*{box-sizing:border-box}html,body{margin:0;background:#080b19;color:#f4f6ff;font:16px system-ui,Segoe UI,sans-serif}.game-page{height:100vh;overflow:hidden}.stage{height:100%;display:grid;place-items:center}canvas{display:block;height:min(100vh,177.777vw);width:min(100vw,56.25vh);background:#10172c}.control-page{min-height:100vh;padding:28px}.panel{max-width:650px;margin:auto;background:#141b31;border:1px solid #313c5b;padding:28px;border-radius:22px}h1{font-size:28px;letter-spacing:3px}small{font-size:12px;color:#89a2cb}p{line-height:1.5;color:#c9d2e8}a{color:#8edbff}label{display:block;margin:22px 0}input{display:block;margin-top:7px;width:100%;padding:13px;color:white;background:#0a1020;border:1px solid #526080;border-radius:10px}.grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}button{padding:17px 8px;color:white;border:1px solid #61708f;border-radius:10px;background:#253252;cursor:pointer;font-weight:700}button:hover{filter:brightness(1.3)}button.red{background:#872d47}button.blue{background:#274b92}.hint{font-size:13px}