:root{--ink:#183657;--muted:#586a7c;--blue:#2853a2;--paper:#f4f7fb;--line:#d5dfe9;--orange:#ffbe66;--teal:#146b64;--white:#fff;font-family:"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-size:16px}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button,a,summary,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-underline-offset:4px}button:disabled{cursor:not-allowed;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #c27a21;outline-offset:4px}[hidden]{display:none!important}.site-header{max-width:1180px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:24px 28px;border-bottom:1px solid 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