:root{--base:#F6FAFC;--white:#fff;--tint:#EAF6FA;--tint2:#EDF4F8;--cyan:#25C8D1;--sky:#25B6E8;--blue:#1787DB;--navy:#174B78;--title:#183A56;--text:#31485D;--muted:#687D8E;--line:#DCE9F0;--footer:#123653;--width:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:25px}body{margin:0;color:var(--text);background:var(--base);font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}body.menu-open{overflow:hidden}a{color:var(--navy);text-decoration-thickness:1px;text-underline-offset:4px}a:hover{color:#076D9C}button{font:inherit;cursor:pointer}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--sky);outline-offset:3px}h1,h2,h3{color:var(--title);line-height:1.38;margin:0 0 .75em}h1{font-size:clamp(27px,3.2vw,42px);letter-spacing:-.035em}h2{font-size:clamp(21px,2.3vw,27px)}h3{font-size:clamp(17px,1.8vw,21px)}p{margin:.2em 0 1.05em}ul,ol{padding-left:1.4em}li{margin:.3em 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@media(max-height:450px) and (max-width:640px){.bottom-nav{position:static}.site-footer{padding-bottom:22px}.back-top{bottom:12px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}
