*,
*::after,
*::before {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
    outline: none;
}

ol,
ul {
    list-style: none;
}

ins,
a {
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
}

img {
    border: none;
    vertical-align: middle;
}

html {
    font-size: 62.5%;
}

body {
    font-size: 1.4rem;
    font-family: PingFang SC, DFPKingGothicGB-Regular, Lato, Tahoma, Microsoft Yahei, sans-serif !important;
    overflow: hidden;
}

html,
body,
.page {
    padding: 0;
    margin: 0;
    height: 100%;
    width: 100%;
}

.page {
    position: relative;
    background-color: #afa27c;
}

.page .a-box {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

.page .ab-bd .bg-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    z-index: 1;
}

.page .overlay-img-wrap {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    width: 70%;
    max-width: 500px;
    height: auto;
    border-radius: 8px;
}

.page .overlay-img {
    width: 100%;
    height: auto;
    animation: zoomIn 3s ease-in-out infinite alternate;
}

@keyframes zoomIn {
    0% {
        transform: scale(1);
    }
    100% {
        transform: scale(1.8);
    }
}

.page .logo-wrap {
    display: flex;
    align-items: center;
    z-index: 3;
    position: absolute;
    top: 1rem;
    left: 1rem;
}

.page .logo {
    height: 5rem;
    width: auto;
    margin-right: 1rem;
}

.page .site-name {
    font-size: 1.8rem;
    color: #fff;
    font-weight: 600;
}

.page .info {
    position: absolute;
    bottom: 2rem;
    left: 0;
    width: 100%;
    padding: 2rem;
    text-align: center;
    z-index: 3;
    max-width: 42.8rem;
    margin: 0 auto;
}

.page .info .i-a {
    color: #fff;
    font-size: 2.4rem;
    font-weight: 600;
}

.page .info .i-b {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    padding: 2rem 0;
}

.page .info .i-b span {
    font-size: 1.4rem;
    color: #fff;
}

.page .info .i-c {
    background-color: rgba(224, 89, 4, 0.8);
    color: #fff;
    text-align: center;
    font-weight: 600;
    font-size: 1.6rem;
    cursor: pointer;
    padding: 1rem;
    display: block;
    width: 100%;
}

.page .info .i-c p {
    font-size: 1.2rem;
    font-weight: 400;
    margin-top: 1rem;
    color: #eee;
}

#modalOverlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 1100;
    justify-content: center;
    align-items: center;
}

#modalContent {
    width: 90vw;
    height: 80vh;
    background-color: #111;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

#modalContent iframe {
    width: 100%;
    height: 100%;
    border: none;
}

#modalCloseBtn {
    position: absolute;
    top: 8px;
    right: 12px;
    color: white;
    font-size: 24px;
    cursor: pointer;
    z-index: 1101;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#openTutorialBtn {
    position: fixed;
    top: 50%;
    right: 10px;
    width: 50px;
    height: 50px;
    background: url('../image/steup.png') no-repeat center/contain;
    cursor: pointer;
    z-index: 999;
    transform: translateY(-50%);
    transition: opacity 0.3s;
}

#openTutorialBtn:hover {
    opacity: 0.8;
}