:root{--ink:#102022;--muted:#5d6c6c;--line:#dfe7e4;--paper:#fbfcf9;--white:#fff;--teal:#0f766e;--green:#4d7c0f;--coral:#c2410c;--amber:#b45309;--brand-orange:#f47717;--brand-blue:#157ba8;--mist:#eef6f2;--sage:#dfeadf;--shadow:0 18px 60px #1020221a}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--paper);color:var(--ink);letter-spacing:0;margin:0;font-family:Arial,PingFang SC,Microsoft YaHei,sans-serif}body,button,input,select,textarea{font:inherit}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input,select,textarea{border:0}main{min-height:70vh}.site-header{z-index:40;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#fbfcf9eb;border-bottom:1px solid #dfe7e4d1;grid-template-columns:auto 1fr auto auto;align-items:center;gap:24px;min-height:72px;padding:0 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