:root{--ink:#173e34;--green:#216a51;--muted:#65776e;--line:#d9e2da;--paper:#fbfcf8;--serif:"Songti SC","Noto Serif SC","SimSun",serif;--sans:"Microsoft YaHei","PingFang SC",system-ui,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);font-size:15px;-webkit-font-smoothing:antialiased}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}button:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:3px solid 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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}