:root{--bg: #0a0a0a;--surface: #111111;--surface-2: #1a1a1a;--surface-3: #222222;--accent: #7b6cff;--accent-glow: rgba(123,108,255,.35);--text-primary: #ffffff;--text-muted: rgba(255,255,255,.45);--correct: #00ff87;--wrong: #ff3d6b;--border: rgba(255,255,255,.7);--radius: 0px;--transition: .08s ease;--hud-height: 60px;--hand-height: 220px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{height:100%;font-family:Inter,system-ui,-apple-system,sans-serif}body{height:100%;overflow:hidden;background:var(--bg);color:var(--text-primary);-webkit-font-smoothing:antialiased;-webkit-user-select:none;user-select:none}#app{display:flex;flex-direction:column;height:100vh}@keyframes slide-up{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes flip-reveal{0%{transform:rotateY(0)}50%{transform:rotateY(90deg)}to{transform:rotateY(0)}}@keyframes correct-flash{0%,to{outline:3px solid var(--correct)}50%{outline:6px solid var(--correct)}}@keyframes 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