:root{--paper:#F5FBFF;--blue:#194DC7;--ink:#132B46;--coral:#ED725D;--mint:#BCE6D6;--lilac:#E8E1FF;--line:#CDDBE5;--soft:#E7F1F7;--body:Arial,"PingFang SC","Microsoft YaHei",sans-serif;--display:"Gill Sans","Trebuchet MS","PingFang SC",sans-serif;--mono:"SFMono-Regular",Consolas,monospace}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);line-height:1.7}button,input{font:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}a{color:inherit}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid 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