:root{--bg:#F5F7F9;--surface:#fff;--soft:#EDF2F5;--mint:#EAF7F5;--navy:#112E43;--navy2:#1D455B;--teal:#16A6A6;--link:#246DA8;--title:#173548;--body:#354D5A;--muted:#667B85;--line:#DBE4E8;--footer:#0E293A}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:18px}body{margin:0;background:var(--bg);color:var(--body);font:16.5px/1.8 Arial,'PingFang SC','Microsoft YaHei',sans-serif;overflow-wrap:break-word}a{color:var(--link);text-underline-offset:3px}a:hover{text-decoration-thickness:2px}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--teal);outline-offset:3px}button{font:inherit;cursor:pointer}.wrap{width:min(100% - 56px,1200px);margin-inline:auto}.skip-link{position:absolute;top:-70px;left:12px;z-index:80;background:#fff;padding:8px 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