html,
body {
    height: 100%;
}

body {
    margin: 0;
    font-family: 'Montserrat', sans-serif;
    -webkit-transform-style: preserve-3d;
    -moz-transform-style: preserve-3d;
    transform-style: preserve-3d;
}

#videoBackground {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: fixed;
    left: 0;
    top: 0;
    z-index: -2;
}

body::after {
    width: 100%;
    height: 100%;
    content: '';
    position: fixed;
    left: 0;
    top: 0;
    z-index: -2;
    background: rgba(0, 0, 0, 0.3);
}

.main-container {
    width: 100%;
    height: 100%;
    min-width: 1024px;
    margin: 0;
    padding: 0;
}

.main-container .nav-bar {
    width: 100%;
    max-width: 1600px;
    position: fixed;
    top: 0;
    left: 50%;
    z-index: 9;
    display: flex;
    padding: 32px 128px;
    box-sizing: border-box;
    justify-content: space-between;
    align-items: center;
    transform: translateX(-50%);
}

.main-container .nav-bar .left {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-container .nav-bar .left .icon {
    width: 118px;
    height: 42px;
    border-radius: 6px;
    overflow: hidden;
    display: block;
    margin-right: 10px;
}

.main-container .nav-bar .left .text img {
    width: 36px;
    display: block;
    margin-bottom: 6px;
}

.main-container .nav-bar .left .text div {
    text-align: left;
    font-size: 10px;
    color: white;
    line-height: normal;
}

.main-container .nav-bar .right {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: right;
}

.main-container .nav-bar .right .item {
    position: relative;
}

.main-container .nav-bar .right .item:last-child {
    margin-left: 50px;
}

.main-container .nav-bar .right .item .icon {
    width: 44px;
    height: 44px;
    object-fit: contain;
    display: block;
    opacity: 0.7;
    cursor: pointer;
    transition: opacity 0.2s;
}

.main-container .nav-bar .right .item .content {
    width: 180px;
    position: absolute;
    left: 50%;
    top: 48px;
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, 3%);
    transition: transform 0.3s, opacity 0.3s, visibility 0.3s;
}

.main-container .nav-bar .right .item:hover .icon {
    opacity: 1;
}

.main-container .nav-bar .right .item:hover .content {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
}

.main-container .block {
    position: relative;
    margin: 0 auto;
    text-align: left;
    width: 1110px;
    top: 50%;
    transform: translateY(-50%);
}

.main-container .block .slogan {
	display: block;
	width: 956px;
    margin-bottom: 44px;
    object-fit: contain;
}

.main-container .block .slogan_mobile {
	display: none;
}

.main-container .block .slogan-line {
	margin:57px 0 27px 0;
	width:97px;
	height:2px;
	background: #1DF3A4;
}

.main-container .block .slogan-subtitle {
    font-size: 32px;
    color: white;
    margin: 0 auto;
    margin-bottom: 60px;
}

.main-container .block .button-block {
    display: flex;
    align-items: left;
    justify-content: left;
}

.main-container .block .button-block>div {
    width: 128px;
    height: 44px;
    margin-right: 20px;
    cursor: pointer;
    position: relative;
}

.main-container .block .button-block>div::after {
    width: 100%;
    height: 100%;
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    border-radius: 10px;
    background: transparent;
}

.main-container .block .button-block>div:not(.simple):hover::after {
    background: radial-gradient(rgba(245, 216, 125, 0.4), rgba(245, 216, 125, 0.1));
    box-shadow: 0 0 40px rgba(245, 216, 125, 0.3);
}

.main-container .block .button-block>div .main {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: solid #F5D87D 1px;
    border-radius: 10px;
    filter: brightness(200%);
    /* transition: filter 0.2s; */
    box-sizing: border-box;
}

.main-container .block .button-block>div:hover .main {
    filter: brightness(100%);
}

.main-container .block .button-block>div .main div {
    font-size: 16px;
    color: #F5D87D;
}

.main-container .block .button-block>div .main img {
    width: 24px;
    height: 24px;
    margin-right: 8px;
    display: block;
}

.main-container .block .button-block>div.simple {
    width: 44px;
    position: relative;
    margin-right: 0;
}

.main-container .block .button-block>div.simple .main img {
    margin-right: 0;
}

.main-container .block .button-block>div.simple .main .qrcode {
    width: 180px;
    height: 180px;
    display: block;
    position: absolute;
    right: 0;
    top: -2px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(calc(180px - 46px));
    /* transition: opacity 0.3s, visibility 0.3s; */
}

.main-container .block .button-block>div.simple:hover .main .qrcode {
    opacity: 1;
    visibility: visible;
}

.main-container .bottom-info {
    width: 100%;
    font-size: 12px;
    margin-bottom: 40px;
    position: absolute;
    bottom: 0;
    text-align: center;
    color: white;
}


/* mobile */

.main-container.mobile {
    min-width: unset;
    overflow: hidden;
}

.main-container.mobile .nav-bar {
    max-width: 100%;
    padding: 1.12rem;
}

.main-container.mobile .nav-bar .left .icon {
    width: 3.9rem;
    height: auto;
    margin-right: .56rem;
}

