:root{font-family:Segoe UI,Yu Gothic UI,Arial,sans-serif;color:#e8efff;background:#04060e;font-synthesis:none;text-rendering:geometricprecision;--cyan: #08d6f3;--cyan-dim: #087995;--panel: rgba(10, 17, 34, .88);--border: rgba(9, 201, 234, .38);--puyo-red: #ef4444;--puyo-green: #22c55e;--puyo-blue: #3b82f6;--puyo-yellow: #facc15;--puyo-purple: #a855f7;--puyo-ojama: #e2e8f0}*{box-sizing:border-box}body{margin:0;min-width:320px}button,input{font:inherit}button{color:inherit;cursor:pointer}button:disabled{cursor:not-allowed}.app{min-height:100vh;overflow:hidden;position:relative;isolation:isolate;background:radial-gradient(ellipse 430px 90% at 57% 46%,rgba(8,194,231,.17),transparent 74%),radial-gradient(ellipse 470px 100% at 100% 30%,rgba(239,29,153,.15),transparent 63%),linear-gradient(135deg,#050811,#03040a 60%,#08040f)}.background-grid{position:absolute;top:0;right:0;bottom:0;left:0;z-index:-1;background-image:linear-gradient(rgba(0,196,230,.065) 1px,transparent 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