* {
    margin: 0;
    padding: 0;
    list-style-type: none;
}

a {
    all: unset;
    cursor: pointer;
    font-size: 14px;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    background: hsla(0, 0%, 100%, .8);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border-bottom: 1px solid rgba(0, 0, 0, .08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    height: 50px;
    padding-left: 20px;
    padding-right: 20px;
    z-index: 1;
}

header>div {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
}

header .left .logo a {
    display: block;
    width: 90px;
    height: 35px;
    background: url("../img/logo-black.png") no-repeat;
    background-size: cover;
}

header .right {
    justify-content: right;
    padding-right: 50px;
}

header .left .nav,
header .right .nav {
    display: flex;
    align-items: center;
    justify-content: left;
    margin-left: 10px;
}

header .left .nav div,
header .right .nav div {
    margin-left: 20px;
    padding: 5px 20px;
}

header .left .nav div:hover,
header .left .nav div.active,
header .right .nav div:hover {
    border-radius: 20px;
    background-color: aliceblue;
    color: #00bfff;
}

div#app {
    width: 100%;
    background: url("../img/zleimusic-bg.png") center center no-repeat;
    background-size: cover;
    overflow-y: scroll;
    background-attachment: fixed;
}

body {
    background: url("../img/zleimusic-bg.png") center center no-repeat;
    background-size: cover;
    background-attachment: fixed;
}

div#app::-webkit-scrollbar {
    display: none;
}

div.content {
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: start;
    align-items: center;
    flex-direction: column;
    position: relative;
}

div.first,
div.last {
    justify-content: center;
}

div.content-1 h1 {
    font-size: clamp(1.25rem, 0.814rem + 3.49vw, 5rem);
    margin-top: -100px;
}

div.content-1 div.info {
    margin-top: 30px;
    position: relative;
    top: 50%;
}

div.content-1 div.download-box {
    position: absolute;
    bottom: 100px;
    display: flex;
}

span.highlight {
    color: #00bfff;
}

h2 {
    font-size: clamp(0.813rem, 0.616rem + 1.57vw, 2.5rem);
}

p {
    color: grey;
    font-size: clamp(0.125rem, -0.006rem + 1.05vw, 1.25rem);
}

button.download {
    width: auto;
    height: 50px;
    color: white;
    background-color: #00bfff;
    border-radius: 10px;
    font-size: 15px;
    outline: none;
    border: none;
    cursor: pointer;
    margin-top: 50px;
    display: flex;
    align-items: center;
    padding: 0px 10px;
    margin: 0 20px;
    transition: all 0.3s;
    opacity: 0;
}

button.download:active {
    scale: 0.5;
}

button svg {
    width: 20px;
    height: 20px;
    margin-right: 10px;
}

button.noselect{
    user-select: none;
    cursor: not-allowed;
}

.title {
    letter-spacing: 100px;
    text-wrap-mode: nowrap;
    /* scale: 0.0; */
}

h2 {
    margin-bottom: 15px;
    margin-top: 70px;
}

.content-1 h2 {
    margin-top: 0px;
}

.content-2 img {
    width: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.content-3 div.img-box {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 82%;
    transform: translate(-50%, -50%);
    background: url('../img/785343f4f709bda80671f103ea47d573.png') no-repeat center center;
    background-size: cover;
    height: -webkit-fill-available;
}

.content-3 div.img-box img {
    width: 100%;
    height: 0;
    object-fit: cover;
    height: 0px;
    position: relative;
    top: 50%;
    transform: translateY(-50%);
}

span.loader {
    width: 64px;
    height: 64px;
    position: relative;
    background-image:
        linear-gradient(#000 16px, transparent 0),
        linear-gradient(#00bfff 16px, transparent 0),
        linear-gradient(#00bfff 16px, transparent 0),
        linear-gradient(#000 16px, transparent 0);
    background-repeat: no-repeat;
    background-size: 16px 16px;
    background-position: left top, left bottom, right top, right bottom;
    animation: rotate 1s linear infinite;
}
div.loading-box{
    width: 100%;
    height: 100vh;
    z-index: 1000000;
    position: absolute;
    top: 0;
    left: 0;
    background-color: white;
}
div.loading-box div{
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100vh;
}
@keyframes rotate {
    0% {
        width: 64px;
        height: 64px;
        transform: rotate(0deg)
    }

    50% {
        width: 30px;
        height: 30px;
        transform: rotate(180deg)
    }

    100% {
        width: 64px;
        height: 64px;
        transform: rotate(360deg)
    }
}


.content-4 div.imgs-box {
    width: 50%;
    height: auto;
    display: flex;
    justify-content: center;
    position: relative;
    top: 37%;
    transform: translateY(-50%);
}

.content-4 div.imgs-box .left-box,
.content-4 div.imgs-box .right-box {
    width: 45%;
}

.content-4 div.imgs-box .right-box {
    text-align: right;
}

.content-4 div.imgs-box .left-box img,
.content-4 div.imgs-box .right-box img {
    width: 50%;
    margin-bottom: 0;
}

.content-4 .img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50%;
}

.content-5 div.imgs-box {
    width: 50%;
    height: auto;
    display: flex;
    justify-content: center;
    position: relative;
    top: 37%;
    transform: translateY(-50%);
}

.content-5 div.imgs-box .left-box,
.content-5 div.imgs-box .right-box {
    width: 45%;
}

.content-5 div.imgs-box .right-box {
    text-align: right;
}

.content-5 div.imgs-box .left-box img,
.content-5 div.imgs-box .right-box img {
    width: 50%;
    margin-bottom: 0px;
}

.content-5 .img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50%;
}

.content-7 img,
.content-8 img {
    width: 50%;
    transform: perspective(800px) rotateX(45deg);
    transform-origin: 50% 100%;
}

div.godown-box {
    position: absolute;
    bottom: 20px;
    animation: godown 2s infinite;
}

div.godown-box svg {
    width: 20px;
    height: 20px;
}

div.mobile-nav {
    display: none;
}

div.mobile-nav svg {
    width: 20px;
    height: 20px;
}

div.mobile-nav-box {
    position: fixed;
    top: 50px;
    left: 0px;
    width: 100%;
    background: white;
    display: none;
    height: 0;
    overflow: hidden;
    animation: show 0.5s forwards linear;
}

div.mobile-nav-box li {
    padding: 10px 10px;
    border-bottom: 1px solid #cccccc6a;
    font-size: 13px;
}

div.mobile-nav-box li.active,
div.mobile-nav-box li:hover {
    background-color: #00bfff;
    color: white;
}

@keyframes godown {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(20px);
    }

    100% {
        transform: translateY(0px);
    }
}

@keyframes show {
    0% {
        height: 0;
    }

    100% {
        height: calc(100% - 50px);
    }
}

/* 当屏幕宽度小于400时 */

@media (max-width: 715px) {
    div.nav {
        display: none !important;
    }

    div.mobile-nav {
        display: block;
    }
}

@media (max-width:400px) {
    .download-box {
        display: grid !important;
        grid-row-gap: 10px;
    }
}