:root{--bg-gradient-top: #E8F4FD;--bg-gradient-bottom: #B8D4E3;--text-primary: #2D3748;--text-secondary: #718096;--surface: rgba(255, 255, 255, .15);--border: rgba(255, 255, 255, .3);--shadow: rgba(0, 0, 0, .15);--color-primary: #4ECDC4;--color-primary-dark: #38B2AC;--color-danger: #FF6B6B;--color-success: #A8E6CF;--color-star: #FFE66D;--header-height: 56px;--footer-height: 72px;--safe-area-top: env(safe-area-inset-top, 0px);--safe-area-bottom: env(safe-area-inset-bottom, 0px);--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--font-size-sm: 12px;--font-size-base: 16px;--font-size-lg: 20px;--font-size-xl: 28px;--font-size-xxl: 40px}[data-theme=dark]{--bg-gradient-top: #1a1a2e;--bg-gradient-bottom: #16213e;--text-primary: #F7FAFC;--text-secondary: #A0AEC0;--surface: rgba(255, 255, 255, .05);--border: rgba(255, 255, 255, .1);--shadow: rgba(0, 0, 0, .4)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;width:100%;overflow:hidden}body{font-family:var(--font-family);font-size:var(--font-size-base);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;touch-action:manipulation;user-select:none;-webkit-user-select:none}button{border:none;background:none;cursor:pointer;font-family:var(--font-family);touch-action:manipulation}a{text-decoration:none;color:inherit}app-root{display:block;height:100%}app-menu,app-game,app-level-select,app-settings{display:block;width:100%;height:100%;animation:screenEnter .22s ease-out both}@keyframes screenEnter{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}