:root{--paper:#fff9ef;--ink:#3c3026;--muted:#6d6257;--orange:#9f460c;--line:#ddd3c2;--white:#fffef9;--green:#2d654b;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}*{box-sizing:border-box}html{background:var(--paper);scroll-behavior:smooth}body{color:var(--ink);margin:0;font-family:system-ui,-apple-system,PingFang SC,Microsoft YaHei,sans-serif;font-size:20px;line-height:1.65}button,input,textarea,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:var(--orange);text-underline-offset:5px}button:disabled{cursor:default;opacity:.55}h1,h2,h3,p{margin:0 0 16px}h1,h2,h3{line-height:1.4}h1{font-size:2rem}h2{font-size:1.35rem}h3{font-size:1.1rem}svg{width:28px;height:28px}a:focus-visible,button:focus-visible,textarea:focus-visible,summary:focus-visible{outline-offset:5px;outline:3px solid #1e5c85}main:focus{outline:none}.app{max-width:1240px;margin:auto;padding:0 48px}.header{border-bottom:1px solid 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