:root{--paper:#f6f5ef;--ink:#253c33;--muted:#728077;--line:#d9ddd2;--accent:#305a43;--lime:#e6edbd;--white:#fffefa;--coral:#ef7354}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Avenir Next","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit}button,input{font:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}button,summary{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #9bae50;outline-offset:5px}button{color:inherit}button:disabled{cursor:wait;opacity:.55}.shell{max-width:1184px;margin:auto;padding:0 48px}.header{height:104px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid 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