:root{--blue:#124d8c;--navy:#0d2f57;--amber:#e8a016;--ink:#1c2435;--muted:#647084;--line:#dde5ef;--tint:#f4f7fb;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);font-size:16px;line-height:1.65;background:#fff}body[data-lang=zh] .en,body[data-lang=en] .zh{display:none}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button,a,input,textarea{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}a:focus-visible,button:focus-visible{outline:3px solid #f2ab30;outline-offset:5px}input:focus,textarea:focus{outline:2px solid var(--blue);outline-offset:2px}.container{width:min(1180px,calc(100% - 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