:root{--paper:#faf8f4;--ink:#344154;--muted:#718093;--line:#dde1e5;--lavender:#e5e2ef;--blue:#e3edf2;--sage:#e9eee4;--accent:#59667f;--white:#fffdfb;--serif:"Songti SC","STSong","Noto Serif CJK SC",serif;--sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.8}button,input,textarea,select{font:inherit}button{cursor:pointer;color:inherit}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #9dacc6;outline-offset:4px}button{border:0;background:none}a{color:inherit}h1,h2,h3,p{margin:0}img{max-width:100%;display:block}main:focus{outline:none}.site-header{max-width:1280px;padding:28px 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