:root{--bg-base: #000000;--text-main: #00ff41;--text-dim: #008f11;--border-color: #00ff41;--error-color: #ff003c;--success-color: #00ff41}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-base);color:var(--text-main);font-family:Courier New,Courier,monospace;display:flex;justify-content:center;align-items:center;min-height:100vh;overflow:hidden;position:relative}#matrix-canvas{position:absolute;top:0;left:0;width:100%;height:100%;z-index:-1}.container{background-color:#000000d9;border:1px solid var(--border-color);padding:3rem 2.5rem;width:100%;max-width:650px;position:relative;box-shadow:0 0 20px #00ff4133,inset 0 0 20px #00ff411a}.console-text{font-size:1.5rem;margin-bottom:2rem;color:var(--text-main);text-shadow:0 0 5px var(--text-main);animation:blink-caret 1s step-end infinite}@keyframes blink-caret{0%,to{border-right:transparent}50%{border-right:2px solid var(--text-main)}}.meta-info{margin-bottom:1.5rem;border-bottom:1px dashed var(--text-dim);padding-bottom:.5rem}.progress{color:var(--text-main);font-size:1rem}.question{font-size:1.2rem;margin-bottom:2.5rem;color:var(--text-main)}.timer-container{margin-bottom:2.5rem;text-align:center}.timer{font-size:4.5rem;color:var(--text-main);background:#000;border:2px solid var(--border-color);display:inline-block;padding:1rem 3rem;letter-spacing:8px;box-shadow:0 0 10px #00ff4166,inset 0 0 10px #00ff4166;text-shadow:0 0 15px var(--text-main)}.input-group{display:flex;align-items:center;margin-bottom:1.5rem;background:#000;border:1px solid var(--text-dim);transition:all .3s}.input-group:focus-within{border-color:var(--text-main);box-shadow:0 0 15px #00ff414d}.prompt{color:var(--text-main);padding:.8rem .5rem .8rem 1rem;font-weight:700}input[type=text]{flex-grow:1;background:transparent;border:none;color:var(--text-main);padding:.8rem .5rem;font-family:inherit;font-size:1.1rem;outline:none;text-shadow:0 0 5px var(--text-main)}input[type=text]::placeholder{color:var(--text-dim);text-shadow:none;opacity:.7}.square-btn{border:1px solid var(--border-color);padding:.8rem 1.5rem;font-family:inherit;font-weight:700;cursor:pointer;font-size:1rem;transition:all .2s ease-in-out;background:transparent;color:var(--text-main);text-transform:uppercase}.square-btn.primary{background:var(--text-dim);color:#000;border-color:var(--text-dim)}.square-btn.primary:hover{background:var(--text-main);color:#000;box-shadow:0 0 15px var(--text-main)}.square-btn.outline{border:1px dashed var(--text-dim);color:var(--text-dim)}.square-btn.outline:hover{border-color:var(--text-main);color:var(--text-main);background:#00ff411a;box-shadow:0 0 10px #00ff4133}.square-btn.next-action{border:1px solid var(--text-main);box-shadow:0 0 10px #00ff4133;margin-top:1rem}.square-btn.next-action:hover{background:#00ff4126;box-shadow:0 0 15px var(--text-main)}.actions{display:flex;flex-direction:column;align-items:center;gap:1rem;margin-top:2rem;min-height:50px}.hidden{display:none!important}#result-message{font-size:1.1rem;margin-top:1.5rem;padding:1rem;border:1px solid transparent}#result-message.success{color:var(--success-color);border-color:var(--success-color);background:#00ff411a;text-shadow:0 0 5px var(--success-color)}#result-message.error{color:var(--error-color);border-color:var(--error-color);background:#ff003c1a;text-shadow:0 0 5px var(--error-color)}#start-screen{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;justify-content:center;align-items:center;z-index:20;background:#000}#system-start-btn{font-size:1.5rem;padding:1.5rem 3rem;letter-spacing:5px;box-shadow:0 0 20px #00ff414d;background:#000;color:var(--text-main);border:1px solid var(--border-color);cursor:pointer}#mosaic-overlay{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:15;opacity:0;backdrop-filter:blur(8px) contrast(150%);-webkit-backdrop-filter:blur(8px) contrast(150%);background-image:linear-gradient(45deg,rgba(0,255,65,.1) 25%,transparent 25%,transparent 75%,rgba(0,255,65,.1) 75%,rgba(0,255,65,.1)),linear-gradient(45deg,rgba(0,255,65,.1) 25%,transparent 25%,transparent 75%,rgba(0,255,65,.1) 75%,rgba(0,255,65,.1));background-size:30px 30px;background-position:0 0,15px 15px;mask-image:radial-gradient(ellipse at center,transparent 80%,black 100%);-webkit-mask-image:radial-gradient(ellipse at center,transparent 80%,black 100%);transition:opacity 1s linear,mask-image 1s linear,-webkit-mask-image 1s linear}#loading-screen{position:absolute;top:0;left:0;width:100%;height:100%;display:none;flex-direction:column;justify-content:center;align-items:center;z-index:25;background:#000000d9}#loading-screen .container{width:80%;max-width:800px;padding:3rem;display:flex;flex-direction:column;justify-content:center}.loading-text{margin-bottom:15px;font-weight:700;letter-spacing:2px;color:var(--text-main);font-family:monospace;font-size:1.5rem}.loading-bar-wrapper{width:100%;height:30px;border:2px solid var(--border-color);padding:4px;box-sizing:border-box}.loading-gauge{width:0%;height:100%;background:var(--text-main);box-shadow:0 0 15px var(--text-main)}#game-clear-text{display:none;font-size:4rem;font-weight:700;text-align:center;letter-spacing:8px;text-shadow:0 0 20px var(--text-main);color:var(--text-main);font-family:monospace}#staff-instruction-text{display:none;margin:30px auto 0;font-size:1.5rem;color:var(--text-main);font-family:monospace;letter-spacing:2px}#main-container{display:none;position:relative;z-index:10}