/* ---------- 顶部通栏广告 ---------- */
.topbanner-single { background: #fff; position: relative; }
.topbanner-single-link { display: block; }
.topbanner-single-wrap { position: relative; max-width: 1920px; margin: 0 auto; }
.topbanner-single-wrap img { width: 100%; height: auto; }

.topbanner-multi { position: relative; width: 100%; margin: 0 auto; overflow: hidden; background: #fff; transition: height 1s ease-out; height: 0; }
.topbanner-multi.open { height: 320px; }
.topbanner-multi-panel { position: relative; width: 1500px; margin: 0 auto; height: 320px; border-bottom: 1px solid #ccc; }
.topbanner-multi-link { display: block; height: 320px; width: 100%; }
.topbanner-multi-link img { height: 320px; width: 100%; }
.topbanner-close { position: absolute; right: 0; top: 0; z-index: 10; width: 53px; height: 26px; font-size: 12px; line-height: 26px; color: #fff; background: rgba(71,84,102,.6); }
.topbanner-close:hover { opacity: .9; }
.topbanner-tab {
  position: fixed; left: calc(50% + 760px); top: 61px; z-index: 20;
  display: none; width: 150px; height: 100px; background: #fff;
}
.topbanner-tab img { width: 100%; }
.topbanner-multi.collapsed .topbanner-tab { display: block; }