html {
    width: 100%;
}

.body {
    width: 100%;
    background-color: #000;
}

.clearfix:after {
    visibility: hidden;
    display: block;
    font-size: 0;
    content: " ";
    clear: both;
    height: 0;
}

.f-l {
    float: left;
}

.f-r {
    float: right;
}

.video-box {
    position: absolute;
    width: 1920px;
    height: 1716px;
    left: 50%;
    top: -55px;
    margin-left: -960px;
    pointer-events: none;
}

.logo {
    position: absolute;
    left: 50%;
    top: 60px;
    width: 105px;
    height: 83px;
    margin-left: -600px;
    background-image: url(../images/logo.png);
    z-index: 10;
}

.logo a {
    display: block;
    width: 100%;
    height: 100%;
}

.main-title {
    position: absolute;
    left: 50%;
    top: 110px;
    width: 253px;
    height: 465px;
    margin-left: -400px;
    background-image: url(../images/main-title.png);
}

.m-viewport {
    position: relative;
    width: 100%;
    height: 3770px;
    margin: 0 auto;
    background-color: #222229;
    background-image: url(../images/body.jpg);
    background-position: top center;
    font-family: "宋体";
    color: #a3a3a3;
    font-size: 14px;
    overflow: hidden;
    box-sizing: border-box;
}

.m-viewport>.wrapper {
    position: relative;
    width: 1000px;
    margin: 0 auto;
    padding-top: 925px;
    z-index: 10;
}

.h-item {
    transform: translateY(100px);
    opacity: 0;
    transition: all 1s;
    margin-bottom: 165px;
}

.h-item.act {
    transform: none;
    opacity: 1;
}

.m-hero-intro {
    width: 755px;
    height: 266px;
    padding: 28px;
    background-image: url(../images/bg-hero.png);
    background-position: center bottom;
    background-repeat: no-repeat;
}

.hero-avatar {
    width: 250px;
    height: 280px;
    background-image: url(../images/avatar-hero.png);
}

.hero-story {
    width: 470px;
    height: 280px;
    background-image: url(../images/bg-story.png);
}

.hero-story .text {
    width: 400px;
    line-height: 200%;
    padding-top: 100px;
    padding-left: 40px;
}

.skill-intro {
    width: 250px;
    height: 510px;
    background-image: url(../images/side-skill.png);
}

.skill-intro .text {
    width: 14em;
    margin: 0 auto;
    padding-top: 135px;
}

.skill-ani-view {
    margin-bottom: 25px;
    padding-bottom: 25px;
    background-image: url(../images/line-2.png);
    background-position: center bottom;
    background-repeat: no-repeat;
}

.skill-ani-view .ani-view {
    position: relative;
    width: 480px;
    height: 290px;
    background-image: url(../images/bg-gif.png);
}

.ani-view .gif {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 470px;
    height: 280px;
    margin: -140px 0 0 -235px;
}

.skill-name-list {
    margin-left: 42px;
}

.skill-name-list ul {
    margin-top: -22px;
}

.skill-name-list li {
    position: relative;
    margin-top: 22px;
}

.skill-name-list .icon {
    position: relative;
    width: 55px;
    height: 55px;
    background-image: url(../images/bg-skill-normal.png);
}

.i-skill {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 46px;
    height: 46px;
    margin: -23px 0 0 -23px;
}

.i-skill.skill-q {
    background-image: url(../images/icon_skill/1.jpg);
}

.i-skill.skill-w {
    background-image: url(../images/icon_skill/2.jpg);
}

.i-skill.skill-e {
    background-image: url(../images/icon_skill/3.jpg);
}

.i-skill.skill-r {
    background-image: url(../images/icon_skill/4.jpg);
}

.skill-name-list .active .icon {
    background-image: url(../images/bg-skill.png);
}

.skill-name {
    margin-left: 10px;
}

.skill-name .i {
    width: 27px;
    height: 28px;
    margin-bottom: 10px;
}

.q .i {
    background-image: url(../images/icon-q.png);
}

.q .name {
    width: 70px;
    height: 16px;
    background-image: url(../images/skill-1.png);
}

.w .i {
    background-image: url(../images/icon-e.png);
}

.active .q .i {
    background-image: url(../images/icon-q-active.png);
}

.active .q .name {
    width: 70px;
    height: 16px;
    background-image: url(../images/skill-1-a.png);
}

.w .name {
    width: 88px;
    height: 17px;
    background-image: url(../images/skill-3.png);
}

.active .w .i {
    background-image: url(../images/icon-e-active.png);
}

.active .w .name {
    width: 88px;
    height: 17px;
    background-image: url(../images/skill-3-a.png);
}

.e .i {
    background-image: url(../images/icon-r.png);
}

.e .name {
    width: 70px;
    height: 17px;
    background-image: url(../images/skill-4.png);
}

.active .e .i {
    background-image: url(../images/icon-r-active.png);
}

.active .e .name {
    width: 70px;
    height: 17px;
    background-image: url(../images/skill-4-a.png);
}

.r .i {
    background-image: url(../images/icon-w.png);
}

.r .name {
    width: 71px;
    height: 17px;
    background-image: url(../images/skill-2.png);
}

.active .r .i {
    background-image: url(../images/icon-w-active.png?v=1);
}

.active .r .name {
    width: 71px;
    height: 17px;
    background-image: url(../images/skill-2-a.png);
}

