:root{--ink:#202a34;--muted:#626e79;--accent:#21685d;--line:#dce2e6;--paper:#fff;--soft:#f5f7f8;--mint:#edf4f1}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:96px}body{margin:0;color:var(--ink);background:var(--paper);font-family:"Segoe UI","Microsoft YaHei",system-ui,sans-serif;font-size:15px;line-height:1.8}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button{cursor:pointer}button,a,input,textarea,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible,[tabindex="0"]:focus-visible{outline:3px solid #287d70;outline-offset:4px}[hidden]{display:none!important}h1,h2,h3,p,figure{margin:0}h1,h2,h3{font-weight:650}.wrap{width:min(1180px,calc(100% - 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