*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-deep: #07080f;--bg-dark: #0d0f1c;--bg-card: #111827;--bg-card-hover: #161f35;--border: rgba(255, 255, 255, .07);--border-glow: rgba(99, 102, 241, .4);--accent-purple: #6366f1;--accent-violet: #8b5cf6;--accent-pink: #ec4899;--accent-cyan: #06b6d4;--accent-green: #10b981;--accent-orange: #f59e0b;--grad-hero: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);--grad-rubik: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);--grad-snake: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);--grad-memory: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #475569;--nav-h: 64px;font-family:Outfit,system-ui,sans-serif;font-size:16px}[data-theme=light]{--bg-deep: #f0f4ff;--bg-dark: #ffffff;--bg-card: #ffffff;--bg-card-hover: #f1f5f9;--border: rgba(0, 0, 0, .08);--border-glow: rgba(99, 102, 241, .35);--text-primary: #0f172a;--text-secondary: 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fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@keyframes matchPop{0%{transform:rotateY(180deg) scale(1)}50%{transform:rotateY(180deg) scale(1.15)}to{transform:rotateY(180deg) scale(1)}}@keyframes bounce{0%,to{transform:translateY(0)}40%{transform:translateY(-20px)}70%{transform:translateY(-10px)}}@media(max-width:640px){.hero{padding:3rem 1.5rem 2rem}.games-section{padding:0 1rem 3rem}.games-grid{grid-template-columns:1fr}.memory-grid{grid-template-columns:repeat(4,1fr);gap:.5rem}.rubik-key-guide{min-width:unset;max-width:100%}}