:root{--paper: #10131c;--panel: #1c2130;--ink: #f2f4f8;--ink2: #aab3c6;--line: rgba(255,255,255,.14);--right: #35d07a;--left: #3a8dff;--wrong: #ff4d4d;--gold: #ffcf4a;--shade: rgba(0,0,0,.35)}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--paper);color:var(--ink);font-family:Hiragino Sans,Noto Sans JP,system-ui,sans-serif}#app{height:100%;display:flex;flex-direction:column}.screen{flex:1 1 auto;display:flex;flex-direction:column;min-height:0}.hide{display:none!important}.btn{font:inherit;font-size:16px;padding:10px 22px;border-radius:10px;border:0;color:#f3ecd8;cursor:pointer;background:url(../img/ui-btn-dark.webp) center / 100% 100% no-repeat;text-shadow:0 1px 2px #000;min-height:40px}.btn:hover{filter:brightness(1.2)}.btn:disabled{filter:grayscale(1) brightness(.7);cursor:default}.navFocus{outline:3px solid var(--gold);outline-offset:2px;box-shadow:0 0 0 4px 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i{position:absolute;top:0;width:1px;height:14px;background:#ffffff8c;transform:translate(-.5px)}.rangeFill{position:absolute;top:11px;height:4px;margin-left:8px;background:#ffcf4a73;border-radius:2px;pointer-events:none;width:0}.rangeFill.on{background:var(--gold)}.rangePair input[type=range]{position:absolute;left:0;top:0;width:100%;margin:0;background:none;pointer-events:none;-webkit-appearance:none;appearance:none;height:24px}.rangePair input[type=range]::-webkit-slider-runnable-track{background:transparent;height:24px}.rangePair input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;pointer-events:auto;width:16px;height:16px;border-radius:50%;background:var(--gold);border:2px solid #fff;margin-top:4px;cursor:pointer}.rangePair input[type=range]::-moz-range-track{background:transparent}.rangePair input[type=range]::-moz-range-thumb{pointer-events:auto;width:14px;height:14px;border-radius:50%;background:var(--gold);border:2px solid #fff;cursor:pointer}.modePanel 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