
:root{--ink:#172e32;--muted:#566d70;--teal:#00695f;--mint:#d8f2dc;--line:#dbe4df;--paper:#f6f8f3}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75}a{color:inherit;text-decoration:none}a,button{touch-action:manipulation}a:focus-visible,button:focus-visible{outline:3px solid #db8b3a;outline-offset:5px}img{max-width:100%;height:auto}button{font:inherit}.wrap{width:min(1184px,calc(100% - 64px));margin:auto}.skip{position:absolute;left:24px;top:-100px;background:white;padding:12px;z-index:20}.skip:focus{top:10px}.header{position:sticky;top:0;z-index:10;background:rgba(246,248,243,.96);border-bottom:1px solid 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