.main-container.mobile .nav-bar .left .text img {
    width: 2.34rem;
}

.main-container.mobile .nav-bar .left .text div {
    font-size: .66rem;
}

.main-container.mobile .right {
    display: none;
}

.main-container .right-mobile {
    display: none;
}

.main-container.mobile .right-mobile {
    display: block;
    position: relative;
}

.main-container.mobile .right-mobile .icon {
    width: 1.15rem;
    height: auto;
    margin-right: .56rem;
    display: block;
    object-fit: contain;
}

.main-container.mobile .right-mobile .content {
    width: auto;
    white-space: nowrap;
    position: absolute;
    right: 0;
    top: 1.1rem;
    opacity: 0;
    visibility: hidden;
    background: white;
    border-radius: .19rem;
    padding: .61rem .5rem;
    transform: translateY(-20%);
    transition: transform 0.3s, opacity 0.3s, visibility 0.3s;
}

.main-container.mobile .right-mobile.active .content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.main-container.mobile .right-mobile .content .arrow {
    position: absolute;
    right: .42rem;
    top: 0;
    width: .39rem;
    height: .22rem;
    display: block;
    transform: translateY(-96%);
}

.main-container.mobile .right-mobile .content .item {
    display: flex;
    align-items: center;
    margin-bottom: .53rem;
}

.main-container.mobile .right-mobile .content .item:last-child {
    margin-bottom: 0;
}

.main-container.mobile .right-mobile .content .item img {
    width: 1.12rem;
    height: 1.12rem;
    object-fit: contain;
    display: block;
    margin-right: .19rem;
}

.main-container.mobile .right-mobile .content .item div {
    font-size: .39rem;
}

.main-container.mobile .block {
	width:100%;
	text-align: center;
}

.main-container.mobile .block .slogan {
	display:none;
    width: 8.17rem;
    margin-bottom: .54rem;
}

.main-container.mobile .block .slogan_mobile {
	display: block;
	width: 7rem;
	margin: 0 auto;
	margin-bottom: 1.08rem;
}

.main-container.mobile .block .slogan-line {
	position:relative;
	margin:2rem auto 0.5rem auto;
	width: 7rem;
	height:5px;
	background: transparent;
}

.main-container.mobile .block .slogan-line:before {
	position:absolute;
	left:0;
	top:0;
	width:1.4rem;
	height:3px;
	background:#1DF3A4;
	content:' ';
}

.main-container.mobile .block .slogan-subtitle {
	margin:0 auto;
	width:13rem;
	text-align:left;
    font-size: 1rem;
    margin-bottom: 2.2rem;
}

.main-container.mobile .button-block {
    display: none;
}

.main-container .download-mobile {
    display: none;
}

.main-container .bottom-br {
    display: none;
}

.main-container.mobile .bottom-br {
    display: block;
}

.main-container.mobile .download-mobile {
    display: inline-block;
    margin-top:3rem;
    font-size: 1rem;
    color: #0D0A1B;
    border-radius: 1.5rem;
    padding: .5rem 2rem;
    background: #1DF3A4;
    transition: background 0.2s;
}

.main-container.mobile .download-mobile:active {
    background: rgba(255, 255, 255, 0.3);
}

.main-container.mobile .bottom-info {
    position: fixed;
    font-size: .28rem;
    opacity: .6;
    margin-bottom: .42rem;
}
.second-page-wrapper {
    position: fixed;
    left: 0;
    top: 100%;
    width: 100%;
    background: #fff;
    border-radius: 16px 16px 0 0;
    z-index: 1001;
    -webkit-transition: all .2s linear;
    transition: all .2s linear;
    color: #222222;
    -webkit-overflow-scrolling: touch;
}
.second-page-main {
    height: calc(100vh - 300px);
    overflow: auto;
    padding: 26px 14px 65px 14px;
    font-size: 14px;
}
.tf-item-title {
    font-size: 20px;
    font-weight: 500;
}
.content-horizon {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}
.content-vertical {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.btn-install {
    background: #36F6C7;
    width: 100px;
    height: 28px;
    border-radius: 14px;
    line-height: 28px;
    text-align: center;
    color: #333;
    margin-top: 20px;
    text-decoration: none;
}
.tf-item-title {
    font-size: 20px;
    font-weight: 500;
}
li {
    display: list-item;
    text-align: -webkit-match-parent;
}
.tf-exam-page-wrapper {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 100%;
    height: 100vh;
    z-index: 1010;
    background: rgba(0, 0, 0, 0.79);
    padding-top: 30px;
}
.center {
    margin: 0 auto;
    text-align: center;
}
.qrcode-page-main-width {
    width: 320px;
}
.tf-exam-download {
    width: 140px;
    height: 36px;
    line-height: 36px;
    border-radius: 18px;
    background: #36F6C7;
    margin: 0 auto;
    color: #333;
    cursor: pointer;
}