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100px}.hero{padding:44px 0 40px}.formula{padding:18px 16px}.formula .body{font-size:16.5px}}@media (max-width: 520px){body{font-size:15.5px}.formula{flex-direction:column;gap:8px;align-items:stretch}.formula .eqno{text-align:right}}@media print{body{background:#fff;color:#111}body:before,body:after,#sidebar,#toc,#topbar,#toTop,#progress,#backdrop{display:none!important}.layout{display:block}main{padding:0}h1,h2,h3,h4{color:#000;-webkit-text-fill-color:#000}.formula,.card,.note,table{break-inside:avoid;border-color:#ccc;background:#fafafa}section{break-before:auto}}