:root {
    --ace-page-loader-red: #a8101b;
    --ace-page-loader-paper: #fff;
}

.ace-page-loader {
    position: fixed;
    z-index: 12000;
    inset: 0;
    display: grid;
    width: 100%;
    height: 100vh;
    min-height: 100vh;
    overflow: hidden;
    place-items: center;
    background: var(--ace-page-loader-paper);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s ease, visibility 0s linear .2s;
    visibility: hidden;
}

@supports (height: 100dvh) {
    .ace-page-loader {
        height: 100dvh;
        min-height: 100dvh;
    }
}

/* Only the opening video locks the viewport; ordinary page transitions keep the scrollbar. */
html.ace-page-loader-booting.index-intro-pending {
    overflow: hidden;
}

html.ace-page-loader-booting .ace-page-loader {
    opacity: 1;
    pointer-events: auto;
    transition-delay: 0s;
    visibility: visible;
}

.ace-page-loader__content {
    position: relative;
    display: grid;
    place-items: center;
    opacity: 0;
    transform: translateY(3px) scale(.985);
    transition: opacity .22s ease .025s, transform .28s cubic-bezier(.2, .75, .3, 1) .025s;
}

html.ace-page-loader-booting .ace-page-loader__content {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.ace-page-loader__brand {
    position: relative;
    display: block;
    width: 226px;
    aspect-ratio: 595 / 174;
    isolation: isolate;
}

.ace-page-loader__brand img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: .84;
}

.ace-page-loader__brand::after {
    display: none;
}

@supports ((-webkit-mask: url("")) or (mask: url(""))) {
    .ace-page-loader__brand::after {
        position: absolute;
        inset: 0;
        display: block;
        background-image: radial-gradient(ellipse at center, rgba(255, 255, 255, .94) 0%, rgba(255, 255, 255, .7) 25%, rgba(255, 255, 255, .24) 50%, transparent 74%);
        background-repeat: no-repeat;
        background-position: -58% 50%;
        background-size: 46% 210%;
        content: "";
        opacity: 0;
        -webkit-mask: url("https://static.shouai.cn/tpl-media/10012/objects/51/518879551e5e874f692351183ed220dff0271a72d185fc11dea9073c4b2afaaa.webp") center / contain no-repeat;
        mask: url("https://static.shouai.cn/tpl-media/10012/objects/51/518879551e5e874f692351183ed220dff0271a72d185fc11dea9073c4b2afaaa.webp") center / contain no-repeat;
        will-change: background-position, opacity;
    }

    html.ace-page-loader-booting .ace-page-loader__brand::after {
        animation: ace-page-loader-brand-sweep 2s ease-in-out infinite;
    }
}

@keyframes ace-page-loader-brand-sweep {
    0%, 7% {
        background-position: -58% 50%;
        opacity: 0;
    }
    17% {
        opacity: .72;
    }
    57% {
        background-position: 158% 50%;
        opacity: .72;
    }
    69%, 100% {
        background-position: 158% 50%;
        opacity: 0;
    }
}

@media (max-width: 720px) {
    .ace-page-loader__brand {
        width: 176px;
    }

}

@media (prefers-reduced-motion: reduce) {
    .ace-page-loader,
    .ace-page-loader__content {
        transition-duration: .01ms;
    }

    html.ace-page-loader-booting .ace-page-loader__brand::after {
        animation: none;
        opacity: 0;
    }
}