:root,:host{--van-back-top-size:1.06667rem;--van-back-top-right:.8rem;--van-back-top-bottom:1.06667rem;--van-back-top-z-index:100;--van-back-top-icon-size:.533333rem;--van-back-top-text-color:#fff;--van-back-top-background:var(--van-blue)}.van-back-top{width:var(--van-back-top-size);height:var(--van-back-top-size);right:var(--van-back-top-right);bottom:var(--van-back-top-bottom);z-index:var(--van-back-top-z-index);cursor:pointer;color:var(--van-back-top-text-color);border-radius:var(--van-radius-max);transition:var(--van-duration-base) cubic-bezier(.25,.8,.5,1);background-color:var(--van-back-top-background);justify-content:center;align-items:center;display:flex;position:fixed;transform:scale(0);box-shadow:0 .053333rem .213333rem #0000001f}.van-back-top:active{opacity:var(--van-active-opacity)}.van-back-top__placeholder{display:none}.van-back-top--active{transform:scale(1)}.van-back-top__icon{font-size:var(--van-back-top-icon-size);font-weight:var(--van-font-bold)}html{-webkit-text-size-adjust:100%;line-height:1.15}body{margin:0}main{display:block}h1{margin:.67em 0;font-size:2em}hr{box-sizing:content-box;height:0;overflow:visible}pre{font-family:monospace;font-size:1em}a{background-color:#0000}abbr[title]{border-bottom:none;-webkit-text-decoration:underline dotted;text-decoration:underline dotted}b,strong{font-weight:bolder}code,kbd,samp{font-family:monospace;font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}img{border-style:none}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:100%;line-height:1.15}button,input{overflow:visible}button,select{text-transform:none}button,[type=button],[type=reset],[type=submit]{-webkit-appearance:button}button::-moz-focus-inner{border-style:none;padding:0}[type=button]::-moz-focus-inner{border-style:none;padding:0}[type=reset]::-moz-focus-inner{border-style:none;padding:0}[type=submit]::-moz-focus-inner{border-style:none;padding:0}button:-moz-focusring{outline:.025641rem dotted buttontext}[type=button]:-moz-focusring{outline:.025641rem dotted buttontext}[type=reset]:-moz-focusring{outline:.025641rem dotted buttontext}[type=submit]:-moz-focusring{outline:.025641rem dotted buttontext}fieldset{padding:.35em .75em .625em}legend{box-sizing:border-box;color:inherit;white-space:normal;max-width:100%;padding:0;display:table}progress{vertical-align:baseline}textarea{overflow:auto}[type=checkbox],[type=radio]{box-sizing:border-box;padding:0}[type=number]::-webkit-inner-spin-button{height:auto}[type=number]::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-.051282rem}[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,[hidden]{display:none}:root,:host{--van-button-mini-height:.64rem;--van-button-mini-padding:0 var(--van-padding-base);--van-button-mini-font-size:var(--van-font-size-xs);--van-button-small-height:.853333rem;--van-button-small-padding:0 var(--van-padding-xs);--van-button-small-font-size:var(--van-font-size-sm);--van-button-normal-padding:0 .4rem;--van-button-normal-font-size:var(--van-font-size-md);--van-button-large-height:1.33333rem;--van-button-default-height:1.17333rem;--van-button-default-line-height:1.2;--van-button-default-font-size:var(--van-font-size-lg);--van-button-default-color:var(--van-text-color);--van-button-default-background:var(--van-background-2);--van-button-default-border-color:var(--van-gray-4);--van-button-primary-color:var(--van-white);--van-button-primary-background:var(--van-primary-color);--van-button-primary-border-color:var(--van-primary-color);--van-button-success-color:var(--van-white);--van-button-success-background:var(--van-success-color);--van-button-success-border-color:var(--van-success-color);--van-button-danger-color:var(--van-white);--van-button-danger-background:var(--van-danger-color);--van-button-danger-border-color:var(--van-danger-color);--van-button-warning-color:var(--van-white);--van-button-warning-background:var(--van-warning-color);--van-button-warning-border-color:var(--van-warning-color);--van-button-border-width:var(--van-border-width);--van-button-radius:var(--van-radius-md);--van-button-round-radius:var(--van-radius-max);--van-button-plain-background:var(--van-white);--van-button-disabled-opacity:var(--van-disabled-opacity);--van-button-icon-size:1.2em;--van-button-loading-icon-size:.533333rem}.van-theme-dark{--van-button-plain-background:transparent}.van-button{box-sizing:border-box;height:var(--van-button-default-height);font-size:var(--van-button-default-font-size);line-height:var(--van-button-default-line-height);text-align:center;border-radius:var(--van-button-radius);cursor:pointer;transition:opacity