*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);color:#333;overflow:hidden;touch-action:none;-webkit-user-select:none;user-select:none;min-height:100vh}#root{width:100vw;height:100vh}.screen{display:flex;flex-direction:column;height:100vh;width:100vw}.header{background:#fffffff2;padding:1rem;display:flex;justify-content:space-between;align-items:center;box-shadow:0 2px 8px #0000001a;transition:opacity 4s ease-out}.header.fade-out{opacity:0}.header h1{font-size:1.5rem;color:#667eea}.header-buttons{display:flex;gap:.5rem}.icon-btn{background:#667eea;color:#fff;border:none;padding:.5rem 1rem;font-size:1.2rem;border-radius:8px;cursor:pointer;transition:background .3s}.icon-btn:hover{background:#5568d3}.icon-btn:active{transform:scale(.95)}.training-area{flex:1;position:relative;overflow:hidden}.start-message{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:2rem;position:relative;z-index:10}.start-message h2{color:#fff;text-align:center;padding:0 2rem;font-size:1.8rem;text-shadow:2px 2px 4px rgba(0,0,0,.2)}.primary-btn{background:#fff;color:#667eea;border:none;padding:1rem 3rem;font-size:1.5rem;font-weight:700;border-radius:50px;cursor:pointer;box-shadow:0 4px 12px #0003;transition:all .3s}.primary-btn:hover{transform:translateY(-2px);box-shadow:0 6px 16px #0000004d}.primary-btn:active{transform:translateY(0)}.secondary-btn{background:#ffffffe6;color:#e74c3c;border:none;padding:.75rem 2rem;font-size:1.2rem;font-weight:700;border-radius:25px;cursor:pointer;transition:all .3s}.secondary-btn:hover{background:#fff}.danger-btn{background:#e74c3c;color:#fff;border:none;padding:.75rem 2rem;font-size:1rem;border-radius:8px;cursor:pointer;transition:background .3s;margin-top:2rem}.danger-btn:hover{background:#c0392b}.footer{padding:1rem;text-align:center;background:#667eeae6;position:relative;z-index:20}.circle-container{position:absolute;top:0;left:0;width:100%;height:100%;z-index:1}.target-circle{position:absolute;background:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:700;color:#667eea;box-shadow:0 4px 16px #0000004d;cursor:pointer;transition:transform .1s;animation:appear .3s ease-out}@keyframes appear{0%{transform:scale(0);opacity:0}to{transform:scale(1);opacity:1}}.target-circle:active{transform:scale(.9)}.target-circle.left-hand{background:#fff4e6;color:#f39c12}.target-circle.right-hand{background:#e6f4ff;color:#3498db}.splash-effect{position:absolute;border-radius:50%;pointer-events:none;animation:splash .6s ease-out forwards}@keyframes splash{0%{transform:scale(1);opacity:1}to{transform:scale(2.5);opacity:0}}.splash-particle{position:absolute;width:8px;height:8px;border-radius:50%;pointer-events:none;animation:particle .8s ease-out forwards}@keyframes particle{0%{transform:translate(0) scale(1);opacity:1}to{transform:translate(var(--tx),var(--ty)) scale(0);opacity:0}}.countdown-overlay{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;z-index:100;pointer-events:none}.countdown-number{font-size:8rem;font-weight:700;color:#fff;text-shadow:0 4px 20px rgba(0,0,0,.5);animation:countdown-pulse 1s ease-out}@keyframes countdown-pulse{0%{transform:scale(.5);opacity:0}50%{transform:scale(1.2);opacity:1}to{transform:scale(1);opacity:1}}.content{flex:1;padding:2rem;overflow-y:auto;background:#fffffff2}.option-group{margin-bottom:1.5rem}.option-group label{display:block;margin-bottom:.5rem;font-weight:700;color:#667eea}.option-group select,.option-group input[type=range]{width:100%;padding:.5rem;font-size:1rem;border:2px solid #667eea;border-radius:8px;background:#fff}.option-group input[type=range]{cursor:pointer}.option-group span{display:inline-block;margin-left:1rem;font-weight:700;color:#667eea}section{margin-bottom:2rem}section h2{color:#667eea;margin-bottom:1rem;border-bottom:2px solid #667eea;padding-bottom:.5rem}section ul,section ol{margin-left:1.5rem;line-height:1.8}section li{margin-bottom:.5rem}section p{line-height:1.6;margin-bottom:1rem}.stats-chart{width:100%;height:400px;background:#fff;border:2px solid #667eea;border-radius:8px;margin:1rem 0}.stats-summary{background:#fff;padding:1rem;border:2px solid #667eea;border-radius:8px;margin-top:1rem}.stat-row{display:flex;justify-content:space-between;padding:.5rem 0;border-bottom:1px solid #eee}.stat-row:last-child{border-bottom:none}.stat-label{font-weight:700;color:#667eea}.stat-value{color:#333}@media (max-width: 768px){.header h1{font-size:1.2rem}.start-message h2{font-size:1.4rem}.primary-btn{font-size:1.2rem;padding:.75rem 2rem}.content{padding:1rem}}@media (orientation: landscape){.stats-chart{height:300px}}