.text-item {
    width: 20em;
}

.text-item .t {
    width: 147px;
    height: 17px;
    margin: 0 auto 12px;
}

.text-item .t-intro {
    background-image: url(../images/title-intro.png);
}

.text-item .t-more {
    background-image: url(../images/title-more.png);
}

.m-guide {
    padding-bottom: 20px;
    background-image: url(../images/line.png);
    background-position: center bottom;
    background-repeat: no-repeat;
}

.guide-intro {
    width: 250px;
    height: 686px;
    background-image: url(../images/side-guide.png);
}

.guide-detail {
    margin-left: 50px;
}

.video-view {
    position: relative;
    width: 700px;
    height: 394px;
    margin-bottom: 25px;
    background-image: url(../images/bg-video.png);
}

.video-view .video {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 690px;
    height: 384px;
    margin: -192px 0 0 -345px;
}

.video:hover .cover::before {
    opacity: 0;
}

.video .cover {
    position: relative;
    width: 100%;
    height: 100%;
    background-image: url(../images/cover.jpg);
}

.video .cover::before {
    position: absolute;
    display: block;
    content: '';
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, .6);
    transition: all .4s;
}

.video-view .icon-play {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 103px;
    height: 103px;
    transform: translate(-50%, -50%);
    background-image: url(../images/icon-play.png);
    cursor: pointer;
    transition: all .4s;
}

.guide-text-view .text-item {
    width: 24em;
}

.text-item .t-eq {
    background-image: url(../images/title-eq.png);
}

.text-item .t-combo {
    background-image: url(../images/title-combo.png);
}

.guide-text-view ul {
    margin-top: 10px;
    margin-left: -15px;
}

.guide-text-view li {
    position: relative;
    float: left;
    display: inline-block;
    width: 67px;
    height: 66px;
    margin-left: 15px;
    margin-bottom: 10px;
    background-image: url(../images/bg-item.png);
}

.guide-text-view .i-item {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 46px;
    height: 46px;
    transform: translate(-50%, -50%);
}

.i-item.item-1 {
    background-image: url(../images/icon_eq/1.jpg);
}

.i-item.item-2 {
    background-image: url(../images/icon_eq/2.jpg);
}

.i-item.item-3 {
    background-image: url(../images/icon_eq/3.jpg);
}

.i-item.item-4 {
    background-image: url(../images/icon_eq/4.jpg);
}

.i-item.item-5 {
    background-image: url(../images/icon_eq/5.jpg);
}

.i-item.item-6 {
    background-image: url(../images/icon_eq/6.jpg);
}

.m-wallpaper {
    width: 1000px;
    height: 378px;
    background-image: url(../images/bg-wallpaper.png);
}

.m-dl {
    width: 211px;
    padding-top: 120px;
    margin-right: 60px;
}

.m-pc {
    margin-bottom: 20px;
}

.m-dl .t {
    width: 100%;
    height: 26px;
}

.m-dl .t.t-pc {
    background-image: url(../images/title-pc.png);
}

.m-dl .t.t-app {
    background-image: url(../images/title-app.png);
}

.m-dl li {
    display: inline-block;
    width: 48%;
    margin-bottom: 15px;
}

.m-dl li a {
    color: #d8e0e6;
    text-decoration: underline;
}

/* NAV */
.u-nav {
    position: fixed;
    top: 1160px;
    right: 70px;
    z-index: 10;
}

.u-nav ul {
    padding-top: 63px;
    width: 34px;
    background-image: url(../images/bg-nav.png);
    background-position: center top;
    background-repeat: no-repeat;
}

.u-nav li {
    width: 34px;
    height: 34px;
    margin: 0 auto 24px;
    position: relative;
}

.u-nav .u-btn {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 20px;
    height: 20px;
    transform: translate(-50%, -50%);
    background-image: url(../images/nav.png);
    cursor: pointer;
}

.u-nav .active .u-btn {
    width: 34px;
    height: 34px;
    background-image: url(../images/nav-active.png);
}

.u-nav span {
    display: block;
    position: absolute;
    left: -100px;
    top: 50%;
    transform: translateY(-50%);
    background-image: url(../images/sprite-nav.png);
}

.active .i-3 {
    background-position: -0px -0px;
    height: 25px;
    width: 89px;
}

.active .i-4 {
    background-position: -0px -25px;
    height: 25px;
    width: 89px;
}

.active .i-1 {
    background-position: -0px -50px;
    height: 25px;
    width: 91px;
}

.active .i-2 {
    background-position: -0px -75px;
    height: 25px;
    width: 91px;
}

.i-2 {
    background-position: -0px -100px;
    height: 18px;
    width: 71px;
}

.i-t {
    background-position: -0px -118px;
    height: 17px;
    width: 63px;
}

.i-4 {
    background-position: -0px -135px;
    height: 17px;
    width: 69px;
}

.i-3 {
    background-position: -0px -152px;
    height: 17px;
    width: 70px;
}

.i-1 {
    background-position: -0px -169px;
    height: 17px;
    width: 71px;
}

.active .i-5 {
    background-position: -0px -186px;
    height: 24px;
    width: 91px;
}

.i-5 {
    background-position: -0px -210px;
    height: 17px;
    width: 71px;
}

/* vid */
.u-vid-player {
    display: none;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 100;
}

.u-vid-player .u-mask {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #000;
    opacity: .6;
    z-index: 20;
}

.u-vid-player .container {
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 200;
}

.u-btn.close {
    position: absolute;
    right: -50px;
    top: 0;
    width: 50px;
    height: 50px;
    text-align: center;
    font-size: 50px;
    line-height: 50px;
    background-color: #000000;
    color: #ffffff;
    cursor: pointer;
    z-index: 20;
    float: left;
}