var(--van-duration-fast);-webkit-appearance:none;-webkit-font-smoothing:auto;margin:0;padding:0;display:inline-block;position:relative}.van-button:before{background:var(--van-black);border:inherit;border-color:var(--van-black);border-radius:inherit;opacity:0;content:" ";box-sizing:content-box;width:100%;height:100%;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.van-button:active:before{opacity:.1}.van-button--loading:before,.van-button--disabled:before{display:none}.van-button--default{color:var(--van-button-default-color);background:var(--van-button-default-background);border:var(--van-button-border-width) solid var(--van-button-default-border-color)}.van-button--primary{color:var(--van-button-primary-color);background:var(--van-button-primary-background);border:var(--van-button-border-width) solid var(--van-button-primary-border-color)}.van-button--success{color:var(--van-button-success-color);background:var(--van-button-success-background);border:var(--van-button-border-width) solid var(--van-button-success-border-color)}.van-button--danger{color:var(--van-button-danger-color);background:var(--van-button-danger-background);border:var(--van-button-border-width) solid var(--van-button-danger-border-color)}.van-button--warning{color:var(--van-button-warning-color);background:var(--van-button-warning-background);border:var(--van-button-border-width) solid var(--van-button-warning-border-color)}.van-button--plain{background:var(--van-button-plain-background)}.van-button--plain.van-button--primary{color:var(--van-button-primary-background)}.van-button--plain.van-button--success{color:var(--van-button-success-background)}.van-button--plain.van-button--danger{color:var(--van-button-danger-background)}.van-button--plain.van-button--warning{color:var(--van-button-warning-background)}.van-button--large{width:100%;height:var(--van-button-large-height)}.van-button--normal{padding:var(--van-button-normal-padding);font-size:var(--van-button-normal-font-size)}.van-button--small{height:var(--van-button-small-height);padding:var(--van-button-small-padding);font-size:var(--van-button-small-font-size)}.van-button__loading{color:inherit;font-size:inherit}.van-button__loading .van-loading__spinner{color:currentColor;width:var(--van-button-loading-icon-size);height:var(--van-button-loading-icon-size)}.van-button--mini{height:var(--van-button-mini-height);padding:var(--van-button-mini-padding);font-size:var(--van-button-mini-font-size)}.van-button--mini+.van-button--mini{margin-left:var(--van-padding-base)}.van-button--block{width:100%;display:block}.van-button--disabled{cursor:not-allowed;opacity:var(--van-button-disabled-opacity)}.van-button--loading{cursor:default}.van-button--round{border-radius:var(--van-button-round-radius)}.van-button--square{border-radius:0}.van-button__content{justify-content:center;align-items:center;height:100%;display:flex}.van-button__content:before{content:" "}.van-button__icon{font-size:var(--van-button-icon-size);line-height:inherit}.van-button__icon+.van-button__text,.van-button__loading+.van-button__text,.van-button__text+.van-button__icon,.van-button__text+.van-button__loading{margin-left:var(--van-padding-base)}.van-button--hairline{border-width:0}.van-button--hairline:after{border-color:inherit;border-radius:calc(var(--van-button-radius) * 2)}.van-button--hairline.van-button--round:after{border-radius:var(--van-button-round-radius)}.van-button--hairline.van-button--square:after{border-radius:0}