@charset "UTF-8";*{box-sizing:border-box;line-height:1.2;margin:0;padding:0}a,button,img,input{background:transparent;border:0;outline:none;-webkit-tap-highlight-color:transparent}a{text-decoration:none}img[src=""]{visibility:hidden}body{font:14px/1.8 Microsoft YaHei,微软雅黑;position:relative}.header{background:#1d1d1d;left:0;position:fixed;top:0;width:100%;z-index:2}.header .c{align-items:center;display:flex;height:59px;justify-content:space-between;margin:auto;position:relative;width:1200px}.header .c .logo{background:url(https://ak-gw.akspeedy.com/html/header/logo.png) top no-repeat;display:block;height:34px;width:130px}.header .c .menu{margin-left:116px;margin-right:auto}.header .c .menu a{color:#a9a9a9;margin-right:58px;padding:6px 12px}.header .c .menu a.active,.header .c .menu a:hover{color:#fff;font-weight:500}.header .c .menu a.active{background:url(https://ak-gw.akspeedy.com/html/header/nav-bg.png) 99% 90% no-repeat}.header .c .download-pc-btn{background:url(https://ak-gw.akspeedy.com/html/header/download-pc-btn-bg.png) 0 0 no-repeat;height:35px;width:125px}.header .c .download-pc-btn:hover{background-position-x:-125px}.header .c .download-pc-btn:active{background-position-x:-250px}