:root{--ink: #22272c;--ink-2: #4b535b;--mortar: #848c94;--rule: #c9cfd3;--paper: #f6f7f5;--paper-2: #eceeeb;--tape: #f0bf2c;--tape-ink: #2a2306;--ok: #3f72d6;--bad: #d4473a;--shade: rgba(20, 24, 28, .55);--r-ctl: 6px;--r-sheet: 3px;--font: "IBM Plex Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;--step--1: 12px;--step-0: 14px;--step-1: 16px;--step-2: 20px;--step-3: 28px;--step-4: 40px;color-scheme:light}*{box-sizing:border-box}html,body,#app{margin:0;height:100%;overflow:hidden;background:#1d2125}body{font-family:var(--font);color:var(--ink);font-size:var(--step-0);-webkit-font-smoothing:antialiased;touch-action:none;word-break:keep-all;overflow-wrap:anywhere}button,input,select{font:inherit;color:inherit}button{cursor:pointer}:focus-visible{outline:2px solid var(--ok);outline-offset:2px}.stage{position:fixed;inset:0}.stage canvas{display:block;width:100%;height:100%;outline:none}.sheet{background:var(--paper);border:1px solid 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