:root{--ink:#172b46;--muted:#536479;--blue:#17478f;--paper:#f3f5f8;--line:#d7dfe9;--orange:#ba4c22;--soft:#eaf0f8;--body:18px}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--paper);color:var(--ink);font-size:var(--body);line-height:1.85}body.large{--body:21px}button,input{font:inherit}button,a,input{touch-action:manipulation}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #db7835;outline-offset:4px}a{color:var(--blue);text-underline-offset:4px}button{border:0;background:transparent;color:inherit}.skip{position:absolute;top:-80px;left:20px;background:white;padding:10px;z-index:5}.skip:focus{top:12px}header{max-width:1440px;margin:auto;padding:26px 48px;display:flex;gap:24px;align-items:center;border-bottom:1px solid 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