*{margin:0;padding:0;box-sizing:border-box}:root{--bg-dark: #0a0e27;--bg-card: #151932;--bg-canvas: #1a1f3a;--text-primary: #e0e6f7;--text-secondary: #8b92b0;--accent-primary: #4c6ef5;--accent-hover: #5c7cfa;--accent-active: #3b5bdb;--snake-color: #51cf66;--snake-head: #37b24d;--food-color: #ff6b6b;--grid-line: rgba(255, 255, 255, .05);--overlay-bg: rgba(10, 14, 39, .95)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg-dark);color:var(--text-primary);min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1rem;line-height:1.5}.game-container{width:100%;max-width:800px;background:var(--bg-card);border-radius:1rem;box-shadow:0 8px 32px #0006;overflow:hidden}.game-header{padding:1.5rem;background:linear-gradient(135deg,var(--bg-card) 0%,var(--bg-canvas) 100%);border-bottom:1px solid 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768px){.desktop-hint{display:inline}.dpad-container{display:none}}@media (max-width: 767px){.mobile-hint{display:inline}body{padding:.5rem}.game-header{padding:1rem}.game-title{font-size:1.5rem}.score-container{gap:1rem}.score-value{font-size:1.5rem}.game-main{padding:1rem}.overlay-title{font-size:2rem}.overlay-message{font-size:1rem}.btn{min-width:100px;padding:.65rem 1.25rem;font-size:.875rem}.dpad-btn{width:56px;height:56px}}@media (max-width: 480px){.game-container{border-radius:.5rem}.game-title{font-size:1.25rem}.score-label{font-size:.75rem}.score-value{font-size:1.25rem}.button-controls{width:100%}.btn{flex:1;min-width:90px}.difficulty-selector{width:100%;justify-content:center}.dpad-btn{width:52px;height:52px;font-size:1.25rem}}@media (orientation: landscape) and (max-height: 600px){body{padding:.5rem;align-items:flex-start}.game-container{max-width:100%}.game-header{padding:.75rem 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