:root{--ink:#183340;--muted:#617582;--line:#dce5e9;--paper:#fff;--wash:#f3f6f7;--brand:#146575;--accent:#d1ebe6;--red:#a22f32;font-family:"Microsoft YaHei","Segoe UI",sans-serif;color:var(--ink);background:var(--wash);font-size:15px;line-height:1.7}*{box-sizing:border-box}body{margin:0}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}button,input,select,textarea{font:inherit}button,a.button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #8dbdc7;outline-offset:3px}.skip{position:absolute;left:12px;top:-100px}.skip:focus{top:8px;background:white;padding:12px;z-index:100}header{padding:22px max(24px,calc((100vw - 1280px)/2));background:white;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:32px}.brand{display:flex;align-items:center;gap:12px;white-space:nowrap;color:var(--ink)}.brand-mark{background:var(--brand);padding:9px 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