:root{color-scheme:light;--ink:#152b45;--muted:#64748b;--line:#e5eaf0;--blue:#2264ed;--surface:#fff;--bg:#f5f7fa;--mono:"SFMono-Regular",Consolas,"Liberation Mono",monospace;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-synthesis:none;color:var(--ink);background:var(--bg)}*{box-sizing:border-box}body{margin:0;font-size:16px;line-height:1.6}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}a{color:inherit;text-decoration:none}button{transition:background .18s,transform .18s,color .18s}button:not(:disabled):active{transform:translateY(1px)}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid 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