:root{--bg:#F5F6F8;--surface:#fff;--ink:#172321;--muted:#596560;--accent:#246455;--tint:#E6F0EA;--line:#DDE3DF;--orange:#7A5827}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Noto Sans SC","PingFang SC",sans-serif;font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}a{color:inherit;text-decoration:none}button,a,select,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,summary:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid 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