:root{--navy:#081727;--ink:#142638;--blue:#416feb;--cyan:#7ecdf4;--muted:#6c7885;--line:#dfe5eb;--paper:#f3f6f9}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;color:var(--ink);font-family:Arial,'Microsoft YaHei','PingFang SC',sans-serif;line-height:1.7;background:#fff}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}img{max-width:100%;display:block}button,a{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible{outline:3px solid #42bce9;outline-offset:5px}.wrap{width:min(1240px,calc(100% - 100px));margin:auto}.site-header{height:88px;background:rgba(6,17,30,.97);color:#fff;position:fixed;inset:0 0 auto;z-index:50;border-bottom:1px solid #ffffff1a}.header-inner{height:100%;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:16px;margin-right:auto}.brand img{width:170px;height:57px;object-fit:contain}.brand-text{font-size:14px;letter-spacing:1px;border-left:1px solid 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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}