:root{--neon-cyan:#00f3ff;--neon-magenta:#f05;--neon-amber:#fa0;--bg-deep:#050811;--panel-bg:#081020d9;--border-cyan:#00f3ff66}*{box-sizing:border-box;-webkit-user-select:none;user-select:none;margin:0;padding:0}html,body{background-color:var(--bg-deep);color:#e0f7fc;width:100%;height:100%;font-family:Rajdhani,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,PingFang SC,Microsoft YaHei,sans-serif;overflow:hidden}#game-container{background:radial-gradient(circle,#0c162d 0%,#050811 100%);justify-content:center;align-items:center;width:100vw;height:100vh;display:flex;position:relative}#game-canvas{touch-action:none;outline:none;width:100%;height:100%;display:block}.top-bar{z-index:50;gap:10px;display:flex;position:absolute;top:12px;right:16px}.hud-btn{background:var(--panel-bg);border:1px solid var(--border-cyan);min-height:44px;color:var(--neon-cyan);letter-spacing:1px;cursor:pointer;backdrop-filter:blur(8px);text-transform:uppercase;border-radius:4px;padding:6px 14px;font-size:13px;transition:all .2s}[hidden]{display:none!important}.account-dialog{color:#e0f7fc;border:1px solid var(--border-cyan);background:#091222;border-radius:12px;width:min(480px,100% - 24px);max-height:calc(100dvh - 32px);margin:auto;padding:24px;line-height:1.5;overflow-y:auto}.account-dialog::backdrop{backdrop-filter:blur(6px);background:#02060edb}.account-dialog header{justify-content:space-between;align-items:start;gap:12px;margin-bottom:20px;display:flex}.account-dialog h1{font-size:26px}.account-dialog h2{margin-bottom:6px;font-size:15px}.account-dialog .eyebrow{color:var(--neon-cyan);letter-spacing:2px;font-size:11px}.account-dialog p{overflow-wrap:anywhere;margin-bottom:12px}.account-dialog .muted,.account-note{color:#9cb4cc;font-size:14px}.account-dialog button{min-height:44px;font:inherit;color:#e0f7fc;cursor:pointer;background:#13243a;border:1px solid #416079;border-radius:6px;padding:10px 14px}.account-dialog button:disabled{opacity:.5;cursor:wait}.account-dialog #account-close{min-width:44px;font-size:24px;line-height:1}.account-dialog #account-status{color:var(--neon-cyan);font-size:18px}.account-actions{gap:10px;margin:20px 0;display:grid}.account-actions #google-login{color:#101c2a;background:#eaf7fa}#save-comparison{grid-template-columns:1fr 1fr;gap:12px;padding:12px 0;display:grid}.account-dialog footer{gap:20px;margin-top:16px;display:flex}.account-dialog a{color:#a2dfea;font-size:14px}@media (width<=380px){.account-dialog{padding:18px}#save-comparison{grid-template-columns:1fr}}.hud-btn:hover{background:#00f3ff26;box-shadow:0 0 12px #00f3ff66}#loading-overlay{z-index:100;background:#04060c;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;transition:opacity .5s;display:flex;position:absolute;top:0;left:0}.loading-logo{letter-spacing:4px;color:#fff;text-shadow:0 0 10px var(--neon-cyan), 0 0 20px var(--neon-cyan);margin-bottom:24px;font-size:32px;font-weight:900}.loading-logo span{color:var(--neon-magenta);text-shadow:0 0 10px var(--neon-magenta)}.loading-box{border:1px solid var(--border-cyan);background:#0a1426cc;border-radius:4px;width:320px;max-width:85vw;padding:16px;box-shadow:0 0 25px #00f3ff26}.progress-track{background:#00f3ff1a;border-radius:4px;width:100%;height:8px;margin-bottom:12px;overflow:hidden}.progress-fill{background:linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));width:0%;height:100%;box-shadow:0 0 10px var(--neon-cyan);transition:width .3s}#loading-status{color:#8da4be;text-align:center;letter-spacing:.5px;font-size:13px}.ad-modal-overlay{backdrop-filter:blur(10px);z-index:200;background:#03060ed9;justify-content:center;align-items:center;width:100vw;height:100vh;display:flex;position:fixed;top:0;left:0}.ad-modal-content{border:1px solid var(--neon-cyan);text-align:center;background:#091222;border-radius:6px;width:420px;max-width:90vw;padding:28px 24px;position:relative;box-shadow:0 0 35px #00f3ff4d}.ad-title{color:var(--neon-cyan);letter-spacing:2px;text-shadow:0 0 8px #00f3ff99;margin-bottom:12px;font-size:18px}.ad-desc{color:#9cb4cc;margin-bottom:24px;font-size:14px;line-height:1.6}.ad-timer-ring{border:3px solid var(--neon-cyan);color:#fff;width:70px;height:70px;box-shadow:0 0 15px var(--neon-cyan), inset 0 0 10px var(--neon-cyan);border-radius:50%;justify-content:center;align-items:center;margin:0 auto 20px;font-size:28px;font-weight:800;display:flex}.ad-progress-bar{background:#ffffff1a;border-radius:3px;width:100%;height:6px;margin-bottom:12px;overflow:hidden}.ad-progress-fill{background:var(--neon-cyan);width:0%;height:100%;box-shadow:0 0 10px var(--neon-cyan)}.ad-status{color:#6482a0;letter-spacing:1px;font-size:11px}