:root{color:#1e2c29;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;background:#f6f7f2;font-family:Segoe UI,Microsoft YaHei,PingFang SC,sans-serif}*{box-sizing:border-box}body{min-width:320px;margin:0}button,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}::selection{color:#123d36;background:#b9e4d9}:root{--ink:#1e2c29;--muted:#586b65;--soft:#81908b;--paper:#f6f7f2;--white:#fff;--teal:#087865;--teal-dark:#075d50;--line:#dce5df;--pale:#e8f4ee}.page-shell{max-width:1440px;min-height:100vh;margin:auto;padding:0 64px}.site-header{border-bottom:1px solid 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