:root{font-family:system-ui,'Malgun Gothic',sans-serif;color:#294457;background:#f5f6f8;font-synthesis:none}*{box-sizing:border-box}body{margin:0}main{max-width:620px;margin:auto;padding:24px 20px}button{font:inherit;cursor:pointer;touch-action:manipulation}header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #ccd4dd;padding-bottom:16px;font-size:12px;font-weight:700;letter-spacing:2px}.quiet{border:0;background:none;color:#62768a;font-size:13px;letter-spacing:0;padding:8px}h1{font-size:38px;letter-spacing:-1.5px;margin:24px 0 8px}.instruction{font-size:16px;color:#62768a;margin-bottom:24px}.game{background:white;border:1px solid #ccd4dd;border-radius:8px;padding:20px}.stats{display:grid;grid-template-columns:1.1fr 1fr .8fr;gap:16px;border-bottom:1px solid #dde3ea;padding-bottom:16px}.stats small{display:block;font-size:12px;color:#62768a;margin-bottom:5px}.stats strong{font-size:30px;font-variant-numeric:tabular-nums}.stats span{font-size:12px;margin-left:4px}.status{display:flex;justify-content:space-between;gap:8px;font-size:13px;min-height:50px;align-items:center;color:#62768a}#feedback{text-align:right}.arena{position:relative}#grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;aspect-ratio:1}.tile{background:#edf1f5;color:#294457;border:1px solid #d0dae3;border-radius:5px;min-width:0;font-size:clamp(22px,5vw,32px);font-weight:800;font-variant-numeric:tabular-nums;-webkit-tap-highlight-color:transparent;user-select:none}.tile:active{background:#d9e7ee}.tile.wrong{background:#f8ddd8;border-color:#d9998f}.tile.fresh{animation:arrive 100ms ease-out}@keyframes arrive{from{transform:scale(.94)}to{transform:scale(1)}}button:focus-visible{outline:3px solid #518fb2;outline-offset:2px}#cover{position:absolute;inset:0;background:#fffffffa;display:flex;flex-direction:column;justify-content:center;align-items:center;border:1px solid #dde3ea;border-radius:5px;text-align:center;padding:16px}#cover h2{font-size:28px;line-height:1.4;margin:12px 0}#cover p{font-size:14px;color:#62768a;line-height:1.8}.primary{background:#294457;color:white;border:0;padding:15px 22px;border-radius:4px;font-size:16px;font-weight:800}.secondary{background:#edf1f5;border:1px solid #ccd4dd;color:#294457;padding:14px;border-radius:4px;font-size:14px}#bonus{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:54px;color:#294457;text-shadow:0 2px white,2px 0 white,-2px 0 white,0 -2px white;font-weight:900;pointer-events:none;white-space:nowrap}[hidden]{display:none!important}.under{display:flex;justify-content:space-between;gap:12px;font-size:12px;margin:14px 0;color:#62768a}footer{font-size:12px;color:#62768a;margin-top:26px;line-height:1.8}#result h2{font-size:30px;margin:24px 0 8px}#summary{font-size:14px;color:#62768a}.actions{display:flex;gap:8px;margin-top:18px}.actions button{flex:1}#shareStatus{font-size:13px;overflow-wrap:anywhere}#challenge{padding:14px;background:#e3edf4;font-size:14px}@media(max-width:380px){main{padding:16px 12px}.game{padding:14px}h1{font-size:32px}.stats strong{font-size:26px}.status{font-size:12px}.actions{flex-direction:column}#cover h2{font-size:24px}#cover p{font-size:12px}}