:root{font-family:PingFang SC,Microsoft YaHei,Noto Sans SC,Arial,sans-serif;color:#171411;background:#fff;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}html{scroll-behavior:auto;overflow-x:hidden}body{margin:0;min-width:320px;min-height:100vh;background:#fff;overflow-x:hidden}button,a,input,select,textarea{font:inherit}a{color:inherit;text-decoration:none}button{border:0;cursor:pointer}img{display:block;max-width:100%}.site-shell{min-height:100vh;background:#fff}.site-shell.is-rtl{direction:rtl}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:58px;padding:8px clamp(24px,4vw,52px);border-bottom:1px solid 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