,38px);margin:0;color:#3d5785}.sub{margin-top:6px;color:#7890b5;font-size:14px}
.pill{background:var(--blue);color:#fff;border-radius:999px;padding:9px 15px;font-size:13px;font-weight:700}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:18px}
.game-wrap{position:relative;border:3px solid #c5ddfb;border-radius:22px;overflow:hidden;background:#dff3ff;box-shadow:0 12px 32px #8faedb33}
#gameCanvas canvas{width:100%;height:auto;display:block}
.overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#f5faffbd;backdrop-filter:blur(4px);padding:20px;text-align:center}
.overlay-card{max-width:470px;background:#ffffffed;border:2px solid #d6e4fb;border-radius:22px;padding:26px;box-shadow:0 12px 36px #5b78a522}
.overlay h2{margin:0 0 10px;font-size:28px;color:#45669b}.overlay p{line-height:1.8;color:#657b9d;margin:8px 0 18px}
button{border:0;background:var(--blue);color:white;border-radius:13px;padding:12px 17px;font-weight:750;font-size:14px;cursor:pointer;box-shadow:0 4px 0 #45689f}
button:active{transform:translateY(2px);box-shadow:0 2px 0 #45689f}button.secondary{background:#edf4ff;color:#45669b;box-shadow:none;border:1px solid #cbdcf5}
.panel{background:#fff;border:1px solid #e1eaf8;border-radius:20px;padding:18px;box-shadow:0 8px 24px #7b9bc01c}
.panel h3{margin:0 0 12px;color:#4b6797;font-size:17px}.stat{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid #edf2fa;font-size:14px}.stat strong{font-size:20px;color:#4c70a8}
.status{display:inline-flex;align-items:center;gap:7px;color:#6d84a8;font-size:13px}.dot{width:9px;height:9px;border-radius:50%;background:#e6a3b6;display:inline-block}.dot.live{background:#68b8a7}
.camera{margin-top:14px;aspect-ratio:4/3;background:#edf4fb;border-radius:14px;overflow:hidden;position:relative}.camera video{width:100%;height:100%;object-fit:cover;transform:scaleX(-1)}.camera canvas{position:absolute;inset:0;width:100%;height:100%;transform:scaleX(-1)}
.help{font-size:12px;line-height:1.75;color:#7488a8;margin:10px 0}.controls{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.tips{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}.tip{background:#fff;border:1px solid #e4edf9;border-radius:15px;padding:12px;font-size:13px;color:#6e82a3;line-height:1.6}.tip b{display:block;color:#4d6b9c;margin-bottom:3px;font-size:14px}
footer{text-align:center;color:#91a2bd;font-size:12px;padding:18px 0 4px}
@media(max-width:900px){main{padding:12px}.layout{grid-template-columns:1fr}.tips{grid-template-columns:1fr}.panel{order:2}}