:root{--paper:#faf6ec;--white:#fffdf8;--ink:#302b24;--muted:#6a6257;--red:#913a2c;--line:#d8cdbb;--gold:#b5914d;--serif:"Noto Serif SC","SimSun",serif}
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@page{size:A4;margin:15mm}
@media screen and (min-width:900px){#lesson-stage:fullscreen .slide{font-size:26px}#lesson-stage:fullscreen .slide>h2{font-size:42px}#lesson-stage:fullscreen .prompt h2{font-size:28px}}
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