html{line-height:1.15;-webkit-text-size-adjust:100%}body{margin:0}main{display:block}h1{font-size:2em;margin:.67em 0}hr{box-sizing:content-box;height:0;overflow:visible}pre{font-family:monospace,monospace;font-size:1em}a{background-color:transparent}abbr[title]{border-bottom:none;text-decoration:underline;text-decoration:underline dotted}b,strong{font-weight:bolder}code,kbd,samp{font-family:monospace,monospace;font-size:1em}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}img{border-style:none}button,input,optgroup,select,textarea{font-family:inherit;font-size:100%;line-height:1.15;margin:0}button,input{overflow:visible}button,select{text-transform:none}button,[type=button],[type=reset],[type=submit]{-webkit-appearance:button}button::-moz-focus-inner,[type=button]::-moz-focus-inner,[type=reset]::-moz-focus-inner,[type=submit]::-moz-focus-inner{border-style:none;padding:0}button:-moz-focusring,[type=button]:-moz-focusring,[type=reset]:-moz-focusring,[type=submit]:-moz-focusring{outline:1px dotted ButtonText}fieldset{padding:.35em .75em .625em}legend{box-sizing:border-box;color:inherit;display:table;max-width:100%;padding:0;white-space:normal}progress{vertical-align:baseline}textarea{overflow:auto}[type=checkbox],[type=radio]{box-sizing:border-box;padding:0}[type=number]::-webkit-inner-spin-button,[type=number]::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}[type=search]::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}details{display:block}summary{display:list-item}template{display:none}[hidden]{display:none}ins.adsbygoogle:not(.first-screen)[data-ad-status=unfilled]{display:none!important}body{font-family:Roboto,Noto Sans SC,PingFang SC,Lantinghei SC,Microsoft Yahei,Hiragino Sans GB,"Microsoft Sans Serif",WenQuanYi Micro Hei,sans-serif}pre code{font-family:Consolas,Courier,Courier New,Noto Sans SC,monospace!important}html,mdui-layout-main{scroll-behavior:smooth}@media screen and (prefers-reduced-motion:reduce){html,mdui-layout-main{scroll-behavior:auto}}:not(:defined){visibility:hidden}:root{--mdui-color-background-light: 255, 255, 255;background-color:rgb(var(--mdui-color-surface-container-low))}@font-face{font-family:GoogleSans;font-style:normal;font-weight:500;font-display:swap;src:url(data:font/woff2;charset=utf-8;base64,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) format("woff2")}@font-face{font-family:Roboto;font-style:italic;font-weight:300;font-display:swap;src:url(https://cdn.w3cbus.com/library/roboto/Roboto-LightItalic.woff2) format("woff2")}@font-face{font-family:Roboto;font-style:italic;font-weight:400;font-display:swap;src:url(https://cdn.w3cbus.com/library/roboto/Roboto-Italic.woff2) format("woff2")}@font-face{font-family:Roboto;font-style:italic;font-weight:500;font-display:swap;src:url(https://cdn.w3cbus.com/library/roboto/Roboto-MediumItalic.woff2) format("woff2")}@font-face{font-family:Roboto;font-style:italic;font-weight:700;font-display:swap;src:url(https://cdn.w3cbus.com/library/roboto/Roboto-BoldItalic.woff2) format("woff2")}@font-face{font-family:Roboto;font-style:normal;font-weight:300;font-display:swap;src:url(https://cdn.w3cbus.com/library/roboto/Roboto-Light.woff2) format("woff2")}@font-face{font-family:Roboto;font-style:normal;font-weight:400;font-display:swap;src:url(https://cdn.w3cbus.com/library/roboto/Roboto-Regular.woff2) format("woff2")}@font-face{font-family:Roboto;font-style:normal;font-weight:500;font-display:swap;src:url(https://cdn.w3cbus.com/library/roboto/Roboto-Medium.woff2) format("woff2")}@font-face{font-family:Roboto;font-style:normal;font-weight:700;font-display:swap;src:url(https://cdn.w3cbus.com/library/roboto/Roboto-Bold.woff2) format("woff2")}