:root{--bg:#f5f7fa;--ink:#172a3e;--muted:#7c8998;--line:#e6ebf0;--blue:#2463eb;--green:#1ca27d;--orange:#ce8b28;--side:#101f30}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}button,input,select,textarea{font:inherit}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer;transition:.15s}button:disabled{opacity:.5;cursor:wait}button:focus-visible,a:focus-visible{outline:3px solid #85b5ff;outline-offset:3px}a{color:inherit;text-decoration:none}h1,h2,p{margin-top:0}h1{font-size:29px;letter-spacing:-.6px;margin-bottom:10px;font-weight:650}h2{font-size:17px;font-weight:650;margin-bottom:0}.muted{color:var(--muted);font-size:13px;line-height:1.7}.eyebrow{font-size:10px;font-weight:700;letter-spacing:2.3px;color:#8999ac;margin-bottom:12px}.sidebar{position:fixed;inset:0 auto 0 0;width:232px;background:var(--side);color:#a2b2c4;padding:34px 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