*{box-sizing:border-box}body{margin:0;background:#101827;color:#f3f6ff;font-family:system-ui,sans-serif;min-height:100svh}main{max-width:460px;margin:auto;padding:24px 18px 32px}header{display:flex;justify-content:space-between;align-items:center;gap:8px}header span{font-size:10px;letter-spacing:1px;color:#9dabc4}a{color:#a6d5ff;text-decoration:none;font-size:13px}h1{font-size:36px;margin:30px 0 24px;letter-spacing:-2px}h1 span{display:block;font-size:14px;font-weight:400;letter-spacing:0;color:#a9b6cc;margin-top:8px}.stats{display:flex;background:#1c2940;border-radius:16px;padding:16px;justify-content:space-around;text-align:center;font-size:12px;color:#a9b6cc}strong{display:block;color:white;font-size:26px;margin-top:4px}#next{color:#8ef0c4}#message{min-height:42px;font-size:14px;line-height:1.5;color:#b8d6f6;margin:20px 0 12px}#board{display:grid;grid-template-columns:repeat(5,1fr);gap:7px;padding:9px;border-radius:20px;background:#1c2940}button{font:inherit;cursor:pointer;touch-action:manipulation}#board button{aspect-ratio:1;border:0;border-radius:12px;background:#2b3b55;color:white;font-size:clamp(20px,6vw,29px);font-weight:750;transition:background .12s,transform .12s}#board button:active{transform:scale(.92)}#board button[data-level="1"]{background:#a7e8d0;color:#173b36}#board button[data-level="2"]{background:#a8d5ff;color:#183857}#board button[data-level="3"]{background:#c7b9ff;color:#342458}#board button[data-level="4"]{background:#ffc798;color:#593413}#board button[data-level="5"]{background:#ff9cbd;color:#581f38}#board button[data-high="true"]{background:#ffe28b;color:#514016}.hint{outline:2px dashed #8ef0c4;outline-offset:-5px}.restart{width:100%;margin-top:18px;padding:14px;background:#8ef0c4;border:0;border-radius:12px;color:#163a30;font-weight:700}.help,details{font-size:13px;line-height:1.7;color:#a9b6cc}.help{margin:20px 2px}details{border-top:1px solid #2b3b55;padding-top:12px}details button{border:1px solid #6d839f;background:transparent;color:white;border-radius:8px;padding:8px}button:focus-visible,a:focus-visible{outline:3px solid white;outline-offset:2px}@media(max-height:730px){main{padding-top:14px}h1{margin:18px 0;font-size:30px}.stats{padding:10px}#message{margin-top:12px}}