/* 首页头图加载 */
body[data-type=anzhiyu] #nav,
body[data-type=anzhiyu] #scroll-down,
body[data-type=anzhiyu] #site-info {
    -webkit-animation: scale 2.2s cubic-bezier(.6, .1, .25, 1) .5s 1 backwards;
    animation: scale 2.2s cubic-bezier(.6, .1, .25, 1) .5s 1 backwards
}

@media screen and (max-width: 768px) {
    .pl-container {
        position: relative !important
    }
}

@media screen and (min-width: 768px) {

    #page-header.full_page,
    .pl-container {
        height: 100vh
    }

    #page-header.full_page.expand-to-full,
    .pl-container.expand-to-full {
        height: 50vh !important
    }

    .pl-container {
        will-change: opacity, transform, filter;
        opacity: calc(1 - var(--process) * 1) !important;
        transform: scale(calc(1 + var(--process) * .1));
        filter: blur(calc(var(--process) * 10px));
    }
}

.pl-container {
    width: 100%;
    height: 100%;
    position: fixed;
    z-index: -2;
    overflow: hidden;
    will-change: transform;
    /* 添加性能优化 */
    animation: blur-to-clear 2.5s cubic-bezier(.6, .25, .25, 1) 0s 1 backwards, scale 2.2s cubic-bezier(.6, .1, .25, 1) .5s 1 backwards;
}

.pl-img {
    width: 100%;
    height: 100%;
    position: absolute;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    opacity: .1;
    transition: opacity 1s;
    will-change: transform, opacity
}

.pl-video.pl-visible {
    display: block
}

@keyframes blur-to-clear {
    0% {
        filter: blur(50px);
        opacity: 1;
    }

    100% {
        filter: blur(0);
        opacity: 1;
    }
}

@keyframes scale {
    0% {
        transform: scale(1.5) translateZ(0);
        opacity: 0;
    }

    to {
        transform: scale(1) translateZ(0);
        opacity: 1;
    }
}

.pl-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAQAAAAECAYAAACp8Z5+AAAABmJLR0QA/wD/AP+gvaeTAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAKUlEQVQImU3IMREAIAgAwJfNkQCEsH8cijjpMf6vnXlQaIiJFx+omEBfmqIEZLe2jzcAAAAASUVORK5CYII=);
}

.pl-visible {
    opacity: 1;
}

.pl-blur {
    /* 小图锯齿多，增加高斯模糊 */
    filter: blur(50px);
}