:root{--paper:#f4f1e9;--ink:#253c35;--muted:#5b6961;--line:#c3ccbd;--control:#7f8d85;--orange:#b8492d;--board:#dce2d6;--cell:#edf0e7;--radius:12px}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Avenir Next,Noto Sans KR,Apple SD Gothic Neo,sans-serif;font-size:15px}button,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,select:focus-visible,canvas:focus-visible,summary:focus-visible{outline:3px solid var(--orange);outline-offset:5px}::selection{background:#d8e7b8;color:var(--ink)}[hidden]{display:none!important}.masthead{max-width:1320px;margin:auto;padding:32px 48px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid 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